.mb-whatsapp-floater{
  position:fixed;right:22px;bottom:22px;z-index:9999;width:58px;height:58px;
  border-radius:50%;display:grid;place-items:center;text-decoration:none;
  transition:transform .2s ease,filter .2s ease;
  filter:drop-shadow(0 9px 20px rgba(0,0,0,.30));
}
.mb-whatsapp-floater:hover{transform:translateY(-2px) scale(1.04);filter:drop-shadow(0 12px 24px rgba(0,0,0,.36))}
.mb-whatsapp-floater:focus-visible{outline:3px solid rgba(255,255,255,.9);outline-offset:4px}
.mb-wa-button{
  width:58px;height:58px;border-radius:50%;display:grid;place-items:center;
  background:#25D366;border:1px solid rgba(255,255,255,.16);
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.03);
}
.mb-wa-icon{width:34px;height:34px;display:block}
.mb-whatsapp-label{
  position:absolute;right:70px;white-space:nowrap;background:#101418;color:#fff;
  font:600 12px/1.2 system-ui,-apple-system,Segoe UI,sans-serif;padding:8px 10px;
  border-radius:8px;opacity:0;pointer-events:none;transform:translateX(5px);
  transition:.18s ease;box-shadow:0 8px 22px rgba(0,0,0,.18)
}
.mb-whatsapp-floater:hover .mb-whatsapp-label,.mb-whatsapp-floater:focus-visible .mb-whatsapp-label{opacity:1;transform:none}
@media(max-width:640px){
  .mb-whatsapp-floater{right:14px;bottom:14px;width:54px;height:54px}
  .mb-wa-button{width:54px;height:54px}
  .mb-wa-icon{width:31px;height:31px}
  .mb-whatsapp-label{display:none}
}