.is-submitting { cursor: wait; }
.is-submitting::before { content: ""; display: inline-block; width: 1em; height: 1em; margin-inline-end: .5em; vertical-align: -.12em; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: form-feedback-spin .75s linear infinite; }
@keyframes form-feedback-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .is-submitting::before { animation: none; } }