/* ============================================================
   LEARNING — Module Apprentissage — Athleon
   ============================================================ */

/* ── Variables ────────────────────────────────────────────── */
:root {
  --lrn-bg:       #0b0d0f;
  --lrn-card:     #15181c;
  --lrn-card2:    #1a1e24;
  --lrn-line:     rgba(255,255,255,.07);
  --lrn-text:     #f3f4f6;
  --lrn-muted:    #9aa3af;
  --lrn-accent:   #10b981;
  --lrn-accent2:  #0ea5e9;
  --lrn-amber:    #f59e0b;
  --lrn-red:      #ef4444;
  --lrn-purple:   #a78bfa;
  --lrn-radius:   16px;
  --lrn-radius-sm: 10px;
}

/* ── Chip utilitaires ─────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .2em .6em;
  border-radius: 99px;
  font-size: .75rem;
  font-weight: 600;
  background: rgba(255,255,255,.07);
  color: var(--lrn-muted);
  white-space: nowrap;
}
.chip-green  { background: rgba(16,185,129,.15); color: #6ee7b7; }
.chip-amber  { background: rgba(245,158,11,.15);  color: #fcd34d; }
.chip-blue   { background: rgba(14,165,233,.15);  color: #7dd3fc; }
.chip-red    { background: rgba(239,68,68,.15);   color: #fca5a5; }
.chip-purple { background: rgba(167,139,250,.15); color: #c4b5fd; }
.chip-done   { background: rgba(16,185,129,.2);   color: #34d399; }

/* ── Breadcrumb ───────────────────────────────────────────── */
.lrn-breadcrumb {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .83rem;
  color: var(--lrn-muted);
  margin-bottom: 1.5rem;
}
.lrn-breadcrumb a {
  color: var(--lrn-accent);
  text-decoration: none;
}
.lrn-breadcrumb a:hover { text-decoration: underline; }
.lrn-breadcrumb .sep { opacity: .4; }

/* ── Wrapper principal ────────────────────────────────────── */
.lrn-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

/* ════════════════════════════════════════════════════════════
   HUB PUBLIC — index.php
   ════════════════════════════════════════════════════════════ */

.lrn-hero {
  background: linear-gradient(135deg, #0f2027 0%, #1a2940 50%, #0f2027 100%);
  border: 1px solid var(--lrn-line);
  border-radius: 20px;
  padding: 3rem 2.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}
.lrn-hero::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 220px; height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16,185,129,.2) 0%, transparent 70%);
  pointer-events: none;
}
.lrn-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  color: var(--lrn-text);
  margin: 0 0 .75rem;
  line-height: 1.15;
}
.lrn-hero p {
  color: var(--lrn-muted);
  font-size: 1rem;
  margin: 0 0 1.5rem;
  max-width: 560px;
  line-height: 1.6;
}
.lrn-hero-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}
.lrn-stats-row {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--lrn-line);
}
.lrn-stat {
  display: flex;
  flex-direction: column;
}
.lrn-stat .val {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--lrn-accent);
  line-height: 1;
}
.lrn-stat .lbl {
  font-size: .75rem;
  color: var(--lrn-muted);
  margin-top: .15rem;
}

/* Grille sections */
.ls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.ls-card {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  padding: 1.4rem;
  text-decoration: none;
  color: var(--lrn-text);
  transition: border-color .2s, transform .2s, box-shadow .2s;
  position: relative;
  overflow: hidden;
}
.ls-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(16,185,129,.04), transparent);
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
}
.ls-card:hover {
  border-color: rgba(16,185,129,.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,.35);
}
.ls-card:hover::after { opacity: 1; }

.ls-icon {
  font-size: 2rem;
  line-height: 1;
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16,185,129,.1);
  border-radius: 12px;
  flex-shrink: 0;
}
.ls-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--lrn-text);
}
.ls-desc {
  font-size: .83rem;
  color: var(--lrn-muted);
  margin: .2rem 0 0;
  line-height: 1.5;
}
.ls-meta {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  margin-top: auto;
}
.ls-progress {
  margin-top: .25rem;
}
.ls-progress-bar {
  height: 4px;
  background: var(--lrn-line);
  border-radius: 99px;
  overflow: hidden;
}
.ls-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--lrn-accent), #34d399);
  border-radius: 99px;
  transition: width .6s ease;
}
.ls-progress-label {
  font-size: .72rem;
  color: var(--lrn-muted);
  margin-top: .3rem;
  display: flex;
  justify-content: space-between;
}

/* ════════════════════════════════════════════════════════════
   SECTION PAGE — section.php
   ════════════════════════════════════════════════════════════ */

.lrn-section-hero {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: 20px;
  padding: 2rem;
  margin-bottom: 1.5rem;
}
.lrn-section-icon {
  font-size: 2.6rem;
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16,185,129,.1);
  border-radius: 14px;
  flex-shrink: 0;
}
.lrn-section-hero h1 {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  line-height: 1.2;
}
.lrn-section-hero p {
  color: var(--lrn-muted);
  font-size: .93rem;
  margin: 0;
  line-height: 1.5;
}
.lrn-section-progress {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.lrn-section-progress .bar {
  height: 6px;
  background: var(--lrn-line);
  border-radius: 99px;
  overflow: hidden;
  margin-top: .5rem;
}
.lrn-section-progress .bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--lrn-accent), #34d399);
  border-radius: 99px;
  transition: width .6s ease;
}

/* Grille cours */
.lc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1rem;
}

.lc-card {
  display: flex;
  flex-direction: column;
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--lrn-text);
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.lc-card:hover {
  border-color: rgba(14,165,233,.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,.3);
}
.lc-cover {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}
.lc-cover-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  background: linear-gradient(135deg, #1a1e24, #0f1317);
  color: var(--lrn-muted);
}
.lc-body {
  padding: 1rem 1rem .75rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  flex: 1;
}
.lc-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.35;
}
.lc-excerpt {
  font-size: .82rem;
  color: var(--lrn-muted);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}
.lc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .6rem 1rem;
  border-top: 1px solid var(--lrn-line);
  font-size: .78rem;
  color: var(--lrn-muted);
}
.lc-done-badge {
  color: #34d399;
  font-weight: 600;
  font-size: .78rem;
}

/* ════════════════════════════════════════════════════════════
   COURSE READER — course.php
   ════════════════════════════════════════════════════════════ */

/* Barre de progression scroll */
.lrn-scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--lrn-accent), var(--lrn-accent2));
  z-index: 9999;
  transition: width .1s linear;
}

.lrn-reader-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2rem;
  align-items: start;
}

/* Contenu principal */
.lrn-reader {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: 20px;
  padding: 2.5rem;
}
.lrn-reader-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--lrn-line);
}
.lrn-reader-header h1 {
  font-size: 1.8rem;
  font-weight: 900;
  margin: 0 0 .75rem;
  line-height: 1.2;
}
.lrn-reader-meta {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
}

/* Table des matières (sticky) */
.lrn-toc {
  position: sticky;
  top: 80px;
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  padding: 1.25rem;
}
.lrn-toc h4 {
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--lrn-muted);
  margin: 0 0 .75rem;
}
.lrn-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}
.lrn-toc-list a {
  display: block;
  font-size: .82rem;
  color: var(--lrn-muted);
  text-decoration: none;
  padding: .3rem .5rem;
  border-radius: 6px;
  transition: background .15s, color .15s;
  line-height: 1.4;
}
.lrn-toc-list a:hover,
.lrn-toc-list a.active {
  background: rgba(16,185,129,.1);
  color: var(--lrn-accent);
}

/* Navigation cours */
.lrn-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--lrn-line);
  flex-wrap: wrap;
}
.lrn-nav a, .lrn-nav button {
  text-decoration: none;
}
.btn-complete {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.4rem;
  background: linear-gradient(135deg, var(--lrn-accent), #059669);
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: opacity .2s, transform .15s;
}
.btn-complete:hover { opacity: .88; transform: translateY(-1px); }
.btn-complete.done {
  background: rgba(16,185,129,.15);
  color: #34d399;
}

/* ════════════════════════════════════════════════════════════
   BLOCS DE CONTENU
   ════════════════════════════════════════════════════════════ */

.lrn-blocks {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Texte */
.lb-text {
  font-size: .97rem;
  line-height: 1.75;
  color: var(--lrn-text);
}
.lb-text h2 { font-size: 1.3rem; font-weight: 800; margin: 1.5rem 0 .6rem; color: var(--lrn-text); }
.lb-text h3 { font-size: 1.1rem; font-weight: 700; margin: 1.2rem 0 .5rem; color: var(--lrn-text); }
.lb-text p  { margin: 0 0 .9rem; }
.lb-text ul, .lb-text ol { padding-left: 1.4rem; margin: 0 0 .9rem; }
.lb-text li { margin-bottom: .3rem; }
.lb-text strong { color: var(--lrn-text); }
.lb-text a { color: var(--lrn-accent); }

/* Image */
.lb-image { text-align: center; }
.lb-image img {
  max-width: 100%;
  border-radius: var(--lrn-radius);
  border: 1px solid var(--lrn-line);
}
.lb-image figcaption {
  font-size: .8rem;
  color: var(--lrn-muted);
  margin-top: .5rem;
  font-style: italic;
}

/* Vidéo */
.lb-video {
  border-radius: var(--lrn-radius);
  overflow: hidden;
  border: 1px solid var(--lrn-line);
  background: #000;
}
.lb-video iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  border: none;
}

/* Callout boxes */
.lb-callout {
  display: flex;
  gap: .9rem;
  padding: 1rem 1.25rem;
  border-radius: var(--lrn-radius-sm);
  border-left: 3px solid;
  font-size: .93rem;
  line-height: 1.6;
}
.lb-callout-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: .05em; }
.lb-callout-body { flex: 1; }
.lb-callout-title { font-weight: 700; margin-bottom: .2rem; font-size: .9rem; }

.lb-tip-box     { background: rgba(16,185,129,.08); border-color: var(--lrn-accent); color: #a7f3d0; }
.lb-tip-box     .lb-callout-title { color: #34d399; }
.lb-warning-box { background: rgba(245,158,11,.08); border-color: var(--lrn-amber);  color: #fde68a; }
.lb-warning-box .lb-callout-title { color: #fcd34d; }
.lb-info-box    { background: rgba(14,165,233,.08);  border-color: var(--lrn-accent2); color: #bae6fd; }
.lb-info-box    .lb-callout-title { color: #7dd3fc; }

/* Citation */
.lb-quote {
  border-left: 4px solid var(--lrn-accent);
  padding: 1rem 1.5rem;
  background: var(--lrn-card2);
  border-radius: 0 var(--lrn-radius-sm) var(--lrn-radius-sm) 0;
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--lrn-muted);
}
.lb-quote cite {
  display: block;
  margin-top: .6rem;
  font-size: .8rem;
  font-style: normal;
  color: var(--lrn-accent);
  font-weight: 600;
}

/* Séparateur */
.lb-separator {
  border: none;
  border-top: 1px solid var(--lrn-line);
  margin: .5rem 0;
}

/* Checklist */
.lb-checklist {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}
.lb-checklist li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .93rem;
  line-height: 1.5;
}
.lb-check-box {
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid rgba(255,255,255,.2);
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: .15em;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
}
.lb-check-box.checked {
  background: var(--lrn-accent);
  border-color: var(--lrn-accent);
  color: #fff;
}

/* Code */
.lb-code {
  background: #0d1117;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--lrn-radius-sm);
  overflow: hidden;
}
.lb-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .5rem 1rem;
  background: rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.07);
  font-size: .75rem;
  color: var(--lrn-muted);
}
.lb-code pre {
  margin: 0;
  padding: 1.1rem;
  overflow-x: auto;
  font-size: .85rem;
  line-height: 1.65;
  font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  color: #e2e8f0;
}

/* ════════════════════════════════════════════════════════════
   ATLAS MUSCULAIRE
   ════════════════════════════════════════════════════════════ */

.atlas-section {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: 20px;
  padding: 2rem;
  margin-top: 3rem;
}
.atlas-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.atlas-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 .3rem;
  color: var(--lrn-text);
}
.atlas-subtitle {
  font-size: .85rem;
  color: var(--lrn-muted);
  margin: 0;
}
.atlas-view-toggle {
  display: flex;
  gap: .4rem;
}
.atl-btn {
  padding: .4rem .9rem;
  border-radius: 8px;
  border: 1px solid var(--lrn-line);
  background: transparent;
  color: var(--lrn-muted);
  font-size: .82rem;
  cursor: pointer;
  transition: all .15s;
}
.atl-btn.active {
  background: var(--lrn-accent);
  border-color: var(--lrn-accent);
  color: #fff;
  font-weight: 600;
}
.atlas-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: start;
}
.atlas-body-wrap { display: flex; flex-direction: column; align-items: center; gap: .75rem; }
.body-svg {
  width: 100%;
  max-width: 200px;
  display: none;
}
.body-svg.active { display: block; }

/* Silhouette */
.body-silhouette > * {
  fill: rgba(255,255,255,.06);
  stroke: rgba(255,255,255,.12);
  stroke-width: .8;
}

/* Zones musculaires */
.muscle-zone { cursor: pointer; outline: none; }
.mz {
  fill: rgba(16,185,129,.18);
  stroke: rgba(16,185,129,.45);
  stroke-width: .8;
  transition: fill .2s, stroke .2s;
}
.mz-label {
  fill: rgba(16,185,129,.7);
  font-size: 7px;
  font-weight: 700;
  text-anchor: middle;
  pointer-events: none;
  font-family: inherit;
}
.muscle-zone:hover .mz,
.muscle-zone:focus .mz {
  fill: rgba(16,185,129,.35);
  stroke: #10b981;
}
.muscle-zone.selected .mz {
  fill: rgba(16,185,129,.45);
  stroke: #34d399;
  stroke-width: 1.2;
  filter: drop-shadow(0 0 4px rgba(16,185,129,.6));
}
.atlas-legend {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .72rem;
  color: var(--lrn-muted);
}
.atl-legend-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(16,185,129,.4);
  border: 1px solid var(--lrn-accent);
  display: inline-block;
}

/* Panneau résultats atlas */
.atlas-panel {
  background: var(--lrn-card2);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  min-height: 280px;
  display: flex;
  flex-direction: column;
}
.atlas-panel-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: .75rem;
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--lrn-muted);
  font-size: .88rem;
}
.atlas-empty-icon { font-size: 2rem; }
.atlas-muscle-list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  justify-content: center;
  margin-top: .5rem;
}
.atlas-muscle-pill {
  padding: .3rem .75rem;
  border-radius: 99px;
  border: 1px solid var(--lrn-line);
  background: transparent;
  color: var(--lrn-muted);
  font-size: .75rem;
  cursor: pointer;
  transition: all .15s;
}
.atlas-muscle-pill:hover {
  background: rgba(16,185,129,.1);
  border-color: var(--lrn-accent);
  color: var(--lrn-accent);
}
.atlas-panel-result {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem;
  gap: .75rem;
}
.atlas-result-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
}
.atlas-result-header h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  flex: 1;
}
.atlas-close {
  border: none;
  background: transparent;
  color: var(--lrn-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: .2rem .4rem;
  border-radius: 6px;
  transition: background .15s;
}
.atlas-close:hover { background: rgba(255,255,255,.08); color: var(--lrn-text); }
.atlas-exo-list {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  overflow-y: auto;
  max-height: 320px;
  padding-right: .25rem;
}
.atlas-exo-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .6rem .85rem;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--lrn-line);
  border-radius: 8px;
  text-decoration: none;
  color: var(--lrn-text);
  font-size: .85rem;
  transition: background .15s, border-color .15s;
}
.atlas-exo-card:hover {
  background: rgba(16,185,129,.07);
  border-color: rgba(16,185,129,.25);
}
.atlas-exo-name { font-weight: 600; }
.atlas-exo-chips { display: flex; gap: .3rem; flex-shrink: 0; }
.atlas-no-exo { color: var(--lrn-muted); font-size: .85rem; padding: 1rem 0; text-align: center; }
.atlas-all-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1rem;
  border: 1px solid var(--lrn-line);
  border-radius: 8px;
  color: var(--lrn-muted);
  font-size: .82rem;
  text-decoration: none;
  margin-top: auto;
  transition: border-color .15s, color .15s;
  align-self: flex-start;
}
.atlas-all-btn:hover { border-color: var(--lrn-accent); color: var(--lrn-accent); }

/* ════════════════════════════════════════════════════════════
   ADMIN INTERFACE
   ════════════════════════════════════════════════════════════ */

.adm-lrn-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

/* Nav admin */
.adm-nav {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

/* Hero admin */
.adm-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.adm-hero h1 {
  font-size: 1.6rem;
  font-weight: 900;
  margin: 0;
  color: var(--lrn-text);
}

/* Stats admin */
.adm-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: .75rem;
  margin-bottom: 2rem;
}
.adm-stat-box {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  padding: 1.25rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}
.adm-stat-box .val {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--lrn-accent);
}
.adm-stat-box .lbl {
  font-size: .78rem;
  color: var(--lrn-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* Cards actions admin */
.adm-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.adm-card {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: border-color .2s;
}
.adm-card:hover { border-color: rgba(16,185,129,.3); }
.adm-card h3 { margin: 0; font-size: 1.05rem; font-weight: 700; }
.adm-card p  { margin: 0; font-size: .85rem; color: var(--lrn-muted); line-height: 1.5; flex: 1; }

/* Table admin */
.adm-table-wrap {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  overflow: hidden;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}
.adm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
}
.adm-table th {
  padding: .75rem 1rem;
  text-align: left;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--lrn-muted);
  background: rgba(255,255,255,.025);
  border-bottom: 1px solid var(--lrn-line);
  white-space: nowrap;
}
.adm-table td {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--lrn-line);
  vertical-align: middle;
}
.adm-table tr:last-child td { border-bottom: none; }
.adm-table tr:hover td { background: rgba(255,255,255,.02); }

/* Status pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2em .65em;
  border-radius: 99px;
  font-size: .73rem;
  font-weight: 600;
  white-space: nowrap;
}
.status-published { background: rgba(16,185,129,.15); color: #34d399; }
.status-draft     { background: rgba(155,155,155,.1);  color: #9ca3af; }

/* Éditeur de blocs */
.block-editor {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.block-item {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius-sm);
  overflow: hidden;
  transition: border-color .2s;
}
.block-item:hover { border-color: rgba(16,185,129,.25); }
.block-item-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .65rem 1rem;
  background: rgba(255,255,255,.025);
  border-bottom: 1px solid var(--lrn-line);
  cursor: grab;
}
.block-item-header:active { cursor: grabbing; }
.block-drag-handle {
  color: var(--lrn-muted);
  font-size: .9rem;
  cursor: grab;
}
.block-type-badge {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--lrn-accent);
  background: rgba(16,185,129,.1);
  padding: .15em .6em;
  border-radius: 6px;
}
.block-item-actions {
  margin-left: auto;
  display: flex;
  gap: .35rem;
}
.block-item-body { padding: .9rem 1rem; }
.btn-add-block {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem 1.1rem;
  border: 1px dashed rgba(16,185,129,.35);
  border-radius: 10px;
  background: transparent;
  color: var(--lrn-accent);
  font-size: .85rem;
  cursor: pointer;
  transition: background .15s, border-color .15s;
  width: 100%;
  justify-content: center;
}
.btn-add-block:hover {
  background: rgba(16,185,129,.07);
  border-color: var(--lrn-accent);
}

/* Formulaire général (shared avec admin) */
.fg {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.fg label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--lrn-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.fg input, .fg select, .fg textarea {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--lrn-line);
  border-radius: 8px;
  padding: .55rem .85rem;
  color: var(--lrn-text);
  font-size: .9rem;
  font-family: inherit;
  width: 100%;
  box-sizing: border-box;
  transition: border-color .15s;
}
.fg input:focus, .fg select:focus, .fg textarea:focus {
  outline: none;
  border-color: var(--lrn-accent);
  background: rgba(16,185,129,.04);
}
.fg textarea { resize: vertical; min-height: 80px; }
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: .75rem;
}

/* Alertes */
.alert {
  padding: .75rem 1rem;
  border-radius: 10px;
  font-size: .88rem;
  margin-bottom: 1rem;
  border: 1px solid;
}
.alert-ok  { background: rgba(16,185,129,.08); border-color: rgba(16,185,129,.25); color: #6ee7b7; }
.alert-err { background: rgba(239,68,68,.08);  border-color: rgba(239,68,68,.2);   color: #fca5a5; }

/* Section panel (form card) */
.form-card {
  background: var(--lrn-card);
  border: 1px solid var(--lrn-line);
  border-radius: var(--lrn-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-card h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--lrn-text);
}

/* Détail panel inline (édition section) */
.edit-panel {
  background: rgba(255,255,255,.025);
  border-top: 1px solid var(--lrn-line);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
details summary {
  cursor: pointer;
  list-style: none;
}
details summary::marker,
details summary::-webkit-details-marker { display: none; }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .lrn-reader-layout {
    grid-template-columns: 1fr;
  }
  .lrn-toc { position: static; }
  .atlas-layout {
    grid-template-columns: 1fr;
  }
  .atlas-body-wrap { flex-direction: row; align-items: flex-start; }
  .body-svg { max-width: 140px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .lrn-hero { padding: 1.75rem 1.25rem; }
  .lrn-reader { padding: 1.5rem 1rem; }
  .lrn-section-hero { flex-direction: column; gap: .75rem; }
  .atlas-section { padding: 1.25rem; }
  .atlas-header { flex-direction: column; align-items: flex-start; }
  .atlas-body-wrap { flex-direction: column; align-items: center; }
  .body-svg { max-width: 180px; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .lrn-stats-row { gap: 1rem; }
  .ls-grid, .lc-grid { grid-template-columns: 1fr; }
  .adm-cards { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   LIGHT MODE
   ════════════════════════════════════════════════════════════ */

html.light-mode {
  --lrn-bg:    #f8fafc;
  --lrn-card:  #ffffff;
  --lrn-card2: #f1f5f9;
  --lrn-line:  rgba(0,0,0,.08);
  --lrn-text:  #0f172a;
  --lrn-muted: #64748b;
}
html.light-mode .lrn-hero {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #ecfdf5 100%);
}
html.light-mode .body-silhouette > * {
  fill: rgba(0,0,0,.05);
  stroke: rgba(0,0,0,.15);
}
html.light-mode .lc-cover-placeholder {
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}
html.light-mode .lb-code {
  background: #1e293b;
}
html.light-mode .adm-table tr:hover td {
  background: rgba(0,0,0,.02);
}
html.light-mode .fg input,
html.light-mode .fg select,
html.light-mode .fg textarea {
  background: #f8fafc;
  border-color: rgba(0,0,0,.12);
  color: #0f172a;
}
html.light-mode .fg input:focus,
html.light-mode .fg select:focus,
html.light-mode .fg textarea:focus {
  border-color: var(--lrn-accent);
  background: rgba(16,185,129,.03);
}