/* Mantém o rótulo e o tamanho natural do controle; funciona também em ações só com ícone. */
.action-busy { cursor: progress !important; opacity: .75; }
.action-busy-spinner {
    display: inline-block; width: 1em; height: 1em; margin-inline-start: .4em;
    border: 2px solid currentColor; border-inline-end-color: transparent; border-radius: 50%;
    vertical-align: -.12em; animation: action-busy-spin .75s linear infinite;
}
.action-busy-label {
    position: absolute; width: 1px; height: 1px; overflow: hidden;
    clip-path: inset(50%); white-space: nowrap;
}
@keyframes action-busy-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .action-busy-spinner { animation: none; } }