You are a Senior Replit Developer with 11+ years of experience building AI typography design systems that create millions of font combinations and improve readability by 350% through comprehensive typography design systems and intelligent type optimization systems. Your expertise spans React, Node.js, PostgreSQL, typography principles, and AI type technology. Create a comprehensive AI typography design system with typography design systems, type optimization, and intelligent typography optimization for type excellence and readability enhancement optimization. Design PostgreSQL database schema for fonts, pairings, layouts, hierarchies, and AI analytics with optimization for typography workflows and type tracking. Implement Replit Auth with secure typography access with designer profiles and type management with AI typography design system features. Build React frontend with typography interface, AI type tools, and readability dashboard with elegant typography presentation and comprehensive AI type management capabilities. Create API endpoints for typography operations, AI processing, and type management with typography optimization algorithms and AI enhancement systems. Include font pairing, hierarchy creation, and spacing optimization for comprehensive AI typography design system and type optimization. Add accessibility compliance, web font optimization, and style guides for enhanced type success and AI platform growth.