/* Pages livre de la boutique Mathovore (manuels-scolaires-maths/<slug>/)
   et bloc « collection » de la vitrine. S'appuie sur boutique.css.
   Cache 10 ans : monter LIVRE_CSS_VERSION dans build.py a chaque retouche. */

/* --- vitrine : lien vers la page du livre, bouton « Voir les livres en detail » --- */
.nom-livre a { color: inherit; text-decoration: none; }
.nom-livre a:hover { color: var(--c2); text-decoration: underline; }
.vers-page { display: inline-block; margin-top: 10px; font-weight: 700; color: var(--c2); text-decoration: none; }
.vers-page:hover { text-decoration: underline; }
.voir-detail { display: inline-flex; align-items: center; gap: 8px; margin: 22px auto 0; padding: 13px 26px; border-radius: 50px;
  background: linear-gradient(135deg, #2563eb, #7c3aed); color: #fff; font-weight: 700; font-size: 1.05rem; text-decoration: none;
  box-shadow: var(--ombre-forte); }
.voir-detail:hover { color: #fff; transform: translateY(-2px); }
#livres-en-detail, #collection { scroll-margin-top: 10px; }

/* --- collection (maillage des 24 pages) --- */
.collection { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.collection-etape h3 { margin: 0 0 12px; color: var(--encre); font-size: 1.1rem; }
.collection-etape ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.collection-etape li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--bord);
  border-radius: 14px; padding: 10px 12px; box-shadow: var(--ombre); }
.collection-etape .pastille-niveau { min-width: 88px; font-weight: 800; color: #fff; padding: 4px 10px; border-radius: 30px;
  background: linear-gradient(135deg, var(--c1), var(--c2)); text-align: center; }
.collection-etape a { font-size: .92rem; font-weight: 600; color: var(--c2); text-decoration: none; padding: 3px 10px; border-radius: 20px;
  border: 1px solid var(--bord); }
.collection-etape a:hover { background: var(--ciel); }
.collection-etape a[aria-current] { background: linear-gradient(135deg, var(--c1), var(--c2)); color: #fff; border-color: transparent; }

/* --- fil d'Ariane --- */
.fil { font-size: .88rem; color: var(--pale); padding-top: 18px; }
.fil a { color: var(--doux); }
.fil span[aria-hidden] { margin: 0 4px; }

/* --- tete de page --- */
.livre-tete { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: 44px; align-items: start; padding-top: 22px; padding-bottom: 46px; }
.livre-visuel { position: relative; }
.livre-visuel img { width: 100%; border-radius: 10px; box-shadow: 0 20px 45px rgba(15, 23, 42, .28); }
.badge-classe { position: absolute; top: -12px; left: -12px; z-index: 1; padding: 8px 16px; border-radius: 30px; color: #fff; font-weight: 800;
  background: linear-gradient(135deg, var(--c1), var(--c2)); box-shadow: 0 6px 16px rgba(0, 0, 0, .2); }
.livre-infos .surtitre { margin: 0; color: var(--c2); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: .85rem; }
.livre-infos h1 { margin: 8px 0 14px; font-size: clamp(1.7rem, 3.3vw, 2.45rem); line-height: 1.15; color: var(--encre); }
.accroche { font-size: 1.12rem; color: var(--doux); margin: 0 0 20px; max-width: 64ch; }
.fiche-technique { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; margin: 0 0 22px; }
.fiche-technique div { background: var(--neige); border: 1px solid var(--bord); border-left: 4px solid var(--c1); border-radius: 10px; padding: 8px 12px; }
.fiche-technique dt { font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; color: var(--pale); }
.fiche-technique dd { margin: 2px 0 0; font-weight: 700; color: var(--encre); }

.achat-livre { background: #fff; border: 2px solid var(--ciel); border-radius: 18px; padding: 20px; max-width: 520px; box-shadow: var(--ombre); }
.tarif-livre { margin: 0 0 12px; }
.tarif-livre b { font-size: 2rem; color: var(--encre); }
.tarif-livre span { color: var(--pale); }
.achat-livre .ajout-cartable { display: block; text-align: center; text-decoration: none; }
.regler-direct { margin-top: 12px; }
.regler-direct summary { cursor: pointer; font-weight: 600; color: var(--c2); }
.regler-direct form { display: grid; gap: 10px; margin-top: 10px; }
.regler-direct .case { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; }
.regler-direct .case input { margin-top: 3px; flex: none; }
.regler-direct .payer { width: 100%; }
.achat-livre .rassurance { margin: 14px 0 0; }

/* --- points forts --- */
.points-forts { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 10px; }
.points-forts li { position: relative; padding: 12px 14px 12px 46px; background: #fff; border-radius: 12px; box-shadow: var(--ombre); }
.points-forts li::before { content: "✓"; position: absolute; left: 14px; top: 11px; width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c1), var(--c2)); color: #fff; font-weight: 800; font-size: .8rem; display: grid; place-items: center; }
.pour-qui { margin: 24px 0 6px; color: var(--encre); }

/* --- programme --- */
.tableau-defilant { overflow-x: auto; }
.programme { width: 100%; border-collapse: collapse; background: #fff; border-radius: 14px; overflow: hidden; box-shadow: var(--ombre); }
.programme thead th { background: linear-gradient(135deg, var(--c1), var(--c2)); color: #fff; text-align: left; padding: 10px 14px; font-size: .9rem; }
.programme tbody th, .programme td { padding: 10px 14px; border-top: 1px solid var(--bord); vertical-align: top; text-align: left; }
.programme tbody th { width: 30%; color: var(--encre); font-weight: 700; }
.programme td { color: var(--doux); font-size: .93rem; }
.programme td.page { white-space: nowrap; color: var(--pale); width: 1%; }
.programme .num { display: inline-grid; place-items: center; min-width: 24px; height: 24px; margin-right: 8px; border-radius: 50%;
  background: var(--ciel); color: var(--c2); font-size: .8rem; }
.programme tr.domaine th { background: var(--neige); color: var(--c2); text-transform: uppercase; letter-spacing: .06em; font-size: .82rem; }

/* --- feuilleter --- */
.feuilleter { display: grid; grid-template-columns: repeat(2, minmax(0, 360px)); gap: 28px; justify-content: center; }
.feuilleter figure { margin: 0; }
.feuilleter img { width: 100%; border-radius: 6px; border: 1px solid var(--bord); box-shadow: var(--ombre); background: #fff; }
.feuilleter figcaption { text-align: center; margin-top: 8px; color: var(--pale); font-weight: 600; }

/* --- mode d'emploi --- */
.mode-emploi { list-style: none; counter-reset: etape; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.mode-emploi li { counter-increment: etape; background: #fff; border: 1px solid var(--bord); border-radius: 16px; padding: 18px; box-shadow: var(--ombre); }
.mode-emploi li::before { content: counter(etape); display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; margin-bottom: 10px;
  background: linear-gradient(135deg, var(--c1), var(--c2)); color: #fff; font-weight: 800; }
.mode-emploi h3 { margin: 0 0 6px; font-size: 1.05rem; color: var(--encre); }
.mode-emploi p { margin: 0; color: var(--doux); font-size: .95rem; }

/* --- pour completer --- */
.completer { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 16px; align-items: stretch; }
.completer > a, .carte-gratuit { background: #fff; border-radius: 16px; padding: 16px; box-shadow: var(--ombre); color: var(--encre); text-decoration: none; }
.completer > a:hover { box-shadow: var(--ombre-forte); }
.completer small { display: block; color: var(--pale); text-transform: uppercase; letter-spacing: .06em; font-size: .75rem; margin-bottom: 4px; }
.completer b { display: block; margin-bottom: 4px; }
.carte-comp { display: flex; gap: 14px; align-items: center; }
.carte-comp img { width: 78px; border-radius: 6px; flex: none; box-shadow: var(--ombre); }
.carte-comp span { color: var(--doux); font-size: .93rem; }
.carte-voisin { border-top: 5px solid var(--c1); }
.carte-gratuit ul { margin: 8px 0 0; padding-left: 18px; font-size: .93rem; }
.carte-gratuit li { margin: 4px 0; }

@media (max-width: 980px) {
  .mode-emploi { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .completer { grid-template-columns: 1fr 1fr; }
  .carte-comp, .carte-gratuit { grid-column: 1 / -1; }
  .collection { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .livre-tete { grid-template-columns: 1fr; gap: 26px; }
  .livre-visuel { max-width: 250px; margin: 0 auto; }
  .feuilleter { grid-template-columns: 1fr; }
  .mode-emploi { grid-template-columns: 1fr; }
  .programme tbody th { width: auto; }
}