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

    :root {
      --bg-color: #FFFFF8;
      --text-color: #111111;
      --border-color: rgba(17, 17, 17, 0.15);
      --accent-color: #111111;
      --success-color: #22c55e;
      --error-color: #ef4444;
      --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
      --font-body: 'Libre Baskerville', Georgia, 'Times New Roman', serif;
    }

    body.dark {
      --bg-color: #111111;
      --text-color: #FFFFF8;
      --border-color: rgba(255, 255, 248, 0.15);
      --accent-color: #FFFFF8;
    }

    body {
      font-family: var(--font-display);
      background-color: var(--bg-color);
      color: var(--text-color);
      font-weight: 400;
      line-height: 1.6;
      font-size: 18px;
      transition: background-color 0.3s ease, color 0.3s ease;
      letter-spacing: 0;
    }

    a {
      color: var(--accent-color);
      text-decoration: none;
      transition: opacity 0.15s;
      border-bottom: 1px solid transparent;
    }

    a:hover {
      opacity: 0.7;
      border-bottom-color: var(--accent-color);
    }

    button {
      font-family: var(--font-display);
      font-weight: 500;
      cursor: pointer;
      transition: opacity 0.15s;
    }

    button:hover {
      opacity: 0.7;
    }

    .container {
      max-width: 1400px;
      margin: 0 auto;
      padding: 0 48px;
    }

    /* Navigation */
    nav {
      border-bottom: 1px solid var(--border-color);
      padding: 20px 0;
      position: sticky;
      top: 0;
      background-color: var(--bg-color);
      z-index: 300;
      transition: none;
      font-family: var(--font-display);
    }

    nav .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      position: relative;
    }

    .logo {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 500;
      letter-spacing: -0.01em;
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-color);
      border-bottom: none;
    }

    .logo img {
      height: 56px;
      width: auto;
    }

    .nav-center {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
    }

      height: 56px;
      width: auto;
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .nav-link-qcm {
      font-family: var(--font-display);
      font-size: 14px;
      font-weight: 500;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--text-color);
      border-bottom: none;
    }

    .nav-link-qcm:hover {
      opacity: 0.7;
      border-bottom: none;
    }

    .nav-links {
      display: none;
    }

    /* Theme toggle switch */
    .switch-container {
      display: flex;
      align-items: center;
    }

      position: absolute;
      opacity: 0;
      width: 0;
      height: 0;
    }

    .switch {
      display: inline-block;
      width: 36px;
      height: 20px;
      position: relative;
      background-color: #ccc;
      border-radius: 10px;
      cursor: pointer;
      transition: background-color 0.3s ease;
    }

    .switch:before,
    .switch:after {
      content: "";
      position: absolute;
      top: 2px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      transition: transform 0.3s ease;
    }

    .switch:before {
      left: 2px;
      background-color: #fff;
    }

    .switch:after {
      right: 2px;
      background-color: #000;
    }

      background-color: #6e6e6e;
    }

      transform: translateX(16px);
    }

      transform: translateX(-16px);
    }

    /* Animated burger icon */
    .hamburglar {
      transform: scale(0.55);
      position: relative;
      display: block;
      width: 68px;
      height: 68px;
      margin: -16px -10px -16px -10px;
      background: transparent;
      cursor: pointer;
      -webkit-touch-callout: none;
      user-select: none;
    }

    .path-burger {
      position: absolute;
      top: 0;
      left: 0;
      height: 68px;
      width: 68px;
      mask: url(#mask);
      -webkit-mask: url(#mask);
    }

    .animate-path {
      position: absolute;
      top: 0;
      left: 0;
      width: 68px;
      height: 68px;
    }

    .path-rotation {
      height: 34px;
      width: 34px;
      margin: 34px 34px 0 0;
      transform: rotate(0deg);
      transform-origin: 100% 0;
    }

      content: '';
      display: block;
      width: 30px;
      height: 34px;
      margin: 0 4px 0 0;
      background: var(--text-color);
    }

    .burger-icon {
      position: absolute;
      padding: 20px 16px;
      height: 68px;
      width: 68px;
    }

    .burger-container {
      position: relative;
      height: 28px;
      width: 36px;
    }

    .burger-bun-top,
    .burger-bun-bot,
    .burger-filling {
      position: absolute;
      display: block;
      height: 4px;
      width: 36px;
      border-radius: 2px;
      background: var(--text-color);
    }

    .burger-bun-top {
      top: 0;
      transform-origin: 34px 2px;
    }

    .burger-bun-bot {
      bottom: 0;
      transform-origin: 34px 2px;
    }

    .burger-filling {
      top: 12px;
    }

    .burger-ring {
      position: absolute;
      top: 0;
      left: 0;
      width: 68px;
      height: 68px;
    }

    .svg-ring {
      width: 68px;
      height: 68px;
    }

    .path {
      stroke-dasharray: 240;
      stroke-dashoffset: 240;
      stroke-linejoin: round;
    }




    /* Burger menu overlay */
    .menu-overlay {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      background-color: var(--bg-color);
      z-index: 200;
      display: none;
      flex-direction: column;
      padding: 100px 48px 32px;
      transition: none;
    }

    .menu-overlay.open {
      display: flex;
    }

    .menu-items {
      display: flex;
      flex-direction: column;
      gap: 0;
      flex: 1;
    }

    .menu-items a {
      font-family: var(--font-display);
      font-size: clamp(32px, 5vw, 56px);
      font-weight: 500;
      letter-spacing: -0.02em;
      padding: 16px 0;
      border-bottom: 1px solid var(--border-color);
      display: block;
      color: var(--text-color);
    }

    .menu-items a:first-child {
      border-top: 1px solid var(--border-color);
    }

    .btn-primary {
      font-family: var(--font-display);
      background-color: var(--accent-color);
      color: var(--bg-color);
      padding: 14px 28px;
      border: 1px solid var(--accent-color);
      border-bottom: none;
      text-decoration: none;
      display: inline-block;
      cursor: pointer;
      transition: opacity 0.15s;
    }

    .btn-primary:hover {
      opacity: 0.85;
    }

    .btn-outline {
      font-family: var(--font-display);
      border: 1px solid var(--border-color);
      color: var(--text-color);
      padding: 14px 28px;
      background: transparent;
      text-decoration: none;
      display: inline-block;
      cursor: pointer;
      transition: opacity 0.15s;
    }

    .btn-outline:hover {
      opacity: 0.7;
    }

    /* Main content */
    main {
      padding: 80px 48px;
      min-height: calc(100vh - 200px);
    }

    h1 {
      font-size: clamp(32px, 5vw, 48px);
      margin-bottom: 16px;
      font-weight: 400;
      letter-spacing: -0.03em;
    }

    .subtitle {
      font-size: 18px;
      opacity: 0.9;
      margin-bottom: 48px;
    }

    /* Filters */
    .filters {
      display: flex;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    select, input[type="text"] {
      padding: 12px;
      border: 1px solid var(--border-color);
      background-color: var(--bg-color);
      color: var(--text-color);
      font-size: 16px;
      font-family: inherit;
      cursor: pointer;
    }

    select:focus, input[type="text"]:focus {
      outline: none;
      opacity: 0.7;
    }

    /* Quiz Grid — Neumorphism Cards */
    .quiz-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 48px;
      margin-bottom: 48px;
    }

    .quiz-card {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 20px;
      cursor: pointer;
      transition: box-shadow 0.2s ease, transform 0.15s ease;
      border-radius: 12px;
    }

    .quiz-card:hover {
      transform: translateY(-2px);
    }

    .quiz-number-wrap {
      position: relative;
      flex-shrink: 0;
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .quiz-icon {
      font-size: 24px;
      opacity: 0.6;
    }

    .quiz-number {
      display: none;
    }

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

    .quiz-title {
      font-size: 14px;
      line-height: 1.4;
      margin-bottom: 6px;
      font-weight: 500;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .quiz-author {
      font-size: 12px;
      opacity: 0.75;
      margin-bottom: 8px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .quiz-meta-row {
      display: flex;
      gap: 12px;
      align-items: center;
      font-size: 12px;
      opacity: 0.75;
      margin-bottom: 10px;
    }

    .quiz-themes {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .theme-tag {
      font-size: 11px;
      padding: 2px 6px;
      border: 1px solid var(--border-color);
      opacity: 0.75;
    }

    /* Quiz Player */
    .quiz-player {
      display: none;
    }

    .quiz-player.active {
      display: block;
    }

    .quiz-header {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 24px;
      margin-bottom: 32px;
    }

    .quiz-progress {
      font-size: 14px;
      opacity: 0.75;
      margin-bottom: 8px;
    }

    .question-card {
      border: 1px solid var(--border-color);
      padding: 32px;
      margin-bottom: 32px;
    }

    .question-with-pdf {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: start;
    }

    .pdf-viewer {
      position: sticky;
      top: 100px;
      border: 1px solid var(--border-color);
      height: 600px;
      overflow: hidden;
    }

    .pdf-viewer iframe {
      width: 100%;
      height: 100%;
      border: none;
    }

    @media (max-width: 1024px) {
      .question-with-pdf {
        grid-template-columns: 1fr;
      }

      .pdf-viewer {
        position: relative;
        top: 0;
        height: 400px;
      }
    }

    .question-text {
      font-size: 20px;
      margin-bottom: 24px;
      line-height: 1.5;
    }

    .answers-list {
      list-style: none;
    }

    .answer-item {
      border: 1px solid var(--border-color);
      padding: 16px;
      margin-bottom: 12px;
      cursor: pointer;
      transition: opacity 0.15s;
      display: flex;
      align-items: start;
      gap: 12px;
    }

    .answer-item:hover {
      opacity: 0.7;
    }

    .answer-item.selected {
      background-color: var(--text-color);
      color: var(--bg-color);
    }

    .answer-checkbox {
      width: 20px;
      height: 20px;
      border: 1px solid var(--border-color);
      flex-shrink: 0;
      margin-top: 2px;
    }

    .answer-item.selected .answer-checkbox {
      background-color: var(--bg-color);
    }

    .quiz-navigation {
      display: flex;
      gap: 16px;
      justify-content: space-between;
      margin-top: 32px;
    }

    /* Results */
    .results-section {
      display: none;
    }

    .results-section.active {
      display: block;
    }

    .score-card {
      border: 1px solid var(--border-color);
      padding: 48px;
      text-align: center;
      margin-bottom: 48px;
    }

    .score-value {
      font-size: 72px;
      margin-bottom: 16px;
    }

    .score-label {
      font-size: 20px;
      opacity: 0.9;
    }

    .result-item {
      border: 1px solid var(--border-color);
      padding: 24px;
      margin-bottom: 24px;
    }

    .result-item.correct {
      border-color: var(--success-color);
    }

    .result-item.incorrect {
      border-color: var(--error-color);
    }

    .result-header {
      display: flex;
      justify-content: space-between;
      align-items: start;
      margin-bottom: 16px;
    }

    .result-status {
      font-size: 14px;
      padding: 4px 12px;
      border: 1px solid var(--border-color);
    }

    .result-status.correct {
      color: var(--success-color);
      border-color: var(--success-color);
    }

    .result-status.incorrect {
      color: var(--error-color);
      border-color: var(--error-color);
    }

    .answer-review {
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }

    .answer-review-item {
      padding: 12px;
      margin-bottom: 8px;
      border: 1px solid var(--border-color);
    }

    .answer-review-item.correct-answer {
      background-color: rgba(34, 197, 94, 0.1);
    }

    .answer-review-item.user-answer {
      background-color: rgba(239, 68, 68, 0.1);
    }

    .justification {
      margin-top: 16px;
      padding: 16px;
      border: 1px solid var(--border-color);
      opacity: 0.9;
      font-size: 14px;
      line-height: 1.6;
    }

    .hidden {
      display: none;
    }

    @media (max-width: 1024px) {
      .quiz-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }
    }

    @media (max-width: 768px) {.nav-center{display:none}
      .nav-center {
        display: none;
      }

      .container {
        padding: 0 24px;
      }

      main {
        padding: 48px 24px;
      }

      .quiz-grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }

      .quiz-number-wrap {
        width: 40px;
        height: 40px;
      }

      .quiz-icon {
        font-size: 20px;
      }

      .menu-overlay {
        padding: 24px 24px;
      }

      .menu-items a {
        font-size: clamp(24px, 6vw, 40px);
      }
    }

/* ===== Thème bilan-papier — référence visuelle /bilan/ (surcouche) =====
   Mappe les vars locales vers les tokens du site (clair/sombre auto via
   light-dark + data-theme) et applique le langage carte bilan :
   papier, encadrés encre 2px, ombre dure, jaune signal pour la sélection. */
:root {
  --bg-color: var(--bg-paper, #FFFFF8);
  --text-color: var(--text-main, #111111);
  --border-color: var(--border-color-soft, rgba(17, 17, 17, 0.15));
  --accent-color: var(--text-main, #111111);
  --success-color: var(--accent-success, #22c55e);
  --error-color: var(--accent-error, #ef4444);
  --signal-color: var(--signal, #f3cc3c);
  --signal-ink: var(--signal-ink, #171714);
  --font-display: var(--font-heading, 'Inter', Arial, sans-serif);
}

body.dark {
  --bg-color: var(--bg-paper, #111111);
  --text-color: var(--text-main, #FFFFF8);
  --accent-color: var(--text-main, #FFFFF8);
}

.quiz-card {
  background: var(--bg-color);
  border: 2px solid var(--text-color);
  border-radius: 12px;
  box-shadow: 3px 3px 0 var(--text-color);
}

.quiz-card:hover {
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 var(--signal-color, var(--text-color));
}

.answer-item {
  border: 2px solid var(--text-color);
  border-radius: 10px;
  background: var(--bg-color);
}

.answer-item:hover {
  opacity: 1;
  border-color: var(--signal-color, var(--text-color));
}

.answer-item.selected {
  background-color: var(--signal-color, var(--text-color));
  color: var(--signal-ink, var(--bg-color));
  box-shadow: 2px 2px 0 var(--text-color);
}

.btn-primary {
  background-color: var(--signal-color, var(--accent-color));
  color: var(--signal-ink, var(--bg-color));
  border: 2px solid var(--text-color);
  border-radius: 10px;
  box-shadow: 3px 3px 0 var(--text-color);
  font-weight: 700;
}

.btn-primary:hover {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 4px 4px 0 var(--text-color);
}

.quiz-question-text, .question-text {
  font-family: var(--font-body, Georgia, serif);
}