.wa-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25d366; /* verde oficial WhatsApp */
  color: white;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0px 4px 6px rgba(0,0,0,0.3);
  z-index: 999;
  text-decoration: none;
}