.whatsapp-fab {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
  background-color: #25D366; /* Cor oficial do WhatsApp */
  color: var(--white);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-medium);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
}

.whatsapp-fab:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-dark);
  color: var(--white);
}

.whatsapp-fab i {
  font-size: 28px;
  line-height: 1;
}

/* Animação de entrada sutil (opcional) */
.whatsapp-fab {
  animation: fab-pulse 2s infinite ease-in-out;
}

@keyframes fab-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}