What problem does it solve? Building a consistent, themeable component library with Tailwind CSS requires coordinating design tokens, variant systems, responsive layouts, and accessibility patterns, which is error-prone when done ad hoc across a codebase. ## Core Features & Use Cases - Design Token Architecture: Implements a three-tier token hierarchy (brand, semantic, component) using CSS variables and HSL color channels for runtime theming and dark mode. - Type-Safe Component Variants: Provides CVA (Class Variance Authority) patterns for buttons, cards, inputs, grids, and dialogs with forwardRef composition and accessibility attributes. - Theming & Animation: Includes a ThemeProvider with system preference detection, dark mode toggling, and tailwindcss-animate enter/exit animation utilities. - Use Case: When standardizing UI across a React application, apply this Skill to scaffold a shadcn/ui-style component library with semantic colors, form validation states, and responsive grid primitives. ## Quick Start Ask the AI to create a Tailwind design system with semantic color tokens, a CVA-based Button component, and dark mode support for your React project.