fix: soften the transition above the chat composer
Add a theme-aware 16px fade above the composer to soften the clipped message edge without changing layout or pointer interactions. Document the treatment in the UI design system. Release note: 聊天输入区顶部增加淡渐变,让消息与输入框之间的衔接更自然,并适配浅色和深色主题。
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@@ -163,6 +163,7 @@
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- 页面顶部和底部内边距默认为 `32px`。
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- `master-detail` 的左栏建议为 `280px` 至 `360px`,右栏占剩余空间。分隔线和滚动容器属于壳层,不由内容卡片模拟。
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- 聊天输入区可以粘附在 `reading` 壳层底部,但消息内容和输入区必须共享同一阅读宽度。
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- 输入区顶部向消息区延伸 `--space-4`(16px)的透明到 `--surface-raised` 渐变,柔化消息裁切边缘;渐变不占布局空间、不拦截鼠标事件,并随主题切换。
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- 宽表格可在 `dashboard` 内容区内部横向滚动,不得撑宽整个应用窗口。
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## 5. 信息层级
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@@ -7785,6 +7785,7 @@ button > svg {
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}
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.composer-wrap {
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position: relative;
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width: 100%;
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max-width: 100%;
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min-width: 0;
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@@ -7795,6 +7796,17 @@ button > svg {
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background: var(--surface-raised);
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}
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.composer-wrap::before {
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position: absolute;
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right: 0;
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bottom: 100%;
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left: 0;
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height: var(--space-4);
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background: linear-gradient(to bottom, transparent, var(--surface-raised));
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content: "";
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pointer-events: none;
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}
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.composer {
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width: 100%;
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max-width: 100%;
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