.floating-whatsapp {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,.25);
  z-index: 100;
  animation: pulse-ring 2.8s ease-out infinite;
}