.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-void);
}

.site-header__inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  gap: var(--space-4);
}

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

.site-header__brand-name {
  min-width: 0;
  color: var(--color-paper);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  white-space: nowrap;
}

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

.site-header__primary-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.25vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__primary-nav li,
.site-header__primary-nav li + li {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
}

.site-header__primary-nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--color-paper);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.site-header__primary-nav a:hover,
.site-header__primary-nav a[aria-current="page"] {
  border-color: var(--color-signal);
  color: var(--color-paper);
}

.site-header__reservation {
  min-height: 2.5rem;
  flex: 0 0 auto;
  padding: var(--space-2) var(--space-3);
  font-size: 0.75rem;
  white-space: nowrap;
}

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

.site-header__mobile-nav {
  display: none;
}

@media (max-width: 68rem) {
  .site-header__desktop-nav {
    display: none;
  }

  .site-header__inner {
    justify-content: space-between;
    min-height: 4rem;
  }

  .site-header__logo {
    width: 2rem;
    height: 2rem;
    flex-basis: 2rem;
  }

  .site-header__brand-name {
    font-size: 0.75rem;
  }

  .site-header__mobile-reservation {
    display: inline-flex;
    min-height: 2.5rem;
    align-items: center;
    margin-left: auto;
    border: 1px solid var(--color-signal);
    padding: var(--space-2) var(--space-3);
    background: var(--color-signal);
    color: var(--color-signal-ink);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    line-height: 1;
    text-decoration: none;
    text-transform: uppercase;
  }

  .site-header__mobile-reservation:hover {
    border-color: var(--color-paper);
    background: var(--color-paper);
    color: var(--color-void);
  }

  .site-header__toggle {
    display: inline-grid;
    width: 2.75rem;
    height: 2.75rem;
    flex: 0 0 2.75rem;
    place-content: center;
    gap: 0.3125rem;
    border: 1px solid var(--color-line);
    padding: 0;
    background: var(--color-graphite);
    color: var(--color-paper);
  }

  .site-header__toggle:hover {
    border-color: var(--color-signal);
  }

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

  .site-header.is-menu-open .site-header__toggle-line:nth-child(1) {
    transform: translateY(0.375rem) rotate(45deg);
  }

  .site-header.is-menu-open .site-header__toggle-line:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-menu-open .site-header__toggle-line:nth-child(3) {
    transform: translateY(-0.375rem) rotate(-45deg);
  }

  .site-header__mobile-nav {
    position: fixed;
    z-index: 99;
    inset: 4rem 0 0;
    display: block;
    visibility: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--color-void);
    opacity: 0;
    pointer-events: none;
    transform: translateX(100%);
    transition: transform var(--transition-standard), opacity var(--transition-standard), visibility var(--transition-standard);
  }

  .site-header__mobile-nav.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
  }

  .site-header__mobile-nav-inner {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    padding-block: var(--space-5) var(--space-4);
  }

  .site-header__mobile-index {
    margin: 0 0 var(--space-5);
    color: var(--color-signal);
    font-family: var(--font-mono);
    font-size: var(--text-label);
    font-weight: 500;
    letter-spacing: 0.08em;
    line-height: var(--leading-label);
  }

  .site-header__mobile-nav ul {
    display: grid;
    gap: 0;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--color-line);
    list-style: none;
  }

  .site-header__mobile-nav li,
  .site-header__mobile-nav li + li {
    margin: 0;
    padding: 0;
  }

  .site-header__mobile-nav li {
    border-bottom: 1px solid var(--color-line);
  }

  .site-header__mobile-nav a:not(.site-header__mobile-cta) {
    display: flex;
    min-height: 3.5rem;
    align-items: center;
    padding: var(--space-3) 0;
    color: var(--color-paper);
    font-family: var(--font-heading);
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    font-weight: 600;
    line-height: 1.15;
    text-decoration: none;
  }

  .site-header__mobile-nav a:not(.site-header__mobile-cta):hover {
    color: var(--color-signal);
  }

  .site-header__mobile-cta {
    width: 100%;
    margin-top: auto;
    padding-block: var(--space-4);
  }

  .site-menu-open {
    overflow: hidden;
  }
}

@media (max-width: 22rem) {
  .site-header__brand-name {
    display: none;
  }

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