# Design

## Context

Output is already bound and a listener exists, but mode dimensions are ignored. See proposal.md.

## Goals / Non-Goals

**Goals:**
- Store output mode width/height.
- Compute default logical size = 0.8 * mode / scale.
- Keep grid resize/preserve behavior.

**Non-Goals:**
- Fullscreen mode.
- Dynamic output hotplug handling beyond first output.

## Decisions

### D1: Output mode storage
- Store `output_width`, `output_height` from `wl_output.mode`.

### D2: Default size computation
- After roundtrip, if output info available, set logical size; else fallback 1024x576.

### D3: Fallback
- 1024x576 logical (~80% of 1280x720) when no output info.

## Open Questions

None.