.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--border);
  background: var(--bg-current);
}

.site-nav__brand {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-nav__link {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--t-fast);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--text-primary);
}

.site-nav__dropdown-arrow {
  display: inline-block;
  transition: transform var(--t-fast);
}

.site-nav__dropdown.is-open .site-nav__dropdown-arrow {
  transform: scaleY(-1);
}

/* Dropdown */
.site-nav__dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.site-nav__dropdown-trigger {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font-family: inherit;
  vertical-align: middle;
}

.site-nav__dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-3));
  right: 0;
  min-width: 10rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: var(--space-2) 0;
  z-index: 200;
}

.site-nav__dropdown.is-open .site-nav__dropdown-menu {
  display: flex;
  flex-direction: column;
}

.site-nav__dropdown-item {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  transition: color var(--t-fast);
}

.site-nav__dropdown-item:hover,
.site-nav__dropdown-item.is-active {
  color: var(--text-primary);
}