/* Botón de contacto global: flota sobre el contenido sin alterar el layout. */
.whatsapp-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 10000;
  display: flex;
  width: 60px;
  height: 60px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #25d366;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.24);
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.whatsapp-float img {
  display: block;
  width: 34px;
  height: 34px;
}

.whatsapp-float:hover {
  background: #20bd5a;
  box-shadow: 0 9px 24px rgba(0, 0, 0, 0.3);
  transform: scale(1.07);
}

.whatsapp-float:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(37, 211, 102, 0.45);
}

@media (max-width: 640px) {
  .whatsapp-float {
    right: 16px;
    bottom: 16px;
    width: 54px;
    height: 54px;
  }

  .whatsapp-float img {
    width: 30px;
    height: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-float {
    transition: none;
  }
}