- Replace JS config (tailwind.config.js) with CSS @theme block in base.css
- Switch from PostCSS to @tailwindcss/vite plugin
- Convert all bg-opacity-*/border-opacity-* to slash syntax (e.g. bg-zinc-900/70)
- Add @custom-variant for mobile and ss variants
- Add @reference to Vue scoped styles using @apply
- Rename v3 utilities: rounded→rounded-sm, backdrop-blur-sm→backdrop-blur-xs,
drop-shadow→drop-shadow-sm, rotate-[25deg]→rotate-25
- Delete obsolete tailwind.config.js and postcss.config.js
- Rename vite.config.js to .mjs for ESM compatibility
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
