Challenge: Architecting Multi-Brand Theming with Tokens

Consider an enterprise holding company that owns three distinct online fashion brands: 'Luxe' (minimalist, monochrome, high contrast), 'Sport' (vibrant neon greens, energetic), and 'Casual' (warm earthy pastels).

Rather than building three separate codebases or three separate component libraries, the engineering team uses token theming:

• Shared Component Library: All three brands use the exact same accessible React components (<Button>, <Modal>, <Card>).
• Brand Token Sets: Each brand provides its own Tier 1 Primitives and Tier 2 Semantic token mappings in JSON.
• Runtime Swapping: The web application simply swaps the root CSS class (<html class="theme-luxe"> vs <html class="theme-sport">), instantly transforming typography, colors, borders, and shadows without changing a single line of component code.