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Restore the ultrathink frame border effect #3625

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Merged
juliusmarminge merged 1 commit into from
Jul 1, 2026
Merged

Restore the ultrathink frame border effect #3625

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23 changes: 23 additions & 0 deletions apps/web/src/index.css
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Original file line number Diff line number Diff line change
Expand Up @@ -812,12 +812,35 @@ label:has(> select#reasoning-effort) select {
#ec4899 90%,
#ff6b6b 100%
);
position: relative;
background: transparent;
}

.ultrathink-frame::before {
content: "";
position: absolute;
inset: 0;
border-radius: inherit;
padding: 2px;
background-image: var(--ultrathink-spectrum);
background-size: 220% 220%;
pointer-events: none;
filter: saturate(0.82) brightness(0.92);
-webkit-mask:
linear-gradient(#000 0 0) content-box,
linear-gradient(#000 0 0);
-webkit-mask-composite: xor;
mask:
linear-gradient(#000 0 0) content-box,
linear-gradient(#000 0 0);
mask-composite: exclude;
animation: ultrathink-rainbow 10s linear infinite;
}

.ultrathink-frame > * {
position: relative;
}

@cursor cursor Bot Jul 1, 2026

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Two pixel border clipped

Medium Severity

The ::before mask uses padding: 2px for a 2px ring, but the composer wrapper keeps p-px (1px) and .ultrathink-frame > * stacks the glass surface above the pseudo-element. The inner half of the ring sits under the surface, so the restored ultrathink border reads thinner or clipped.

Fix in Cursor Fix in Web

Reviewed by Cursor Bugbot for commit 8cd353a. Configure here.


.ultrathink-chroma {
animation: ultrathink-chroma-shift 10s linear infinite;
}
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