:root {
  --site-header-height: 6.5rem;
}

.site-header {
  position: relative;
  z-index: 9500;
  min-height: var(--site-header-height);
  padding: var(--space-4) var(--gutter-desktop) var(--space-3);
  pointer-events: none;
}

.site-header__shell {
  width: min(var(--container-max), 100%);
  margin-inline: auto;
  pointer-events: auto;
}

.site-header__bar {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) auto minmax(10rem, 1fr);
  min-width: 0;
  min-height: 4.25rem;
  align-items: center;
  gap: var(--space-4);
  padding: 0.625rem 0.75rem 0.625rem 1rem;
  border: 1px solid var(--color-bronze-line);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--color-surface-highlight), transparent 3rem), var(--color-charcoal);
  box-shadow: var(--shadow-nav);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-self: start;
  gap: var(--space-3);
  color: var(--color-platinum);
  text-decoration: none;
}

.site-header__logo {
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  gap: 0.1rem;
  line-height: 1;
}

.site-header__brand-name {
  overflow: hidden;
  color: var(--color-platinum);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__brand-place {
  color: var(--color-muted-platinum);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1.2;
  text-transform: uppercase;
}

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

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: clamp(0.6rem, 1.25vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-item,
.site-header__nav-item + .site-header__nav-item {
  display: flex;
  min-width: 0;
  align-items: center;
  margin: 0;
  padding: 0;
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  color: var(--color-platinum);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__nav-link::after {
  position: absolute;
  bottom: 0.25rem;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--color-antique-gold);
  content: "";
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.site-header__nav-link:hover::after,
.site-header__nav-link[aria-current="page"]::after {
  width: 1.5rem;
}

.site-header__nav-link[aria-current="page"] {
  color: var(--color-antique-gold);
}

.site-header__action,
.site-header__mobile-action {
  min-height: 2.75rem;
  align-items: center;
  justify-self: end;
  padding: 0.65rem 0.85rem;
  font-size: 0.625rem;
  white-space: nowrap;
}

.site-header__mobile-action,
.site-header__toggle,
.site-header__nav-item--mobile {
  display: none;
}

@media (max-width: 1050px) {
  :root {
    --site-header-height: 5.75rem;
  }

  .site-header {
    position: relative;
    min-height: var(--site-header-height);
    padding: var(--space-3) var(--gutter-tablet);
  }

  .site-header__bar {
    display: flex;
    min-height: 4rem;
    justify-content: space-between;
    padding: 0.5rem 0.625rem 0.5rem 0.875rem;
  }

  .site-header__logo {
    width: 1.75rem;
    height: 1.75rem;
    flex-basis: 1.75rem;
  }

  .site-header__brand-name {
    font-size: 0.875rem;
  }

  .site-header__toggle {
    position: relative;
    z-index: 2;
    display: inline-flex;
    width: 2.75rem;
    min-height: 2.75rem;
    flex: 0 0 2.75rem;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    border: 1px solid var(--color-bronze-line);
    border-radius: var(--radius-lg);
    color: var(--color-platinum);
  }

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

  .site-header--menu-open .site-header__toggle-line:nth-child(1) {
    transform: translateY(0.4rem) rotate(45deg);
  }

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

  .site-header--menu-open .site-header__toggle-line:nth-child(3) {
    transform: translateY(-0.4rem) rotate(-45deg);
  }

  .site-header__action {
    display: none;
  }

  .site-header__navigation {
    position: absolute;
    z-index: 1;
    top: calc(100% + var(--space-2));
    right: var(--gutter-tablet);
    left: var(--gutter-tablet);
    display: flex;
    max-height: calc(100vh - var(--site-header-height) - var(--space-5));
    min-height: 0;
    flex-direction: column;
    gap: var(--space-5);
    overflow-y: auto;
    padding: var(--space-6);
    border: 1px solid var(--color-bronze-line);
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, var(--color-surface-highlight), transparent 6rem), var(--color-charcoal);
    box-shadow: var(--shadow-nav);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.5rem);
    transition: opacity var(--transition-base), transform var(--transition-base);
    visibility: hidden;
  }

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

  .site-header__nav-list {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-header__nav-item,
  .site-header__nav-item + .site-header__nav-item,
  .site-header__nav-item--mobile {
    display: flex;
  }

  .site-header__nav-link {
    width: 100%;
    min-height: 3rem;
    border-bottom: 1px solid var(--color-line-light);
    font-size: var(--font-size-eyebrow);
  }

  .site-header__nav-link::after {
    right: auto;
    bottom: 0;
    left: 0;
    transform: none;
  }

  .site-header__nav-link:hover::after,
  .site-header__nav-link[aria-current="page"]::after {
    width: 1.5rem;
  }

  .site-header__mobile-action {
    display: inline-flex;
    width: 100%;
    min-height: 3rem;
    justify-content: center;
  }

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

@media (max-width: 389px) {
  .site-header {
    padding-inline: var(--gutter-mobile);
  }

  .site-header__brand-place {
    display: none;
  }

  .site-header__brand {
    gap: var(--space-2);
  }

  .site-header__brand-name {
    font-size: 0.8125rem;
    letter-spacing: 0.09em;
  }

  .site-header__navigation {
    right: var(--gutter-mobile);
    left: var(--gutter-mobile);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__navigation,
  .site-header__toggle-line,
  .site-header__nav-link::after {
    transition-duration: 150ms;
  }
}