/* ── Navbar (ported from components/ui/Navbar.tsx) ───────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}

.site-header.scrolled {
  backdrop-filter: blur(18px);
}

html:not([data-theme="dark"]) .site-header.scrolled {
  background: rgba(247,246,243,0.95);
  border-bottom-color: rgba(28,25,23,0.09);
}

html[data-theme="dark"] .site-header.scrolled {
  background: rgba(12,14,20,0.95);
  border-bottom-color: rgba(255,255,255,0.07);
}

.site-header .nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.9rem clamp(1rem, 4vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header .logo {
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.site-header .desktop-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}
@media (min-width: 768px) {
  .site-header .desktop-nav { display: flex; }
}

.site-header .desktop-nav a {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--text-2);
  text-decoration: none;
  transition: color 0.25s;
}
.site-header .desktop-nav a:hover { color: var(--accent); }

.nav-controls { display: flex; align-items: center; gap: 0.75rem; }

.icon-btn {
  background: var(--accent-dim);
  border: 1px solid var(--border);
  color: var(--accent);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 4px;
  font-size: 0.9rem;
  transition: background 0.25s, border-color 0.25s, color 0.25s;
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--accent); color: #fff; }
.icon-btn.active { background: var(--accent); color: #fff; }

.admin-link {
  display: none;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-3);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 0.4rem 0.9rem;
  border-radius: 4px;
  transition: all 0.25s;
}
@media (min-width: 768px) { .admin-link { display: flex; } }
.admin-link:hover { color: var(--accent); border-color: var(--border-2); }

.mobile-toggle {
  display: flex;
  background: none;
  border: none;
  color: var(--accent);
  font-size: 1.2rem;
  cursor: pointer;
}
@media (min-width: 768px) { .mobile-toggle { display: none; } }

.mobile-menu {
  display: none;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1rem clamp(1rem, 4vw, 2rem);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-2);
  text-decoration: none;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}