.modal {
    display: none;
    position: fixed;
    z-index: 2000; /* más alto que el footer */
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
}

.modal-contenido {
    background-color: #fff;
    color: #000;
    margin: 5% auto;
    padding: 25px;
    width: 80%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.modal-texto p {
    margin-bottom: 15px;
    line-height: 1.5;
}

.cerrar {
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.cerrar:hover {
    color: #000;
}