/* Sticky promotion button */
        .sticky-promo {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #ff6b58 0%, #ed2024 100%);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            z-index: 1000;
            transition: transform 0.3s, box-shadow 0.3s;
            animation: pulse 2s infinite;
        }
        
        .sticky-promo:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 25px rgba(0, 0, 0, 0.35);
        }
        
        .sticky-promo:active {
            transform: scale(0.95);
        }
        
        .dollar-sign {
            font-size: 32px;
            font-weight: bold;
            color: white;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
        }
        
        /* Lightbox overlay */
        .lightbox-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
        }
        
        .lightbox-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .lightbox-content {
            max-width: 90%;
            max-height: 90%;
            position: relative;
        }
        
        .lightbox-img {
            max-width: 100%;
            max-height: 80vh;
            border-radius: 8px;
            box-shadow: 0 5px 25px rgba(0, 0, 0, 0.5);
            object-fit: contain;
        }
        
        .close-btn {
            position: absolute;
            top: -40px;
            right: 0;
            color: white;
            font-size: 30px;
            cursor: pointer;
            background: none;
            border: none;
            outline: none;
        }
        
        .promo-title {
            color: white;
            text-align: center;
            margin-top: 20px;
            font-size: 18px;
        }
        
        /* Animation */
        @keyframes pulse {
            0% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1);
            }
        }
        
        /* Responsive design */
        @media (max-width: 768px) {
            .sticky-promo {
                bottom: 50px;
                right: 20px;
                width: 60px;
                height: 60px;
            }
            
            .dollar-sign {
                font-size: 28px;
            }
            
            .content {
                padding: 20px;
            }
            .promo-title {
                font-size: 14px;
            }

            
        }