- PageFrame: parchment-background frame with title, diamond-rule divider,
scrollable content area, and optional bottom-pinned footer slot
- PrimaryButton: shared full-width button (light blue, drop shadow, pressed
state via translateY + shadow reduction) — used by TitleScreen and PlayerSetup
- Global button base in index.css ensures touch-friendly sizing everywhere
- TitleScreen consolidated to use PrimaryButton instead of its own button style
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
