:root {
  --primary: #F26522;
  --primary-light: #FFF0E6;
  --dark: #111827;
  --gray-700: #374151;
  --gray-500: #6B7280;
  --gray-300: #E5E7EB;
  --gray-200: #E5E7EB;
  --gray-100: #F3F4F6;
  --gray-50: #F9FAFB;
  --white: #FFFFFF;
  --danger: #EF4444;
  --success: #10B981;
  --warning: #F59E0B;
  --sidebar-width: 220px;
  --header-height: 60px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  color: var(--gray-700);
  background: var(--gray-100);
}

/* Login */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--dark) 0%, var(--gray-700) 100%);
}

.login-box {
  width: 420px;
  background: var(--white);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.login-box h1 {
  font-size: 24px;
  color: var(--dark);
  margin-bottom: 8px;
}

.login-box .subtitle {
  color: var(--gray-500);
  margin-bottom: 32px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--gray-700);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}

.btn-primary:hover { background: #E05A1C; }

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-secondary:hover { background: var(--gray-50); }

.btn-warning {
  background: #F59E0B;
  color: var(--white);
}

.btn-warning:hover { background: #D97706; }

.btn-success {
  background: #10B981;
  color: var(--white);
}

.btn-success:hover { background: #059669; }

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

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

/* Layout */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--dark);
  color: var(--white);
  position: fixed;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.logo {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 20px;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo span {
  color: var(--primary);
  margin-right: 8px;
}

.nav-menu {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
}

.nav-item {
  padding: 12px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.7);
  transition: all 0.2s;
}

.nav-item:hover {
  background: rgba(255,255,255,0.05);
  color: var(--white);
}

.nav-item.active {
  background: var(--primary);
  color: var(--white);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  height: var(--header-height);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid var(--gray-300);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
}

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

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-500);
}

.page-content {
  padding: 24px;
  flex: 1;
}

.main-footer {
  padding: 16px 24px;
  text-align: center;
  font-size: 12px;
  color: var(--gray-500);
  background: var(--white);
  border-top: 1px solid var(--gray-200);
}

.main-footer a {
  color: var(--gray-500);
  text-decoration: none;
}

.main-footer a:hover {
  color: var(--primary);
}

.login-footer {
  margin-top: 20px;
  text-align: center;
  font-size: 12px;
  color: var(--gray-500);
}

.login-footer a {
  color: var(--gray-500);
  text-decoration: none;
}

.login-footer a:hover {
  color: var(--primary);
}

/* Cards */
.card {
  background: var(--white);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 16px;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--white);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.stat-label {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--dark);
}

.stat-value.primary { color: var(--primary); }

/* Tables */
.table-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
}

.filter-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-row .form-control {
  width: auto;
  min-width: 140px;
}

.wx-status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 12px;
  margin-bottom: 16px;
  background: var(--gray-50, #F9FAFB);
  border: 1px solid var(--gray-100, #F3F4F6);
  border-radius: 8px;
}

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

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
}

.data-table th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-700);
  font-size: 13px;
}

.data-table tr:hover {
  background: var(--gray-50);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: #D1FAE5; color: #065F46; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-danger { background: #FEE2E2; color: #991B1B; }
.badge-gray { background: var(--gray-100); color: var(--gray-500); }

.hot-product-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.hot-product-tag img {
  flex-shrink: 0;
}

.hot-product-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-left: 4px;
  background: rgba(242, 101, 34, 0.15);
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

.hot-product-remove:hover {
  background: rgba(242, 101, 34, 0.3);
}

.hot-product-option:hover {
  background: var(--gray-50);
}

.hot-product-option input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}

.pagination button {
  padding: 6px 12px;
  border: 1px solid var(--gray-300);
  background: var(--white);
  border-radius: 6px;
  cursor: pointer;
}

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

.pagination .active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--white);
  border-radius: 12px;
  width: 90%;
  max-width: 640px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal.modal-lg {
  max-width: 900px;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

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

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.tag-input {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--gray-300);
  border-radius: 8px;
}

.tag-input input {
  border: none;
  outline: none;
  flex: 1;
  min-width: 80px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 12px;
}

.tag .remove {
  cursor: pointer;
}

/* Dashboard charts */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.chart-placeholder {
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-50);
  border-radius: 8px;
  color: var(--gray-500);
}

.trend-bar {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 200px;
  padding: 16px 0;
}

.trend-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.trend-bar-fill {
  width: 100%;
  background: var(--primary);
  border-radius: 4px 4px 0 0;
  min-height: 4px;
  opacity: 0.85;
}

.trend-label {
  font-size: 12px;
  color: var(--gray-500);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-500);
}

.loading {
  text-align: center;
  padding: 40px;
  color: var(--gray-500);
}

/* Toast */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 8px;
  color: var(--white);
  z-index: 200;
  animation: slideIn 0.3s ease;
}

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

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

/* Category thumb in admin */
.category-thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--gray-200);
}

.category-thumb-placeholder {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 18px;
}

.image-upload-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.image-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.image-upload-wrap .hidden {
  display: none !important;
}

.image-preview {
  width: 96px;
  height: 96px;
  border: 2px dashed var(--gray-300);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--gray-50);
  cursor: pointer;
}

.image-preview:hover {
  border-color: var(--primary);
}

.upload-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.upload-placeholder {
  font-size: 12px;
  color: var(--gray-500);
  text-align: center;
  padding: 8px;
}

/* Multi image upload in product form */
.multi-image-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.multi-image-item .image-preview {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
}

.multi-image-item .image-actions {
  flex-direction: row;
  gap: 6px;
}

/* SKU editor */
.sku-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sku-empty {
  font-size: 13px;
  color: var(--gray-500);
  padding: 12px 0;
}

.sku-row {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 12px;
}

.sku-row-inner {
  align-items: flex-end;
  margin-bottom: 0;
}

.sku-row-inner .form-group {
  margin-bottom: 0;
}

.sku-row-inner .sku-remove {
  margin-bottom: 6px;
  height: 36px;
}

.sku-image-upload {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sku-image-upload .image-preview {
  width: 64px;
  height: 64px;
}

.sku-image-upload .upload-placeholder {
  font-size: 11px;
}

.sku-image-upload .image-actions {
  flex-direction: column;
  gap: 6px;
}

.header-actions .btn {
  margin-left: 8px;
}

/* 商品详情图多图上传 */
.detail-upload-wrap {
  flex-direction: column;
  align-items: flex-start;
  padding: 16px;
  border: 1px dashed var(--gray-300);
  border-radius: 8px;
  background: var(--gray-50);
}

.detail-images-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  width: 100%;
  min-height: 64px;
}

.detail-image-item {
  position: relative;
  width: 96px;
  height: 96px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  background: var(--white);
}

.detail-image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-image-item .detail-image-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 14px;
  line-height: 1;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.detail-image-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.detail-image-actions .upload-hint {
  font-size: 12px;
  color: var(--gray-500);
}

/* ===== 规格项编辑（每个规格值带价格/图片/库存） ===== */
.spec-group-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.spec-group {
  border: 1px solid var(--gray-300);
  border-radius: 12px;
  padding: 16px;
  background: var(--white);
}

.spec-group-header {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.spec-group-header .spec-group-name {
  flex: 1;
  font-weight: 500;
}

/* 规格值改为卡片式编辑，已移除逗号分隔输入框 + 生成按钮 */

.spec-values-editor {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sv-row {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  background: var(--gray-50);
  transition: background .15s;
}

.sv-row:hover {
  background: var(--white);
}

.sv-name-input {
  flex: 1;
  padding: 6px 8px;
  font-size: 14px;
  color: var(--dark);
}

.sv-row .btn-danger {
  flex: 0 0 auto;
}

/* 价格/库存/图片 独立卡片（与规格设置并列） */
.spec-base-card {
  border: 1px solid var(--gray-300);
  border-radius: 12px;
  padding: 16px;
  background: var(--gray-50);
}

.spec-base-card > label {
  display: block;
  font-weight: 600;
  margin-bottom: 12px;
}

.spec-base-row {
  display: flex;
  gap: 12px;
}

.sv-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sv-field label {
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 500;
}

.sv-field input {
  width: 110px;
  padding: 6px 8px;
  font-size: 14px;
}

.sv-img-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.sv-img-wrap .sv-img-preview {
  width: 60px;
  height: 60px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--gray-300);
  background: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sv-img-wrap .sv-img-preview .upload-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 无图时仅显示「+ 图片」入口，图片预览区不可见 */
.sv-img-add {
  width: 60px;
  height: 60px;
  border-radius: 6px;
  border: 1px dashed var(--gray-300);
  background: var(--gray-50);
  color: var(--gray-500);
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .15s;
}

.sv-img-add:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.sv-img-actions {
  display: flex;
  gap: 8px;
}

.link-btn {
  background: none;
  border: none;
  padding: 0;
  font-size: 12px;
  color: var(--primary);
  cursor: pointer;
  line-height: 1;
}

.link-btn:hover {
  text-decoration: underline;
}

.link-btn.danger {
  color: var(--danger);
}

.sv-row-head .btn-danger {
  flex: 0 0 auto;
}

/* 必填标记 */
.req {
  color: var(--danger);
  font-weight: 700;
  margin-left: 2px;
}

/* 扁平多 SKU 编辑行 */
#skuList {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 10px;
}
.sku-row {
  border: 1px solid var(--gray-300);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--gray-50);
  display: flex;
  align-items: flex-end;
  gap: 4px;
}
.sku-row.dragging {
  opacity: 0.5;
  border-style: dashed;
  border-color: var(--primary);
}
.sku-drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 38px;
  margin-right: 4px;
  color: var(--gray-500);
  font-size: 18px;
  line-height: 1;
  cursor: grab;
  user-select: none;
  flex-shrink: 0;
  align-self: flex-end;
}
.sku-drag-handle:active {
  cursor: grabbing;
}
.sku-row-fields {
  flex: 1;
}
.sku-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  margin-bottom: 10px;
  background: var(--primary-light, #fff0e6);
  border: 1px solid #ffd9bf;
  border-radius: 8px;
}
.sku-batch-stock {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.sku-toolbar-hint {
  font-size: 12px;
  color: var(--gray-500);
}
.sku-sort-btns {
  display: flex;
  align-items: center;
  gap: 6px;
}
.sku-toolbar-label {
  font-size: 13px;
  color: var(--gray-700);
  font-weight: 500;
}
.alert {
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.6;
}
.alert-success {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #047857;
}
.alert-warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #b45309;
}
.sku-row-fields {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}
.sku-row-fields .form-control {
  width: 150px;
}
.sku-row-fields .form-control[name="sku_name"] {
  width: 200px;
}
.sku-image-wrap {
  width: 80px;
  margin-top: 0;
  flex-shrink: 0;
}
.sku-image-preview {
  position: relative;
  width: 80px;
  height: 80px;
  border: 1px dashed #c7c7cc;
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  background: #fafafa;
  transition: border-color 0.2s, background 0.2s;
}
.sku-image-preview:hover {
  border-color: #007aff;
  background: #f0f7ff;
}
.sku-image-preview .upload-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}
.sku-image-preview .upload-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c7c7cc;
  font-size: 0;
}
.sku-image-preview .upload-placeholder .sku-upload-icon {
  font-size: 28px;
  font-weight: 300;
  font-style: normal;
  line-height: 1;
  color: #c7c7cc;
  pointer-events: none;
}
.sku-image-preview:hover .upload-placeholder .sku-upload-icon {
  color: #007aff;
}
.sku-image-delete {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 59, 48, 0.9);
  color: #fff;
  font-size: 16px;
  line-height: 22px;
  text-align: center;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: background 0.2s;
}
.sku-image-delete:hover {
  background: rgba(255, 59, 48, 1);
}

@media (max-width: 768px) {
  .sv-row-body {
    gap: 10px;
  }
  .sv-row-head .btn-danger {
    width: auto;
  }
  .sku-row-fields .form-control {
    width: 100%;
  }
}

/* 隐藏数字输入框原生的上下步进器（避免误触/滚轮把价格按 step 误改） */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}