feat(ui): upgrade Tailwind CSS v3 → v4#45
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crisanlucid
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May 12, 2026
crisanlucid
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- Install tailwindcss@4, @tailwindcss/vite, @tailwindcss/forms@latest
- Remove autoprefixer (built into v4) and postcss-nested (conflicts with v4 nesting)
- Add @tailwindcss/vite plugin to vite.config.ts — faster than PostCSS approach
- Remove tailwindcss and autoprefixer from postcss.config.js
- Delete tailwind.config.js — config now lives in CSS
- Rewrite src/index.css: @import "tailwindcss", @plugin for forms, @theme block for custom font families, breakpoint, and animation
- All existing utility classes and custom CSS classes unchanged
- Install tailwindcss@4, @tailwindcss/vite, @tailwindcss/forms@latest - Remove autoprefixer (built into v4) and postcss-nested (conflicts with v4 nesting) - Add @tailwindcss/vite plugin to vite.config.ts — faster than PostCSS approach - Remove tailwindcss and autoprefixer from postcss.config.js - Delete tailwind.config.js — config now lives in CSS - Rewrite src/index.css: @import "tailwindcss", @plugin for forms, @theme block for custom font families, breakpoint, and animation - All existing utility classes and custom CSS classes unchanged Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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