.whatsapp-float {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #25D366;
  color: #fff;
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.28);
  z-index: 9999;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.whatsapp-float:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(37, 211, 102, 0.34);
  background: #1fbe57;
}

.whatsapp-float:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 4px;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
}

@media (max-width: 640px) {
  .whatsapp-float {
    right: 0.85rem;
    bottom: 0.85rem;
    width: 56px;
    height: 56px;
  }

  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-float,
  .whatsapp-float:hover {
    transition: none;
    transform: none;
  }
}