.rainbow-button{transition:all .3s ease}.rainbow-button:hover{transform:scale(1.05);box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.05);filter:brightness(1.05)}.animate-gradient{background-size:200% 200%;animation:gradient-shift 6s ease infinite}@keyframes gradient-shift{0%{background-position:0 50%}50%{background-position:100% 50%}to{background-position:0 50%}}