.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--graphite-950);
  border-bottom: 1px solid var(--graphite-800);
  height: 72px;
}

.site-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad-mobile);
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.site-header__nav--left {
  justify-self: start;
}

.site-header__nav--right {
  justify-self: end;
}

.site-header__nav-link {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--parchment-300);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-color);
  white-space: nowrap;
}

.site-header__nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-color: var(--copper-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-transform);
}

.site-header__nav-link:hover {
  color: var(--parchment-100);
}

.site-header__nav-link:hover::after {
  transform: scaleX(1);
}

.site-header__nav-link:focus-visible {
  outline: 2px solid var(--copper-300);
  outline-offset: 2px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--parchment-100);
  justify-self: center;
  min-width: 0;
}

.site-header__logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--parchment-100);
  white-space: nowrap;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  justify-self: end;
  min-width: 0;
}

.site-header__booking {
  white-space: nowrap;
  flex-shrink: 0;
}

.site-header__age {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--parchment-500);
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.site-header__toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--parchment-100);
  transition: transform var(--transition-transform), opacity var(--transition-opacity);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--copper-300);
  outline-offset: 2px;
}

.site-header__mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--graphite-950);
  z-index: 999;
  overflow-y: auto;
  padding: var(--space-6) var(--container-pad-mobile);
  flex-direction: column;
  gap: var(--space-6);
}

.site-header__mobile-nav.is-open {
  display: flex;
}

.site-header__mobile-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-header__mobile-list li {
  margin: 0;
  padding: 0;
}

.site-header__mobile-link {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--parchment-100);
  text-decoration: none;
  padding: var(--space-3) 0;
  transition: color var(--transition-color);
}

.site-header__mobile-link:hover {
  color: var(--copper-300);
}

.site-header__mobile-link:focus-visible {
  outline: 2px solid var(--copper-300);
  outline-offset: 2px;
}

.site-header__mobile-booking {
  margin-top: auto;
}

@media (min-width: 768px) {
  .site-header__inner {
    padding: 0 var(--container-pad-tablet);
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding: 0 var(--container-pad-desktop);
  }
}

@media (max-width: 1023px) {
  .site-header__nav--left,
  .site-header__nav--right {
    display: none;
  }

  .site-header__inner {
    grid-template-columns: 1fr auto 1fr;
    display: flex;
  }

  .site-header__actions {
    justify-self: end;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__booking {
    display: none;
  }

  .site-header__age {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-header {
    height: 64px;
  }

  .site-header__mobile-nav {
    top: 64px;
  }

  .site-header__logo {
    width: 28px;
    height: 28px;
  }

  .site-header__brand-text {
    font-size: 1.125rem;
  }
}