
Tailwind v4 Design Tokens: Colors, Dark Mode and Contrast
Tailwind v4 design tokens from a production React library: @theme inline, semantic surfaces, dark mode and a contrast check for CI.
Guides, tutorials and honest comparisons for building React and Tailwind CSS interfaces that work on phones and with AI coding agents. From the team behind Wingo UI, a mobile-first React component library you install as source code. Originally published on wingo-ui.com/blog.

Tailwind v4 design tokens from a production React library: @theme inline, semantic surfaces, dark mode and a contrast check for CI.
When table rows should become cards below 768px, which columns survive, and how sorting and bulk actions work without headers.

A React bottom sheet for the web on vaul: snap points, drag to dismiss, nested sheets, the on-screen keyboard and the home indicator, with code.

Claude Code shadcn setup, tested on shadcn 4.21.4: the MCP server, the skill, a second registry, a CLAUDE.md block and prompts that work.

Free and paid UI libraries checked in October 2026 by license, price, mobile behavior and MCP support, with a pick per use case.

Bottom sheets instead of popovers, 44px touch targets, safe areas, dvh, keyboard-aware bars and tables as cards.
