.breathing-shadow {
            animation: breathe 4s ease-in-out infinite;
        }
        @keyframes breathe {
            0%, 100% { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }
            50% { box-shadow: 0 20px 25px -5px rgba(30, 58, 138, 0.2), 0 10px 10px -5px rgba(30, 58, 138, 0.1); }
        }