.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(3, 9, 21, 0.985);
  box-shadow: 0 10px 28px rgba(3, 9, 21, 0.2);
}

.admin-bar .site-header {
  top: 32px;
}

@media (max-width: 782px) {
  .admin-bar .site-header {
    top: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    transition: none;
  }
}