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Chat UI: distinct background band for user messages #225

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Merged
pufit merged 1 commit into from
Jul 31, 2026
+8 −3
Merged

Chat UI: distinct background band for user messages #225

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2 changes: 1 addition & 1 deletion web/src/components/Chat/UserMessage.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ export function UserMessage({ message }: { message: ChatMessage }) {
const files = message.blocks.filter(b => b.type === 'file') as FileBlockData[];

return (
<div className="py-4 px-5">
<div className="py-4 px-5 msg-user" data-role="user">
<div className="max-w-[var(--chat-width)] mx-auto">
<div className="flex gap-3">
<div className="w-7 h-7 rounded-full bg-surface-raised flex items-center justify-center text-xs font-medium text-text-muted shrink-0 mt-0.5">
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9 changes: 7 additions & 2 deletions web/src/index.css
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Expand Up @@ -211,12 +211,17 @@ body {
::-webkit-scrollbar-thumb:hover { background: var(--theme-border); }

/* ── Chat message backgrounds ── */
/* Dark: assistant messages are slightly darker than the chat bg */
/* Dark: assistant messages sink slightly below the chat bg; user prompts rise
to a greyer surface so the two roles read as distinct bands when scrolling. */
.msg-assistant { background: var(--theme-bg-sunken); }
/* Light: invert — assistant messages are lighter (white) to stand out */
.msg-user { background: var(--theme-surface-hover); }
/* Light: invert — assistant messages are lighter (white) to stand out; user
prompts stay on the page bg (already distinct from the white assistant band). */
[data-theme="light"] .msg-assistant { background: var(--theme-surface); }
[data-theme="light"] .msg-user { background: transparent; }
@media (prefers-color-scheme: light) {
:root:not([data-theme="dark"]) .msg-assistant { background: var(--theme-surface); }
:root:not([data-theme="dark"]) .msg-user { background: transparent; }
}

/* Markdown rendering styles */
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