/* ============================================================
   AURA — Design System & Styles
   Application Mobile Éducative en Réalité Augmentée
   ============================================================ */

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

/* ── CSS Custom Properties (Dark Theme Default) ── */
:root {
  /* Couleurs principales */
  --bg-primary: #08080e;
  --bg-secondary: #111118;
  --bg-surface: #181822;
  --bg-card: #1e1e2c;
  --bg-card-hover: #252536;
  --bg-overlay: rgba(8, 8, 14, 0.85);

  /* Texte */
  --text-primary: #f0f0f5;
  --text-secondary: #9090aa;
  --text-tertiary: #606078;
  --text-inverse: #08080e;

  /* Accents */
  --accent-gold: #c9a84c;
  --accent-gold-light: #e8c547;
  --accent-gold-glow: rgba(201, 168, 76, 0.2);
  --accent-indigo: #6c63ff;
  --accent-indigo-glow: rgba(108, 99, 255, 0.2);
  --accent-red: #e74c3c;
  --accent-green: #2d6a4f;
  --accent-green-light: #40916c;

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #c9a84c 0%, #e8c547 100%);
  --gradient-indigo: linear-gradient(135deg, #6c63ff 0%, #a78bfa 100%);
  --gradient-dark: linear-gradient(180deg, #08080e 0%, #111118 100%);

  /* Ombres */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-gold: 0 0 20px rgba(201, 168, 76, 0.15);
  --shadow-glow-indigo: 0 0 20px rgba(108, 99, 255, 0.15);

  /* Bordures */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;

  /* Typographie */
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.85rem;
  --font-size-base: 0.95rem;
  --font-size-md: 1.1rem;
  --font-size-lg: 1.35rem;
  --font-size-xl: 1.75rem;
  --font-size-xxl: 2.25rem;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;

  /* Layout */
  --header-height: 60px;
  --bottom-nav-height: 68px;
  --max-width: 480px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Light Theme ── */
body.light-mode {
  --bg-primary: #f5f2eb;
  --bg-secondary: #ece8df;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f9f7f2;
  --bg-overlay: rgba(245, 242, 235, 0.9);
  --text-primary: #1a1a2e;
  --text-secondary: #555568;
  --text-tertiary: #888898;
  --text-inverse: #f0f0f5;
  --border-color: rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-glow-gold: 0 0 20px rgba(201, 168, 76, 0.1);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  min-height: 100dvh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ── App Container ── */
.app-container {
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  overflow: hidden;
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-md);
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  transition: background var(--transition-normal);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo {
  width: 32px;
  height: 32px;
}

.app-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.app-name span {
  color: var(--accent-gold);
}

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

.header-title {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
  max-width: 140px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  font-size: 1.3rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.icon-btn:hover,
.icon-btn:active {
  background: var(--bg-card);
  color: var(--text-primary);
}

.icon-btn.hidden {
  display: none;
}

/* ── Views ── */
.view {
  display: none;
  padding-top: var(--header-height);
  padding-bottom: var(--space-xl);
  min-height: 100vh;
  min-height: 100dvh;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.view.active {
  display: block;
}

.view.visible {
  opacity: 1;
  transform: translateY(0);
}

.view.has-bottom-nav {
  padding-bottom: calc(var(--bottom-nav-height) + var(--space-xl));
}

.view-header {
  padding: var(--space-lg) var(--space-md) var(--space-md);
}

.view-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: var(--space-xs);
}

.view-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ── Welcome Screen ── */
.welcome-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100dvh - var(--header-height));
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
}

.welcome-hero {
  margin-bottom: var(--space-xxl);
}

.welcome-icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--gradient-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  box-shadow: var(--shadow-glow-gold);
  animation: float 3s ease-in-out infinite;
}

.welcome-icon i {
  font-size: 2.8rem;
  color: var(--text-inverse);
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.welcome-hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.welcome-subtitle {
  font-size: var(--font-size-md);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.welcome-desc {
  font-size: var(--font-size-base);
  color: var(--text-tertiary);
  max-width: 340px;
  line-height: 1.7;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-gold);
  color: var(--text-inverse);
  box-shadow: var(--shadow-glow-gold);
}

.btn-primary:hover,
.btn-primary:active {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 168, 76, 0.3);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-outline {
  background: transparent;
  color: var(--accent-gold);
  border: 1.5px solid var(--accent-gold);
}

.btn-outline:hover {
  background: var(--accent-gold-glow);
}

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

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

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.3rem;
}

.btn-icon.active {
  background: var(--gradient-gold);
  color: var(--text-inverse);
}

/* ── Course Cards (Selection) ── */
.courses-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  padding: 0 var(--space-md) var(--space-md);
}

.course-card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  background: var(--bg-card);
}

.course-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.course-card.selected {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-glow-gold);
}

.course-card-gradient {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.course-card-gradient::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to top, var(--bg-card), transparent);
}

.course-card-emoji {
  font-size: 3rem;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
  z-index: 1;
}

.course-card-body {
  padding: var(--space-md);
}

.course-card-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.course-card-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.course-card-period {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.course-card-check {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: white;
  transition: all var(--transition-fast);
  border: 2px solid rgba(255, 255, 255, 0.2);
  z-index: 2;
}

.course-card.selected .course-card-check {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
}

/* ── Bottom Action Bar ── */
.bottom-action {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  padding: var(--space-md);
  background: var(--bg-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  z-index: 90;
}

.bottom-action .btn {
  width: 100%;
}

/* ── My Courses List ── */
.my-courses-list {
  padding: 0 var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.my-course-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

.my-course-item:hover,
.my-course-item:active {
  background: var(--bg-card-hover);
  transform: translateX(4px);
  border-color: var(--accent-gold);
}

.my-course-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.my-course-info {
  flex: 1;
  min-width: 0;
}

.my-course-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 2px;
}

.my-course-meta {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.my-course-arrow {
  color: var(--text-tertiary);
  font-size: 1.4rem;
  flex-shrink: 0;
}

/* Progress badge */
.progress-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  background: var(--accent-gold-glow);
  color: var(--accent-gold);
}

/* ── Fiches List ── */
.fiches-list {
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.fiche-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

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

.fiche-card-image {
  width: 100%;
  height: 130px;
  object-fit: cover;
  background: var(--bg-surface);
}

.fiche-card-body {
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

.fiche-card-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  line-height: 1.3;
}

.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Fiche Detail ── */
.fiche-detail {
  padding: var(--space-md);
}

.fiche-detail-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-md);
  background: var(--bg-surface);
}

.fiche-detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.fiche-detail-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  flex: 1;
}

.fiche-detail-summary {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

/* Audio Player */
.audio-player {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-surface);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--space-md);
  border: 1px solid var(--border-color);
}

.audio-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--text-inverse);
  flex-shrink: 0;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-glow-gold);
}

.audio-btn:hover {
  transform: scale(1.08);
}

.audio-btn.playing {
  animation: pulse-audio 1.5s ease-in-out infinite;
}

@keyframes pulse-audio {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(201, 168, 76, 0.4);
  }

  50% {
    box-shadow: 0 0 0 12px rgba(201, 168, 76, 0);
  }
}

.audio-info {
  flex: 1;
}

.audio-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 2px;
}

.audio-sublabel {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

/* Action Buttons Row */
.fiche-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.action-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-md);
  background: var(--bg-surface);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
}

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

.action-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.action-card-icon.quiz-icon {
  background: var(--accent-indigo-glow);
  color: var(--accent-indigo);
}

.action-card-icon.ar-icon {
  background: var(--accent-gold-glow);
  color: var(--accent-gold);
}

.action-card-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.action-card-sublabel {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

/* ── Quiz ── */
.quiz-container {
  padding: var(--space-md);
}

.quiz-progress {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.quiz-progress-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-surface);
  border-radius: 3px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: var(--gradient-gold);
  border-radius: 3px;
  transition: width var(--transition-normal);
}

.quiz-progress-text {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  font-weight: 600;
  white-space: nowrap;
}

.quiz-question {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: var(--space-lg);
}

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

.quiz-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--border-radius-md);
  border: 2px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-base);
  text-align: left;
  width: 100%;
}

.quiz-option:hover:not(.disabled) {
  border-color: var(--accent-gold);
  background: var(--bg-card-hover);
}

.quiz-option.correct {
  border-color: var(--accent-green-light);
  background: rgba(45, 106, 79, 0.15);
}

.quiz-option.incorrect {
  border-color: var(--accent-red);
  background: rgba(231, 76, 60, 0.1);
}

.quiz-option.disabled {
  cursor: default;
  opacity: 0.6;
}

.quiz-option.disabled.correct {
  opacity: 1;
}

.quiz-option-marker {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.quiz-option.correct .quiz-option-marker {
  background: var(--accent-green-light);
  border-color: var(--accent-green-light);
  color: white;
}

.quiz-option.incorrect .quiz-option-marker {
  background: var(--accent-red);
  border-color: var(--accent-red);
  color: white;
}

.quiz-next-btn {
  margin-top: var(--space-lg);
  width: 100%;
}

/* Quiz Results */
.quiz-results {
  text-align: center;
  padding: var(--space-xxl) var(--space-md);
}

.quiz-score-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  border: 4px solid var(--accent-gold);
  background: var(--accent-gold-glow);
}

.quiz-score-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-gold);
  line-height: 1;
}

.quiz-score-label {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin-top: 4px;
}

.quiz-results-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.quiz-results-msg {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

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

/* ── AR Viewer ── */
.view-ar-fullscreen {
  padding: 0 !important;
  position: fixed !important;
  inset: 0;
  z-index: 200;
  min-height: 100vh;
  min-height: 100dvh;
}

.view-ar-fullscreen.active {
  display: block !important;
}

.ar-container {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: #000;
}

.ar-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ar-overlay-image {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) perspective(800px) rotateY(0deg);
  width: 260px;
  height: auto;
  max-height: 300px;
  object-fit: contain;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(201, 168, 76, 0.3);
  animation: ar-float 4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes ar-float {
  0% {
    transform: translate(-50%, -50%) perspective(800px) rotateY(-3deg) translateY(0);
  }

  25% {
    transform: translate(-50%, -50%) perspective(800px) rotateY(3deg) translateY(-8px);
  }

  50% {
    transform: translate(-50%, -50%) perspective(800px) rotateY(-2deg) translateY(-4px);
  }

  75% {
    transform: translate(-50%, -50%) perspective(800px) rotateY(2deg) translateY(-10px);
  }

  100% {
    transform: translate(-50%, -50%) perspective(800px) rotateY(-3deg) translateY(0);
  }
}

.ar-hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent);
}

.ar-info {
  color: white;
}

.ar-info-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.ar-info-subtitle {
  font-size: var(--font-size-xs);
  opacity: 0.8;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.ar-close-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
}

.ar-scan-line {
  position: absolute;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--accent-gold);
  box-shadow: 0 0 8px var(--accent-gold), 0 0 20px rgba(201, 168, 76, 0.3);
  animation: scan 3s ease-in-out infinite;
  opacity: 0.6;
}

@keyframes scan {
  0% {
    top: 20%;
    opacity: 0;
  }

  10% {
    opacity: 0.6;
  }

  90% {
    opacity: 0.6;
  }

  100% {
    top: 80%;
    opacity: 0;
  }
}

.ar-corners {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 320px;
  pointer-events: none;
}

.ar-corner {
  position: absolute;
  width: 24px;
  height: 24px;
  border-color: var(--accent-gold);
  border-style: solid;
  border-width: 0;
}

.ar-corner.tl {
  top: 0;
  left: 0;
  border-top-width: 3px;
  border-left-width: 3px;
  border-top-left-radius: 8px;
}

.ar-corner.tr {
  top: 0;
  right: 0;
  border-top-width: 3px;
  border-right-width: 3px;
  border-top-right-radius: 8px;
}

.ar-corner.bl {
  bottom: 0;
  left: 0;
  border-bottom-width: 3px;
  border-left-width: 3px;
  border-bottom-left-radius: 8px;
}

.ar-corner.br {
  bottom: 0;
  right: 0;
  border-bottom-width: 3px;
  border-right-width: 3px;
  border-bottom-right-radius: 8px;
}

.ar-bottom-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg) var(--space-md);
  padding-bottom: calc(var(--space-lg) + env(safe-area-inset-bottom, 0));
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  display: flex;
  justify-content: center;
}

.ar-capture-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid white;
  background: transparent;
  position: relative;
}

.ar-capture-btn::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
}

/* AR Error */
.ar-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--space-xl);
  text-align: center;
  color: white;
  background: #0a0a0f;
}

.ar-error i {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  color: var(--accent-gold);
}

.ar-error h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.ar-error p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* ── Bottom Navigation ── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: var(--bottom-nav-height);
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  z-index: 80;
  padding-bottom: env(safe-area-inset-bottom, 0);
  transition: transform var(--transition-normal);
}

.bottom-nav.hidden {
  transform: translateX(-50%) translateY(100%);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  border-radius: var(--border-radius-sm);
}

.nav-item i {
  font-size: 1.4rem;
}

.nav-item.active {
  color: var(--accent-gold);
}

.nav-item:hover {
  color: var(--text-primary);
}

/* ── Empty State ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xxl) var(--space-lg);
  text-align: center;
  color: var(--text-tertiary);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

.empty-state h3 {
  font-size: var(--font-size-md);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.empty-state p {
  font-size: var(--font-size-sm);
}

/* ── Animations ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.animate-in {
  animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  opacity: 0;
}

.animate-in:nth-child(1) {
  animation-delay: 0.05s;
}

.animate-in:nth-child(2) {
  animation-delay: 0.1s;
}

.animate-in:nth-child(3) {
  animation-delay: 0.15s;
}

.animate-in:nth-child(4) {
  animation-delay: 0.2s;
}

.animate-in:nth-child(5) {
  animation-delay: 0.25s;
}

.animate-in:nth-child(6) {
  animation-delay: 0.3s;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 4px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

/* ── Responsive ── */
@media (min-width: 481px) {
  .app-container {
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
  }
}

@media (min-width: 600px) {
  .courses-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ── Utility ── */
.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;
}

/* ── Image loading placeholder ── */
.img-placeholder {
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  font-size: 2rem;
}

/*  Profile, History & Settings  */
.profile-container { padding: 0 0 var(--space-xl) 0; }
.profile-card { background: var(--bg-surface); padding: var(--space-lg); border-radius: var(--radius-lg); margin-bottom: var(--space-md); text-align: center; border: 1px solid var(--border-color); }
.profile-avatar { width: 80px; height: 80px; background: var(--accent-blue); color: #fff; font-size: 2rem; display: flex; align-items: center; justify-content: center; border-radius: 50%; margin: 0 auto var(--space-sm); }
.profile-name { font-size: 1.5rem; font-weight: 700; margin-bottom: 4px; }
.profile-level { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: var(--space-md); }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-sm); margin-bottom: var(--space-md); }
.stat-card { background: var(--bg-surface); padding: var(--space-md); border-radius: var(--radius-md); text-align: center; border: 1px solid var(--border-color); }
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }

.history-list { display: flex; flex-direction: column; gap: var(--space-sm); padding-bottom: var(--space-xl); }
.history-item { display: flex; align-items: center; gap: var(--space-md); background: var(--bg-surface); padding: var(--space-sm); border-radius: var(--radius-md); border: 1px solid var(--border-color); cursor: pointer; transition: all 0.2s; }
.history-item:hover { transform: translateY(-2px); border-color: var(--accent-blue); }
.history-img { width: 60px; height: 60px; border-radius: var(--radius-sm); object-fit: cover; }
.history-info { flex: 1; }
.history-title { font-weight: 600; margin-bottom: 4px; font-size: 1rem; }
.history-date { font-size: 0.8rem; color: var(--text-tertiary); }

.settings-list { display: flex; flex-direction: column; gap: var(--space-sm); padding-bottom: var(--space-xl); }
.settings-item { display: flex; align-items: center; justify-content: space-between; background: var(--bg-surface); padding: var(--space-md); border-radius: var(--radius-md); border: 1px solid var(--border-color); }
.settings-info { display: flex; align-items: center; gap: var(--space-sm); }
.settings-icon { font-size: 1.5rem; color: var(--text-secondary); }
.settings-label { font-weight: 500; }
.settings-item.danger { color: var(--accent-red); cursor: pointer; }
.settings-item.danger .settings-icon { color: var(--accent-red); }
.settings-item:active { opacity: 0.7; }

/* ── Edit Profile & Avatars ── */
.form-group { margin-bottom: var(--space-md); }
.form-label { display: block; font-size: var(--font-size-sm); font-weight: 600; margin-bottom: 6px; color: var(--text-secondary); }
.form-input { width: 100%; background: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-primary); padding: 12px var(--space-md); border-radius: var(--border-radius-md); font-size: var(--font-size-base); transition: all var(--transition-fast); }
.form-input:focus { border-color: var(--accent-gold); outline: none; box-shadow: var(--shadow-glow-gold); }
textarea.form-input { resize: vertical; min-height: 80px; }

.avatar-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(60px, 1fr)); gap: var(--space-sm); margin-bottom: var(--space-md); }
.avatar-option { width: 60px; height: 60px; border-radius: 50%; background: var(--bg-surface); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; cursor: pointer; border: 2px solid transparent; transition: all var(--transition-fast); }
.avatar-option:hover { background: var(--bg-card-hover); transform: scale(1.05); }
.avatar-option.selected { border-color: var(--accent-gold); background: var(--accent-gold-glow); color: var(--accent-gold); }

/* ── Badges ── */
.badges-section { margin-top: var(--space-xl); text-align: left; }
.badges-header { font-size: var(--font-size-md); font-weight: 600; margin-bottom: var(--space-sm); display: flex; align-items: center; gap: 8px; }
.badges-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); gap: var(--space-sm); }
.badge-item { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; opacity: 0.4; filter: grayscale(1); transition: all var(--transition-normal); }
.badge-item.unlocked { opacity: 1; filter: grayscale(0); }
.badge-icon { width: 60px; height: 60px; border-radius: 50%; background: var(--bg-surface); border: 2px solid var(--border-color); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; box-shadow: var(--shadow-sm); }
.badge-item.unlocked .badge-icon { border-color: var(--accent-gold); background: var(--accent-gold-glow); color: var(--accent-gold); box-shadow: var(--shadow-glow-gold); }
.badge-title { font-size: 0.75rem; font-weight: 600; line-height: 1.2; }

/* ── Toasts (Gamification) ── */
.toast-container { position: fixed; bottom: calc(var(--bottom-nav-height) + var(--space-md)); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: var(--space-sm); z-index: 9999; pointer-events: none; width: 90%; max-width: 400px; }
.toast { background: var(--bg-card); border: 1px solid var(--border-color); border-left: 4px solid var(--accent-gold); border-radius: var(--border-radius-sm); padding: var(--space-sm) var(--space-md); display: flex; align-items: center; gap: var(--space-md); box-shadow: var(--shadow-lg); transform: translateY(20px); opacity: 0; transition: all var(--transition-normal); }
.toast.show { transform: translateY(0); opacity: 1; }
.toast-icon { font-size: 1.8rem; color: var(--accent-gold); background: var(--accent-gold-glow); width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.toast-content { flex: 1; }
.toast-title { font-weight: 700; font-size: var(--font-size-sm); margin-bottom: 2px; }
.toast-message { font-size: var(--font-size-xs); color: var(--text-secondary); }

/* ── Search Bar ── */
.search-container {
  position: relative;
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
  padding: 0 var(--space-md);
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 2px rgba(201, 168, 76, 0.2);
}

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

.search-icon {
  position: absolute;
  left: 30px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 1.2rem;
}

/* ── Fiche Action Buttons Top ── */
.fiche-actions-top {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
  margin-bottom: var(--space-sm);
}

.btn-icon-action {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-icon-action:hover {
  background: var(--bg-card-hover);
  transform: scale(1.05);
}

.btn-icon-action.active {
  color: var(--accent-gold);
  border-color: var(--accent-gold);
  background: rgba(201, 168, 76, 0.1);
}

.btn-icon-action.active i {
  animation: pop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* ── Favorites Grid (Profile) ── */
.favorites-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.profile-section {
  margin-top: var(--space-xl);
  text-align: left;
}

.profile-section-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── UI Components ── */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  transition: all var(--transition-fast);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 1px;
  width: 18px;
  height: 18px;
  background-color: var(--text-tertiary);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle-switch:has(input:checked) {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.toggle-switch:has(input:checked)::after {
  transform: translateX(20px);
  background-color: #fff;
}

/* ── Accessibility Preferences ── */
body.large-text {
  font-size: 1.1rem;
}

body.large-text .course-card-desc,
body.large-text .fiche-detail-summary,
body.large-text .quiz-results-msg {
  font-size: 1.15rem;
  line-height: 1.7;
}

body.large-text .form-input,
body.large-text .quiz-option span {
  font-size: 1.1rem;
}

body.reduce-motion *,
body.reduce-motion *::before,
body.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

/* ── Fiches Filters ── */
.fiches-filter-container {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding: 0 var(--space-md) var(--space-sm);
  margin: 0 calc(var(--space-md) * -1);
  scrollbar-width: none; /* Firefox */
}

.fiches-filter-container::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.filter-btn {
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.filter-btn.active {
  background: var(--accent-gold-glow);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

/* ── AR Capture Flash ── */
.capture-flash {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 9999;
  animation: flash 0.3s ease-out forwards;
  pointer-events: none;
}

@keyframes flash {
  0% { opacity: 1; }
  100% { opacity: 0; }
}

/* ── Audio Playing Animation ── */
.audio-btn.playing {
  animation: pulse-ring 1.5s infinite;
  background: var(--accent-gold-glow);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(201, 168, 76, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(201, 168, 76, 0); }
  100% { box-shadow: 0 0 0 0 rgba(201, 168, 76, 0); }
}