/* shared.css — Site-wide navigation bar and footer CTA styles
   Included by all pages via <link rel="stylesheet" href="shared.css">   */

:root {
  --sn-height: 52px;
}

/* ─── Visually hidden utility (in case a page doesn't define it inline) ─── */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Account for sticky nav when jumping to anchor targets ─── */
#main-content,
#map,
:target {
  scroll-margin-top: calc(var(--sn-height) + 8px);
}

/* ─── Site Navigation Bar ─── */
.site-nav {
  background: #0d1f3c;
  border-bottom: 2px solid #009EDB;
  position: sticky;
  top: 0;
  z-index: 1000;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

.site-nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: var(--sn-height);
  position: relative;
}

.site-nav-brand {
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  flex-shrink: 0;
  letter-spacing: -0.01em;
}
.site-nav-brand:hover,
.site-nav-brand:focus-visible {
  color: #93c5fd;
}

.site-nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-wrap: wrap;
}

.site-nav-links a {
  display: inline-flex;
  align-items: center;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  border-radius: 0.4rem;
  white-space: nowrap;
}
.site-nav-links a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.site-nav-links a[aria-current="page"] {
  background: rgba(0, 158, 219, 0.25);
  color: #fff;
}
.site-nav-links a:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 2px;
}

/* Submit Event CTA button in nav */
.site-nav-submit {
  background: #f59e0b !important;
  color: #0d1f3c !important;
  border-radius: 0.4rem;
  margin-left: 0.25rem;
}
.site-nav-submit:hover {
  background: #d97706 !important;
  color: #0d1f3c !important;
}

/* ─── Mobile hamburger toggle ─── */
.site-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  padding: 0.4rem 0.5rem;
  margin-left: auto;
  border-radius: 0.35rem;
}
.site-nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}
.site-nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}
.site-nav-toggle:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 2px;
}

@media (max-width: 680px) {
  .site-nav-toggle {
    display: flex;
  }
  .site-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #0d1f3c;
    border-bottom: 2px solid #009EDB;
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem 0.75rem;
    gap: 0.2rem;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  }
  .site-nav-links.open {
    display: flex;
  }
  .site-nav-links a {
    padding: 0.6rem 0.75rem;
  }
  .site-nav-submit {
    margin-left: 0;
  }
}

/* ─── Footer contribution CTA (injected by nav.js) ─── */
.footer-cta {
  margin-top: 0.6rem;
  font-size: 0.85rem;
}
.footer-cta a {
  color: #2563eb;
  font-weight: 600;
}