.mh-wa-fab{
  position:fixed; right:18px; bottom:18px; z-index:1040;
  display:inline-flex; align-items:center; gap:8px;
  background:#25D366; color:#fff;
  padding:12px 18px; border-radius:999px;
  font-weight:600; font-size:.95rem; line-height:1; text-decoration:none;
  box-shadow:0 6px 20px rgba(0,0,0,.22);
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.mh-wa-fab:hover{ background:#1ebe5d; color:#fff; transform:translateY(-2px); box-shadow:0 10px 26px rgba(0,0,0,.28); }
.mh-wa-fab i{ font-size:1.4rem; }
/* En móvil el FAB queda circular (solo ícono) para no tapar contenido. */
@media (max-width:575.98px){
  .mh-wa-fab{ right:14px; bottom:14px; padding:14px; border-radius:50%; }
  .mh-wa-fab-label{ display:none; }
  .mh-wa-fab i{ font-size:1.55rem; }
}