design-system-patterns

# Design System Patterns Master design system architecture to create consistent, maintainable, and scalable UI foundations across web and mobile applications. ## When to Use This Skill - Creating design tokens for colors, typography, spacing, and shadows - Implementing light/dark theme switching with CSS custom properties - Building multi-brand theming systems - Architecting component libraries with consistent APIs - Establishing design-to-code workflows with Figma tokens - Creating semantic token hierarchies (primitive, semantic, component) - Setting up design system documentation and guidelines ## Core Capabilities ### 1. Design Tokens - Primitive tokens (raw values: colors, sizes, fonts) - Semantic tokens (contextual meaning: text-primary, surface-elevated) - Component tokens (specific usage: button-bg, card-border) - Token naming conventions and organization - Multi-platform token generation (CSS, iOS, Android) ### 2. Theming Infrastructure - CSS custom properties architecture - Theme context providers in React - Dynamic theme switching - System preference detection (prefers-color-scheme) - Persistent theme storage - Reduced motion and high contrast modes ### 3. Component Architecture - Compound component patterns - Polymorphic components (as prop) - Variant and size systems - Slot-based composition - Headless UI patterns - Style props and responsive variants ### 4. Token Pipeline - Figma to code synchronization - Style Dictionary configuration - Token transfo...