.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-charcoal);
  color: var(--color-white);
  border-block-end: 1px solid var(--color-border-dark);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
  min-height: 4.5rem;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  min-width: 0;
  color: var(--color-white);
  text-decoration: none;
}

.site-header__logo {
  width: 2.75rem;
  height: 2.75rem;
  flex-shrink: 0;
  object-fit: contain;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.3125rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-default);
  cursor: pointer;
  transition: background-color var(--transition-color), border-color var(--transition-color);
}

.site-header__toggle:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

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

.site-header__toggle-line {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 1px;
  transition: transform var(--transition-transform), opacity var(--transition-color);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.4375rem) 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(-0.4375rem) rotate(-45deg);
}

.site-header__nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-charcoal);
  border-block-end: 1px solid var(--color-border-dark);
  box-shadow: var(--shadow-card);
  max-height: calc(100vh - 4.5rem);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.site-header__nav.is-open {
  display: block;
}

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: var(--space-md) var(--container-padding-mobile) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.site-header__nav-item {
  margin: 0;
}

.site-header__nav-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-label-size);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-smoke);
  text-decoration: none;
  border-radius: var(--radius-default);
  transition: color var(--transition-color), background-color var(--transition-color);
}

.site-header__nav-link:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.08);
}

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

.site-header__nav-link[aria-current="page"] {
  color: var(--color-white);
  border-block-end: 2px solid var(--color-brass);
  padding-block-end: calc(var(--space-sm) - 2px);
}

@media (min-width: 64rem) {
  .site-header__inner {
    min-height: 5rem;
    padding-inline: var(--container-padding-desktop);
  }

  .site-header__logo {
    width: 2.75rem;
    height: 2.75rem;
  }

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

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: block;
    position: static;
    background-color: transparent;
    border-block-end: none;
    box-shadow: none;
    max-height: none;
    overflow-y: visible;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-lg);
    padding: 0;
    margin: 0;
  }

  .site-header__nav-link {
    padding: var(--space-xs) 0;
    color: var(--color-smoke);
    white-space: nowrap;
  }

  .site-header__nav-link:hover {
    color: var(--color-white);
    background-color: transparent;
  }

  .site-header__nav-link[aria-current="page"] {
    color: var(--color-white);
    border-block-end: 2px solid var(--color-brass);
    padding-block-end: calc(var(--space-xs) - 2px);
  }
}

@media (min-width: 80rem) {
  .site-header__brand-text {
    font-size: 1.0625rem;
  }
}

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