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fix(web): stacked composer banners no longer show dark seam bands #32683

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fix(web): stacked composer banners no longer show dark seam bands #32683

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33eec53
fix(web): stacked composer banners no longer show dark seam bands
Pulsar-Programmer Nov 7, 2026
eaa8b6a
Merge remote-tracking branch 'github/main' into t3/fix-stacked-compos…
maria-rcks Nov 10, 2026
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2 changes: 2 additions & 0 deletions apps/web/src/components/chat/ComposerBanner.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,8 @@ function Attachment({ className, ...props }: ComponentProps<"div">) {
data-slot="composer-banner-attachment"
className={cn(
"mx-auto -mb-[calc(1rem+1px)] w-[calc(100%-2*var(--chat-composer-drawer-inset))]",
// Only the banner touching the composer gets the dark seam shade; stacked ones would band.
"[&:has(+[data-slot=composer-banner-attachment])]:[--chat-composer-attached-seam:transparent]",
"[&+[data-slot=composer-banner-attachment]_[data-composer-banner-surface=attached]]:before:rounded-none [&+[data-slot=composer-banner-attachment]_[data-composer-banner-surface=attached]]:before:border-t-0 [&+[data-slot=composer-banner-attachment]_[data-composer-banner-surface=attached]]:[--composer-banner-corner-top:var(--control-radius)]",
"[&+*_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:before:rounded-none [&+*_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:before:border-t-0 [&+*_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:[--composer-banner-corner-top:var(--control-radius)]",
className,
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2 changes: 1 addition & 1 deletion apps/web/src/index.css
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Expand Up @@ -216,7 +216,7 @@ html[data-mobile-composer-route-transition="true"]::view-transition-old(t3-mobil
linear-gradient(
to top,
transparent 0 var(--chat-composer-attachment-overlap),
rgb(0 0 0 / 18%) var(--chat-composer-attachment-overlap),
var(--chat-composer-attached-seam, rgb(0 0 0 / 18%)) var(--chat-composer-attachment-overlap),
transparent calc(var(--chat-composer-attachment-overlap) + 10px)
);
--color-zinc-25: oklch(99.2% 0 0);
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