# Dependencies
node_modules/
package-lock.json
yarn.lock

# Environment Variables (CRITICAL - Never commit!)
.env
.env.local
.env.production

# Logs
logs/
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

# OS Files
.DS_Store
Thumbs.db
.vscode/
.idea/

# Testing
coverage/
.nyc_output/

# Temporary files
*.tmp
*.temp
.cache/