.btn-default {
    color: var(--bs-btn-color, #212529);
    background-color: var(--bs-secondary-bg-subtle, #f8f9fa);
    border-color: var(--bs-border-color, #ced4da);
}

.btn-default:hover,
.btn-default:focus {
    color: var(--bs-btn-hover-color, #212529);
    background-color: var(--bs-tertiary-bg, #e9ecef);
    border-color: var(--bs-border-color, #adb5bd);
}

.btn-xs {
    --bs-btn-padding-y: .125rem;
    --bs-btn-padding-x: .5rem;
    --bs-btn-font-size: .75rem;
    padding: var(--bs-btn-padding-y) var(--bs-btn-padding-x);
    font-size: var(--bs-btn-font-size);
    line-height: 1.3;
    border-radius: var(--bs-border-radius-sm, .25rem);
}

.help-block {
    display: block;
    margin-top: .35rem;
    color: var(--bs-secondary-color, #6c757d);
    font-size: .875rem;
}

.control-label {
    display: inline-block;
    margin-bottom: .4rem;
    font-weight: 600;
}

.text-muted {
    color: var(--bs-secondary-color, #6c757d) !important;
}

.abcmap-copy-btn {
    white-space: nowrap;
}

@media (max-width: 767.98px) {
    .abcmap-mobile-stack tr,
    .abcmap-mobile-stack tbody,
    .abcmap-mobile-stack td {
        display: block;
        width: 100%;
    }

    .abcmap-mobile-stack tr {
        border-bottom: 1px solid var(--bs-border-color, #dee2e6);
        padding: .5rem 0;
    }

    .abcmap-mobile-stack td {
        border: 0 !important;
        padding: .3rem 0 !important;
    }

    .abcmap-mobile-stack td[data-label]::before {
        content: attr(data-label);
        display: block;
        margin-bottom: .15rem;
        font-weight: 600;
        color: var(--bs-secondary-color, #6c757d);
    }
}