@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
.animate-spin {
    animation: spin 1s linear infinite;
}
.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}