/* ============================================
   Malayalam Quiz App — Design System
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Malayalam:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============================================
   CSS Variables / Design Tokens
   ============================================ */
:root {
  /* Colors — Dark Theme */
  --bg-primary: #050816;
  --bg-secondary: #0a0f2e;
  --bg-tertiary: #111640;
  --bg-card: rgba(17, 22, 64, 0.6);
  --bg-card-hover: rgba(25, 32, 85, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);

  /* Accent Colors */
  --accent-primary: #f6a623;
  --accent-primary-light: #ffc857;
  --accent-primary-dark: #d48b0f;
  --accent-secondary: #6c63ff;
  --accent-secondary-light: #8b83ff;
  --accent-tertiary: #00d4aa;
  --accent-danger: #ff4757;
  --accent-success: #2ed573;
  --accent-warning: #ffa502;
  --accent-info: #1e90ff;

  /* Text Colors */
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0c0;
  --text-tertiary: #6b6b8d;
  --text-accent: #f6a623;
  --text-on-accent: #050816;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #f6a623 0%, #ff6b35 100%);
  --gradient-secondary: linear-gradient(135deg, #6c63ff 0%, #3b82f6 100%);
  --gradient-tertiary: linear-gradient(135deg, #00d4aa 0%, #00b4d8 100%);
  --gradient-dark: linear-gradient(180deg, #050816 0%, #0a0f2e 50%, #111640 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
  --gradient-hero: radial-gradient(ellipse at 20% 50%, rgba(108,99,255,0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at 80% 20%, rgba(246,166,35,0.1) 0%, transparent 50%),
                   radial-gradient(ellipse at 50% 80%, rgba(0,212,170,0.08) 0%, transparent 50%);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(246, 166, 35, 0.3);
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow-accent: 0 0 20px rgba(246, 166, 35, 0.3);
  --shadow-glow-secondary: 0 0 20px rgba(108, 99, 255, 0.3);

  /* Typography */
  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', 'Noto Sans Malayalam', sans-serif;
  --font-malayalam: 'Noto Sans Malayalam', sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index layers */
  --z-base: 1;
  --z-dropdown: 100;
  --z-modal: 1000;
  --z-toast: 2000;
  --z-tooltip: 3000;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background ambient effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-primary-light);
}

img {
  max-width: 100%;
  display: block;
}

input, select, textarea, button {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   Utility Classes
   ============================================ */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-accent { color: var(--accent-primary); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }

.ml-text {
  font-family: var(--font-malayalam);
  line-height: 1.8;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.w-full { width: 100%; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

/* ============================================
   Layout
   ============================================ */
.app-container {
  position: relative;
  z-index: var(--z-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page {
  display: none;
  flex: 1;
  animation: pageIn 0.4s ease forwards;
  padding: var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.page.active {
  display: flex;
  flex-direction: column;
}

@keyframes pageIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Header / Navbar
   ============================================ */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: rgba(5, 8, 22, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
}

.navbar-brand .brand-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.navbar-user .user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  background: var(--gradient-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: white;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  text-decoration: none;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::after {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-on-accent);
  box-shadow: var(--shadow-sm), 0 0 15px rgba(246, 166, 35, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow-accent);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow-secondary);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  background: var(--bg-glass-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 16px;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.btn-danger {
  background: linear-gradient(135deg, #ff4757 0%, #ff3838 100%);
  color: white;
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 20px rgba(255, 71, 87, 0.3);
}

.btn-success {
  background: linear-gradient(135deg, #2ed573 0%, #17c553 100%);
  color: white;
}

.btn-success:hover {
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--border-radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
  border-radius: var(--border-radius-lg);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--border-radius-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.card-glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.card-elevated {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-normal);
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(246, 166, 35, 0.1);
  background: rgba(255, 255, 255, 0.06);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%23a0a0c0'%3E%3Cpath d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.85rem;
  line-height: 1.5;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-error {
  color: var(--accent-danger);
  font-size: 0.8rem;
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.form-hint {
  color: var(--text-tertiary);
  font-size: 0.8rem;
  margin-top: var(--space-xs);
}

/* ============================================
   Landing Page
   ============================================ */
.landing-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  text-align: center;
  gap: var(--space-xl);
  padding: var(--space-2xl) var(--space-lg);
}

.landing-icon {
  width: 100px;
  height: 100px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow-accent);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.landing-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
}

.landing-title .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 500px;
  font-family: var(--font-malayalam);
  line-height: 1.8;
}

.landing-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

.landing-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-xl);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   Auth Pages (Login / Register)
   ============================================ */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  padding: var(--space-xl);
}

.auth-card {
  width: 100%;
  max-width: 480px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-xl);
  padding: var(--space-2xl);
  animation: slideUp 0.5s ease forwards;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.auth-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-footer a {
  color: var(--accent-primary);
  cursor: pointer;
  font-weight: 500;
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard-header {
  margin-bottom: var(--space-2xl);
}

.dashboard-header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.dashboard-header p {
  color: var(--text-secondary);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.stat-card .stat-icon.gold { background: rgba(246, 166, 35, 0.15); }
.stat-card .stat-icon.purple { background: rgba(108, 99, 255, 0.15); }
.stat-card .stat-icon.teal { background: rgba(0, 212, 170, 0.15); }
.stat-card .stat-icon.red { background: rgba(255, 71, 87, 0.15); }

.stat-card .stat-info h3 {
  font-size: 1.5rem;
  font-weight: 800;
}

.stat-card .stat-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ============================================
   Quiz Cards
   ============================================ */
.quiz-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.quiz-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-lg);
}

.quiz-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
}

.quiz-card-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.quiz-card-portion {
  font-family: var(--font-malayalam);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.quiz-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.quiz-card-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--border-radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.badge-live {
  background: rgba(46, 213, 115, 0.15);
  color: var(--accent-success);
  border: 1px solid rgba(46, 213, 115, 0.3);
  animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% { box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.3); }
  50% { box-shadow: 0 0 0 6px rgba(46, 213, 115, 0); }
}

.badge-upcoming {
  background: rgba(30, 144, 255, 0.15);
  color: var(--accent-info);
  border: 1px solid rgba(30, 144, 255, 0.3);
}

.badge-closed {
  background: rgba(160, 160, 192, 0.1);
  color: var(--text-tertiary);
  border: 1px solid rgba(160, 160, 192, 0.2);
}

.badge-published {
  background: rgba(246, 166, 35, 0.15);
  color: var(--accent-primary);
  border: 1px solid rgba(246, 166, 35, 0.3);
}

.badge-completed {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(108, 99, 255, 0.3);
}

/* ============================================
   Quiz Taking Page
   ============================================ */
.quiz-page-container {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

/* Timer */
.quiz-timer-bar {
  position: sticky;
  top: 65px;
  z-index: 10;
  background: rgba(5, 8, 22, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--space-md) 0;
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.quiz-timer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.quiz-timer-display {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.quiz-timer-display.warning {
  color: var(--accent-warning);
  animation: blink 1s ease-in-out infinite;
}

.quiz-timer-display.danger {
  color: var(--accent-danger);
  animation: blink 0.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.quiz-progress {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-full);
  transition: width 1s linear;
}

.quiz-progress-fill.warning {
  background: linear-gradient(135deg, #ffa502, #ff6348);
}

.quiz-progress-fill.danger {
  background: linear-gradient(135deg, #ff4757, #ff3838);
}

/* Question Navigation Dots */
.quiz-nav-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.quiz-nav-dot {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.quiz-nav-dot:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.quiz-nav-dot.active {
  background: var(--gradient-primary);
  color: var(--text-on-accent);
  border-color: transparent;
  transform: scale(1.1);
}

.quiz-nav-dot.answered {
  background: rgba(108, 99, 255, 0.2);
  border-color: var(--accent-secondary);
  color: var(--accent-secondary-light);
}

/* Question Card */
.question-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-xl);
  padding: var(--space-2xl);
  animation: fadeInQuestion 0.3s ease forwards;
}

@keyframes fadeInQuestion {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.question-number {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.question-text {
  font-family: var(--font-malayalam);
  font-size: 1.15rem;
  line-height: 2;
  color: var(--text-primary);
  margin-bottom: var(--space-xl);
  font-weight: 500;
}

/* Option Cards */
.options-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.option-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}

.option-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.option-card.selected {
  background: rgba(108, 99, 255, 0.1);
  border-color: var(--accent-secondary);
  box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.option-card input[type="radio"] {
  display: none;
}

.option-letter {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition-normal);
  flex-shrink: 0;
}

.option-card.selected .option-letter {
  background: var(--gradient-secondary);
  color: white;
}

.option-text {
  font-family: var(--font-malayalam);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
}

/* Answer Key Styles */
.option-card.correct {
  background: rgba(46, 213, 115, 0.08);
  border-color: var(--accent-success);
}

.option-card.correct .option-letter {
  background: linear-gradient(135deg, #2ed573, #17c553);
  color: white;
}

.option-card.wrong {
  background: rgba(255, 71, 87, 0.08);
  border-color: var(--accent-danger);
}

.option-card.wrong .option-letter {
  background: linear-gradient(135deg, #ff4757, #ff3838);
  color: white;
}

/* Quiz Actions */
.quiz-actions {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-xl);
  gap: var(--space-md);
}

/* ============================================
   Results & Score Display
   ============================================ */
.score-reveal {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  animation: scoreIn 0.8s ease forwards;
}

@keyframes scoreIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.score-circle {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  margin: 0 auto var(--space-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.score-circle::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  padding: 4px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.score-circle .score-value {
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.score-circle .score-total {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

.score-message {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.score-detail {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   Leaderboard
   ============================================ */
.leaderboard-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 var(--space-sm);
}

.leaderboard-table th {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-tertiary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.leaderboard-table td {
  padding: var(--space-md);
  background: var(--bg-card);
  font-size: 0.9rem;
}

.leaderboard-table tr td:first-child {
  border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

.leaderboard-table tr td:last-child {
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.leaderboard-rank {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.rank-1 {
  background: linear-gradient(135deg, #f6a623, #ff8c00);
  color: white;
}

.rank-2 {
  background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
  color: white;
}

.rank-3 {
  background: linear-gradient(135deg, #cd7f32, #a0652f);
  color: white;
}

.rank-other {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.leaderboard-name {
  font-weight: 600;
}

.leaderboard-parish {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.leaderboard-score {
  font-weight: 700;
  font-size: 1.1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   Admin Tabs
   ============================================ */
.tabs {
  display: flex;
  gap: 2px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius-md);
  padding: 4px;
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}

.tab-btn {
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  background: var(--bg-tertiary);
  color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

.tab-content {
  display: none;
  animation: tabIn 0.3s ease forwards;
}

.tab-content.active {
  display: block;
}

@keyframes tabIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Admin Table (Quiz Management)
   ============================================ */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9rem;
}

.data-table thead th {
  text-align: left;
  padding: var(--space-md);
  color: var(--text-tertiary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table tbody td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.data-table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.data-table .actions-cell {
  display: flex;
  gap: var(--space-sm);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: toastIn 0.3s ease forwards;
  min-width: 280px;
  max-width: 400px;
}

.toast.success { border-left: 3px solid var(--accent-success); }
.toast.error { border-left: 3px solid var(--accent-danger); }
.toast.info { border-left: 3px solid var(--accent-info); }
.toast.warning { border-left: 3px solid var(--accent-warning); }

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast.removing {
  animation: toastOut 0.3s ease forwards;
}

@keyframes toastOut {
  to {
    opacity: 0;
    transform: translateX(40px);
  }
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-xl);
  max-width: 500px;
  width: 100%;
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

/* ============================================
   Empty States
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--text-secondary);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.empty-state p {
  font-size: 0.9rem;
  max-width: 360px;
  margin: 0 auto;
}

/* ============================================
   JSON Preview
   ============================================ */
.json-preview {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.8rem;
  color: var(--text-secondary);
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================
   Animations
   ============================================ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--border-radius-sm);
}

/* Confetti effect */
.confetti-piece {
  position: fixed;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  z-index: var(--z-toast);
  pointer-events: none;
  animation: confettiFall 3s ease-in forwards;
}

@keyframes confettiFall {
  0% {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translateY(100vh) rotate(720deg);
  }
}

/* ============================================
   Responsive
   ============================================ */
/* ============================================
   Mobile Responsive — 768px (Tablet)
   ============================================ */
@media (max-width: 768px) {
  .page {
    padding: var(--space-md);
  }

  /* ---- Navbar ---- */
  .navbar {
    padding: var(--space-sm) var(--space-md);
    flex-wrap: nowrap;
  }

  .navbar-brand > div > div:last-child {
    display: none; /* hide "Nedumangad Forane" subtitle */
  }

  .navbar-actions {
    gap: var(--space-sm);
  }

  .navbar-countdown {
    font-size: 0.7rem !important;
    padding: 3px 8px !important;
    gap: 2px !important;
  }

  /* Hide the user name text, keep avatar */
  #nav-user-name {
    display: none;
  }

  /* Hide "Dashboard" nav button text on narrow screens */
  #nav-btn-dashboard {
    font-size: 0;
    padding: 6px 10px;
  }
  #nav-btn-dashboard::before {
    content: '🏠';
    font-size: 1rem;
  }

  #nav-btn-logout {
    font-size: 0.75rem;
    padding: 6px 10px;
  }

  /* ---- Auth / Forms ---- */
  .auth-card {
    padding: var(--space-lg);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  /* ---- Landing ---- */
  .landing-hero {
    padding: var(--space-xl) var(--space-md);
  }

  .landing-stats {
    gap: var(--space-md);
    flex-wrap: wrap;
  }

  .stat-value {
    font-size: 1.3rem;
  }

  /* ---- Dashboard ---- */
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  /* ---- Chapter detail page: collapse 2-col layout to single column ---- */
  .learn-layout {
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: unset !important;
    gap: var(--space-lg) !important;
  }

  .learn-sidebar {
    width: 100% !important;
  }

  .learn-main-panel {
    width: 100% !important;
  }

  /* ---- Tabs — scrollable pill row ---- */
  .tabs {
    gap: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 4px;
    flex-wrap: nowrap;
  }
  .tabs::-webkit-scrollbar { display: none; }

  .tab-btn {
    padding: 7px 11px;
    font-size: 0.75rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* ---- Self Study split layout — stack vertically on mobile ---- */
  .learn-split-layout {
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: unset !important;
    gap: 0 !important;
    min-height: unset !important;
  }

  .books-list {
    border-right: none !important;
    border-bottom: 1px solid var(--border-subtle);
    padding-right: 0 !important;
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-md);
    width: 100% !important;
  }

  /* Mobile panel toggling */
  .learn-split-layout.chapters-shown .books-list {
    display: none !important;
  }

  .learn-split-layout.chapters-shown .chapters-view-container {
    display: block !important;
  }

  .chapters-view-container {
    width: 100% !important;
  }

  .mobile-back-btn {
    display: inline-flex !important;
  }

  /* ---- Quiz page ---- */
  .question-card {
    padding: var(--space-md);
  }

  .options-grid {
    grid-template-columns: 1fr !important;
  }

  .option-card {
    padding: var(--space-md) !important;
  }

  .quiz-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .quiz-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .quiz-timer-inner {
    flex-wrap: wrap;
  }

  /* ---- Score / Result ---- */
  .score-circle {
    width: 140px;
    height: 140px;
  }

  .score-circle .score-value {
    font-size: 2.5rem;
  }

  /* ---- Tables ---- */
  .leaderboard-table,
  .data-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* ---- Toast ---- */
  .toast-container {
    right: var(--space-md);
    left: var(--space-md);
  }

  .toast {
    min-width: auto;
    max-width: none;
  }

  /* ---- Modal ---- */
  .modal {
    padding: var(--space-lg);
    margin: var(--space-md);
    max-height: 90vh;
    overflow-y: auto;
  }
}

/* ============================================
   Mobile Responsive — 480px (Phone)
   ============================================ */
@media (max-width: 480px) {
  /* ---- Navbar ---- */
  .navbar-brand .brand-icon {
    width: 30px;
    height: 30px;
    font-size: 0.9rem;
  }

  .navbar-brand > div > div:first-child {
    font-size: 0.85rem !important;
  }

  /* ---- Landing ---- */
  .landing-title {
    font-size: 1.75rem;
  }

  .landing-actions {
    flex-direction: column;
    width: 100%;
  }

  .landing-actions .btn {
    width: 100%;
  }

  /* Countdown timer boxes — fit in a row on tiny screens */
  #exam-countdown [style*="min-width: 80px"] {
    min-width: 60px !important;
    padding: 8px 4px !important;
  }

  #exam-countdown [style*="font-size: 2.25rem"] {
    font-size: 1.6rem !important;
  }

  /* ---- Quiz navigation dots ---- */
  .quiz-nav-dot {
    width: 28px;
    height: 28px;
    font-size: 0.65rem;
  }

  /* ---- Chapter cards — full width on phones ---- */
  #chapters-view-container [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }

  /* ---- Section/age pill in dashboard header ---- */
  .user-section-pill {
    font-size: 0.7rem !important;
    padding: 3px 10px !important;
  }
}

/* ============================================
   Learn Bible Custom Styles
   ============================================ */

.book-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: all var(--transition-normal);
}

.book-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary-light);
  box-shadow: 0 4px 20px rgba(246, 166, 35, 0.15);
}

.book-card-container.active .book-card {
  border-color: var(--accent-primary);
  background: rgba(246, 166, 35, 0.03);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chapters-drawer {
  transition: max-height 0.3s ease-out;
}

.difficulty-option-card:hover {
  transform: scale(1.02);
  border-color: var(--text-secondary) !important;
}

.difficulty-option-card.active {
  transform: scale(1.02);
}

.option-card.selected {
  border-color: var(--accent-secondary) !important;
  background: rgba(108, 99, 255, 0.08) !important;
}

.option-card.selected .option-letter {
  background: var(--accent-secondary) !important;
  color: #fff !important;
  border-color: var(--accent-secondary) !important;
}

.chapter-card {
  transition: all 0.2s ease !important;
}

.chapter-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-color: var(--accent-primary) !important;
  background: rgba(255,255,255,0.03) !important;
}