.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--cream);
  border-bottom: var(--border-oak-40);
  box-shadow: var(--shadow-elevation);
}

.site-header__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad-mobile);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  text-decoration: none;
  color: var(--graphite);
  flex-shrink: 0;
}

.site-header__logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
}

.site-header__wordmark {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  white-space: nowrap;
}

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

.site-header__toggle:hover {
  background-color: rgba(35, 32, 30, 0.06);
}

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

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

.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: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--cream);
  border-bottom: var(--border-oak-40);
  padding: var(--space-16) var(--container-pad-mobile) var(--space-24);
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  z-index: 999;
}

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

.site-header__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.site-header__item {
  margin: 0;
  padding: 0;
}

.site-header__link {
  display: block;
  padding: var(--space-12) var(--space-8);
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--graphite);
  text-decoration: none;
  border-radius: var(--radius-tag);
  transition: color var(--transition-link), background-color var(--transition-link);
}

.site-header__link:hover {
  color: var(--cobalt);
  background-color: rgba(27, 58, 140, 0.06);
}

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

.site-header__link[aria-current="page"] {
  color: var(--raspberry);
  box-shadow: inset 0 -2px 0 0 var(--raspberry);
}

@media (min-width: 768px) {
  .site-header__inner {
    padding-inline: var(--container-pad-tablet);
    min-height: 72px;
  }

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

  .site-header__wordmark {
    font-size: 1.0625rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: block;
    position: static;
    background: transparent;
    border: none;
    padding: 0;
    max-height: none;
    overflow: visible;
  }

  .site-header__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-24);
  }

  .site-header__link {
    padding: var(--space-8) var(--space-4);
    font-size: 0.9375rem;
    font-weight: 500;
    white-space: nowrap;
  }

  .site-header__link[aria-current="page"] {
    box-shadow: inset 0 -2px 0 0 var(--raspberry);
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding-inline: var(--container-pad-desktop);
  }

  .site-header__list {
    gap: var(--space-32);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-line {
    transition: none;
  }

  .site-header__link {
    transition: none;
  }
}