/* ============================================================
   whatsapp.css — floating WhatsApp action button (FAB)
   ============================================================ */

.whatsapp-fab {
  position: fixed;
  right: clamp(1rem, 3vw, 1.6rem);
  bottom: clamp(1rem, 3vw, 1.6rem);
  z-index: 60;
  width: 58px; height: 58px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #fff;
  box-shadow: 0 8px 22px rgba(37, 211, 102, .45);
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}
.whatsapp-fab:hover { background: var(--whatsapp-strong); color: #fff; transform: translateY(-3px) scale(1.04); }
.whatsapp-fab:active { transform: translateY(0) scale(.98); }
.whatsapp-fab[hidden] { display: none; }

/* Gentle attention pulse (respects reduced motion) */
.whatsapp-fab::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(37, 211, 102, .5);
  animation: wa-pulse 2.4s ease-out infinite;
}
@keyframes wa-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(37,211,102,.5); }
  70%  { box-shadow: 0 0 0 16px rgba(37,211,102,0); }
  100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-fab::after { animation: none; }
}