Scalar's /api reference injects a *global* `body { background-color:
var(--scalar-background-1) }` (via its linked stylesheet + a runtime
<style id=scalar-style>) that TanStack doesn't remove on a client-side route
change. After navigating /api -> /docs without a reload, that rule kept
painting the docs body: Scalar's stock gray (#0f0f0f) while .dark-mode lingered
on <body>, or transparent once the class was gone. A hard reload was fine
because the stylesheet was never loaded there.
Fix: give --scalar-background-1 a global fallback = --color-fd-background so any
non-API page paints its own surface while Scalar's sheet lingers; /api itself
overrides it via the higher-specificity body.{dark,light}-mode rule. Also strip
the leftover #scalar-style/#scalar-refs nodes and body mode-class when /api
unmounts so the DOM matches a fresh load. Verified light + dark via headless
CDP: post-nav docs body now equals a fresh reload (#141019 / #f0ebff).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
enricobuehler
f03150d457