/* ============================================================
   SORIA Académie — styles des leçons (concrete-first).
   Dépend des design tokens définis dans styles.css (--forest, --brown, --berry, --cream...).
   Portée : tout est préfixé par .lesson-body pour ne pas déborder sur le reste du site.
   ============================================================ */

.lesson-body {
  --l-forest: var(--forest, #2D5F4C);
  --l-deep: var(--deep-forest, #1F4537);
  --l-brown: var(--brown, #2B2018);
  --l-berry: var(--berry, #B23B2E);
  --l-cream: var(--cream, #F6F2E9);
  --l-paper: var(--light-cream, #FBF8F1);
  --l-line: var(--beige, #E8DFD0);
  --l-forest-soft: #e7eee9;
  --l-berry-soft: #f7e6e2;
  --l-muted: #6f6457;

  max-width: 760px;
  margin: 0 auto;
  padding: 12px 0 40px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--l-brown);
}

.lesson-body h2 {
  font-family: var(--font-display, 'Fraunces', serif);
  font-weight: 600;
  font-size: 1.7rem;
  letter-spacing: -0.01em;
  color: var(--l-brown);
  margin: 44px 0 6px;
}
.lesson-body h2 .num {
  font-size: 0.8rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-weight: 600;
  color: var(--l-forest);
  vertical-align: middle;
  margin-right: 10px;
  border: 1px solid var(--l-forest);
  border-radius: 6px;
  padding: 2px 7px;
}
.lesson-body h3 {
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--l-deep);
  margin: 24px 0 4px;
}
.lesson-body p { margin: 14px 0; }
.lesson-body code {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.88em;
  background: #efe8da;
  color: var(--l-berry);
  padding: 2px 6px;
  border-radius: 5px;
}

/* Idée reçue (le crochet — sommet "Image" invisible du triangle) */
.lesson-body .myth {
  background: var(--l-berry-soft);
  border: 1px solid #eccfc9;
  border-left: 4px solid var(--l-berry);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 30px 0;
}
.lesson-body .myth .tag {
  font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--l-berry); display: block; margin-bottom: 8px;
}
.lesson-body .myth p:first-of-type { font-weight: 500; color: var(--l-brown); font-size: 1.08rem; }

/* Objectifs */
.lesson-body .goals {
  background: var(--l-paper); border: 1px solid var(--l-line); border-radius: 14px;
  padding: 22px 24px; margin: 26px 0;
}
.lesson-body .goals h3 { margin-top: 0; }
.lesson-body .goals ul { list-style: none; margin: 10px 0 0; padding: 0; }
.lesson-body .goals li { position: relative; padding: 6px 0 6px 30px; border-top: 1px solid var(--l-line); }
.lesson-body .goals li:first-child { border-top: none; }
.lesson-body .goals li::before {
  content: ""; position: absolute; left: 2px; top: 14px; width: 9px; height: 9px;
  border: 2px solid var(--l-forest); border-radius: 50%;
}

/* Expérience (bloc concrete-first) */
.lesson-body .xp {
  border: 1px solid var(--l-line); border-radius: 14px; background: var(--l-paper);
  padding: 22px 24px; margin: 26px 0;
}
.lesson-body .xp .step {
  font-family: var(--font-mono, monospace); font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--l-berry); display: block; margin-bottom: 2px;
}
.lesson-body .xp h3 { margin-top: 0; font-size: 1.18rem; color: var(--l-brown); }
.lesson-body .label {
  font-size: 12px; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase;
  display: inline-block; margin: 18px 0 6px;
}
.lesson-body .label.man { color: var(--l-deep); }
.lesson-body .label.obs { color: var(--l-berry); }

/* Code blocks */
.lesson-body pre {
  background: var(--l-brown); color: #f3ead9; border-radius: 12px; padding: 15px 18px; margin: 8px 0 4px;
  overflow-x: auto; font-family: var(--font-mono, monospace); font-size: 14px; line-height: 1.6;
}
.lesson-body pre.cmd::before { content: "$ "; color: #7bbf9c; font-weight: 600; }
.lesson-body pre.out { background: #fbf7ee; color: #4a4034; border: 1px solid var(--l-line); }
.lesson-body pre code { background: none; color: inherit; padding: 0; }

/* Observe */
.lesson-body .observe {
  border-left: 3px solid var(--l-berry); background: var(--l-berry-soft);
  padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 10px 0; font-size: 15.5px;
}
.lesson-body .observe b { color: var(--l-berry); }

/* Reveal — "Comprends" (le savoir se dévoile APRÈS la manipulation) */
.lesson-body details.reveal {
  margin: 14px 0 2px; border: 1px solid #cfe0d6; border-radius: 12px;
  background: var(--l-forest-soft); overflow: hidden;
}
.lesson-body details.reveal summary {
  cursor: pointer; list-style: none; padding: 13px 18px; font-weight: 600; color: var(--l-deep);
  display: flex; align-items: center; gap: 10px; user-select: none;
}
.lesson-body details.reveal summary::-webkit-details-marker { display: none; }
.lesson-body details.reveal summary::before {
  content: "▶"; font-size: 11px; color: var(--l-forest); transition: transform 0.2s ease;
}
.lesson-body details.reveal[open] summary::before { transform: rotate(90deg); }
.lesson-body details.reveal summary .hint { margin-left: auto; font-weight: 400; font-size: 13px; color: var(--l-muted); }
.lesson-body details.reveal .rbody { padding: 2px 18px 16px; }

/* Tableau comparatif */
.lesson-body .tablewrap { overflow-x: auto; margin: 18px 0; }
.lesson-body table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 460px; }
.lesson-body th {
  background: var(--l-forest); color: var(--l-cream); text-align: left; font-weight: 600;
  padding: 10px 14px; font-size: 13px;
}
.lesson-body td { padding: 10px 14px; border-bottom: 1px solid var(--l-line); vertical-align: top; }
.lesson-body tr:last-child td { border-bottom: none; }
.lesson-body td:first-child { font-weight: 600; color: var(--l-deep); }

/* Récap */
.lesson-body .recap { background: var(--l-forest); color: #eef4f0; border-radius: 14px; padding: 26px; margin: 46px 0 10px; }
.lesson-body .recap h2 { color: #fff; margin-top: 0; }
.lesson-body .recap .num { color: #bfe0cf; border-color: #bfe0cf; }
.lesson-body .recap p { color: #e2ede6; }
.lesson-body .recap strong { color: #fff; }

/* Mini-projet */
.lesson-body .project { border: 2px solid var(--l-forest); border-radius: 14px; padding: 26px; margin: 40px 0 10px; background: var(--l-paper); position: relative; }
.lesson-body .project .ribbon {
  position: absolute; top: -13px; left: 24px; background: var(--l-berry); color: #fff;
  font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 5px 14px; border-radius: 999px;
}
.lesson-body .project h2 { margin-top: 8px; }
.lesson-body ol.steps { margin: 14px 0; padding-left: 20px; }
.lesson-body ol.steps li { margin: 9px 0; padding-left: 6px; }
.lesson-body .check { list-style: none; padding: 0; margin: 14px 0 0; }
.lesson-body .check li { position: relative; padding: 7px 0 7px 30px; border-top: 1px solid var(--l-line); font-size: 15.5px; }
.lesson-body .check li:first-child { border-top: none; }
.lesson-body .check li::before {
  content: ""; position: absolute; left: 2px; top: 11px; width: 16px; height: 16px;
  border: 2px solid var(--l-forest); border-radius: 4px;
}
.lesson-body .filrouge { margin-top: 18px; padding: 14px 16px; background: var(--l-forest-soft); border-radius: 10px; font-size: 15px; color: var(--l-deep); }

/* En-tête de leçon (hero) */
.lesson-hero { max-width: 760px; margin: 0 auto; padding: 40px 0 8px; }
.lesson-hero .eyebrow {
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--forest); display: flex; align-items: center; gap: 10px; margin-bottom: 18px;
}
.lesson-hero .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--berry); display: inline-block; border-radius: 2px; }
.lesson-hero h1 {
  font-family: var(--font-display, 'Fraunces', serif); font-weight: 600;
  font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.08; letter-spacing: -0.015em;
  color: var(--brown); margin: 0 0 16px;
}
.lesson-hero .thesis { font-size: 1.12rem; color: #6f6457; max-width: 60ch; margin: 0 0 20px; }
.lesson-hero .meta { display: flex; flex-wrap: wrap; gap: 10px; }
.lesson-hero .chip {
  font-size: 13px; font-weight: 500; color: var(--deep-forest); background: #e7eee9;
  border: 1px solid #d3e0d8; padding: 6px 13px; border-radius: 999px;
}

/* Barre de progression (bas de leçon) */
.lesson-progress {
  max-width: 760px; margin: 30px auto 0; padding: 20px; border: 1px solid var(--l-line);
  border-radius: 14px; background: var(--l-paper); display: flex; align-items: center;
  justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.lesson-progress .msg { font-size: 15px; color: var(--l-muted); }
.lesson-progress button {
  font: inherit; font-weight: 600; cursor: pointer; border: none; border-radius: 999px;
  padding: 11px 20px; background: var(--l-forest); color: #fff;
}
.lesson-progress button[disabled] { opacity: 0.6; cursor: default; }
.lesson-progress button.done { background: var(--l-deep); }

@media (max-width: 600px) {
  .lesson-body { font-size: 16px; }
}