UI Reasoning: Spatial Computing OS / App. Recommended Pattern: Immersive + Interactive. Style Priority: Spatial UI (VisionOS) + Glassmorphism. Color Mood: Frosted Glass + System Colors + Depth. Typography Mood: Spatial + Readable typography. Key Effects: Depth hierarchy + Gaze interactions. Decision Rules: {"must_have": "depth-hierarchy", "must_have": "environment-awareness"}. Anti-Patterns: 2D design + No spatial depth. Severity: HIGH.