#social-login

Integrate social login with OAuth 2.0. Flow: 1. Redirect to provider (Google, Facebook, GitHub). 2. User authorizes application. 3. Provider redirects with authorization code. 4. Exchange code for access token. 5. Fetch user profile. 6. Create or update user in database. 7. Issue JWT to client. 8. Handle errors and edge cases. Use libraries like passport.js. Implement state parameter for CSRF. Store tokens securely.