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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: #f5f7fa;
  color: #2c3e50;
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.logo h1 {
  font-size: 22px;
  font-weight: 600;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary {
  background: rgba(255,255,255,0.2);
  color: white;
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-1px);
}

.btn-primary {
  background: #667eea;
  color: white;
}

.btn-primary:hover {
  background: #5a67d8;
  transform: translateY(-1px);
}

.main {
  padding: 32px 0;
}

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.stat-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.stat-icon.blue { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.stat-icon.green { background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%); }
.stat-icon.purple { background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%); }
.stat-icon.orange { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }

.stat-label {
  font-size: 14px;
  color: #718096;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: #2d3748;
}

.controls-section {
  background: white;
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #f7fafc;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  padding: 12px 16px;
  transition: border-color 0.2s ease;
}

.search-bar:focus-within {
  border-color: #667eea;
  background: white;
}

.search-bar svg {
  color: #a0aec0;
}

.search-bar input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 15px;
  outline: none;
  color: #2d3748;
}

.search-bar input::placeholder {
  color: #a0aec0;
}

.filter-controls {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 180px;
}

.filter-group label {
  font-size: 13px;
  font-weight: 500;
  color: #4a5568;
}

.filter-group select {
  padding: 10px 12px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  background: white;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s ease;
}

.filter-group select:focus {
  border-color: #667eea;
}

.products-section {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.products-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #edf2f7;
  gap: 16px;
}

.products-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.products-header h2 {
  font-size: 20px;
  font-weight: 600;
  color: #2d3748;
}

.products-count {
  font-size: 14px;
  color: #718096;
  background: #edf2f7;
  padding: 6px 14px;
  border-radius: 20px;
}

.batch-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.selected-count {
  font-size: 14px;
  color: #4a5568;
}

.selected-count strong {
  color: #667eea;
  font-weight: 600;
}

.btn-danger {
  background: #e53e3e;
  color: white;
}

.btn-danger:hover {
  background: #c53030;
  transform: translateY(-1px);
}

.btn-success {
  background: #38a169;
  color: white;
}

.btn-success:hover {
  background: #2f855a;
  transform: translateY(-1px);
}

.select-all-checkbox {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.select-all-checkbox input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkbox-custom {
  width: 20px;
  height: 20px;
  border: 2px solid #cbd5e0;
  border-radius: 5px;
  background: white;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.select-all-checkbox:hover .checkbox-custom {
  border-color: #667eea;
}

.select-all-checkbox input:checked ~ .checkbox-custom {
  background: #667eea;
  border-color: #667eea;
}

.select-all-checkbox input:checked ~ .checkbox-custom::after {
  content: '';
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  min-height: 400px;
}

.product-card {
  background: white;
  border: 1px solid #edf2f7;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.product-card.selected {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  border-color: #e2e8f0;
}

.product-card.selected:hover {
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.product-checkbox {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 10;
  cursor: pointer;
}

.product-checkbox input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.product-checkbox .checkbox-custom {
  width: 22px;
  height: 22px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(4px);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.product-checkbox:hover .checkbox-custom {
  border-color: #667eea;
  background: rgba(255, 255, 255, 0.6);
}

.product-checkbox input:checked ~ .checkbox-custom {
  background: #667eea;
  border-color: #667eea;
}

.product-checkbox input:checked ~ .checkbox-custom::after {
  content: '';
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.product-status-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
  backdrop-filter: blur(4px);
}

.product-status-badge.active {
  background: rgba(56, 161, 105, 0.9);
  color: white;
}

.product-status-badge.archived {
  background: rgba(229, 62, 62, 0.9);
  color: white;
}

.product-image {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: #f7fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.product-image-placeholder {
  color: #cbd5e0;
}

.product-info {
  padding: 16px;
}

.product-title {
  font-size: 15px;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 42px;
}

.product-type {
  display: inline-block;
  font-size: 12px;
  color: #667eea;
  background: #ebf4ff;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.product-vendor {
  font-size: 13px;
  color: #718096;
}

.product-variants {
  font-size: 12px;
  color: #a0aec0;
}

.product-price {
  font-size: 18px;
  font-weight: 700;
  color: #e53e3e;
}

.product-price.currency {
  font-size: 14px;
  font-weight: 500;
  margin-right: 2px;
}

.loading {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: #718096;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #e2e8f0;
  border-top-color: #667eea;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

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

.no-products {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: #718096;
}

.no-products svg {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  color: #cbd5e0;
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #edf2f7;
}

.page-btn {
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border: 2px solid #e2e8f0;
  background: white;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: #4a5568;
  cursor: pointer;
  transition: all 0.2s ease;
}

.page-btn:hover:not(:disabled) {
  border-color: #667eea;
  color: #667eea;
}

.page-btn.active {
  background: #667eea;
  border-color: #667eea;
  color: white;
}

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

.page-info {
  font-size: 14px;
  color: #718096;
  margin: 0 12px;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  z-index: 1000;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: white;
  border-radius: 16px;
  max-width: 900px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(0,0,0,0.05);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #718096;
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close:hover {
  background: rgba(0,0,0,0.1);
  color: #2d3748;
}

.modal-body {
  padding: 32px;
}

.detail-header {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 32px;
  margin-bottom: 32px;
}

.detail-image {
  width: 100%;
  aspect-ratio: 1;
  background: #f7fafc;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.detail-title {
  font-size: 28px;
  font-weight: 700;
  color: #2d3748;
  margin-bottom: 12px;
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.detail-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 20px;
  background: #edf2f7;
  color: #4a5568;
}

.detail-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.detail-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-info-label {
  font-size: 13px;
  color: #718096;
}

.detail-info-value {
  font-size: 15px;
  font-weight: 600;
  color: #2d3748;
}

.detail-price {
  font-size: 32px;
  font-weight: 700;
  color: #e53e3e;
  margin-bottom: 20px;
}

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

.detail-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #edf2f7;
}

.detail-description {
  color: #4a5568;
  line-height: 1.7;
}

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

.variants-table th {
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: #718096;
  padding: 12px 16px;
  background: #f7fafc;
  border-bottom: 2px solid #e2e8f0;
}

.variants-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #edf2f7;
  font-size: 14px;
  color: #4a5568;
}

.variants-table tr:hover td {
  background: #f7fafc;
}

.variant-price {
  font-weight: 600;
  color: #e53e3e;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.gallery-item {
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid #edf2f7;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.gallery-item:hover {
  border-color: #667eea;
}

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

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 20px;
  border-radius: 10px;
  background: #2d3748;
  color: white;
  font-size: 14px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 2000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  background: #38a169;
}

.toast.error {
  background: #e53e3e;
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .filter-controls {
    flex-direction: column;
  }
  
  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }
  
  .product-image {
    height: 150px;
  }
  
  .detail-header {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    width: 95%;
    max-height: 95vh;
  }
  
  .modal-body {
    padding: 20px;
  }
}