@media (max-width: 640px){
  .hnac-box { padding: 12px !important; }
  .hnac-flex, .hnac-row { display: flex; flex-direction: column; gap: 8px; }
  .hnac-btn, .button, button, input[type="submit"] { width: 100%; }
  table.widefat { display: block; overflow-x: auto; white-space: nowrap; }
  input, select, textarea, button { font-size: 16px; }
}