fix(webkit): draw the progress bar's track on --bg-placeholder - #893
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The track was an opaque raised surface, so it only held its 3:1 contrast against the fill on the one background that surface was picked for. --bg-placeholder is an alpha overlay, so the track keeps that contrast on any background the bar is placed over — canvas, surface, raised or overlay.
robson-junior-azion
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Aug 20, 2026
guilherme-santana-azion
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Aug 20, 2026
marcelo-messa-azion
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Aug 20, 2026
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Summary
--bg-surface-raised, an opaque surface, so its 3:1 contrast against the fill only held on the background that token was chosen for. On a raised or overlay background the track disappeared into it.--bg-placeholderis an alpha overlay, so the track keeps its contrast on any background the bar sits over. Spec's Theme gaps + a11y notes updated to match (checksum +last_updatedrefreshed).How to test
cd packages/webkit && npx vitest run src/components/feedback/progress-bar→ 18 passed.pnpm storybook:dev→ Components/Feedback/ProgressBar. The track reads as a recessed groove in both themes; place a bar inside aCardBox(raised) and inside a Dialog (overlay) and the track is still visible against both.Notes
catalog.jsonneeds no rebuild (--bg-placeholderis already in its token set).