.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--surface-primary);
  border-bottom: var(--border-thin);
  box-shadow: 0 2px 8px rgba(24, 54, 56, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-2xs) var(--space-sm);
  min-height: 72px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  text-decoration: none;
  color: var(--color-petrol);
  flex-shrink: 0;
}

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

.site-header__logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-petrol);
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-champagne);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: rgba(183, 154, 104, 0.1);
  border-color: var(--color-copper);
}

.site-header__toggle:focus-visible {
  outline: var(--border-focus);
  outline-offset: 2px;
  box-shadow: var(--focus-ring);
}

.site-header__toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-petrol);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

.site-header__nav {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  list-style: none;
  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-block;
  padding: var(--space-3xs) var(--space-2xs);
  font-size: var(--text-small);
  line-height: var(--leading-small);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-petrol);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.site-header__nav-link:hover {
  color: var(--color-copper);
  background-color: rgba(165, 104, 78, 0.08);
}

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

.site-header__nav-item--contact .site-header__nav-link {
  color: var(--color-copper);
  border: 1px solid var(--color-copper);
  padding: var(--space-3xs) var(--space-2xs);
}

.site-header__nav-item--contact .site-header__nav-link:hover {
  background-color: var(--color-copper);
  color: var(--color-ivory);
}

@media (max-width: 62rem) {
  .site-header__inner {
    flex-wrap: wrap;
    padding: var(--space-2xs) var(--space-xs);
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--surface-primary);
    padding: var(--space-sm) var(--space-xs);
    overflow-y: auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    z-index: 999;
    box-shadow: 0 8px 24px rgba(24, 54, 56, 0.12);
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2xs);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-2xs) var(--space-2xs);
    font-size: 1.125rem;
    text-align: center;
    border-bottom: 1px solid rgba(183, 154, 104, 0.3);
  }

  .site-header__nav-item--contact .site-header__nav-link {
    border: 1px solid var(--color-copper);
    border-bottom: 1px solid var(--color-copper);
  }
}

@media (max-width: 30rem) {
  .site-header__inner {
    min-height: 64px;
  }

  .site-header__logo {
    width: 44px;
    height: 44px;
  }

  .site-header__brand-text {
    font-size: 1.25rem;
  }

  .site-header__nav {
    top: 64px;
  }
}