/* When a page's existing <header class="site"> hosts the new nav, neutralise
   its old padding/border so .site-nav's own chrome doesn't double up. */
header.site:has(.site-nav),
header.site:has([data-site-nav]) {
  padding: 0 !important;
  border: 0 !important;
  display: block !important;
  background: transparent !important;
}

/* ════════════════════════════════════════════════════════════════════
   Running ticker — sits above every site nav. Injected by site-nav.js.
   ════════════════════════════════════════════════════════════════════ */
.site-ticker {
  position: relative;
  z-index: 10;
  overflow: hidden;
  background: var(--blue, #1A1FCC);
  height: 32px;
  display: flex;
  align-items: center;
}
.site-ticker-track {
  display: flex;
  white-space: nowrap;
  animation: site-ticker-scroll 32s linear infinite;
}
.site-ticker-track span {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #fff;
  padding-right: 3rem;
}
@keyframes site-ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .site-ticker-track { animation: none; }
}

/* ════════════════════════════════════════════════════════════════════
   Site nav — Option C "utility clear" with sharp-corner brand CTA.
   Shared across /index, /map, /giving-back, /partner-with-us.

   Tokens this file expects on :root (each page already defines them):
     --blue, --blue-hover, --light-blue, --on-surface, --on-variant,
     --outline, --surface-recessed (or --md-surface-container-low).
   We provide safe fallbacks so the nav still renders if a token is
   missing on a host page.
   ════════════════════════════════════════════════════════════════════ */

.site-nav {
  --nav-blue:         var(--blue, #1A1FCC);
  --nav-blue-hover:   var(--blue-hover, #1D24E8);
  --nav-light-blue:   var(--light-blue, #8AAED4);
  --nav-on-surface:   var(--on-surface, #E5E1F1);
  --nav-on-variant:   var(--on-variant, #C4C3D2);
  --nav-outline:      var(--outline, #44434E);
  --nav-recessed:     var(--surface-recessed, #05060B);

  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 2.5rem;
  border-bottom: 1px solid var(--nav-outline);
  font-family: system-ui, -apple-system, sans-serif;
}

.site-nav-logo img { height: 48px; width: auto; display: block; }

.site-nav-center {
  display: flex; align-items: center; justify-content: center;
  gap: 1.5rem;
}
.site-nav-link {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--nav-on-variant);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.site-nav-link:hover,
.site-nav-link:focus-visible {
  color: #fff;
  border-bottom-color: var(--nav-light-blue);
}
.site-nav-link.is-active {
  color: #fff;
  border-bottom-color: var(--nav-light-blue);
}

.site-nav-right {
  display: flex; align-items: center;
  gap: 4px;
}
.site-nav-cta {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: var(--nav-blue);
  text-decoration: none;
  padding: 11px 20px;
  border: 1px solid var(--nav-blue);
  transition: background 0.18s ease, border-color 0.18s ease;
}
.site-nav-cta:hover,
.site-nav-cta:focus-visible {
  background: var(--nav-blue-hover);
  border-color: var(--nav-blue-hover);
}

.site-nav-burger {
  display: none;
  position: relative;
  width: 40px; height: 40px;
  background: none;
  border: 1px solid var(--nav-outline);
  color: var(--nav-on-surface);
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.site-nav-burger:hover,
.site-nav-burger:focus-visible {
  border-color: var(--nav-light-blue);
  color: var(--nav-light-blue);
}
.site-nav-burger::before,
.site-nav-burger::after,
.site-nav-burger .bar {
  content: '';
  position: absolute;
  left: 10px; right: 10px;
  height: 2px;
  background: currentColor;
  transition: transform 0.22s ease, opacity 0.18s ease, top 0.22s ease;
}
.site-nav-burger::before { top: 13px; }
.site-nav-burger .bar    { top: 19px; }
.site-nav-burger::after  { top: 25px; }
.site-nav-burger.is-open::before { top: 19px; transform: rotate(45deg); }
.site-nav-burger.is-open::after  { top: 19px; transform: rotate(-45deg); }
.site-nav-burger.is-open .bar    { opacity: 0; }

/* Mobile collapse */
@media (max-width: 880px) {
  .site-nav {
    grid-template-columns: auto 1fr auto;
    column-gap: 0.75rem;
    padding: 1rem 1.25rem;
  }
  .site-nav-center { display: none; }
  .site-nav-right { grid-column: 3; }
  .site-nav-burger { display: block; }
  .site-nav-cta { padding: 10px 14px; font-size: 0.82rem; }
  .site-nav-logo img { height: 40px; }
}

/* Mobile menu overlay — slides down below the bar when burger is open.
   Hidden by default at every viewport. Only the mobile media query can
   show it (.is-open class added by site-nav.js). Without that scoping,
   rotating from mobile → desktop with the menu open leaves it stuck
   stacked across the layout.                                            */
.site-nav-overlay {
  display: none;
  padding: 1.5rem 1.25rem 2rem;
  flex-direction: column;
  gap: 1rem;
  background: var(--nav-recessed);
  border-bottom: 1px solid var(--nav-outline);
}
.site-nav-overlay a {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--nav-on-surface);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--nav-outline);
}
.site-nav-overlay a.is-cta {
  color: #fff;
  background: var(--nav-blue);
  border: 1px solid var(--nav-blue);
  padding: 14px 18px;
  margin-top: 0.5rem;
  text-align: center;
}
.site-nav-overlay a.is-cta:hover { background: var(--nav-blue-hover); }

@media (max-width: 880px) {
  .site-nav-overlay.is-open { display: flex; }
}

/* Progressive enhancement: when JS hasn't run yet (or fails), html.no-js
   keeps the overlay open on mobile so users still have access to the
   center links. site-nav.js removes .no-js on init so the JS-controlled
   toggle takes over.                                                    */
html.no-js .site-nav-burger { display: none; }
@media (max-width: 880px) {
  html.no-js .site-nav-overlay { display: flex; }
}