.pv-whatsapp {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: calc(22px + env(safe-area-inset-bottom));
  z-index: 1000;
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 4px 16px rgb(0 0 0 / 22%);
  text-decoration: none;
  isolation: isolate;
}
.pv-whatsapp::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid #25d366;
  border-radius: inherit;
  z-index: -1;
  pointer-events: none;
  animation: pv-whatsapp-pulse 2.8s ease-out infinite;
}
.pv-whatsapp svg { width: 34px; height: 34px; fill: currentColor; }
.pv-whatsapp:hover { background: #1eac52; color: #fff; }
.pv-whatsapp:focus-visible { outline: 3px solid #173c4a; outline-offset: 5px; }
@keyframes pv-whatsapp-pulse {
  0% { transform: scale(1); opacity: .55; }
  70%, 100% { transform: scale(1.5); opacity: 0; }
}
@media (max-width: 620px) {
  .pv-whatsapp { width: 54px; height: 54px; right: max(16px, env(safe-area-inset-right)); bottom: calc(18px + env(safe-area-inset-bottom)); }
  .pv-whatsapp svg { width: 31px; height: 31px; }
}
@media (prefers-reduced-motion: reduce) { .pv-whatsapp::before { animation: none; display: none; } }
@media print { .pv-whatsapp { display: none; } }