/* Navbar & Navigation */

.navbar-brand {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
}

.navbar-brand .brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
}

.brand-icon {
  width: 21px;
  height: 21px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.top-header {
  background: var(--gray-900);
  color: var(--gray-300);
  font-size: 0.85rem;
  padding: 8px 0;
  position: relative;
  z-index: 1050;
}

.top-header a {
  color: var(--gray-300);
  text-decoration: none;
  transition: color 0.2s;
}

.top-header a:hover {
  color: var(--white);
}

.top-header .dropdown-menu {
  color: var(--gray-800);
}

.top-header .dropdown-menu .dropdown-item {
  color: var(--gray-800);
}

.top-header .dropdown-menu .dropdown-item:hover {
  color: var(--gray-900);
  background: var(--gray-100);
}

.top-header .dropdown-menu .dropdown-item.active {
  color: var(--white);
  background: var(--primary);
}

.main-navbar {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  padding: 12px 0;
}

.main-navbar .nav-link {
  font-weight: 500;
  color: var(--gray-800);
  padding: 8px 16px;
  border-radius: 6px;
  transition: all 0.2s;
}

.main-navbar .nav-link:hover,
.main-navbar .nav-link.active {
  color: var(--primary);
  background: rgba(26, 95, 180, 0.08);
}

/* Search Box */
.search-box {
  position: relative;
  max-width: 540px;
  flex: 1;
  display: flex;
  align-items: center;
  border: 2px solid var(--gray-200);
  border-radius: 25px;
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(26, 95, 180, 0.1);
}

.search-type-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.search-type-dropdown {
  position: static;
}

.search-type-btn,
.search-type-btn:hover,
.search-type-btn:focus,
.search-type-btn:active,
.search-type-btn.show {
  background: none !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  color: var(--primary) !important;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 6px 0 16px;
  white-space: nowrap;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 2px;
  border-radius: 0 !important;
}

.search-type-btn::after {
  font-size: 0.65rem;
  margin-left: 2px;
  vertical-align: middle;
  opacity: 0.7;
}

.search-type-menu {
  min-width: 120px;
  border-radius: 10px;
  border: 1px solid var(--gray-200);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  padding: 4px 0;
  top: calc(100% + 6px) !important;
  left: 4px !important;
}

.search-type-menu .dropdown-item {
  font-size: 0.875rem;
  padding: 8px 16px;
  color: var(--gray-700, #374151);
}

.search-type-menu .dropdown-item:hover {
  background: rgba(26,95,180,0.07);
  color: var(--primary);
}

.search-type-menu .dropdown-item.active {
  background: rgba(26,95,180,0.10);
  color: var(--primary);
  font-weight: 600;
}

.search-type-divider {
  display: block;
  width: 1px;
  height: 20px;
  background: var(--gray-200);
  margin: 0 6px 0 4px;
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  box-shadow: none !important;
  padding: 12px 12px;
  padding-right: 50px;
  font-size: 0.95rem;
  background: transparent;
  border-radius: 0;
}

.search-box input:focus {
  border: none;
  box-shadow: none;
}

.search-box .btn-search {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  background: var(--primary);
  border: none;
  color: var(--white);
  flex-shrink: 0;
}

.search-box .btn-search:hover {
  background: var(--primary-dark);
}

/* Category Navigation */
.category-nav {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 0;
}

.category-nav .nav-link {
  padding: 16px 20px;
  color: var(--gray-700);
  font-weight: 500;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
}

.category-nav .nav-link:hover,
.category-nav .nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.category-nav .nav-link i {
  margin-right: 8px;
}

/* Mega Menu */
.category-nav .nav-item {
  position: relative;
}

.vertical-category-nav {
  background: rgba(255,255,255,0.95);
  position: relative;
  z-index: 9998;
  padding-bottom: 2px;
}

.vertical-category-nav .category-header {
  background: var(--primary);
  color: var(--white);
  padding: 14px 20px;
  font-weight: 600;
  font-size: 0.95rem;
}

.vertical-category-nav .category-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.vertical-category-nav .category-item {
  position: relative;  /* 创建定位上下文：让子菜单的 top:0 对齐当前 item 顶部 */
  border-bottom: 1px solid #f0f0f0;
}

.vertical-category-nav .category-item:last-child {
  border-bottom: none;
}

.vertical-category-nav .category-item > a {
  display: block;
  padding: 12px 20px;
  color: var(--dark);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.vertical-category-nav .category-item > a i:first-child {
  width: 20px;
  color: var(--primary);
  margin-right: 10px;
}

.vertical-category-nav .category-item > a .float-end {
  color: #999;
  font-size: 0.75rem;
  line-height: 1.5;
}

.vertical-category-nav .category-item:hover > a {
  background: #f8f9fa;
  color: var(--primary);
}

.vertical-category-nav .sub-menu {
  position: absolute;  /* 在栏目后面：相对当前 item 定位 */
  left: 100%;  /* 在栏目后面：出现在分类 item 右侧 */
  top: 0;     /* 顶部对齐当前 item */
  min-width: 600px;
  background: var(--white);
  border-left: 1px solid #e0e0e0;
  box-shadow: 5px 5px 20px rgba(0,0,0,0.15);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.2s ease;
  z-index: 9999;
}

.vertical-category-nav .category-item:hover .sub-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.vertical-category-nav .sub-menu-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 24px;
  align-items: start;     /* 永久置顶 */
  justify-items: start;
  align-content: start;
}

.vertical-category-nav .menu-column h6 {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-light);
}

.vertical-category-nav .menu-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.vertical-category-nav .menu-column ul li a {
  display: block;
  padding: 6px 0;
  color: #555;
  text-decoration: none;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.vertical-category-nav .menu-column ul li a:hover {
  color: var(--primary);
  padding-left: 8px;
}

.mega-menu .menu-column h6 {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-light);
}

.mega-menu .menu-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mega-menu .menu-column ul li {
  margin-bottom: 8px;
}

.mega-menu .menu-column ul li a {
  color: var(--gray-700);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
  display: block;
  padding: 4px 0;
}

.mega-menu .menu-column ul li a:hover {
  color: var(--primary);
  padding-left: 5px;
}

.mega-menu .menu-column ul li a i {
  margin-right: 6px;
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* Language Switcher */
.language-switcher {
  position: relative;
}

.language-switcher .dropdown-menu {
  min-width: 200px;
  padding: 8px;
}

.language-switcher .dropdown-item {
  padding: 10px 16px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switcher .dropdown-item:hover {
  background: var(--gray-100);
}

.language-switcher .dropdown-item .flag {
  width: 24px;
  height: 16px;
  border-radius: 2px;
}

.language-switcher .dropdown-item.active {
  background: var(--primary);
  color: var(--white);
}