/* =====================================================================
   Pages /demo et /documentation — complément du design system (styles.css)
   Réutilise les tokens (--orange, --cyan, --clip-oct…) ; aucune couleur neuve.
   ===================================================================== */

.page-hero { padding-top: calc(var(--nav-h) + clamp(2.5rem, 5vw, 4rem)); padding-bottom: clamp(2rem, 4vw, 3rem); }
.page-hero .section-head { max-width: 920px; margin-bottom: clamp(2rem, 4vw, 2.75rem); }
.page-hero h1 { margin-bottom: 1.25rem; text-wrap: balance; }

/* Mode d'emploi en 3 étapes (démo) */
.howto { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; counter-reset: none; }
.howto__item {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1.25rem 1.25rem; background: var(--surface);
  clip-path: var(--clip-oct-sm); box-shadow: inset 0 0 0 1px var(--border);
}
.howto__n { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; line-height: 1; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.howto__item strong { display: block; font-family: var(--font-head); font-size: 1.12rem; font-weight: 700; margin-bottom: .25rem; }
.howto__item span:not(.howto__n) { color: var(--text-muted); font-size: .94rem; }

/* Cartes de démo (variante de .case) */
.demo-card__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -0.01em; margin: .5rem 0 .9rem; }
.demo-card p { color: var(--text-muted); margin-bottom: 1.25rem; max-width: 52ch; }
.demo-card__feats { display: grid; gap: .5rem; margin-bottom: 1.75rem; }
.demo-card__feats li { position: relative; padding-left: 1.5rem; color: #D7DBE2; font-size: .98rem; }
.demo-card__feats li::before { content: ""; position: absolute; left: 0; top: .62em; width: 10px; height: 2px; background: var(--grad); }
.demo-card__cta { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; align-items: center; }
.demo-card__media { aspect-ratio: 16 / 10; transition: transform .35s var(--ease), box-shadow .35s var(--ease); }
.demo-card__media img { object-position: top left; }
.demo-card__media:hover { transform: translateY(-4px); box-shadow: inset 0 0 0 1px var(--cyan), var(--shadow-lg); }
.demo-note { margin-top: 1.5rem; color: var(--text-dim); font-size: .9rem; text-align: center; }

/* ---------- Documentation ---------- */
.doc-filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.doc-group + .doc-group { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.doc-group__head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; padding-bottom: .75rem; border-bottom: 1px solid var(--border); }
.doc-group__head h2 { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.4rem, 2.4vw, 1.8rem); letter-spacing: 0; }
.doc-group__head a { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .08em; color: var(--cyan); }
.doc-group [id] { scroll-margin-top: calc(var(--nav-h) + 1.5rem); }
.docs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.doc {
  display: grid; grid-template-columns: 112px 1fr; gap: 1.25rem; align-items: start;
  padding: 1.5rem; background: var(--surface); clip-path: var(--clip-oct); box-shadow: inset 0 0 0 1px var(--border);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}
.doc:hover { background: var(--surface-2); box-shadow: inset 0 0 0 1px rgba(0, 229, 255, .45); }
.doc__cover { aspect-ratio: 1 / 1.414; clip-path: var(--clip-oct-sm); overflow: hidden; background: var(--bg-3); box-shadow: inset 0 0 0 1px var(--border); }
.doc__cover img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.doc__kind { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; color: var(--orange); }
.doc h3 { font-family: var(--font-head); font-weight: 700; font-size: 1.3rem; letter-spacing: 0; line-height: 1.2; margin: .35rem 0 .5rem; }
.doc p { color: var(--text-muted); font-size: .94rem; }
.doc__meta { display: flex; flex-wrap: wrap; gap: .4rem; margin: .9rem 0 1.1rem; }
.doc__actions { display: flex; flex-wrap: wrap; gap: .6rem 1.2rem; align-items: center; }
.doc__actions .btn { --pad: .7rem 1.15rem; font-size: .95rem; }
.doc__note { margin-top: .75rem; font-size: .82rem; color: var(--text-dim); }
.docs-empty { padding: 2rem; text-align: center; color: var(--text-muted); background: var(--surface); clip-path: var(--clip-oct); box-shadow: inset 0 0 0 1px var(--border); }

/* Responsive */
@media (max-width: 980px) {
  .howto { grid-template-columns: 1fr; }
  .docs { grid-template-columns: 1fr; }
  .demo-card__media { max-width: none; }
}
@media (max-width: 460px) {
  .doc { grid-template-columns: 1fr; }
  .doc__cover { max-width: 140px; }
  .demo-card__cta .btn { width: 100%; justify-content: center; }
}