.animate-gradient {
        background: linear-gradient(-45deg, #4c1d95, #7c3aed, #2563eb, #9333ea);
        background-size: 400% 400%;
        animation: gradientBG 15s ease infinite;
    }
    .mobile-nav-shadow {
        box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    }
    .shine-effect {
        position: relative;
        overflow: hidden;
    }
    .shine-effect::after {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 50%;
        height: 100%;
        background: linear-gradient(
            to right, 
            rgba(255,255,255,0) 0%, 
            rgba(255,255,255,0.4) 50%, 
            rgba(255,255,255,0) 100%
        );
        transform: skewX(-25deg);
    }
    .group:hover .shine-effect::after {
        left: 150%;
        transition: all 0.5s ease-in-out;
    }
    
    @keyframes gradientBG {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }