/* Salle de classe : cartes, page de cours, lecteur de leçon */

/* —— Cartes —— */
.cr-card { display: flex; flex-direction: column; }
.cr-card .classroom-card-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.cr-card .classroom-card-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s; }
.cr-card:not(.locked):hover .classroom-card-cover img { transform: scale(1.04); }
.cr-card .classroom-card-body { display: flex; flex-direction: column; gap: 4px; flex: 1; padding: 16px 18px 18px; }
.cr-card .classroom-card-title { font-size: 16.5px; line-height: 1.3; margin: 0; text-transform: none; letter-spacing: -.01em; }
.cr-card .classroom-card-desc { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 2px 0 0; color: var(--text-muted); font-size: 13.5px; line-height: 1.5; min-height: 40px; }
.cr-card.is-draft { opacity: .82; }
.cr-done-badge { position: absolute; top: 12px; left: 12px; width: 30px; height: 30px; border-radius: 50%; background: #16a34a; color: #fff; font-weight: 800; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(22, 163, 74, .4); }
.cr-progress { display: flex; align-items: center; gap: 10px; margin: 10px 0 12px; font-size: 12px; font-weight: 700; color: var(--text-muted); white-space: nowrap; }
.cr-progress-bar { flex: 1; height: 7px; border-radius: 99px; background: var(--border); overflow: hidden; }
.cr-progress-bar i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, #203A7C, #493781, #80348A); }
.cr-cta { margin-top: auto; border: 0; border-radius: 999px; padding: 10px 18px; font: 700 13.5px var(--font-body, Inter, sans-serif); cursor: pointer; pointer-events: none; }
.cr-cta.new, .cr-cta.going { background: var(--primary); color: #fff; }
.cr-cta.done { background: rgba(22, 163, 74, .12); color: #15803d; }
.cr-cta.locked { background: var(--background-soft, #f3f4f8); color: var(--text-muted); }
.cr-card:not(.locked):hover .cr-cta.new, .cr-card:not(.locked):hover .cr-cta.going { box-shadow: 0 8px 20px rgba(32, 58, 124, .28); }

/* Menu admin d'une carte */
.cr-menu-btn { position: absolute; top: 10px; right: 10px; width: 34px; height: 34px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .92); color: #1f2937; font-size: 20px; line-height: 1; cursor: pointer; box-shadow: 0 2px 10px rgba(0, 0, 0, .18); z-index: 2; }
.cr-menu-btn:hover { background: #fff; }
.cr-menu { position: absolute; top: 48px; right: 10px; z-index: 5; min-width: 210px; padding: 6px; background: var(--background, #fff); border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 16px 40px rgba(0, 0, 0, .2); }
.cr-menu button { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; border: 0; background: transparent; padding: 9px 12px; border-radius: 9px; font: 500 13.5px var(--font-body, Inter, sans-serif); color: inherit; cursor: pointer; }
.cr-menu button:hover { background: var(--background-soft); }
.cr-menu button.danger { color: #c0392b; }

/* —— Page de cours —— */
.cr-lesson { display: flex; align-items: center; gap: 12px; }
.cr-num { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--background-soft, #f3f4f8); color: var(--text-muted); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.cr-lesson.active .cr-num { background: var(--primary); color: #fff; }
.cr-lesson.is-done .cr-num { background: rgba(22, 163, 74, .14); color: #15803d; }
.cr-lesson .classroom-lesson-title { flex: 1; min-width: 0; }
.cr-st { flex: none; font-size: 13px; }
.cr-st.done { color: #16a34a; font-weight: 800; }

/* —— Lecteur —— */
.cr-panel { max-width: 820px; }
.cr-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 600; letter-spacing: .02em; color: var(--text-muted); margin-bottom: 8px; }
.cr-chip { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700; }
.cr-chip.done { background: rgba(22, 163, 74, .14); color: #15803d; }
.cr-panel .classroom-panel-title-readonly { font-family: var(--font-display, Poppins, sans-serif); font-size: clamp(24px, 3.4vw, 32px); line-height: 1.2; letter-spacing: -.02em; margin: 0 0 22px; }
.cr-panel .classroom-viewer-content { font-size: 16.5px; line-height: 1.75; color: var(--text-body); }
.cr-panel .classroom-viewer-content h1, .cr-panel .classroom-viewer-content h2, .cr-panel .classroom-viewer-content h3 { font-family: var(--font-display, Poppins, sans-serif); margin: 1.6em 0 .5em; line-height: 1.25; }
.cr-panel .classroom-viewer-content p { margin: 0 0 1.1em; }
.cr-panel .classroom-viewer-content img, .cr-panel .classroom-viewer-content video { max-width: 100%; border-radius: 14px; }
.cr-panel .classroom-viewer-content iframe { width: 100%; aspect-ratio: 16 / 9; height: auto; border: 0; border-radius: 14px; }
.cr-panel .classroom-viewer-content blockquote { border-left: 4px solid var(--light-accent, #BDA5C8); margin: 1.2em 0; padding: 4px 18px; color: var(--text-muted); }
.cr-panel .classroom-viewer-content pre { background: #0f172a; color: #e2e8f0; padding: 16px 18px; border-radius: 12px; overflow-x: auto; font-size: 14px; }
.cr-empty { color: var(--text-muted); font-style: italic; }
.cr-transcript { margin: 18px 0; border: 1px solid var(--border); border-radius: 12px; padding: 4px 16px; }
.cr-transcript summary { cursor: pointer; font-weight: 700; padding: 12px 0; }
.cr-footer { position: sticky; bottom: 0; z-index: 3; display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 32px -4px 0; padding: 14px 4px; background: linear-gradient(180deg, rgba(255, 255, 255, 0), var(--background, #fff) 38%); }
.cr-footer-main { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.cr-btn { border: 0; border-radius: 999px; padding: 12px 24px; font: 700 14.5px var(--font-body, Inter, sans-serif); cursor: pointer; transition: transform .15s, box-shadow .15s; }
.cr-btn.primary { background: var(--primary); color: #fff; }
.cr-btn.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(32, 58, 124, .28); }
.cr-btn.ghost { background: var(--background, #fff); color: var(--text-body); border: 1.5px solid var(--border); }
.cr-btn.ghost:hover { border-color: var(--primary); }
.cr-hint { font-size: 13.5px; color: var(--text-muted); }
.cr-finished { font-weight: 700; color: #15803d; }

@media (max-width: 1023px) {
  .main.layout-classroom .classroom-sidebar { position: static; }
  .main.layout-classroom .classroom-lesson-list { max-height: 260px; overflow-y: auto; }
  .cr-footer { margin-left: -2px; margin-right: -2px; }
  .cr-btn { padding: 12px 18px; }
}
@media (max-width: 560px) {
  .cr-footer { flex-wrap: wrap; }
  .cr-footer-main { width: 100%; }
  .cr-footer-main .cr-btn { flex: 1; }
}

/* —— Sections (modules) d'un cours —— */
.cr-section { display: flex; align-items: center; gap: 6px; margin: 14px 0 4px; padding: 6px 6px 6px 4px; border-radius: 10px; }
.cr-section.drag-over { background: rgba(32, 58, 124, .08); outline: 2px dashed #203A7C; }
.cr-sec-toggle { flex: 1; min-width: 0; display: flex; align-items: center; gap: 6px; border: 0; background: none; padding: 4px; cursor: pointer; text-align: left; font: 700 12px var(--font-body, Inter, sans-serif); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted, #6b7280); }
.cr-sec-toggle .ic { flex: none; transition: transform .2s; }
.cr-section.closed .cr-sec-toggle .ic { transform: rotate(-90deg); }
.cr-sec-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cr-sec-count { flex: none; font-size: 11.5px; font-weight: 600; color: var(--text-muted, #6b7280); }
.cr-sec-tools { flex: none; display: flex; gap: 2px; opacity: 0; transition: opacity .15s; }
.cr-section:hover .cr-sec-tools, .cr-section:focus-within .cr-sec-tools { opacity: 1; }
.cr-sec-tools button { display: grid; place-items: center; width: 26px; height: 26px; border: 0; border-radius: 7px; background: none; color: var(--text-muted, #6b7280); cursor: pointer; }
.cr-sec-tools button:hover:not(:disabled) { background: var(--background-soft, #f3f4f8); color: var(--text-dark, #111827); }
.cr-sec-tools button:disabled { opacity: .3; cursor: default; }
.cr-sec-empty { margin: 2px 0 4px 8px; padding: 8px 12px; border: 1px dashed var(--border, #e5e7eb); border-radius: 10px; font-size: 12.5px; color: var(--text-muted, #6b7280); }
.classroom-add-row { display: flex; gap: 8px; }
.classroom-add-row .classroom-add-page { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.classroom-sec-pick { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--text-muted, #6b7280); }
.classroom-sec-pick select { max-width: 160px; padding: 6px 8px; border: 1px solid var(--border, #e5e7eb); border-radius: 8px; font: inherit; color: var(--text-dark, #111827); background: #fff; }
@media (hover: none), (max-width: 820px) { .cr-sec-tools { opacity: 1; } }