/* Botón flotante de WhatsApp (solo index) */
.whatsapp-float{
  position:fixed;
  left:18px;
  bottom:18px;
  width:54px;
  height:54px;
  border-radius:50%;
  background:#25D366;
  box-shadow:0 8px 20px rgba(0,0,0,.35);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:9000;
  text-decoration:none;
}
.whatsapp-float:hover{
  filter:brightness(1.05);
  box-shadow:0 10px 24px rgba(0,0,0,.4);
}
.whatsapp-float__icon{
  width:28px;
  height:28px;
  display:block;
}
@media (max-width:640px){
  .whatsapp-float{
    left:14px;
    bottom:14px;
    width:50px;
    height:50px;
  }
  .whatsapp-float__icon{
    width:26px;
    height:26px;
  }
}