@keyframes slideInRight {
            from { transform: translateX(100%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        
        @keyframes slideOutRight {
            from { transform: translateX(0); opacity: 1; }
            to { transform: translateX(100%); opacity: 0; }
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        @keyframes scaleIn {
            from { transform: scale(0.8); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }
        
        .cart-notification {
            font-family: 'Poppins', sans-serif;
            font-weight: 500;
            line-height: 1.4;
            cursor: pointer;
            transition: transform 0.2s ease;
        }
        
        .cart-notification:hover {
            transform: translateY(-2px);
        }
        
        .empty-cart {
            padding: 40px 20px;
        }
        
        .empty-cart h4 {
            color: #666;
            margin-bottom: 10px;
        }
        
        .empty-cart p {
            color: #999;
            margin-bottom: 20px;
        }
        
        .loading-cart {
            padding: 40px 20px;
        }
        
        /* Address Form Validation Styles */
        .form-control.validation-error {
            border-color: #dc3545 !important;
            box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
        }
        
        .form-control.validation-success {
            border-color: #28a745 !important;
            box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25) !important;
        }
        
        .field-error-message {
            color: #dc3545 !important;
            font-size: 12px !important;
            margin-top: 5px !important;
            display: block !important;
            width: 100% !important;
        }
        
        /* Number formatting styles */
        .currency-amount {
            font-weight: 500;
            color: #333;
        }
        
        .stock-info.text-success {
            color: #28a745 !important;
        }
        
        .stock-info.text-danger {
            color: #dc3545 !important;
        }
        
        .quantity-plus:disabled,
        .quantity-minus:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        .cart-position {
            position: relative;
        }
        
        .cart-position .quantity {
            border-left: none !important;
            border-right: none !important;
        }
        
        .cart-position .quantity-plus,
        .cart-position .quantity-minus {
            border: 1px solid #ddd;
            background: #f8f9fa;
            transition: all 0.2s ease;
        }
        
        .cart-position .quantity-plus:hover,
        .cart-position .quantity-minus:hover {
            background: #e9ecef;
            border-color: #adb5bd;
        }
        
        /* Simple Coupon System Styles */
        .applied-coupon-info {
            background: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: 5px;
            padding: 15px;
            margin-top: 10px;
        }
        
        .coupon-savings-display {
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px solid #e9ecef;
        }
        
        /* Message Styles */
        #coupon-message {
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
        }
        
        #coupon-message.text-success {
            background: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
        }
        
        #coupon-message.text-danger {
            background: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
        }
        
        #coupon-message.text-info {
            background: #d1ecf1;
            border: 1px solid #bee5eb;
            color: #0c5460;
        }
        
        /* Button States */
        #apply-coupon-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        
        .cart-sbu-color {
            font-weight: 600;
            color: #dc3545 !important;
        }
 
        /* Beautiful Notification System */
        .notification-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 10000;
            max-width: 400px;
            width: 100%;
        }

        .notification {
            display: flex;
            align-items: center;
            padding: 16px 20px;
            margin-bottom: 10px;
            border-radius: 12px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-family: 'Poppins', sans-serif;
            font-weight: 500;
            animation: slideInNotification 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .notification:hover {
            transform: translateX(-5px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
        }

        .notification.success {
            background: linear-gradient(135deg, #28a745, #336699);
            color: white;
        }

        .notification.error {
            background: linear-gradient(135deg, #dc3545, #ff9933);
            color: white;
        }

        .notification.warning {
            background: linear-gradient(135deg, #ff9933, #ffcc66);
            color: #333;
        }

        .notification.info {
            background: linear-gradient(135deg, #336699, #1914fe);
            color: white;
        }

        .notification-icon {
            margin-right: 12px;
            font-size: 20px;
            flex-shrink: 0;
        }

        .notification-content {
            flex: 1;
        }

        .notification-title {
            font-weight: 600;
            font-size: 16px;
            margin-bottom: 4px;
        }

        .notification-message {
            font-weight: 400;
            font-size: 14px;
            opacity: 0.95;
            line-height: 1.4;
        }

        .notification-close {
            margin-left: 12px;
            cursor: pointer;
            font-size: 18px;
            opacity: 0.8;
            transition: opacity 0.2s ease;
        }

        .notification-close:hover {
            opacity: 1;
        }

        @keyframes slideInNotification {
            from {
                transform: translateX(100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @keyframes slideOutNotification {
            from {
                transform: translateX(0);
                opacity: 1;
            }
            to {
                transform: translateX(100%);
                opacity: 0;
            }
        }

        .notification.slide-out {
            animation: slideOutNotification 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
        }

        /* Login Required Modal Styles */
        .login-required-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(5px);
            z-index: 10001;
            display: flex;
            align-items: center;
            justify-content: center;
            animation: fadeIn 0.3s ease;
        }

        .login-required-content {
            background: white;
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            max-width: 500px;
            width: 90%;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
            animation: scaleIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .login-required-icon {
            font-size: 64px;
            color: #336699;
            margin-bottom: 20px;
        }

        .login-required-title {
            font-size: 24px;
            font-weight: 600;
            color: #333;
            margin-bottom: 12px;
            font-family: 'Poppins', sans-serif;
        }

        .login-required-message {
            font-size: 16px;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.5;
        }

        .login-required-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
        }

        .btn-login-required {
            padding: 12px 24px;
            border-radius: 8px;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 16px;
        }

        .btn-login-required.primary {
            background: linear-gradient(135deg, #336699, #1914fe);
            color: white;
        }

        .btn-login-required.primary:hover {
            background: linear-gradient(135deg, #1914fe, #336699);
            transform: translateY(-2px);
        }

        .btn-login-required.secondary {
            background: #f8f9fa;
            color: #6c757d;
            border: 1px solid #dee2e6;
        }

        .btn-login-required.secondary:hover {
            background: #e9ecef;
            color: #495057;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes scaleIn {
            from {
                transform: scale(0.8);
                opacity: 0;
            }
            to {
                transform: scale(1);
                opacity: 1;
            }
        }

        /* Payment Method Modal Styles */
        .payment-methods {
            margin: 20px 0;
        }

        .payment-option {
            display: flex;
            align-items: center;
            padding: 15px;
            margin-bottom: 10px;
            border: 2px solid #e9ecef;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            background: #f8f9fa;
        }

        .payment-option:hover {
            border-color: #336699;
            background: #f0f8ff;
        }

        .payment-option.selected {
            border-color: #336699;
            background: linear-gradient(135deg, #f0f8ff, #e6f3ff);
        }

        .payment-icon {
            margin-right: 15px;
            font-size: 24px;
            color: #336699;
            width: 40px;
            text-align: center;
        }

        .payment-details {
            flex: 1;
        }

        .payment-name {
            font-weight: 600;
            font-size: 16px;
            color: #333;
            margin-bottom: 4px;
        }

        .payment-desc {
            font-size: 14px;
            color: #666;
        }

        .payment-radio {
            margin-left: 15px;
        }

        .payment-radio input[type="radio"] {
            display: none;
        }

        .payment-radio label {
            display: block;
            width: 20px;
            height: 20px;
            border: 2px solid #ddd;
            border-radius: 50%;
            cursor: pointer;
            position: relative;
            transition: all 0.3s ease;
        }

        .payment-radio input[type="radio"]:checked + label {
            border-color: #336699;
            background: #336699;
        }

        .payment-radio input[type="radio"]:checked + label::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 8px;
            height: 8px;
            background: white;
            border-radius: 50%;
        }
        
        #free-shipping-coupon {
            font-size: 12px;
            font-weight: 500;
        }
        
        /* Loading animation */
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .fa-spinner.fa-spin {
            animation: spin 1s linear infinite;
        }