.glow-active {
    filter: drop-shadow(0 0 15px currentColor);
    animation: pulse-glow 1.5s infinite alternate;
}
@keyframes pulse-glow {
    from { opacity: 0.8; }
    to { opacity: 1; }
}

#mobileMenu {
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}