/* --- POPUP --- */
.popup {
  display: none; /* oculto por defecto */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  justify-content: center;
  align-items: center;
  z-index: 9999; /* encima de todo */
}

.popup-contenido {
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  width: 90%;
  max-width: 400px;
  box-shadow: 0px 4px 10px rgba(0,0,0,0.3);
  position: relative;
}

.popup-contenido h2 {
  margin-top: 0;
  color: #333;
}

.cerrar {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  cursor: pointer;
  color: #333;
}

/* Botón */
.btn {
  display: inline-block;
  background: #ff5722;
  color: #fff;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: 0.3s;
}
.btn:hover {
  background: #e64a19;
}