.upl-audio,.upl-video,.upl-preview{display:block;width:100%;max-width:640px;margin:1rem auto}
.upl-preview{height:auto;cursor:crosshair;touch-action:none;border:1px solid var(--borde,#555);border-radius:8px}
.upl-zona{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}
.upl-audio[hidden],.upl-video[hidden],.upl-preview[hidden]{display:none}
@media(min-width:700px){.upl-zona{grid-template-columns:repeat(4,minmax(0,1fr))}}