.pd-whatsapp-fab {
  position: fixed;
  right: max(24px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  z-index: 25;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  padding: 0;
  border: 1px solid var(--rule-strong, #65666e);
  border-radius: 50%;
  background: var(--ink, #0e0e0f);
  color: var(--paper, #f6f5f8);
  box-shadow: 0 6px 24px rgb(0 0 0 / .18);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 160ms ease, background-color 160ms ease, color 160ms ease;
}
.pd-whatsapp-fab svg { display: block; width: 28px; height: 28px; fill: currentColor; pointer-events: none; }
.pd-whatsapp-fab:focus-visible { outline: 3px solid var(--blue, #0450d4); outline-offset: 4px; }
.pd-whatsapp-fab:active { transform: scale(.95); }
@media (hover: hover) {
  .pd-whatsapp-fab:hover { transform: translateY(-3px); background: #eaf1e8; color: #0e0e0f; }
}
body.mobile-nav-open .pd-whatsapp-fab,
body.mobile-menu-open .pd-whatsapp-fab,
body:has(.blog-mobile-menu[open]) .pd-whatsapp-fab,
body:has(dialog[open]) .pd-whatsapp-fab { visibility: hidden; }
@media (max-width: 600px) {
  .pd-whatsapp-fab { right: max(16px, env(safe-area-inset-right)); bottom: max(16px, env(safe-area-inset-bottom)); }
}
@media (prefers-reduced-motion: reduce) { .pd-whatsapp-fab { transition: none; } }
@media print { .pd-whatsapp-fab { display: none; } }