/* ============================================================
   WHATSAPP FAB — bordeaux brand color
   ============================================================ */

.whatsapp-fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}

.whatsapp-fab__btn {
  width: 60px;
  height: 60px;
  background: var(--clr-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(123, 28, 46, 0.45);
  transition: all var(--dur-fast) var(--ease);
  color: var(--clr-white);
  font-size: 1.6rem;
  cursor: pointer;
  position: relative;
}

.whatsapp-fab__btn:hover {
  background: var(--clr-red-dark);
  transform: scale(1.1);
  box-shadow: 0 10px 32px rgba(123, 28, 46, 0.55);
}

/* Pulse ring */
.whatsapp-fab__btn::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(123, 28, 46, 0.5);
  animation: waPulse 2s ease-out infinite;
}

@keyframes waPulse {
  0%   { transform: scale(1);   opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}

.whatsapp-fab__tooltip {
  background: var(--clr-dark);
  color: var(--clr-white);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--dur-fast) var(--ease);
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  transform: translateY(-50%) translateX(10px);
}

.whatsapp-fab__tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--clr-dark);
}

.whatsapp-fab:hover .whatsapp-fab__tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

@media (max-width: 768px) {
  .whatsapp-fab {
    bottom: 1.5rem;
    right: 1.5rem;
  }

  .whatsapp-fab__btn {
    width: 54px;
    height: 54px;
    font-size: 1.4rem;
  }
}