.btn {
    border: none;
    cursor: pointer;
    font: inherit;
    padding: 1rem;
    margin: 0;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    border-radius: 0.5rem;
    box-shadow: 0 1px 0.5rem 0 rgba(0, 51, 0, 0.4);
    transition: transform 100ms ease;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:not(:disabled):hover:not(:active) {
    transform: translateY(-2px);
}

/* Don't leave buttons "lifted" after a tap on touch screens */
@media (hover: none) {
    .btn:not(:disabled):hover:not(:active) {
        transform: none;
    }
}