.ref-button {
    font-family: Arial;
    font-weight: bold;
    font-size: 1.4vw;
    text-transform: uppercase;
    letter-spacing: 0.075vw;

    margin-top: 3vw;
    padding: 0.8vw 2vw;
    background-color: var(--bg-color);
    border-radius: 10vw;

    transition: transform 100ms ease;
}

.ref-button:hover {
    background-color: color-mix(in srgb, var(--bg-color) 100%, black 10%);
    transform: scale(1.025);
}

@media screen and (max-width: 1000px) and (orientation: portrait) {
    .ref-button {
        padding: 2vw 3vw;
        font-size: 3vw;
    }
}