Three regressions from Task 7-9 caused /login /register to render broken:
- bg-glow not rendering: puro.css scopes .bg-glow to .puro-page,
AuthLayout isn't inside one. Fix: duplicate bg-glow rules into
AuthLayout scoped CSS keyed on .auth-shell-split.
- .auth-main had no background: right side showed naked body bg.
Fix: .auth-shell-split now sets var(--bg-0) for whole shell.
- Heading/label colors used text-gray-900 light-mode classes,
invisible on dark bg. Fix: switch to explicit text-slate-50/400,
and :deep() override for form inputs via AuthLayout split scope.
Legacy (non-split) mode unaffected.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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