/* WP: header.php — site header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.site-logo {
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.site-logo span {
  font-weight: 300;
}

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  gap: var(--space-lg);
}

.site-nav__link {
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-gray-900);
  position: relative;
  padding-block: 0.25rem;
  transition: color var(--transition-fast);
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-black);
  transition: width var(--transition-base);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-black);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  width: 100%;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Legacy placeholder link — replaced by .header-cart-toggle via cart-drawer.js (vanilla) */
.header-cart {
  display: none;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-black);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  z-index: var(--z-mobile-menu);
  background-color: var(--color-white);
  padding: var(--space-lg) var(--space-md);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav__link {
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: block;
  padding-block: var(--space-xs);
  min-height: 44px;
  line-height: 44px;
}

@media (min-width: 768px) {
  .site-nav {
    display: block;
  }

  .nav-toggle {
    display: none;
  }

  .mobile-nav {
    display: none;
  }
}