/* Overlay */
        .cart-modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
            z-index: 999;
            backdrop-filter: blur(2px);
        }

        /* Right Side Modal */
        .cart-modal {
            position: fixed;
            top: 0;
            right: -450px;
            width: 420px;
            height: 100vh;
            background: #fff;
            box-shadow: -4px 0 20px rgba(0,0,0,0.15);
            transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            z-index: 1000;
            overflow-y: auto;
            padding-bottom: 40px;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            display: flex;
            flex-direction: column;
        }

        /* Modal Header */
        .cart-modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 18px;
            border-bottom: 1px solid #f0f0f0;
            font-weight: 600;
            background-color: #fff;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .close-cart {
            border: none;
            background: none;
            font-size: 28px;
            cursor: pointer;
            color: #666;
            transition: color 0.2s ease;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .close-cart:hover {
            color: #000;
            background-color: #f5f5f5;
        }

        .cart-shipping-bar {
            background: linear-gradient(90deg, #4a4a4a, #2c2c2c);
            color: #fff;
            padding: 12px;
            text-align: center;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        /* Cart Item */
        .cart-item {
            padding: 20px 24px;
            display: flex;
            gap: 16px;
            border-bottom: 1px solid #f5f5f5;
            transition: background-color 0.2s ease;
        }

        .cart-item:hover {
            background-color: #fafafa;
        }

        .cart-item-img {
            width: 80px;
            height: 100px;
            object-fit: cover;
            border-radius: 6px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

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

        .cart-item-info h4 {
            font-size: 15px;
            margin: 0 0 6px 0;
            font-weight: 600;
            line-height: 1.4;
        }

        .cart-item-info p {
            margin: 0 0 12px 0;
            font-size: 13px;
            color: #666;
        }

        .qty-box {
            margin: 12px 0;
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .qty-box button {
            width: 30px;
            height: 30px;
            border: 1px solid #ddd;
            background: #fff;
            cursor: pointer;
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: all 0.2s ease;
        }

        .qty-box button:hover {
            background-color: #f5f5f5;
            border-color: #bbb;
        }

        .qty-box span {
            min-width: 30px;
            text-align: center;
            font-weight: 500;
        }

        .price-box {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-box .sale-price {
            font-weight: 600;
            font-size: 16px;
            color: #000;
        }

        .price-box .old-price {
            text-decoration: line-through;
            color: #888;
            font-size: 14px;
        }

        .discount-badge {
            background-color: #e74c3c;
            color: white;
            font-size: 11px;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 600;
        }

        .remove-item {
            align-self: flex-start;
            border: none;
            background: none;
            cursor: pointer;
            color: #999;
            font-size: 13px;
            transition: color 0.2s ease;
            padding: 4px 0;
        }

        .remove-item:hover {
            color: #e74c3c;
        }

        /* Add-ons */
        .addon-section {
            margin-top: 16px;
            padding: 0 24px;
        }

        .addon-title {
            text-align: center;
            margin: 20px 0 16px 0;
            font-size: 16px;
            font-weight: 600;
            color: #333;
            position: relative;
        }

        .addon-title:before, .addon-title:after {
            content: "";
            position: absolute;
            top: 50%;
            width: 30%;
            height: 1px;
            background-color: #eee;
        }

        .addon-title:before {
            left: 0;
        }

        .addon-title:after {
            right: 0;
        }

        .addon-items {
            display: flex;
            gap: 16px;
            padding: 0;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: #ddd transparent;
        }

        .addon-items::-webkit-scrollbar {
            height: 4px;
        }

        .addon-items::-webkit-scrollbar-thumb {
            background-color: #ddd;
            border-radius: 2px;
        }

        .addon-box {
            min-width: 140px;
            text-align: center;
            border: 1px solid #eee;
            border-radius: 8px;
            padding: 12px;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .addon-box:hover {
            border-color: #ccc;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }

        .addon-box.selected {
            border-color: #000;
            background-color: #f9f9f9;
        }

        .addon-img {
            width: 80px;
            height: 80px;
            object-fit: cover;
            border-radius: 4px;
            margin: 0 auto 8px;
        }

        .addon-name {
            font-size: 13px;
            margin: 0 0 6px 0;
            font-weight: 500;
            line-height: 1.3;
        }

        .addon-price {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
        }

        .addon-price .sale-price {
            font-weight: 600;
            font-size: 14px;
        }

        .addon-price .old-price {
            text-decoration: line-through;
            color: #aaa;
            font-size: 12px;
        }

        /* Footer Summary */
        .cart-summary {
            display: flex;
            justify-content: space-between;
            padding: 20px 24px;
            border-top: 1px solid #f0f0f0;
            font-size: 16px;
            background-color: #fff;
            position: sticky;
            bottom: 0;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
        }

        .cart-summary p {
            margin: 0;
            font-weight: 500;
        }

        .cart-summary div {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Checkout Button */
        .checkout-btn {
            width: calc(100% - 48px);
            margin: 0 24px 20px;
            background: #000;
            color: #fff;
            padding: 14px;
            border: none;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 6px;
            transition: all 0.2s ease;
            letter-spacing: 0.5px;
        }

        .checkout-btn:hover {
            background: #333;
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }

        .checkout-btn:active {
            transform: translateY(0);
        }

        /* Continue Shopping */
        .continue-shopping {
            text-align: center;
            margin: 0 24px 20px;
            color: #666;
            font-size: 14px;
            cursor: pointer;
            text-decoration: underline;
            transition: color 0.2s ease;
        }

        .continue-shopping:hover {
            color: #000;
        }

        /* Demo Button */
        .demo-btn {
            margin: 50px;
            padding: 12px 25px;
            background: #000;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 500;
            transition: background 0.2s ease;
        }

        .demo-btn:hover {
            background: #333;
        }

        /* Empty State */
        .empty-cart {
            text-align: center;
            padding: 40px 24px;
            color: #666;
        }

        .empty-cart-icon {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.5;
        }

        /* Animation for add/remove items */
        @keyframes slideIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .cart-item {
            animation: slideIn 0.3s ease;
        }

        /* Responsive adjustments */
        @media (max-width: 480px) {
            .cart-modal {
                width: 100%;
                right: -100%;
            }
        }