.bosphora-whatsapp {
  position: fixed;
  right: 24px;
  bottom: max(24px, env(safe-area-inset-bottom));
  z-index: 90;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #fff !important;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px #25d36640;
  isolation: isolate;
  transition: transform 160ms ease;
}
.bosphora-whatsapp::before, .bosphora-whatsapp::after {
  content: '';
  position: absolute;
  inset: -6px;
  border: 2px solid #25d366;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  animation: bosphora-contact-ring 4s ease-out infinite;
  z-index: -1;
}
.bosphora-whatsapp::after { animation-delay: 2s; }
.bosphora-whatsapp svg { width: 30px; height: 30px; }
.bosphora-whatsapp:hover { transform: translateY(-2px); }
.bosphora-whatsapp:focus-visible { outline: 3px solid #dfc274; outline-offset: 6px; }
@keyframes bosphora-contact-ring {
  0% { transform: scale(.96); opacity: .8; }
  70%, 100% { transform: scale(1.55); opacity: 0; }
}
@media (max-width: 600px) {
  .bosphora-whatsapp { width: 52px; height: 52px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
}
@media (prefers-reduced-motion: reduce) {
  .bosphora-whatsapp::before, .bosphora-whatsapp::after { animation: none; }
  .bosphora-whatsapp { transition: none; }
}