.whatsapp-button {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #25d366;
  color: white;
  border-radius: 50px;
  padding: 1rem 1.5rem;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
  transition: all 0.3s;
  z-index: 999;
}

.whatsapp-button:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

@media (max-width: 768px) {
  .whatsapp-button {
    bottom: 20px;
    right: 20px;
    padding: 0.8rem 1.2rem;
    font-size: 0.9rem;
  }
}