.whatsapp-float {
  position: fixed;
  width: 50px;
  height: 50px;
  bottom: 15px;
  right: 15px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 5px rgba(0,0,0,0.3);
  z-index: 9999;
}

.whatsapp-float img {
  width: 28px;
  height: 28px;
  object-fit: cover;
  border-radius: 50%;
}

/* Ajuste para mobile */
@media (max-width: 767px) {
   .whatsapp-float {
    width: 45px;
    height: 45px;
    bottom: 15px;
    right: 15px;
  }
  .whatsapp-float img,
  .side-tab span {
    width: 28px;
    height: 28px;
  }
}