.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-cream);
  border-bottom: var(--border-light);
}

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

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

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: var(--tracking-heading);
  color: var(--color-hazel);
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: var(--touch-target);
  height: var(--touch-target);
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.site-header__toggle:hover {
  background-color: var(--surface-azure-tint);
}

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

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-hazel);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.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;
  margin-left: auto;
}

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

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

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-target);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-hazel);
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-azure);
  background-color: var(--surface-azure-tint);
}

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

@media (max-width: 900px) {
  .site-header__inner {
    flex-wrap: wrap;
  }

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

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-cream);
    border-bottom: var(--border-light);
    box-shadow: var(--shadow-medium);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    padding: var(--space-md);
    z-index: 999;
  }

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

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

  .site-header__nav-link {
    display: flex;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .site-header__logo {
    width: 32px;
    height: 32px;
  }

  .site-header__inner {
    min-height: 56px;
  }

  .site-header__nav {
    max-height: calc(100vh - 56px);
  }
}