.whatsapp {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 16px;
  background: #25d366;
  color: #fff;
  border-radius: 999px;
  box-shadow: 0 10px 30px #12233c35;
  font-size: 12px;
  font-weight: 800;
  transition: transform .2s, box-shadow .2s;
}
.whatsapp:hover { transform: translateY(-3px); box-shadow: 0 14px 34px #12233c50; }
.whatsapp svg { width: 24px; height: 24px; fill: currentColor; }
@media (max-width: 560px) {
  .whatsapp { right: 16px; bottom: 16px; padding: 13px; }
  .whatsapp span { display: none; }
}