/* =========================================================
   GATE CSE PYQ ONLINE TEST PORTAL DESIGN SYSTEM
   Modern Dark/Light Web Portal + Preserved TCS iON Test Engine
   ========================================================= */

:root {
  /* Modern Web Application Theme (Default Dark Slate/Midnight) */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.85);
  --bg-card-hover: rgba(51, 65, 85, 0.95);
  --border-color: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(99, 102, 241, 0.4);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-indigo: #6366f1;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --shadow-glow: 0 10px 30px -10px rgba(99, 102, 241, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);

  /* Official TCS iON Exam Simulator Colors (Subject Test & Full Mock Test Only) */
  --tcs-bg-header: #12355b;
  --tcs-bg-tab-active: #0b5cab;
  --tcs-bg-tab-inactive: #eef2f6;
  --tcs-bg-subbar: #fafafa;
  --tcs-border: #d0d7de;
  --tcs-text-main: #222222;
  --tcs-sidebar-bg: #f4f8fb;
  --tcs-blue-btn: #0073b7;
  --tcs-submit-btn: #4ba6c6;

  --st-ans-bg: #4caf50;
  --st-not-ans-bg: #d9534f;
  --st-not-visited-bg: #e0e0e0;
  --st-marked-bg: #8e44ad;
  --st-ans-marked-bg: #8e44ad;
}

[data-theme="light"] {
  /* Professional light theme: navy header, cool grey page, white cards */
  --bg-primary: #eef1f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f5f8fc;
  --border-color: #d9e0ea;
  --border-accent: rgba(11, 92, 171, 0.30);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #7b8aa0;

  --accent-indigo: #0b5cab;
  --accent-cyan: #0369a1;
  --accent-emerald: #15803d;
  --accent-purple: #6d28d9;
  --accent-amber: #b45309;
  --accent-rose: #be123c;

  --shadow-glow: 0 6px 20px -8px rgba(18, 53, 91, 0.25);
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.05), 0 6px 18px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* =========================================================
   MODERN APPLICATION NAVBAR & DASHBOARD
   ========================================================= */

.app-navbar {
  height: 64px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.app-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  cursor: pointer;
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.brand-badge {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  border: 1px solid var(--border-accent);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-calc-trigger {
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
  transition: all 0.2s ease;
}

.btn-calc-trigger:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(249, 115, 22, 0.4);
}

.btn-theme-toggle {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-theme-toggle:hover {
  background: var(--bg-card-hover);
}

/* Dashboard Container */
.dashboard-container {
  max-width: 1320px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* =========================================================
   MASTER DASHBOARD HERO & COMMAND CENTER (MASTER-TIER UI)
   ========================================================= */

.master-hero-section {
  background: radial-gradient(circle at 12% 20%, rgba(99, 102, 241, 0.22) 0%, transparent 45%),
              radial-gradient(circle at 88% 65%, rgba(6, 182, 212, 0.18) 0%, transparent 50%),
              radial-gradient(circle at 50% 100%, rgba(168, 85, 247, 0.12) 0%, transparent 60%),
              linear-gradient(135deg, rgba(20, 26, 43, 0.95), rgba(13, 17, 28, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 2.5rem 2.75rem;
  margin-bottom: 2rem;
  box-shadow: 0 20px 50px -15px rgba(0, 0, 0, 0.6), 0 0 30px rgba(99, 102, 241, 0.15);
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

.master-hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.8), rgba(6, 182, 212, 0.8), transparent);
}

.hero-top-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-sparkle {
  color: var(--accent-amber);
  animation: pulse 1.5s infinite;
}

.hero-year-pill {
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
  color: #ffffff;
  padding: 0.15rem 0.55rem;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 800;
}

.master-hero-title {
  font-size: 2.4rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero-gradient-text {
  background: linear-gradient(135deg, #a5b4fc 0%, #38bdf8 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.master-hero-desc {
  font-size: 1rem;
  color: #94a3b8;
  line-height: 1.65;
  margin-bottom: 1.75rem;
  max-width: 640px;
}

.master-hero-desc strong {
  color: #e2e8f0;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.hero-btn-primary {
  background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  color: #ffffff;
  border: none;
  padding: 0.85rem 1.6rem;
  border-radius: 12px;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(79, 70, 229, 0.6);
  filter: brightness(1.08);
}

.hero-btn-primary .btn-arrow {
  transition: transform 0.2s ease;
}

.hero-btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

.hero-btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 0.85rem 1.4rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  backdrop-filter: blur(8px);
}

.hero-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Integrated Momentum Card */
.hero-momentum-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.momentum-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.momentum-user-info {
  flex: 1;
}

.momentum-user-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.momentum-sub {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.momentum-target-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.15rem;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.35rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
}

.master-stats-grid .stat-card {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(135deg, rgba(26, 34, 54, 0.6), rgba(15, 23, 42, 0.7));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.master-stats-grid .stat-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 16px rgba(99, 102, 241, 0.2);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.stat-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-lbl {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.section-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 1.25rem;
}

.section-subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin: 0;
}

/* Master Mode Cards Grid */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.master-modes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.75rem;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.master-mode-card {
  background: linear-gradient(180deg, rgba(26, 34, 54, 0.75) 0%, rgba(15, 23, 42, 0.85) 100%);
  border: 1.5px solid rgba(255, 255, 255, 0.09);
  border-radius: 20px;
  padding: 1.75rem;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
}

.master-mode-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent-indigo));
  opacity: 0.7;
  transition: opacity 0.3s ease, height 0.3s ease;
}

.master-mode-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-accent, var(--accent-indigo));
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.6), 0 0 30px color-mix(in srgb, var(--card-accent, var(--accent-indigo)) 25%, transparent);
}

.master-mode-card:hover::before {
  opacity: 1;
  height: 4px;
}

.mode-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.mode-tag-free {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mode-badge-pill {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.mode-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-indigo);
}

.mode-name {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.mode-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.mode-feature-chips {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.mode-feature-chips span {
  font-size: 0.74rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.mode-action {
  font-weight: 800;
  color: var(--accent-indigo);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.mode-card:hover .mode-action {
  gap: 0.65rem;
}

/* Fast-Track Subject Explorer Launchpad */
.subject-explorer-section {
  margin-bottom: 3rem;
}

.subject-fast-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1rem;
}

.subject-fast-card {
  background: linear-gradient(135deg, rgba(26, 34, 54, 0.5), rgba(15, 23, 42, 0.7));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 1.15rem 1.25rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.subject-fast-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-cyan);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(15, 23, 42, 0.85));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3), 0 0 16px rgba(6, 182, 212, 0.2);
}

.subject-fast-icon {
  font-size: 1.5rem;
  margin-bottom: 0.2rem;
}

.subject-fast-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
}

.subject-fast-meta {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

@media (max-width: 992px) {
  .master-hero-section {
    grid-template-columns: 1fr;
    padding: 2rem;
  }
}

/* Modal Windows */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 15, 25, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 90%;
  max-width: 580px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  color: var(--text-main);
}

.modal-header {
  background: rgba(30, 41, 59, 0.9);
  color: var(--text-main);
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.modal-body {
  padding: 1.75rem;
}

.select-group {
  margin-bottom: 1.25rem;
}

.select-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
}

.custom-select, .custom-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.custom-select:focus, .custom-input:focus {
  border-color: var(--accent-indigo);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-indigo), #4f46e5);
  color: #fff;
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  transition: all 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
}

/* =========================================================
   MODERN INTERACTIVE PRACTICE & QUIZ ENGINE VIEW
   Single Question View + Scientific Calculator + Option Keypad
   ========================================================= */

/* =========================================================
   RESUME PRACTICE SESSION BANNER
   ========================================================= */

.resume-session-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(99, 102, 241, 0.12));
  border: 1px solid rgba(6, 182, 212, 0.4);
  border-radius: 14px;
  padding: 1rem 1.4rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.15);
  animation: fadeIn 0.3s ease;
}

.resume-banner-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.resume-banner-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.2);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.resume-banner-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  flex-wrap: wrap;
}

.resume-topic-pill {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.4);
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
}

.resume-banner-subtitle {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: 3px;
}

.resume-banner-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.resume-btn-action {
  padding: 0.55rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
}

.resume-btn-dismiss {
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-color: var(--border-color);
}

.modal-resume-callout {
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.35);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* =========================================================
   MODERN INTERACTIVE PRACTICE & QUIZ ENGINE VIEW
   Clean Focused Layout: Sleek Top Header + Single Q + Topic HUD
   ========================================================= */

.practice-workspace {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Sleek Practice Header */
.practice-sleek-header {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 0.9rem 1.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.practice-header-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.btn-back-dashboard {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-back-dashboard:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  color: var(--text-main);
}

.practice-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.breadcrumb-mode {
  color: var(--accent-emerald);
  font-weight: 800;
}

.breadcrumb-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb-subj {
  color: var(--accent-cyan);
}

.breadcrumb-topic {
  color: var(--text-main);
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.practice-progress-pill {
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.28);
  color: var(--accent-indigo);
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 800;
}

.practice-header-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.practice-stopwatch-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.35);
  padding: 0.45rem 1rem;
  border-radius: 24px;
  font-family: monospace, monospace;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-indigo);
  letter-spacing: 0.05em;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

.stopwatch-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 1.5s infinite;
}

.practice-header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-header-calc {
  background: #0f172a;
  color: #38bdf8;
  border: 1.5px solid #0284c7;
  padding: 0.5rem 1.05rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 0 14px rgba(2, 132, 199, 0.28);
  transition: all 0.2s ease;
}

.btn-header-calc:hover {
  background: #0284c7;
  color: #ffffff;
  border-color: #38bdf8;
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(2, 132, 199, 0.45);
}

.btn-header-calc svg {
  stroke: currentColor;
  stroke-width: 2.2;
}

.btn-header-fullscreen {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 0.95rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all 0.2s ease;
}

.btn-header-fullscreen:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

.header-kbd {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.68rem;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-family: inherit;
  font-weight: 600;
}

.btn-header-scratch {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 0.95rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all 0.2s ease;
}

.btn-header-scratch:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

.btn-header-finish {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: var(--t-rose, #f87171);
  padding: 0.5rem 1.1rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all 0.2s ease;
}

.btn-header-finish:hover {
  background: #ef4444;
  color: #fff;
  border-color: #ef4444;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

/* Unified Exam Main Body Layout */
.modern-quiz-layout {
  display: flex;
  gap: 0;
  align-items: stretch;
  flex: 1;
  overflow: hidden;
}

.modern-q-card {
  flex: 1;
  background: var(--bg-card);
  border: none;
  border-right: 1px solid var(--border-color);
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.q-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.q-title-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.q-badge-group {
  display: flex;
  gap: 0.4rem;
}

.q-badge {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  border: 1px solid var(--border-accent);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
}

.q-body-content {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.q-body-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin: 1rem 0;
  background: #fff;
  padding: 0.5rem;
}

/* Option Cards for Modern Quiz */
.modern-options-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.modern-opt-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.85rem 1.15rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.modern-opt-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

.modern-opt-card.selected {
  background: rgba(99, 102, 241, 0.18);
  border-color: var(--accent-indigo);
}

.modern-opt-card.correct-highlight {
  background: rgba(16, 185, 129, 0.22) !important;
  border-color: #10b981 !important;
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.3) !important;
}

.modern-opt-card.correct-highlight .opt-badge {
  background: #10b981 !important;
  color: #ffffff !important;
}

.modern-opt-card.wrong-highlight {
  background: rgba(244, 63, 94, 0.22) !important;
  border-color: #f43f5e !important;
  box-shadow: 0 0 15px rgba(244, 63, 94, 0.3) !important;
}

.modern-opt-card.wrong-highlight .opt-badge {
  background: #f43f5e !important;
  color: #ffffff !important;
}

.modern-opt-card.revealed-correct {
  background: rgba(16, 185, 129, 0.12) !important;
  border: 2px dashed #10b981 !important;
}

.modern-opt-card.revealed-correct .opt-badge {
  background: #10b981 !important;
  color: #ffffff !important;
}

.opt-badge {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text-main);
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.modern-opt-card.selected .opt-badge {
  background: var(--accent-indigo);
  color: #ffffff;
}

.opt-feedback-pill {
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-shrink: 0;
}

.opt-feedback-correct {
  background: rgba(16, 185, 129, 0.25);
  color: var(--t-green, #34d399);
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.opt-feedback-wrong {
  background: rgba(244, 63, 94, 0.25);
  color: var(--t-rose, #fb7185);
  border: 1px solid rgba(244, 63, 94, 0.4);
}

.opt-feedback-key {
  background: rgba(6, 182, 212, 0.25);
  color: var(--t-sky, #38bdf8);
  border: 1px solid rgba(6, 182, 212, 0.4);
}

/* Quiz Controls Bar */
.modern-quiz-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.modern-ans-box {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-emerald);
  color: var(--accent-emerald);
  padding: 0.85rem 1.25rem;
  border-radius: 10px;
  margin-top: 1.25rem;
  font-weight: 700;
}

/* =========================================================
   RIGHT SIDE: ACTIVE TOPIC FOCUS & CHAPTER HUD
   Replaces the useless question palette with rich chapter HUD
   ========================================================= */

.practice-topic-hud {
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.hud-card {
  background: var(--bg-card);
  border: none;
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  padding: 1rem;
  box-shadow: none;
}

.hud-card-label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.hud-subject-badge {
  display: inline-block;
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  padding: 0.2rem 0.65rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.hud-topic-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 1.1rem;
}

.hud-progress-section {
  margin-bottom: 1rem;
}

.hud-progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

.hud-progress-track {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.hud-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald));
  border-radius: 6px;
  transition: width 0.35s ease;
}

.hud-mini-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.hud-stat-box {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 0.45rem 0.2rem;
}

.hud-stat-num {
  font-size: 1.05rem;
  font-weight: 800;
  display: block;
}

.hud-stat-lbl {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Quick Calculator Card in HUD */
.hud-calc-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.08), rgba(234, 88, 12, 0.04));
  border-color: rgba(249, 115, 22, 0.25);
}

.hud-calc-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hud-calc-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(249, 115, 22, 0.18);
  color: #f97316;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.btn-hud-calc {
  width: 100%;
  background: rgba(249, 115, 22, 0.12);
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #f97316;
  padding: 0.6rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-hud-calc:hover {
  background: #f97316;
  color: #fff;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

/* Chapters in Subject List */
.hud-topics-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 250px;
  overflow-y: auto;
  padding-right: 4px;
}

.hud-topic-chip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
}

.hud-topic-chip:hover {
  border-color: var(--accent-cyan);
  color: var(--text-main);
  background: var(--bg-card-hover);
}

.hud-topic-chip.active {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 700;
}

.hud-chip-count {
  font-size: 0.75rem;
  background: var(--bg-card);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  flex-shrink: 0;
}

.hud-topic-chip.active .hud-chip-count {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.2);
}

/* =========================================================
   PRACTICE MODE: CHAPTER SWITCHER, TOPICS EXPLORER & QUESTION PALETTE
   ========================================================= */

.practice-chapters-box {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 4px;
}

.practice-chapter-btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.85rem;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.practice-chapter-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--text-main);
  background: var(--bg-card-hover);
}

.practice-chapter-btn.active {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 700;
}

.practice-chapter-count {
  font-size: 0.74rem;
  background: var(--bg-card);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  flex-shrink: 0;
}

.practice-chapter-btn.active .practice-chapter-count {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.2);
}

/* Chapter Topics Pill Cloud */
.chapter-topics-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
  max-height: 140px;
  overflow-y: auto;
  padding: 0.2rem 0;
}

.chapter-topic-pill {
  font-size: 0.76rem;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--accent-indigo);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all 0.15s ease;
}

.chapter-topic-pill.active {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 700;
}

/* Question Palette for Practice Mode */
.practice-palette-container {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.practice-pal-legend {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--text-muted);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-color);
}

.pal-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.practice-pal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: 0.45rem;
  max-height: 230px;
  overflow-y: auto;
  padding-right: 4px;
}

.practice-pal-btn {
  height: 36px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-muted);
  transition: all 0.15s ease;
  position: relative;
}

.practice-pal-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--text-main);
  transform: translateY(-1px);
}

.practice-pal-btn.active {
  border: 2px solid var(--accent-cyan) !important;
  color: #ffffff !important;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.4) !important;
  background: rgba(6, 182, 212, 0.25) !important;
}

.practice-pal-btn.pal-correct {
  background: rgba(16, 185, 129, 0.2) !important;
  border-color: #10b981 !important;
  color: #34d399 !important;
}

.practice-pal-btn.pal-wrong {
  background: rgba(244, 63, 94, 0.2) !important;
  border-color: #f43f5e !important;
  color: #fb7185 !important;
}

.practice-pal-btn.pal-skipped {
  background: rgba(245, 158, 11, 0.15) !important;
  border-color: #f59e0b !important;
  color: #fbbf24 !important;
}

.practice-pal-btn.pal-visited {
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--text-main);
}

/* Dynamic Action Button Transition */
.btn-submit-converted-next {
  background: linear-gradient(135deg, #0284c7, #2563eb) !important;
  box-shadow: 0 0 16px rgba(2, 132, 199, 0.45) !important;
  font-weight: 800 !important;
  animation: pulseButton 2s infinite ease-in-out;
}

@keyframes pulseButton {
  0% { transform: scale(1); }
  50% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* =========================================================
   DETAILED ANALYZER & MARKS DISTRIBUTION STYLING
   ========================================================= */

.weak-advisor-card {
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.12), rgba(15, 23, 42, 0.85));
  border: 1.5px solid rgba(244, 63, 94, 0.35);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 24px rgba(244, 63, 94, 0.15);
}

.weak-advisor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.weak-advisor-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--t-rose, #fb7185);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-anki-drill-cta {
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  color: #ffffff;
  border: none;
  padding: 0.65rem 1.4rem;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.92rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 16px rgba(244, 63, 94, 0.4);
  transition: all 0.2s ease;
}

.btn-anki-drill-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(244, 63, 94, 0.6);
}

.weak-topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.85rem;
}

.weak-topic-pill-card {
  background: var(--bg-card);
  border: 1px solid rgba(244, 63, 94, 0.25);
  border-radius: 12px;
  padding: 0.85rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.weak-topic-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}

.weak-topic-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Marks Distribution Tabs & Tables */
.marks-dist-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
}

.marks-dist-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
  flex-wrap: wrap;
}

.marks-tab-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.45rem 1rem;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.marks-tab-btn:hover {
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

.marks-tab-btn.active {
  background: rgba(6, 182, 212, 0.18);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.marks-dist-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.marks-dist-table th {
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-weight: 700;
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.marks-dist-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.marks-dist-bar-track {
  width: 120px;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
}

.marks-dist-bar-fill {
  height: 100%;
  border-radius: 4px;
}

/* =========================================================
   OFFICIAL TCS iON GATE TEST TAKING INTERFACE (IMAGE EXACT MATCH)
   Preserved 100% for Subject Wise Test & Full GATE Mock Test
   ========================================================= */

.tcs-interface {
  position: fixed;
  inset: 0;
  background: #fff;
  color: #111111 !important;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  font-family: Arial, sans-serif;
}

/* Force dark text on all standard reading surfaces inside TCS */
.tcs-interface * {
  box-sizing: border-box;
}

/* Top Header Bar */
.tcs-top-bar {
  height: 38px;
  background: #0e668b;
  color: #fff !important;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 700;
}

.tcs-top-bar * {
  color: #fff !important;
}

.tcs-top-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tcs-info-icon {
  background: rgba(255, 255, 255, 0.2);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

.tcs-top-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.tcs-calc-btn-header {
  background: #0284c7;
  color: #ffffff !important;
  border: 1px solid #38bdf8;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  transition: all 0.2s ease;
}

.tcs-calc-btn-header:hover {
  background: #0369a1;
  border-color: #7dd3fc;
}

.tcs-calc-btn-header svg {
  stroke: #ffffff;
  stroke-width: 2.2;
}

/* Section Tabs Sub-Header */
.tcs-sections-bar {
  background: #f0f4f8;
  border-bottom: 1px solid #dcdcdc;
  padding: 0.5rem 1rem 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tcs-tabs-list {
  display: flex;
  gap: 0.5rem;
}

.tcs-tab {
  background: #fff;
  border: 1px solid #ccc;
  border-bottom: none;
  padding: 0.4rem 1rem;
  font-weight: 700;
  font-size: 0.85rem;
  color: #0073b7 !important;
  cursor: pointer;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tcs-tab.active {
  background: #0073b7;
  color: #fff !important;
  border-color: #0073b7;
}

.tcs-tab.active * {
  color: #fff !important;
}

.tcs-time-left {
  font-size: 0.95rem;
  font-weight: 700;
  color: #111111 !important;
}

/* Question Info Sub-Bar */
.tcs-q-subbar {
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
  padding: 0.4rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #111111 !important;
}

.tcs-q-type-lbl { font-weight: 700; color: #111111 !important; }
.tcs-q-marks-lbl { color: #444444 !important; }

/* Main Split View */
.tcs-main-body {
  flex: 1;
  display: flex;
  overflow: hidden;
  background: #ffffff;
}

/* Left Question Panel */
.tcs-question-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.5rem;
  overflow-y: auto;
  background: #ffffff !important;
  color: #111111 !important;
  border-right: 1px solid #d0d7de;
}

.tcs-q-number {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: #111111 !important;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 0.5rem;
}

.tcs-q-text {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  color: #111111 !important;
}

.tcs-q-text * {
  color: #111111 !important;
}

.tcs-q-text img {
  max-width: 100%;
  height: auto;
  border: 1px solid #ccc;
  margin: 0.75rem 0;
  border-radius: 4px;
}

/* MCQ Radio & MSQ Checkbox Options */
.tcs-mcq-options {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.75rem;
}

#optionsContainer,
#optionsContainer * {
  color: #111111 !important;
}

.tcs-mcq-item, .tcs-msq-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 1.05rem;
  color: #111111 !important;
  cursor: pointer;
  user-select: none;
  padding: 0.65rem 0.9rem;
  border-radius: 6px;
  border: 1.5px solid #cbd5e1;
  background: #ffffff;
  transition: all 0.15s ease;
}

.tcs-mcq-item:hover, .tcs-msq-item:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

.tcs-mcq-item.selected, .tcs-msq-item.selected {
  background: #e0f2fe !important;
  border-color: #0284c7 !important;
}

.tcs-mcq-item *, .tcs-msq-item * {
  color: #111111 !important;
}

.tcs-mcq-radio, .tcs-msq-checkbox {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
  accent-color: #0073b7;
}

.tcs-opt-letter {
  font-weight: 700;
  font-size: 1.05rem;
  color: #0073b7 !important;
  min-width: 28px;
  flex-shrink: 0;
}

.tcs-opt-content {
  color: #111111 !important;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.55;
  flex: 1;
}

.tcs-opt-content * {
  color: #111111 !important;
}

/* MathJax dark color enforcement in TCS interface */
.tcs-interface mjx-container,
.tcs-interface mjx-container *,
.tcs-interface .MathJax,
.tcs-interface .MathJax *,
.tcs-interface svg,
.tcs-interface svg *,
.tcs-interface mjx-c,
.tcs-interface mjx-utext {
  color: #111111 !important;
  fill: #111111 !important;
}

/* NAT Official Keypad Layout (Image 2 Match) */
.tcs-nat-box {
  margin-top: 1rem;
  color: #111111 !important;
}

.tcs-nat-box * {
  color: #111111 !important;
}

.tcs-nat-display {
  width: 220px;
  height: 34px;
  border: 1px solid #999;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0 0.5rem;
  text-align: right;
  margin-bottom: 0.75rem;
  background: #fff;
  outline: none;
}

.tcs-nat-keypad {
  width: 160px;
  border: 1px solid #b2b2b2;
  background: #e6e6e6;
  padding: 6px;
  border-radius: 6px;
}

.tcs-nat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.tcs-nat-btn {
  height: 34px;
  background: #fff;
  border: 1px solid #888;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tcs-nat-btn:hover { background: #e2e8f0; }

.tcs-nat-btn-wide {
  grid-column: span 3;
  background: #f0f0f0;
  height: 32px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Right Candidate & Palette Sidebar */
.tcs-sidebar {
  width: 320px;
  background: #f4f8fb;
  display: flex;
  flex-direction: column;
}

.tcs-candidate-card {
  background: #fff;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #d0d7de;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tcs-avatar-img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #c2d6e5 url('https://upload.wikimedia.org/wikipedia/commons/7/7c/Profile_avatar_placeholder_large.png') center/cover;
  border: 1px solid #aaa;
}

.tcs-candidate-name {
  font-size: 1rem;
  font-weight: 700;
  color: #222 !important;
}

/* Palette Status Legend (Image 1, 2, 3 Match) */
.tcs-legend-table {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid #d0d7de;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.75rem;
  background: #fff;
  color: #222 !important;
}

.tcs-legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  line-height: 1.2;
  color: #222 !important;
}

.tcs-legend-item span {
  color: #222 !important;
}

.tcs-badge {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff !important;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.tcs-badge-ans { background: #4caf50; clip-path: polygon(0 0, 100% 0, 100% 70%, 50% 100%, 0 70%); }
.tcs-badge-not-ans { background: #d9534f; clip-path: polygon(50% 0, 100% 30%, 100% 100%, 0 100%, 0 30%); }
.tcs-badge-not-visited { background: #e0e0e0; color: #333 !important; border-radius: 3px; border: 1px solid #ccc; }
.tcs-badge-marked { background: #8e44ad; border-radius: 50%; }
.tcs-badge-ans-marked { background: #8e44ad; border-radius: 50%; position: relative; }
.tcs-badge-ans-marked::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 8px;
  height: 8px;
  background: #4caf50;
  border: 1px solid #fff;
}

/* Question Palette Section Header */
.tcs-palette-header {
  background: #0073b7;
  color: #fff !important;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.tcs-palette-grid-box {
  flex: 1;
  padding: 0.85rem;
  overflow-y: auto;
  background: #f4f8fb;
  color: #222 !important;
}

.tcs-palette-grid-box > div {
  color: #222 !important;
}

.tcs-palette-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.tcs-p-btn {
  height: 36px;
  border: none;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff !important;
  transition: opacity 0.15s ease;
}

.tcs-p-btn:hover { opacity: 0.85; }
.tcs-p-btn.active { outline: 2px solid #000; outline-offset: 1px; }

.tcs-p-btn.st-not-visited { background: #e0e0e0; color: #333 !important; border: 1px solid #ccc; border-radius: 3px; }
.tcs-p-btn.st-not-answered { background: #d9534f; clip-path: polygon(50% 0, 100% 30%, 100% 100%, 0 100%, 0 30%); }
.tcs-p-btn.st-answered { background: #4caf50; clip-path: polygon(0 0, 100% 0, 100% 70%, 50% 100%, 0 70%); }
.tcs-p-btn.st-marked { background: #8e44ad; border-radius: 50%; }
.tcs-p-btn.st-ans-marked { background: #8e44ad; border-radius: 50%; position: relative; }
.tcs-p-btn.st-ans-marked::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  background: #4caf50;
  border: 1px solid #fff;
}

/* Bottom Action Bar */
.tcs-bottom-bar {
  height: 52px;
  background: #fff;
  border-top: 1px solid #d0d7de;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 1rem;
  overflow-x: auto;
}

.tcs-btn-left-group, .tcs-btn-right-group {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-shrink: 0;
}

.tcs-btn-action {
  background: #fff;
  border: 1px solid #ccc;
  color: #333 !important;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.tcs-btn-action:hover { background: #f0f0f0; }

.tcs-btn-save {
  background: #0073b7;
  color: #fff;
  border: none;
  padding: 0.4rem 1.1rem;
  font-weight: 700;
}

.tcs-btn-save:hover { background: #005a92; }

.tcs-btn-submit {
  background: #4ba6c6;
  color: #fff;
  border: none;
  padding: 0.4rem 1.1rem;
  font-weight: 700;
}

.tcs-btn-submit:hover { background: #388ba8; }

.tcs-footer-version {
  height: 20px;
  background: #546e7a;
  color: #fff;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* OFFICIAL TCS iON SCIENTIFIC CALCULATOR */
.tcs-calc-modal {
  position: fixed;
  top: 70px;
  right: 100px;
  width: 480px;
  background: #d4d4d4;
  border: 1px solid #aaa;
  border-bottom: 6px solid #888;
  border-radius: 6px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
  z-index: 3000;
  display: none;
  flex-direction: column;
  user-select: none;
  font-family: Arial, Helvetica, sans-serif;
  overflow: hidden;
}

.tcs-calc-modal.show { display: flex; }

#helptopDiv {
  background-color: #3b82f6;
  color: #ffffff;
  padding: 8px 12px;
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: move;
}

.tcs-top-btn-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.tcs-calc-help-btn {
  background: #38bdf8;
  color: #fff;
  border: none;
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

.tcs-calc-icon-btn {
  background: transparent;
  color: #fff;
  border: none;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  padding: 0 4px;
}

#mainContentArea {
  padding: 12px;
  background: #d4d4d4;
}

.keyPad_TextBox1 {
  width: 100%;
  height: 32px;
  background: #fff;
  border: 1px solid #aaa;
  border-radius: 4px;
  margin-bottom: 6px;
  font-family: Arial, sans-serif;
  font-size: 1.1rem;
  padding: 0 8px;
  color: #333;
  text-align: right;
  outline: none;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.keyPad_TextBox {
  width: 100%;
  height: 38px;
  background: #fff;
  border: 1px solid #aaa;
  border-radius: 4px;
  margin-bottom: 10px;
  font-family: Arial, sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  padding: 0 8px;
  color: #000;
  text-align: right;
  outline: none;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.tcs-calc-row1 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.tcs-row1-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tcs-btn-mod {
  background: #f1f1f1;
  border: 1px solid #aaa;
  border-bottom: 3px solid #999;
  border-radius: 4px;
  color: #222;
  font-size: 13px;
  font-weight: bold;
  height: 28px;
  padding: 0 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tcs-deg-rad {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: bold;
  color: #111;
}

.tcs-mem-group {
  display: flex;
  gap: 4px;
}

.tcs-btn-mem {
  background: #f1f1f1;
  border: 1px solid #aaa;
  border-bottom: 3px solid #999;
  border-radius: 4px;
  color: #222;
  font-size: 11px;
  font-weight: bold;
  height: 28px;
  width: 34px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tcs-keypad-grid {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
  gap: 4px;
}

.tcs-kbtn {
  background: #f1f1f1;
  border: 1px solid #aaa;
  border-bottom: 3px solid #999;
  border-radius: 4px;
  color: #222;
  font-size: 13px;
  font-weight: bold;
  height: 34px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.tcs-kbtn:hover { background: #e5e5e5; }
.tcs-kbtn:active { border-bottom-width: 1px; transform: translateY(1px); }

.tcs-kbtn-red {
  background: #e74c3c !important;
  border: 1px solid #c0392b !important;
  border-bottom: 3px solid #962d22 !important;
  color: #fff !important;
  font-size: 14px !important;
}

.tcs-kbtn-red:hover { background: #d63031 !important; }

.tcs-btn-back {
  grid-column: span 2;
  font-size: 16px !important;
}

.tcs-btn-zero {
  grid-column: span 2;
}

.tcs-btn-equal {
  grid-row: span 2;
  height: 72px !important;
  background: #2ecc71 !important;
  border: 1px solid #27ae60 !important;
  border-bottom: 3px solid #1e8449 !important;
  color: #fff !important;
  font-size: 20px !important;
}

.tcs-btn-equal:hover { background: #27ae60 !important; }

.subscript, .superscript {
  font-size: 0.7em;
  position: relative;
}

.superscript { top: -0.4em; }
.subscript { top: 0.3em; }

#helpContent {
  height: 260px;
  overflow-y: auto;
  padding: 10px;
  background: #fff;
  border-radius: 4px;
}

.hidden { display: none !important; }

/* ==========================================================================
   USER PROFILE, STREAK, ANALYTICS & LONG RETENTION MODE STYLES
   ========================================================================== */

/* Navbar User Controls */
.user-nav-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-profile-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.user-profile-pill:hover {
  border-color: var(--accent-indigo);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-1px);
}

.user-avatar-badge {
  font-size: 1.25rem;
  line-height: 1;
}

.user-name-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(239, 68, 68, 0.2));
  color: #f97316;
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 800;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
  animation: streakGlow 2s infinite alternate;
}

@keyframes streakGlow {
  0% { box-shadow: 0 0 5px rgba(245, 158, 11, 0.2); }
  100% { box-shadow: 0 0 14px rgba(245, 158, 11, 0.5); }
}

.btn-analytics-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
  color: var(--accent-indigo);
  border: 1px solid rgba(99, 102, 241, 0.4);
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-analytics-nav:hover {
  background: var(--accent-indigo);
  color: #fff;
  transform: translateY(-1px);
}

/* User Creation & Switcher Modal */
.user-modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 92%;
  max-width: 540px;
  padding: 2rem;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(20px);
}

.avatar-selector-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin: 1rem 0 1.5rem 0;
}

.avatar-option-btn {
  font-size: 2rem;
  padding: 0.75rem;
  background: rgba(148, 163, 184, 0.08);
  border: 2px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-option-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  transform: scale(1.08);
}

.avatar-option-btn.selected {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.2);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
}

.user-switch-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 1.5rem;
}

.user-switch-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition-base);
}

.user-switch-item:hover {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--accent-indigo);
}

.user-switch-item.active {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
}

/* Analytics Dashboard Layout */
.analytics-container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.5rem 4rem 1.5rem;
}

.analytics-hero-banner {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.95)),
              radial-gradient(circle at top right, rgba(99, 102, 241, 0.25), transparent 60%);
  border: 1px solid var(--border-accent);
  border-radius: 20px;
  padding: 2rem;
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  box-shadow: var(--shadow-xl);
}

.analytics-user-profile {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.analytics-big-avatar {
  font-size: 3.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid var(--accent-cyan);
  border-radius: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.analytics-user-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.analytics-user-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

/* Analytics Stats Grid */
.analytics-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.analytics-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

.analytics-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-accent);
}

.analytics-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.analytics-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
}

.analytics-lbl {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Subject Mastery Progress Bars */
.subject-mastery-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.75rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.subject-mastery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.subject-mastery-card {
  background: rgba(148, 163, 184, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: var(--transition-base);
}

.subject-mastery-card:hover {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
}

.subject-mastery-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.progress-bar-bg {
  height: 8px;
  width: 100%;
  background: rgba(148, 163, 184, 0.2);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
  border-radius: 9999px;
  transition: width 0.8s ease-in-out;
}

.subject-mastery-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Question History & Detailed Inspector Table */
.question-history-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
}

.history-filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  margin: 1.25rem 0;
}

.filter-pills-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-pill-btn {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
}

.filter-pill-btn.active {
  background: var(--accent-indigo);
  color: #fff;
  border-color: var(--accent-indigo);
}

.history-table-container {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.history-table th {
  background: rgba(15, 23, 42, 0.6);
  color: var(--text-muted);
  padding: 0.85rem 1rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
}

.history-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.history-table tr:hover {
  background: rgba(99, 102, 241, 0.05);
}

.badge-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.8rem;
}

.badge-stat-correct { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.badge-stat-wrong { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }
.badge-stat-skipped { background: rgba(148, 163, 184, 0.15); color: var(--text-muted); }

/* =========================================================
   COMPETITIVE ARENA & LEADERBOARD STYLES
   ========================================================= */

.competitive-hero-bar {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.95) 0%, rgba(49, 46, 129, 0.85) 50%, rgba(67, 56, 202, 0.75) 100%);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 18px;
  padding: 1.75rem 2rem;
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  box-shadow: 0 12px 35px -10px rgba(99, 102, 241, 0.3);
  backdrop-filter: blur(12px);
}

@media (max-width: 900px) {
  .competitive-hero-bar {
    grid-template-columns: 1fr;
  }
}

.comp-rank-badge-box {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.comp-trophy-avatar {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
  flex-shrink: 0;
}

.comp-rank-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.comp-tier-pill {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
}

.comp-rank-sub {
  font-size: 0.95rem;
  color: #cbd5e1;
  margin-top: 0.35rem;
  line-height: 1.5;
}

.comp-daily-target-card {
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 1.15rem 1.4rem;
  min-width: 280px;
}

.comp-target-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 0.6rem;
}

.comp-target-bar-bg {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.comp-target-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald));
  border-radius: 999px;
  transition: width 0.6s ease;
}

.comp-target-footer {
  font-size: 0.8rem;
  color: var(--t-slate, #94a3b8);
  display: flex;
  justify-content: space-between;
}

/* Quick Filter Chips */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.4rem 0 0.85rem 0;
}

.chip-btn {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.3rem 0.75rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.chip-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  color: var(--text-main);
  border-color: var(--border-accent);
}

.chip-btn.active {
  background: var(--accent-indigo);
  color: #fff;
  border-color: var(--accent-indigo);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

/* Modal Dialog Large */
.modal-dialog-large {
  max-width: 680px;
}

/* Mode Choice Cards in Setup */
.mode-toggle-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.mode-toggle-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.mode-toggle-card:hover {
  border-color: var(--border-accent);
}

.mode-toggle-card.selected {
  border-color: var(--accent-indigo);
  background: rgba(99, 102, 241, 0.1);
}

/* Leaderboard View */
.leaderboard-container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.podium-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 1.25rem;
  align-items: flex-end;
  margin: 2rem 0 3rem;
}

@media (max-width: 768px) {
  .podium-grid {
    grid-template-columns: 1fr;
    align-items: stretch;
  }
}

.podium-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 1.75rem 1.25rem;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease;
}

.podium-card:hover {
  transform: translateY(-4px);
}

.podium-card-1st {
  border-color: rgba(245, 158, 11, 0.6);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.12) 0%, var(--bg-card) 60%);
  transform: scale(1.04);
}

.podium-card-2nd {
  border-color: rgba(148, 163, 184, 0.5);
  background: linear-gradient(180deg, rgba(148, 163, 184, 0.1) 0%, var(--bg-card) 60%);
}

.podium-card-3rd {
  border-color: rgba(205, 127, 50, 0.5);
  background: linear-gradient(180deg, rgba(205, 127, 50, 0.1) 0%, var(--bg-card) 60%);
}

.podium-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 0.75rem;
}

.podium-badge-gold { background: #f59e0b; color: #fff; box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4); }
.podium-badge-silver { background: #94a3b8; color: #fff; box-shadow: 0 4px 14px rgba(148, 163, 184, 0.4); }
.podium-badge-bronze { background: #cd7f32; color: #fff; box-shadow: 0 4px 14px rgba(205, 127, 50, 0.4); }

.podium-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.podium-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.podium-xp {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-amber);
}

/* User Leaderboard Row Highlight */
.leaderboard-table tr.user-row {
  background: rgba(99, 102, 241, 0.18) !important;
  border-left: 4px solid var(--accent-indigo);
  font-weight: 700;
}

.leaderboard-table tr.user-row td {
  color: var(--text-main);
}

/* Scratchpad Window */
.scratchpad-window {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 440px;
  height: 420px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  z-index: 2500;
  overflow: hidden;
  transition: all 0.25s ease;
}

.scratchpad-header {
  background: rgba(15, 23, 42, 0.85);
  padding: 0.65rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
  font-weight: 700;
}

.scratchpad-toolbar {
  padding: 0.5rem 0.85rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.scratchpad-tool-btn {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.scratchpad-tool-btn.active {
  background: var(--accent-indigo);
  color: #fff;
  border-color: var(--accent-indigo);
}

.scratchpad-canvas {
  flex: 1;
  background: #111827;
  cursor: crosshair;
  width: 100%;
}

/* Question Action Buttons */
.q-action-icon-btn {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s ease;
}

.q-action-icon-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  color: var(--text-main);
  border-color: var(--border-accent);
}

.q-action-icon-btn.active {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  border-color: var(--accent-amber);
}

.q-bench-pill {
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Modern Stopwatch & Visited Pills */
.practice-stopwatch-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: rgba(99, 102, 241, 0.18);
  border: 1px solid var(--border-accent);
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-indigo);
  letter-spacing: 0.5px;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.practice-visited-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: 20px;
  font-size: 0.88rem;
  color: var(--accent-emerald);
  font-weight: 700;
}

.btn-finish-practice {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #ffffff;
  border: 1px solid rgba(239, 68, 68, 0.6);
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.btn-finish-practice:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  box-shadow: 0 6px 18px rgba(239, 68, 68, 0.45);
}

.practice-action-hint {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.practice-action-hint.hidden {
  display: none !important;
}

#btnPracticeNext:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  filter: grayscale(0.5);
  pointer-events: none;
}

.p-qbadge.status-correct {
  background: rgba(16, 185, 129, 0.25) !important;
  border-color: var(--accent-emerald) !important;
  color: var(--accent-emerald) !important;
}

.p-qbadge.status-wrong {
  background: rgba(244, 63, 94, 0.25) !important;
  border-color: var(--accent-rose) !important;
  color: var(--accent-rose) !important;
}

.p-qbadge.status-skipped {
  background: rgba(148, 163, 184, 0.25) !important;
  border-color: var(--text-muted) !important;
  color: var(--text-muted) !important;
}

@media (max-width: 900px) {
  .modern-quiz-layout {
    flex-direction: column;
  }
  .practice-topic-hud {
    width: 100%;
  }
  .practice-sleek-header {
    flex-direction: column;
    align-items: stretch;
  }
  .practice-header-left, .practice-header-center, .practice-header-right {
    justify-content: center;
  }
}

/* =========================================================
   DETAILED ANALYTICS v2: container, hero banner, tabs, KPI cards, trees, drawer
   ========================================================= */

.analytics-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  min-height: calc(100vh - 70px);
}

.analytics-hero-banner {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.9));
  border: 1px solid rgba(99, 102, 241, 0.28);
  border-radius: 20px;
  padding: 1.75rem 2rem;
  margin-bottom: 1.75rem;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35), 0 0 35px rgba(99, 102, 241, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.analytics-hero-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.analytics-user-profile {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.analytics-big-avatar {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.2));
  border: 1.5px solid rgba(99, 102, 241, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.analytics-user-title {
  font-size: 1.4rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.2;
}

.analytics-user-sub {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.ana-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.4rem;
  border-radius: 14px;
  border: 1px solid var(--border-color);
  margin-bottom: 1.75rem;
}

.ana-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.65rem 1.15rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.ana-tab-btn:hover {
  color: var(--text-main);
  background: rgba(148, 163, 184, 0.08);
}

.ana-tab-btn.active {
  color: var(--t-sky, #38bdf8);
  background: rgba(6, 182, 212, 0.14);
  border-color: rgba(6, 182, 212, 0.35);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.2);
}

.ana-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-card);
  min-width: 0;
}
.ana-card-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 1rem;
}
.ana-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
@media (max-width: 1000px) { .ana-grid-2 { grid-template-columns: minmax(0, 1fr); } }

.ana-muted, .ana-hint { color: var(--text-muted); font-weight: 500; }
.ana-hint { font-size: 0.86rem; line-height: 1.5; margin: 0.5rem 0 0; }
.ana-muted-line { color: var(--text-muted); font-size: 0.85rem; margin: 0.25rem 0 0.75rem; }
.ana-divider { height: 1px; background: var(--border-color); margin: 0.9rem 0; }
.ana-callout {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  margin-bottom: 1.25rem;
  color: var(--text-main);
  font-size: 0.92rem;
}

/* KPI row */
.ana-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.ana-kpi {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.ana-kpi-label { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.ana-kpi-val { font-size: 1.9rem; font-weight: 800; color: var(--text-main); line-height: 1.15; }
.ana-kpi-sub { font-size: 0.8rem; color: var(--text-muted); }
.ana-kpi-action .ana-link-btn { align-self: flex-start; margin-top: 0.4rem; }

.ana-link-btn {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 0.84rem;
  cursor: pointer;
  padding: 0.15rem 0;
  white-space: nowrap;
}
.ana-link-btn:hover { text-decoration: underline; }

/* Mastery stack bar + legend */
.ana-stackbar {
  display: flex;
  height: 16px;
  border-radius: 9999px;
  overflow: hidden;
  background: rgba(148, 163, 184, 0.15);
}
.ana-legend { display: flex; flex-wrap: wrap; gap: 0.5rem 1.1rem; margin-top: 0.9rem; font-size: 0.85rem; color: var(--text-muted); }
.ana-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 0.35rem; }
.ana-legend strong { color: var(--text-main); }

/* 14-day activity chart */
.ana-activity { display: flex; align-items: flex-end; gap: 6px; height: 160px; padding-top: 0.5rem; }
.ana-day { flex: 1; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 4px; min-width: 0; }
.ana-day > span { font-size: 0.66rem; color: var(--text-dim); }
.ana-day-bar { width: 100%; max-width: 26px; display: flex; flex-direction: column-reverse; border-radius: 4px 4px 0 0; overflow: hidden; background: rgba(148, 163, 184, 0.12); min-height: 3px; }

/* Bars and badges */
.ana-bar { display: flex; align-items: center; gap: 0.5rem; min-width: 90px; }
.ana-bar-track { flex: 1; height: 8px; background: rgba(148, 163, 184, 0.18); border-radius: 9999px; overflow: hidden; }
.ana-bar-fill { height: 100%; border-radius: 9999px; transition: width 0.5s ease; }
.ana-bar-val { font-size: 0.82rem; font-weight: 800; min-width: 38px; text-align: right; }
.ana-bar-val.muted { color: var(--text-dim); font-weight: 600; }

.ana-badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 6px; font-size: 0.74rem; font-weight: 700; white-space: nowrap; }
.ana-st-weak { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }
.ana-st-strong, .ana-st-mastered { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.ana-st-needs_revision, .ana-st-learning { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.ana-st-low_data { background: rgba(99, 102, 241, 0.15); color: var(--accent-indigo); }
.ana-st-untested, .ana-st-unseen { background: rgba(148, 163, 184, 0.15); color: var(--text-muted); }

.ana-trend { font-weight: 800; font-size: 0.85rem; }
.ana-trend.up { color: var(--accent-emerald); }
.ana-trend.down { color: var(--accent-rose); }
.ana-trend.flat { color: var(--text-dim); }

/* Focus lists & chips */
.ana-focus-row { display: flex; align-items: center; gap: 0.8rem; padding: 0.6rem 0; border-bottom: 1px solid var(--border-color); }
.ana-focus-row:last-child { border-bottom: none; }
.ana-rank { width: 24px; height: 24px; border-radius: 50%; background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); font-size: 0.78rem; font-weight: 800; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ana-focus-main { flex: 1; min-width: 0; }
.ana-focus-name { font-weight: 700; font-size: 0.92rem; color: var(--text-main); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ana-focus-path { font-size: 0.76rem; color: var(--text-muted); margin-top: 0.1rem; }
.ana-focus-nums { display: flex; flex-direction: column; align-items: flex-end; font-size: 0.76rem; color: var(--text-muted); }
.ana-focus-nums strong { font-size: 1rem; }
.ana-chip-row { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.ana-chip { background: rgba(148, 163, 184, 0.12); border: 1px solid var(--border-color); border-radius: 9999px; padding: 0.2rem 0.7rem; font-size: 0.78rem; color: var(--text-main); font-weight: 600; }
.ana-chip small { color: var(--text-muted); font-weight: 500; margin-left: 0.25rem; }
.ana-anki-btn { padding: 0.45rem 0.9rem !important; font-size: 0.82rem !important; }

.ana-metric-simple { display: grid; grid-template-columns: 90px minmax(100px, 1fr) minmax(120px, 1.2fr); gap: 0.75rem; align-items: center; padding: 0.35rem 0; font-size: 0.86rem; }
.ana-metric-simple-name { font-weight: 700; color: var(--text-main); }
.ana-metric-simple-sub { color: var(--text-muted); font-size: 0.76rem; }

/* Subject / chapter / topic tree */
.ana-metric-row {
  display: grid;
  grid-template-columns: minmax(170px, 2.2fr) 105px minmax(110px, 1.3fr) 150px 60px 70px 24px 90px;
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem 0.5rem;
  font-size: 0.86rem;
}
.ana-metric-head { color: var(--text-dim); font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; border-bottom: 1px solid var(--border-color); }
.ana-metric-name { font-weight: 700; color: var(--text-main); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ana-metric-name small { color: var(--text-dim); font-weight: 500; margin-left: 0.3rem; }
.ana-metric-nums, .ana-metric-cov, .ana-metric-time { color: var(--text-muted); font-size: 0.8rem; white-space: nowrap; }
.ana-metric-action { text-align: right; }
@media (max-width: 1150px) {
  .ana-metric-row { grid-template-columns: minmax(150px, 2fr) 100px minmax(100px, 1.2fr) 60px 24px 80px; }
  .ana-metric-nums, .ana-metric-time { display: none; }
}

.ana-details { border-top: 1px solid var(--border-color); }
.ana-details > summary { list-style: none; cursor: pointer; border-radius: 8px; }
.ana-details > summary::-webkit-details-marker { display: none; }
.ana-details > summary:hover { background: rgba(99, 102, 241, 0.06); }
.ana-details > summary .ana-metric-name::before { content: '\25B8'; display: inline-block; width: 1rem; color: var(--text-dim); transition: transform 0.15s; }
.ana-details[open] > summary .ana-metric-name::before { transform: rotate(90deg); }
.ana-details-body { padding-left: 1.4rem; }
.ana-details-nested { border-top: 1px dashed var(--border-color); }
.ana-details-body > .ana-metric-row .ana-metric-name { padding-left: 1rem; }

/* Tables */
.ana-filter-bar { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 0.75rem; }
.ana-input, .ana-select {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  padding: 0.5rem 0.8rem;
  font-size: 0.88rem;
}
.ana-input { flex: 1 1 240px; min-width: 200px; }
.ana-select { cursor: pointer; }
.ana-input:focus, .ana-select:focus { outline: none; border-color: var(--accent-cyan); }

.ana-q-table th { cursor: pointer; user-select: none; white-space: nowrap; }
.ana-q-table th.sorted-asc::after { content: ' \25B2'; color: var(--accent-cyan); font-size: 0.7rem; }
.ana-q-table th.sorted-desc::after { content: ' \25BC'; color: var(--accent-cyan); font-size: 0.7rem; }
.ana-q-table th.num, .ana-q-table td.num, .ana-mini-table th.num, .ana-mini-table td.num { text-align: right; }
.ana-click { cursor: pointer; }
.ana-click:hover { background: rgba(6, 182, 212, 0.07); }
.ana-empty { text-align: center; padding: 2rem; color: var(--text-muted); }

.ana-mini-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
.ana-mini-table th { text-align: left; color: var(--text-dim); font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border-color); }
.ana-mini-table td { padding: 0.55rem 0.6rem; border-bottom: 1px solid var(--border-color); }

.ana-pager { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; margin-top: 1rem; }
.ana-pager-info { color: var(--text-muted); font-size: 0.85rem; }
.ana-pager-btns { display: flex; gap: 0.4rem; flex-wrap: wrap; align-items: center; }
.ana-pager-btns .filter-pill-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Per-question drawer */
.q-drawer-overlay { position: fixed; inset: 0; background: rgba(2, 6, 23, 0.6); z-index: 900; }
.q-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(560px, 100vw);
  background: var(--bg-primary);
  border-left: 1px solid var(--border-accent);
  box-shadow: -20px 0 50px rgba(0, 0, 0, 0.45);
  z-index: 901;
  overflow-y: auto;
  padding: 1.5rem;
}
.q-drawer-head { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; margin-bottom: 1.25rem; }
.q-drawer-title { font-size: 1.35rem; font-weight: 800; color: var(--text-main); }
.q-drawer-close { background: rgba(148, 163, 184, 0.12); border: 1px solid var(--border-color); color: var(--text-main); width: 34px; height: 34px; border-radius: 8px; font-size: 1.3rem; cursor: pointer; flex-shrink: 0; }
.q-drawer-close:hover { border-color: var(--accent-rose); color: var(--accent-rose); }

.q-count-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; margin-bottom: 1rem; }
.q-count { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 0.8rem 0.5rem; text-align: center; }
.q-count-val { font-size: 1.8rem; font-weight: 800; color: var(--text-main); line-height: 1.1; }
.q-count-lbl { font-size: 0.7rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; margin-top: 0.2rem; }
.q-count.good .q-count-val { color: var(--accent-emerald); }
.q-count.bad .q-count-val { color: var(--accent-rose); }
.q-count.skip .q-count-val { color: var(--text-muted); }

.q-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.4rem 1.2rem; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 0.9rem 1.1rem; font-size: 0.85rem; }
.q-facts div { display: flex; justify-content: space-between; gap: 0.5rem; }
.q-facts span { color: var(--text-muted); }
.q-facts strong { color: var(--text-main); }
.q-mastery { display: grid; grid-template-columns: 70px 1fr; gap: 0.2rem 0.75rem; align-items: center; margin-top: 0.9rem; font-size: 0.85rem; color: var(--text-muted); }
.q-mastery small { grid-column: 2; color: var(--text-dim); }

.q-section { margin: 1.4rem 0 0.6rem; font-size: 0.95rem; font-weight: 800; color: var(--text-main); }
.ana-timeline { display: flex; flex-direction: column; }
.ana-tl-row { display: flex; gap: 0.75rem; padding: 0.55rem 0; border-bottom: 1px solid var(--border-color); font-size: 0.86rem; }
.ana-tl-dot { width: 10px; height: 10px; border-radius: 50%; margin-top: 0.4rem; flex-shrink: 0; background: var(--text-dim); }
.ana-tl-correct { background: var(--accent-emerald); }
.ana-tl-wrong { background: var(--accent-rose); }
.ana-tl-meta { color: var(--text-muted); font-size: 0.76rem; margin-top: 0.1rem; }
.ana-tl-main code { background: rgba(148, 163, 184, 0.15); padding: 0.05rem 0.4rem; border-radius: 4px; }

.ana-note { width: 100%; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 10px; color: var(--text-main); padding: 0.7rem; font-family: inherit; font-size: 0.88rem; resize: vertical; }
.q-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.6rem; }
.q-question-box { margin-top: 1.4rem; border: 1px solid var(--border-color); border-radius: 12px; padding: 0.75rem 1rem; }
.q-question-box > summary { font-weight: 700; color: var(--accent-cyan); }
.q-question-html { margin-top: 0.8rem; line-height: 1.6; color: var(--text-main); font-size: 0.92rem; overflow-x: auto; }
.q-options { margin: 0.8rem 0 0 1.4rem; color: var(--text-main); line-height: 1.55; font-size: 0.9rem; }
.q-key { margin-top: 0.8rem; font-size: 0.86rem; color: var(--text-muted); }
.q-key strong { color: var(--accent-emerald); }
.q-key a { color: var(--accent-cyan); }

/* Anki card: reason banner */
.anki-reason-banner {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 10px;
  padding: 0.55rem 0.9rem;
  margin-bottom: 0.75rem;
  font-size: 0.84rem;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.anki-reason-banner span { color: var(--text-muted); font-size: 0.78rem; }

/* =========================================================
   PRACTICE MODE v2: focus mode (no home navbar), slim bar,
   palette-first side panel
   ========================================================= */

body.practice-active {
  overflow: hidden !important;
}

body.practice-active #dashboardHeader {
  display: none !important;
}

body.practice-active #practiceView.dashboard-container,
#practiceView.practice-interface-screen,
#practiceView {
  max-width: none !important;
  width: 100vw !important;
  height: 100vh !important;
  max-height: 100vh !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
  display: flex !important;
  flex-direction: column !important;
  background: var(--bg-primary) !important;
}

#practiceView.hidden {
  display: none !important;
}

#practiceView .practice-workspace {
  display: flex !important;
  flex-direction: column !important;
  height: 100% !important;
  width: 100% !important;
  overflow: hidden !important;
  margin: 0 !important;
  padding: 0 !important;
  gap: 0 !important;
}

/* 1. TOP HEADER BAR */
.practice-bar {
  height: 50px;
  min-height: 50px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  margin: 0;
  z-index: 40;
  position: static;
  box-shadow: none;
}

.practice-bar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.practice-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.practice-mode-badge.badge-exam {
  background: rgba(6, 182, 212, 0.16);
  color: #38bdf8;
  border: 1px solid rgba(6, 182, 212, 0.4);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

.practice-mode-badge.badge-drill {
  background: rgba(168, 85, 247, 0.16);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.4);
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.15);
}

.practice-mode-badge.badge-practice {
  background: rgba(16, 185, 129, 0.16);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.practice-mode-badge.badge-anki {
  background: rgba(245, 158, 11, 0.16);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.practice-bar .practice-stopwatch-pill.timer-warning {
  background: rgba(244, 63, 94, 0.25);
  border-color: #f43f5e;
  color: #fb7185;
  animation: pulse-timer-warn 1.5s infinite;
}

@keyframes pulse-timer-warn {
  0%, 100% { box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(244, 63, 94, 0); }
}

.practice-bar-center {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.practice-bar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.practice-bar .practice-breadcrumbs {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  font-size: 0.88rem;
}

.practice-bar .breadcrumb-subj {
  color: var(--accent-cyan);
  font-weight: 800;
  flex-shrink: 0;
}

.practice-bar .breadcrumb-chap,
.practice-bar .breadcrumb-topic {
  color: var(--text-muted);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

.practice-bar .breadcrumb-topic {
  color: var(--text-main);
}

.practice-bar .practice-stopwatch-pill {
  padding: 0.3rem 0.85rem;
  font-size: 1.05rem;
  box-shadow: none;
}

.practice-progress-line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: transparent;
}

.practice-progress-line i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald));
  transition: width 0.4s ease;
}

.btn-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-bar:hover {
  background: rgba(99, 102, 241, 0.18);
  border-color: var(--border-accent);
}

.btn-bar svg {
  stroke: currentColor;
}

.btn-bar-end {
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.1);
}

.btn-bar-end:hover {
  background: #ef4444;
  color: #fff;
  border-color: #ef4444;
}

/* 2. MAIN MERGED SPLIT BODY (QUESTION + PALETTE) */
#practiceView .modern-quiz-layout {
  flex: 1;
  display: flex;
  overflow: hidden;
  margin: 0;
  padding: 0;
  gap: 0;
  background: var(--bg-primary);
  min-height: 0;
  width: 100%;
  align-items: stretch;
  border: none;
}

/* Left: Single Question Pane */
#practiceView .modern-q-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-card);
  border: none;
  border-right: 1px solid var(--border-color);
  border-radius: 0;
  box-shadow: none;
  margin: 0;
  padding: 0;
  min-height: 0;
  max-width: none;
  backdrop-filter: none;
}

/* Question Meta Sub-Bar (Docked at top of Question Pane) */
#practiceView .q-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 1.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  margin: 0;
  flex-shrink: 0;
  flex-wrap: wrap;
  gap: 0.5rem;
}

#practiceView .q-title-text {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

/* Scrollable Question Content (Body, Options, Solution) */
#practiceView .q-scroll-area {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
  min-height: 0;
}

#practiceView .q-body-content {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

#practiceView .modern-options-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

#practiceView .modern-opt-card {
  padding: 0.95rem 1.25rem;
  font-size: 1.02rem;
  border-radius: 10px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  transition: all 0.15s ease;
}

#practiceView .modern-opt-card:hover:not(.selected) {
  transform: translateX(3px);
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

#practiceView .modern-ans-box {
  margin-bottom: 1rem;
}

#practiceBenchPill:empty {
  display: none;
}

/* Right: Question Palette Sidebar (Seamlessly attached) */
#practiceView .practice-topic-hud {
  width: 320px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: none;
  border-left: 1px solid var(--border-color);
  border-radius: 0;
  box-shadow: none;
  margin: 0;
  padding: 0;
  position: static;
  max-height: none;
  overflow-y: auto;
  gap: 0;
}

.practice-palette-header {
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.practice-pal-title {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.practice-pal-count {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-indigo);
}

.practice-pal-legend {
  padding: 0.6rem 0.85rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.pal-legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.pal-legend-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

#practiceView .practice-pal-grid {
  padding: 0.75rem 0.85rem;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.4rem;
  overflow-y: auto;
  max-height: 280px;
  flex-shrink: 0;
}

#practiceView .practice-pal-btn {
  height: 36px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

#practiceView .practice-pal-btn:hover {
  border-color: var(--accent-indigo);
  color: var(--accent-indigo);
}

#practiceView .practice-pal-btn.active {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 1px;
  font-weight: 800;
}

#practiceView .hud-mini-stats {
  padding: 0.65rem 0.85rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.35rem;
  text-align: center;
  flex-shrink: 0;
  margin: 0;
}

/* Unified Chapters & Topics Tree View */
.practice-tree-container {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  overflow: hidden;
}

.practice-tree-header {
  padding: 0.65rem 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.practice-tree-title {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.practice-tree-count {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.practice-subject-tree {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Tree Branch (Chapter Node) */
.tree-chapter-branch {
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 0.15s ease;
}

.tree-chapter-branch.tree-active-branch {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

.tree-branch-header {
  padding: 0.55rem 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease;
}

.tree-branch-header:hover {
  background: var(--bg-card-hover);
  color: var(--accent-cyan);
}

.tree-chevron {
  font-size: 0.7rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
  display: inline-block;
  width: 14px;
  text-align: center;
}

.tree-chapter-branch.open .tree-chevron {
  transform: rotate(90deg);
}

.tree-branch-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-branch-count {
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.tree-branch-children {
  display: none;
  padding: 0.35rem 0.45rem 0.45rem 1.1rem;
  border-top: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.3);
  flex-direction: column;
  gap: 0.25rem;
  border-left: 2px solid rgba(6, 182, 212, 0.25);
  margin-left: 0.75rem;
  margin-bottom: 0.3rem;
}

.tree-chapter-branch.open .tree-branch-children {
  display: flex;
}

/* Tree Leaf (Topic Node) */
.tree-topic-leaf {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.tree-topic-leaf:hover {
  color: var(--text-main);
  background: var(--bg-card-hover);
}

.tree-topic-leaf.tree-active-leaf {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.15);
  font-weight: 700;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.tree-topic-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-topic-count {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* 3. DOCKED BOTTOM ACTION TOOLBAR */
#practiceView .practice-bottom-bar,
#practiceView .modern-quiz-actions {
  height: 58px;
  min-height: 58px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
  margin: 0;
  border-radius: 0;
  box-shadow: 0 -3px 12px rgba(0, 0, 0, 0.2);
  position: static;
}

.practice-btn-left-group,
.practice-btn-right-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: nowrap;
}

/* Action button styles */
#practiceView .btn-action-submit,
#practiceView #btnPracticeSubmit {
  background: #10b981;
  color: #ffffff;
  border: 1px solid #059669;
  font-size: 0.86rem;
  font-weight: 700;
  height: 38px;
  padding: 0 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
  transition: all 0.15s ease;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.25);
}

#practiceView .btn-action-submit:hover,
#practiceView #btnPracticeSubmit:hover {
  background: #059669;
  transform: translateY(-1px);
}

#practiceView .btn-action-secondary,
#practiceView #btnPracticeSkip,
#practiceView #btnPracticeClear {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-size: 0.84rem;
  font-weight: 600;
  height: 38px;
  padding: 0 0.95rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  transition: all 0.15s ease;
}

#practiceView .btn-action-secondary:hover,
#practiceView #btnPracticeSkip:hover,
#practiceView #btnPracticeClear:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

#practiceView #btnPracticeClear:hover {
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.08);
}

#practiceView .btn-action-nav,
#practiceView #btnPracticePrev {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-size: 0.84rem;
  font-weight: 600;
  height: 38px;
  padding: 0 1.15rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  transition: all 0.15s ease;
}

#practiceView .btn-action-nav:hover,
#practiceView #btnPracticePrev:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

#practiceView #btnPracticePrev:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

#practiceView .btn-action-next,
#practiceView #btnPracticeNext {
  background: var(--accent-indigo);
  color: #ffffff;
  border: 1px solid var(--accent-indigo);
  font-size: 0.86rem;
  font-weight: 700;
  height: 38px;
  padding: 0 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
  transition: all 0.15s ease;
  box-shadow: 0 2px 6px rgba(99, 102, 241, 0.25);
}

#practiceView .btn-action-next:hover,
#practiceView #btnPracticeNext:hover {
  background: #4f46e5;
  border-color: #4f46e5;
  transform: translateY(-1px);
}

/* Converted Submit Button (Next Question state) */
#practiceView .btn-submit-converted-next {
  background: var(--accent-indigo) !important;
  color: #ffffff !important;
  border: 1px solid var(--accent-indigo) !important;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3) !important;
  animation: none !important;
}

#practiceView .btn-submit-converted-next:hover {
  background: #4f46e5 !important;
}

#practiceView .btn-submitted-state {
  background: rgba(16, 185, 129, 0.15) !important;
  color: #10b981 !important;
  border: 1px solid rgba(16, 185, 129, 0.35) !important;
  cursor: default !important;
  opacity: 0.9 !important;
  box-shadow: none !important;
  transform: none !important;
}

#practiceView #btnPracticeClear:disabled {
  opacity: 0.45 !important;
  cursor: not-allowed !important;
  pointer-events: none !important;
}

#practiceView .btn-action-skip,
#practiceView #btnPracticeSkip {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.35);
  font-size: 0.84rem;
  font-weight: 700;
  height: 38px;
  padding: 0 1.05rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
  transition: all 0.15s ease;
}

#practiceView .btn-action-skip:hover:not(:disabled),
#practiceView #btnPracticeSkip:hover:not(:disabled) {
  background: rgba(245, 158, 11, 0.24);
  border-color: #f59e0b;
  color: #ffffff;
  transform: translateY(-1px);
}

#practiceView .btn-action-skip:disabled,
#practiceView #btnPracticeSkip:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Question Solution & Discussion URL Styles */
.btn-view-solution-url {
  background: rgba(6, 182, 212, 0.12) !important;
  border: 1px solid rgba(6, 182, 212, 0.35) !important;
  color: var(--accent-cyan) !important;
}

.btn-view-solution-url:hover {
  background: rgba(6, 182, 212, 0.25) !important;
  border-color: var(--accent-cyan) !important;
}

/* Exam Mode Action Buttons (Save & Next, Mark for Review, Submit Exam) */
#practiceView .btn-action-review,
#practiceView #btnPracticeMarkReview {
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.4);
  color: #c084fc;
  font-size: 0.84rem;
  font-weight: 700;
  height: 38px;
  padding: 0 1rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  transition: all 0.15s ease;
}

#practiceView .btn-action-review:hover,
#practiceView #btnPracticeMarkReview:hover {
  background: rgba(168, 85, 247, 0.28);
  border-color: #a855f7;
  color: #ffffff;
  transform: translateY(-1px);
}

#practiceView .btn-action-finish,
#practiceView #btnPracticeExamSubmit {
  background: linear-gradient(135deg, #059669, #10b981);
  color: #ffffff;
  border: 1px solid #10b981;
  font-size: 0.86rem;
  font-weight: 800;
  height: 38px;
  padding: 0 1.35rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
  transition: all 0.15s ease;
}

#practiceView .btn-action-finish:hover,
#practiceView #btnPracticeExamSubmit:hover {
  background: linear-gradient(135deg, #047857, #059669);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

/* Explicit hide rule overrides for practice toolbar */
#practiceView .hidden,
#practiceView #btnPracticeSkip.hidden,
#practiceView #btnPracticeMarkReview.hidden,
#practiceView #btnPracticeExamSubmit.hidden,
#practiceView .btn-action-review.hidden,
#practiceView .btn-action-finish.hidden,
#practiceView .btn-action-skip.hidden {
  display: none !important;
}

/* Exam Mode Palette Status Classes */
#practiceView .practice-pal-btn.pal-exam-answered {
  background: rgba(16, 185, 129, 0.22) !important;
  border-color: #10b981 !important;
  color: #34d399 !important;
  font-weight: 800 !important;
}

#practiceView .practice-pal-btn.pal-exam-marked {
  background: rgba(168, 85, 247, 0.22) !important;
  border-color: #a855f7 !important;
  color: #c084fc !important;
  font-weight: 800 !important;
}

#practiceView .practice-pal-btn.pal-exam-ans-marked {
  background: rgba(16, 185, 129, 0.22) !important;
  border: 2px solid #a855f7 !important;
  color: #34d399 !important;
  font-weight: 800 !important;
  position: relative;
}

#practiceView .practice-pal-btn.pal-exam-ans-marked::after {
  content: '•';
  position: absolute;
  top: 1px;
  right: 4px;
  color: #c084fc;
  font-size: 1rem;
  line-height: 1;
}

#practiceView .practice-pal-btn.pal-exam-visited {
  background: rgba(249, 115, 22, 0.18) !important;
  border-color: #f97316 !important;
  color: #fb923c !important;
  font-weight: 800 !important;
}

#practiceView .practice-pal-btn.pal-exam-notvisited {
  background: var(--bg-card) !important;
  border-color: var(--border-color) !important;
  color: var(--text-muted) !important;
}

/* Subject breakdown list in Exam Mode sidebar */
.practice-exam-subj-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-main);
  cursor: pointer;
  transition: background 0.15s ease;
}

.practice-exam-subj-row:hover {
  background: rgba(99, 102, 241, 0.08);
}

.practice-exam-subj-badge {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.74rem;
  font-weight: 800;
}

.solution-url-banner {
  margin-top: 0.85rem;
  padding: 0.85rem 1.15rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px dashed rgba(6, 182, 212, 0.4);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.q-solution-external-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-decoration: none;
  transition: all 0.15s ease;
  width: fit-content;
}

.q-solution-external-link:hover {
  color: var(--t-sky, #38bdf8);
  text-decoration: underline;
  transform: translateX(3px);
}

/* Chapter Complete Celebration Modal */
.chapter-complete-dialog {
  max-width: 530px;
  text-align: center;
  border-color: rgba(16, 185, 129, 0.45);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(16, 185, 129, 0.2);
}

.chapter-complete-header {
  padding: 1.5rem 1.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.celebrate-badge {
  font-size: 3.2rem;
  margin-bottom: 0.4rem;
  animation: bounceCelebrate 0.9s ease infinite alternate;
}

@keyframes bounceCelebrate {
  from { transform: scale(1); }
  to { transform: scale(1.18); }
}

.chapter-complete-title {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--text-main);
}

.chapter-complete-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  line-height: 1.4;
}

.chapter-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin: 1.25rem 1.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 0.5rem;
}

.chapter-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.chapter-stat-val {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text-main);
}

.chapter-stat-lbl {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

.chapter-complete-actions {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
  padding: 0 1.75rem 1.75rem;
}

.btn-complete-continue {
  background: linear-gradient(135deg, #0284c7, #2563eb) !important;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4) !important;
}

.resume-journey-dialog {
  max-width: 540px;
}

.stopwatch-digits {
  font-variant-numeric: tabular-nums;
}

@media (max-width: 900px) {
  .practice-bar {
    grid-template-columns: 1fr;
    justify-items: stretch;
    position: static;
  }
  .practice-bar-center,
  .practice-bar-right {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  #practiceView .modern-quiz-layout {
    flex-direction: column;
  }
  #practiceView .practice-topic-hud {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--border-color);
    max-height: 280px;
  }
  #practiceView .practice-bottom-bar {
    height: auto;
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
    gap: 0.6rem;
  }
}

/* =========================================================
   USER DATABASE & PROFILE CONTROL MODAL STYLES
   ========================================================= */

.user-control-modal-dialog {
  max-width: 840px;
  width: 95%;
}

.uc-tabs-bar {
  display: flex;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1rem;
  overflow-x: auto;
  gap: 0.5rem;
}

.uc-tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.85rem 1.1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.uc-tab-btn:hover {
  color: var(--text-main);
}

.uc-tab-btn.active {
  color: var(--accent-indigo);
  border-bottom-color: var(--accent-indigo);
}

.uc-tab-panel {
  animation: fadeIn 0.2s ease;
}

.uc-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.uc-avatar-picker {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.35rem;
}

.uc-avatar-opt {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.uc-avatar-opt:hover {
  transform: translateY(-2px);
  border-color: var(--accent-indigo);
}

.uc-avatar-opt.selected {
  border-color: var(--accent-indigo);
  background: rgba(99, 102, 241, 0.2);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.4);
}

/* Multi-User Profiles Grid */
.uc-profiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.uc-profile-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: 14px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: all 0.2s ease;
}

.uc-profile-card.active {
  border-color: var(--accent-indigo);
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.25);
  background: color-mix(in srgb, var(--accent-indigo) 10%, var(--bg-card));
}

.uc-profile-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.uc-profile-card-avatar {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.uc-profile-card-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
}

.uc-profile-card-stats {
  display: flex;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.uc-new-profile-box {
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  margin-top: 1rem;
}

/* Database Diagnostics & Backup Cards */
.uc-diagnostics-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.25rem;
}

.uc-diag-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 0.75rem;
}

.uc-diag-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
}

.uc-diag-lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.uc-diag-val {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--text-main);
  margin-top: 0.25rem;
}

.uc-backup-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.4rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Reset Box */
.uc-warning-box {
  display: flex;
  gap: 0.75rem;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  align-items: flex-start;
}

.uc-reset-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.uc-reset-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.25rem;
}

/* Diagnostics & Pacing Badges */
.ana-diag-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.ana-diag-critical {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.ana-diag-time_trap {
  background: rgba(168, 85, 247, 0.15);
  color: #a855f7;
  border: 1px solid rgba(168, 85, 247, 0.35);
}

.ana-diag-concept_gap {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.ana-diag-fluent {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.ana-diag-needs_revision {
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-muted);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.overtime-pill {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 5px;
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.optimal-pill {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 5px;
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
}

@media (max-width: 768px) {
  .uc-form-grid { grid-template-columns: 1fr; }
  .uc-diag-grid { grid-template-columns: 1fr 1fr; }
}

/* =========================================================
   MASTER-TIER DETAILED ANALYSIS & SUMMARY VIEW
   ========================================================= */

/* Hero Diagnostic Banner */
.res-hero-banner {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.9));
  border: 1px solid rgba(99, 102, 241, 0.28);
  border-radius: 20px;
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35), 0 0 35px rgba(99, 102, 241, 0.1);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

.res-hero-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.res-hero-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.res-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.35);
  color: #818cf8;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  margin-bottom: 0.5rem;
}

.res-hero-title {
  font-size: 1.85rem;
  font-weight: 900;
  color: #ffffff;
  margin: 0;
  line-height: 1.25;
}

.res-hero-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.35rem;
}

.res-hero-main-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 900px) {
  .res-hero-main-grid { grid-template-columns: 1fr; }
}

.res-score-block {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.res-big-score {
  font-size: 3.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, #818cf8 0%, #38bdf8 50%, #4ade80 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  letter-spacing: -1px;
}

.res-max-score {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-muted);
}

.res-score-pills {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.85rem;
}

.res-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 700;
}

.res-pill-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--t-green, #34d399);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.res-pill-rose {
  background: rgba(244, 63, 94, 0.15);
  color: var(--t-rose, #fb7185);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.res-pill-muted {
  background: rgba(148, 163, 184, 0.12);
  color: var(--t-slate, #94a3b8);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.res-verdict-card {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.res-verdict-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.res-verdict-title {
  font-weight: 800;
  font-size: 1.05rem;
  color: #ffffff;
}

.res-verdict-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
  line-height: 1.45;
}

/* Ratio Bar Card */
.res-ratio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
}

.res-ratio-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.res-ratio-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-main);
}

.res-ratio-track {
  height: 14px;
  border-radius: 8px;
  background: rgba(148, 163, 184, 0.15);
  display: flex;
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.res-ratio-seg-correct {
  background: linear-gradient(90deg, #10b981, #059669);
  height: 100%;
  transition: width 0.6s ease;
}

.res-ratio-seg-wrong {
  background: linear-gradient(90deg, #f43f5e, #e11d48);
  height: 100%;
  transition: width 0.6s ease;
}

.res-ratio-seg-skipped {
  background: linear-gradient(90deg, #64748b, #475569);
  height: 100%;
  transition: width 0.6s ease;
}

.res-ratio-legend {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.85rem;
  flex-wrap: wrap;
}

.res-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.res-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

/* Master KPI Grid */
.res-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.res-kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.35rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.res-kpi-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.4);
}

.res-kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.res-kpi-val {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.15;
}

.res-kpi-lbl {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.25rem;
}

.res-kpi-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Pacing & Speed Matrix (Summary Diagnostic) */
.res-pacing-matrix {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
}

.res-pacing-header {
  margin-bottom: 1.25rem;
}

.res-pacing-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0;
}

.pacing-matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .pacing-matrix-grid { grid-template-columns: 1fr; }
}

.pacing-matrix-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.2rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.pacing-matrix-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.4);
}

.pacing-matrix-card.pacing-correct {
  border-left: 4px solid #10b981;
}

.pacing-matrix-card.pacing-wrong {
  border-left: 4px solid #f43f5e;
}

.pacing-matrix-card.pacing-skipped {
  border-left: 4px solid #64748b;
}

.pacing-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.pacing-status {
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.pacing-badge {
  font-size: 0.74rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
}

.pacing-badge.badge-green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--t-green, #34d399);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.pacing-badge.badge-red {
  background: rgba(244, 63, 94, 0.15);
  color: var(--t-rose, #fb7185);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.pacing-badge.badge-amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--t-amber, #fbbf24);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.pacing-badge.badge-slate {
  background: rgba(148, 163, 184, 0.12);
  color: var(--t-slate, #94a3b8);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.pacing-val {
  font-size: 1.85rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.15;
  margin-top: 0.1rem;
}

.pacing-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Segmented Question Review Control Section */
.review-master-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  margin-top: 2rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow-card);
}

.review-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.review-section-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.review-section-title {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--text-main);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.review-section-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* Segmentation Tabs */
.review-filter-tabs {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.rev-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.15rem;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  border: 1.5px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.rev-tab-btn:hover {
  border-color: var(--accent-indigo);
  color: var(--text-main);
  transform: translateY(-1px);
}

.rev-tab-btn.active.tab-wrong {
  background: rgba(244, 63, 94, 0.14);
  border-color: #f43f5e;
  color: var(--t-rose, #fb7185);
  box-shadow: 0 4px 14px rgba(244, 63, 94, 0.25);
}

.rev-tab-btn.active.tab-correct {
  background: rgba(16, 185, 129, 0.14);
  border-color: #10b981;
  color: var(--t-green, #34d399);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.25);
}

.rev-tab-btn.active.tab-skipped {
  background: rgba(148, 163, 184, 0.15);
  border-color: #94a3b8;
  color: #e2e8f0;
  box-shadow: 0 4px 14px rgba(148, 163, 184, 0.2);
}

.rev-tab-btn.active.tab-all {
  background: rgba(99, 102, 241, 0.15);
  border-color: #6366f1;
  color: var(--t-indigo, #a5b4fc);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
}

.rev-tab-badge {
  font-size: 0.78rem;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 20px;
  background: rgba(0, 0, 0, 0.25);
}

/* Insight Banner */
.review-insight-banner {
  border-radius: 12px;
  padding: 0.85rem 1.15rem;
  margin-bottom: 1.5rem;
  font-size: 0.88rem;
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.review-insight-banner.banner-wrong {
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.25);
  color: var(--t-rose-soft, #fca5a5);
}

.review-insight-banner.banner-correct {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #86efac;
}

.review-insight-banner.banner-skipped {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid rgba(148, 163, 184, 0.2);
  color: #cbd5e1;
}

.review-insight-banner.banner-all {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: #c7d2fe;
}

/* Jump Palette */
.review-palette-wrap {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.75rem;
}

.review-palette-title {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
}

.review-palette-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.rev-p-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  border: 1.5px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.rev-p-btn:hover {
  transform: scale(1.1);
}

.rev-p-btn.p-correct {
  background: rgba(16, 185, 129, 0.18);
  border-color: #10b981;
  color: var(--t-green, #34d399);
}

.rev-p-btn.p-wrong {
  background: rgba(244, 63, 94, 0.18);
  border-color: #f43f5e;
  color: var(--t-rose, #fb7185);
}

.rev-p-btn.p-skipped {
  background: rgba(148, 163, 184, 0.14);
  border-color: #64748b;
  color: var(--t-slate, #94a3b8);
}

/* Upgraded Question Review Cards */
.review-q-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-card);
  position: relative;
  transition: border-color 0.2s ease;
}

.review-q-card.status-correct {
  border-left: 6px solid #10b981;
}

.review-q-card.status-wrong {
  border-left: 6px solid #f43f5e;
}

.review-q-card.status-unattempted {
  border-left: 6px solid #64748b;
}

.review-q-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.review-q-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.review-q-num-pill {
  font-weight: 900;
  font-size: 0.95rem;
  color: #ffffff;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.35);
  padding: 0.2rem 0.65rem;
  border-radius: 6px;
}

.review-q-topic-trail {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-muted);
}

.review-q-meta-badges {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.review-meta-chip {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.review-status-pill {
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0.25rem 0.75rem;
  border-radius: 8px;
}

.review-status-pill.pill-correct {
  background: rgba(16, 185, 129, 0.15);
  color: var(--t-green, #34d399);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.review-status-pill.pill-wrong {
  background: rgba(244, 63, 94, 0.15);
  color: var(--t-rose, #fb7185);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.review-status-pill.pill-skipped {
  background: rgba(148, 163, 184, 0.12);
  color: var(--t-slate, #94a3b8);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.review-q-content {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.review-q-answers-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.15rem 1.35rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .review-q-answers-box { grid-template-columns: 1fr; }
}

.review-ans-col-title {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.review-user-ans {
  font-size: 1.1rem;
  font-weight: 800;
}

.review-user-ans.ans-correct { color: var(--t-green, #34d399); }
.review-user-ans.ans-wrong { color: var(--t-rose, #fb7185); }
.review-user-ans.ans-skipped { color: var(--t-slate, #94a3b8); font-style: italic; }

.review-key-ans {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--t-green, #34d399);
}

.review-q-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-color);
}

.review-marks-calc {
  font-size: 0.88rem;
  font-weight: 700;
}

.review-sol-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-cyan);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  transition: all 0.2s ease;
}

.review-sol-link:hover {
  background: rgba(6, 182, 212, 0.2);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

/* =========================================================
   STARRED QUESTIONS VAULT STYLES
   ========================================================= */

.starred-modal-dialog {
  max-width: 960px !important;
  width: 94vw !important;
  max-height: 90vh !important;
  display: flex !important;
  flex-direction: column !important;
  background: var(--bg-card) !important;
  border: 1px solid rgba(245, 158, 11, 0.3) !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(245, 158, 11, 0.15) !important;
  border-radius: 20px !important;
  overflow: hidden !important;
}

.starred-count-pill {
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.18);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.35);
  display: inline-flex;
  align-items: center;
}

.starred-filter-toolbar {
  padding: 1rem 1.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  align-items: center;
}

.starred-search-wrap {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.starred-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.95rem;
  opacity: 0.6;
  pointer-events: none;
}

.starred-search-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.2s ease;
}

.starred-search-input:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.starred-filter-group {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}

.starred-select {
  padding: 0.65rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-main);
  font-size: 0.86rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.starred-select:focus {
  border-color: var(--accent-amber);
}

.starred-actions-bar {
  padding: 0.85rem 1.75rem;
  background: rgba(245, 158, 11, 0.05);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.starred-actions-left, .starred-actions-right {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  flex-wrap: wrap;
}

.starred-btn-practice {
  background: linear-gradient(135deg, #f59e0b, #d97706) !important;
  color: #ffffff !important;
  font-weight: 800 !important;
  padding: 0.55rem 1.25rem !important;
  border-radius: 9px !important;
  font-size: 0.9rem !important;
  border: none !important;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3) !important;
  cursor: pointer;
  transition: all 0.2s ease;
}

.starred-btn-practice:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.45) !important;
}

.starred-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1.75rem !important;
}

.starred-questions-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Starred Question Card */
.starred-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  transition: all 0.2s ease;
  position: relative;
}

.starred-card:hover {
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transform: translateY(-2px);
}

.starred-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.starred-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.starred-toggle-btn {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-amber);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.starred-toggle-btn:hover {
  background: rgba(245, 158, 11, 0.3);
  transform: scale(1.08);
}

.starred-q-num {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
}

.starred-telemetry-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.starred-q-path {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.starred-q-path strong {
  color: var(--accent-cyan);
}

.starred-q-content {
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--text-main);
  margin-bottom: 1rem;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.starred-key-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 800;
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.25rem 0.65rem;
  border-radius: 8px;
  margin-bottom: 0.85rem;
}

/* Personal Revision Note Box */
.starred-note-box {
  background: rgba(245, 158, 11, 0.08);
  border: 1px dashed rgba(245, 158, 11, 0.4);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.starred-note-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.starred-note-content {
  font-size: 0.9rem;
  color: var(--text-main);
  line-height: 1.5;
  white-space: pre-wrap;
}

.starred-note-edit-area {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  color: var(--text-main);
  font-size: 0.88rem;
  font-family: inherit;
  resize: vertical;
  min-height: 60px;
  outline: none;
  box-sizing: border-box;
}

.starred-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.starred-footer-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

/* Empty State */
.starred-empty-state {
  text-align: center;
  padding: 3.5rem 1.5rem;
  background: var(--bg-secondary);
  border: 2px dashed var(--border-color);
  border-radius: 16px;
}

.starred-empty-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 12px rgba(245, 158, 11, 0.3));
}

.starred-empty-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.starred-empty-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 1.5rem auto;
  line-height: 1.6;
}

/* =========================================================
   KEYBOARD SHORTCUTS CHEATSHEET MODAL STYLES
   ========================================================= */

.shortcuts-dialog {
  max-width: 820px !important;
  width: 92vw !important;
  max-height: 88vh !important;
  display: flex !important;
  flex-direction: column !important;
  background: var(--bg-card) !important;
  border: 1px solid rgba(99, 102, 241, 0.35) !important;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 30px rgba(99, 102, 241, 0.15) !important;
  border-radius: 20px !important;
  overflow: hidden !important;
}

.shortcuts-header-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(99, 102, 241, 0.2);
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.shortcuts-modal-body {
  padding: 1.25rem 1.75rem !important;
  overflow-y: auto !important;
  max-height: calc(88vh - 140px);
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.1rem;
}

.shortcuts-cat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.shortcuts-cat-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 0.4rem 0;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.shortcut-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  gap: 0.75rem;
}

.shortcut-row:last-child {
  border-bottom: none;
}

.shortcut-desc {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-muted);
}

.shortcut-keys {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

kbd, .kbd-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 0.45rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.35);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
  user-select: none;
}

/* =========================================================
   GATE CSE CORE FORMULAS & QUICK REFERENCE DRAWER STYLES
   ========================================================= */

.formula-drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.formula-drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.formula-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(880px, 94vw);
  height: 100%;
  background: var(--bg-card);
  border-left: 1px solid var(--border-color);
  box-shadow: -15px 0 50px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.formula-drawer-backdrop.active .formula-drawer-panel {
  transform: translateX(0);
}

.formula-drawer-header {
  padding: 1.15rem 1.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.formula-drawer-title-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.formula-drawer-icon {
  font-size: 1.8rem;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(6, 182, 212, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.formula-drawer-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0;
}

.formula-drawer-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0.15rem 0 0 0;
}

.formula-drawer-toolbar {
  padding: 0.85rem 1.75rem;
  background: rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.formula-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.formula-search-icon {
  position: absolute;
  left: 0.85rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  pointer-events: none;
}

.formula-search-input {
  width: 100%;
  padding: 0.55rem 2.2rem 0.55rem 2.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-main);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.formula-search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

.formula-search-clear {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  line-height: 1;
}

.formula-subject-pills {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.formula-pill {
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.formula-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

.formula-pill.active {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
}

.formula-drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.formula-subject-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  padding-bottom: 0.4rem;
  border-bottom: 2px solid rgba(6, 182, 212, 0.35);
  margin-top: 0.5rem;
}

.formula-section-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.15rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.15s ease;
}

.formula-section-card:hover {
  border-color: rgba(6, 182, 212, 0.4);
}

.formula-section-title {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.formula-section-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

.formula-items-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.formula-item-box {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 0.75rem 1rem;
}

.formula-item-label {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.formula-item-math {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 0.35rem 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 6px;
  margin-bottom: 0.35rem;
  overflow-x: auto;
}

.formula-item-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Formula Data Tables */
.formula-table-wrap {
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.formula-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  text-align: left;
}

.formula-table th {
  background: rgba(0, 0, 0, 0.3);
  color: var(--text-main);
  font-weight: 800;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.formula-table td {
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  vertical-align: middle;
}

.formula-table tr:last-child td {
  border-bottom: none;
}

.formula-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

/* =========================================================
   PRACTICE PALETTE DYNAMIC FILTER CHIPS
   ========================================================= */

.practice-pal-filter-bar {
  display: flex;
  gap: 0.3rem;
  overflow-x: auto;
  padding: 0.4rem 0.5rem;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 0.6rem;
  scrollbar-width: thin;
}

.pal-filter-pill {
  padding: 0.22rem 0.55rem;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.pal-filter-pill:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
}

.pal-filter-pill.active {
  background: var(--accent-indigo);
  color: #fff;
  border-color: var(--accent-indigo);
  box-shadow: 0 2px 6px rgba(99, 102, 241, 0.35);
}

.practice-pal-btn.pal-filtered-out {
  display: none !important;
}

/* =========================================================
   QUESTION TYPE GUIDANCE CALLOUT (NAT / MSQ / MCQ)
   ========================================================= */

.q-type-guidance-pill {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.95rem;
  border-radius: 10px;
  font-size: 0.84rem;
  font-weight: 600;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}

.guidance-nat {
  background: rgba(6, 182, 212, 0.12);
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
}

.guidance-msq {
  background: rgba(168, 85, 247, 0.12);
  border-color: rgba(168, 85, 247, 0.3);
  color: var(--accent-purple);
}

.guidance-mcq {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

/* =========================================================
   PRINT STYLESHEET (@media print) FOR REPORT SAVING
   ========================================================= */

@media print {
  /* Hide non-printable app chromes */
  #dashboardHeader,
  .practice-bar,
  .practice-bottom-bar,
  .modal-backdrop,
  .formula-drawer-backdrop,
  .scratchpad-window,
  .tcs-calc-modal,
  .res-hero-header button,
  .res-hero-main-grid > div:last-child {
    display: none !important;
  }

  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 11pt !important;
  }

  #resultView {
    display: block !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .res-hero-banner,
  .res-ratio-card,
  .res-kpi-grid,
  .res-pacing-matrix,
  .marks-dist-box,
  .review-master-section {
    background: #ffffff !important;
    border: 1px solid #cccccc !important;
    color: #000000 !important;
    box-shadow: none !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .res-big-score,
  .res-hero-title,
  .res-kpi-val,
  .res-verdict-title {
    color: #000000 !important;
  }

  .rev-card {
    background: #ffffff !important;
    border: 1px solid #dddddd !important;
    color: #000000 !important;
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: 1.5rem !important;
  }

  .rev-expl-box {
    background: #f8fafc !important;
    border: 1px solid #cbd5e1 !important;
    color: #0f172a !important;
  }
}




/* =========================================================
   UI v3: shared tree component, compact practice header,
   dropdown palette filter, quieter footer
   ========================================================= */

/* ---------- Shared tree ---------- */
.tr { font-size: 0.86rem; }
.tr-node { position: relative; }
.tr-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 34px;
  padding: 0 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-main);
  transition: background 0.12s ease;
}
.tr-row:hover { background: rgba(99, 102, 241, 0.09); }
.tr-row.active { background: rgba(6, 182, 212, 0.12); box-shadow: inset 3px 0 0 var(--accent-cyan); }
.tr-row.active .tr-label { color: var(--accent-cyan); font-weight: 700; }

.tr-chev { flex: none; width: 14px; height: 14px; position: relative; color: var(--text-dim); }
.tr-chev::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.15s ease;
}
.tr-chev.none::before { display: none; }
.tr-node.open > .tr-row .tr-chev::before { transform: rotate(45deg); top: 2px; }

.tr-label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tr-meta { flex: none; min-width: 34px; text-align: right; font-size: 0.74rem; font-weight: 600; color: var(--text-muted); font-variant-numeric: tabular-nums; }

/* children collapse with a smooth height transition */
.tr-children {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.2s ease;
  margin-left: 14px;
  border-left: 1px solid var(--border-color);
}
.tr-children > div { overflow: hidden; padding-left: 4px; min-height: 0; }
.tr-node.open > .tr-children { grid-template-rows: 1fr; }

/* weight decreases with depth */
.tr-parent .tr-label, .tr-subject .tr-label { font-weight: 700; }
.tr-chapter .tr-label { font-weight: 600; }
.tr-topic .tr-label, .tr-leaf .tr-label { font-weight: 500; color: var(--text-muted); }
.tr-row.active.tr-leaf .tr-label { color: var(--accent-cyan); }

/* practice: tiny progress line under a chapter + leaf dots */
.tr-mini { position: absolute; left: 8px; right: 8px; bottom: 2px; height: 2px; background: rgba(148, 163, 184, 0.15); border-radius: 2px; overflow: hidden; }
.tr-mini i { display: block; height: 100%; background: var(--accent-emerald); }
.tr-dot { flex: none; width: 7px; height: 7px; border-radius: 50%; border: 1.5px solid var(--text-dim); margin-left: 3px; }
.tr-dot.part { border-color: var(--accent-amber); background: rgba(245, 158, 11, 0.4); }
.tr-dot.done { border-color: var(--accent-emerald); background: var(--accent-emerald); }

.tree-search {
  margin: 0.5rem 0.65rem 0.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  padding: 0.4rem 0.7rem;
  font-size: 0.82rem;
}
.tree-search:focus { outline: none; border-color: var(--accent-cyan); }
.tree-empty { padding: 0.75rem; color: var(--text-muted); font-size: 0.8rem; }
#practiceView .practice-subject-tree { gap: 0; padding: 0.35rem 0.5rem 0.75rem; }

/* ---------- Analytics tree specifics ---------- */
.tr-metrics { min-height: 38px; }
.tr-metrics .tr-label { flex: 1 1 0; }
.tr-acc { flex: none; width: 130px; }
.tr-acc .ana-bar { min-width: 0; }
.tr-action { flex: none; width: 84px; text-align: right; }
.tr-status { flex: none; width: 9px; height: 9px; border-radius: 50%; background: var(--text-dim); }
.ana-dot-weak { background: var(--accent-rose); }
.ana-dot-needs_revision { background: var(--accent-amber); }
.ana-dot-strong { background: var(--accent-emerald); }
.ana-dot-low_data { background: var(--accent-indigo); }
.ana-dot-untested { background: rgba(148, 163, 184, 0.45); }
.tr-subject { min-height: 42px; }
.tr-subject .tr-label { font-size: 0.95rem; }
.tr-metrics .tr-action .ana-link-btn { visibility: hidden; }
.tr-metrics:hover .tr-action .ana-link-btn { visibility: visible; }

.tr-head { display: grid; grid-template-columns: 1fr 130px 34px 84px; gap: 0.5rem; padding: 0 0.5rem 0.4rem 3.3rem; color: var(--text-dim); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--border-color); margin-bottom: 0.4rem; }
.tr-head span:nth-child(3) { text-align: right; }

.tree-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.9rem; }
.tree-toolbar-left { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.tree-check { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.84rem; color: var(--text-muted); cursor: pointer; margin-left: 0.5rem; }
.tree-legend { display: flex; gap: 0.9rem; flex-wrap: wrap; font-size: 0.76rem; color: var(--text-muted); }
.tree-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 0.3rem; }

@media (max-width: 1000px) {
  .tr-acc { width: 90px; }
  .tr-head { grid-template-columns: 1fr 90px 34px 84px; }
}

/* ---------- Practice: compact question header ---------- */
#practiceView .q-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: nowrap;
  padding: 0.7rem 1.75rem;
  margin: 0;
}
#practiceView .q-meta-main { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; min-width: 0; }
#practiceView .q-title-text { font-size: 1rem; white-space: nowrap; }
#practiceView .q-badge-group { display: flex; gap: 0.35rem; }
#practiceView .q-badge { font-size: 0.72rem; padding: 0.15rem 0.5rem; }
#practiceView .q-meta-tools { display: flex; gap: 0.35rem; flex: none; }
#practiceView .q-action-icon-btn { padding: 0; width: 34px; height: 34px; justify-content: center; font-size: 1rem; background: transparent; }
#practiceView .q-ico-label { display: none; }
#practiceView .q-bench-pill {
  background: transparent;
  border: none;
  padding: 0;
  font-size: 0.74rem;
  color: var(--text-dim);
}

/* ---------- Practice: side panel ---------- */
.pal-filter-select {
  margin: 0.5rem 0.75rem 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  cursor: pointer;
}
#practiceView .hud-mini-stats {
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
  padding: 0.5rem 0.75rem;
  margin: 0;
  border-top: 1px solid var(--border-color);
}
#practiceView .hud-stat-box {
  flex-direction: row;
  align-items: baseline;
  gap: 0.3rem;
  padding: 0;
  background: none;
  border: none;
}
#practiceView .hud-stat-num { font-size: 0.9rem; }
#practiceView .hud-stat-lbl { font-size: 0.68rem; text-transform: none; letter-spacing: 0; }
#practiceView .practice-pal-legend { gap: 0.2rem 0.7rem; font-size: 0.68rem; padding: 0.4rem 0.75rem; }

/* ---------- Practice: footer ---------- */
#practiceView #btnPracticeClear {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}
#practiceView #btnPracticeClear:hover:not(:disabled) { color: var(--accent-rose); background: rgba(244, 63, 94, 0.08); }
#practiceView #btnPracticeSkip { background: transparent; }

/* ---------- Timed CBT: tighter chrome ---------- */
.tcs-interface .tcs-sidebar { padding-top: 0.5rem; }

/* ---- Dashboard v3 ---- */
.master-modes-grid { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; gap: 1.1rem !important; }
@media (max-width: 1100px) { .master-modes-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; } }
@media (max-width: 700px) { .master-modes-grid { grid-template-columns: minmax(0, 1fr) !important; } }
.master-mode-card .mode-desc { font-size: 0.86rem; line-height: 1.5; }
.master-mode-card .mode-card-body { padding-bottom: 0.5rem; }
.subject-fast-bar { height: 3px; background: rgba(148, 163, 184, 0.18); border-radius: 3px; overflow: hidden; margin-top: 0.6rem; }
.subject-fast-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald)); }
.subject-fast-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)) !important; }

/* navbar tidy */
.app-navbar .btn-analytics-nav, .app-navbar .btn-theme-toggle { white-space: nowrap; padding: 0.4rem 0.75rem; font-size: 0.82rem; }
.app-navbar .brand-badge { white-space: nowrap; }
@media (max-width: 1500px) { .app-navbar .brand-badge { display: none; } }

/* ---- v3.1: NAT label, rule chip ---- */
#practiceView .tcs-nat-box > div:first-child { color: var(--text-muted) !important; font-size: 0.85rem !important; }
#practiceView .tcs-nat-box .tcs-nat-display {
  background: var(--bg-primary);
  color: var(--text-main) !important;
  border: 1px solid var(--border-color);
  border-radius: 10px;
}
#practiceView .q-badge-rule { color: var(--text-muted); background: transparent; border-style: dashed; }

/* =========================================================
   IPAD 9TH GEN (810px × 1080px) & TABLET INTERACTIVE UI SYSTEM
   Designed specifically for iPadOS Safari, touch gestures,
   and both portrait (810px) and landscape (1080px) orientations.
   ========================================================= */

/* Global Touch & iPad Polish */
@media (hover: none) and (pointer: coarse), (max-width: 1100px) {
  /* Eliminate iOS Safari 300ms tap delay and tap grey rectangles */
  button, a, input, select, textarea,
  .subject-fast-card, .tcs-mcq-item, .tcs-msq-item,
  .tcs-p-btn, .pal-btn, .practice-opt-item, .mode-tile, .ana-tab-btn {
    -webkit-tap-highlight-color: transparent !important;
    touch-action: manipulation;
  }

  /* Prevent iOS Safari auto-zoom-on-focus */
  input, select, textarea {
    font-size: 16px !important;
  }

  /* Momentum smooth scrolling on iPadOS WebKit */
  .tcs-question-panel,
  .tcs-palette-grid-box,
  #practiceSingleQuestionContainer .q-scroll-area,
  .practice-topic-hud,
  .ana-table-wrap,
  .dashboard-container,
  .modern-scroll,
  .q-drawer {
    -webkit-overflow-scrolling: touch !important;
  }
}

/* iPad Safe Area Insets & Dynamic Viewport Height (100dvh) */
@media (max-width: 1150px) {
  body.practice-active #practiceView.dashboard-container,
  #practiceView.practice-interface-screen,
  #practiceView {
    height: 100vh !important;
    height: 100dvh !important;
    max-height: 100dvh !important;
  }

  .tcs-interface {
    height: 100vh !important;
    height: 100dvh !important;
    max-height: 100dvh !important;
  }

  /* Safe area padding for iPad home indicator bar & top status bar */
  .practice-bottom-bar,
  .tcs-bottom-bar {
    padding-bottom: max(0.6rem, env(safe-area-inset-bottom)) !important;
  }

  .app-navbar {
    padding-top: max(0.75rem, env(safe-area-inset-top)) !important;
    padding-left: max(1.25rem, env(safe-area-inset-left)) !important;
    padding-right: max(1.25rem, env(safe-area-inset-right)) !important;
  }

  /* iPad Calculator Sizing & Boundaries */
  .tcs-calc-modal {
    max-width: min(480px, calc(100vw - 24px)) !important;
    max-height: calc(100dvh - 30px) !important;
    touch-action: none;
  }

  #helptopDiv {
    touch-action: none !important;
    user-select: none;
    -webkit-user-select: none;
  }

  .tcs-calc-btn-header {
    min-height: 38px;
    padding: 0.35rem 0.75rem;
    font-size: 0.88rem;
  }
}

/* iPad 9th Gen Portrait & Tablet Portrait (< 920px) Responsive Architecture */
@media (max-width: 920px) {
  /* 1. TCS CBT Interface: Transform sidebar into an interactive slide-over drawer */
  .tcs-palette-toggle-btn {
    display: inline-flex !important;
    align-items: center;
    gap: 0.35rem;
  }

  .tcs-main-body {
    position: relative;
    overflow: hidden;
    width: 100%;
  }

  .tcs-question-panel {
    width: 100% !important;
    flex: 1 1 100% !important;
    border-right: none !important;
    padding: 1rem 1.25rem 4.5rem 1.25rem !important;
  }

  .tcs-sidebar {
    position: absolute !important;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw) !important;
    height: 100% !important;
    z-index: 1050 !important;
    transform: translateX(100%);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -8px 0 28px rgba(0, 0, 0, 0.3);
    border-left: 1px solid #cbd5e1 !important;
    background: #ffffff !important;
  }

  .tcs-sidebar.drawer-open {
    transform: translateX(0) !important;
  }

  .tcs-sidebar-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1040;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }

  .tcs-sidebar-backdrop.hidden {
    display: none;
  }

  .tcs-bottom-bar {
    height: auto !important;
    min-height: 56px;
    padding: 0.6rem 1rem max(0.6rem, env(safe-area-inset-bottom)) 1rem !important;
    gap: 0.6rem;
    overflow-x: auto;
  }

  .tcs-btn-action {
    padding: 0.6rem 0.95rem !important;
    font-size: 0.88rem !important;
    min-height: 42px;
  }

  /* 2. Practice Mode: Transform Topic HUD into an interactive slide-over drawer */
  .btn-hud-toggle {
    display: inline-flex !important;
  }

  #practiceView .modern-quiz-layout {
    position: relative !important;
    overflow: hidden !important;
    flex-direction: row !important;
    width: 100% !important;
  }

  #practiceView .modern-q-card {
    width: 100% !important;
    flex: 1 1 100% !important;
    border-right: none !important;
  }

  #practiceView .practice-topic-hud {
    position: absolute !important;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw) !important;
    height: 100% !important;
    z-index: 50 !important;
    transform: translateX(100%);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -8px 0 28px rgba(0, 0, 0, 0.45);
    border-left: 1px solid var(--border-color) !important;
    max-height: none !important;
    background: var(--bg-card) !important;
  }

  #practiceView .practice-topic-hud.hud-open {
    transform: translateX(0) !important;
  }

  .practice-hud-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 45;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }

  .practice-hud-backdrop.hidden {
    display: none;
  }

  .practice-bar {
    padding: 0 0.85rem !important;
    height: 52px !important;
    min-height: 52px !important;
  }

  .practice-breadcrumbs {
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .practice-bottom-bar {
    height: auto !important;
    min-height: 58px;
    padding: 0.6rem 0.85rem max(0.6rem, env(safe-area-inset-bottom)) 0.85rem !important;
    gap: 0.5rem;
  }

  .practice-bottom-bar .btn-action {
    min-height: 44px;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }

  /* 3. Touch Friendly NAT Keypad for iPad */
  .tcs-nat-display {
    width: 100% !important;
    max-width: 280px !important;
    height: 44px !important;
    font-size: 1.25rem !important;
  }

  .tcs-nat-keypad {
    width: 100% !important;
    max-width: 280px !important;
    padding: 8px !important;
  }

  .tcs-nat-btn {
    height: 44px !important;
    font-size: 1.15rem !important;
  }

  .tcs-nat-btn-wide {
    height: 42px !important;
    font-size: 0.95rem !important;
  }

  /* 4. Touch Choices Sizing */
  .tcs-mcq-item, .tcs-msq-item {
    min-height: 48px;
    padding: 0.85rem 1rem;
    font-size: 1.05rem;
  }

  .tcs-p-btn {
    height: 42px !important;
    font-size: 0.95rem !important;
  }

  /* 5. Dashboard Hero & Grid on iPad Portrait */
  .master-hero-section {
    padding: 2rem 1.5rem !important;
  }

  .hero-cta-group {
    flex-wrap: wrap;
    gap: 0.65rem;
  }

  .hero-btn-primary, .hero-btn-secondary {
    min-height: 44px;
    padding: 0.75rem 1.25rem;
  }

  .subject-fast-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 0.85rem;
  }
}

/* iPad 9th Gen Landscape Specific Polish (811px to 1080px) */
@media (min-width: 921px) and (max-width: 1100px) {
  .tcs-sidebar {
    width: 280px !important;
  }

  #practiceView .practice-topic-hud {
    width: 280px !important;
  }

  .tcs-palette-grid {
    grid-template-columns: repeat(4, 1fr) !important;
  }
}


/* =========================================================
   PRACTICE v4: modern light theme, one-row legend,
   Chapters & topics popover, footer with Star + Submit by Next
   (everything scoped to the practice screen)
   ========================================================= */

body.practice-active #practiceView {
  --bg-primary: #f6f8fc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f5f7ff;
  --border-color: #e5e9f2;
  --border-accent: rgba(79, 70, 229, 0.30);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --accent-indigo: #4f46e5;
  --accent-cyan: #0284c7;
  --accent-emerald: #16a34a;
  --accent-purple: #7c3aed;
  --accent-rose: #e11d48;
  --accent-amber: #d97706;
  --pv-shadow: 0 1px 2px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.06);
  background: #f6f8fc !important;
  color: var(--text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* ---- top bar ---- */
#practiceView .practice-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}
#practiceView .practice-bar .breadcrumb-subj { color: var(--accent-indigo); }
#practiceView .practice-bar .breadcrumb-sep { color: var(--text-dim); }
#practiceView .practice-bar .practice-stopwatch-pill,
#practiceView .practice-stopwatch-pill {
  background: #eef2ff; border: 1px solid #c7d2fe; color: #4338ca; box-shadow: none;
}
#practiceView .practice-bar .practice-stopwatch-pill.timer-warning { background: #fff1f2; border-color: #fda4af; color: #be123c; }
#practiceView .practice-progress-pill { background: #f0fdf4; border: 1px solid #bbf7d0; color: #15803d; }
#practiceView .btn-bar {
  background: #ffffff; border: 1px solid var(--border-color); color: #334155; font-weight: 600;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}
#practiceView .btn-bar:hover { background: #f5f7ff; border-color: #a5b4fc; color: #4338ca; }
#practiceView .btn-bar-end { color: #be123c; background: #fff1f2; border-color: #fecdd3; font-weight: 700; }
#practiceView .btn-bar-end:hover { background: #e11d48; color: #ffffff; border-color: #e11d48; }
#practiceView .practice-progress-line { background: #e5e9f2; }

/* ---- question card ---- */
#practiceView .modern-q-card { background: #ffffff; border-right: 1px solid var(--border-color); }
#practiceView .q-meta-bar { background: #ffffff; border-bottom: 1px solid var(--border-color); }
#practiceView .q-title-text { color: #4338ca; }
#practiceView .q-badge { border-radius: 999px; font-weight: 600; font-size: 0.74rem; padding: 0.2rem 0.6rem; }
#practiceView .q-badge-rule { background: #f1f5f9 !important; color: #475569 !important; border: 1px dashed #cbd5e1 !important; }
#practiceView .q-bench-pill { background: #f8fafc; border: 1px solid var(--border-color); color: var(--text-muted); }
#practiceView .q-body-content { color: #0f172a; }
#practiceView .q-body-content table, #practiceView .q-body-content td, #practiceView .q-body-content th { border-color: #cbd5e1; }
#practiceView .q-scroll-area { background: #ffffff; }

/* ---- options ---- */
#practiceView .modern-opt-card {
  background: #ffffff; border: 1.5px solid #e2e8f0; border-radius: 12px; color: #0f172a;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}
#practiceView .modern-opt-card:hover:not(.selected) { background: #f5f7ff; border-color: #a5b4fc; transform: none; }
#practiceView .modern-opt-card.selected { background: #eef2ff; border-color: #4f46e5; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.10); }
#practiceView .opt-badge { background: #f1f5f9; color: #334155; border-radius: 999px; }
#practiceView .modern-opt-card.selected .opt-badge { background: #4f46e5; color: #ffffff; }
#practiceView .modern-opt-card.correct-highlight { background: #f0fdf4 !important; border-color: #22c55e !important; box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.12) !important; }
#practiceView .modern-opt-card.wrong-highlight { background: #fff1f2 !important; border-color: #f43f5e !important; box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.10) !important; }
#practiceView .modern-opt-card.revealed-correct { background: #f0fdf4 !important; border: 2px dashed #22c55e !important; }
#practiceView .opt-feedback-correct { background: #dcfce7; color: #15803d; border-color: #86efac; }
#practiceView .opt-feedback-wrong { background: #ffe4e6; color: #be123c; border-color: #fda4af; }
#practiceView .opt-feedback-key { background: #e0f2fe; color: #0369a1; border-color: #7dd3fc; }
#practiceView .modern-ans-box { background: #f0fdf4; border: 1px solid #86efac; color: #15803d; }

/* ---- side panel ---- */
#practiceView .practice-topic-hud { background: #f8fafc; border-left: 1px solid var(--border-color); }
#practiceView .practice-palette-header { background: #f8fafc; border-bottom: 1px solid var(--border-color); }
#practiceView .practice-pal-title { color: #64748b; }
#practiceView .practice-pal-count { color: #4f46e5; }
#practiceView .pal-filter-select { background: #ffffff; border: 1px solid #d5dbe8; color: #0f172a; border-radius: 10px; }
#practiceView .practice-pal-legend {
  background: transparent; border: none;
  display: flex; flex-wrap: nowrap; justify-content: space-between; gap: 0.35rem;
  padding: 0.5rem 0.85rem; font-size: 0.66rem; white-space: nowrap; color: #475569;
}
#practiceView .pal-legend-item { gap: 0.28rem; }
#practiceView .pal-legend-dot { width: 8px; height: 8px; }

#practiceView .practice-pal-grid { background: transparent; }
#practiceView .practice-pal-btn {
  background: #ffffff; border: 1px solid #dde3ee; color: #334155; border-radius: 8px; font-weight: 700;
  box-shadow: 0 1px 1px rgba(15, 23, 42, 0.03); transform: none;
}
#practiceView .practice-pal-btn:hover { border-color: #818cf8; color: #4338ca; background: #f5f7ff; }
#practiceView .practice-pal-btn.pal-visited { background: #f1f5f9 !important; border-color: #cbd5e1 !important; color: #334155 !important; }
#practiceView .practice-pal-btn.pal-correct { background: #dcfce7 !important; border-color: #4ade80 !important; color: #15803d !important; }
#practiceView .practice-pal-btn.pal-wrong { background: #ffe4e6 !important; border-color: #fb7185 !important; color: #be123c !important; }
#practiceView .practice-pal-btn.pal-skipped { background: #fef3c7 !important; border-color: #fbbf24 !important; color: #b45309 !important; }
#practiceView .practice-pal-btn.pal-exam-answered { background: #dcfce7 !important; border-color: #4ade80 !important; color: #15803d !important; }
#practiceView .practice-pal-btn.pal-exam-marked { background: #f3e8ff !important; border-color: #c084fc !important; color: #7e22ce !important; }
#practiceView .practice-pal-btn.pal-exam-ans-marked { background: #dcfce7 !important; border: 2px solid #a855f7 !important; color: #15803d !important; }
#practiceView .practice-pal-btn.pal-exam-visited { background: #ffedd5 !important; border-color: #fb923c !important; color: #c2410c !important; }
#practiceView .practice-pal-btn.pal-exam-notvisited { background: #ffffff !important; border-color: #dde3ee !important; color: #475569 !important; }
#practiceView .practice-pal-btn.active {
  border: 2px solid #4f46e5 !important; background: #eef2ff !important; color: #3730a3 !important;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.18) !important; outline: none;
}

#practiceView .hud-mini-stats { background: #ffffff; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
#practiceView .hud-stat-lbl { color: #64748b; }

/* ---- Chapters & topics popover ---- */
#practiceView .practice-tree-container { flex: none; overflow: visible; background: transparent; border-top: none; }
#practiceView .practice-tree-header { background: transparent; border: none; padding: 0.85rem 1rem 0.35rem; }
#practiceView .practice-tree-title { color: #64748b; }
#practiceView .practice-tree-count { color: #4f46e5; font-weight: 700; }
#practiceView .practice-subject-tree { overflow: visible; padding: 0.25rem 0.85rem 1rem; display: block; }

.ct-wrap { position: relative; }
.ct-trigger {
  width: 100%; display: flex; align-items: center; gap: 0.6rem; text-align: left;
  background: #ffffff; border: 1.5px solid #dde3ee; border-radius: 12px;
  padding: 0.65rem 0.8rem; cursor: pointer; font-family: inherit; color: #0f172a;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.ct-trigger:hover { border-color: #a5b4fc; }
.ct-wrap.open .ct-trigger { border-color: #4f46e5; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12); }
.ct-trig-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.ct-trig-chap { font-size: 0.82rem; font-weight: 700; color: #0f172a; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ct-trig-topic { font-size: 0.72rem; font-weight: 500; color: #64748b; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ct-chev { flex: none; width: 8px; height: 8px; border-right: 2px solid #64748b; border-bottom: 2px solid #64748b; transform: rotate(45deg) translateY(-2px); transition: transform 0.2s ease; }
.ct-wrap.open .ct-chev { transform: rotate(-135deg) translateY(-2px); }

.ct-progress-track { height: 4px; margin: 0.45rem 0.2rem 0; background: #e5e9f2; border-radius: 99px; overflow: hidden; }
.ct-progress-track i { display: block; height: 100%; background: linear-gradient(90deg, #6366f1, #22c55e); border-radius: 99px; transition: width 0.3s ease; }

.ct-pop {
  margin-top: 0.55rem; background: #ffffff; border: 1px solid #dde3ee; border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.10); overflow: hidden; animation: ctIn 0.16s ease;
}
.ct-pop.hidden { display: none; }
@keyframes ctIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.ct-pop-head {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  padding: 0.55rem 0.85rem; background: #f8fafc; border-bottom: 1px solid #e5e9f2;
  font-size: 0.68rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: #64748b;
}
.ct-back-head { justify-content: flex-start; text-transform: none; letter-spacing: 0; }
.ct-back {
  flex: none; border: none; background: #eef2ff; color: #4338ca; font: inherit; font-size: 0.72rem; font-weight: 700;
  padding: 0.25rem 0.6rem; border-radius: 999px; cursor: pointer;
}
.ct-back:hover { background: #e0e7ff; }
.ct-pop-title { flex: 1; min-width: 0; font-size: 0.78rem; font-weight: 700; color: #0f172a; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ct-list { max-height: min(46vh, 340px); overflow-y: auto; padding: 0.3rem; }
.ct-item {
  width: 100%; display: flex; align-items: center; gap: 0.55rem; text-align: left;
  background: transparent; border: none; border-radius: 9px; padding: 0.55rem 0.6rem;
  font: inherit; color: #0f172a; cursor: pointer; transition: background 0.12s ease;
}
.ct-item:hover { background: #f5f7ff; }
.ct-item.active { background: #eef2ff; }
.ct-item.active .ct-item-name { color: #3730a3; font-weight: 700; }
.ct-item-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.ct-item-name { font-size: 0.8rem; font-weight: 600; line-height: 1.25; color: #1e293b; }
.ct-topic .ct-item-name { font-weight: 500; }
.ct-item-all .ct-item-name { color: #4338ca; font-weight: 700; }
.ct-item-bar { display: block; height: 3px; background: #e5e9f2; border-radius: 99px; overflow: hidden; }
.ct-item-bar i { display: block; height: 100%; background: #22c55e; border-radius: 99px; }
.ct-item-meta { flex: none; font-size: 0.72rem; font-weight: 700; color: #64748b; font-variant-numeric: tabular-nums; }
.ct-item-meta.done { color: #16a34a; }
.ct-item-go { flex: none; color: var(--t-slate, #94a3b8); font-size: 1.1rem; line-height: 1; }
.ct-dot { flex: none; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid #cbd5e1; background: #ffffff; }
.ct-dot.part { border-color: #f59e0b; background: #fde68a; }
.ct-dot.done { border-color: #22c55e; background: #22c55e; }

/* ---- footer ---- */
#practiceView .modern-quiz-actions {
  background: #ffffff; border-top: 1px solid var(--border-color); box-shadow: 0 -2px 12px rgba(15, 23, 42, 0.05);
}
#practiceView .practice-btn-right-group { gap: 0.5rem; }
#practiceView .btn-action-star {
  background: #fffbeb; color: #b45309; border: 1px solid #fde68a; font-size: 0.84rem; font-weight: 700;
  height: 38px; padding: 0 0.95rem; border-radius: 10px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.4rem; white-space: nowrap;
}
#practiceView .btn-action-star:hover { background: #fef3c7; }
#practiceView .btn-action-star.active { background: #f59e0b; border-color: #d97706; color: #ffffff; }
#practiceView .btn-action-star .star-ico { font-size: 1rem; line-height: 1; }
#practiceView .btn-action-secondary, #practiceView #btnPracticeSkip, #practiceView #btnPracticeClear,
#practiceView .btn-action-nav, #practiceView #btnPracticePrev {
  background: #ffffff; color: #334155; border: 1px solid #dde3ee; border-radius: 10px;
}
#practiceView #btnPracticeSkip:hover, #practiceView #btnPracticePrev:hover:not(:disabled) { background: #f5f7ff; border-color: #a5b4fc; }
#practiceView #btnPracticeClear { background: transparent; border-color: transparent; color: #64748b; }
#practiceView #btnPracticeClear:hover:not(:disabled) { color: #e11d48; background: #fff1f2; border-color: transparent; }
#practiceView .btn-action-submit, #practiceView #btnPracticeSubmit {
  background: #16a34a; border: 1px solid #15803d; color: #ffffff; border-radius: 10px; box-shadow: 0 2px 8px rgba(22, 163, 74, 0.25);
}
#practiceView .btn-action-submit:hover, #practiceView #btnPracticeSubmit:hover { background: #15803d; }
#practiceView #btnPracticeNext, #practiceView .btn-action-next {
  background: #4f46e5; border: 1px solid #4338ca; color: #ffffff; border-radius: 10px; box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}
#practiceView #btnPracticeNext:hover { background: #4338ca; }

@media (max-width: 720px) {
  #practiceView .modern-quiz-actions { height: auto; min-height: 58px; flex-wrap: wrap; padding: 0.5rem 0.75rem; gap: 0.5rem; }
  #practiceView .practice-btn-left-group, #practiceView .practice-btn-right-group { flex-wrap: wrap; }
}

/* ---- Solution URL & Discussion Link Styling ---- */
.btn-view-solution-url {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: #f0fdf4 !important;
  border: 1.5px solid #86efac !important;
  color: #15803d !important;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.btn-view-solution-url:hover {
  background: #dcfce7 !important;
  border-color: #22c55e !important;
  color: #166534 !important;
  transform: translateY(-1px);
}

.solution-url-banner {
  margin-top: 0.85rem;
  padding: 0.85rem 1.15rem;
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  border-radius: 12px;
  display: block;
}
.solution-banner-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  width: 100%;
}
.solution-banner-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.solution-banner-icon {
  font-size: 1.35rem;
  line-height: 1;
}
.solution-banner-title {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #166534;
}
.solution-banner-subtitle {
  font-size: 0.84rem;
  font-weight: 600;
  color: #0f172a;
}
.q-solution-external-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: #0284c7;
  color: #ffffff !important;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.15s ease;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25);
  white-space: nowrap;
}
.q-solution-external-link:hover {
  background: #0369a1;
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
  text-decoration: none;
}
.q-solution-external-link .sol-arrow {
  font-size: 0.95rem;
  line-height: 1;
}

#practiceView .btn-action-solution {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  font-size: 0.84rem;
  font-weight: 700;
  height: 38px;
  padding: 0 0.95rem;
  border-radius: 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  transition: all 0.15s ease;
}
#practiceView .btn-action-solution:hover {
  background: #dcfce7;
  border-color: #86efac;
}


/* PRACTICE v4.2: palette via variables (swap these to re-theme the practice screen) */
body.practice-active #practiceView {
  --pv-bar-a: #0f766e;      /* top bar gradient start (teal) */
  --pv-bar-b: #0369a1;      /* top bar gradient end (ocean blue) */
  --pv-bar-glow: rgba(3, 105, 161, 0.30);
  --pv-bg: #eaf6f6;         /* page background */
  --pv-card: #f4fbfb;       /* question area */
  --pv-panel: #e2f1f2;      /* side panel */
  --pv-panel-head: #d6eaec; /* side panel header */
  --pv-line: #cfe3e6;
  --pv-foot: #f7fcfc;
  --accent-indigo: #0f766e;
  --border-accent: rgba(15, 118, 110, 0.35);
  background: var(--pv-bg) !important;
}
#practiceView .modern-q-card, #practiceView .q-scroll-area, #practiceView .q-meta-bar { background: var(--pv-card); }
#practiceView .q-meta-bar { border-bottom: 1px solid var(--pv-line); }
#practiceView .modern-q-card { border-right: 1px solid var(--pv-line); }
#practiceView .practice-topic-hud { background: var(--pv-panel); border-left: 1px solid var(--pv-line); }
#practiceView .practice-palette-header { background: var(--pv-panel-head); border-bottom: 1px solid var(--pv-line); }
#practiceView .hud-mini-stats { background: var(--pv-card); border-color: var(--pv-line); }
#practiceView .modern-quiz-actions { background: var(--pv-foot); border-top: 1px solid var(--pv-line); }
#practiceView .q-title-text { color: #0f766e; }
#practiceView .practice-pal-count, #practiceView .practice-tree-count { color: #0f766e; }

/* Top bar */
#practiceView .practice-bar {
  background: linear-gradient(100deg, var(--pv-bar-a), var(--pv-bar-b));
  border-bottom: none;
  box-shadow: 0 4px 18px var(--pv-bar-glow);
}
#practiceView .practice-bar .breadcrumb-subj, #practiceView .practice-bar .breadcrumb-topic { color: #ffffff; }
#practiceView .practice-bar .breadcrumb-chap { color: rgba(255, 255, 255, 0.8); }
#practiceView .practice-bar .breadcrumb-sep { color: rgba(255, 255, 255, 0.5); }
#practiceView .practice-bar .practice-stopwatch-pill, #practiceView .practice-progress-pill {
  background: rgba(255, 255, 255, 0.16); border: 1px solid rgba(255, 255, 255, 0.32); color: #ffffff;
}
#practiceView .practice-bar .practice-stopwatch-pill.timer-warning { background: #fff1f2; border-color: #fda4af; color: #be123c; }
#practiceView .practice-bar .btn-bar { background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.3); color: #ffffff; box-shadow: none; }
#practiceView .practice-bar .btn-bar:hover { background: rgba(255, 255, 255, 0.26); border-color: rgba(255, 255, 255, 0.55); color: #ffffff; }
#practiceView .practice-bar .btn-bar-end { background: #ffffff; color: #be123c; border-color: #ffffff; font-weight: 800; }
#practiceView .practice-bar .btn-bar-end:hover { background: #fff1f2; color: #9f1239; }
#practiceView .practice-progress-line { background: rgba(255, 255, 255, 0.22); }
#practiceView .practice-progress-line i { background: linear-gradient(90deg, #fde047, #86efac); }

/* Teal accents for selection / primary actions */
#practiceView .modern-opt-card.selected { background: #e6f7f5; border-color: #0f766e; box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12); }
#practiceView .modern-opt-card.selected .opt-badge { background: #0f766e; }
#practiceView .modern-opt-card:hover:not(.selected) { background: #f0fafa; border-color: #5eead4; }
#practiceView #btnPracticeNext, #practiceView .btn-action-next { background: #0f766e; border-color: #115e59; box-shadow: 0 2px 8px rgba(15, 118, 110, 0.28); }
#practiceView #btnPracticeNext:hover { background: #115e59; }
#practiceView .practice-pal-btn.active { border-color: #0f766e !important; background: #e6f7f5 !important; color: #115e59 !important; box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.18) !important; }
#practiceView .ct-wrap.open .ct-trigger { border-color: #0f766e; box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.14); }
#practiceView .ct-item.active { background: #e6f7f5; }
#practiceView .ct-item.active .ct-item-name, #practiceView .ct-item-all .ct-item-name { color: #115e59; }
#practiceView .ct-back { background: #e0f2f1; color: #115e59; }
#practiceView .ct-progress-track i { background: linear-gradient(90deg, #14b8a6, #22c55e); }

/* PRACTICE v4.3: solid colours, every button clearly visible */
body.practice-active #practiceView { --pv-bar-a: #0f766e; --pv-bar-b: #0f766e; }
#practiceView .practice-bar { background: #0f766e; box-shadow: 0 3px 10px rgba(15, 23, 42, 0.25); }
#practiceView .practice-bar .practice-stopwatch-pill,
#practiceView .practice-progress-pill { background: #134e4a; border: 1px solid #134e4a; color: #ffffff; }
#practiceView .practice-bar .btn-bar { background: #ffffff; border: 1px solid #ffffff; color: #0f4f4a; font-weight: 700; }
#practiceView .practice-bar .btn-bar:hover { background: #ccfbf1; border-color: #ccfbf1; color: #0f4f4a; }
#practiceView .practice-bar .btn-bar-end { background: #dc2626; border-color: #dc2626; color: #ffffff; }
#practiceView .practice-bar .btn-bar-end:hover { background: #b91c1c; border-color: #b91c1c; color: #ffffff; }
#practiceView .practice-progress-line { background: #134e4a; }
#practiceView .practice-progress-line i { background: #fde047; }

/* Footer buttons */
#practiceView .btn-action-star { background: #f59e0b; border: 1px solid #d97706; color: #ffffff; }
#practiceView .btn-action-star:hover { background: #d97706; }
#practiceView .btn-action-star.active { background: #b45309; border-color: #92400e; color: #ffffff; }
#practiceView #btnPracticeMarkReview { background: #7c3aed; border: 1px solid #6d28d9; color: #ffffff; border-radius: 10px; }
#practiceView #btnPracticeMarkReview:hover { background: #6d28d9; }
#practiceView #btnPracticeSkip { background: #e2e8f0; border: 1px solid #94a3b8; color: #1e293b; }
#practiceView #btnPracticeSkip:hover { background: #cbd5e1; border-color: #64748b; }
#practiceView #btnPracticeClear { background: #fee2e2; border: 1px solid #fca5a5; color: #b91c1c; }
#practiceView #btnPracticeClear:hover:not(:disabled) { background: #fecaca; color: #991b1b; border-color: #f87171; }
#practiceView .btn-action-nav, #practiceView #btnPracticePrev { background: #334155; border: 1px solid #1e293b; color: #ffffff; }
#practiceView #btnPracticePrev:hover:not(:disabled) { background: #1e293b; border-color: #0f172a; }
#practiceView #btnPracticePrev:disabled { opacity: 0.45; cursor: default; }
#practiceView .btn-action-submit, #practiceView #btnPracticeSubmit { background: #16a34a; border: 1px solid #15803d; color: #ffffff; }
#practiceView #btnPracticeSubmit:disabled { background: #94a3b8; border-color: #94a3b8; color: #ffffff; box-shadow: none; }
#practiceView #btnPracticeNext, #practiceView .btn-action-next { background: #0f766e; border: 1px solid #115e59; color: #ffffff; }
#practiceView #btnPracticeExamSubmit { background: #dc2626; border: 1px solid #b91c1c; color: #ffffff; border-radius: 10px; }

/* Side panel + chapter/topic controls */
#practiceView .pal-filter-select { background: #ffffff; border: 1.5px solid #94a3b8; color: #0f172a; font-weight: 600; }
#practiceView .ct-trigger { background: #ffffff; border: 1.5px solid #94a3b8; }
#practiceView .ct-trigger:hover { border-color: #0f766e; }
#practiceView .ct-back { background: #0f766e; color: #ffffff; }
#practiceView .ct-back:hover { background: #115e59; }

/* PRACTICE v4.4: blue instead of green/teal */
body.practice-active #practiceView {
  --pv-bg: #eaf0fb; --pv-card: #f4f7fd; --pv-panel: #e3ebf8; --pv-panel-head: #d7e2f4; --pv-line: #cfdbef; --pv-foot: #f7f9fe;
  --accent-indigo: #1d4ed8; --border-accent: rgba(29, 78, 216, 0.35);
}
#practiceView .practice-bar { background: #1d4ed8; box-shadow: 0 3px 10px rgba(15, 23, 42, 0.25); }
#practiceView .practice-bar .practice-stopwatch-pill,
#practiceView .practice-progress-pill { background: #1e3a8a; border-color: #1e3a8a; color: #ffffff; }
#practiceView .practice-bar .btn-bar { color: #1e3a8a; }
#practiceView .practice-bar .btn-bar:hover { background: #dbeafe; border-color: #dbeafe; color: #1e3a8a; }
#practiceView .practice-progress-line { background: #1e3a8a; }
#practiceView .q-title-text, #practiceView .practice-pal-count, #practiceView .practice-tree-count { color: #1d4ed8; }

#practiceView .modern-opt-card.selected { background: #e8efff; border-color: #1d4ed8; box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.12); }
#practiceView .modern-opt-card.selected .opt-badge { background: #1d4ed8; }
#practiceView .modern-opt-card:hover:not(.selected) { background: #f1f5ff; border-color: #93c5fd; }
#practiceView .practice-pal-btn.active { border-color: #1d4ed8 !important; background: #e8efff !important; color: #1e3a8a !important; box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.18) !important; }

#practiceView #btnPracticeNext, #practiceView .btn-action-next { background: #1d4ed8; border-color: #1e40af; color: #ffffff; box-shadow: 0 2px 8px rgba(29, 78, 216, 0.28); }
#practiceView #btnPracticeNext:hover { background: #1e40af; }
#practiceView .btn-action-submit, #practiceView #btnPracticeSubmit { background: #ea580c; border-color: #c2410c; color: #ffffff; box-shadow: 0 2px 8px rgba(234, 88, 12, 0.28); }
#practiceView .btn-action-submit:hover, #practiceView #btnPracticeSubmit:hover { background: #c2410c; }

#practiceView .ct-trigger:hover { border-color: #1d4ed8; }
#practiceView .ct-wrap.open .ct-trigger { border-color: #1d4ed8; box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.14); }
#practiceView .ct-item.active { background: #e8efff; }
#practiceView .ct-item.active .ct-item-name, #practiceView .ct-item-all .ct-item-name { color: #1e3a8a; }
#practiceView .ct-back { background: #1d4ed8; color: #ffffff; }
#practiceView .ct-back:hover { background: #1e40af; }
#practiceView .ct-progress-track i { background: linear-gradient(90deg, #3b82f6, #6366f1); }

/* PRACTICE v4.5: vibrant violet / pink / orange */
body.practice-active #practiceView {
  --pv-bg: #f3ecff; --pv-card: #faf6ff; --pv-panel: #ece1ff; --pv-panel-head: #e0d0ff; --pv-line: #d9c8fb; --pv-foot: #fbf8ff;
  --accent-indigo: #7c3aed; --border-accent: rgba(124, 58, 237, 0.4);
}
#practiceView .practice-bar { background: #7c3aed; box-shadow: 0 4px 14px rgba(91, 33, 182, 0.4); }
#practiceView .practice-bar .practice-stopwatch-pill,
#practiceView .practice-progress-pill { background: #4c1d95; border-color: #4c1d95; color: #ffffff; }
#practiceView .practice-bar .btn-bar { background: #ffffff; border-color: #ffffff; color: #5b21b6; font-weight: 800; }
#practiceView .practice-bar .btn-bar:hover { background: #ede9fe; border-color: #ede9fe; color: #4c1d95; }
#practiceView .practice-bar .btn-bar-end { background: #f43f5e; border-color: #f43f5e; color: #ffffff; }
#practiceView .practice-bar .btn-bar-end:hover { background: #e11d48; border-color: #e11d48; }
#practiceView .practice-progress-line { background: #4c1d95; }
#practiceView .practice-progress-line i { background: #facc15; }
#practiceView .q-title-text, #practiceView .practice-pal-count, #practiceView .practice-tree-count { color: #7c3aed; }
#practiceView .q-badge { font-weight: 700; }

#practiceView .modern-opt-card.selected { background: #f1e8ff; border-color: #7c3aed; box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.16); }
#practiceView .modern-opt-card.selected .opt-badge { background: #7c3aed; }
#practiceView .modern-opt-card:hover:not(.selected) { background: #f7f1ff; border-color: #c4b5fd; }
#practiceView .practice-pal-btn.active { border-color: #7c3aed !important; background: #7c3aed !important; color: #ffffff !important; box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25) !important; }

#practiceView #btnPracticeNext, #practiceView .btn-action-next { background: #db2777; border-color: #be185d; color: #ffffff; box-shadow: 0 3px 10px rgba(219, 39, 119, 0.35); }
#practiceView #btnPracticeNext:hover { background: #be185d; }
#practiceView .btn-action-submit, #practiceView #btnPracticeSubmit { background: #f97316; border-color: #ea580c; color: #ffffff; box-shadow: 0 3px 10px rgba(249, 115, 22, 0.35); }
#practiceView .btn-action-submit:hover, #practiceView #btnPracticeSubmit:hover { background: #ea580c; }
#practiceView #btnPracticeMarkReview { background: #0891b2; border-color: #0e7490; }
#practiceView #btnPracticeMarkReview:hover { background: #0e7490; }
#practiceView .btn-action-nav, #practiceView #btnPracticePrev { background: #4c1d95; border-color: #3b0764; }
#practiceView #btnPracticePrev:hover:not(:disabled) { background: #3b0764; }

#practiceView .ct-trigger:hover, #practiceView .ct-wrap.open .ct-trigger { border-color: #7c3aed; }
#practiceView .ct-wrap.open .ct-trigger { box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.18); }
#practiceView .ct-item.active { background: #f1e8ff; }
#practiceView .ct-item.active .ct-item-name, #practiceView .ct-item-all .ct-item-name { color: #5b21b6; }
#practiceView .ct-back { background: #7c3aed; }
#practiceView .ct-back:hover { background: #6d28d9; }
#practiceView .ct-progress-track i { background: linear-gradient(90deg, #a855f7, #ec4899); }

/* PRACTICE v4.6: professional exam palette (navy header, neutral grey page, restrained accents) */
body.practice-active #practiceView {
  --pv-bg: #eef1f5; --pv-card: #f7f9fb; --pv-panel: #e8edf3; --pv-panel-head: #dde4ec; --pv-line: #d3dbe5; --pv-foot: #ffffff;
  --accent-indigo: #0b5cab; --border-accent: rgba(11, 92, 171, 0.35);
  background: #eef1f5 !important;
}
#practiceView .practice-bar { background: #12355b; box-shadow: 0 2px 6px rgba(15, 23, 42, 0.25); border-bottom: 3px solid #0b6fb8; }
#practiceView .practice-bar .breadcrumb-subj, #practiceView .practice-bar .breadcrumb-topic { color: #ffffff; }
#practiceView .practice-bar .breadcrumb-chap { color: #c5d3e4; }
#practiceView .practice-bar .practice-stopwatch-pill,
#practiceView .practice-progress-pill { background: #0b2540; border: 1px solid #3d5f87; color: #ffffff; }
#practiceView .practice-bar .btn-bar { background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.4); color: #ffffff; font-weight: 600; }
#practiceView .practice-bar .btn-bar:hover { background: rgba(255, 255, 255, 0.24); border-color: #ffffff; color: #ffffff; }
#practiceView .practice-bar .btn-bar-end { background: #c62828; border-color: #c62828; color: #ffffff; font-weight: 700; }
#practiceView .practice-bar .btn-bar-end:hover { background: #a61f1f; border-color: #a61f1f; }
#practiceView .practice-progress-line { background: #0b2540; }
#practiceView .practice-progress-line i { background: #4fb3ff; }
#practiceView .q-title-text, #practiceView .practice-pal-count, #practiceView .practice-tree-count { color: #12355b; }

/* Question area */
#practiceView .q-badge { background: #e3ecf6 !important; color: #12355b !important; border: 1px solid #c3d3e6 !important; font-weight: 600; }
#practiceView .q-badge-rule { background: #f1f4f8 !important; color: #475569 !important; border: 1px dashed #b8c3d1 !important; }
#practiceView .modern-opt-card { border: 1.5px solid #d3dbe5; }
#practiceView .modern-opt-card:hover:not(.selected) { background: #f4f8fc; border-color: #7aa6d3; }
#practiceView .modern-opt-card.selected { background: #e6f0fa; border-color: #0b5cab; box-shadow: 0 0 0 3px rgba(11, 92, 171, 0.14); }
#practiceView .modern-opt-card.selected .opt-badge { background: #0b5cab; color: #ffffff; }

/* Palette */
#practiceView .practice-pal-btn.active { border: 2px solid #12355b !important; background: #12355b !important; color: #ffffff !important; box-shadow: none !important; }
#practiceView .practice-pal-btn.pal-correct { background: #e3f4e6 !important; border-color: #43a047 !important; color: #2e7d32 !important; }
#practiceView .practice-pal-btn.pal-wrong { background: #fde8e8 !important; border-color: #e57373 !important; color: #c62828 !important; }
#practiceView .practice-pal-btn.pal-skipped { background: #fff3e0 !important; border-color: #ffb74d !important; color: #e65100 !important; }

/* Footer: neutral buttons, two clear primaries */
#practiceView .btn-action-star { background: #ffffff; color: #8a5a00; border: 1px solid #e0b252; }
#practiceView .btn-action-star:hover { background: #fff7e0; }
#practiceView .btn-action-star.active { background: #f5b301; border-color: #d99a00; color: #3b2a00; }
#practiceView #btnPracticeMarkReview { background: #ffffff; color: #4a3a8a; border: 1px solid #b5aae0; }
#practiceView #btnPracticeMarkReview:hover { background: #f1eefb; }
#practiceView #btnPracticeSkip { background: #ffffff; color: #334155; border: 1px solid #b8c3d1; }
#practiceView #btnPracticeSkip:hover { background: #eef2f7; border-color: #7b8ba0; }
#practiceView #btnPracticeClear { background: #ffffff; color: #b42323; border: 1px solid #e3b4b4; }
#practiceView #btnPracticeClear:hover:not(:disabled) { background: #fdeeee; color: #8f1a1a; border-color: #d98c8c; }
#practiceView .btn-action-nav, #practiceView #btnPracticePrev { background: #ffffff; color: #12355b; border: 1px solid #9bb2cc; }
#practiceView #btnPracticePrev:hover:not(:disabled) { background: #eaf1f9; border-color: #12355b; }
#practiceView .btn-action-submit, #practiceView #btnPracticeSubmit { background: #0b6fb8; border: 1px solid #095a96; color: #ffffff; box-shadow: none; }
#practiceView .btn-action-submit:hover, #practiceView #btnPracticeSubmit:hover { background: #095a96; }
#practiceView #btnPracticeNext, #practiceView .btn-action-next { background: #12355b; border: 1px solid #0b2540; color: #ffffff; box-shadow: none; }
#practiceView #btnPracticeNext:hover { background: #0b2540; }
#practiceView #btnPracticeExamSubmit { background: #c62828; border-color: #a61f1f; color: #ffffff; }

/* Chapters & topics */
#practiceView .ct-trigger:hover, #practiceView .ct-wrap.open .ct-trigger { border-color: #0b5cab; }
#practiceView .ct-wrap.open .ct-trigger { box-shadow: 0 0 0 3px rgba(11, 92, 171, 0.15); }
#practiceView .ct-item.active { background: #e6f0fa; }
#practiceView .ct-item.active .ct-item-name, #practiceView .ct-item-all .ct-item-name { color: #12355b; }
#practiceView .ct-back { background: #12355b; color: #ffffff; }
#practiceView .ct-back:hover { background: #0b2540; }
#practiceView .ct-progress-track i { background: #0b6fb8; }

/* PRACTICE v4.7: refined bottom action bar */
#practiceView .modern-quiz-actions {
  height: 66px; min-height: 66px; padding: 0 1.5rem; background: #ffffff;
  border-top: 1px solid #d3dbe5; box-shadow: 0 -4px 14px rgba(15, 23, 42, 0.06);
}
/* left: tools grouped in one soft tray */
#practiceView .practice-btn-left-group {
  gap: 2px; padding: 4px; background: #eef1f5; border: 1px solid #dde4ec; border-radius: 12px;
}
#practiceView .practice-btn-left-group > button {
  height: 38px; padding: 0 1rem; border-radius: 9px; border: 1px solid transparent !important;
  background: transparent !important; box-shadow: none !important; font-size: 0.84rem; font-weight: 600; color: #334155;
  display: inline-flex; align-items: center; gap: 0.4rem; transition: background 0.12s ease, color 0.12s ease;
}
#practiceView .practice-btn-left-group > button:hover:not(:disabled) { background: #ffffff !important; color: #12355b; box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12) !important; }
#practiceView .btn-action-star { color: #8a5a00; }
#practiceView .btn-action-star .star-ico { color: #e0a100; font-size: 1.05rem; }
#practiceView .btn-action-star:hover:not(:disabled) { color: #6b4500; }
#practiceView .btn-action-star.active { background: #fff3c4 !important; color: #6b4500; border-color: #f0c64a !important; }
#practiceView .btn-action-star.active .star-ico { color: #d99a00; }
#practiceView #btnPracticeMarkReview { color: #4a3a8a; }
#practiceView #btnPracticeClear { color: #b42323; }
#practiceView #btnPracticeClear:hover:not(:disabled) { background: #fdeeee !important; color: #8f1a1a; }

/* right: Previous · Submit · Next as one aligned row */
#practiceView .practice-btn-right-group { gap: 0.6rem; }
#practiceView .practice-btn-right-group > button {
  height: 42px; min-width: 112px; padding: 0 1.3rem; border-radius: 10px; font-size: 0.9rem; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
}
#practiceView #btnPracticePrev { background: #ffffff; color: #12355b; border: 1.5px solid #9bb2cc; }
#practiceView #btnPracticeSubmit { min-width: 148px; background: #0b6fb8; border: 1px solid #095a96; color: #ffffff; box-shadow: 0 2px 6px rgba(11, 111, 184, 0.3); }
#practiceView #btnPracticeNext { background: #12355b; border: 1px solid #0b2540; color: #ffffff; box-shadow: 0 2px 6px rgba(18, 53, 91, 0.3); }
#practiceView #btnPracticeExamSubmit { min-width: 130px; }

@media (max-width: 900px) {
  #practiceView .practice-btn-left-group > button { padding: 0 0.7rem; }
  #practiceView .practice-btn-right-group > button { min-width: 0; padding: 0 0.9rem; }
}
@media (max-width: 720px) {
  #practiceView .modern-quiz-actions { height: auto; padding: 0.5rem 0.6rem; gap: 0.5rem; }
}

/* PRACTICE v4.8: bottom bar matches the navy header */
#practiceView .modern-quiz-actions {
  height: 68px; min-height: 68px; padding: 0 1.5rem; background: #12355b;
  border-top: 3px solid #0b6fb8; box-shadow: 0 -3px 10px rgba(15, 23, 42, 0.2);
}
#practiceView .practice-btn-left-group { gap: 0.5rem; padding: 0; background: transparent; border: none; border-radius: 0; }
#practiceView .practice-btn-left-group > button {
  height: 40px; padding: 0 1.05rem; border-radius: 9px; font-size: 0.85rem; font-weight: 600;
  background: rgba(255, 255, 255, 0.10) !important; color: #ffffff; border: 1px solid rgba(255, 255, 255, 0.35) !important; box-shadow: none !important;
}
#practiceView .practice-btn-left-group > button:hover:not(:disabled) { background: rgba(255, 255, 255, 0.22) !important; color: #ffffff; border-color: #ffffff !important; box-shadow: none !important; }
#practiceView .btn-action-star { color: #ffe08a; }
#practiceView .btn-action-star .star-ico { color: #ffc933; }
#practiceView .btn-action-star:hover:not(:disabled) { color: #ffffff; }
#practiceView .btn-action-star.active { background: #ffc933 !important; color: #3b2a00; border-color: #ffc933 !important; }
#practiceView .btn-action-star.active .star-ico { color: #7a5200; }
#practiceView #btnPracticeMarkReview { color: #ffffff; }
#practiceView #btnPracticeClear { color: #ffb4b4; }
#practiceView #btnPracticeClear:hover:not(:disabled) { background: rgba(255, 90, 90, 0.25) !important; color: #ffffff; border-color: #ff9a9a !important; }

#practiceView #btnPracticePrev { background: transparent; color: #ffffff; border: 1.5px solid rgba(255, 255, 255, 0.55); box-shadow: none; }
#practiceView #btnPracticePrev:hover:not(:disabled) { background: rgba(255, 255, 255, 0.16); border-color: #ffffff; }
#practiceView #btnPracticePrev:disabled { opacity: 0.4; }
#practiceView #btnPracticeSubmit { background: #1e90ff; border: 1px solid #1e90ff; color: #ffffff; box-shadow: none; }
#practiceView #btnPracticeSubmit:hover { background: #3aa0ff; border-color: #3aa0ff; }
#practiceView #btnPracticeSubmit:disabled { background: #4b6a8d; border-color: #4b6a8d; color: #c7d4e3; }
#practiceView #btnPracticeNext { background: #ffffff; border: 1px solid #ffffff; color: #12355b; box-shadow: none; }
#practiceView #btnPracticeNext:hover { background: #e3eefb; }
#practiceView #btnPracticeExamSubmit { background: #c62828; border-color: #c62828; color: #ffffff; }

/* PRACTICE v4.9: clean light bottom bar (checked against screenshots) */
#practiceView .modern-quiz-actions {
  height: 64px; min-height: 64px; padding: 0 1.5rem; background: #ffffff;
  border-top: 1px solid #d3dbe5; box-shadow: 0 -2px 10px rgba(15, 23, 42, 0.05);
}
#practiceView .practice-btn-left-group { gap: 0.5rem; padding: 0; background: transparent; border: none; border-radius: 0; }
#practiceView .practice-btn-left-group > button {
  height: 40px; padding: 0 1.1rem; border-radius: 8px; font-size: 0.85rem; font-weight: 600;
  background: #ffffff !important; color: #1e293b; border: 1px solid #c5cfdb !important; box-shadow: none !important;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
#practiceView .practice-btn-left-group > button:hover:not(:disabled) { background: #f1f5f9 !important; border-color: #8fa0b5 !important; color: #0f172a; box-shadow: none !important; }
#practiceView .practice-btn-left-group > button:disabled { background: #f1f5f9 !important; color: #94a3b8; border-color: #e2e8f0 !important; cursor: not-allowed; opacity: 1; }
#practiceView .btn-action-star { color: #6b4a00; }
#practiceView .btn-action-star .star-ico { color: #e0a100; font-size: 1.05rem; }
#practiceView .btn-action-star.active { background: #fff3c4 !important; border-color: #f0c64a !important; color: #6b4a00; }
#practiceView #btnPracticeMarkReview { color: #4a3a8a; }
#practiceView #btnPracticeClear { color: #b42323; }
#practiceView #btnPracticeClear:hover:not(:disabled) { background: #fdeeee !important; border-color: #e0a5a5 !important; color: #8f1a1a; }
#practiceView #btnPracticeClear:disabled { color: #c9a3a3; }

#practiceView .practice-btn-right-group { gap: 0.6rem; }
#practiceView .practice-btn-right-group > button { height: 42px; min-width: 116px; padding: 0 1.3rem; border-radius: 8px; font-size: 0.9rem; font-weight: 700; }
#practiceView #btnPracticePrev { background: #ffffff; color: #12355b; border: 1.5px solid #9bb2cc; box-shadow: none; }
#practiceView #btnPracticePrev:hover:not(:disabled) { background: #eaf1f9; border-color: #12355b; }
#practiceView #btnPracticePrev:disabled { background: #f1f5f9; color: #94a3b8; border-color: #dde4ec; opacity: 1; }
#practiceView #btnPracticeSubmit { min-width: 150px; background: #0b6fb8; border: 1px solid #095a96; color: #ffffff; box-shadow: 0 2px 6px rgba(11, 111, 184, 0.28); }
#practiceView #btnPracticeSubmit:hover:not(:disabled) { background: #095a96; }
#practiceView #btnPracticeSubmit:disabled, #practiceView #btnPracticeSubmit.btn-submitted-state {
  background: #e6f0fa; color: #0b5cab; border: 1px solid #b8d4ee; box-shadow: none; cursor: default; opacity: 1;
}
#practiceView #btnPracticeNext { background: #12355b; border: 1px solid #0b2540; color: #ffffff; box-shadow: 0 2px 6px rgba(18, 53, 91, 0.28); }
#practiceView #btnPracticeNext:hover { background: #0b2540; }
#practiceView #btnPracticeSubmit.btn-submitted-state,
#practiceView #btnPracticeSubmit:disabled { background: #e6f0fa !important; color: #0b5cab !important; border: 1px solid #b8d4ee !important; box-shadow: none !important; }

/* Leaderboard modal */
.lb-dialog { max-width: 720px; width: 94%; max-height: 86vh; display: flex; flex-direction: column; }
.lb-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 1.2rem 1.5rem; border-bottom: 1px solid var(--border-color); }
.lb-title { font-size: 1.3rem; font-weight: 900; margin: 0; color: var(--text-main); }
.lb-sub { font-size: 0.82rem; color: var(--text-muted); margin: 0.25rem 0 0; }
.lb-close { background: none; border: none; color: var(--text-main); font-size: 1.7rem; line-height: 1; cursor: pointer; }
.lb-body { padding: 1rem 1.5rem 1.4rem; overflow-y: auto; }
.lb-you { background: rgba(99, 102, 241, 0.14); border: 1px solid var(--border-accent); border-radius: 10px; padding: 0.55rem 0.9rem; margin-bottom: 0.9rem; font-size: 0.9rem; }
.lb-table-wrap { overflow-x: auto; }
.lb-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.lb-table th { text-align: left; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-muted); padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border-color); white-space: nowrap; }
.lb-table th.lb-num { cursor: pointer; }
.lb-table th.lb-num:hover, .lb-table th.sorted { color: var(--accent-cyan); }
.lb-table td { padding: 0.65rem 0.6rem; border-bottom: 1px solid var(--border-color); white-space: nowrap; }
.lb-num { text-align: right !important; font-variant-numeric: tabular-nums; }
.lb-rank { width: 44px; text-align: center !important; font-weight: 800; font-size: 1.05rem; }
.lb-av { font-size: 1.25rem; margin-right: 0.6rem; vertical-align: middle; }
.lb-name { font-weight: 700; vertical-align: middle; }
.lb-tag { margin-left: 0.5rem; font-size: 0.68rem; font-weight: 800; background: var(--accent-indigo); color: #fff; border-radius: 99px; padding: 2px 8px; vertical-align: middle; }
.lb-unit { color: var(--text-muted); font-size: 0.78rem; margin-left: 2px; }
.lb-me td { background: rgba(99, 102, 241, 0.12); }
.lb-empty { padding: 2rem 0; text-align: center; color: var(--text-muted); }

/* Practice timer: pause button + paused state */
#practiceView .practice-stopwatch-pill { gap: 0.55rem; }
.timer-pause-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; margin-left: 0.15rem; padding: 0;
  border-radius: 50%; border: none; cursor: pointer;
  background: rgba(255, 255, 255, 0.18); color: #ffffff; font-size: 0.7rem; line-height: 1;
  transition: background 0.15s ease, transform 0.1s ease;
}
.timer-pause-btn:hover { background: rgba(255, 255, 255, 0.34); }
.timer-pause-btn:active { transform: scale(0.92); }
.timer-pause-btn.hidden { display: none; }
#practiceView .practice-stopwatch-pill.paused { background: #7a4d00; border-color: #b87500; }
#practiceView .practice-stopwatch-pill.paused .stopwatch-digits { animation: pauseBlink 1.2s ease-in-out infinite; }
#practiceView .practice-stopwatch-pill.paused .timer-pause-btn { background: #fbbf24; color: #3b2a00; }
@keyframes pauseBlink { 50% { opacity: 0.45; } }

#practiceView .modern-q-card { position: relative; }
.practice-pause-overlay {
  position: absolute; inset: 0; z-index: 30; display: flex; align-items: center; justify-content: center;
  background: rgba(238, 241, 245, 0.97); backdrop-filter: blur(6px);
}
.practice-pause-overlay.hidden { display: none; }
.pause-card { text-align: center; max-width: 360px; padding: 2rem; }
.pause-ico { font-size: 2.6rem; color: #12355b; }
.pause-title { font-size: 1.5rem; font-weight: 800; color: #12355b; margin: 0.4rem 0; }
.pause-sub { color: #475569; font-size: 0.92rem; line-height: 1.5; margin-bottom: 1.2rem; }
.pause-resume-btn {
  background: #0b6fb8; color: #ffffff; border: 1px solid #095a96; border-radius: 10px;
  padding: 0.7rem 1.8rem; font-size: 1rem; font-weight: 700; cursor: pointer; font-family: inherit;
}
.pause-resume-btn:hover { background: #095a96; }

/* Long Retention: dashboard card extras, weak topics panel, review rating */
.mode-stats-row { display: flex; gap: 1rem; margin-top: 0.7rem; font-size: 0.78rem; color: var(--text-muted); }
.mode-stats-row b { color: var(--text-main); font-size: 0.95rem; }
.mode-link-btn { display: block; width: 100%; margin-top: 0.5rem; padding: 0.5rem; background: transparent; border: 1px dashed var(--border-accent); border-radius: 10px; color: var(--text-muted); font: inherit; font-size: 0.8rem; font-weight: 600; cursor: pointer; }
.mode-link-btn:hover { color: var(--text-main); border-color: var(--accent-rose); }

.wt-dialog { max-width: 820px; }
.wt-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.7rem; }
.wt-chip { background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-muted); border-radius: 99px; padding: 0.35rem 0.8rem; font: inherit; font-size: 0.8rem; font-weight: 600; cursor: pointer; }
.wt-chip b { color: var(--text-main); margin-left: 0.2rem; }
.wt-chip.active { border-color: var(--accent-indigo); color: var(--text-main); background: rgba(99, 102, 241, 0.16); }
.wt-note { font-size: 0.78rem; color: var(--text-muted); margin: 0 0 0.9rem; line-height: 1.5; }
.wt-card { border: 1px solid var(--border-color); border-left: 4px solid var(--text-dim); border-radius: 12px; padding: 0.9rem 1rem; margin-bottom: 0.7rem; background: var(--bg-card); }
.wt-card.wt-weak { border-left-color: #ef4444; }
.wt-card.wt-watch { border-left-color: #f59e0b; }
.wt-card.wt-strong { border-left-color: #22c55e; }
.wt-top { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; }
.wt-name { font-weight: 800; font-size: 1rem; color: var(--text-main); }
.wt-path { font-size: 0.74rem; color: var(--text-muted); margin-top: 2px; }
.wt-score { text-align: right; white-space: nowrap; }
.wt-score b { font-size: 1.5rem; color: var(--text-main); }
.wt-score span { font-size: 0.75rem; color: var(--text-muted); }
.wt-bar { height: 5px; background: var(--border-color); border-radius: 99px; overflow: hidden; margin: 0.5rem 0 0.6rem; }
.wt-bar i { display: block; height: 100%; background: linear-gradient(90deg, #f59e0b, #ef4444); border-radius: 99px; }
.wt-strong .wt-bar i { background: #22c55e; }
.wt-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; font-size: 0.78rem; }
.wt-tag { background: rgba(99, 102, 241, 0.18); color: var(--accent-indigo); border-radius: 99px; padding: 2px 10px; font-weight: 700; }
.wt-meta { color: var(--text-muted); }
.wt-reasons { margin: 0.55rem 0 0 1.1rem; padding: 0; font-size: 0.82rem; color: var(--text-main); line-height: 1.55; }
.wt-foot { display: flex; justify-content: space-between; align-items: center; gap: 0.8rem; margin-top: 0.7rem; flex-wrap: wrap; }
.wt-action { font-size: 0.8rem; color: var(--text-muted); flex: 1; min-width: 200px; }
.wt-drill { padding: 0.45rem 0.9rem; font-size: 0.82rem; }

.srs-rating { margin-top: 0.9rem; padding-top: 0.9rem; border-top: 1px dashed var(--border-color); }
.srs-title { font-weight: 800; font-size: 0.92rem; color: var(--text-main); }
.srs-title span { font-weight: 500; font-size: 0.78rem; color: var(--text-muted); margin-left: 0.4rem; }
.srs-btns { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; margin: 0.6rem 0 0.4rem; }
.srs-btn { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 0.55rem 0.4rem; border-radius: 10px; border: 1.5px solid var(--border-color); background: var(--bg-secondary); color: var(--text-main); font: inherit; font-weight: 700; font-size: 0.9rem; cursor: pointer; }
.srs-btn small { font-size: 0.7rem; font-weight: 600; color: var(--text-muted); }
.srs-btn.again:hover, .srs-btn.again.picked { border-color: #ef4444; background: #fee2e2; color: #b91c1c; }
.srs-btn.hard:hover, .srs-btn.hard.picked { border-color: #f59e0b; background: #fef3c7; color: #b45309; }
.srs-btn.good:hover, .srs-btn.good.picked { border-color: #0b6fb8; background: #e0f0fb; color: #0b5cab; }
.srs-btn.easy:hover, .srs-btn.easy.picked { border-color: #16a34a; background: #dcfce7; color: #15803d; }
.srs-next { font-size: 0.78rem; color: var(--text-muted); }
@media (max-width: 520px) { .srs-btns { grid-template-columns: repeat(2, 1fr); } }

.res-retention-card { background: var(--bg-card); border: 1px solid var(--border-accent); border-radius: 16px; padding: 1.1rem 1.4rem; margin-bottom: 1.2rem; }
.rrc-title { font-weight: 800; font-size: 1.05rem; margin-bottom: 0.7rem; color: var(--text-main); }
.rrc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; }
.rrc-grid div { background: var(--bg-secondary); border-radius: 10px; padding: 0.6rem; text-align: center; }
.rrc-grid b { display: block; font-size: 1.4rem; color: var(--text-main); }
.rrc-grid span { font-size: 0.72rem; color: var(--text-muted); }
.rrc-next { margin-top: 0.8rem; font-size: 0.88rem; color: var(--text-muted); display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.rrc-next strong { color: var(--text-main); }
.rrc-next .btn-primary { padding: 0.35rem 0.9rem; font-size: 0.82rem; }
@media (max-width: 600px) { .rrc-grid { grid-template-columns: repeat(2, 1fr); } }

/* Analytics v2: plan, trends, calendar, diagnostics, score estimate */
.plan-list { display: flex; flex-direction: column; gap: 0.7rem; }
.plan-card { display: flex; align-items: center; gap: 1rem; padding: 0.9rem 1rem; border-radius: 12px; border: 1px solid var(--border-color); border-left: 4px solid var(--accent-indigo); background: var(--bg-secondary); }
.plan-card.plan-bad { border-left-color: #ef4444; }
.plan-card.plan-warn { border-left-color: #f59e0b; }
.plan-card.plan-good { border-left-color: #22c55e; }
.plan-icon { font-size: 1.6rem; flex: none; width: 40px; text-align: center; }
.plan-main { flex: 1; min-width: 0; }
.plan-title { font-weight: 800; font-size: 0.98rem; color: var(--text-main); }
.plan-detail { font-size: 0.84rem; color: var(--text-muted); line-height: 1.5; margin-top: 2px; }
.plan-cta { flex: none; padding: 0.5rem 1rem; font-size: 0.84rem; white-space: nowrap; }
@media (max-width: 640px) { .plan-card { flex-wrap: wrap; } .plan-cta { width: 100%; } }

.score-hero { display: flex; align-items: center; gap: 1.4rem; margin: 0.4rem 0 0.6rem; }
.score-num { font-size: 3rem; font-weight: 900; line-height: 1; color: var(--text-main); }
.score-range { flex: 1; }
.score-track { position: relative; height: 10px; border-radius: 99px; background: var(--border-color); }
.score-track i { position: absolute; top: 0; bottom: 0; background: linear-gradient(90deg, #6366f1, #06b6d4); border-radius: 99px; opacity: 0.55; }
.score-track b { position: absolute; top: -4px; width: 4px; height: 18px; background: var(--text-main); border-radius: 2px; transform: translateX(-2px); }
.score-ends { display: flex; justify-content: space-between; font-size: 0.74rem; color: var(--text-muted); margin-top: 5px; }
.score-rows { margin-top: 0.8rem; display: flex; flex-direction: column; gap: 0.45rem; }
.score-row { display: grid; grid-template-columns: minmax(110px, 1.3fr) 2fr 70px; gap: 0.7rem; align-items: center; font-size: 0.8rem; }
.score-sub { color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.score-bar { height: 7px; background: var(--border-color); border-radius: 99px; overflow: hidden; }
.score-bar i { display: block; height: 100%; background: var(--accent-indigo); border-radius: 99px; }
.score-val { text-align: right; font-weight: 700; color: var(--text-main); font-variant-numeric: tabular-nums; }
.score-val small { color: var(--text-muted); font-weight: 500; }

.wk-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
.wk-grid > div { background: var(--bg-secondary); border-radius: 10px; padding: 0.7rem 0.8rem; display: flex; flex-direction: column; gap: 2px; }
.wk-grid span { font-size: 0.72rem; color: var(--text-muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.wk-grid strong { font-size: 1.5rem; color: var(--text-main); }
.wk-up { color: #22c55e; font-size: 0.76rem; font-weight: 700; }
.wk-down { color: #ef4444; font-size: 0.76rem; font-weight: 700; }
.wk-flat { color: var(--text-muted); font-size: 0.76rem; }

.tr-chart { width: 100%; height: auto; display: block; margin-top: 0.4rem; }
.tr-bar { fill: rgba(99, 102, 241, 0.35); }
.tr-bar:hover { fill: rgba(99, 102, 241, 0.6); }
.tr-line { fill: none; stroke: #22c55e; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.tr-dot { fill: #22c55e; stroke: var(--bg-card); stroke-width: 2; }
.tr-grid { stroke: var(--border-color); stroke-dasharray: 3 4; }
.tr-axis { fill: var(--text-muted); font-size: 11px; }
.tr-key { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin: 0 4px 0 10px; vertical-align: middle; }
.tr-key.bar { background: rgba(99, 102, 241, 0.5); }
.tr-key.line { background: #22c55e; }

.cal-grid { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 14px); gap: 4px; overflow-x: auto; padding: 0.3rem 0; justify-content: start; }
.cal-cell { display: block; width: 14px; height: 14px; border-radius: 3px; background: var(--border-color); }
.cal-cell.pad { background: transparent; }
.cal-cell.l1 { background: rgba(34, 197, 94, 0.3); }
.cal-cell.l2 { background: rgba(34, 197, 94, 0.55); }
.cal-cell.l3 { background: rgba(34, 197, 94, 0.8); }
.cal-cell.l4 { background: #16a34a; }
.cal-legend { display: flex; align-items: center; gap: 4px; font-size: 0.72rem; color: var(--text-muted); margin-top: 0.4rem; }

.diag-pill { display: inline-block; padding: 2px 10px; border-radius: 99px; font-size: 0.74rem; font-weight: 700; white-space: nowrap; }
.diag-strong { background: rgba(34, 197, 94, 0.18); color: #16a34a; }
.diag-slow { background: rgba(245, 158, 11, 0.2); color: #d97706; }
.diag-guessing { background: rgba(168, 85, 247, 0.2); color: #9333ea; }
.diag-weak { background: rgba(239, 68, 68, 0.18); color: #dc2626; }
.diag-nodata { background: rgba(148, 163, 184, 0.2); color: var(--text-muted); }
.diag-advice { font-size: 0.8rem; color: var(--text-muted); max-width: 340px; white-space: normal; line-height: 1.4; }

.ana-vs { display: flex; align-items: center; justify-content: space-around; gap: 1rem; margin: 0.6rem 0; text-align: center; }
.ana-vs span { display: block; font-size: 0.74rem; color: var(--text-muted); font-weight: 700; text-transform: uppercase; }
.ana-vs strong { font-size: 2rem; color: var(--text-main); }
.ana-vs small { display: block; color: var(--text-muted); font-size: 0.74rem; }
.ana-vs-mid { font-size: 1.5rem; }
.diag-ok { background: rgba(14, 165, 233, 0.18); color: #0284c7; }
.tr-axis { font-size: 13px; }

/* Text colours for status pills: pastel on the dark theme, deeper on the light theme */
[data-theme="light"] {
  --t-rose: #be123c; --t-rose-soft: #be123c; --t-green: #15803d; --t-amber: #b45309; --t-sky: #0369a1;
  --t-violet: #6d28d9; --t-indigo: #4338ca; --t-slate: #475569;
}

/* =========================================================
   DESIGN SYSTEM — LIGHT THEME (navy header · cool-grey page · white cards)
   Scoped to [data-theme="light"] so the optional dark theme keeps working.
   ========================================================= */

/* Header */
[data-theme="light"] .app-navbar { background: #12355b; border-bottom: 3px solid #0b6fb8; box-shadow: 0 2px 8px rgba(15, 23, 42, 0.18); backdrop-filter: none; }
[data-theme="light"] .app-navbar .app-brand { color: #ffffff; }
[data-theme="light"] .app-navbar .brand-icon { background: #0b6fb8; box-shadow: none; }
[data-theme="light"] .app-navbar .brand-badge { background: rgba(255, 255, 255, 0.14); color: #dbeafe; border-color: rgba(255, 255, 255, 0.28); }
[data-theme="light"] .app-navbar .streak-badge { background: rgba(255, 255, 255, 0.14); color: #fdba74; border-color: rgba(253, 186, 116, 0.55); box-shadow: none; animation: none; }
[data-theme="light"] .app-navbar .user-profile-pill { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.3); box-shadow: none; }
[data-theme="light"] .app-navbar .user-profile-pill:hover { background: rgba(255, 255, 255, 0.22); border-color: #ffffff; transform: none; }
[data-theme="light"] .app-navbar .user-name-text { color: #ffffff; }
[data-theme="light"] .app-navbar .btn-analytics-nav,
[data-theme="light"] .app-navbar .btn-theme-toggle { background: rgba(255, 255, 255, 0.12); color: #ffffff; border: 1px solid rgba(255, 255, 255, 0.32); }
[data-theme="light"] .app-navbar .btn-analytics-nav:hover,
[data-theme="light"] .app-navbar .btn-theme-toggle:hover { background: rgba(255, 255, 255, 0.24); border-color: #ffffff; color: #ffffff; transform: none; }

/* Hero: a navy banner (white text) with a white momentum card */
[data-theme="light"] .master-hero-section {
  background: linear-gradient(135deg, #12355b 0%, #0b4a7d 100%);
  border: none; box-shadow: 0 10px 28px -12px rgba(18, 53, 91, 0.5); backdrop-filter: none;
}
[data-theme="light"] .master-hero-section::before { background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent); }
[data-theme="light"] .hero-top-badge { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.28); color: #e2ecf8; box-shadow: none; }
[data-theme="light"] .hero-year-pill { background: #0b6fb8; }
[data-theme="light"] .hero-gradient-text { background: linear-gradient(90deg, #7dd3fc, #86efac); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
[data-theme="light"] .master-hero-desc { color: #c5d6ea; }
[data-theme="light"] .master-hero-desc strong { color: #ffffff; }
[data-theme="light"] .hero-btn-primary { background: #ffffff; color: #12355b; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2); }
[data-theme="light"] .hero-btn-primary:hover { filter: none; box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28); background: #e8f1fb; }
[data-theme="light"] .hero-btn-secondary { background: rgba(255, 255, 255, 0.1); color: #ffffff; border-color: rgba(255, 255, 255, 0.4); backdrop-filter: none; }
[data-theme="light"] .hero-btn-secondary:hover { background: rgba(255, 255, 255, 0.22); border-color: #ffffff; }
[data-theme="light"] .hero-momentum-card { background: #ffffff; border: none; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22); }
[data-theme="light"] .momentum-target-box { background: #f5f8fc; }

/* Cards */
[data-theme="light"] .master-stats-grid .stat-card,
[data-theme="light"] .stat-card { background: #ffffff; border: 1px solid var(--border-color); box-shadow: var(--shadow-card); backdrop-filter: none; }
[data-theme="light"] .master-mode-card {
  background: #ffffff; border: 1px solid var(--border-color); border-radius: 16px; box-shadow: var(--shadow-card);
}
[data-theme="light"] .master-mode-card::before { opacity: 1; }
[data-theme="light"] .master-mode-card:hover { transform: translateY(-3px); border-color: var(--card-accent, var(--accent-indigo)); box-shadow: 0 12px 28px -10px rgba(15, 23, 42, 0.25); }
[data-theme="light"] .mode-action { border-top-color: var(--border-color); }
[data-theme="light"] .mode-feature-chips span { background: #f1f5f9; border-color: var(--border-color); }
[data-theme="light"] .mode-link-btn { border-color: var(--border-color); background: #f8fafc; }
[data-theme="light"] .mode-link-btn:hover { background: #fff1f2; }
[data-theme="light"] .comp-target-header, [data-theme="light"] .comp-rank-title { color: var(--text-main); }
[data-theme="light"] .comp-target-footer, [data-theme="light"] .comp-rank-sub { color: var(--text-muted); }
[data-theme="light"] .comp-target-bar-bg { background: #e5eaf1; }
[data-theme="light"] .analytics-user-title { color: var(--text-main); }

/* Shared components */
[data-theme="light"] .modal-header { background: #f5f8fc; border-bottom: 1px solid var(--border-color); }
[data-theme="light"] .modal-dialog { box-shadow: 0 24px 60px -12px rgba(15, 23, 42, 0.35); }
[data-theme="light"] .modal-backdrop { background: rgba(15, 23, 42, 0.5); backdrop-filter: blur(3px); }
[data-theme="light"] .btn-primary { background: #0b5cab; border: 1px solid #094c8f; color: #ffffff; box-shadow: 0 2px 6px rgba(11, 92, 171, 0.25); }
[data-theme="light"] .btn-primary:hover { background: #094c8f; transform: none; box-shadow: 0 3px 10px rgba(11, 92, 171, 0.3); }
[data-theme="light"] .btn-secondary { background: #ffffff; border: 1px solid #c5cfdb; color: #1e293b; }
[data-theme="light"] .btn-secondary:hover { background: #f1f5f9; border-color: #8fa0b5; }

/* Analytics + results surfaces */
[data-theme="light"] .analytics-hero-banner,
[data-theme="light"] .res-hero-banner,
[data-theme="light"] .competitive-hero-bar {
  background: #ffffff; border: 1px solid var(--border-color); border-top: 4px solid #12355b; box-shadow: var(--shadow-card); backdrop-filter: none;
}
[data-theme="light"] .res-hero-banner::before { display: none; }
[data-theme="light"] .res-hero-badge { background: #e6f0fa; color: #12355b; border-color: #b8d4ee; }
[data-theme="light"] .res-hero-banner h1, [data-theme="light"] .res-hero-banner h2 { color: var(--text-main); }
[data-theme="light"] .ana-tabs { background: #ffffff; border: 1px solid var(--border-color); box-shadow: var(--shadow-card); }
[data-theme="light"] .ana-tab-btn { color: var(--text-muted); }
[data-theme="light"] .ana-tab-btn:hover { color: var(--text-main); background: #f1f5f9; }
[data-theme="light"] .ana-tab-btn.active { background: #12355b; color: #ffffff; border-color: #12355b; box-shadow: none; }
[data-theme="light"] .res-verdict-card { background: #f5f8fc; border: 1px solid var(--border-color); }
[data-theme="light"] .weak-advisor-card { background: #fff7f8; border: 1px solid #fecdd3; box-shadow: var(--shadow-card); }
[data-theme="light"] .subject-fast-card { background: #ffffff; border: 1px solid var(--border-color); box-shadow: var(--shadow-card); }
[data-theme="light"] .subject-fast-card:hover { background: #f5f8fc; border-color: var(--accent-indigo); }
[data-theme="light"] .history-table th { background: #f1f5f9; color: var(--text-muted); }
[data-theme="light"] .comp-daily-target-card { background: #f5f8fc; }
[data-theme="light"] .tree-branch-children { background: #f8fafc; }
[data-theme="light"] .ana-input, [data-theme="light"] .ana-select { background: #ffffff; }
[data-theme="light"] .res-verdict-title { color: var(--text-main); }
[data-theme="light"] .review-q-num-pill { color: #ffffff; background: #12355b; border-color: #12355b; }
[data-theme="light"] .app-navbar .user-avatar-badge, [data-theme="light"] .app-navbar .user-profile-pill span { color: #ffffff; }
[data-theme="light"] .comp-tier-pill { background: #e6f0fa; color: #12355b; border: 1px solid #b8d4ee; }
[data-theme="light"] .starred-key-pill, [data-theme="light"] .starred-key-pill strong { color: #15803d; background: #e3f4e6; border-color: #a7d9b0; }
[data-theme="light"] #analyticsStreakVal { color: #c2410c !important; }
[data-theme="light"] #analyticsXpVal { color: #b45309 !important; }
[data-theme="light"] .diag-strong { color: #15803d; }

/* Timed-exam screen: keep the official layout, align colours with the app, fix button labels */
.tcs-btn-save, .tcs-btn-submit { color: #ffffff !important; }
.tcs-btn-save { background: #0b5cab; }
.tcs-btn-save:hover { background: #094c8f; }
[data-theme="light"] #practiceView .modern-opt-card.wrong-highlight .opt-badge { background: #be123c !important; }
[data-theme="light"] #practiceView .modern-opt-card.correct-highlight .opt-badge,
[data-theme="light"] #practiceView .modern-opt-card.revealed-correct .opt-badge { background: #15803d !important; }
[data-theme="light"] #practiceView .modern-opt-card span[style*="#10b981"] { color: #15803d !important; }
#practiceView .btn-action-star .star-ico { color: #b97d00; }

/* Phones and small tablets */
@media (max-width: 860px) {
  .app-navbar { height: auto; min-height: 56px; padding: 0.5rem 0.8rem; flex-wrap: wrap; gap: 0.5rem; }
  .app-navbar .app-brand { font-size: 1rem; }
  .app-navbar .brand-badge { display: none; }
  .nav-actions { flex-wrap: wrap; gap: 0.4rem; margin-left: auto; justify-content: flex-end; }
  .nav-actions .btn-analytics-nav span:last-child { display: none; }
  .nav-actions .btn-analytics-nav, .nav-actions .btn-theme-toggle { padding: 0.4rem 0.6rem; }
  .user-nav-group { gap: 0.4rem; }
  .dashboard-container { padding: 0 0.9rem; margin: 1rem auto; }
  .master-hero-section { grid-template-columns: 1fr; padding: 1.5rem 1.2rem; gap: 1.5rem; }
  .master-hero-title { font-size: 1.7rem; }
  .ana-tabs { overflow-x: auto; flex-wrap: nowrap; }
  .ana-tab-btn { white-space: nowrap; }
  .modal-dialog { width: 96%; max-height: 92vh; overflow-y: auto; }
}
@media (max-width: 520px) {
  .user-name-text { max-width: 70px; }
  .res-kpi-grid, .ana-kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Light-theme contrast for inline pastel colours that were chosen for the dark theme */
[data-theme="light"] [style*="#34d399"], [data-theme="light"] [style*="rgb(52, 211, 153)"] { color: #15803d !important; }
[data-theme="light"] [style*="#fbbf24"] { color: #b45309 !important; }
[data-theme="light"] [style*="#fb7185"], [data-theme="light"] [style*="#f87171"] { color: #be123c !important; }
[data-theme="light"] [style*="#38bdf8"] { color: #0369a1 !important; }
[data-theme="light"] [style*="#c084fc"], [data-theme="light"] [style*="#a5b4fc"] { color: #6d28d9 !important; }
[data-theme="light"] .ana-diag-critical { color: #b91c1c; }
[data-theme="light"] .ana-diag-concept_gap { color: #b45309; }
[data-theme="light"] .ana-diag-time_trap { color: #6d28d9; }
.tcs-badge-marked, .tcs-badge-ans-marked { color: #ffffff; }

@media (max-width: 860px) {
  .ana-grid-2 { grid-template-columns: minmax(0, 1fr); }
  .ana-card, .plan-card, .wt-card { min-width: 0; }
  .score-row { grid-template-columns: minmax(80px, 1fr) 1.4fr 56px; }
  .history-table-container { overflow-x: auto; }
  .tr-chart { min-width: 0; }
  .cal-grid { max-width: 100%; }
}
.analytics-container, .dashboard-container { width: 100%; min-width: 0; box-sizing: border-box; }
.ana-panel, .ana-card, .ana-card-title { min-width: 0; }
.ana-card-title { flex-wrap: wrap; gap: 0.4rem 0.8rem; }
[data-theme="light"] .res-pill-emerald { color: #15803d; background: #e3f4e6; border-color: #a7d9b0; }
[data-theme="light"] .res-pill-rose { color: #be123c; background: #fde8ec; border-color: #f5b5c2; }
[data-theme="light"] .res-pill-slate { color: #475569; background: #eef1f5; border-color: #cbd5e1; }
[data-theme="light"] .res-pill strong { color: inherit; }
[data-theme="light"] .pacing-badge.badge-green { color: #15803d; background: #e3f4e6; }
[data-theme="light"] .pacing-badge.badge-amber { color: #b45309; background: #fef3c7; }
[data-theme="light"] .pacing-badge.badge-slate { color: #475569; background: #eef1f5; }
@media (max-width: 860px) {
  .ana-mini-table, .ana-q-table { display: block; overflow-x: auto; max-width: 100%; }
  .ana-focus-row { flex-wrap: wrap; }
  .wt-top, .wt-foot { flex-wrap: wrap; }
}
[data-theme="light"] .rev-tab-badge { background: rgba(15, 23, 42, 0.1); color: inherit; }
[data-theme="light"] .rev-p-btn.p-wrong { color: #be123c; background: #fde8ec; }
[data-theme="light"] .rev-p-btn.p-skipped { color: #475569; background: #eef1f5; }
[data-theme="light"] .rev-p-btn.p-correct { color: #15803d; background: #e3f4e6; }
[data-theme="light"] .review-meta-chip { background: #f1f5f9; }
[data-theme="light"] .review-meta-chip[style*="10b981"], [data-theme="light"] .review-meta-chip.chip-fast { color: #15803d !important; }
[data-theme="light"] .res-ratio-legend, [data-theme="light"] .res-ratio-legend span { color: var(--text-muted); }
[data-theme="light"] .mistake-banner, [data-theme="light"] .rev-insight { color: #9f1239; }
[data-theme="light"] .res-hero-banner .res-pill span, [data-theme="light"] .res-hero-banner .res-pill { color: inherit; }
@media (max-width: 860px) { .ana-filter-bar { flex-wrap: wrap; } .ana-q-table { font-size: 0.8rem; } .review-q-card, .review-card { min-width: 0; } }
[data-theme="light"] .res-pill-muted { color: #475569; background: #eef1f5; border-color: #cbd5e1; }
[data-theme="light"] .res-pill-muted strong { color: inherit; }

/* Exam: submit summary + mock section headings */
.ss-dialog { max-width: 520px; }
.ss-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 0.6rem; margin-bottom: 1rem; }
.ss-cell { background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 10px; padding: 0.7rem; text-align: center; }
.ss-cell b { display: block; font-size: 1.5rem; color: var(--text-main); }
.ss-cell span { font-size: 0.74rem; color: var(--text-muted); font-weight: 600; }
.ss-cell.ok b { color: #15803d; }
.ss-cell.warn b { color: #b45309; }
.ss-warn { font-size: 0.88rem; color: var(--text-muted); line-height: 1.5; margin: 0 0 1.1rem; }
.ss-actions { display: flex; justify-content: flex-end; gap: 0.6rem; flex-wrap: wrap; }
.tcs-section-head { grid-column: 1 / -1; font-size: 0.74rem; font-weight: 700; color: #12355b; background: #e6eef7; border-left: 3px solid #0b5cab; padding: 0.3rem 0.5rem; margin: 0.35rem 0 0.1rem; border-radius: 2px; }
/* Accessibility: visible keyboard focus, reduced motion */
:focus-visible { outline: 2px solid #0b6fb8; outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } }
.review-insight-banner { color: var(--text-main); }

/* =========================================================
   DASHBOARD COMPLETION + TIDY (today row, quick stats, uniform cards)
   ========================================================= */
.today-row { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 1.25rem; margin-bottom: 2rem; }
.today-plan { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 1.2rem 1.3rem; box-shadow: var(--shadow-card); }
.today-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.8rem; }
.today-title { font-size: 1.05rem; font-weight: 800; color: var(--text-main); margin: 0; }
.today-link { background: none; border: none; color: var(--accent-indigo); font: inherit; font-size: 0.84rem; font-weight: 700; cursor: pointer; }
.today-link:hover { text-decoration: underline; }
.today-list { display: flex; flex-direction: column; gap: 0.6rem; }
.today-item { display: flex; align-items: center; gap: 0.8rem; padding: 0.7rem 0.8rem; border: 1px solid var(--border-color); border-radius: 12px; background: var(--bg-secondary); }
.today-icon { font-size: 1.3rem; width: 34px; text-align: center; flex: none; }
.today-main { flex: 1; min-width: 0; }
.today-item-title { font-weight: 700; font-size: 0.92rem; color: var(--text-main); }
.today-item-detail { font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; margin-top: 1px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.today-cta { flex: none; background: #0b5cab; color: #ffffff; border: 1px solid #094c8f; border-radius: 9px; padding: 0.45rem 0.85rem; font: inherit; font-size: 0.8rem; font-weight: 700; cursor: pointer; white-space: nowrap; }
.today-cta:hover { background: #094c8f; }
.quick-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.8rem; }
.qs-tile { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 14px; padding: 0.9rem 1rem; box-shadow: var(--shadow-card); display: flex; flex-direction: column; gap: 2px; }
.qs-label { font-size: 0.7rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); }
.qs-tile strong { font-size: 1.7rem; line-height: 1.15; color: var(--text-main); }
.qs-tile small { font-size: 0.76rem; color: var(--text-muted); }

/* Hero: keep the three buttons on one row */
.hero-cta-group { flex-wrap: wrap; gap: 0.7rem; }
.hero-btn-primary, .hero-btn-secondary { padding: 0.75rem 1.2rem; font-size: 0.9rem; white-space: nowrap; }

/* Mode cards: identical structure and spacing */
.master-mode-card { justify-content: flex-start; gap: 0; min-height: 300px; }
.master-mode-card .mode-card-body { flex: 1; display: flex; flex-direction: column; justify-content: flex-start; }
.master-mode-card .mode-icon { margin-bottom: 0.9rem; }
.master-mode-card .mode-desc { margin-bottom: 0.6rem; }
.master-mode-card .mode-action { margin-top: auto; }
.mode-link-btn { margin-top: 0.7rem; }
.section-header-row { margin: 0.4rem 0 1rem; }
.subject-fast-grid { margin-bottom: 2.5rem; }
.subject-fast-bar { height: 5px; }
[data-theme="light"] .subject-fast-bar { background: #e5eaf1; }
[data-theme="light"] .subject-fast-bar i { background: #0b6fb8; }
.subject-fast-card:hover .subject-fast-name { color: var(--accent-indigo); }

@media (max-width: 960px) { .today-row { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 520px) { .today-item { flex-wrap: wrap; } .today-cta { width: 100%; } .master-mode-card { min-height: 0; } }

/* Disabled buttons must stay readable */
#practiceView .practice-btn-left-group > button:disabled,
#practiceView #btnPracticePrev:disabled { background: #e8edf3 !important; color: #5b6b80 !important; border-color: #c5cfdb !important; opacity: 1; }
#practiceView #btnPracticeClear:disabled { color: #a05a5a !important; }
#practiceView #practicePalLegend .pal-legend-dot[style*="border-color"] { background: #94a3b8 !important; }
.tcs-btn-submit { background: #0e7490; }
.tcs-btn-submit:hover { background: #0b5f76; }

/* Practice: question order control */
.order-box { padding: 0 0.85rem 1rem; display: flex; flex-direction: column; gap: 0.3rem; }
.order-select { margin: 0 !important; width: 100%; }
.order-box label { font-size: 0.68rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); }

/* Score predictor */
.pr-card { padding-bottom: 1rem; }
.pc-pill { margin-left: auto; font-size: 0.72rem; font-weight: 800; padding: 3px 10px; border-radius: 99px; border: 1px solid transparent; }
.pc-low { background: #fef3c7; color: #92400e; border-color: #fcd34d; }
.pc-fair { background: #e0f2fe; color: #075985; border-color: #7dd3fc; }
.pc-good { background: #dcfce7; color: #166534; border-color: #86efac; }
.pr-hero { display: grid; grid-template-columns: minmax(180px, 0.6fr) 2fr; gap: 1.6rem; align-items: center; margin: 0.6rem 0 1rem; }
.pr-num { font-size: 4rem; font-weight: 900; line-height: 1; color: var(--text-main); }
.pr-sub { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; max-width: 190px; line-height: 1.35; }
.pr-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.8rem; }
.pr-chip { background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 10px; padding: 0.4rem 0.75rem; text-align: center; min-width: 78px; }
.pr-chip b { display: block; font-size: 1.1rem; color: var(--text-main); }
.pr-chip span { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; }
.pr-target { margin-top: 0.7rem; font-size: 0.9rem; color: var(--text-muted); }
.pr-target b { color: var(--text-main); }
.pr-chart-wrap { border-top: 1px dashed var(--border-color); padding-top: 0.9rem; }
.pr-chart-title { font-size: 0.82rem; font-weight: 700; color: var(--text-muted); }
.pr-line { fill: none; stroke: #0b6fb8; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.pr-dot { fill: #0b6fb8; stroke: var(--bg-card); stroke-width: 2; }
.pr-proj { fill: none; stroke: #0b6fb8; stroke-width: 2.5; stroke-dasharray: 6 5; opacity: 0.7; }
.pr-projdot { fill: #ffffff; stroke: #0b6fb8; stroke-width: 3; }
.pr-band { stroke: #0b6fb8; stroke-width: 6; stroke-linecap: round; opacity: 0.18; }

.wf-list { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 0.5rem; }
.wf-row { display: grid; grid-template-columns: minmax(120px, 1.3fr) 2fr 48px; gap: 0.2rem 0.7rem; align-items: center; }
.wf-label { font-size: 0.84rem; font-weight: 700; color: var(--text-main); }
.wf-bar { height: 9px; background: var(--border-color); border-radius: 99px; overflow: hidden; }
.wf-bar i { display: block; height: 100%; background: linear-gradient(90deg, #f59e0b, #dc2626); border-radius: 99px; }
.wf-val { text-align: right; font-weight: 800; font-size: 0.86rem; color: #b91c1c; font-variant-numeric: tabular-nums; }
.wf-tip { grid-column: 1 / -1; font-size: 0.76rem; color: var(--text-muted); line-height: 1.35; }
.pr-extra { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1rem; }
.pr-extra > div { flex: 1; min-width: 180px; background: var(--bg-primary); border-radius: 10px; padding: 0.6rem 0.8rem; }
.pr-extra b { font-size: 1.25rem; color: var(--text-main); display: block; }
.pr-extra span { font-size: 0.76rem; color: var(--text-muted); line-height: 1.35; }

.mt-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0.7rem; margin-top: 0.5rem; }
.mt-cell { background: var(--bg-primary); border-radius: 10px; padding: 0.7rem 0.85rem; display: flex; flex-direction: column; gap: 2px; }
.mt-cell span { font-size: 0.7rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); }
.mt-cell b { font-size: 1.35rem; color: var(--text-main); }
.mt-cell small { font-size: 0.74rem; color: var(--text-muted); line-height: 1.35; }
.mt-improve { margin-top: 0.9rem; font-size: 0.84rem; color: var(--text-main); }
.mt-improve ul { margin: 0.3rem 0 0 1.1rem; padding: 0; color: var(--text-muted); line-height: 1.55; }
.mt-set { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: flex-end; margin-top: 1rem; padding-top: 0.9rem; border-top: 1px dashed var(--border-color); }
.mt-set label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.74rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); }
.mt-set input { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px; padding: 0.5rem 0.65rem; font: inherit; font-size: 0.9rem; color: var(--text-main); text-transform: none; letter-spacing: 0; font-weight: 600; }
@media (max-width: 860px) { .pr-hero { grid-template-columns: 1fr; } .pr-num { font-size: 3.2rem; } .wf-row { grid-template-columns: 1fr 1.4fr 44px; } }
.pr-chart-wrap .tr-axis { font-size: 9px; }
.pr-chart-wrap .tr-chart { max-height: 190px; }

/* Code shown inside an answer option (e.g. SQL queries) */
pre.opt-code { margin: 0; padding: 0; background: transparent; border: none; box-shadow: none; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace; font-size: 0.9rem; line-height: 1.55; white-space: pre; overflow-x: auto; color: inherit; max-width: 100%; }
#practiceView #btnPracticeClear.is-retry { color: #0b5cab; border-color: #9bb2cc; background: #ffffff; }
#practiceView #btnPracticeClear.is-retry:hover:not(:disabled) { background: #e6f0fa !important; border-color: #0b5cab !important; color: #094c8f; }
.lb-tools { display: flex; align-items: center; gap: 0.7rem; flex: none; }
.lb-updated { font-size: 0.74rem; color: var(--text-muted); white-space: nowrap; }
.lb-refresh { background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-main); border-radius: 8px; padding: 0.35rem 0.7rem; font: inherit; font-size: 0.8rem; font-weight: 700; cursor: pointer; }
.lb-refresh:hover { background: var(--bg-card-hover); border-color: var(--accent-indigo); }
@media (max-width: 520px) { .lb-updated { display: none; } }
.sync-badge { font-size: 0.72rem; font-weight: 800; padding: 3px 9px; border-radius: 99px; border: 1px solid transparent; white-space: nowrap; }
.sync-ok { background: rgba(255, 255, 255, 0.14); color: #bbf7d0; border-color: rgba(187, 247, 208, 0.45); }
.sync-busy { background: rgba(255, 255, 255, 0.14); color: #bfdbfe; border-color: rgba(191, 219, 254, 0.45); }
.sync-bad { background: #fef3c7; color: #92400e; border-color: #f59e0b; cursor: help; }
@media (max-width: 860px) { .sync-badge { display: none; } }

/* Daily Aptitude & Maths */
.da-intro { font-size: 0.88rem; color: var(--text-muted); line-height: 1.55; margin: 0 0 0.9rem; }
.da-today { display: flex; justify-content: space-between; align-items: center; gap: 1rem; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 10px; padding: 0.6rem 0.9rem; margin-bottom: 1rem; font-size: 0.9rem; color: var(--text-main); }
.da-today-split { display: block; font-size: 0.76rem; color: var(--text-muted); }
.da-streak { font-weight: 800; color: #c2410c; white-space: nowrap; }
.da-hint { font-weight: 500; color: var(--text-muted); font-size: 0.78rem; }
.da-groups, .da-counts { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.da-group, .da-count { background: var(--bg-card); border: 1.5px solid var(--border-color); color: var(--text-main); border-radius: 10px; padding: 0.5rem 0.9rem; font: inherit; font-size: 0.86rem; font-weight: 700; cursor: pointer; }
.da-group:hover, .da-count:hover { border-color: #0d9488; }
.da-group.active, .da-count.active { background: #0d9488; border-color: #0d9488; color: #ffffff; }
.da-subjects { display: flex; flex-direction: column; gap: 0.4rem; }
.da-subj-opt { display: flex; align-items: center; gap: 0.6rem; border: 1px solid var(--border-color); border-radius: 10px; padding: 0.55rem 0.8rem; cursor: pointer; background: var(--bg-card); }
.da-subj-opt:hover { border-color: #0d9488; }
.da-subj-opt input { width: 17px; height: 17px; accent-color: #0d9488; }
.da-subj-name { font-weight: 700; font-size: 0.9rem; color: var(--text-main); flex: 1; }
.da-subj-meta { font-size: 0.76rem; color: var(--text-muted); }
.da-check { display: flex; align-items: center; gap: 0.55rem; font-size: 0.86rem; color: var(--text-main); margin: 0.6rem 0; cursor: pointer; }
.da-check input { accent-color: #0d9488; width: 16px; height: 16px; }
.da-preview { background: #e6f7f5; border: 1px solid #99d9d2; color: #115e59; border-radius: 10px; padding: 0.65rem 0.9rem; font-size: 0.88rem; margin-top: 0.4rem; }
.da-warn { color: #b45309; font-weight: 700; }
#daStart:disabled { opacity: 0.5; cursor: not-allowed; }
.da-card-bar { height: 6px; background: var(--border-color); border-radius: 99px; overflow: hidden; margin-top: 0.7rem; }
.da-card-bar i { display: block; height: 100%; background: #0d9488; border-radius: 99px; transition: width 0.4s ease; }

.pal-track-head { grid-column: 1 / -1; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; padding: 0.3rem 0.5rem; margin: 0.35rem 0 0.1rem; border-radius: 4px; }
.pal-track-ga { background: #fff4e0; color: #9a5b00; border-left: 3px solid #f59e0b; }
.pal-track-maths { background: #e6f7f5; color: #115e59; border-left: 3px solid #0d9488; }
.q-badge-track { font-weight: 800 !important; }
.q-track-ga { background: #fff4e0 !important; color: #9a5b00 !important; border-color: #f5c36b !important; }
.q-track-maths { background: #e6f7f5 !important; color: #115e59 !important; border-color: #8fd3cb !important; }

.da-track-row { padding: 0.65rem 0.8rem; border-radius: 10px; border: 1px solid var(--border-color); background: var(--bg-card); cursor: pointer; margin-bottom: 0.5rem; }
.da-track-row:hover { border-color: #0d9488; }
.da-track-row.active { border-color: #0d9488; box-shadow: 0 0 0 2px rgba(13, 148, 136, 0.15); }
.da-track-top { display: flex; justify-content: space-between; font-size: 0.84rem; font-weight: 800; color: var(--text-main); }
.da-track-count { color: var(--text-muted); font-weight: 700; }
.da-track-bar { height: 5px; background: var(--border-color); border-radius: 99px; overflow: hidden; margin: 0.45rem 0 0.3rem; }
.da-track-bar i { display: block; height: 100%; background: #0d9488; border-radius: 99px; }
.da-track-sub { font-size: 0.72rem; color: var(--text-muted); }

.dr-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0.7rem; }
.dr-track { background: var(--bg-secondary); border-radius: 10px; padding: 0.7rem 0.9rem; }
.dr-name { font-size: 0.82rem; font-weight: 800; color: var(--text-muted); }
.dr-big { font-size: 1.8rem; font-weight: 900; color: var(--text-main); line-height: 1.2; }
.dr-big small { font-size: 0.9rem; color: var(--text-muted); font-weight: 600; margin-left: 4px; }
.dr-sub { font-size: 0.76rem; color: var(--text-muted); }
.da-subj-opt { display: flex !important; align-items: center; margin: 0; }
.da-subj-meta { margin-left: auto; white-space: nowrap; }

/* Answer options that are one quarter of a shared picture (e.g. four diagrams drawn in a single image) */
.opt-sprite { display: block; width: min(100%, 360px); aspect-ratio: 300 / 269; background-repeat: no-repeat; background-size: 200% 200%; background-color: #ffffff; border-radius: 6px; }
.q-edit-marks { background: #fff7e6; color: #92400e; border: 1px solid #f5c36b; border-radius: 8px; padding: 0.25rem 0.7rem; font: inherit; font-size: 0.76rem; font-weight: 700; cursor: pointer; }
.q-edit-marks:hover { background: #fdecc4; }
.q-edit-marks.hidden { display: none; }
.q-edit-marks { padding: 0.12rem 0.5rem; font-size: 0.72rem; line-height: 1.4; border-radius: 6px; }
.tcs-q-number-row { display: flex; align-items: center; gap: 0.6rem; }

/* ---- Rules for class names the markup already uses (previously unstyled) ---- */
.uc-profile-card-top { display: flex; align-items: center; gap: 0.75rem; }
.uc-profile-avatar { width: 44px; height: 44px; flex: none; border-radius: 12px; background: rgba(100, 116, 139, 0.14); font-size: 1.5rem; display: flex; align-items: center; justify-content: center; }
.uc-profile-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; font-size: 0.78rem; color: var(--text-muted); }
.uc-profile-stats span { display: block; font-weight: 600; }
.uc-profile-stats strong { display: block; font-size: 1rem; color: var(--text-main); }
.uc-profile-actions { display: flex; gap: 0.5rem; }
.uc-diag-item .val { font-size: 1.15rem; font-weight: 800; color: var(--text-main); }
.uc-diag-item .lbl { font-size: 0.72rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.btn-icon { background: none; border: none; cursor: pointer; line-height: 1; padding: 0.2rem 0.4rem; border-radius: 8px; }
.btn-icon:hover { background: rgba(100, 116, 139, 0.15); }
.btn-close-modal { font-size: 1.5rem; }
.modal-dialog-medium { width: min(560px, calc(100vw - 2rem)); }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.75rem; }
.ct-label { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); }
.master-hero-content { position: relative; }
.weak-topic-pill { display: flex; flex-direction: column; gap: 0.35rem; }
.weak-topic-stats { display: flex; flex-wrap: wrap; gap: 0.6rem; font-size: 0.78rem; color: var(--text-muted); }
.da-wrap { display: flex; flex-direction: column; gap: 1rem; }
.da-subj { accent-color: #0d9488; }
.da-track-name { font-weight: 700; color: var(--text-main); }
.pr-score { display: flex; flex-direction: column; }
.pr-range { font-size: 0.85rem; color: var(--text-muted); }
.cal-cell.l0 { background: var(--border-color); }
.adm-panel { margin-top: 1rem; }

/* ---- Analysis category colours: one colour + one symbol per category, readable on the light page ---- */
:root {
  --cat-weak: #dc2626;        --cat-weak-ink: #ffffff;
  --cat-rev: #f59e0b;         --cat-rev-ink: #231500;
  --cat-learn: #2563eb;       --cat-learn-ink: #ffffff;
  --cat-master: #15803d;      --cat-master-ink: #ffffff;
  --cat-low: #7c3aed;         --cat-low-ink: #ffffff;
  --cat-unseen: #e2e8f0;      --cat-unseen-ink: #334155;
}
.ana-badge { display: inline-flex; align-items: center; gap: 0.3rem; border: 1px solid transparent; }
.ana-badge::before { font-size: 0.7em; line-height: 1; }
.ana-st-weak { background: var(--cat-weak); color: var(--cat-weak-ink); }
.ana-st-weak::before { content: '●'; }
.ana-st-needs_revision { background: var(--cat-rev); color: var(--cat-rev-ink); }
.ana-st-needs_revision::before { content: '▲'; }
.ana-st-learning { background: var(--cat-learn); color: var(--cat-learn-ink); }
.ana-st-learning::before { content: '◆'; }
.ana-st-strong, .ana-st-mastered { background: var(--cat-master); color: var(--cat-master-ink); }
.ana-st-strong::before, .ana-st-mastered::before { content: '✓'; }
.ana-st-low_data { background: var(--cat-low); color: var(--cat-low-ink); }
.ana-st-low_data::before { content: '…'; }
.ana-st-untested, .ana-st-unseen { background: var(--cat-unseen); color: var(--cat-unseen-ink); border-color: #94a3b8; }
.ana-st-untested::before, .ana-st-unseen::before { content: '○'; }
/* legend row shown above topic tables */
.cat-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 0.7rem; align-items: center; margin: 0.2rem 0 0.8rem; font-size: 0.78rem; color: var(--text-muted); }
.cat-legend .ana-badge { font-size: 0.72rem; padding: 0.1rem 0.5rem; }
.cat-legend em { font-style: normal; margin-right: 0.35rem; }

/* ---- Mistake reasons ("why did you miss it") and the marks-leak card ---- */
.why-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; margin: 0.4rem 0 0.7rem; font-size: 0.82rem; color: var(--text-muted); font-weight: 600; }
.why-chip { border: 1.5px solid currentColor; background: #fff; border-radius: 9999px; padding: 0.2rem 0.7rem; font: inherit; font-size: 0.78rem; font-weight: 700; cursor: pointer; }
.why-chip.why-concept { color: #6d28d9; } .why-chip.why-silly { color: #0e7490; } .why-chip.why-time { color: #b45309; } .why-chip.why-guess { color: #475569; }
.why-chip:hover { background: #f1f5f9; }
.why-chip.on.why-concept { background: #6d28d9; color: #fff; } .why-chip.on.why-silly { background: #0e7490; color: #fff; }
.why-chip.on.why-time { background: #b45309; color: #fff; } .why-chip.on.why-guess { background: #475569; color: #fff; }
.why-bar { display: grid; grid-template-columns: 7.5rem 1fr 2rem; align-items: center; gap: 0.6rem; margin: 0.35rem 0; font-size: 0.84rem; }
.why-name { font-weight: 700; color: var(--text-main); }
.why-track { height: 10px; border-radius: 9999px; background: #e2e8f0; overflow: hidden; }
.why-fill { display: block; height: 100%; border-radius: 9999px; }
.why-fill.why-concept { background: #6d28d9; } .why-fill.why-silly { background: #0e7490; } .why-fill.why-time { background: #b45309; } .why-fill.why-guess { background: #475569; }
.why-n { text-align: right; font-weight: 800; }
.tr-status { width: 11px; height: 11px; }
.ana-dot-weak { background: var(--cat-weak); }
.ana-dot-needs_revision { background: var(--cat-rev); border-radius: 2px; }
.ana-dot-strong { background: var(--cat-master); }
.ana-dot-low_data { background: var(--cat-low); }
.ana-dot-untested { background: var(--cat-unseen); border: 1.5px solid #94a3b8; }

/* ---- Subjects explorer (coverage + topic tree in one) ---- */
.sx { margin-top: 0.4rem; border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; background: var(--bg-card); }
.sx-row { display: grid; grid-template-columns: minmax(180px, 1fr) 56px 150px 150px 128px 104px; align-items: center; column-gap: 0.8rem; padding: 0.55rem 0.9rem; border-top: 1px solid var(--border-color); cursor: default; font-size: 0.86rem; }
.sx-row[onclick] { cursor: pointer; }
.sx-row:hover { background: rgba(100, 116, 139, 0.08); }
.sx-head { border-top: 0; background: rgba(100, 116, 139, 0.12); font-size: 0.7rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); cursor: default; }
.sx-head:hover { background: rgba(100, 116, 139, 0.12); }
.sx-name { display: flex; align-items: center; gap: 0.5rem; min-width: 0; flex-wrap: wrap; }
.sx-label { font-weight: 600; min-width: 0; overflow-wrap: anywhere; }
.sx-subject { background: rgba(100, 116, 139, 0.06); }
.sx-subject .sx-label { font-weight: 800; font-size: 0.95rem; }
.sx-chapter .sx-name { padding-left: 1.5rem; }
.sx-chapter .sx-label { font-weight: 700; }
.sx-topic .sx-name { padding-left: 3rem; }
.sx-topic .sx-label { font-weight: 500; color: var(--text-muted); }
.sx-sub { font-size: 0.72rem; color: var(--text-muted); font-weight: 600; }
.sx-start { color: #b45309; }
.sx-chev { flex: none; width: 0; height: 0; border-left: 6px solid var(--text-muted); border-top: 5px solid transparent; border-bottom: 5px solid transparent; transition: transform 0.15s; }
.sx-chev.none { visibility: hidden; }
.tr-node.open > .sx-row .sx-chev { transform: rotate(90deg); }
.sx-marks { font-weight: 800; color: var(--text-main); text-align: right; font-variant-numeric: tabular-nums; }
.sx-prog { display: flex; align-items: center; gap: 0.5rem; }
.sx-bar { flex: 1; display: flex; height: 8px; border-radius: 9999px; overflow: hidden; background: rgba(148, 163, 184, 0.3); border: 1px solid rgba(148, 163, 184, 0.5); }
.sx-bar .m { background: var(--cat-master); }
.sx-bar .t { background: var(--cat-learn); }
.sx-count { min-width: 3.4rem; text-align: right; font-size: 0.76rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.sx-action { text-align: right; }
.sx-head .sx-marks, .sx-head .sx-action { text-align: right; }
.sx .tr-children > div { padding-left: 0; }
@media (max-width: 900px) {
  .sx-row { grid-template-columns: minmax(130px, 1fr) 120px 96px; row-gap: 0.3rem; }
  .sx-marks, .sx-prog, .sx-action { display: none; }
  .sx-head .sx-prog { display: none; }
}
@media (max-width: 560px) { .sx-row { grid-template-columns: 1fr 96px; } .sx-acc { display: none; } .sx-topic .sx-name { padding-left: 2rem; } }

/* =========================================================
   INTERACTION POLISH: everything clickable looks and feels clickable
   ========================================================= */
.qs-tile { font: inherit; text-align: left; color: inherit; cursor: pointer; position: relative; transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease; }
.qs-tile::after { content: "→"; position: absolute; top: 0.8rem; right: 0.9rem; font-weight: 800; color: var(--text-muted); opacity: 0; transform: translateX(-4px); transition: opacity 0.18s ease, transform 0.18s ease; }
.qs-tile:hover { transform: translateY(-3px); border-color: #0b6fb8; box-shadow: 0 10px 24px rgba(11, 92, 171, 0.16); }
.qs-tile:hover::after, .qs-tile:focus-visible::after { opacity: 1; transform: none; color: #0b5cab; }
.qs-tile:active { transform: translateY(0) scale(0.98); }

.mode-card { transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.mode-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(11, 40, 80, 0.18); }
.mode-card:active { transform: translateY(-1px) scale(0.99); }
.mode-card:focus-visible { outline: 3px solid #0b6fb8; outline-offset: 3px; }

.hero-momentum-card { cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.hero-momentum-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(0, 0, 0, 0.3); }
.hero-momentum-card:active { transform: scale(0.99); }
.streak-badge, .app-brand { cursor: pointer; transition: transform 0.15s ease, filter 0.15s ease; }
.streak-badge:hover, .app-brand:hover { transform: translateY(-1px); filter: brightness(1.12); }
.streak-badge:active, .app-brand:active { transform: scale(0.96); }

.today-item.is-link { cursor: pointer; transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease; }
.today-item.is-link:hover { border-color: #0b6fb8; background: var(--bg-card); box-shadow: 0 6px 16px rgba(11, 92, 171, 0.12); transform: translateX(3px); }
.today-item.is-link:active { transform: scale(0.99); }

/* buttons: a small press and a lift, in every screen */
button:not(:disabled):active, .btn-primary:not(:disabled):active, .btn-secondary:not(:disabled):active { transform: translateY(1px) scale(0.98); }
.btn-primary:not(:disabled):hover, .hero-btn-primary:hover, .hero-btn-secondary:hover, .today-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 14px rgba(11, 92, 171, 0.25); }
button:disabled { cursor: not-allowed; }
.practice-opt, .modern-opt-card { transition: transform 0.12s ease, border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease; }
.modern-opt-card:hover { transform: translateX(3px); box-shadow: 0 4px 12px rgba(11, 92, 171, 0.12); }
.modern-opt-card:active { transform: scale(0.995); }

/* scroll-reveal for dashboard cards (skipped for reduced motion in ui-polish.js) */
.ui-reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.45s ease, transform 0.45s ease; }
.ui-reveal.ui-in { opacity: 1; transform: none; }
.mode-card.ui-reveal.ui-in:hover { transform: translateY(-4px); }
@media (prefers-reduced-motion: reduce) { .ui-reveal { opacity: 1; transform: none; } }

/* Dialogs taller than the window scroll instead of being cut off (title and buttons stay reachable) */
.modal-backdrop { padding: 1rem; box-sizing: border-box; }
.modal-dialog { max-height: calc(100vh - 2rem); max-height: calc(100dvh - 2rem); overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
.modal-dialog > .modal-header { position: sticky; top: 0; z-index: 2; }


/* "Loading questions…" while a session's text is fetched */
#contentLoading { position: fixed; inset: 0; z-index: 5000; display: none; align-items: center; justify-content: center; background: rgba(11, 15, 25, 0.45); backdrop-filter: blur(2px); }
#contentLoading.show { display: flex; }
.content-loading-card { background: var(--bg-card, #fff); color: var(--text-main, #111); padding: 1rem 1.6rem; border-radius: 12px; font-weight: 700; box-shadow: 0 12px 34px rgba(0, 0, 0, 0.3); display: flex; align-items: center; gap: 0.7rem; }
.content-loading-spin { width: 18px; height: 18px; border: 3px solid #cbd5e1; border-top-color: #0b5cab; border-radius: 50%; animation: cl-spin 0.8s linear infinite; }
@keyframes cl-spin { to { transform: rotate(360deg); } }


/* Phones: the practice top bar was wider than the screen, which pushed Full screen, Palette and Finish out of reach.
   The breadcrumb (it repeats the subject, chapter and topic already shown on the question) is hidden, Calculator and
   Full screen show as icons, and the bar wraps onto a second row instead of running off the screen. */
@media (max-width: 720px) {
  #practiceView .practice-bar { height: auto !important; flex-wrap: wrap; row-gap: 0.35rem; padding: 0.4rem 0.85rem !important; }
  #practiceView .practice-bar-left { display: none; }
  #practiceView .practice-bar-right { margin-left: auto; gap: 0.35rem; }
  #btnHeaderCalc > span, #btnHeaderFullscreen > span:last-child { display: none; }
}