.site-header {
  position: fixed;
  z-index: 800;
  top: 0;
  right: 0;
  left: 0;
  padding: 12px var(--container-padding);
  pointer-events: none;
}

.site-header__shell {
  width: min(100%, var(--command-bar-width));
  pointer-events: auto;
}

.site-header__bar {
  display: grid;
  min-height: 68px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-5);
  padding: 8px 10px 8px 14px;
  border: 1px solid var(--color-glass-highlight);
  border-radius: var(--radius-xl);
  background: var(--color-glass-white);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72), var(--shadow-sm);
  -webkit-backdrop-filter: blur(22px) saturate(115%);
  backdrop-filter: blur(22px) saturate(115%);
}

.site-header__spacer {
  height: 92px;
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
  color: var(--color-graphite);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

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

.site-header__logo {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  object-fit: contain;
}

.site-header__navigation {
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 1.7vw, 22px);
  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: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--color-graphite);
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-header__nav-list a:hover,
.site-header__mobile-links a:hover {
  color: var(--color-terracotta-deep);
}

.site-header__actions {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-2);
}

.site-header__cta {
  min-height: 44px;
  padding-inline: 14px;
  white-space: nowrap;
}

.site-header__age {
  display: inline-flex;
  min-width: 38px;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(36, 37, 42, 0.12);
  border-radius: var(--radius-pill);
  background: rgba(169, 182, 164, 0.46);
  color: var(--color-graphite);
  font-family: var(--font-heading);
  font-size: var(--text-2xs);
  font-weight: 800;
  line-height: 1;
}

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

@media (max-width: 66rem) {
  .site-header {
    padding: 8px var(--container-padding);
  }

  .site-header__bar {
    position: relative;
    min-height: 60px;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: var(--space-2);
    padding: 7px 8px 7px 12px;
  }

  .site-header__spacer {
    height: 76px;
  }

  .site-header__logo {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
  }

  .site-header__brand {
    gap: 8px;
    font-size: 1.0625rem;
  }

  .site-header__toggle {
    display: inline-flex;
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0;
    border: 1px solid rgba(36, 37, 42, 0.12);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.5);
    color: var(--color-graphite);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
  }

  .site-header__toggle:hover {
    background: rgba(255, 255, 255, 0.82);
    transform: translateY(1px);
  }

  .site-header__toggle-line {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform var(--transition-menu), opacity var(--transition-menu);
  }

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
    transform: translateY(6px) 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(-6px) rotate(-45deg);
  }

  .site-header__navigation {
    position: absolute;
    z-index: 810;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    display: grid;
    max-height: min(72vh, 540px);
    gap: var(--space-4);
    overflow: auto;
    padding: var(--space-4);
    border: 1px solid var(--color-glass-highlight);
    border-radius: var(--radius-xl);
    background: rgba(251, 249, 245, 0.94);
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity var(--transition-menu), transform var(--transition-menu), visibility var(--transition-menu);
    visibility: hidden;
    -webkit-backdrop-filter: blur(22px) saturate(115%);
    backdrop-filter: blur(22px) saturate(115%);
  }

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

  .site-header__nav-list {
    display: grid;
    justify-content: stretch;
    gap: var(--space-1);
  }

  .site-header__nav-list a {
    width: 100%;
    min-height: 48px;
    padding: 0 var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
  }

  .site-header__nav-list a:hover {
    background: rgba(197, 215, 220, 0.36);
  }

  .site-header__mobile-links {
    display: grid;
    gap: var(--space-1);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border);
  }

  .site-header__mobile-links a {
    display: block;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    color: var(--color-slate);
    font-size: var(--text-xs);
    text-decoration: none;
  }

  .site-header__actions .site-header__cta {
    display: none;
  }
}

@media (max-width: 23rem) {
  .site-header__brand-name {
    font-size: 0.9375rem;
  }
}

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