.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-primary-brand);
  color: var(--color-text-on-plum);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding-block: var(--space-2);
  gap: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text-on-plum);
  flex-shrink: 0;
  min-width: 0;
}

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

.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-weight: var(--font-weight-heading);
  font-size: 1.25rem;
  letter-spacing: var(--letter-spacing-heading);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 5px;
  flex-shrink: 0;
  border-radius: var(--radius-small);
}

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

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-on-plum);
  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: block;
  flex-shrink: 1;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  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-2) var(--space-1);
  font-size: var(--font-size-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  color: var(--color-text-on-plum);
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--radius-small);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-primary-accent);
}

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

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

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

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    display: none;
    width: 100%;
    flex-basis: 100%;
    order: 3;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: var(--space-2);
    border-top: 1px solid rgba(232, 220, 200, 0.2);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .site-header__nav-item {
    width: 100%;
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-body);
    text-transform: none;
    letter-spacing: normal;
    border-radius: 0;
    border-bottom: 1px solid rgba(232, 220, 200, 0.1);
  }

  .site-header__nav-link:hover {
    background-color: rgba(232, 220, 200, 0.1);
    color: var(--color-primary-accent);
  }
}

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

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

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

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