diff --git a/.gitignore b/.gitignore
index e918b93..fd344cf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,12 @@
 ehthumbs.db
 Thumbs.db
 Desktop.ini
+$RECYCLE.BIN/
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
 
 # IDE and Editor files
 .vscode/
@@ -19,6 +25,13 @@ Desktop.ini
 *.swp
 *.swo
 *~
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.tmproj
+.vscode-test/
 
 # Logs
 *.log
@@ -26,6 +39,7 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
+pnpm-debug.log*
 
 # Temporary files
 *.tmp
@@ -34,15 +48,22 @@ lerna-debug.log*
 *.backup
 *~
 
-# Environment files
+# Environment files (CRITICAL - never commit sensitive data)
 .env
 .env.local
+.env.development
+.env.test
+.env.production
 .env.*.local
+*.env
 
 # Build directories (general)
 dist/
 build/
 out/
+.output/
+.vercel/
+.netlify/
 
 # Documentation generated files (except committed docs)
 *.pdf
@@ -51,6 +72,8 @@ out/
 *.db
 *.sqlite
 *.sqlite3
+*.db-shm
+*.db-wal
 
 # Archives
 *.zip
@@ -58,3 +81,35 @@ out/
 *.rar
 *.7z
 
+# Security and credentials
+*.pem
+*.key
+*.cert
+*.crt
+*.p12
+*.pfx
+*.jks
+*.keystore
+secrets/
+credentials/
+
+# Package manager lock files (optional - uncomment if needed)
+# package-lock.json
+# yarn.lock
+# pnpm-lock.yaml
+
+# Cache directories
+.cache/
+.parcel-cache/
+.eslintcache
+.stylelintcache
+
+# Coverage reports
+coverage/
+*.lcov
+.nyc_output/
+
+# Debug files
+*.dmp
+*.stackdump
+
diff --git a/backend/.gitignore b/backend/.gitignore
index 2d3163d..7790482 100644
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -137,3 +137,53 @@ public/uploads/
 *.bak
 *.backup
 *.tmp
+
+# Production build files
+dist/
+build/
+
+# PM2 process manager
+.pm2/
+ecosystem.config.js
+
+# Docker volumes and data
+docker-data/
+*.dockerignore
+
+# Test files
+test-results/
+*.test.js.snap
+
+# Package lock files (optional - uncomment if you want to ignore)
+# package-lock.json
+# yarn.lock
+
+# Sequelize CLI
+.sequelizerc.local
+
+# SSL certificates (never commit)
+*.crt
+*.pem
+*.cert
+
+# Session files
+sessions/
+
+# Temporary upload directory
+temp/
+tmp/
+
+# Windows specific
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Mac specific
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Log files
+combined.log
+error.log
+access.log
\ No newline at end of file
diff --git a/luckychit/.gitignore b/luckychit/.gitignore
index b514386..af9fa67 100644
--- a/luckychit/.gitignore
+++ b/luckychit/.gitignore
@@ -136,3 +136,76 @@ node_modules/
 *.bak
 *.backup
 *.tmp
+
+# Firebase configurations (if using Firebase)
+firebase_options.dart
+google-services.json
+GoogleService-Info.plist
+
+# Generated assets and translations
+lib/generated/
+assets/fonts/.uuid
+
+# Test coverage HTML reports
+coverage/html/
+
+# Flutter version manager
+.fvm/
+fvm_config.json
+
+# Riverpod code generation
+*.g.dart
+*.freezed.dart
+
+# Dependency overrides
+pubspec_overrides.yaml
+
+# Xcode user settings
+xcuserdata/
+*.xcworkspacedata
+*.xcuserstate
+
+# Gradle wrapper (optional - some prefer to commit these)
+# android/gradle/wrapper/gradle-wrapper.jar
+# android/gradle/wrapper/gradle-wrapper.properties
+
+# Build artifacts
+*.so
+*.zip
+*.apk
+*.ap_
+*.aab
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+# Windows build output
+windows/flutter/generated_*
+
+# Release APKs and bundles
+app-release.apk
+app-release.aab
+
+# Fastlane (iOS/Android deployment tool)
+**/fastlane/report.xml
+**/fastlane/Preview.html
+**/fastlane/screenshots
+**/fastlane/test_output
+**/fastlane/readme.md
+
+# Localization/Internationalization
+*.arb.json
+lib/l10n/generated/
+
+# VSCode settings (optional)
+.vscode/
+
+# Android Studio navigation
+.navigation/
+
+# Crashlytics
+**/crashlytics-build.properties
+**/com_crashlytics_export_strings.xml
+
+# macOS Finder
+.DS_Store
\ No newline at end of file