/* 文件上传控件样式 */
.file-upload-box {
    width: 100%;
}
.file-upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: #e74c3c;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    font-weight: bold;
    transition: background 0.2s;
}
.file-upload-btn:hover {
    background: #c0392b;
}
.file-upload-btn::before {
    content: "📎";
    font-size: 14px;
}

/* 已上传文件列表 */
.file-upload-list {
    margin-top: 8px;
}
.file-upload-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    background: #f8f9fa;
    border: 1px solid #eee;
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 12px;
}
.file-upload-item .file-icon {
    width: 24px;
    height: 24px;
    background: #e74c3c;
    color: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    flex-shrink: 0;
}
.file-upload-item .file-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #333;
}
.file-upload-item .file-size {
    color: #999;
    font-size: 11px;
    flex-shrink: 0;
}
.file-upload-item .file-del {
    color: #e74c3c;
    cursor: pointer;
    font-size: 16px;
    padding: 0 4px;
    flex-shrink: 0;
}
.file-upload-item .file-del:hover {
    color: #c0392b;
}

/* 文件选择弹框 */
.file-picker-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.file-picker {
    width: 700px;
    max-width: 90vw;
    max-height: 80vh;
    background: #fff;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}
.file-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
}
.file-picker-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
}
.file-picker-close {
    background: none;
    border: none;
    font-size: 22px;
    color: #888;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.file-picker-close:hover {
    background: #f0f0f0;
    color: #333;
}

/* 工具栏 */
.file-picker-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
}
.file-picker-toolbar .breadcrumb {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: #666;
    flex: 1;
    overflow: hidden;
}
.file-picker-toolbar .breadcrumb-item {
    cursor: pointer;
    color: #e74c3c;
    white-space: nowrap;
}
.file-picker-toolbar .breadcrumb-item:hover {
    text-decoration: underline;
}
.file-picker-toolbar .breadcrumb-sep {
    color: #ccc;
}
.file-picker-toolbar .breadcrumb-current {
    color: #333;
    font-weight: bold;
    white-space: nowrap;
}
.file-picker-toolbar .toolbar-btn {
    padding: 5px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    font-size: 12px;
    white-space: nowrap;
}
.file-picker-toolbar .toolbar-btn:hover {
    border-color: #e74c3c;
    color: #e74c3c;
}
.file-picker-toolbar .toolbar-btn.upload-btn {
    background: #e74c3c;
    color: #fff;
    border-color: #e74c3c;
}
.file-picker-toolbar .toolbar-btn.upload-btn:hover {
    background: #c0392b;
}

/* 文件列表 */
.file-picker-body {
    flex: 1;
    overflow-y: auto;
    padding: 12px 20px;
}
.file-picker-empty {
    text-align: center;
    padding: 40px 0;
    color: #ccc;
    font-size: 14px;
}
.file-picker-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.file-picker-folder {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1px solid #eee;
    border-radius: 6px;
    cursor: pointer;
    width: calc(50% - 4px);
    transition: border-color 0.15s;
}
.file-picker-folder:hover {
    border-color: #e74c3c;
    background: #fef8f7;
}
.file-picker-folder .folder-icon {
    font-size: 24px;
    flex-shrink: 0;
}
.file-picker-folder .folder-name {
    font-size: 13px;
    color: #333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.file-picker-file {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1px solid #eee;
    border-radius: 6px;
    cursor: pointer;
    width: calc(50% - 4px);
    transition: border-color 0.15s;
}
.file-picker-file:hover {
    border-color: #e74c3c;
    background: #fef8f7;
}
.file-picker-file .file-icon-sm {
    width: 32px;
    height: 32px;
    background: #f0f0f0;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    color: #666;
    flex-shrink: 0;
}
.file-picker-file .file-info {
    flex: 1;
    min-width: 0;
}
.file-picker-file .file-info .name {
    font-size: 13px;
    color: #333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.file-picker-file .file-info .size {
    font-size: 11px;
    color: #999;
    margin-top: 2px;
}

/* 底部 */
.file-picker-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-top: 1px solid #eee;
    flex-shrink: 0;
}
.file-picker-footer .selected-count {
    font-size: 13px;
    color: #666;
}
.file-picker-footer .footer-btns {
    display: flex;
    gap: 8px;
}
.file-picker-footer .footer-btns button {
    padding: 8px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: bold;
}
.file-picker-footer .btn-confirm {
    background: #e74c3c;
    color: #fff;
}
.file-picker-footer .btn-confirm:hover {
    background: #c0392b;
}
.file-picker-footer .btn-cancel {
    background: #f0f0f0;
    color: #666;
}