.site-header {
  position: sticky;
  z-index: 900;
  top: 0;
  width: 100%;
  min-height: 4.25rem;
  border-bottom: 1px solid transparent;
  background: rgba(250, 248, 243, 0.96);
  transition: border-color var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}

.site-header__inner {
  display: flex;
  min-height: 4.25rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-graphite-900);
  text-decoration: none;
}

.site-header__brand:hover { color: var(--color-graphite-900); }

.site-header__mark {
  width: 2.25rem;
  height: 2.25rem;
  flex: 0 0 2.25rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.0625rem;
  line-height: 1;
}

.site-header__brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.site-header__brand-subtitle {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__toggle {
  display: inline-grid;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 2.75rem;
  place-content: center;
  gap: 0.3125rem;
  border: var(--border-sand);
  background: var(--color-white-0);
  padding: 0;
}

.site-header__toggle-line {
  display: block;
  width: 1.25rem;
  height: 1px;
  background: var(--color-graphite-900);
  transform-origin: center;
  transition: transform var(--duration-fast) var(--ease-out), opacity var(--duration-fast) var(--ease-out);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) { transform: translateY(0.375rem) rotate(45deg); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) { transform: translateY(-0.375rem) rotate(-45deg); }

.site-header__nav {
  position: absolute;
  z-index: 1;
  top: 100%;
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100vh - 4.25rem);
  overflow-y: auto;
  border-top: var(--border-sand);
  border-bottom: var(--border-sand);
  background: var(--color-ivory-50);
  box-shadow: var(--shadow-soft);
  padding: var(--space-4) var(--container-padding) var(--space-5);
}

.site-header__nav.is-open { display: grid; gap: var(--space-4); }

.site-header__nav-list {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li { margin: 0; padding: 0; }

.site-header__nav-list a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  border-bottom: 1px solid var(--color-border-soft);
  color: var(--color-graphite-900);
  font-size: var(--text-nav);
  font-weight: 700;
  text-decoration: none;
}

.site-header__nav-list a:hover { color: var(--color-champagne-dark); }
.site-header__reservation { width: 100%; }
.site-header__external-note { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media (min-width: 70rem) {
  .site-header {
    min-height: 4.75rem;
    background: rgba(250, 248, 243, 0.9);
  }

  .site-header__inner { min-height: 4.75rem; gap: var(--space-5); }
  .site-header__mark { width: 2.625rem; height: 2.625rem; flex-basis: 2.625rem; }
  .site-header__brand-name { font-size: 1.375rem; }
  .site-header__toggle { display: none; }

  .site-header__nav {
    position: static;
    display: flex;
    min-width: 0;
    max-height: none;
    flex: 1 1 auto;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-4);
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
    padding: 0;
  }

  .site-header__nav-list {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: clamp(0.625rem, 1.3vw, 1.25rem);
  }

  .site-header__nav-list li { display: flex; align-items: center; }
  .site-header__nav-list a {
    min-height: auto;
    border: 0;
    font-size: 0.8125rem;
    line-height: 1.2;
    white-space: nowrap;
  }

  .site-header__reservation { width: auto; flex: 0 0 auto; white-space: nowrap; }
}

@media (min-width: 86rem) {
  .site-header__nav-list a { font-size: var(--text-nav); }
}

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