The UI read flat and boring. Reskin to one charm/TUI-inspired layout in two
palettes (CSS custom properties): a warm "reader" light theme (sketch B) and a
"cozy terminal" dark theme (sketch C).
- Palette chosen in cascade order: :root light default; an OS-preference dark
block scoped to :root:not([data-theme]) so it applies only absent an explicit
choice; and :root[data-theme="dark"|"light"] set by a header toggle that
outranks the media query by specificity and persists in localStorage (guarded,
degrades to OS default). A <head> init script applies the stored choice before
paint, so no flash of the wrong palette.
- Charm touches via existing classes (no templ structure churn): monospace meta
lines, accent uppercase section dividers with a trailing rule, pill buttons, a
lifted/accent-edged expanded card.
- Error/danger shades become --err-* tokens so they follow the theme, replacing
three per-block prefers-color-scheme dark overrides.
- Theme toggle wired into Layout and PublicLayout headers.
BDD: docs/use-cases/visual_theme.feature un-pended, mapped in scenarioCoverage.
TDD: internal/web/visual_theme_test.go (palettes, OS default, persisted toggle,
expanded-card embed). Verified light+dark on list/reader/welcome via web-shot.
Sketches kept as the design record. ui-spec.md as-built row added.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
