/* Vulgarisation mini-site — identité visuelle propre (HORS thème MkDocs Material).
   Pas de classes md-* ni d'éléments du theme parent ; le sous-site doit pouvoir
   être servi de façon autonome. */

:root {
  --color-bg: #fbfaf6;
  --color-bg-soft: #f3efe5;
  --color-fg: #1f1d18;
  --color-muted: #5b574c;
  --color-accent: #b25527;       /* terre cuite — distinct du theme principal */
  --color-accent-soft: #f1cfb4;
  --color-divider: #d9d3c4;
  --color-ethics-bg: #1f1d18;
  --color-ethics-fg: #fff6ea;
  --color-level1: #2c7a55;
  --color-level2: #2a5d92;
  --color-level3: #6a3f9c;
  --radius: 6px;
  --width-prose: 64ch;
  --width-page: 1180px;
  --font-prose: "Iowan Old Style", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
}

html { background: var(--color-bg); color: var(--color-fg); }
body {
  font-family: var(--font-prose);
  font-size: 1.05rem;
  color: var(--color-fg);
  background: var(--color-bg);
  min-height: 100vh;
}

.skip-link {
  position: absolute; top: -100px; left: 0;
  background: var(--color-ethics-bg); color: var(--color-ethics-fg);
  padding: 0.5rem 1rem; z-index: 1000;
}
.skip-link:focus { top: 0; }

/* Sticky ethics banner (toujours visible). */
.ethics-sticky {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-ethics-bg); color: var(--color-ethics-fg);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid #000;
}
.ethics-sticky strong { color: #ffd098; }

/* Header. */
.site-header {
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0.75rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  border-bottom: 1px dashed var(--color-divider);
}
.brand a {
  font-family: var(--font-ui);
  font-weight: 700;
  text-decoration: none;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}
.audience-switcher {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  justify-content: center;
  font-family: var(--font-ui);
}
.audience-pill {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-divider);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--color-fg);
}
.audience-pill--active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.main-site-link {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--color-muted);
}
.main-site-link:hover { color: var(--color-accent); }

/* Layout — deux colonnes (sub-nav + corps). */
.layout {
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 2.5rem;
}
@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sub-nav { order: 2; }
}

.sub-nav {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  border-right: 1px solid var(--color-divider);
  padding-right: 1rem;
}
.sub-nav-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin: 0 0 0.5rem;
}
.sub-nav ul { list-style: none; padding: 0; margin: 0 0 1.25rem; }
.sub-nav li { margin: 0.25rem 0; }
.sub-nav a { text-decoration: none; color: var(--color-fg); }
.sub-nav a:hover { color: var(--color-accent); }

/* Body. */
.page-body { max-width: var(--width-prose); }
.audience-line {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.5rem;
}
.page-body h1 { font-size: 2.1rem; margin: 0.25rem 0 1.25rem; line-height: 1.2; }
.page-body h2 { font-size: 1.45rem; margin: 2rem 0 0.5rem; }
.page-body h3 { font-size: 1.15rem; margin: 1.5rem 0 0.4rem; }
.page-body p, .page-body li { font-size: 1.05rem; }
.page-body blockquote {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  background: var(--color-bg-soft);
  border-left: 4px solid var(--color-accent);
  font-style: italic;
}
.page-body table { width: 100%; margin: 1rem 0; }
.page-body th, .page-body td {
  border: 1px solid var(--color-divider);
  padding: 0.4rem 0.6rem;
  text-align: left;
  font-family: var(--font-ui);
  font-size: 0.92rem;
}
.page-body th { background: var(--color-bg-soft); }

.page-body .callout {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
}
.page-body .callout--warning { border-left: 6px solid var(--color-accent); }
.page-body .callout--how { border-left: 6px solid var(--color-level2); }
.page-body .callout--limit { border-left: 6px solid #b22d2d; }
.page-body .callout h3 { margin-top: 0; }

/* Hub-spécifique : 3 portes. */
.portes {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 1.5rem 0;
}
.porte {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  background: #fff;
  text-decoration: none;
  color: var(--color-fg);
  box-shadow: 0 1px 0 var(--color-divider);
}
.porte:hover { transform: translateY(-2px); transition: transform 0.15s; }
.porte--niveau-1 { border-top: 4px solid var(--color-level1); }
.porte--niveau-2 { border-top: 4px solid var(--color-level2); }
.porte--niveau-3 { border-top: 4px solid var(--color-level3); }
.porte--maths { border-top: 4px solid var(--color-accent); }
.porte h2 { font-size: 1.1rem; margin: 0 0 0.5rem; }
.porte p { font-size: 0.95rem; margin: 0; color: var(--color-muted); }

/* Footer. */
.site-footer {
  max-width: var(--width-page);
  margin: 2rem auto 0;
  padding: 1.5rem 1.25rem 2.5rem;
  border-top: 1px dashed var(--color-divider);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--color-muted);
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 0.75rem; }
.site-footer nav a { color: var(--color-fg); text-decoration: none; }
.site-footer nav a:hover { color: var(--color-accent); }
.footer-note { margin: 0; line-height: 1.4; }