/* Fondo oscuro transparente */
#fbox-background {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 99999;
  justify-content: center;
  align-items: center;
}

/* Contenedor del popup */
#fbox-display {
  background: #181818;
  border-radius: 10px;
  width: 370px;
  padding: 10px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.6);
  position: relative;
}

/* Botón de cerrar */
#fbox-button::before {
  content: "CERRAR ✕";
  position: absolute;
  top: 5px;
  right: 10px;
  background: #444;
  color: #fff;
  padding: 4px 8px;
  font-size: 11px;
  border-radius: 4px;
  cursor: pointer;
  font-family: Arial, sans-serif;
}

#fbox-button:hover::before {
  background: #ff4c4c;
}

/* El iframe del cuadro */
.fb-box iframe {
  width: 100%;
  height: 400px;
  border-radius: 8px;
  background: transparent;
}