.category-list {
    list-style: none;
    padding: 0;
}
.category-list li {
    margin-bottom: 5px;
}
.depth-1 {
    padding-left: 15px;
}
.depth-2 {
    padding-left: 30px;
}
/* Plus/minus toggle */
.toggle-subcats {
    display: inline-block;
    width: 18px;
    height: 18px;
    margin-right: 5px;
    text-align: center;
    font-weight: bold;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 3px;
    line-height: 16px;
    user-select: none;
}

.no-toggle {
    display: inline-block;
    width: 18px;
    height: 18px;
    margin-right: 5px;
}

.category-list ul {
    margin-left: 20px;
    display: none; /* Hidden by default */
}

.category-list li.open > ul {
    display: block; /* Show when parent is open */
}