/* site-nav.css — shared top navigation across icesus.org properties.
 *
 * Loaded on: icesus.org landing, /maps/, /legends/, /wiki, /forum.
 * Uses CSS grid (1fr auto 1fr) so the link row is truly centered on the
 * page whether or not the Play CTA is present. High-specificity selectors
 * + !important on critical properties so wiki (Vector) and forum (prosilver)
 * global styles can't leak in.
 */

nav.site-nav,
nav.site-nav * {
  box-sizing: border-box;
}

nav.site-nav {
  display: grid !important;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0.7rem 1.25rem;
  background: linear-gradient(180deg, #060b14 0%, #0a1424 100%) !important;
  border-bottom: 1px solid #1a3a5c;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.4;
  color: #c8d6e5;
  width: 100%;
  margin: 0;
  position: relative;
  z-index: 100;
}

/* Links row sits in the centre column (grid-column 2) so an empty 1fr on
 * each side keeps it visually centred on the page regardless of the CTA. */
nav.site-nav .site-nav-links {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  min-width: 0;
}

nav.site-nav .site-nav-links a {
  color: #5dade2 !important;
  text-decoration: none !important;
  padding: 0.35rem 0.9rem;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.75;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
  border-radius: 4px;
  background: transparent;
  border: none;
  display: inline-block;
}

nav.site-nav .site-nav-links a:hover,
nav.site-nav .site-nav-links a:focus-visible {
  opacity: 1;
  background: rgba(93,173,226,0.08);
  color: #85c8ee !important;
  outline: none;
}

nav.site-nav .site-nav-links a.active,
nav.site-nav .site-nav-links a[aria-current="page"] {
  opacity: 1;
  color: #e2e8f0 !important;
}

nav.site-nav .site-nav-cta {
  grid-column: 3;
  justify-self: end;
  display: inline-block;
  background: linear-gradient(135deg, #1a8fe0, #0d6ebd) !important;
  color: #ffffff !important;
  padding: 0.55rem 1.5rem;
  border-radius: 6px;
  text-decoration: none !important;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 2px 12px rgba(26,143,224,0.35);
  transition: transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  border: none;
}
nav.site-nav .site-nav-cta:hover,
nav.site-nav .site-nav-cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(26,143,224,0.55);
  color: #ffffff !important;
  outline: none;
}

/* No-CTA variant (landing page): single centred column so links fill
 * the whole bar and are centred across the full width. */
nav.site-nav.no-cta {
  grid-template-columns: 1fr;
}
nav.site-nav.no-cta .site-nav-links {
  grid-column: 1;
}

/* Zero any host-page body padding-top when the nav is the first body child,
 * so the nav sits flush with the top of the viewport on phpBB (body has
 * 12px vertical padding) and any similar platforms. */
body:has(> nav.site-nav:first-child) {
  padding-top: 0 !important;
}

@media (max-width: 700px) {
  nav.site-nav {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem 0.6rem;
  }
  nav.site-nav .site-nav-links {
    grid-column: 1;
    grid-row: 1;
  }
  nav.site-nav .site-nav-cta {
    grid-column: 1;
    grid-row: 2;
    justify-self: center;
  }
  nav.site-nav .site-nav-links a {
    padding: 0.2rem 0.55rem;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
  }
  nav.site-nav .site-nav-cta {
    padding: 0.45rem 1.2rem;
    font-size: 0.78rem;
  }
}