:root {
    --sidebar-width: 340px;
    --lms-bg: var(--bg);
    --lms-surface: var(--surface);
    --lms-surface-soft: color-mix(in srgb, var(--surface) 88%, var(--text) 12%);
    --lms-text: var(--text);
    --lms-text-muted: var(--muted);
    --lms-border: var(--border);
    --lms-primary: var(--accent);
    --lms-code-bg: #0f172a;
    --lms-code-text: #e2e8f0;
    --lms-mastered: #15803d;
    --lms-review: #d97706;
    --lms-not-started: #64748b;
  }

  html[data-theme="dark"] {
    --lms-surface-soft: color-mix(in srgb, var(--surface) 92%, white 8%);
    --lms-code-bg: #09111d;
    --lms-code-text: #dbe7f5;
    --lms-mastered: #4ade80;
    --lms-review: #f59e0b;
    --lms-not-started: #94a3b8;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--lms-bg);
    color: var(--lms-text);
  }

  .lms-page {
    width: 100%;
    min-height: 100vh;
    margin-top: 60px;
    background: var(--lms-bg);
    color: var(--lms-text);
  }

  .lms-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    width: 100%;
    min-height: 100vh;
    align-items: start;
  }

  .lms-sidebar {
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    overflow: hidden;
    border-right: 1px solid var(--lms-border);
    background: var(--lms-surface);
  }

  .lms-sidebar-inner {
    height: 100vh;
    overflow-y: auto;
    padding: 1.25rem;
  }

  .lms-content {
    min-width: 0;
    width: 100%;
    padding: 1.5rem 2.2rem 6rem;
  }

  .course-content {
    width: 100%;
    max-width: none;
  }

  .course-content > * {
  width: 100%;
  }

  .course-content h1,
  .course-content h2,
  .course-content h3 {
    scroll-margin-top: 1rem;
    color: var(--lms-text);
  }

  .course-content h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.05;
    margin-bottom: 1rem;
  }

  .course-content h2 {
    margin: 0 0 .75rem;
    font-size: clamp(1.35rem, 2.2vw, 1.9rem);
    line-height: 1.15;
  }

  .course-content h3 {
    margin: 1.2rem 0 .5rem;
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  }

  .course-content p,
  .course-content li {
    color: var(--lms-text-muted);
    line-height: 1.8;
  }

  .course-content ul {
    padding-left: 1.2rem;
  }

  .course-content code {
    background: color-mix(in srgb, var(--lms-primary) 10%, var(--lms-surface));
    color: var(--lms-text);
    padding: 0.12rem 0.35rem;
    border-radius: 6px;
  }

  .toc-title {
    margin: 0 0 0.8rem;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--lms-text-muted);
  }

  .toc-progress {
    margin-bottom: 1.2rem;
    padding: 0.9rem;
    border: 1px solid var(--lms-border);
    border-radius: 14px;
    background: var(--lms-surface-soft);
  }

  .toc-progress strong {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.95rem;
    color: var(--lms-text);
  }

  .toc-progress small {
    color: var(--lms-text-muted);
  }

  .progress-track {
    width: 100%;
    height: 10px;
    margin: 0.75rem 0 0.4rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--lms-text) 12%, transparent);
    overflow: hidden;
  }

  .progress-bar {
    width: 0;
    height: 100%;
    border-radius: 999px;
    background: var(--lms-primary);
    transition: width 0.25s ease;
  }

  .toc-menu a {
    display: block;
    padding: 0.5rem 0.7rem;
    border-radius: 10px;
    color: var(--lms-text-muted);
    transition: background 0.2s ease, color 0.2s ease;
    line-height: 1.35;
    font-size: 0.95rem;
    text-decoration: none;
  }

  .toc-menu a:hover,
  .toc-menu a.is-active {
    background: color-mix(in srgb, var(--lms-primary) 10%, var(--lms-surface));
    color: var(--lms-text);
  }

  .toc-menu .toc-level-2 {
    font-weight: 700;
    margin-top: 0.2rem;
  }

  .toc-menu .toc-level-3 {
    padding-left: 1.35rem;
    font-size: 0.9rem;
    color: var(--lms-text-muted);
  }

  .toc-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
  }

  .toc-item-label {
    min-width: 0;
    flex: 1;
  }

  .toc-badge {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    padding: 0.15rem 0.45rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    background: color-mix(in srgb, var(--lms-text) 12%, transparent);
    color: var(--lms-text);
  }

  .toc-badge.is-mastered {
    background: color-mix(in srgb, var(--lms-mastered) 18%, transparent);
    color: var(--lms-mastered);
  }

  .toc-badge.is-review {
    background: color-mix(in srgb, var(--lms-review) 18%, transparent);
    color: var(--lms-review);
  }

  .toc-badge.is-not-started {
    background: color-mix(in srgb, var(--lms-not-started) 18%, transparent);
    color: var(--lms-not-started);
  }

  .lesson-block {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--lms-border);
  }

  .lesson-actions {
    margin-top: 1.2rem;
    padding: 1rem;
    border: 1px solid var(--lms-border);
    border-radius: 16px;
    background: var(--lms-surface-soft);
  }

  .lesson-actions-title {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--lms-text);
  }

  .status-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .status-card {
    position: relative;
    flex: 1 1 180px;
    min-width: 180px;
    cursor: pointer;
  }

  .status-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  .status-card span {
    display: block;
    padding: 0.95rem 1rem;
    border-radius: 14px;
    border: 1px solid var(--lms-border);
    background: var(--lms-surface);
    font-weight: 700;
    color: var(--lms-text-muted);
    text-align: center;
    transition: all 0.2s ease;
  }

  .status-card input:checked + span {
    border-color: var(--lms-primary);
    background: color-mix(in srgb, var(--lms-primary) 12%, var(--lms-surface));
    color: var(--lms-text);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lms-primary) 18%, transparent);
  }

  .code-block {
    position: relative;
    margin: 1.5rem 0;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--lms-code-bg) 70%, black);
    background: var(--lms-code-bg);
  width: 100%;
  }

  .code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: color-mix(in srgb, var(--lms-code-bg) 82%, black);
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .code-block-title {
    color: #cbd5e1;
    font-size: 0.85rem;
    font-weight: 600;
  }

  .copy-code-btn {
    border: 0;
    background: var(--lms-primary);
    color: #fff;
    padding: 0.45rem 0.8rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease;
  }

  .copy-code-btn:hover { opacity: 0.92; }

  .copy-code-btn.is-done {
    opacity: 0.85;
  }

  .code-block textarea,
  .code-block pre {
    margin: 0;
    width: 100%;
    padding: 1rem 1.25rem 1.25rem;
    overflow-x: auto;
    background: transparent;
    border: 0;
    outline: 0;
    resize: vertical;
    min-height: 160px;
    color: var(--lms-code-text);
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 0.92rem;
    line-height: 1.65;
    white-space: pre;
  }

  .code-block textarea[readonly] {
    cursor: text;
  }

  .code-lock-preview {
    margin: 1.3rem 0;
    padding: 1rem 1.1rem;
    border-radius: 16px;
    border: 1px dashed var(--lms-border);
    background: var(--lms-surface-soft);
  width: 100%;
  }

  .code-lock-preview pre {
    margin: 0 0 .7rem;
    overflow: auto;
    font-size: .9rem;
  }

  .code-lock-preview p {
    margin: 0;
  }

  .editor-note {
    margin-bottom: 1.5rem;
    padding: 1rem 1.1rem;
    border-radius: 16px;
    border: 1px dashed var(--lms-border);
    background: var(--lms-surface-soft);
    color: var(--lms-text);
   width: 100%;
  }

  .course-lock-box {
    margin-bottom: 1.5rem;
    padding: 1px;
    border-radius: 22px;
    background: linear-gradient(
      135deg,
      color-mix(in srgb, var(--lms-primary) 35%, transparent),
      transparent
    );
  width: 100%;
  }

  .course-lock-box__inner {
    padding: 1.4rem;
    border: 1px solid var(--lms-border);
    border-radius: 22px;
    background: var(--lms-surface);
  }

  .course-lock-box__kicker {
    margin: 0 0 .5rem;
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--lms-primary);
  }

  .course-lock-box__title {
    margin: 0 0 .75rem;
    font-size: 1.5rem;
    line-height: 1.15;
    color: var(--lms-text);
  }

  .course-lock-box__text {
    margin: 0 0 1rem;
    color: var(--lms-text-muted);
    line-height: 1.7;
  }

  .course-lock-box__actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 1rem;
  }

  .course-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 1rem;
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none;
    transition: .18s ease;
    border: 1px solid var(--lms-border);
    cursor: pointer;
  }

  .course-btn--primary {
    background: var(--lms-primary);
    color: #fff;
    border-color: transparent;
  }

  .course-btn--primary:hover { transform: translateY(-1px); color: #fff; }

  .course-btn--ghost {
    background: var(--lms-surface);
    color: var(--lms-text);
  }

  .course-btn--ghost:hover {
    background: color-mix(in srgb, var(--lms-surface) 85%, var(--lms-primary) 15%);
  }

  .course-lock-box__list {
    margin: 0;
    padding-left: 1.1rem;
    color: var(--lms-text-muted);
  }

  .course-lock-box__list li + li { margin-top: .35rem; }

  .floating-actions-left {
    position: fixed;
    left: 1rem;
    bottom: 1rem;
    z-index: 60;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .floating-icon-btn {
    width: 52px;
    height: 52px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--lms-border);
    background: var(--lms-surface);
    color: var(--lms-text);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    cursor: pointer;
    transition: transform .18s ease, background .18s ease, color .18s ease;
  }

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

  .floating-icon-btn svg {
    width: 20px;
    height: 20px;
    display: block;
  }

  .floating-icon-btn--save {
    background: var(--lms-primary);
    color: #fff;
    border-color: transparent;
  }

  .floating-icon-btn--save.is-unsaved {
    background: #dc2626 !important;
    border-color: #dc2626 !important;
    color: #fff !important;
  }

  .floating-icon-btn--save.is-success {
    background: #15803d !important;
    border-color: #15803d !important;
    color: #fff !important;
  }

  #mobileTocOpen {
    display: none;
  }

  .mobile-toc-panel {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: none;
  }

  .mobile-toc-panel.is-active {
    display: block;
  }

  .mobile-toc-overlay {
    position: absolute;
    inset: 0;
    background: rgba(17, 24, 39, 0.55);
  }

  .mobile-toc-content {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(88vw, 360px);
    background: var(--lms-surface);
    padding: 1.1rem;
    overflow-y: auto;
    box-shadow: 0 20px 50px rgba(0,0,0,0.18);
    border-right: 1px solid var(--lms-border);
  }

  .mobile-toc-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
  }

  .mobile-toc-close {
    min-height: 40px;
    padding: 0 .9rem;
    border-radius: 999px;
    border: 1px solid var(--lms-border);
    background: var(--lms-surface-soft);
    color: var(--lms-text);
    cursor: pointer;
  }

  @media screen and (max-width: 1023px) {
    .lms-layout {
      grid-template-columns: 1fr;
    }

    .lms-sidebar {
      display: none;
    }

    .lms-content {
      padding: 1rem 1rem 6rem;
    }

    .course-content > * {
      max-width: none;
    }

    .floating-actions-left {
      left: 0.75rem;
      bottom: 0.75rem;
      gap: 0.6rem;
    }

    .floating-icon-btn {
      width: 48px;
      height: 48px;
    }

    #mobileTocOpen {
      display: inline-flex;
    }
  }
  
  
  
  
  

.code-block.is-locked textarea {
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    caret-color: transparent;
    cursor: not-allowed;
}

.code-block.is-locked::after {
    content: "Copie réservée aux utilisateur enregistrés";
    position: absolute;
    inset: 49px 0 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.18);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    pointer-events: none;
}

.code-locked-msg {
    margin-top: 0.6rem;
    font-size: 0.92rem;
    color: var(--lms-text-muted);
}