/* ============================================================
   WHATSAPP BUTTON — Botão flutuante WhatsApp
   ============================================================ */

.whatsapp-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  animation: pulse-glow 2.5s ease-in-out infinite;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-btn:hover {
  transform: scale(1.1) translateY(-2px);
  animation: none;
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-btn svg,
.whatsapp-btn .whatsapp-icon {
  width: 32px;
  height: 32px;
  fill: white;
  color: white;
}

/* Tooltip */
.whatsapp-btn::before {
  content: 'Fale conosco!';
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--quase-preto);
  color: var(--branco);
  font-size: 0.78rem;
  font-weight: 500;
  font-family: var(--font-family);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.whatsapp-btn::after {
  content: '';
  position: absolute;
  right: calc(100% + 6px);
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--quase-preto);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.whatsapp-btn:hover::before,
.whatsapp-btn:hover::after {
  opacity: 1;
}