/* ============================================================
 * 分屏多Tab工作台（SplitScreen，见 split-screen.js）
 * 面板结构：.right-split-panel > .split-panel-body > (.split-tabs-bar + .split-tab-panels)
 * ============================================================ */

/* 面板：有Tab打开时显示（.visible），聊天区收缩为45% */
.right-split-panel{
	display: none;
	flex-direction: column;
	height: 100%;
	background: #fff;
	border-left: 1px solid #e8e8e8;
	overflow: hidden;
}
.right-split-panel.visible{
	display: flex;
}

/* 面板主体：上下结构（Tab条 + 内容区） */
.split-panel-body{
	flex: 1;
	overflow: hidden;
	display: flex;
	flex-direction: column;
}

/* ==================== Tab条（滚动区 + 右上角固定关闭按钮） ==================== */
.split-tabs-bar{
	display: flex;
	align-items: stretch;
	background: #fafafa;
	border-bottom: 1px solid #e8e8e8;
	flex-shrink: 0;
	min-height: 38px;
}
.split-tabs-scroll{
	display: flex;
	align-items: stretch;
	overflow-x: auto;
	overflow-y: hidden;
	flex: 1;
	min-width: 0;
}
.split-tabs-scroll::-webkit-scrollbar{
	height: 4px;
}
/* 右上角固定：关闭整个分屏 */
.split-panel-close{
	display: flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	flex-shrink: 0;
	font-size: 18px;
	color: #999;
	cursor: pointer;
	user-select: none;
	border-left: 1px solid #eee;
	transition: all 0.15s;
}
.split-panel-close:hover{
	background: #ececec;
	color: #333;
}
.split-tab-item{
	display: flex;
	align-items: center;
	gap: 6px;
	padding: 0 8px 0 12px;
	height: 38px;
	border-right: 1px solid #eee;
	cursor: pointer;
	font-size: 13px;
	color: #666;
	white-space: nowrap;
	flex-shrink: 0;
	max-width: 200px;
	transition: background 0.15s;
}
.split-tab-item:hover{
	background: #f0f2f5;
}
.split-tab-item.active{
	background: #fff;
	color: #222;
	font-weight: 600;
}
.split-tab-icon{
	font-size: 13px;
	flex-shrink: 0;
}
.split-tab-title{
	overflow: hidden;
	text-overflow: ellipsis;
	max-width: 130px;
}
.split-tab-close{
	width: 16px;
	height: 16px;
	line-height: 15px;
	text-align: center;
	border-radius: 50%;
	color: #999;
	font-size: 13px;
	flex-shrink: 0;
	opacity: 0.5;
	transition: all 0.15s;
}
.split-tab-item:hover .split-tab-close{
	opacity: 1;
}
.split-tab-close:hover{
	background: #e0e0e0;
	color: #333;
}

/* ==================== 内容区（每个Tab一个pane，切换显隐不销毁） ==================== */
.split-tab-panels{
	flex: 1;
	overflow: hidden;
	position: relative;
}
.split-pane{
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	display: none;
	flex-direction: column;
	background: #fff;
	overflow: hidden;
}
.split-pane.active{
	display: flex;
}

/* pane 标题栏（左侧标题 + 右侧操作；rich 类型无标题栏，AiEditor 内部已有标题与导出） */
.split-pane-header{
	display: flex;
	align-items: center;
	gap: 8px;
	height: 40px;
	padding: 0 14px;
	border-bottom: 1px solid #f0f0f0;
	background: #fafafa;
	flex-shrink: 0;
}
.split-pane-header-icon{
	font-size: 14px;
	flex-shrink: 0;
}
.split-pane-header-title{
	flex: 1;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	font-size: 13px;
	color: #555;
}
.split-pane-header-actions{
	display: flex;
	align-items: center;
	gap: 14px;
	flex-shrink: 0;
}
.split-pane-action{
	display: flex;
	align-items: center;
	gap: 5px;
	padding: 4px 12px;
	border: 1px solid #e0e3e8;
	border-radius: 6px;
	font-size: 12px;
	color: #555;
	cursor: pointer;
	user-select: none;
	transition: all 0.15s;
	background: #fff;
}
.split-pane-action:hover{
	color: #3855d5;
	border-color: #3855d5;
	background: #f5f8ff;
}
.split-pane-action svg{
	display: block;
}

/* pane 内容容器 */
.split-pane-body{
	flex: 1;
	overflow: hidden;
	position: relative;
}
.split-pane-body .ss-editor-mount{
	width: 100%;
	height: 100%;
}

/* ==================== 各类预览容器 ==================== */
/* 图片 */
.split-preview-image{
	width: 100%;
	height: 100%;
	overflow: auto;
	background: #2b2b2b;
	display: flex;
	align-items: center;
	justify-content: center;
}
.split-preview-image img{
	max-width: 96%;
	max-height: 96%;
	border-radius: 4px;
}
/* 视频 */
.split-preview-video{
	width: 100%;
	height: 100%;
	background: #111;
	display: flex;
	align-items: center;
	justify-content: center;
}
.split-preview-video video{
	max-width: 100%;
	max-height: 100%;
	outline: none;
}
/* iframe（pdfjs / officeapps / html） */
.split-frame{
	width: 100%;
	height: 100%;
	border: none;
	display: block;
	background: #fff;
}
/* 文本（txt/json/code 等） */
.split-preview-text{
	width: 100%;
	height: 100%;
	overflow: auto;
	padding: 16px 20px;
	box-sizing: border-box;
	background: #fafafa;
}
.split-preview-text pre{
	margin: 0;
	white-space: pre-wrap;
	word-break: break-all;
	font-size: 13px;
	line-height: 20px;
	color: #333;
	font-family: Consolas, Monaco, monospace;
}
/* 未知类型/加载失败兜底 */
.split-preview-fallback{
	width: 100%;
	height: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 14px;
	color: #999;
	font-size: 14px;
}
.split-preview-fallback .fallback-icon{
	font-size: 44px;
	opacity: 0.5;
}
.split-preview-fallback .fallback-name{
	color: #555;
	font-weight: 600;
	max-width: 70%;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.split-preview-fallback .fallback-btn{
	padding: 7px 20px;
	background: #3855d5;
	color: #fff;
	border-radius: 6px;
	cursor: pointer;
	font-size: 13px;
	text-decoration: none;
}
.split-preview-fallback .fallback-btn:hover{
	background: #2a44bb;
}

/* AiEditor 组件适配：撑满分屏宽度 */
.right-split-panel .ae-app,
.right-split-panel .ae-toolbar{
	width: 100%;
}

/* ==================== docx / xlsx 本地渲染预览 ==================== */
/* docx（docx-preview 渲染，灰色底 + 白色页面） */
.split-preview-docx{
	width: 100%;
	height: 100%;
	overflow: auto;
	background: #f0f1f3;
	box-sizing: border-box;
}
.split-preview-docx .docx-wrapper{
	background: #f0f1f3;
	padding: 16px 0;
}
.split-preview-docx .docx-loading{
	text-align: center;
	color: #999;
	padding: 40px 0;
	font-size: 13px;
}

/* xlsx（x-spreadsheet 网格 + sheet切换条） */
.split-preview-xlsx{
	width: 100%;
	height: 100%;
	display: flex;
	flex-direction: column;
	background: #fff;
}
.split-preview-xlsx .xlsx-sheetbar{
	flex-shrink: 0;
	display: flex;
	gap: 2px;
	padding: 4px 8px;
	border-bottom: 1px solid #eee;
	background: #fafafa;
	overflow-x: auto;
}
.split-preview-xlsx .xlsx-sheet-tab{
	padding: 3px 12px;
	font-size: 12px;
	color: #555;
	cursor: pointer;
	border-radius: 4px;
	white-space: nowrap;
	user-select: none;
}
.split-preview-xlsx .xlsx-sheet-tab:hover{
	background: #eef1f6;
}
.split-preview-xlsx .xlsx-sheet-tab.active{
	background: #3855d5;
	color: #fff;
}
.split-preview-xlsx .xlsx-grid{
	flex: 1;
	overflow: hidden;
	min-height: 0;
}