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I built a modern office furniture catalog using Next.js 15.1.5 with React 19 and TypeScript.

Key Features: - 11 language support (TR, EN, DE, FR, ES, IT, PT, AR, RU, ZH, JA) - Mobile-first responsive design - High performance (SSR, ISR, image optimization) - Advanced search and filtering - AI-powered blog system (Groq AI integration) - Project references showcase - Contact forms with WhatsApp integration - Admin panel with GitHub API integration - PWA support

Tech Stack: - Next.js 15.1.5 (App Router) - React 19.0.0 - TypeScript 5 - TailwindCSS 3.4.1 - Framer Motion 12.3.0 - Groq AI SDK (blog generation) - GitHub API (content management)

Stats: - 141+ TypeScript/TSX files - 24,627+ lines of code - 50+ products - 13 API endpoints - 100+ React components

What I learned: - Next.js App Router best practices - Complex i18n implementation (11 languages) - Image optimization strategies - Performance optimization (memoization, lazy loading) - Accessibility improvements (WCAG compliance) - Mobile-first design patterns

Live Product: https://www.ofistek.com.tr

Would love feedback on UX, performance, and code structure!

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