.artist-tree {
  display: grid;
  gap: 0.75rem;
}

.artist-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.artist-root-form {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  justify-content: flex-end;
}

.artist-root-form .form-control {
  max-width: 300px;
}

.artist-root-status {
  margin-left: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.artist-warning {
  color: var(--danger-text);
  margin-bottom: 1rem;
}

.artist-link-form {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.artist-link-form .form-control {
  flex: 1;
  min-width: 240px;
}

.artist-drive-contents {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.artist-drive-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background-color: var(--bg-input);
  color: var(--text-main);
}

.artist-drive-item:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.artist-drive-item small {
  color: var(--text-muted);
}

.artist-tree-root,
.artist-tree-node {
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-main);
  border-radius: calc(var(--radius) * 1.2);
  overflow: hidden;
}

.artist-tree-root > summary,
.artist-tree-node > summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.artist-tree-root > summary:hover,
.artist-tree-node > summary:hover {
  background-color: var(--bg-input);
  color: var(--primary);
}

.artist-tree-root > summary::-webkit-details-marker,
.artist-tree-node > summary::-webkit-details-marker {
  display: none;
}

.artist-tree-toggle {
  display: inline-grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  margin-right: 0.45rem;
  border: 1px solid currentColor;
  border-radius: 4px;
}

.artist-tree-root[open] > summary .artist-tree-toggle,
.artist-tree-node[open] > summary .artist-tree-toggle {
  font-size: 0;
}

.artist-tree-root[open] > summary .artist-tree-toggle::after,
.artist-tree-node[open] > summary .artist-tree-toggle::after {
  content: '-';
  font-size: 1rem;
}

.artist-tree-content {
  padding: 0 1.25rem 1.25rem 2.8rem;
}

.artist-tree-children {
  display: grid;
  gap: 0.6rem;
  margin-top: 0.75rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border-color);
}

.artist-folder-actions,
.artist-user-access,
.artist-user-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.artist-folder-actions {
  margin-bottom: 1rem;
}

.artist-folder-access {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.artist-user-access,
.artist-user-result {
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background-color: var(--bg-input);
  color: var(--text-main);
}

.artist-user-access small,
.artist-user-result small {
  color: var(--text-muted, #667085);
}

.artist-user-search-results {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.45rem;
}

/* Fichiers d'un dossier artiste : liste responsive (mobile-first) */
.artist-folder-files {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.artist-file-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.65rem;
  background-color: var(--bg-card, var(--bg-input, #fff));
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.9rem 1rem;
}

.artist-file-name {
  font-size: 0.95rem;
  line-height: 1.45;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.artist-file-download {
  text-align: center;
  white-space: nowrap;
}

@media (min-width: 641px) {
  .artist-file-item {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
  }

  .artist-file-name {
    flex: 1;
    min-width: 0;
  }

  .artist-file-download {
    flex-shrink: 0;
  }
}

/* ==========================================================================
   1. VARIABLES DE THÈME
   ========================================================================== */
:root {
  --primary: #f59e0b;
  --primary-hover: #d97706;
  --bg-dark: #0c0c0c;
  --bg-card: #1c1c1c;
  --bg-input: #2b2b2b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --radius: 0.75rem;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --danger-border: rgba(239, 68, 68, 0.3);
  --danger-text: #f87171;
  --success-bg: rgba(16, 185, 129, 0.1);
  --success-border: rgba(16, 185, 129, 0.3);
  --success-text: #34d399;
}

:root[data-theme="light"] {
  --primary: #e08a00;
  --primary-hover: #c27000;
  --bg-dark: #f3f3f3;
  --bg-card: #ffffff;
  --bg-input: #f0f0f0;
  --text-main: #1a1a1a;
  --text-muted: #6e6e6e;
  --border-color: #d1d1d1;
  --danger-bg: rgba(239, 68, 68, 0.06);
  --danger-border: rgba(239, 68, 68, 0.22);
  --danger-text: #dc2626;
  --success-bg: rgba(16, 185, 129, 0.06);
  --success-border: rgba(16, 185, 129, 0.22);
  --success-text: #059669;
}

/* ==========================================================================
   2. BASE / RESET
   ========================================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 17.5px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ==========================================================================
   3. STRUCTURE ET LAYOUT
   ========================================================================== */
.main-container {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.navbar {
  background: rgba(11, 15, 23, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}



.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 70px;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.brand-accent {
  color: var(--primary);
}

.brand-sub {
  color: var(--text-main);
}

.nav-user-info {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
}

.badge-primary {
  color: var(--primary);
  border-color: var(--primary-hover);
  margin-bottom: 0.5rem;
}

.footer {
  background-color: #020617;
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  text-align: center;
  margin-top: 40px;

}

.footer-nav a {
  color: #ccc;
  margin: 0 10px;
  text-decoration: none;
}

.footer-nav a:hover {
  color: #ffab10;
}



/* ==========================================================================
   4. COMPOSANTS GÉNÉRAUX
   ========================================================================== */
.user-avatar {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 50%;
  background-color: var(--primary);
  color: #020617;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  user-select: none;
  flex-shrink: 0;
}

.user-dropdown {
  position: absolute;
  top: 48px;
  right: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.75rem 0;
  width: 180px;
  display: none;
  flex-direction: column;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  z-index: 100;
}

.user-dropdown a,
.user-dropdown button {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 0.9rem;
  cursor: pointer;
}

.user-dropdown a:hover,
.user-dropdown button:hover {
  background-color: var(--primary);
  color: #020617;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
  text-align: center;
  height: 34px;
}

.btn-primary {
  background-color: var(--primary);
  color: #020617;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #020617;
}

.btn-danger-outline {
  background: transparent;
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
  height: 34px;
}

.btn-danger-outline:hover {
  background-color: var(--danger-text);
  color: #ffffff;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.alert {
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.alert-error {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
}

.alert-success {
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

/* ==========================================================================
   5. AUTH / FORMULAIRES
   ========================================================================== */
.auth-card {
  max-width: 780px;
  margin: 3rem auto;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: calc(var(--radius) * 1.5);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

#book-links-wrapper {
  width: 100%;
  max-width: none;
}

.book-link-row {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.9rem;
  margin-bottom: 0.75rem;
  background: rgba(148, 163, 184, 0.04);
}

.book-link-grid {
  display: grid;
  grid-template-columns: minmax(160px, 1.2fr) minmax(100px, 160px) minmax(220px, 1.8fr) auto;
  gap: 0.75rem;
  align-items: end;
}

.book-link-grid .form-control {
  min-width: 0;
  width: 100%;
}

@media (max-width: 700px) {
  .book-link-grid {
    grid-template-columns: 1fr;
  }
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.5rem;
  color: #ffffff;
}

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

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-main);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  border-color: var(--primary);
}

.auth-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
}

/* ==========================================================================
   6. CATALOGUE / COURS
   ========================================================================== */
.page-header {
  margin-bottom: 2rem;
}

.page-title {
  font-size: 1.875rem;
  font-weight: 800;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.course-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: calc(var(--radius) * 1.2);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.4);
}

.course-category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.course-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.course-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.favorite-form {
  margin: 0;
}

.favorite-toggle {
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  border-radius: 999px;
  width: 2.25rem;
  height: 2.25rem;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s ease;
}

.favorite-toggle:hover {
  transform: scale(1.08);
  border-color: var(--primary);
  color: var(--primary);
}

.favorite-toggle.active {
  background: rgba(245, 158, 11, 0.12);
  border-color: var(--primary);
  color: var(--primary);
}

.detail-title-row {
  align-items: center;
  margin-bottom: 0.5rem;
}

.course-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.course-card-footer {
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.course-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
}

.course-link:hover {
  color: var(--primary-hover);
}

.course-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}

.course-description {
  white-space: pre-line;
}

.badge {
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  background-color: var(--bg-dark);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

/* ==========================================================================
   7. DÉTAIL COURS / VIDÉO / BLOCS
   ========================================================================== */
.course-detail {
  max-width: 800px;
  margin: 0 auto;
}

.back-link {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  background-color: #000;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.info-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.info-box-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.info-box th,
.info-box td {
  padding: 0.6rem 0.4rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.download-box {
  background-color: var(--bg-card);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ==========================================================================
   8. LECTEUR PDF
   ========================================================================== */
.book-reader-shell {
  max-width: 1200px;
}

.book-reader-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.book-reader-toolbar-bottom {
  justify-content: center;
}

.book-reader-stage {
  position: relative;
  background: #0b0b0b;
  border: 1px solid var(--border-color);
  border-radius: calc(var(--radius) * 1.2);
  min-height: 620px;
  overflow: auto;
  padding: 1rem;
  margin-bottom: 1.25rem;
  transition: all 0.25s ease;
}

.book-reader-stage.fullscreen {
  position: fixed;
  inset: 0;
  min-height: 100vh;
  border-radius: 0;
  border: none;
  z-index: 300;
  overflow: auto;
  padding: 1rem 1.5rem 5rem 1.5rem;
}

.book-reader-track {
  width: 100%;
  min-height: 100%;
  display: block;
  text-align: center;
  overflow: visible;
  padding: 0.5rem 0 1.5rem;
}

.book-reader-page {
  position: relative;
  display: inline-block;
  margin: 0 auto;
  max-width: 100%;
  width: auto;
  min-width: 0;
  background: linear-gradient(180deg, rgba(15, 18, 22, 0.9), rgba(15, 18, 22, 1));
}

.book-reader-page canvas {
  display: block;
  max-width: none;
  max-height: 100%;
  width: auto;
  height: auto;
  border-radius: 0.5rem;
  background: #ffffff;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  z-index: 10;
}

.annotation-layer {
  position: absolute;
  inset: 0;
  pointer-events: auto;
  z-index: 10;
}

.annotation-layer a {
  pointer-events: auto;
  color: #60a5fa;
  text-decoration: underline;
}

.book-reader-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: rgba(245, 158, 11, 0.8);
  color: #020617;
  font-size: 2rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 310;
}

.book-reader-arrow:hover:not(:disabled) {
  background: rgba(245, 158, 11, 0.96);
}

.book-reader-arrow-left {
  left: 1rem;
}

.book-reader-arrow-right {
  right: 1rem;
}

.book-reader-stage.fullscreen .book-reader-arrow {
  display: flex;
}

.book-reader-arrow:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.book-reader-fullscreen-bar {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: min(92%, 420px);
  padding: 0.65rem 0.9rem;
  background: rgba(15, 23, 42, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.38);
  z-index: 320;
}

.book-reader-stage.fullscreen .book-reader-fullscreen-bar {
  display: flex;
}

.book-reader-control {
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border-radius: 999px;
  min-width: 2.2rem;
  height: 2.2rem;
  padding: 0 0.7rem;
  font-weight: 700;
  cursor: pointer;
}

.book-reader-control:hover:not(:disabled) {
  background: rgba(245, 158, 11, 0.18);
  border-color: rgba(245, 158, 11, 0.6);
}

.book-reader-control:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.book-reader-control--active,
.book-reader-control.active {
  background: rgba(245, 158, 11, 0.92);
  color: #020617;
  border-color: rgba(245, 158, 11, 1);
}

.fullscreen-page-info {
  flex: 1;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.book-reader-page.empty {
  color: var(--text-muted);
  font-size: 1rem;
}

.book-description-box {
  margin-top: 1rem;
}

.book-link-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 0.85rem 0 1.1rem;
}

.book-reader-inline-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin: 0 0 1rem;
}

.book-link-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7rem;
  padding: 0.7rem 1.1rem;
  border: none;
  border-radius: 0.7rem;
  background: #22c55e;
  color: #04130a;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(34, 197, 94, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.book-link-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(34, 197, 94, 0.3);
}

.book-link-action:focus-visible {
  outline: 3px solid rgba(34, 197, 94, 0.5);
  outline-offset: 2px;
}

.book-reader-stage.fullscreen .book-reader-inline-links {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  z-index: 330;
  justify-content: center;
  margin: 0;
}

.book-reader-page .book-link-action,
.book-reader-stage.fullscreen .book-link-action {
  position: static;
  z-index: 20;
}

.video-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 400;
  padding: 1rem;
}

.video-modal-overlay.show {
  display: flex;
}

.video-modal-content {
  position: relative;
  width: min(900px, 92vw);
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem;
}

.video-modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.85);
  color: white;
  cursor: pointer;
}

.video-modal-frame {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.video-modal-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ==========================================================================
   9. ERREURS / PAGES
   ========================================================================== */
.error-page {
  text-align: center;
  padding: 5rem 1rem;
}

.error-code {
  font-size: 4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-message {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   10. RESPONSIVE MOBILE
   ========================================================================== */
@media (max-width: 768px) {
  .main-container {
    padding: 1.25rem 1rem;
  }

  body {
    line-height: 1.5;
  }

  .nav-container {
    height: auto;
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .nav-user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    order: 2;
  }

  .nav-brand {
    order: 1;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .page-subtitle {
    font-size: 0.8rem;
  }

  .course-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .course-card {
    padding: 1.25rem;
  }

  .course-card-title {
    font-size: 1.15rem;
  }

  .course-desc {
    font-size: 0.8rem;
  }

  .course-detail {
    padding: 0 0.5rem;
  }

  .video-container {
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
  }

  .auth-card {
    margin: 2rem 1rem;
    padding: 1.5rem;
  }

  .form-control {
    padding: 0.65rem 0.9rem;
    font-size: 0.85rem;
  }

  .form-label {
    font-size: 0.7rem;
  }

  .btn {
    width: 100%;
    padding: 0.7rem 1rem;
    font-size: 0.85rem;
  }

  .btn-danger-outline {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }

  .alert {
    padding: 0.85rem;
    font-size: 0.8rem;
  }

  .footer {
    padding: 1rem 0;
    font-size: 0.7rem;
  }

  .info-box {
    padding: 1.25rem;
  }

  .info-box-title {
    font-size: 1rem;
  }

  .download-box {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .book-reader-stage {
    min-height: 420px;
    overflow-x: auto !important;
    overflow-y: auto !important;
    padding: 0.75rem 0.75rem 4.8rem 0.75rem;
  }

  .book-reader-stage.fullscreen {
    padding-bottom: 5.5rem;
  }

  .book-reader-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .book-reader-arrow {
    position: fixed !important;
    width: 44px;
    height: 44px;
    font-size: 1.7rem;
  }

  .book-reader-fullscreen-bar {
    display: none;
    position: fixed;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 0.7rem);
    gap: 0.15rem;
    padding: 0.35rem 0.25rem;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    background: rgba(15, 23, 42, 0.8);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
  }

  .book-reader-stage.fullscreen .book-reader-fullscreen-bar {
    display: flex;
  }

  .book-reader-control,
  .btn-primary-small {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    flex-shrink: 0;
  }

  .book-reader-control {
    min-width: 1.55rem;
    width: 1.55rem;
    height: 1.55rem;
    padding: 0;
    font-size: 0.66rem;
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
  }

  .fullscreen-page-info {
    font-size: 0.62rem;
    min-width: 0;
    white-space: nowrap;
    flex: 1 1 auto;
    text-align: center;
    opacity: 0.95;
  }

  .btn-primary-small {
    min-width: 1.4rem !important;
    width: 1.4rem !important;
    height: 1.4rem !important;
    min-height: 1.4rem !important;
    padding: 0 !important;
    font-size: 0.56rem;
    border-radius: 50% !important;
    background-color: rgba(245, 158, 11, 0.92);
    box-sizing: border-box;
  }

  .book-reader-track {
    display: block !important;
    justify-content: center !important;
  }

  .book-reader-page {
    padding: 0.5rem;
    width: auto;
    max-width: none;
    margin: 0 auto;
    display: inline-block !important;
    text-align: center !important;
    align-items: center;
    justify-content: center;
  }

  .book-reader-page canvas {
    display: block;
    margin: 0 auto;
    max-width: none;
    width: auto;
    height: auto;
    transform-origin: center center;
    z-index: 1;
  }

  .error-code {
    font-size: 3rem;
  }

  .error-message {
    font-size: 1rem;
  }
}

/* ==========================================================================
   PAGES LÉGALES (MENTIONS LÉGALES & CGU)
   ========================================================================== */
.legal-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem 1rem;
}

.legal-page-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.legal-badge-draft {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: var(--primary);
  padding: 0.4rem 0.95rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.legal-nav-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin: 1.75rem 0 1rem 0;
  flex-wrap: wrap;
}

.legal-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-muted);
  transition: all 0.2s ease;
  text-decoration: none;
}

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

.legal-tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #0c0c0c;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
}

.legal-notice-box {
  background: rgba(245, 158, 11, 0.08);
  border: 1px dashed var(--primary);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  font-size: 0.92rem;
  line-height: 1.65;
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.75rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
  transition: border-color 0.2s ease;
}

.legal-card:hover {
  border-color: rgba(245, 158, 11, 0.4);
}

.legal-card h2 {
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.legal-card h3 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin: 1.35rem 0 0.5rem 0;
  font-weight: 600;
}

.legal-card p {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  margin-bottom: 0.85rem;
}

.legal-card ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-card li {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.legal-card strong {
  color: var(--text-main);
}

.legal-placeholder {
  background: rgba(245, 158, 11, 0.15);
  color: var(--primary);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
  border: 1px dashed rgba(245, 158, 11, 0.4);
  font-size: 0.9em;
}

.legal-actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}