.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-charcoal-black);
  border-bottom: 1px solid var(--border-gold);
  transition: background-color var(--transition-base);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  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-soft-ivory);
  flex-shrink: 0;
  min-width: 0;
}

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-soft-ivory);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.site-header__toggle:hover {
  border-color: var(--color-antique-gold);
  background-color: rgba(201, 162, 39, 0.1);
}

.site-header__toggle:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
}

.site-header__toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-soft-ivory);
  margin-block: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.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__nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-charcoal-black);
  border-bottom: 1px solid var(--border-gold);
  box-shadow: var(--shadow-soft);
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  z-index: 999;
}

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

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

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

.site-header__nav-link {
  display: block;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-body);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-soft-ivory);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  border-bottom: 1px solid rgba(201, 162, 39, 0.1);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-antique-gold);
  background-color: rgba(201, 162, 39, 0.05);
}

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

@media (min-width: 900px) {
  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: block;
    position: static;
    background: transparent;
    border: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    z-index: auto;
  }

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

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

  .site-header__nav-link {
    padding: var(--space-sm) 0;
    border-bottom: none;
    position: relative;
  }

  .site-header__nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background-color: var(--color-antique-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-fast);
  }

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

  .site-header__nav-link:hover,
  .site-header__nav-link:focus-visible {
    background-color: transparent;
  }
}

@media (max-width: 899px) {
  .site-header__brand-text {
    display: none;
  }

  .site-header__logo {
    width: 36px;
    height: 36px;
  }
}