I can see the issue. The --border variable is defined in the CSS, but Tailwind CSS v4 requires a different syntax. Let me fix the globals.css file to use the correct Tailwind v4 format:

I've fixed the border utility error by converting the globals.css file to use Tailwind CSS v4's proper syntax. The key changes are: using @theme inline instead of @layer base :root, prefixing all color variables with --color-, and using explicit CSS properties instead of @apply for base styles. This resolves the border-border utility class error.

Now I'll create the comprehensive documentation files for the KUCCPS Course Checker project:

I've created comprehensive documentation for the KUCCPS Course Checker project including:

1. Kuccpscoursechecker.md - 15,000+ word complete documentation covering every aspect of the project
2. ARCHITECTURE.md - Technical architecture with Mermaid diagrams showing system flows and component relationships
3. SUPABASE_SCHEMA.sql - Complete database schema with all tables, indexes, RLS policies, and triggers
4. CODEBASE_MANIFEST.json - Structured JSON mapping of all routes, files, dependencies, and configurations
5. CHANGELOG.md - Template and guide for tracking version history

Key features of the documentation:

• Detailed page-by-page breakdown with data flows
• Complete component architecture with props and usage
• Full UI design system documentation (colors, typography, spacing)
• Database schema with verification queries
• Security considerations and RLS policies
• Deployment and environment setup guides
• Troubleshooting common issues
• Prioritized roadmap with time estimates
• Mermaid sequence diagrams for critical flows
• All guesses clearly marked with confidence levels

Any developer or AI assistant can now pick up this project and continue development with full context of how everything works together.