/* Custom glow effect for the main product image */
        .glow-shadow {
            box-shadow: 0 0 25px rgba(59, 130, 246, 0.3);
            animation: breathe 3s infinite alternate;
        }
        @keyframes breathe {
            0% { box-shadow: 0 0 15px rgba(59, 130, 246, 0.2); transform: translateY(0); }
            100% { box-shadow: 0 0 30px rgba(59, 130, 246, 0.5); transform: translateY(-5px); }
        }