/* tokens/site-header.css — canonical Vyzora horizontal nav.
 *
 * Pulled out of per-page inline blocks so the same partial renders
 * at the same vertical position on every page. Works in both
 * Editorial Authority (light parchment) and Operational Dark surfaces.
 *
 * Surface routing: rules under `[data-surface-mode="operational-dark"]`
 * map the original editorial-token names (--ink-2, --signal-amber,
 * --rule, --surface, --border-hair) onto the locked operational-dark
 * tokens (--text-secondary, --brass-400, --border-hairline, --bg-primary).
 *
 * ADR-008 compliant: no glassmorphism, no decorative gradients,
 * no indigo/cobalt accents.
 */

.site-header {
  position: sticky; top: 0; z-index: 40;
  background: var(--bg-primary, var(--surface, #fff));
  border-bottom: 1px solid var(--border-hairline, var(--rule, rgba(0,0,0,0.08)));
}
.site-header__row {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.site-header__brand {
  font-family: var(--font-display);
  font-size: var(--type-14, 14px); font-weight: 600;
  letter-spacing: -0.005em; text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
}
.site-header__brand::before {
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--signal-amber, var(--brass-400, #c8a55a));
  border-radius: 50%;
  margin-right: 8px; vertical-align: middle;
}
.site-header__nav { display: none; align-items: center; gap: 24px; }
@media (min-width: 768px) { .site-header__nav { display: flex; } }
.site-header__link {
  font-family: var(--font-display);
  font-size: var(--type-12, 12px);
  letter-spacing: 0.04em; text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-2, var(--text-secondary, #999));
}
.site-header__link:hover,
.site-header__link.is-active {
  color: var(--text-primary);
  font-weight: 500;
}
.site-header__cta {
  display: none;
  font-family: var(--font-display);
  font-size: var(--type-12, 12px); font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--signal-amber, var(--brass-400, #c8a55a));
  color: var(--signal-amber, var(--brass-400, #c8a55a));
  text-decoration: none;
  border-radius: var(--radius-1, 2px);
  background: transparent;
}
.site-header__cta:hover {
  background: var(--signal-amber, var(--brass-400, #c8a55a));
  color: var(--surface, var(--bg-primary));
}
@media (min-width: 768px) { .site-header__cta { display: inline-block; } }