/* DiagHub - styles section Apprendre (articles).
   Charge APRES style.css : reutilise les tokens (--bg-light, --accent, fonts...). */

:root {
  --ink-link: #0E7490;        /* teal lisible sur fond clair, contraste >= 4.5:1 */
  --ink-link-hover: #0B5563;
  --prose-bg: #FFFFFF;
}

/* --- Layout article --- */
.art-wrap {
  background: var(--bg-light);
  padding-top: 96px;          /* nav fixe ~64px + air */
  min-height: 100vh;
}

.art {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* --- Fil d'ariane --- */
.art-crumb {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 28px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.art-crumb a { color: var(--text-muted); text-decoration: none; }
.art-crumb a:hover { color: var(--ink-link); }
.art-crumb .sep { opacity: 0.5; }
.art-crumb .here { color: var(--text-dark); }

/* --- En-tete article --- */
.art-kicker {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-hover);
  margin-bottom: 14px;
}
.art h1 {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.15;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.art-meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  padding-bottom: 28px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.art-meta .sep { opacity: 0.5; }

/* --- Illustration hero --- */
.art-hero { margin: 8px 0 4px; }
.art-hero-panel {
  background: var(--bg-dark);
  border: 1px solid rgba(34,211,238,0.22);
  border-radius: 16px;
  padding: 18px 24px;
  overflow: hidden;
}
.art-hero-panel svg { display: block; width: 100%; height: auto; max-height: 260px; }

/* --- Glossaire "en clair" --- */
.art-gloss {
  background: #F1EFE8;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-hover);
  border-radius: 12px;
  padding: 20px 24px;
}
.art-gloss-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-hover);
  margin-bottom: 12px;
}
.art-gloss ul { margin: 0; padding-left: 18px; }
.art-gloss li { margin: 9px 0; font-size: 16px; line-height: 1.55; color: #3B5143; }
.art-gloss li strong { color: var(--text-dark); }
.art-gloss .tech { font-family: var(--mono); font-size: 13px; color: var(--ink-link); }

/* --- Sommaire --- */
.art-toc {
  background: var(--prose-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 26px;
  margin: 32px 0;
}
.art-toc-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.art-toc ol { margin: 0; padding-left: 20px; }
.art-toc li { margin: 7px 0; }
.art-toc a { color: var(--ink-link); text-decoration: none; }
.art-toc a:hover { text-decoration: underline; }

/* --- Corps de texte --- */
.art-body { font-size: 18px; line-height: 1.72; color: #243029; }
.art-body > * + * { margin-top: 20px; }
.art-body h2 {
  font-size: 26px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-dark);
  margin-top: 52px;
  scroll-margin-top: 96px;
}
.art-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dark);
  margin-top: 32px;
}
.art-body p { color: #243029; }
.art-body a { color: var(--ink-link); text-decoration: underline; text-underline-offset: 2px; }
.art-body a:hover { color: var(--ink-link-hover); }
.art-body strong { color: var(--text-dark); font-weight: 600; }
.art-body ul, .art-body ol { padding-left: 26px; }
.art-body li { margin: 10px 0; }
.art-body li::marker { color: var(--accent-hover); }
.art-body code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: #ECEAE3;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 6px;
  color: #1A2A22;
}

/* --- Encadre note/conseil --- */
.art-callout {
  border: 1px solid rgba(34,211,238,0.4);
  border-left: 3px solid var(--accent-hover);
  background: rgba(34,211,238,0.06);
  border-radius: 12px;
  padding: 18px 22px;
  font-size: 16px;
}
.art-callout .lbl {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-hover);
  display: block;
  margin-bottom: 6px;
}

/* --- Bloc CTA conversion --- */
.art-cta {
  margin: 56px 0 0;
  background: var(--bg-dark);
  border: 1px solid rgba(34,211,238,0.22);
  border-radius: 18px;
  padding: 36px 34px;
  text-align: center;
}
.art-cta h2 { color: #F9FAFB; font-size: 24px; margin: 0 0 10px; border: none; }
.art-cta p { color: #9CA3AF; font-size: 16px; margin: 0 auto 22px; max-width: 460px; }
.art-cta .btn-dl {
  display: inline-block;
  background: var(--accent);
  color: #03252B;
  font-weight: 700;
  font-size: 16px;
  padding: 15px 34px;
  border-radius: 12px;
  text-decoration: none;
  transition: background 160ms ease, transform 160ms ease;
}
.art-cta .btn-dl:hover { background: var(--accent-hover); transform: translateY(-1px); }
.art-cta .btn-dl:active { transform: scale(0.97); }
.art-cta .sub { font-family: var(--mono); font-size: 12px; color: #6B7280; margin-top: 14px; }

/* --- FAQ article (reprend l'esprit de la FAQ home, sur fond clair) --- */
.art-faq { margin-top: 56px; }
.art-faq h2 { font-size: 26px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.art-faq details {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}
.art-faq summary {
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-dark);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.art-faq summary::-webkit-details-marker { display: none; }
.art-faq summary::after { content: "+"; color: var(--accent-hover); font-weight: 400; font-size: 22px; line-height: 1; }
.art-faq details[open] summary::after { content: "\2013"; }
.art-faq .a { margin-top: 12px; font-size: 16px; line-height: 1.65; color: #3B5143; }

/* --- Articles lies --- */
.art-related { margin-top: 56px; }
.art-related-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.art-related-grid { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
.art-related-card {
  display: block;
  background: var(--prose-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}
.art-related-card:hover { border-color: var(--accent-hover); transform: translateY(-2px); }
.art-related-card .t { font-weight: 600; color: var(--text-dark); font-size: 16px; line-height: 1.35; }
.art-related-card .d { color: var(--text-muted); font-size: 14px; margin-top: 6px; }

/* --- Hub /apprendre/ --- */
.hub-head { max-width: 760px; margin: 0 auto; padding: 0 24px; text-align: center; }
.hub-head h1 { font-size: clamp(30px, 6vw, 46px); font-weight: 700; color: var(--text-dark); margin-bottom: 14px; }
.hub-head p { font-size: 18px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }
.hub-grid {
  max-width: 920px;
  margin: 44px auto 0;
  padding: 0 24px;
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr 1fr;
}
.hub-card {
  display: flex;
  flex-direction: column;
  background: var(--prose-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 28px;
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}
.hub-card:hover { border-color: var(--accent-hover); transform: translateY(-2px); }
.hub-card-art {
  background: var(--bg-dark);
  border-radius: 12px;
  padding: 8px 12px;
  margin-bottom: 18px;
  overflow: hidden;
}
.hub-card-art svg { display: block; width: 100%; height: auto; max-height: 130px; }
.hub-card .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-hover);
  margin-bottom: 12px;
}
.hub-card .t { font-size: 20px; font-weight: 700; color: var(--text-dark); line-height: 1.3; }
.hub-card .d { font-size: 15px; color: var(--text-muted); margin-top: 10px; line-height: 1.55; flex: 1; }
.hub-card .more { font-family: var(--mono); font-size: 13px; color: var(--ink-link); margin-top: 18px; }

@media (max-width: 640px) {
  .art-related-grid, .hub-grid { grid-template-columns: 1fr; }
  .art-body { font-size: 17px; }
}