/**
 * Shop Web 前台专用主题
 *
 * 说明：
 * 1. 定义前台特有的样式规则
 * 2. 继承全局变量和公共主题
 * 3. 包含导航栏、商品卡片等组件样式
 */

/* ==================== 会员等级颜色 ==================== */
:root {
  --member-normal-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --member-silver-bg: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 100%);
  --member-gold-bg: linear-gradient(135deg, #ffd700 0%, #ffec8b 100%);
  --member-platinum-bg: linear-gradient(135deg, #e5e4e2 0%, #f5f5f5 100%);
  --member-diamond-bg: linear-gradient(135deg, #b9f2ff 0%, #e0f7fa 100%);
  --member-level-text: #ffffff;
}

/* ==================== Top Bar ==================== */
.top-bar {
  background: linear-gradient(90deg, #1a1a2e 0%, #16213e 100%);
  color: var(--text-white);
  font-size: 12px;
  padding: 8px 0;
}

.top-bar a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  transition: var(--transition-base);
}

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

/* ==================== Main Navigation ==================== */
.main-nav {
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  padding: 12px 0;
}

.navbar-brand {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color) !important;
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-brand i {
  font-size: 28px;
}

.nav-link {
  color: var(--text-primary) !important;
  font-weight: 500;
  padding: 8px 16px !important;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color) !important;
  background: var(--primary-light);
}

.nav-link.active {
  color: var(--primary-color) !important;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 2px;
  background: var(--primary-color);
  border-radius: 2px;
}

/* ==================== Search Box ==================== */
.search-box {
  background: var(--secondary-color);
  border-radius: var(--radius-xl);
  padding: 4px;
  border: 2px solid transparent;
  transition: var(--transition-base);
}

.search-box:focus-within {
  border-color: var(--primary-color);
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 10px 16px;
  font-size: 14px;
}

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

.search-box button {
  border: none;
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition-base);
}

.search-box button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ==================== Hot Word Dropdown ==================== */
.hotword-box {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  padding: 12px;
  margin-top: 8px;
  animation: slideDown var(--transition-fast);
  max-height: 400px;
  overflow-y: auto;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hotword-item {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.hotword-item:hover {
  background: var(--primary-light);
  color: var(--primary-color);
}

.hotword-item .hotword-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.hotword-item .hotword-keyword {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hotword-item .hotword-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.hotword-item .hotword-count {
  font-size: 12px;
  color: var(--text-light);
  white-space: nowrap;
}

.hotword-item .hotword-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  white-space: nowrap;
}

.hotword-item .badge-recommend {
  background: var(--gradient-primary);
  color: var(--text-white);
}

.hotword-item .badge-trend-up {
  background: var(--success-color);
  color: white;
}

.hotword-item .badge-trend-down {
  background: var(--danger-color);
  color: white;
}

.hotword-item .badge-interest {
  background: var(--warning-color);
  color: #212529;
}

/* ==================== Cart Badge ==================== */
.cart-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background: var(--primary-color);
  color: var(--text-white);
  font-size: 11px;
  font-weight: 600;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-primary);
}

/* ==================== Page Header ==================== */
.page-header {
  background: var(--gradient-secondary);
  color: var(--text-white);
  padding: var(--spacing-xl) 0;
  margin-bottom: var(--spacing-xl);
}

.page-header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin: 0;
}

.page-header .breadcrumb {
  background: rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  display: inline-block;
}

.page-header .breadcrumb a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
}

.page-header .breadcrumb a:hover {
  color: var(--text-white);
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255,255,255,0.6);
}

.page-header .breadcrumb-item.active {
  color: var(--text-white);
  font-weight: 500;
}

/* ==================== Container ==================== */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ==================== Product Card ==================== */
.product-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition-base);
  overflow: hidden;
  height: 100%;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.product-card .card-img-top {
  height: 200px;
  object-fit: contain;
  background: var(--bg-secondary);
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
}

.product-card .card-body {
  padding: 16px;
}

.product-card .card-title {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
  height: 44px;
}

.product-card .price {
  color: var(--primary-color);
  font-size: 20px;
  font-weight: 700;
}

.product-card .price small {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  font-weight: 400;
}

/* ==================== Button Styles ==================== */
.btn-primary {
  background: var(--gradient-primary);
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition-base);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline-primary {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: 8px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition-base);
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-1px);
}

/* ==================== Footer ==================== */
footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: rgba(255,255,255,0.7);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

footer a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: var(--transition-base);
}

footer a:hover {
  color: var(--text-white);
}

/* ==================== Utility ==================== */
.img-placeholder {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

/* ==================== 用户头像组件 ==================== */

/* 通用头像容器 */
.user-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--text-white);
  font-weight: var(--font-weight-bold);
  overflow: hidden;
  position: relative;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 头像尺寸变体 */
.user-avatar-xs {
  width: 24px;
  height: 24px;
  font-size: 10px;
  border-width: 2px;
}

.user-avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 12px;
  border-width: 2px;
}

.user-avatar-base {
  width: 40px;
  height: 40px;
  font-size: 14px;
  border-width: 2px;
}

.user-avatar-md {
  width: 48px;
  height: 48px;
  font-size: 16px;
  border-width: 2px;
}

.user-avatar-lg {
  width: 64px;
  height: 64px;
  font-size: 20px;
  border-width: 2px;
}

.user-avatar-xl {
  width: 80px;
  height: 80px;
  font-size: 24px;
  border-width: 3px;
}

.user-avatar-2xl {
  width: 100px;
  height: 100px;
  font-size: 32px;
  border-width: 3px;
}

/* 头像边框变体 */
.user-avatar-bordered {
  border: 3px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.user-avatar-bordered-sm {
  border: 2px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.user-avatar-bordered-lg {
  border: 4px solid var(--primary-color);
  box-shadow: var(--shadow-md);
}

/* 头像占位符图标 */
.user-avatar .avatar-icon {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: inherit;
}

/* 头像上传/编辑按钮 */
.user-avatar .avatar-upload-btn {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 28px;
  height: 28px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 2px solid var(--bg-primary);
  z-index: 10;
}

.user-avatar .avatar-upload-btn:hover {
  background: var(--primary-hover);
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.user-avatar .avatar-upload-btn i {
  font-size: 12px;
  color: var(--text-white);
}

/* 头像悬停效果 */
.user-avatar-hover:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

/* 头像选择器网格（用于模态框选择头像） */
.avatar-selector-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  max-height: 400px;
  overflow-y: auto;
}

@media (max-width: 576px) {
  .avatar-selector-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
  }
}

/* 头像选择器单项 */
.avatar-option-item {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-full);
  border: 3px solid var(--border-color);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
}

.avatar-option-item:hover {
  border-color: var(--primary-color);
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.avatar-option-item.selected {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.avatar-option-item.selected::after {
  content: '\F26B';
  font-family: 'bootstrap-icons';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 24px;
  height: 24px;
  background: var(--primary-color);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: var(--shadow-sm);
}

.avatar-option-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--bg-primary);
}

/* 头像标签导航 */
.avatar-tabs .nav-link {
  padding: 10px 20px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  transition: all var(--transition-base);
}

.avatar-tabs .nav-link:hover {
  color: var(--primary-color);
  background: var(--bg-secondary);
}

.avatar-tabs .nav-link.active {
  color: var(--primary-color);
  background: transparent;
  border-bottom-color: var(--primary-color);
  font-weight: var(--font-weight-semibold);
}

/* 暗色主题适配 */
[data-theme="dark"] .user-avatar {
  border-color: var(--primary-color);
}

[data-theme="dark"] .user-avatar-bordered,
[data-theme="dark"] .user-avatar-bordered-sm,
[data-theme="dark"] .user-avatar-bordered-lg {
  border-color: var(--primary-color);
}

[data-theme="dark"] .user-avatar .avatar-upload-btn {
  background: var(--primary-color);
  border-color: var(--bg-primary);
}

[data-theme="dark"] .avatar-option-item {
  border-color: var(--border-color);
  background: var(--bg-secondary);
}

[data-theme="dark"] .avatar-option-item:hover {
  border-color: var(--primary-color);
}

[data-theme="dark"] .avatar-option-item.selected {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px var(--primary-light);
}

[data-theme="dark"] .avatar-option-item img {
  background: var(--bg-primary);
}

[data-theme="dark"] .avatar-tabs .nav-link {
  color: var(--text-secondary);
  background: transparent;
}

[data-theme="dark"] .avatar-tabs .nav-link:hover {
  color: var(--primary-color);
  background: var(--bg-secondary);
}

[data-theme="dark"] .avatar-tabs .nav-link.active {
  color: var(--primary-color);
  background: transparent;
}

/* ==================== Responsive ==================== */
@media (max-width: 991px) {
  .navbar-brand {
    font-size: 20px;
  }

  .search-box {
    max-width: 100%;
  }
}

@media (max-width: 767px) {
  .page-header {
    padding: var(--spacing-lg) 0;
  }

  .page-header h1 {
    font-size: var(--font-size-2xl);
  }

  .product-card .card-img-top {
    height: 150px;
  }
}

/* ==================== 暗夜黑主题补充样式 ==================== */
[data-theme="dark"] body {
  background-color: var(--bg-primary) !important;
  color: var(--text-primary);
}

[data-theme="dark"] .main-nav {
  background: var(--bg-secondary);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .search-box {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
}

[data-theme="dark"] .product-card {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

[data-theme="dark"] .hotword-box {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

[data-theme="dark"] .page-header {
  background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
}

[data-theme="dark"] .img-placeholder {
  background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
  color: var(--text-secondary);
}