/* === SECCIÓN: BOTÓN WHATSAPP FLOTANTE === */

.whatsapp-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: var(--z-whatsapp);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-hover);
  text-decoration: none;
  transition: box-shadow var(--transition-fast),
              transform var(--transition-fast),
              border-color var(--transition-fast);
  cursor: pointer;
}

.whatsapp-btn:hover {
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.25);
  border-color: rgba(37, 211, 102, 0.35);
  transform: translateY(-2px);
}

.whatsapp-btn:hover .whatsapp-btn__tooltip {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

/* === ÍCONO === */
.whatsapp-btn__icon {
  width: 26px;
  height: 26px;
  color: #25D366;
  animation: whatsapp-pulse 2.4s ease-in-out infinite;
}

@keyframes whatsapp-pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.1); }
}

/* === TOOLTIP === */
.whatsapp-btn__tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateX(6px) translateY(-50%);
  background-color: var(--color-text-primary);
  color: var(--color-white);
  font-family: var(--font-ui);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast),
              transform var(--transition-fast);
}

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

/* Reducir movimiento */
@media (prefers-reduced-motion: reduce) {
  .whatsapp-btn__icon {
    animation: none;
  }
}