Quick Reference (30 seconds)
Core UI/UX Foundation
Enterprise-grade UI/UX foundation integrating design systems (W3C DTCG 2025.10), component architecture (React 19, Vue 3.5), accessibility (WCAG 2.2), icon libraries (200K+ icons), and theming systems.
Unified Capabilities:
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Design Systems: W3C DTCG 2025.10 tokens, Style Dictionary 4.0, Figma MCP workflows
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Component Architecture: Atomic Design, React 19, Vue 3.5, shadcn/ui, Radix UI primitives
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Accessibility: WCAG 2.2 AA/AAA compliance, keyboard navigation, screen reader optimization
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Icon Libraries: 10+ ecosystems (Lucide, React Icons 35K+, Tabler 5900+, Iconify 200K+)
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Theming: CSS variables, light/dark modes, theme provider, brand customization
When to Use:
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Building modern UI component libraries with design system foundations
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Implementing accessible, enterprise-grade user interfaces
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Setting up design token architecture for multi-platform projects
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Integrating comprehensive icon systems with optimal bundle sizes
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Creating customizable theming systems with dark mode support
Module Organization:
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Components: Component Architecture (Atomic Design, component patterns, props APIs)
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Design Systems: Design System Tokens (DTCG tokens, Style Dictionary, Figma MCP)
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Accessibility: Accessibility WCAG (WCAG 2.2 compliance, testing, navigation)
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Icons: Icon Libraries (10+ libraries, selection guide, performance optimization)
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Theming: Theming System (theme system, CSS variables, brand customization)
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Examples: Examples (practical implementation examples)
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Reference: Reference (external documentation links)
Implementation Guide
Foundation Stack (November 2025)
Core Technologies:
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React 19 (Server Components, Concurrent Rendering)
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TypeScript 5.5 (Full type safety, improved inference)
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Tailwind CSS 3.4 (JIT compilation, CSS variables, dark mode)
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Radix UI (Unstyled accessible primitives)
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W3C DTCG 2025.10 (Design token specification)
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Style Dictionary 4.0 (Token transformation)
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Figma MCP (Design-to-code automation)
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Storybook 8.x (Component documentation)
Quick Decision Matrix:
Need Module Key Tools
Design tokens Design System Tokens DTCG 2025.10, Style Dictionary 4.0
Component patterns Component Architecture Atomic Design, React 19, shadcn/ui
Accessibility Accessibility WCAG WCAG 2.2, jest-axe, keyboard nav
Icons Icon Libraries Lucide, React Icons, Tabler, Iconify
Theming Theming System CSS variables, Theme Provider
Examples Examples React/Vue implementations
Quick Start Workflows
- Design System Setup (30 minutes)
Step 1: Initialize design tokens
{ "$schema": "https://tr.designtokens.org/format/", "$tokens": { "color": { "$type": "color", "primary": { "500": { "$value": "#3b82f6" } } }, "spacing": { "$type": "dimension", "md": { "$value": "1rem" } } } }
Step 2: Transform tokens with Style Dictionary
npm install --save-dev style-dictionary npx style-dictionary build
Step 3: Integrate with components
import { colors, spacing } from '@/tokens'
See: Design System Tokens for complete token architecture
- Component Library Setup (45 minutes)
Step 1: Initialize shadcn/ui
npx shadcn-ui@latest init npx shadcn-ui@latest add button form dialog
Step 2: Setup Atomic Design structure
components/ ├── atoms/ (Button, Input, Label) ├── molecules/ (FormGroup, Card) ├── organisms/ (DataTable, Modal)
Step 3: Implement with accessibility
<Button aria-label="Submit form" variant="primary"> Submit </Button>
See: Component Architecture for patterns and examples
- Icon System Integration (15 minutes)
Step 1: Choose icon library
General purpose
npm install lucide-react
Maximum variety
npm install @iconify/react
Dashboard optimized
npm install @tabler/icons-react
Step 2: Implement type-safe icons
import { Heart, Search } from 'lucide-react'
<Search className="w-5 h-5 text-gray-600" />
See: Icon Libraries for library comparison and optimization
- Theme System Setup (30 minutes)
Step 1: Configure CSS variables
:root { --primary: 222.2 47.4% 11.2%; --background: 0 0% 100%; }
.dark { --primary: 210 40% 98%; --background: 222.2 84% 4.9%; }
Step 2: Implement Theme Provider
<ThemeProvider attribute="class" defaultTheme="system"> <App /> </ThemeProvider>
See: Theming System for complete theme system
Key Principles
- Design Token First:
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Single source of truth for design decisions
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Semantic naming (color.primary.500 not blue-500 )
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Multi-theme support (light/dark)
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Platform-agnostic transformation
- Accessibility by Default:
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WCAG 2.2 AA minimum (4.5:1 text contrast)
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Keyboard navigation for all interactive elements
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ARIA attributes for screen readers
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Focus management and visible indicators
- Component Composition:
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Atomic Design hierarchy (Atoms → Molecules → Organisms)
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Props API for reusability
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Variant-based styling (not separate components)
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Type-safe with TypeScript
- Performance Optimization:
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Tree-shaking for icons (import specific, not *)
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Lazy loading for large components
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React.memo for expensive renders
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Bundle size monitoring
Tool Ecosystem
Category Tool Version Purpose
Design Tokens W3C DTCG 2025.10 Token specification
Style Dictionary 4.0+ Token transformation
Components React 19 UI framework
shadcn/ui Latest Component library
Radix UI Latest Accessible primitives
Icons Lucide Latest 1000+ modern icons
React Icons Latest 35K+ multi-library
Iconify Latest 200K+ universal
Theming Tailwind CSS 3.4 Utility-first CSS
CSS Variables Native Theme tokens
Accessibility axe DevTools Latest Accessibility testing
jest-axe Latest Automated a11y tests
Documentation Storybook 8.x Component docs
Figma MCP Latest Design-to-code
Module Cross-Reference
Component Architecture
Focus: Component architecture and implementation patterns
Key Topics:
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Atomic Design (Atoms, Molecules, Organisms)
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React 19 + Server Components
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Vue 3.5 + Composition API
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shadcn/ui component patterns
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Props API design
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Storybook integration
When to Use: Building or architecting UI component libraries
Design System Tokens
Focus: Design token architecture and tooling
Key Topics:
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W3C DTCG 2025.10 token structure
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Style Dictionary configuration
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Multi-theme support
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Figma MCP workflow
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Semantic naming conventions
When to Use: Setting up design system foundations
Accessibility WCAG
Focus: WCAG 2.2 compliance and accessibility testing
Key Topics:
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Color contrast validation (4.5:1 AA, 7:1 AAA)
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Keyboard navigation patterns
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Screen reader optimization (ARIA)
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Focus management
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Automated testing (jest-axe)
When to Use: Ensuring accessibility compliance
Icon Libraries
Focus: Icon library selection and integration
Key Topics:
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10+ library comparison (Lucide, React Icons, Tabler, Iconify)
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Bundle size optimization
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Tree-shaking strategies
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Type-safe icon components
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Performance patterns
When to Use: Integrating icon systems with optimal bundle sizes
Theming System
Focus: Theme system implementation
Key Topics:
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CSS variable architecture
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Light/dark mode switching
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System preference detection
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Brand customization
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Tailwind CSS integration
When to Use: Implementing customizable theming
Examples
Focus: Practical code examples
Key Topics:
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Button component (React, Vue)
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Form validation (Zod + React Hook Form)
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Data table (TanStack Table)
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Modal dialog (focus trap)
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Theme provider
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Icon usage patterns
When to Use: Reference implementations
Reference
Focus: External documentation links
Key Topics:
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Official documentation (DTCG, WCAG, Figma, Storybook)
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Library references (React, Tailwind, Radix UI)
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Tool documentation (Style Dictionary, jest-axe)
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Best practice guides
When to Use: Finding official resources
Best Practices
DO:
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✅ Use semantic design tokens (color.primary.500 not blue-500 )
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✅ Follow Atomic Design hierarchy (Atoms → Molecules → Organisms)
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✅ Verify 4.5:1 contrast ratio for all text (WCAG AA)
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✅ Implement keyboard navigation for all interactive elements
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✅ Tree-shake icons (import specific, avoid import * )
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✅ Use CSS variables for theme customization
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✅ Document all props with TypeScript types
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✅ Test components with jest-axe for accessibility
DON'T:
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❌ Hardcode colors (use design tokens)
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❌ Skip ARIA labels on icon-only buttons
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❌ Import entire icon libraries (import * from 'lucide-react' )
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❌ Forget to test dark mode
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❌ Ignore keyboard navigation
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❌ Skip focus indicators
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❌ Use inline styles (use Tailwind classes)
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❌ Forget loading states
Works Well With
Skills:
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moai-lang-unified
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TypeScript and JavaScript best practices
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moai-foundation-core
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TRUST 5 quality validation
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moai-library-nextra
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Documentation generation
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moai-library-shadcn
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shadcn/ui specialized patterns (complementary)
Agents:
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code-frontend
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Frontend component implementation
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design-uiux
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Design system architecture
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mcp-figma
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Figma integration workflows
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core-quality
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Accessibility and quality validation
Commands:
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/moai:2-run
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TDD implementation cycle
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/moai:3-sync
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Documentation generation
Migration from Legacy Skills
This skill consolidates 4 previous skills:
moai-component-designer → Component Architecture
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Atomic Design patterns
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React 19 / Vue 3.5 examples
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Component architecture
moai-design-systems → Design System Tokens + Accessibility WCAG
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DTCG token architecture
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Figma MCP workflows
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WCAG 2.2 compliance
moai-icons-vector → Icon Libraries
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Icon library comparison
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Performance optimization
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Integration patterns
moai-library-shadcn (partially) → Component Architecture + Theming System
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shadcn/ui patterns
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Theme system
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Component composition
Note: moai-library-shadcn remains as a complementary skill for shadcn/ui-specific advanced patterns.
Official Resources
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W3C DTCG: https://designtokens.org
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WCAG 2.2: https://www.w3.org/WAI/WCAG22/quickref/
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React 19: https://react.dev
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Tailwind CSS: https://tailwindcss.com
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Radix UI: https://www.radix-ui.com
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shadcn/ui: https://ui.shadcn.com
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Storybook: https://storybook.js.org
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Figma MCP: https://help.figma.com/hc/en-us/articles/32132100833559
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Style Dictionary: https://styledictionary.com
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Lucide Icons: https://lucide.dev
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Iconify: https://iconify.design
Last Updated: 2025-11-26 Status: Production Ready Version: 1.0.0