# 05. Design Layered Navigation UI System

meta:
  id: podtui-navigation-theming-improvements-05
  feature: podtui-navigation-theming-improvements
  priority: P2
  depends_on: [podtui-navigation-theming-improvements-02, podtui-navigation-theming-improvements-03, podtui-navigation-theming-improvements-04]
  tags: [design, navigation, ui]

objective:
- Design the layered navigation UI based on user requirements
- Create visual design for layer separation and active states
- Define how layers should be displayed and navigated

deliverables:
- Navigation design document
- Layer visualization mockups
- Clear specifications for layer colors and borders
- Implementation plan for layered navigation

steps:
- Review user requirements for navigation (clear layer separation, bg colors, left/right navigation, enter/escape controls)
- Analyze current layerDepth signal implementation
- Design layer separation mechanism (borders, backgrounds, spacing)
- Define active layer visual state (bg color, borders, indicators)
- Design navigation controls (left/right arrows, enter arrow down, escape arrow up)
- Create layer visualization showing how multiple layers should work
- Document layer structure and hierarchy
- Create implementation plan for Navigation component
- Define theme colors for layer backgrounds

tests:
- Unit: None (design task)
- Integration: None (design task)

acceptance_criteria:
- Navigation design document is created
- Layer separation mechanism is clearly specified
- Active layer visual state is defined
- Navigation controls are documented
- Implementation plan is provided

validation:
- Review design document for clarity
- Verify it addresses all user requirements
- Check that design is feasible to implement

notes:
- Layers should be clearly delineated with visual separation
- Active layer should have distinct background color
- Navigation should be intuitive with clear visual feedback
- Consider terminal width limitations
- Design should work with existing theme system