.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-limestone);
  border-bottom: var(--border-hairline);
  box-shadow: var(--shadow-soft);
}

.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;
  gap: var(--space-4);
  min-height: 64px;
}

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

.site-header__brand:hover {
  text-decoration: none;
  color: var(--color-navy);
}

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

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-navy);
  white-space: nowrap;
}

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

.site-header__toggle:hover {
  background-color: var(--color-line);
  border-color: var(--color-navy-soft);
}

.site-header__toggle[aria-expanded="true"] {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
}

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

.site-header__toggle-icon {
  position: relative;
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.site-header__toggle-icon::before {
  top: -7px;
}

.site-header__toggle-icon::after {
  top: 7px;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon {
  background-color: transparent;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::before {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--color-ivory);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--color-ivory);
}

.site-header__nav-wrap {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-limestone);
  border-bottom: var(--border-hairline);
  box-shadow: var(--shadow-soft);
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  padding: var(--space-4) var(--container-pad-mobile) var(--space-5);
}

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

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

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

.site-header__nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-navy);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__nav-link:hover {
  background-color: var(--color-ivory);
  color: var(--color-aegean);
  text-decoration: none;
}

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

.site-header__cta {
  margin-top: var(--space-4);
  width: 100%;
}

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

  .site-header__nav-wrap {
    padding-inline: var(--container-pad-tablet);
    max-height: calc(100vh - 72px);
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding-inline: var(--container-pad-desktop);
    min-height: 80px;
    gap: var(--space-5);
  }

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

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

  .site-header__toggle {
    display: none;
  }

  .site-header__nav-wrap {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-5);
    background-color: transparent;
    border-bottom: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    padding: 0;
    flex: 1;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
  }

  .site-header__nav-link {
    padding: var(--space-2) var(--space-1);
    font-size: 0.9375rem;
    line-height: 1.2;
    white-space: nowrap;
  }

  .site-header__nav-link:hover {
    background-color: transparent;
    color: var(--color-aegean-deep);
    text-decoration: underline;
    text-decoration-color: var(--color-bronze);
    text-underline-offset: 3px;
  }

  .site-header__nav-link[aria-current="page"] {
    color: var(--color-aegean);
    box-shadow: inset 0 -2px 0 0 var(--color-bronze);
    text-decoration: none;
  }

  .site-header__cta {
    margin-top: 0;
    width: auto;
    flex-shrink: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-icon,
  .site-header__toggle-icon::before,
  .site-header__toggle-icon::after {
    transition: none;
  }
}