/* Site navigation — shared across every page, self-contained.
   var() fallbacks cover pages whose inline :root doesn't define a token. */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(252, 252, 252, 0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  /* layout divider, not elevation — stays a border per the design system */
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-brand {
  font-family: "Nunito Sans", "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--ink, #17171c);
  text-decoration: none;
  /* comfortable hit area without growing the bar */
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 4px 10px 4px 0;
  margin-right: auto;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted, #6e6e78);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition-property: color;
  transition-duration: 150ms;
  transition-timing-function: ease-out;
}
.nav-links a:hover { color: var(--ink, #17171c); }
.nav-links a[aria-current="page"] { color: var(--ink, #17171c); font-weight: 600; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 18px;
  margin-left: 10px;
  background: var(--primary, #17171c);
  color: var(--primary-ink, #ffffff);
  border-radius: 9px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition-property: scale, background-color;
  transition-duration: 150ms;
  transition-timing-function: ease-out;
}
.nav-cta:hover { background: var(--primary-hover, #000000); }
.nav-cta:active { scale: 0.96; }

/* Narrow screens: brand + CTA carry the bar; middle links live in the footer
   too, so nothing becomes unreachable. No hamburger at phase 1. */
@media (max-width: 700px) {
  .nav-links { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .nav-cta:active { scale: 1; }
}