.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: var(--border);
  background: rgba(17, 17, 17, 0.98);
}

.site-header__inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  gap: var(--space-5);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-paper);
  text-decoration: none;
}

.site-header__mark {
  width: 2.5rem;
  height: 2.5rem;
  flex: 0 0 2.5rem;
  object-fit: contain;
}

.site-header__brand-name {
  overflow: hidden;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-header__navigation {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
}

.site-header__links {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: clamp(0.75rem, 1.4vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__links li,
.site-header__links li + li {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.site-header__links a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--color-paper);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__links a:hover {
  color: var(--color-paper);
  text-decoration: underline;
  text-decoration-color: var(--color-signal-orange);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.35em;
}

.site-header__reservation {
  display: inline-flex;
  min-height: 2.75rem;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 0.6875rem var(--space-3);
  border: 1px solid var(--color-signal-orange);
  background: var(--color-signal-orange);
  color: var(--color-obsidian);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.045em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.site-header__reservation:hover {
  border-color: var(--color-signal-orange-hover);
  background: var(--color-signal-orange-hover);
  color: var(--color-obsidian);
  text-decoration: none;
  transform: translateY(-2px);
}

.site-header__toggle,
.site-header__mobile-link {
  display: none;
}

@media (max-width: 75rem) {
  .site-header__inner {
    gap: var(--space-4);
  }

  .site-header__links {
    gap: var(--space-3);
  }

  .site-header__links a {
    font-size: 0.75rem;
  }

  .site-header__reservation {
    padding-inline: var(--space-3);
  }
}

@media (max-width: 65rem) {
  .site-menu-open {
    overflow: hidden;
  }

  .site-header__inner {
    min-height: 4.5rem;
    justify-content: space-between;
  }

  .site-header__mark {
    width: 2.125rem;
    height: 2.125rem;
    flex-basis: 2.125rem;
  }

  .site-header__toggle {
    display: inline-flex;
    width: 2.75rem;
    min-width: 2.75rem;
    height: 2.75rem;
    align-items: center;
    justify-content: center;
    gap: 0.3125rem;
    padding: 0;
    border: var(--border);
    background: var(--color-graphite);
    color: var(--color-paper);
    flex-direction: column;
  }

  .site-header__toggle-line {
    display: block;
    width: 1.125rem;
    height: 1px;
    background: currentColor;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
  }

  .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__navigation {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    max-height: calc(100vh - 4.5rem);
    overflow-y: auto;
    border-bottom: var(--border);
    background: var(--color-graphite);
    box-shadow: var(--shadow-overlay);
  }

  .site-header__navigation.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-5);
    padding: var(--space-5) max(var(--gutter), env(safe-area-inset-right)) var(--space-5) max(var(--gutter), env(safe-area-inset-left));
  }

  .site-header__links {
    display: grid;
    width: 100%;
    gap: 0;
    border-top: var(--border);
  }

  .site-header__links li {
    border-bottom: var(--border);
  }

  .site-header__links a {
    width: 100%;
    min-height: 3rem;
    padding-block: var(--space-2);
    font-size: var(--text-sm);
  }

  .site-header__mobile-link {
    display: flex;
  }

  .site-header__reservation {
    width: 100%;
    min-height: 3rem;
  }
}

@media (max-width: 23rem) {
  .site-header__brand {
    gap: var(--space-2);
  }

  .site-header__brand-name {
    font-size: 1rem;
  }
}