.whatsapp-float {
  position: fixed;
  bottom: 100px;
  right: 30px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 12px;
}

.whatsapp-tooltip {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: var(--transition);
  position: relative;
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 6px solid var(--border-glass);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.whatsapp-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  text-decoration: none;
  flex-shrink: 0;
}

.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 40px rgba(37, 211, 102, 0.5);
}

.whatsapp-btn i {
  animation: whatsappPulse 2s ease-in-out infinite;
}

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

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 24px;
    right: 16px;
  }
  .whatsapp-btn {
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
  }
  .whatsapp-tooltip { display: none; }
}