/* ============================================
   PetJoy - Base Styles
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition), color var(--transition);
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* ========== Layout ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
}

.logo-icon {
  font-size: 28px;
  line-height: 1;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  background: none;
  border: none;
  font-family: inherit;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
}

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

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 36px;
  font-size: 17px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========== Hero Section ========== */
.hero {
  padding: 60px 0 40px;
  background: var(--gradient-hero);
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== Product Grid ========== */
.section {
  padding: 40px 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  color: var(--text-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 4px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

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

.card-media-wrapper {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.card-media-wrapper img,
.card-media-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-card:hover .card-media-wrapper img {
  transform: scale(1.05);
}

.card-media-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-card));
}

.card-badges {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 2;
}

.badge {
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-sale {
  background: var(--danger);
}

.badge-new {
  background: var(--accent);
}

.badge-stock-low {
  background: var(--warning);
}

.badge-stock-out {
  background: #999;
}

.card-content {
  padding: 20px;
}

.card-category {
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.card-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.card-summary {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}

.price-current {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
}

.price-original {
  font-size: 15px;
  color: var(--text-tertiary);
  text-decoration: line-through;
}

.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  padding: 3px 10px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 500;
}

/* ========== Filters Bar ========== */
.filters-bar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-chip {
  padding: 6px 16px;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-family: inherit;
}

.filter-chip:hover {
  background: var(--bg-card);
}

.filter-chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.search-input {
  flex: 1;
  min-width: 200px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* ========== Product Detail ========== */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 40px 0;
}

@media (max-width: 768px) {
  .product-detail {
    grid-template-columns: 1fr;
  }
  /* 移动端单栏布局下取消 sticky，让图片随内容一起滚动
     （用更高优先级覆盖后面的基础 sticky 规则） */
  .product-detail .detail-gallery {
    position: static;
  }
}

.detail-gallery {
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.gallery-main {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-tertiary);
  margin-bottom: 12px;
  box-shadow: var(--shadow-md);
}

.gallery-main img,
.gallery-main video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-main .placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
}

.gallery-thumbs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.gallery-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  position: relative;
}

.gallery-thumb.active {
  border-color: var(--accent);
}

.gallery-thumb img,
.gallery-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumb .thumb-type-icon {
  position: absolute;
  bottom: 2px;
  right: 2px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border-radius: 4px;
  font-size: 10px;
  padding: 1px 4px;
}

.detail-info h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
}

.detail-summary {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.detail-price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
}

.detail-price-row .price-current {
  font-size: 32px;
}

.detail-stock {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.stock-in {
  background: var(--success-bg);
  color: var(--success);
}

.stock-low {
  background: var(--warning-bg);
  color: var(--warning);
}

.stock-out {
  background: var(--danger-bg);
  color: var(--danger);
}

.detail-section {
  margin-bottom: 28px;
}

.detail-section h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-section p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  white-space: pre-wrap;
}

.params-table {
  width: 100%;
  border-collapse: collapse;
}

.params-table tr {
  border-bottom: 1px solid var(--border);
}

.params-table td {
  padding: 12px 16px;
  font-size: 14px;
}

.params-table td:first-child {
  color: var(--text-secondary);
  font-weight: 600;
  width: 40%;
}

.params-table td:last-child {
  color: var(--text-primary);
}

.detail-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

.audio-player {
  width: 100%;
  margin-top: 8px;
  border-radius: var(--radius-md);
}

/* ========== Admin Panel ========== */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: calc(100vh - var(--header-height));
}

@media (max-width: 768px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
}

.admin-sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px 0;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  border-left: 3px solid transparent;
  background: none;
  border-top: none;
  border-bottom: none;
  border-right: none;
  font-family: inherit;
  width: 100%;
  text-align: left;
}

.admin-nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.admin-nav-item.active {
  background: var(--accent-bg);
  color: var(--accent);
  border-left-color: var(--accent);
}

.admin-content {
  padding: 24px 32px;
  overflow-y: auto;
}

.admin-page-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
}

/* Stats cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
}

.stat-icon {
  font-size: 24px;
  margin-bottom: 4px;
}

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.data-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  font-weight: 700;
}

.data-table td {
  padding: 14px 16px;
  font-size: 14px;
  border-top: 1px solid var(--border);
}

.data-table tr:hover {
  background: var(--bg-tertiary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  line-height: 1;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* Form */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Parameter editor */
.param-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.param-row .form-input {
  padding: 8px 12px;
}

.param-remove {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  cursor: pointer;
  color: var(--danger);
  font-size: 18px;
  flex-shrink: 0;
}

/* Media manager */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.media-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
}

.media-item img,
.media-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-item .media-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.media-item:hover .media-overlay {
  opacity: 1;
}

.media-type-badge {
  position: absolute;
  top: 4px;
  left: 4px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
}

.media-type-image { background: #0071e3; }
.media-type-video { background: #ff3b30; }
.media-type-audio { background: #34c759; }

/* Upload zone */
.upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-tertiary);
}

.upload-zone:hover {
  border-color: var(--accent);
  background: var(--accent-bg);
}

.upload-zone .upload-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

/* Login */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--gradient-hero);
}

.login-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-xl);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.login-title {
  text-align: center;
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.login-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 15px;
}

/* Toast */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  max-width: 360px;
}

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--accent); }

/* Payment providers */
.provider-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
}

.provider-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.provider-status {
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 700;
}

.status-active {
  background: var(--success-bg);
  color: var(--success);
}

.status-inactive {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .admin-content {
    padding: 16px;
  }
  
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Loading */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

/* Cart badge */
.cart-badge {
  position: relative;
}

.cart-count {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--danger);
  color: #fff;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

/* Section divider */
.section-divider {
  height: 1px;
  background: var(--border);
  margin: 40px 0;
}

/* ============================================
   全站背景底板系统（管理员后台上传高清长图）
   ============================================ */

/* 背景图层：fixed 定位，天然免受移动端 background-attachment 兼容问题 */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  transition: background-image 0.6s ease;
}

/* 可读性遮罩：长图之上盖一层主题色薄纱 */
.bg-overlay {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background: linear-gradient(180deg,
    var(--bg-veil) 0%,
    color-mix(in srgb, var(--bg-veil) 88%, transparent) 45%,
    var(--bg-veil) 100%);
  opacity: 0;
  transition: opacity 0.5s ease;
}

html.has-bg .bg-overlay {
  opacity: 1;
}

/* 极光光斑：缓慢漂浮的彩色 blob，无背景时也提供氛围光 */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.55;
}

html.has-bg .bg-glow {
  opacity: 0.75;
  mix-blend-mode: soft-light;
}

.bg-glow .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  animation: floatBlob 22s ease-in-out infinite;
}

.bg-glow .blob-1 {
  width: 42vw;
  height: 42vw;
  top: -12%;
  left: -8%;
  background: var(--glow-1);
}

.bg-glow .blob-2 {
  width: 36vw;
  height: 36vw;
  top: 30%;
  right: -10%;
  background: var(--glow-2);
  animation-delay: -7s;
  animation-duration: 26s;
}

.bg-glow .blob-3 {
  width: 30vw;
  height: 30vw;
  bottom: -12%;
  left: 28%;
  background: var(--glow-3);
  animation-delay: -14s;
  animation-duration: 30s;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(6vw, 4vh) scale(1.12); }
  66% { transform: translate(-5vw, -3vh) scale(0.92); }
}

/* ===== 有背景图时的玻璃化适配：前景全部变半透明玻璃，透出底板 ===== */
html.has-bg .hero {
  background: transparent;
}

html.has-bg .site-header {
  background: var(--glass-bg) !important;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

html.has-bg .product-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

html.has-bg .filter-chip {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

html.has-bg .search-input,
html.has-bg .form-input,
html.has-bg .form-select,
html.has-bg .form-textarea {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

html.has-bg .detail-price-row,
html.has-bg .params-table tr {
  background: transparent;
}

html.has-bg .admin-sidebar,
html.has-bg .stat-card,
html.has-bg .data-table,
html.has-bg .provider-card,
html.has-bg .appearance-card,
html.has-bg footer {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

html.has-bg .card-media-placeholder {
  background: linear-gradient(135deg, var(--glass-bg), var(--bg-tertiary));
}

html.has-bg [data-theme="instagram"] .site-header,
html.has-bg [data-theme="cartoon"] .site-header {
  background: var(--glass-bg) !important;
}

/* ============================================
   酷炫视觉升级
   ============================================ */

/* Header 品牌胶囊 */
.header-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  white-space: nowrap;
}

/* 语言切换器：玻璃拟态分段胶囊（中 / EN） */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-xl);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
}

.lang-switcher button {
  padding: 5px 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  border-radius: var(--radius-xl);
  transition: var(--transition);
  font-family: inherit;
  line-height: 1.2;
}

.lang-switcher button:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.lang-switcher button.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px -2px var(--accent-glow);
}

@media (max-width: 768px) {
  .header-pill {
    display: none;
  }
}

/* Hero：眉标题 + 渐变流光大标题 + 数据条 */
.hero {
  padding: 88px 0 56px;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-eyebrow {
  display: inline-block;
  padding: 7px 18px;
  border-radius: var(--radius-xl);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  animation: fadeUp 0.6s ease both;
}

.hero-title {
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 18px;
  color: var(--text-primary);
  animation: fadeUp 0.7s ease 0.1s both;
}

.hero p {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  margin-bottom: 36px;
  animation: fadeUp 0.7s ease 0.2s both;
}

.hero-actions {
  animation: fadeUp 0.7s ease 0.3s both;
}

/* 渐变流光文字 */
.gradient-text {
  background: var(--gradient-price);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: textShine 6s linear infinite;
}

@keyframes textShine {
  to { background-position: 200% center; }
}

/* Hero 数据条 */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 52px;
  flex-wrap: wrap;
  animation: fadeUp 0.7s ease 0.4s both;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hero-stat strong {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-price);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: textShine 6s linear infinite;
}

.hero-stat span {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* 商品卡片：入场动画 + 悬浮光晕 */
.product-card {
  animation: cardIn 0.55s cubic-bezier(0.2, 0.7, 0.3, 1) both;
}

.product-grid .product-card:nth-child(3n+2) { animation-delay: 0.08s; }
.product-grid .product-card:nth-child(3n) { animation-delay: 0.16s; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(26px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.product-card:hover {
  transform: translateY(-8px) scale(1.015);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--accent-bg), 0 24px 60px -18px var(--accent-glow);
}

.product-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition);
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%),
    color-mix(in srgb, var(--accent) 10%, transparent), transparent 45%);
  pointer-events: none;
}

.product-card:hover::after {
  opacity: 1;
}

/* 主按钮：光泽扫过 */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -80%;
  width: 50%;
  height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.btn-primary:hover::before {
  left: 130%;
}

/* 徽标：呼吸脉冲 */
.badge-sale {
  animation: pulseBadge 2.4s ease-in-out infinite;
}

@keyframes pulseBadge {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

/* 精选卡片：呼吸光圈 */
.product-card.is-featured {
  box-shadow: var(--shadow-md), 0 0 0 2px color-mix(in srgb, var(--accent) 22%, transparent);
}

.product-card.is-featured:hover {
  box-shadow: var(--shadow-lg), 0 0 0 2px var(--accent), 0 24px 60px -18px var(--accent-glow);
}

/* 管理后台外观设置卡片 */
.appearance-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.appearance-card-title {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 8px;
}

.appearance-hint {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.bg-preview {
  height: 220px;
  border-radius: var(--radius-md);
  background-size: cover;
  background-position: center;
  border: 1px solid var(--border);
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.bg-preview .bg-preview-label {
  position: absolute;
  bottom: 10px;
  left: 10px;
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.bg-preview-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  font-size: 14px;
}

.bg-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* 移动端光斑性能优化 */
@media (max-width: 768px) {
  .bg-glow .blob {
    filter: blur(60px);
    animation: none;
  }

  .hero-stats {
    gap: 28px;
  }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  .bg-glow .blob,
  .gradient-text,
  .hero-stat strong,
  .badge-sale,
  .product-card {
    animation: none;
  }
}