.container {
    position: absolute;
    z-index: 100;
    top: -5%;
    left: 25%;
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}
.header {
    padding: 15px;
    border-bottom: 1px solid #e8e8e8;
    background-color: #fafafa;
}

.header h2 {
    font-size: 16px;
    font-weight: normal;
    margin-bottom: 15px;
    color: #333;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.search-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #666;
    white-space: nowrap;
}

.checkbox-label input {
    margin-right: 5px;
}

.field-list {
    height: 400px;
    overflow-y: auto;
    padding: 10px 0;
}

.tree-node {
    padding: 5px 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background-color 0.2s;
    position: relative; /* 添加相对定位 */
}

.tree-node:hover {
    background-color: #f0f7ff;
}

.tree-node.selected {
    background-color: #e6f7ff;
}

.tree-node-content {
    display: flex;
    align-items: center;
    flex: 1;
}

.expand-icon {
    width: 16px;
    height: 16px;
    margin-right: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #666;
    font-size: 12px;
    transition: transform 0.2s ease;
}

.expand-icon.expanded {
    transform: rotate(90deg);
}

.node-checkbox {
    margin-right: 8px;
}

.node-text {
    font-size: 14px;
    color: #333;
}

.node-type {
    margin-left: 8px;
    font-size: 12px;
    color: #999;
    background: #f0f0f0;
    padding: 1px 5px;
    border-radius: 3px;
}

.children {
    margin-left: 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.children.expanded {
    max-height: 300px; /* 限制子节点容器高度 */
    overflow-y: auto; /* 子节点内容过多时显示滚动条 */
    padding-right: 10px; /* 避免滚动条与内容重叠 */
}

.footer {
    padding: 15px;
    border-top: 1px solid #e8e8e8;
    display: flex;
    justify-content: space-between;
    gap: 10px;
    background-color: #fafafa;
}

.footer-left {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 6px 16px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    background-color: white;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #1890ff;
    color: white;
    border-color: #1890ff;
}

.btn-primary:hover {
    background-color: #40a9ff;
}

.btn:hover {
    border-color: #40a9ff;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #999;
}

.info-text {
    font-size: 12px;
    color: #999;
    margin-top: 10px;
    padding: 0 15px;
}

/* 层级缩进线优化 */
.tree-node[data-level="1"] {
    padding-left: 35px;
}

.tree-node[data-level="1"]::before {
    content: "";
    position: absolute;
    left: 25px;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: #e8e8e8;
}

.tree-node[data-level="2"] {
    padding-left: 55px;
}

.tree-node[data-level="2"]::before {
    content: "";
    position: absolute;
    left: 45px;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: #e8e8e8;
}

.tree-node[data-level="3"] {
    padding-left: 75px;
}

.tree-node[data-level="3"]::before {
    content: "";
    position: absolute;
    left: 65px;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: #e8e8e8;
}

/* 连接线优化 */
.tree-node:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 15px;
    top: 50%;
    width: 10px;
    height: 1px;
    background-color: #e8e8e8;
}

.tree-node[data-level="1"]::after {
    left: 35px;
}

.tree-node[data-level="2"]::after {
    left: 55px;
}

.tree-node[data-level="3"]::after {
    left: 75px;
}

.select-field-input {
    padding: 8px 12px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    width: 200px;
}

.status-bar {
    display: flex;
    align-items: center;
    font-size: 12px;
    color: #666;
}

/* 添加子节点滚动条样式优化 */
.children::-webkit-scrollbar {
    width: 6px;
}

.children::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.children::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.children::-webkit-scrollbar-thumb:hover {
    background: #aaa;
}