What problem does it solve? Interfaces often look cluttered, flat, or confusing because developers lack a systematic design method. This Skill provides concrete, tactic-driven UI design guidance based on the Refactoring UI book, turning vague visual problems into specific fixes. ## Core Features & Use Cases - Visual Hierarchy Guidance: Establishes clear hierarchy using weight, color, and contrast instead of size alone, and de-emphasizes secondary content correctly. - Layout & Spacing Systems: Applies consistent geometric spacing scales (4-128px) and type scales (12-72px) instead of arbitrary values. - Color, Typography & Depth Tactics: Covers grayscale-first design, saturated grays, line-height rules, and shadow-based elevation. - Use Case: A developer's dashboard feels cluttered and users miss the primary action. The Skill walks through a refactor: increase whitespace, boost primary button contrast, fade secondary actions, and replace borders with background differences. ## Quick Start Review my settings page UI and suggest improvements based on Refactoring UI principles.