/* Shared SignalForge site navigation */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--sf-nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.25rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  min-height: 3.25rem;
  gap: 0.65rem 1rem;
}

.nav-brand {
  color: var(--amber);
  font-weight: 700;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-brand:hover { color: var(--amber-bright); }

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex: 1 1 auto;
  justify-content: center;
}

.nav-group { position: relative; }

.nav-group > summary {
  list-style: none;
  cursor: pointer;
  color: var(--muted);
  padding: 0.55rem 0.7rem;
  border-radius: 2px;
  transition: color 0.15s, background 0.15s;
  user-select: none;
}

.nav-group > summary::-webkit-details-marker { display: none; }

.nav-group > summary::after {
  content: "▾";
  margin-left: 0.35rem;
  font-size: 0.62rem;
  opacity: 0.55;
}

.nav-group[open] > summary,
.nav-group > summary:hover {
  color: var(--text);
  background: var(--sf-nav-summary-hover);
}

.nav-panel {
  position: absolute;
  top: calc(100% + 0.35rem);
  left: 0;
  min-width: 13.5rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  box-shadow: 0 12px 40px var(--sf-shadow-drop);
  padding: 0.35rem 0;
  z-index: 120;
}

.nav-panel a {
  display: block;
  padding: 0.55rem 0.9rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.12s, background 0.12s;
  line-height: 1.35;
}

.nav-panel a:hover,
.nav-panel a.is-active {
  color: var(--amber);
  background: var(--sf-panel-hover);
}

.nav-direct {
  color: var(--muted);
  text-decoration: none;
  padding: 0.55rem 0.7rem;
  transition: color 0.15s;
}

.nav-direct:hover,
.nav-direct.is-active { color: var(--text); }

.nav-hub-cta {
  margin-left: 0.35rem;
  padding: 0.45rem 0.85rem !important;
  border: 1px solid var(--amber-dim);
  color: var(--amber) !important;
  font-weight: 700;
  box-shadow: 0 0 10px 1px var(--sf-hub-glow), 0 0 20px 3px var(--sf-hub-glow-soft);
  animation: hub-cta-pulse 2.8s ease-in-out infinite;
}

.nav-hub-cta:hover {
  border-color: var(--amber);
  background: var(--sf-cta-hover) !important;
  box-shadow: 0 0 16px 3px var(--sf-hub-glow-hover), 0 0 32px 6px var(--sf-hub-glow-soft);
  animation: none;
}

@keyframes hub-cta-pulse {
  0%, 100% {
    box-shadow: 0 0 10px 1px var(--sf-hub-glow), 0 0 20px 3px var(--sf-hub-glow-soft);
  }
  50% {
    box-shadow: 0 0 16px 3px var(--sf-hub-glow-pulse), 0 0 28px 6px var(--sf-hub-glow-soft);
  }
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.45rem 0.75rem;
  cursor: pointer;
}

.nav-mobile {
  display: none;
  border-top: 1px solid var(--border);
  padding: 0.75rem 0 1rem;
  max-width: 1100px;
  margin: 0 auto;
}

.nav-mobile.open { display: block; }

.nav-mobile-section {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}

.nav-mobile-section:last-child { border-bottom: none; }

.nav-mobile-title {
  font-size: 0.62rem;
  color: var(--amber-dim);
  letter-spacing: 0.2em;
  margin-bottom: 0.45rem;
}

.nav-mobile a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  padding: 0.4rem 0;
  font-size: 0.78rem;
}

.nav-mobile a:hover,
.nav-mobile a.is-active { color: var(--amber); }

@media (max-width: 920px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: inline-block; }
  .site-nav-inner .sf-mode-bar { order: 3; width: 100%; }
}

@media (min-width: 921px) {
  .nav-mobile { display: none !important; }
}