/* Sitarashop - 环保清洁产品电商网站样式 */

/* CSS Variables */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #059669;
  --secondary-dark: #047857;
  --accent: #0ea5e9;
  --background: #f0fdf4;
  --surface: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: var(--surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.nav {
  display: flex;
  gap: 30px;
}

.nav a {
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

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

.nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.cart-btn {
  position: relative;
  padding: 10px;
  border-radius: 10px;
  background: var(--background);
  transition: var(--transition);
}

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

.cart-btn svg {
  width: 24px;
  height: 24px;
}

.cart-count {
  position: absolute;
  top: -5px;
  right: -5px;
  background: var(--error);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn {
  display: none;
  padding: 10px;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: 80px 20px;
  color: white;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background: var(--text-primary);
  color: var(--surface);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

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

.btn-accent:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

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

.btn-success:hover {
  background: var(--secondary-dark);
}

.btn-full {
  width: 100%;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

/* Features Banner */
.features-banner {
  background: var(--surface);
  padding: 30px 20px;
  border-bottom: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 15px;
}

.feature-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.feature-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.feature-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Categories Section */
.categories-section {
  padding: 60px 20px;
  background: var(--surface);
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.section-header p {
  color: var(--text-secondary);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.category-card {
  background: var(--background);
  border-radius: var(--radius);
  padding: 25px 20px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}

.category-card:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.category-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.category-name {
  font-weight: 600;
  margin-bottom: 5px;
}

.category-count {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* Featured Products Carousel */
.featured-section {
  padding: 60px 20px;
  background: var(--background);
}

.carousel-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.carousel {
  display: flex;
  overflow: hidden;
  gap: 20px;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s ease;
  gap: 20px;
}

.carousel-slide {
  min-width: calc(50% - 10px);
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.carousel-slide .product-image {
  height: 300px;
  background: linear-gradient(135deg, #e0f2fe, #dcfce7);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide .product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-slide .product-info {
  padding: 25px;
}

.carousel-slide .product-badge {
  display: inline-block;
  background: var(--secondary);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.carousel-slide h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.carousel-slide .product-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 15px;
}

.carousel-slide .product-price span {
  font-size: 1rem;
  color: var(--text-secondary);
  text-decoration: line-through;
  margin-left: 10px;
}

.carousel-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.carousel-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

/* Products Grid */
.products-section {
  padding: 60px 20px;
  background: var(--surface);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  max-width: 1400px;
  margin: 0 auto;
}

.product-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.product-card .product-image {
  position: relative;
  height: 220px;
  background: linear-gradient(135deg, #e0f2fe, #dcfce7);
  overflow: hidden;
}

.product-card .product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.product-badge {
  position: absolute;
  top: 15px;
  left: 15px;
  background: var(--error);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.product-actions {
  position: absolute;
  top: 15px;
  right: 15px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateX(10px);
  transition: var(--transition);
}

.product-card:hover .product-actions {
  opacity: 1;
  transform: translateX(0);
}

.action-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.product-card .product-info {
  padding: 20px;
}

.product-card .product-category {
  font-size: 0.8rem;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 5px;
}

.product-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.4;
}

.product-card .product-rating {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 10px;
}

.stars {
  color: var(--warning);
  font-size: 0.9rem;
}

.rating-count {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.product-card .product-price {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
}

.current-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

.original-price {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: line-through;
}

.add-to-cart-btn {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: white;
  border-radius: 8px;
  font-weight: 600;
  transition: var(--transition);
}

.add-to-cart-btn:hover {
  background: var(--primary-dark);
}

/* Product Detail Page */
.product-detail {
  padding: 40px 20px;
  background: var(--surface);
}

.product-detail-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.product-gallery {
  background: linear-gradient(135deg, #e0f2fe, #dcfce7);
  border-radius: var(--radius);
  overflow: hidden;
}

.main-image {
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.main-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.product-detail-info h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.product-meta .brand {
  color: var(--secondary);
  font-weight: 600;
}

.product-detail-price {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
}

.product-detail-price .current {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}

.product-detail-price .original {
  font-size: 1.2rem;
  color: var(--text-secondary);
  text-decoration: line-through;
}

.product-detail-price .discount {
  background: var(--error);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.product-description {
  margin-bottom: 25px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.product-features {
  margin-bottom: 30px;
}

.product-features h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}

.features-list li::before {
  content: '✓';
  color: var(--secondary);
  font-weight: 700;
}

.size-selector {
  margin-bottom: 25px;
}

.size-selector h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.size-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.size-option {
  padding: 10px 20px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.size-option:hover {
  border-color: var(--primary);
}

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

.quantity-selector {
  margin-bottom: 30px;
}

.quantity-selector h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.quantity-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.qty-btn {
  width: 45px;
  height: 45px;
  border-radius: 8px;
  border: 2px solid var(--border);
  font-size: 1.3rem;
  font-weight: 600;
  transition: var(--transition);
}

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

.qty-value {
  font-size: 1.2rem;
  font-weight: 600;
  width: 50px;
  text-align: center;
}

.product-actions-main {
  display: flex;
  gap: 15px;
  margin-bottom: 30px;
}

.product-actions-main .btn {
  flex: 1;
}

/* Cart Page */
.cart-page {
  padding: 40px 20px;
  min-height: calc(100vh - 200px);
}

.cart-container {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.cart-items {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px;
}

.cart-items h2 {
  font-size: 1.5rem;
  margin-bottom: 25px;
}

.cart-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-image {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, #e0f2fe, #dcfce7);
  border-radius: 10px;
  overflow: hidden;
}

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

.cart-item-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 5px;
}

.cart-item-info .variant {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cart-item-qty button {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-weight: 600;
  transition: var(--transition);
}

.cart-item-qty button:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.cart-item-qty span {
  font-weight: 600;
  min-width: 30px;
  text-align: center;
}

.cart-item-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

.remove-btn {
  color: var(--error);
  font-size: 0.9rem;
}

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

.cart-summary {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px;
  height: fit-content;
  position: sticky;
  top: 100px;
}

.cart-summary h2 {
  font-size: 1.3rem;
  margin-bottom: 25px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
  font-size: 0.95rem;
}

.summary-row.total {
  font-size: 1.2rem;
  font-weight: 700;
  padding-top: 15px;
  border-top: 2px solid var(--border);
  margin-top: 15px;
}

.free-shipping {
  background: linear-gradient(135deg, #dcfce7, #d1fae5);
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
  color: var(--secondary-dark);
  font-weight: 600;
}

.checkout-btn {
  width: 100%;
  margin-top: 20px;
}

.empty-cart {
  text-align: center;
  padding: 60px 20px;
}

.empty-cart-icon {
  font-size: 4rem;
  margin-bottom: 20px;
}

.empty-cart h2 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.empty-cart p {
  color: var(--text-secondary);
  margin-bottom: 25px;
}

/* Checkout Page */
.checkout-page {
  padding: 40px 20px;
  background: var(--background);
}

.checkout-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.checkout-form {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px;
}

.checkout-form h2 {
  font-size: 1.3rem;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border);
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid var(--border);
  border-radius: 8px;
  transition: var(--transition);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.payment-methods {
  margin-top: 30px;
}

.payment-methods h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.payment-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.payment-option {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}

.payment-option:hover {
  border-color: var(--primary);
}

.payment-option.selected {
  border-color: var(--primary);
  background: linear-gradient(135deg, #eff6ff, #f0fdf4);
}

.payment-option input {
  display: none;
}

.payment-radio {
  width: 22px;
  height: 22px;
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.payment-option.selected .payment-radio {
  border-color: var(--primary);
}

.payment-option.selected .payment-radio::after {
  content: '';
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
}

.payment-icon {
  font-size: 2rem;
}

.payment-info h4 {
  font-weight: 600;
  margin-bottom: 3px;
}

.payment-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.order-summary {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px;
  height: fit-content;
  position: sticky;
  top: 100px;
}

.order-summary h2 {
  font-size: 1.3rem;
  margin-bottom: 25px;
}

.order-items {
  margin-bottom: 20px;
}

.order-item {
  display: flex;
  gap: 15px;
  padding: 15px 0;
  border-bottom: 1px solid var(--border);
}

.order-item-image {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #e0f2fe, #dcfce7);
  border-radius: 8px;
  overflow: hidden;
}

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

.order-item-info {
  flex: 1;
}

.order-item-info h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 5px;
}

.order-item-info p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.order-item-price {
  font-weight: 600;
  color: var(--primary);
}

.place-order-btn {
  width: 100%;
  margin-top: 25px;
  padding: 16px;
  font-size: 1.1rem;
}

/* Policy Pages */
.policy-page {
  padding: 60px 20px;
  background: var(--surface);
  min-height: calc(100vh - 200px);
}

.policy-container {
  max-width: 800px;
  margin: 0 auto;
}

.policy-container h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary);
}

.policy-meta {
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.policy-container h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 30px 0 15px;
  color: var(--text-primary);
}

.policy-container p {
  margin-bottom: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.policy-container ul {
  margin: 15px 0 20px 20px;
}

.policy-container li {
  margin-bottom: 10px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: 60px 20px 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 15px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.footer-column h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-column ul li {
  margin-bottom: 12px;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-column a:hover {
  color: white;
}

.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary);
}

/* Breadcrumb */
.breadcrumb {
  padding: 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.breadcrumb-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
}

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

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

.breadcrumb span {
  color: var(--text-secondary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--text-primary);
  color: white;
  padding: 15px 25px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
  z-index: 9999;
}

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

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

/* Products Page */
.products-page {
  padding: 40px 20px;
}

.products-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  max-width: 1400px;
  margin: 0 auto 30px;
}

.products-header h1 {
  font-size: 2rem;
}

.filter-bar {
  display: flex;
  gap: 15px;
}

.filter-select {
  padding: 10px 20px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-weight: 500;
  cursor: pointer;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .product-detail-container {
    gap: 40px;
  }
  
  .cart-container,
  .checkout-container {
    grid-template-columns: 1fr;
  }
  
  .cart-summary,
  .order-summary {
    position: static;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
  }
  
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 15px;
    padding: 20px 0;
  }
  
  .nav.active {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .carousel-slide {
    min-width: 100%;
  }
  
  .product-detail-container {
    grid-template-columns: 1fr;
  }
  
  .main-image {
    height: 350px;
  }
  
  .features-list {
    grid-template-columns: 1fr;
  }
  
  .cart-item {
    grid-template-columns: 80px 1fr;
  }
  
  .cart-item-controls {
    grid-column: span 2;
    justify-content: space-between;
    margin-top: 10px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-brand {
    max-width: 100%;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .products-header {
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 50px 15px;
  }
  
  .hero h1 {
    font-size: 1.6rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .product-actions-main {
    flex-direction: column;
  }
  
  .product-actions-main .btn {
    width: 100%;
  }
  
  .payment-option {
    padding: 15px;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* Placeholder Image */
.placeholder-img {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e0f2fe, #dcfce7);
  color: var(--primary);
  font-size: 3rem;
}