.site-header {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--transition-fast);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--gold-dim);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ivory);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}

.logo span {
  color: var(--gold);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav > a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ivory-dim);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-nav > a:hover,
.site-nav > a.active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* Dropdown Menu */
.nav-dropdown {
  position: relative;
}

.dropdown-trigger {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ivory-dim);
  background: none;
  border: none;
  padding: 8px 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-fast);
}

.dropdown-trigger::after {
  content: "▼";
  font-size: 8px;
  transition: transform var(--transition-fast);
}

.nav-dropdown.open .dropdown-trigger::after {
  transform: rotate(180deg);
}

.dropdown-trigger:hover,
.nav-dropdown.open .dropdown-trigger {
  color: var(--gold);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 8px 0;
  min-width: 180px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav-dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ivory-dim);
  padding: 10px 20px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown-menu a:hover {
  background: var(--panel-light);
  color: var(--gold);
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--hairline);
  color: var(--ivory);
  font-size: 20px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--gold);
  color: var(--gold);
}