/* Fondo oscuro */
.modal {
    display: flex; /* Se muestra automáticamente */
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    justify-content: center;
    align-items: center;
}

/* Contenido del modal */
.modal-content {
    background: white;
    width: 80%;
    max-width: 900px;
    padding: 20px;
    border-radius: 10px;
    position: relative;
}

/* Botón cerrar */
.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

/* Documento (PDF o IMG) */
.modal-content iframe {
    width: 100%;
    height: 500px;
    border-radius: 5px;
}