/* Osprey site styles, layered on top of the techdoc structural theme.
 * The theme ships colour-free structural CSS (/techdoc/css/*) and links THIS
 * file after it. We keep the existing Osprey design (imported below) and add
 * the colour variables + chrome styling the theme's markup expects.
 * Richer visual designs will be merged in later — keep this minimal. */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap");
@import url("/css/variables.css");
@import url("/css/base.css");
@import url("/css/components.css");
@import url("/css/syntax.css");

/* Colour contract referenced by the theme's structural CSS. */
:root {
  --color-bg: #ffffff;
  --color-text: #0f172a;
  --color-primary: #0369a1;
  --color-border: #e2e8f0;
  --color-muted: #475569;
  --max-width: 1200px;
}
[data-theme="dark"] {
  --color-bg: #0b1220;
  --color-text: #e2e8f0;
  --color-primary: #38bdf8;
  --color-border: #1e293b;
  --color-muted: #94a3b8;
}

/* ---- Theme chrome: header / nav / footer ---- */
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; background: #fff; padding: .5rem 1rem; z-index: 1000; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header .nav {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; align-items: center; gap: 1.5rem;
  padding: .75rem 1.5rem;
}
.site-header .logo { font-weight: 800; font-size: 1.25rem; color: var(--color-text); text-decoration: none; }
.site-header .nav-links { list-style: none; display: flex; gap: 1.25rem; margin: 0; padding: 0; flex: 1; }
.site-header .nav-link { color: var(--color-muted); text-decoration: none; font-weight: 500; }
.site-header .nav-link:hover, .site-header .nav-link.active { color: var(--color-primary); }
.nav-actions { display: flex; align-items: center; gap: .75rem; }
.theme-toggle, .mobile-menu-toggle {
  background: none; border: 1px solid var(--color-border); border-radius: 6px;
  cursor: pointer; padding: .35rem .5rem; color: var(--color-text);
}
.theme-toggle .theme-icon-dark { display: none; }
[data-theme="dark"] .theme-toggle .theme-icon-light { display: none; }
[data-theme="dark"] .theme-toggle .theme-icon-dark { display: inline; }
.mobile-menu-toggle { display: none; flex-direction: column; gap: 4px; }
.mobile-menu-toggle span { width: 20px; height: 2px; background: var(--color-text); display: block; }

.site-footer { border-top: 1px solid var(--color-border); background: var(--color-bg); margin-top: 4rem; }
.site-footer .footer-content { max-width: var(--max-width); margin: 0 auto; padding: 2.5rem 1.5rem; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 2rem; }
.footer-section h3 { font-size: .95rem; margin-bottom: .75rem; }
.footer-section ul { list-style: none; margin: 0; padding: 0; }
.footer-section li { margin: .35rem 0; }
.footer-section a { color: var(--color-muted); text-decoration: none; }
.footer-section a:hover { color: var(--color-primary); }
.footer-bottom { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--color-border); color: var(--color-muted); }

@media (max-width: 768px) {
  .site-header .nav-links { display: none; }
  .mobile-menu-toggle { display: flex; }
}