.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--white);
  border-bottom: 2px solid var(--navy);
  transition: box-shadow var(--transition-base);
}

.header.is-scrolled {
  box-shadow: var(--shadow-dropdown);
}

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

/* Logo */
.header__logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header__logo-img--mobile {
  display: none;
}

.header__logo-img {
  height: 60px;
  width: auto;
  object-fit: contain;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--scarlet);
  text-transform: uppercase;
}

@media (max-width: 767px) {
  .header__logo-img--desktop {
    display: none;
  }

  .header__logo-img--mobile {
    display: block;
  }
}

/* Desktop nav */
.header__nav {
  display: none;
}

@media (min-width: 1024px) {
  .header__nav {
    display: flex;
    flex: 1;
    justify-content: center;
  }
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.header__nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--charcoal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: var(--space-sm) 0;
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--scarlet);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link[aria-expanded="true"] {
  color: var(--scarlet);
}

.header__nav-link:hover::after,
.header__nav-link[aria-expanded="true"]::after {
  transform: scaleX(1);
}

.header__nav-link--mega .icon-chevron {
  width: 10px;
  height: 10px;
  transition: transform var(--transition-fast);
}

.header__nav-link--mega[aria-expanded="true"] .icon-chevron {
  transform: rotate(180deg);
}

/* Mega menu */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--white);
  border-top: 1px solid var(--border);
  box-shadow: var(--shadow-dropdown);
  padding: var(--space-2xl) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
}

.header__nav-link--mega[aria-expanded="true"] + .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2xl);
}

.mega-menu__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm) var(--space-xl);
}

.mega-menu__link {
  font-size: var(--text-sm);
  color: var(--charcoal);
  padding: var(--space-xs) 0;
  display: block;
  transition: color var(--transition-fast);
}

.mega-menu__link:hover {
  color: var(--scarlet);
}

.mega-menu__link--all {
  font-weight: var(--weight-semibold);
  color: var(--navy);
}

.mega-menu__promo {
  width: 280px;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}

.mega-menu__promo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mega-menu__promo-text {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: var(--white);
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
}

/* Action icons */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--charcoal);
  transition: color var(--transition-fast);
  position: relative;
}

.header__action-btn:hover {
  color: var(--scarlet);
}

.header__action-btn svg {
  width: 22px;
  height: 22px;
}

.header__cart-count {
  position: absolute;
  top: 4px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  font-size: 0.625rem;
}

.header__shop-btn {
  display: none;
}

@media (min-width: 1024px) {
  .header__shop-btn {
    display: inline-flex;
    white-space: nowrap;
  }
}

.header__menu-btn {
  display: flex;
}

@media (min-width: 1024px) {
  .header__menu-btn {
    display: none;
  }
}

/* Mobile nav dropdown */
.mobile-nav {
  display: none;
  position: static;
  width: 100%;
  max-width: none;
  background-color: var(--white);
  border-bottom: 2px solid var(--navy);
  overflow-y: auto;
  max-height: calc(100vh - 80px);
  transform: none;
  z-index: auto;
}

.mobile-nav.is-open {
  display: flex;
  flex-direction: column;
}

.mobile-nav__header {
  display: none;
}

/* Swap hamburger icon to X when menu is open */
.header__menu-btn[aria-expanded="true"] .icon-menu {
  display: none;
}
.header__menu-btn[aria-expanded="true"]::before {
  content: '✕';
  font-size: 20px;
  color: var(--charcoal);
}

.mobile-nav__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
}

.mobile-nav__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--charcoal);
}

.mobile-nav__close svg {
  width: 20px;
  height: 20px;
}

.mobile-nav__body {
  flex: 1;
  padding: var(--space-md) 0;
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--charcoal);
  border: none;
  border-bottom: 1px solid var(--border);
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  gap: var(--space-sm);
}

.mobile-nav__link:hover {
  color: var(--scarlet);
  background-color: var(--off-white);
}

.mobile-nav__link--expandable .icon-chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.mobile-nav__link--expandable[aria-expanded="true"] .icon-chevron {
  transform: rotate(180deg);
}

.mobile-nav__submenu {
  display: none;
  padding-left: var(--space-lg);
  background-color: var(--off-white);
}

.mobile-nav__link--expandable[aria-expanded="true"] + .mobile-nav__submenu {
  display: block;
}

.mobile-nav__sublink {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  color: var(--slate);
}

.mobile-nav__sublink:hover {
  color: var(--scarlet);
}

.mobile-nav__footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
}

.mobile-nav__footer .mobile-nav__link {
  gap: var(--space-sm);
  justify-content: flex-start;
}

.mobile-nav__footer svg {
  width: 18px;
  height: 18px;
}

/* Search overlay */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  z-index: var(--z-overlay);
  padding: var(--space-lg) 0;
  box-shadow: var(--shadow-dropdown);
  transform: translateY(-100%);
  transition: transform var(--transition-base);
}

.search-overlay.is-open {
  transform: translateY(0);
}

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

.search-overlay__input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-lg);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--off-white);
}

.search-overlay__input:focus {
  outline: none;
  border-color: var(--navy);
}

.search-overlay__submit,
.search-overlay__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--charcoal);
}

.search-overlay__submit:hover,
.search-overlay__close:hover {
  color: var(--scarlet);
}

.search-overlay__submit svg,
.search-overlay__close svg {
  width: 20px;
  height: 20px;
}

.search-overlay__results {
  margin-top: var(--space-md);
  max-height: 400px;
  overflow-y: auto;
}

.search-overlay__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.search-overlay__item {
  border-bottom: 1px solid var(--border);
}

.search-overlay__item:last-child {
  border-bottom: none;
}

.search-overlay__result {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  text-decoration: none;
  color: inherit;
  transition: background-color var(--transition-fast);
}

.search-overlay__result:hover {
  background-color: var(--off-white);
}

.search-overlay__result-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.search-overlay__result-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.search-overlay__result-name {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--charcoal);
}

.search-overlay__result-price {
  font-size: var(--text-xs);
  color: var(--slate);
}

.search-overlay__no-results {
  color: var(--slate);
  font-size: var(--text-sm);
  text-align: center;
  padding: var(--space-lg) 0;
}