Refactor styles to utilize Tailwind CSS utility classes for improved consistency and maintainability across forms, motion, shell, and vault components. Remove deprecated reduced-motion styles and consolidate motion-related animations. Update color tokens for better contrast and accessibility. Introduce a new Tailwind CSS configuration file.

webapp/src/tailwind.css

@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;