Languages

JavaScript (ES6+) - Core application logic HTML5 - Structure and semantic markup CSS3 - Styling, animations, and responsive design

Frameworks & Libraries

React - Component-based UI framework Tailwind CSS - Utility-first styling (or custom CSS with CSS Grid/Flexbox) Lucide React - Clean, consistent icon library

APIs

Spotify Web API - Playlist integration and music playback YouTube Data API - Alternative for embedding playlists Web Audio API - Audio control and ambient sound mixing Canvas API - Particle effects and timer visualizations

Browser Technologies

Local Storage API - Persisting user stats, streaks, and preferences Service Workers - Offline functionality and background timer Notifications API - Break/session reminders

Development Tools

Vite - Fast build tool and dev server npm/yarn - Package management Git/GitHub - Version control

Deployment & Hosting

Vercel or Netlify - Frontend hosting with CI/CD Cloudflare CDN - Fast global content delivery

Design Tools

Figma - UI/UX design and prototyping CSS Variables - Dynamic theming system