/* Reset and Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #8b5cf6;
  --color-primary-dark: #7c3aed;
  --color-secondary: #6b7280;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #f9fafb;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

main.container {
  padding-top: 2rem;
}

/* Header */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
}

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

.dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
  font-weight: 500;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  padding: 0.5rem 0;
  z-index: 50;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-text);
}

.dropdown-menu a:hover {
  background: var(--color-bg);
}

.search-form {
  display: flex;
  gap: 0.5rem;
}

.search-form input {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  width: 200px;
}

.search-form button {
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

.search-form button:hover {
  background: var(--color-primary-dark);
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: var(--color-white);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--color-border);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
  text-align: center;
  color: var(--color-text-light);
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  border-radius: var(--radius);
  margin: 2rem 0;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s;
}

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

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

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

.btn-secondary:hover {
  background: #4b5563;
  color: white;
}

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

.btn-danger:hover {
  background: #dc2626;
  color: white;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.product-image-wrapper {
  position: relative;
}

.edit-overlay {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  padding: 0.25rem 0.5rem;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  opacity: 0.5;
  transition: opacity 0.2s;
  z-index: 1;
  text-decoration: none;
}

.edit-overlay:hover {
  opacity: 1;
  background: var(--color-primary);
}

.product-image {
  position: relative;
  display: block;
  line-height: 0;
}

.product-image img,
.product-image .placeholder-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.placeholder-image {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.placeholder-image.large {
  height: 400px;
}

.product-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 0.75rem 0.75rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 0.5rem;
}

.product-overlay-name {
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
}

.product-overlay-price {
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  white-space: nowrap;
}

.out-of-stock {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--color-warning);
  color: white;
  font-size: 0.75rem;
  border-radius: 4px;
  margin-top: 0.5rem;
}

/* Categories */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.category-card {
  display: block;
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
  transition: all 0.2s;
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}

.category-card h3 {
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.category-card p {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* Sections */
.featured-section,
.categories-section,
.related-products {
  margin: 3rem 0;
}

.featured-section h2,
.categories-section h2,
.related-products h2 {
  margin-bottom: 1.5rem;
}

.section-footer {
  margin-top: 2rem;
  text-align: center;
}

/* Catalog Layout */
.catalog-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.catalog-sidebar h3 {
  margin-bottom: 1rem;
}

.category-list {
  list-style: none;
}

.category-list li {
  margin-bottom: 0.5rem;
}

.category-list a {
  display: block;
  padding: 0.5rem;
  color: var(--color-text);
  border-radius: 4px;
}

.category-list a:hover,
.category-list a.active {
  background: var(--color-primary);
  color: white;
}

/* Page Header */
.page-header {
  margin: 2rem 0;
}

.page-header h1 {
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--color-text-light);
}

/* Breadcrumb */
.breadcrumb {
  padding: 1rem 0;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.breadcrumb a {
  color: var(--color-text-light);
}

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

/* Product Detail */
.product-detail-full {
  margin: 2rem 0;
}

.main-image-full {
  margin-bottom: 1rem;
}

.main-image-full img {
  width: 100%;
  border-radius: var(--radius);
}

.thumbnail-list {
  display: flex;
  gap: 0.5rem;
}

.thumbnail {
  width: 200px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  border: 2px solid transparent;
}

.thumbnail.active,
.thumbnail:hover {
  border-color: var(--color-primary);
}

.product-info-detail h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.product-category-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-bg);
  border-radius: 999px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.product-category-badge a {
  color: var(--color-text);
}

.product-price-large {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.in-stock-notice {
  color: var(--color-success);
  font-weight: 500;
}

.out-of-stock-notice {
  color: var(--color-danger);
  font-weight: 500;
}

.product-description {
  margin-top: 2rem;
}

.product-description h3 {
  margin-bottom: 0.5rem;
}

/* Empty State */
.empty-state,
.empty-message {
  text-align: center;
  padding: 3rem;
  color: var(--color-text-light);
}

/* Error Page */
.error-page {
  text-align: center;
  padding: 4rem 2rem;
}

.error-page h1 {
  font-size: 6rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.error-page p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 1rem;
  }

  .catalog-layout {
    grid-template-columns: 1fr;
  }

  .catalog-sidebar {
    order: 2;
  }


  .hero h1 {
    font-size: 1.75rem;
  }
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  overflow-y: auto;
  padding: 2rem;
}

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

.modal-content {
  background: var(--color-white);
  border-radius: var(--radius);
  width: 100%;
  max-width: 600px;
  position: relative;
  margin-top: 2rem;
}

.modal-close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 2rem;
  height: 2rem;
  border: none;
  background: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-light);
  z-index: 1;
}

.modal-close:hover {
  color: var(--color-text);
}

#modal-body {
  padding: 1.5rem;
}

#modal-body h1 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

#modal-body .form-group {
  margin-bottom: 1rem;
}

#modal-body .form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
  font-size: 0.875rem;
}

#modal-body .form-group input[type="text"],
#modal-body .form-group input[type="number"],
#modal-body .form-group textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.875rem;
}

#modal-body .form-group input:focus,
#modal-body .form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

#modal-body .checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

#modal-body .image-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

#modal-body .image-preview-item {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

#modal-body .image-preview-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

#modal-body .image-preview-item .main-badge {
  position: absolute;
  top: 0.25rem;
  left: 0.25rem;
  background: var(--color-primary);
  color: white;
  font-size: 0.6rem;
  padding: 0.1rem 0.25rem;
  border-radius: 3px;
}

#modal-body .image-preview-item .image-actions {
  position: absolute;
  bottom: 0.25rem;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 0.25rem;
}

#modal-body .image-preview-item .image-actions .btn {
  font-size: 0.6rem;
  padding: 0.15rem 0.3rem;
}

#modal-body .form-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.5rem;
}

#modal-body .alert-error {
  background: #fee2e2;
  color: #991b1b;
  padding: 0.75rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.875rem;
}