# UI Contract

- The interface should feel discovered, not decorated.
- Mystery cannot come at the cost of usability.
- Mobile primary tabs are Read, Map, Library.
- Wider screens may expand into a richer multi-panel archive/map-room composition.
- The reader's exact Thought remains accessible throughout a Journey.
- Following Thread and Exploring Book must be visibly distinct modes.
- Core visual language: ink black, oxblood/crimson, restrained antique brass, vellum/parchment, fine rules, careful hierarchy, luminous position markers.
- Avoid generic SaaS cards, fantasy-game HUD clutter, cheap occult imagery, and tiny unreadable type.
