/* sidebar */

#sidebar {
    height: calc(100% - 16px);
    overflow-y: auto;
    box-sizing: border-box;
    background-color: silver;
    display: flex;
    flex-direction: column;
    z-index: 10;
    padding: 0.5ex;
    box-shadow: 0 0 1ex;
    font-size: small;
    user-select: none;
}
#sidebar .section {
    color: black;
    text-align: center;
    font-weight: bold;
    padding-top: 1ex;
}
#sidebar button, #sidebar label {
    text-align: left;
    background-color: transparent;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    border: none;
    outline: none;
    font-size: small;
}
#sidebar input[type=checkbox] {
    vertical-align: middle;
}
#sidebar button.selected {
    background-color: lime;
}
#sidebar button:hover, #sidebar label:hover {
    background-color: skyblue;
}
#sidebar button[disabled] {
    text-align: center;
}
#sidebar button[disabled]:hover {
    background-color: transparent;
}
#sidebar button:active, #sidebar button.selected2 {
    background-color: lime;
}
#sidebar .two_columns_OFF {
    display: flex;
    flex-direction: column;
}
#sidebar .two_columns {
    width: 200px;
    column-count: 2;
    column-gap: 0;
}
#sidebar .two_columns button {
     white-space: nowrap;
     width: 100%;
     display: block;
}
#sidebar .bottom {
    flex: 1;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 1ex;
}