.btn:active{transform:scale(.97)}.btn.enviando{animation:latido-envio 1.1s ease-in-out infinite}@keyframes latido-envio{0%,to{opacity:1}50%{opacity:.5}}.ocard{position:relative}.ocard-ring{position:absolute;inset:0;border-radius:var(--r);box-shadow:0 0 0 4px var(--accent);opacity:0;pointer-events:none}@media (prefers-reduced-motion:reduce){.btn:active{transform:none}.btn.enviando{animation:none}}