.centercar-contacts {
    text-align: center;
    font-family: sans-serif;
}
.mobile-layout {
    display: none;
}
.desktop-layout {
    display: block;
}
.btn {
    display: inline-block;
    padding: 12px 20px;
    margin: 10px;
    background-color: #990000;
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
}

/* Colori personalizzati */
.btn.green {
    background-color: #25D366;
}
.btn.red {
    background-color: #990000;
}
.btn.red.disabled {
    background-color: #990000;
    color: white;
    cursor: default;
    pointer-events: none;
}

/* RESPONSIVE PER MOBILE */
@media only screen and (max-width: 768px) {
    .mobile-layout {
        display: block;
    }
    .desktop-layout {
        display: none;
    }

    .btn {
        display: block;          /* Uno sotto l’altro */
        width: 90%;              /* Più largo */
        margin: 10px auto;       /* Centrato */
        box-sizing: border-box;
    }
}