* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  /* Header */
  .header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  .header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
  }
  
  .logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2563eb;
  }
  
  .cart-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.2s;
  }
  
  .cart-btn:hover {
    background: #1d4ed8;
  }
  
  /* Main */
  .main {
    padding: 2rem 0;
  }
  
  .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
  }
  
  /* Product Card */
  .product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
  }
  
  .product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  }
  
  .product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #f1f5f9;
  }
  
  .product-info {
    padding: 1.5rem;
  }
  
  .product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
  }
  
  .product-description {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
  }
  
  .product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: #059669;
  }
  
  .add-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.2s;
  }
  
  .add-btn:hover {
    background: #059669;
  }
  
  /* Cart Sidebar */
  .cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    transition: right 0.3s ease;
    z-index: 1000;
    display: flex;
    flex-direction: column;
  }
  
  .cart-sidebar.open {
    right: 0;
  }
  
  .cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
  }
  
  .cart-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
  }
  
  .close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #64748b;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
  }
  
  .close-btn:hover {
    background: #f1f5f9;
  }
  
  .cart-items {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
  }
  
  .empty-cart {
    text-align: center;
    color: #64748b;
    margin-top: 2rem;
  }
  
  .cart-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #f1f5f9;
  }
  
  .cart-item:last-child {
    border-bottom: none;
  }
  
  .cart-item-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    background: #f1f5f9;
  }
  
  .cart-item-info {
    flex: 1;
  }
  
  .cart-item-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
  }
  
  .cart-item-price {
    color: #059669;
    font-weight: 600;
  }
  
  .quantity-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
  }
  
  .quantity-btn {
    background: #f1f5f9;
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
  }
  
  .quantity-btn:hover {
    background: #e2e8f0;
  }
  
  .quantity {
    min-width: 30px;
    text-align: center;
    font-weight: 500;
  }
  
  .cart-footer {
    padding: 1.5rem;
    border-top: 1px solid #e2e8f0;
  }
  
  .cart-total {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
  }
  
  .checkout-btn {
    width: 100%;
    background: #2563eb;
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color 0.2s;
  }
  
  .checkout-btn:hover {
    background: #1d4ed8;
  }
  
  /* Overlay */
  .overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }
  
  .overlay.active {
    opacity: 1;
    visibility: visible;
  }
  
  /* Responsive */
  @media (max-width: 768px) {
    .cart-sidebar {
      width: 100%;
      right: -100%;
    }
  
    .products-grid {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 1rem;
    }
  
    .container {
      padding: 0 15px;
    }
  }