body {
    padding: 16px;
}
.track {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 12px;
}
.step {
    display:inline-block;
    width:22px;
    height:22px;
    border:1px solid #ccc;
    margin:2px;
    text-align:center;
    line-height:22px;
    font-size:12px;
    cursor:pointer;
    user-select:none;
}
.step.active {
    background:#0d6efd;
    color:#fff;
}
.step.filled {
    background:#198754;
    color:#fff;
}
.step.recording {
    outline: 2px solid #ffc107;
}

#select-current-track .form-check{
    margin: 0;
    padding: 0;
}
#select-current-track .form-check input{
    opacity: 0;
    position: absolute;
}
#select-current-track .form-check label{
    background: var(--bs-black);
    color: var(--bs-white);
    padding: 5px 10px;
    border-radius: var(--bs-border-radius-lg);
}
#select-current-track .form-check input:checked + label{
    background: var(--bs-blue);
    color: var(--bs-white);
}

#btn-record{
    border-color: transparent;
    background: transparent;
}
#btn-record.active{
    border-color: var(--bs-btn-hover-bg);
    background: var(--bs-btn-hover-bg);
}