.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-obsidian-caviar);
  border-bottom: 1px solid var(--color-delicate-amber-wire);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: 72px;
  padding-block: var(--space-sm);
}

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

.site-header__brand:hover {
  color: var(--color-pure-alabaster);
  text-decoration: none;
}

.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__nav-close {
  display: none;
}

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

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

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

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--space-xs);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-muted-cashmere-slate);
  text-decoration: none;
  transition: color var(--transition-color);
  white-space: nowrap;
}

.site-header__nav-link:hover {
  color: var(--color-liquid-cognac-gold);
  text-decoration: none;
}

.site-header__nav-link[aria-current="page"] {
  color: var(--color-burnished-sovereign-amber);
  position: relative;
}

.site-header__nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: var(--space-xs);
  right: var(--space-xs);
  bottom: 0;
  height: 1px;
  background-color: var(--color-burnished-sovereign-amber);
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 44px;
  min-height: 44px;
  padding: var(--space-xs);
  background: transparent;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-burnished-sovereign-amber);
  transition: background-color var(--transition-color), transform var(--transition-color), opacity var(--transition-color);
}

.site-header__toggle:hover .site-header__toggle-line {
  background-color: var(--color-liquid-cognac-gold);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-liquid-cognac-gold);
  outline-offset: 2px;
  box-shadow: var(--focus-ring);
}

.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);
}

@media (max-width: 1023px) {
  .site-header__inner {
    min-height: 64px;
  }

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

  .site-header__brand-text {
    font-size: 0.875rem;
    letter-spacing: 0.06em;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    max-width: 100%;
    background-color: var(--color-smoked-truffle-slate);
    border-left: 1px solid var(--color-delicate-amber-wire);
    padding: var(--space-xl) var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--transition-nav);
    overflow-y: auto;
    z-index: 1001;
    display: block;
  }

  .site-header__nav-close {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    color: var(--color-burnished-sovereign-amber);
    background: transparent;
    border: 1px solid var(--color-delicate-amber-wire);
    border-radius: 50%;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .site-header__nav-close span,
  .site-header__nav-close::before {
    content: "";
    position: absolute;
    width: 18px;
    height: 2px;
    background-color: currentColor;
  }

  .site-header__nav-close span {
    transform: rotate(45deg);
  }

  .site-header__nav-close::before {
    transform: rotate(-45deg);
  }

  .site-header__nav-close:hover {
    color: var(--color-liquid-cognac-gold);
  }

  .site-header__nav-close:focus-visible {
    outline: 2px solid var(--color-liquid-cognac-gold);
    outline-offset: 2px;
    box-shadow: var(--focus-ring);
  }

  .site-header__nav.is-open {
    transform: translateX(0);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
    margin-top: calc(44px + var(--space-lg));
  }

  .site-header__nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0 var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    text-transform: none;
    color: var(--color-pure-alabaster);
    border-bottom: 1px solid var(--color-delicate-amber-wire);
  }

  .site-header__nav-link:hover {
    color: var(--color-liquid-cognac-gold);
  }

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

  .site-header__nav-link[aria-current="page"]::after {
    display: none;
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    min-height: 80px;
  }

  .site-header__logo {
    width: 40px;
    height: 40px;
  }

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