/**
 * Ecosystem apex strip — greatsage.org (+ tier-2/3 variants)
 * Meet Janet URL: keep in sync with Janet-Projects/what-can-janet-do/config.json → meetJanetUrl
 * (placeholder: https://heyjanet.org/janet/ until subdomain/path is final).
 */
.gs-apex-nav {
  font-size: 0.8125rem;
  font-weight: 600;
  border-bottom: 1px solid var(--nav-border);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.gs-apex-nav-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1rem;
  padding: 0.45rem 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.gs-apex-brand {
  color: var(--apex-sage-gold, #d4a857);
  margin-right: 0.25rem;
}

.gs-apex-nav a {
  color: var(--text-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.gs-apex-nav a:hover {
  color: var(--primary);
  border-bottom-color: color-mix(in srgb, var(--apex-sage-purple, #7c3aed) 55%, var(--apex-janet-cyan, #5eead4) 45%);
}

[data-theme="dark"] .gs-apex-nav a:hover {
  border-bottom-color: color-mix(in srgb, var(--apex-sage-blue-dark, #0a84ff) 60%, var(--apex-janet-cyan, #5eead4) 40%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .gs-apex-nav a:hover {
    border-bottom-color: color-mix(in srgb, var(--apex-sage-blue-dark, #0a84ff) 60%, var(--apex-janet-cyan, #5eead4) 40%);
  }
}

.gs-apex-nav a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.gs-apex-nav a.gs-apex-here {
  color: var(--primary);
  border-bottom-color: color-mix(in srgb, var(--apex-sage-purple, #7c3aed) 50%, var(--apex-janet-cyan, #5eead4) 50%);
}

[data-theme="dark"] .gs-apex-nav a.gs-apex-here {
  border-bottom-color: color-mix(in srgb, var(--apex-sage-blue-dark, #0a84ff) 55%, var(--apex-janet-cyan, #5eead4) 45%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .gs-apex-nav a.gs-apex-here {
    border-bottom-color: color-mix(in srgb, var(--apex-sage-blue-dark, #0a84ff) 55%, var(--apex-janet-cyan, #5eead4) 45%);
  }
}

.gs-apex-nav--slim .gs-apex-nav-inner {
  padding: 0.35rem 24px;
  font-size: 0.78rem;
}

.gs-apex-nav--minimal .gs-apex-nav-inner {
  justify-content: center;
  padding: 0.4rem 16px;
  font-size: 0.75rem;
}

.gs-apex-w-strip {
  text-align: center;
  padding: 0.4rem 16px;
  font-size: 0.8rem;
  color: var(--text-light);
  border-bottom: 1px solid var(--border-card);
  background: var(--bg-card);
}

.gs-apex-w-strip strong {
  color: var(--primary);
}

.header-stack {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
}

.header-stack .navbar {
  position: relative;
  top: auto;
}