/* ============================================================
   HEADER.CSS — 2행 헤더 + 메가 메뉴
   ============================================================ */

/* ── Utility Bar ── */
.header-util-bar {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--text-xs);
  text-align: center;
  padding: 0.45rem var(--container-pad);
  letter-spacing: 0.01em;
}
.header-util-bar a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.header-util-bar a:hover {
  color: #fff;
}

/* ── Main Header (1행: 로고 + 검색 + 액션) ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}
.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.header-main {
  border-bottom: 1px solid var(--color-border);
}
.header-main .container {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: 68px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ── Logo ── */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  text-decoration: none;
}
.header-logo img {
  width: 200px;
}

/* ── Search Bar ── */
.header-search {
  flex: 1;
  max-width: 480px;
  display: flex;
  align-items: center;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}
.header-search:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(173, 216, 230, 0.25);
}
.header-search-input {
  flex: 1;
  border: none;
  outline: none;
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
  background: transparent;
  color: var(--color-text);
}
.header-search-input::placeholder {
  color: var(--color-muted);
}
.header-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}
.header-search-btn:hover {
  background: var(--color-primary-dark);
}
.header-search-btn svg {
  width: 18px;
  height: 18px;
}

/* ── Header Actions ── */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex-shrink: 0;
}

/* ── Language Dropdown (1.3) ── */
.lang-dropdown {
  position: relative;
  flex-shrink: 0;
}
.lang-dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.3rem 0.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-alt);
  cursor: pointer;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  white-space: nowrap;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
}
.lang-dropdown-btn svg {
  width: 10px;
  height: 10px;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}
.lang-dropdown.is-open .lang-dropdown-btn {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.lang-dropdown.is-open .lang-dropdown-btn svg {
  transform: rotate(180deg);
}
.lang-dropdown-list {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  list-style: none;
  min-width: 96px;
  padding: var(--space-1) 0;
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition:
    opacity var(--transition-fast),
    visibility var(--transition-fast),
    transform var(--transition-fast);
}
.lang-dropdown.is-open .lang-dropdown-list {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-option {
  padding: 0.45rem 0.9rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}
.lang-option:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}
.lang-option.is-active {
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}

.header-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--color-text);
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
  position: relative;
}
.header-icon-btn:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}
.header-icon-btn svg {
  width: 20px;
  height: 20px;
}

.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 16px;
  height: 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 10px;
  font-weight: var(--font-bold);
  display: none;
  align-items: center;
  justify-content: center;
  line-height: 1;
  pointer-events: none;
  padding: 0 2px;
}

/* ── Login Button ── */
.header-login-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border-dark);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  white-space: nowrap;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}
.header-login-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.header-login-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ── Signup Button (1.5) ── */
.header-signup-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-primary);
  background: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: #fff;
  white-space: nowrap;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast);
}
.header-signup-btn:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* ── Hamburger ── */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}
.hamburger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-fast);
}
.hamburger-btn.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-btn.is-open span:nth-child(2) {
  opacity: 0;
}
.hamburger-btn.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ══ MEGA MENU NAV BAR (2행) ══════════════════════════════ */
.header-nav-bar {
  background: var(--color-white);
}
.header-nav-bar .container {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.mega-menu-list {
  display: flex;
  align-items: stretch;
  list-style: none;
  gap: 0;
  position: relative;
}

.mega-item {
  position: static;
}

.mega-item-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 var(--space-4);
  height: 48px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast);
}
.mega-item-trigger svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}
.mega-item.is-open .mega-item-trigger {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.mega-item.is-open .mega-item-trigger svg {
  transform: rotate(180deg);
}

/* ── Mega Panel — 카드 그리드 레이아웃 ── */
.mega-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: none;
  padding: var(--space-5) var(--space-6) var(--space-6);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base);
  pointer-events: none;
}
.mega-item.is-open .mega-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mega-panel-title {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.mega-panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-3);
}

.mega-sub-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-2);
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
  border: 1.5px solid transparent;
}
.mega-sub-card:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-color: var(--color-border);
}

.mega-sub-card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-alt);
  flex-shrink: 0;
}
.mega-sub-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mega-sub-card-label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-align: center;
  line-height: 1.4;
}

/* 인쇄 가이드 링크 */
.header-nav-guide-link {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--space-4);
  height: 48px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-muted);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-left: auto;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast);
}
.header-nav-guide-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ══ MOBILE NAV DRAWER ════════════════════════════════════ */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  pointer-events: none;
}
.mobile-nav.is-open {
  pointer-events: auto;
}

.mobile-nav-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.mobile-nav.is-open .mobile-nav-backdrop {
  opacity: 1;
}

.mobile-nav-drawer {
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.mobile-nav.is-open .mobile-nav-drawer {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-header .header-logo {
  min-width: 0;
  flex: 1;
}
.mobile-nav-header .header-logo svg {
  width: 160px;
  max-width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}
.mobile-nav-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}
.mobile-nav-close:hover {
  background: var(--color-bg-alt);
}

.mobile-nav-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-3) var(--space-4);
  padding: 0.45rem 0.8rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg);
  transition: border-color var(--transition-fast);
}
.mobile-nav-search:focus-within {
  border-color: var(--color-primary);
}
.mobile-nav-search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.mobile-nav-search-input::placeholder {
  color: var(--color-muted);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  padding: var(--space-2) 0;
}

/* ── 모바일 아코디언 (1.2) ── */
.mobile-nav-accordion {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-accordion:last-of-type {
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}
.mobile-nav-category:hover {
  color: var(--color-primary);
}
.accordion-arrow {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.mobile-nav-accordion.is-open .accordion-arrow {
  transform: rotate(180deg);
}
.mobile-nav-sub-list {
  display: none;
  flex-direction: column;
  background: #fff;
  padding: var(--space-1) 0 var(--space-3);
}
.mobile-nav-accordion.is-open .mobile-nav-sub-list {
  display: flex;
}
.mobile-nav-sub-link {
  display: block;
  padding: var(--space-3) var(--space-6) var(--space-3) var(--space-10);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: color var(--transition-fast);
}
.mobile-nav-sub-link:hover {
  color: var(--color-primary);
}

/* 하단 공통 링크 */
.mobile-nav-common-link {
  display: block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text);
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
}
.mobile-nav-common-link:first-of-type {
  margin-top: var(--space-2);
}
.mobile-nav-common-link:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

/* ── Responsive ── */
@media (max-width: 1023px) {
  .header-nav-bar {
    display: none;
  }
  .hamburger-btn {
    display: flex;
  }
  .mobile-nav {
    display: block;
  }
  .header-search {
    display: none;
  }
  .lang-dropdown {
    display: none;
  }
}

@media (max-width: 767px) {
  .header-main .container {
    height: 56px;
  }
  .header-logo-text {
    font-size: var(--text-base);
  }
  .header-logo img {
    width: 130px;
  }
}

@media (max-width: 479px) {
  .header-logo img {
    width: 120px;
  }
}

@media (max-width: 479px) {
  .header-util-bar {
    display: none;
  }
}