/* 图文树形分类 */
#cmsTreeMenu {
    --indent: 14px;
    --row-radius: 10px;
    --row-pad-y: 10px;
    --row-pad-x: 10px;
    --text: rgba(0, 0, 0, .86);
    --muted: rgba(0, 0, 0, .55);
    --hover: rgba(0, 0, 0, .04);
    --active: rgba(0, 0, 0, .07);
    --line: rgba(0, 0, 0, .08);

    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
    color: var(--text);
}

#cmsTreeMenu * {
    box-sizing: border-box;
}

#cmsTreeMenu .panel {
    max-width: 520px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, .04);
}

#cmsTreeMenu .toolbar {
    display: flex;
    gap: 10px;
    padding: 10px;
    border-bottom: 1px solid var(--line);
}

#cmsTreeMenu .btn {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 999px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 13px;
}

#cmsTreeMenu .btn:hover {
    background: var(--hover);
}

#cmsTreeMenu .title {
    font-weight: 600;
    font-size: 14px;
    padding: 10px;
}

/* tree */
#cmsTreeMenu .tree {
    font-size: 14px;
    user-select: none;
}

/* 一行：左边链接、右边三角按钮 */
#cmsTreeMenu .tree-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    /* 由内部元素控制 padding，避免点击区域混乱 */
    border-radius: var(--row-radius);
    margin-top: 4px;
}

#cmsTreeMenu .tree-row:hover {
    font-weight: 600;
}

/* 名称链接：占满剩余空间，可跳转 */
#cmsTreeMenu .tree-link {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: inherit;
    padding: var(--row-pad-y) var(--row-pad-x);
    border-radius: var(--row-radius);
}

#cmsTreeMenu .tree-link:hover {
    background: transparent;
}

/* hover 由 .tree-row 控制 */
#cmsTreeMenu .tree-link .label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 展开按钮：只点它才展开 */
#cmsTreeMenu .toggle {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    margin-right: 6px;
    border: 0;
    background: transparent;
    cursor: pointer;
    border-radius: 10px;
    position: relative;
}

#cmsTreeMenu .toggle:hover {
    background: rgba(0, 0, 0, .06);
}

#cmsTreeMenu .chev {
    width: 16px;
    height: 16px;
    position: absolute;
    inset: 0;
    margin: auto;
}

#cmsTreeMenu .chev::before {
    content: "";
    position: absolute;
    inset: 0;
    margin: auto;
    width: 6px;
    height: 6px;
    border-right: 2px solid var(--muted);
    border-bottom: 2px solid var(--muted);
    transform: rotate(-45deg);
    transition: .18s;
}

/* 旋转取决于 aria-expanded */
#cmsTreeMenu .toggle[aria-expanded="true"] .chev::before {
    transform: rotate(45deg);
}

/* 没子级：隐藏展开按钮但保持布局不抖 */
#cmsTreeMenu .tree-item.is-leaflike>.tree-row .toggle {
    visibility: hidden;
    pointer-events: none;
    /* 可选：箭头变淡 */
    opacity: 0.3;
}

/* children */
#cmsTreeMenu .tree-children {
    display: none;
    margin-top: 4px;
}

#cmsTreeMenu .tree-item.is-open>.tree-children {
    display: block;
}

/* 叶子 */
#cmsTreeMenu .tree-leaf {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: var(--row-radius);
    padding: var(--row-pad-y) var(--row-pad-x);
    margin-top: 4px;
}

#cmsTreeMenu .tree-leaf:hover {
    font-weight: bold;
}

#cmsTreeMenu .tree-leaf.is-active {
    font-weight: bold;
}

/* 缩进：由 --level 控制 */
#cmsTreeMenu .tree-row,
#cmsTreeMenu .tree-leaf {
    padding-left: calc(var(--row-pad-x) + var(--level, 0)*var(--indent));
}