diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..5c6f66e
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,35 @@
+root = true
+
+[*]
+indent_style = tab
+indent_size = 4
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+charset = utf-8
+
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{js,ts,svg,md}]
+charset = utf-8
+
+[*.{ts,js}]
+indent_style = tab
+indent_size = 4
+
+[package.json]
+indent_style = space
+indent_size = 2
+
+[*.{sass,scss}]
+indent_style = space
+indent_size = 2
+
+[*.{css,less}]
+indent_style = space
+indent_size = 2
+
+[*.{json,yml,yaml}]
+indent_style = space
diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 0000000..83d0a6a
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,31 @@
+{
+  "env": {
+    "browser": true,
+    "es2022": true,
+    "webextensions": true
+  },
+  "extends": ["eslint:recommended", "@typescript-eslint/recommended"],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module"
+  },
+  "plugins": ["@typescript-eslint"],
+  "rules": {
+    "@typescript-eslint/no-unused-vars": [
+      "error",
+      {
+        "argsIgnorePattern": "^_",
+        "varsIgnorePattern": "^_"
+      }
+    ],
+    "@typescript-eslint/explicit-function-return-type": "warn",
+    "@typescript-eslint/no-explicit-any": "error",
+    "@typescript-eslint/prefer-const": "error",
+    "@typescript-eslint/no-var-requires": "error",
+    "prefer-const": "error",
+    "no-var": "error",
+    "no-console": "warn"
+  },
+  "ignorePatterns": ["dist/", "node_modules/", "*.js"]
+}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
new file mode 100644
index 0000000..bfcc659
--- /dev/null
+++ b/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,71 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+    push:
+        branches: ["main"]
+    pull_request:
+        # The branches below must be a subset of the branches above
+        branches: ["main"]
+    schedule:
+        - cron: "37 13 * * 4"
+
+jobs:
+    analyze:
+        name: Analyze
+        runs-on: ubuntu-latest
+        permissions:
+            actions: read
+            contents: read
+            security-events: write
+
+        strategy:
+            fail-fast: false
+            matrix:
+                language: ["javascript"]
+                # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+                # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v3
+
+            # Initializes the CodeQL tools for scanning.
+            - name: Initialize CodeQL
+              uses: github/codeql-action/init@v2
+              with:
+                  languages: ${{ matrix.language }}
+                  # If you wish to specify custom queries, you can do so here or in a config file.
+                  # By default, queries listed here will override any specified in a config file.
+                  # Prefix the list here with "+" to use these queries and those in the config file.
+
+                  # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+                  # queries: security-extended,security-and-quality
+
+            # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+            # If this step fails, then you should remove it and run the build manually (see below)
+            - name: Autobuild
+              uses: github/codeql-action/autobuild@v2
+
+            # ℹ️ Command-line programs to run using the OS shell.
+            # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+            #   If the Autobuild fails above, remove it and uncomment the following three lines.
+            #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+            # - run: |
+            #   echo "Run, Build Application using script"
+            #   ./location_of_script_within_repo/buildscript.sh
+
+            - name: Perform CodeQL Analysis
+              uses: github/codeql-action/analyze@v2
diff --git a/.gitignore b/.gitignore
index e0400f6..7a21a8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -688,5 +688,7 @@ FodyWeavers.xsd
 dist
 
 tools/syncConfig.js
-tools/deploy.js
-tools/v2.js
\ No newline at end of file
+tools/parse.js
+tools/v2.js
+tools/clean.js
+package-lock.json
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..611cf4f
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,8 @@
+node_modules/
+dist/
+*.log
+.DS_Store
+.vscode/
+.idea/
+*.sass
+*.scss
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..aa3f49e
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,19 @@
+{
+  "semi": true,
+  "trailingComma": "es5",
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "bracketSpacing": true,
+  "arrowParens": "avoid",
+  "endOfLine": "auto",
+  "overrides": [
+    {
+      "files": "*.json",
+      "options": {
+        "parser": "json"
+      }
+    }
+  ]
+}
diff --git a/LICENSE b/LICENSE
index 0404ba7..79f09ef 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2022 Jonas Pfalzgraf
+Copyright (c) 2024 Jonas Pfalzgraf
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index d9c9633..7ed4257 100644
--- a/README.md
+++ b/README.md
@@ -4,35 +4,222 @@
 [![GitHub forks](https://img.shields.io/github/forks/JosunLP/BrowserExtensionTemplate?style=for-the-badge)](https://github.com/JosunLP/BrowserExtensionTemplate/network)
 [![GitHub stars](https://img.shields.io/github/stars/JosunLP/BrowserExtensionTemplate?style=for-the-badge)](https://github.com/JosunLP/BrowserExtensionTemplate/stargazers)
 [![GitHub license](https://img.shields.io/github/license/JosunLP/BrowserExtensionTemplate?style=for-the-badge)](https://github.com/JosunLP/BrowserExtensionTemplate)
-[![Twitter URL](https://img.shields.io/twitter/url?logo=twitter&style=for-the-badge&url=https%3A%2F%2Fgithub.com%2FJosunLP%2FBrowserExtensionTemplate)](https://twitter.com/intent/tweet?text=Look+what+i+found+on+GitHub+%23Developer%2C+%23SoftwareDeveloper%3A&url=https%3A%2F%2Fgithub.com%2FJosunLP%2FBrowserExtensionTemplate)
 [![CodeFactor](https://www.codefactor.io/repository/github/josunlp/browserextensiontemplate/badge?style=for-the-badge)](https://www.codefactor.io/repository/github/josunlp/browserextensiontemplate)
-[![Known Vulnerabilities](https://snyk.io/test/github/JosunLP/BrowserExtensionTemplate/badge.svg?style=for-the-badge)](https://snyk.io/test/github/JosunLP/BrowserExtensionTemplate)
 
 ## Description
 
-A basic template based on SASS and TypeScript to create browser extensions without directly relying on a larger framework.
+A modern, production-ready template for building browser extensions using TypeScript, SASS, and Vite. This template provides a solid foundation with best practices, type safety, and modern development tools.
+
+## Features
+
+- 🚀 **Modern Tech Stack**: TypeScript, SASS, Vite, Bootstrap
+- 🛡️ **Type Safety**: Strict TypeScript configuration with comprehensive error checking
+- 🔧 **Development Tools**: ESLint, Prettier, automated workflows
+- 🎯 **Cross-Browser**: Supports both Chrome (Manifest v3) and Firefox (Manifest v2)
+- 📦 **Component System**: Reusable UI components with type safety
+- 💾 **Session Management**: Robust localStorage-based session handling
+- 🛠️ **Build System**: Optimized Vite configuration with code splitting
+- 🎨 **Modern CSS**: CSS Custom Properties with SASS preprocessing
+- 🔒 **Security**: Content Security Policy and secure coding practices
+- ⚡ **Error Handling**: Comprehensive error boundary system
 
 ## Installation
 
-You can download the source code from [GitHub](https://github.com/JosunLP/BrowserExtensionTemplate). Just copy it in your project and run `npm install` to install the dependencies.
-The basic configuration, wich will sync with `npm run sync` with the `package.json` file and the `manifest.json` file, is in `app.config.json`.
-Alternatively, you can fork the project and run `npm install` in the forked project.
+### Quick Start
+
+```bash
+git clone https://github.com/JosunLP/BrowserExtensionTemplate.git
+cd BrowserExtensionTemplate
+npm install
+```
+
+### Development Setup
+
+```bash
+# Install dependencies
+npm install
+
+# Start development mode with auto-rebuild
+npm run dev
+
+# Type checking
+npm run type-check
+
+# Linting and formatting
+npm run validate
+```
 
 ## Usage
 
-Your sourcecode can be written in the `src` folder. The `public` folder contains static files like images, html and the manifest.json.
-With the `npm run deploy-v3` command you can deploy the extension to the dist folder, ready to be published to the chrome web store.
-With the `npm run deploy-v2` command you can deploy the extension to the dist folder, ready to be published to the firefox web store.
-This is necessary because the firefox web store needs the `manifest.json` file to be present in the version v2.
+### Project Structure
 
-## License
+```bash
+src/
+├── classes/           # Core classes (Session, ErrorBoundary)
+├── components/        # Reusable UI components
+├── sass/             # SASS styles with CSS custom properties
+├── types/            # TypeScript type definitions
+├── app.ts            # Popup entry point
+├── settings.ts       # Options page entry point
+└── background.ts     # Background service worker
 
-This project is licensed under the [MIT license](https://opensource.org/licenses/MIT).
+public/
+├── icons/            # Extension icons
+├── manifest.json     # Extension manifest
+├── popup.html        # Popup HTML template
+└── options.html      # Options page HTML template
+
+tools/                # Build and automation scripts
+```
+
+### Configuration
+
+The main configuration is in `app.config.json`. This file is automatically synchronized with `package.json` and `manifest.json`:
+
+```json
+{
+  "AppData": {
+    "id": "your_extension_id",
+    "name": "Your Extension Name",
+    "version": "1.0.0",
+    "description": "Your extension description"
+  },
+  "htmlTemplatePairs": [
+    {
+      "key": "{{PLACEHOLDER}}",
+      "value": "Replacement Value"
+    }
+  ]
+}
+```
+
+### Build Commands
+
+```bash
+# Development
+npm run dev              # Start development with watch mode
+npm run sync            # Sync configuration files
+
+# Production
+npm run deploy-v3       # Build for Chrome (Manifest v3)
+npm run deploy-v2       # Build for Firefox (Manifest v2)
+
+# Quality Assurance
+npm run validate        # Type check + lint
+npm run lint           # ESLint with auto-fix
+npm run format         # Prettier formatting
+
+# Utilities
+npm run clean          # Clean dist folder
+npm run build-tooling  # Compile TypeScript tools
+```
+
+### Development Workflow
+
+1. **Configure your extension** in `app.config.json`
+2. **Run sync** to update all config files: `npm run sync`
+3. **Start development**: `npm run dev`
+4. **Write your code** in the `src/` directory
+5. **Build for production**: `npm run deploy-v3` or `npm run deploy-v2`
+6. **Load the extension** from the `dist/` folder in your browser
+
+### Session Management
+
+The template includes a robust session management system:
+
+```typescript
+import { Session } from './classes/session';
+
+// Get session instance (async)
+const session = await Session.getInstance();
+
+// Save data
+session.contentTest = 'New value';
+await session.save();
+
+// Reset session
+await Session.reset();
+```
+
+### Error Handling
+
+Built-in error boundary system:
+
+```typescript
+import { ErrorBoundary } from './classes/errorBoundary';
+
+const errorBoundary = ErrorBoundary.getInstance();
+
+// Wrap async functions
+const safeAsyncFunction = errorBoundary.wrapAsync(asyncFunction);
+
+// Add custom error handlers
+errorBoundary.addErrorHandler(error => {
+  console.log('Custom error handling:', error);
+});
+```
+
+### Component System
+
+Type-safe, reusable components:
+
+```typescript
+import { BasicButton } from './components/button';
+
+// Create button
+const button = new BasicButton('primary', 'Click me', 'my-button');
+
+// Render as HTML string
+const htmlString = button.render();
+
+// Or create as DOM element
+const buttonElement = button.createElement();
+```
+
+## Browser Compatibility
+
+- **Chrome**: Manifest v3 (recommended)
+- **Firefox**: Manifest v2 (automatically converted)
+- **Edge**: Manifest v3 compatible
 
 ## Contributing
 
-This project is open source. Feel free to fork and contribute!
+1. Fork the repository
+2. Create a feature branch: `git checkout -b feature/amazing-feature`
+3. Make your changes and ensure tests pass: `npm run validate`
+4. Commit your changes: `git commit -m 'Add amazing feature'`
+5. Push to the branch: `git push origin feature/amazing-feature`
+6. Open a Pull Request
+
+## Development Guidelines
+
+- Follow TypeScript best practices
+- Use meaningful variable and function names
+- Add proper error handling
+- Write self-documenting code
+- Follow the established project structure
+- Run `npm run validate` before committing
+
+## License
+
+This project is licensed under the [MIT License](https://opensource.org/licenses/MIT).
 
 ## Author
 
-Jonas Pfalzgraf
+**_Jonas Pfalzgraf_**
+
+- Email: <info@josunlp.de>
+- GitHub: [@JosunLP](https://github.com/JosunLP)
+
+## Changelog
+
+### v0.0.1 (Current)
+
+- ✨ Modern TypeScript setup with strict type checking
+- 🛡️ Comprehensive error handling system
+- 🎨 CSS Custom Properties with SASS
+- 🔧 ESLint and Prettier configuration
+- 📦 Optimized Vite build system
+- 🚀 Cross-browser compatibility (Chrome/Firefox)
+- 💾 Robust session management
+- 🎯 Component-based architecture
diff --git a/app.config.json b/app.config.json
index e5ceac0..96a13dc 100644
--- a/app.config.json
+++ b/app.config.json
@@ -1,29 +1,29 @@
 {
-    "AppData": {
-        "id": "browser_extension_template",
-        "name": "Browser Extension Template",
-        "version": "0.0.1",
-        "description": "A basic template based on SASS and TypeScript to create browser extensions without directly relying on a larger framework.",
-        "repository": {
-            "type": "git",
-            "url": "git+ssh://git@github.com:JosunLP/BrowserExtensionTemplate.git"
-        },
-        "license": "MIT",
-        "homepage": "https://github.com/JosunLP/BrowserExtensionTemplate",
-        "bugs": {
-            "url": "https://github.com/JosunLP/BrowserExtensionTemplate/issues"
-        },
-        "authors": [
-            {
-                "name": "Jonas Pfalzgraf",
-                "email": "info@josunlp.de"
-            }
-        ]
+  "AppData": {
+    "id": "browser_extension_template",
+    "name": "Browser Extension Template",
+    "version": "0.0.1",
+    "description": "A basic template based on SASS and TypeScript to create browser extensions without directly relying on a larger framework.",
+    "repository": {
+      "type": "git",
+      "url": "git+ssh://git@github.com:JosunLP/BrowserExtensionTemplate.git"
     },
-    "htmlTemplatePairs": [
-        {
-            "key": "{{BET}}",
-            "value": "Browser Extension Template"
-        }
+    "license": "MIT",
+    "homepage": "https://github.com/JosunLP/BrowserExtensionTemplate",
+    "bugs": {
+      "url": "https://github.com/JosunLP/BrowserExtensionTemplate/issues"
+    },
+    "authors": [
+      {
+        "name": "Jonas Pfalzgraf",
+        "email": "info@josunlp.de"
+      }
     ]
-}
\ No newline at end of file
+  },
+  "htmlTemplatePairs": [
+    {
+      "key": "{{BET}}",
+      "value": "Browser Extension Template"
+    }
+  ]
+}
diff --git a/eslint.config.js b/eslint.config.js
new file mode 100644
index 0000000..0a5419c
--- /dev/null
+++ b/eslint.config.js
@@ -0,0 +1,55 @@
+import js from '@eslint/js';
+import tsPlugin from '@typescript-eslint/eslint-plugin';
+import tsParser from '@typescript-eslint/parser';
+
+export default [
+  {
+    ignores: ['dist/', 'node_modules/', '**/*.js'],
+  },
+  js.configs.recommended,
+  {
+    files: ['src/**/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+      ecmaVersion: 'latest',
+      sourceType: 'module',
+      globals: {
+        chrome: 'readonly',
+        browser: 'readonly',
+        console: 'readonly',
+        document: 'readonly',
+        window: 'readonly',
+        localStorage: 'readonly',
+        sessionStorage: 'readonly',
+        HTMLElement: 'readonly',
+        HTMLDivElement: 'readonly',
+        HTMLButtonElement: 'readonly',
+        HTMLInputElement: 'readonly',
+        setTimeout: 'readonly',
+        clearTimeout: 'readonly',
+        crypto: 'readonly',
+        Error: 'readonly',
+        JSON: 'readonly',
+        Date: 'readonly',
+        String: 'readonly',
+      },
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+    },
+    rules: {
+      ...tsPlugin.configs.recommended.rules,
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+        },
+      ],
+      '@typescript-eslint/no-explicit-any': 'error',
+      'prefer-const': 'error',
+      'no-var': 'error',
+      'no-console': 'off',
+    },
+  },
+];
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index 9c490ed..0000000
--- a/package-lock.json
+++ /dev/null
@@ -1,459 +0,0 @@
-{
-  "name": "browser_extension_template",
-  "version": "1.0.0",
-  "lockfileVersion": 2,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "browser_extension_template",
-      "version": "1.0.0",
-      "license": "MIT",
-      "dependencies": {
-        "friendly-helper": "^1.7.1"
-      },
-      "devDependencies": {
-        "@types/node": "^18.7.4",
-        "sass": "^1.39.0",
-        "typescript": "^4.2.4"
-      }
-    },
-    "node_modules/@types/aes-js": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/@types/aes-js/-/aes-js-3.1.1.tgz",
-      "integrity": "sha512-SDSGgXT3LRCH6qMWk8OHT1vLSVNuHNvCpKCx2/TYtQMbMGGgxJC9fspwSkQjqzRagrWnCrxuLL3jMNXLXHHvSw=="
-    },
-    "node_modules/@types/node": {
-      "version": "18.7.4",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.7.4.tgz",
-      "integrity": "sha512-RzRcw8c0B8LzryWOR4Wj7YOTFXvdYKwvrb6xQQyuDfnlTxwYXGCV5RZ/TEbq5L5kn+w3rliHAUyRcG1RtbmTFg==",
-      "dev": true
-    },
-    "node_modules/aes-js": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.1.2.tgz",
-      "integrity": "sha512-e5pEa2kBnBOgR4Y/p20pskXI74UEz7de8ZGVo58asOtvSVG5YAbJeELPZxOmt+Bnz3rX753YKhfIn4X4l1PPRQ=="
-    },
-    "node_modules/anymatch": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.2.tgz",
-      "integrity": "sha512-P43ePfOAIupkguHUycrc4qJ9kz8ZiuOUijaETwX7THt0Y/GNK7v0aa8rY816xWjZ7rJdA5XdMcpVFTKMq+RvWg==",
-      "dev": true,
-      "dependencies": {
-        "normalize-path": "^3.0.0",
-        "picomatch": "^2.0.4"
-      },
-      "engines": {
-        "node": ">= 8"
-      }
-    },
-    "node_modules/binary-extensions": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.2.0.tgz",
-      "integrity": "sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA==",
-      "dev": true,
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/braces": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-      "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
-      "dev": true,
-      "dependencies": {
-        "fill-range": "^7.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/chokidar": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.3.tgz",
-      "integrity": "sha512-Dr3sfKRP6oTcjf2JmUmFJfeVMvXBdegxB0iVQ5eb2V10uFJUCAS8OByZdVAyVb8xXNz3GjjTgj9kLWsZTqE6kw==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "individual",
-          "url": "https://paulmillr.com/funding/"
-        }
-      ],
-      "dependencies": {
-        "anymatch": "~3.1.2",
-        "braces": "~3.0.2",
-        "glob-parent": "~5.1.2",
-        "is-binary-path": "~2.1.0",
-        "is-glob": "~4.0.1",
-        "normalize-path": "~3.0.0",
-        "readdirp": "~3.6.0"
-      },
-      "engines": {
-        "node": ">= 8.10.0"
-      },
-      "optionalDependencies": {
-        "fsevents": "~2.3.2"
-      }
-    },
-    "node_modules/fill-range": {
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diff --git a/package.json b/package.json
index 76ea2e9..1bfa990 100644
--- a/package.json
+++ b/package.json
@@ -4,28 +4,44 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "deploy-v3": "npm run build-tooling && npm run sync && node ./tools/deploy.js && npm run build-js && npm run build-css",
+    "deploy-v3": "npm run clean && npm run build-tooling && npm run sync && npm run build && npm run parse",
     "deploy-v2": "npm run deploy-v3 && node ./tools/v2.js",
-    "build-js": "tsc -p tsconfig.json",
-    "build-css": "sass ./src/sass/:./dist/css/",
-    "build-tooling": "tsc ./tools/v2.ts --target esnext --module esnext --lib ESNext && tsc ./tools/syncConfig.ts --target esnext --module esnext --lib ESNext && tsc ./tools/deploy.ts --target esnext --module esnext --lib ESNext",
-    "watch-ts": "tsc -w -p tsconfig.json",
-    "watch-sass": "sass --watch ./src/sass/:./dist/css/",
-    "sync": "npm run build-tooling && node ./tools/syncConfig.js"
+    "build": "vite build",
+    "build-tooling": "tsc --project ./tooling.tsconfig.json",
+    "watch": "vite build --watch",
+    "sync": "npm run build-tooling && node ./tools/syncConfig.js",
+    "parse": "node ./tools/parse.js",
+    "clean": "npx rimraf ./dist/",
+    "dev": "npm run sync && npm run watch",
+    "lint": "eslint src/**/*.ts --fix",
+    "format": "prettier --write src/**/*.{ts,json}",
+    "format:ts": "prettier --write src/**/*.ts",
+    "format:json": "prettier --write src/**/*.json",
+    "type-check": "tsc --noEmit",
+    "validate": "npm run type-check && npm run lint",
+    "prepare": "npm run validate && npm run build-tooling"
   },
   "devDependencies": {
-    "@types/node": "^18.7.4",
-    "sass": "^1.39.0",
-    "typescript": "^4.2.4"
+    "@eslint/eslintrc": "^3.3.1",
+    "@eslint/js": "^9.30.1",
+    "@types/chrome": "^0.0.268",
+    "@types/node": "^20.13.0",
+    "@typescript-eslint/eslint-plugin": "^8.36.0",
+    "@typescript-eslint/parser": "^8.36.0",
+    "@webcomponents/webcomponentsjs": "^2.8.0",
+    "eslint": "^9.30.1",
+    "prettier": "^3.6.2",
+    "rimraf": "^5.0.10",
+    "sass": "^1.77.4",
+    "typescript": "^5.8.3",
+    "vite": "^7.0.4",
+    "vite-tsconfig-paths": "^4.3.2"
   },
   "browserslist": [
     "> 1%",
     "last 2 versions",
     "not dead"
   ],
-  "dependencies": {
-    "friendly-helper": "^1.7.1"
-  },
   "authors": [
     {
       "name": "Jonas Pfalzgraf",
@@ -41,5 +57,9 @@
   },
   "bugs": {
     "url": "https://github.com/JosunLP/BrowserExtensionTemplate/issues"
+  },
+  "dependencies": {
+    "@webcomponents/custom-elements": "^1.6.0",
+    "bootstrap": "^5.3.3"
   }
 }
\ No newline at end of file
diff --git a/public/manifest.json b/public/manifest.json
index 7b2997d..6d17cfa 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -14,19 +14,28 @@
     "default_title": "BrowserExtensionTemplate",
     "default_popup": "popup.html"
   },
+  "options_ui": {
+    "page": "options.html",
+    "open_in_tab": false
+  },
   "permissions": [
+    "storage",
     "notifications"
   ],
   "background": {
-    "service_worker": "js/background.js"
+    "service_worker": "background.js"
   },
-  "commands": {
-    "_execute_browser_action": {
-      "suggested_key": {
-        "default": "Ctrl+Shift+F",
-        "mac": "MacCtrl+Shift+F"
-      },
-      "description": "Opens popup.html"
+  "content_security_policy": {
+    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline';"
+  },
+  "web_accessible_resources": [
+    {
+      "resources": [
+        "icons/*.png"
+      ],
+      "matches": [
+        "<all_urls>"
+      ]
     }
-  }
+  ]
 }
\ No newline at end of file
diff --git a/public/options.html b/public/options.html
new file mode 100644
index 0000000..c9a0e6b
--- /dev/null
+++ b/public/options.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width,initial-scale=1.0" />
+    <link rel="icon" href="./favicon.ico" />
+    <title>{{BET}} Options</title>
+  </head>
+  <body>
+    <noscript>
+      <strong
+        >We're sorry but {{BET}} doesn't work properly without JavaScript enabled. Please enable it
+        to continue.</strong
+      >
+    </noscript>
+    <div id="app">
+      <img src="./icons/icon128.png" alt="Logo" class="logo" />
+      <h1>Settings</h1>
+      <div id="settings"></div>
+    </div>
+    <footer>
+      <script type="module" src="./settings.js"></script>
+    </footer>
+  </body>
+</html>
diff --git a/public/popup.html b/public/popup.html
index e467626..a59f164 100644
--- a/public/popup.html
+++ b/public/popup.html
@@ -1,26 +1,25 @@
-<!DOCTYPE html>
-<html lang="">
+<!doctype html>
+<html lang="en">
   <head>
-    <meta charset="utf-8">
-    <meta http-equiv="X-UA-Compatible" content="IE=edge">
-    <meta name="viewport" content="width=device-width,initial-scale=1.0">
-    <link rel="icon" href="./favicon.ico">
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width,initial-scale=1.0" />
+    <link rel="icon" href="./favicon.ico" />
     <title>{{BET}}</title>
-    <link rel="stylesheet" href="css/app.css">
   </head>
   <body>
     <noscript>
-      <strong>We're sorry but {{BET}} doesn't work properly without JavaScript enabled. Please enable it to
-        continue.</strong>
+      <strong
+        >We're sorry but {{BET}} doesn't work properly without JavaScript enabled. Please enable it
+        to continue.</strong
+      >
     </noscript>
     <div id="app">
-      <img src="./icons/icon128.png" class="logo" />
+      <img src="./icons/icon128.png" alt="Logo" class="logo" />
       <h1>{{BET}}</h1>
-      <div id="content">
-      </div>
+      <div id="content"></div>
     </div>
     <footer>
-      <script type="module" src="./js/app.js"></script>
+      <script type="module" src="./app.js"></script>
     </footer>
   </body>
 </html>
diff --git a/src/app.ts b/src/app.ts
index 27095ba..8157802 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -1,24 +1,60 @@
+import { Session } from './classes/session';
+import './sass/app.sass';
+
 class App {
+  private static readonly CONTENT_ENTRY = 'content';
+  private session: Session | null = null;
 
-    private static contentEntry: string = "content"
+  constructor() {
+    this.init();
+  }
 
-    constructor() {
-        this.drawData()
-        this.main()
+  private async init(): Promise<void> {
+    try {
+      this.session = await Session.getInstance();
+      await this.drawData();
+      await this.main();
+    } catch (error) {
+      console.error('Failed to initialize app:', error);
+      this.handleError('Failed to initialize application');
+    }
+  }
+
+  private async main(): Promise<void> {
+    console.log('Hello World');
+  }
+
+  private async drawData(): Promise<void> {
+    if (!this.session) {
+      throw new Error('Session not initialized');
     }
 
-    async main(): Promise<void> {
-        
+    const contentRoot = document.getElementById(App.CONTENT_ENTRY) as HTMLDivElement | null;
+    if (!contentRoot) {
+      throw new Error(`Element with id '${App.CONTENT_ENTRY}' not found`);
     }
 
-    async drawData(): Promise<void> {
-        const contentRoot = <HTMLDivElement>document.getElementById(App.contentEntry)
-        const body = document.createElement("div")
-        const title = document.createElement("h1")
-        title.innerText = "Hello World"
-        body.appendChild(title)
-        contentRoot.appendChild(body)
+    const body = document.createElement('div');
+    body.className = 'app-content';
+
+    const title = document.createElement('h1');
+    title.innerText = 'Hello World';
+
+    const text = document.createElement('p');
+    text.innerText = this.session.contentTest;
+
+    body.appendChild(title);
+    body.appendChild(text);
+    contentRoot.appendChild(body);
+  }
+
+  private handleError(message: string): void {
+    console.error(message);
+    const contentRoot = document.getElementById(App.CONTENT_ENTRY);
+    if (contentRoot) {
+      contentRoot.innerHTML = `<div class="error-message">${message}</div>`;
     }
+  }
 }
 
-new App();
\ No newline at end of file
+new App();
diff --git a/src/background.ts b/src/background.ts
index f3af3fa..635339b 100644
--- a/src/background.ts
+++ b/src/background.ts
@@ -1,13 +1,82 @@
-
-class Background {
-
-    constructor() {
-        this.main();
-    }
-
-    async main(): Promise<void> {
-
-    }
+interface ExtensionMessage {
+  type: string;
+  payload?: unknown;
 }
 
-new Background();
\ No newline at end of file
+class Background {
+  constructor() {
+    this.init();
+  }
+
+  private async init(): Promise<void> {
+    try {
+      await this.setupEventListeners();
+      await this.main();
+      console.log('Background service worker initialized');
+    } catch (error) {
+      console.error('Failed to initialize background service worker:', error);
+    }
+  }
+
+  private async setupEventListeners(): Promise<void> {
+    // Install event
+    chrome.runtime.onInstalled.addListener(details => {
+      console.log('Extension installed:', details.reason);
+      this.handleInstall(details.reason);
+    });
+
+    // Message handling
+    chrome.runtime.onMessage.addListener((message: ExtensionMessage, sender, sendResponse) => {
+      this.handleMessage(message, sender)
+        .then(response => sendResponse(response))
+        .catch(error => {
+          console.error('Error handling message:', error);
+          sendResponse({ error: error.message });
+        });
+      return true; // Indicates we will send a response asynchronously
+    });
+
+    // Startup event
+    chrome.runtime.onStartup.addListener(() => {
+      console.log('Extension started');
+    });
+  }
+
+  private async handleInstall(reason: string): Promise<void> {
+    if (reason === 'install') {
+      // First time installation
+      console.log('Extension installed for the first time');
+    } else if (reason === 'update') {
+      // Extension updated
+      console.log('Extension updated');
+    }
+  }
+
+  private async handleMessage(
+    message: ExtensionMessage,
+    sender: chrome.runtime.MessageSender
+  ): Promise<unknown> {
+    console.log('Received message:', message, 'from:', sender);
+
+    switch (message.type) {
+      case 'ping':
+        return { type: 'pong', timestamp: Date.now() };
+
+      case 'getVersion':
+        return {
+          type: 'version',
+          version: chrome.runtime.getManifest().version,
+        };
+
+      default:
+        throw new Error(`Unknown message type: ${message.type}`);
+    }
+  }
+
+  private async main(): Promise<void> {
+    // Main background logic can be implemented here
+    // This method is called after initialization
+  }
+}
+
+new Background();
diff --git a/src/classes/errorBoundary.ts b/src/classes/errorBoundary.ts
new file mode 100644
index 0000000..8e46dd2
--- /dev/null
+++ b/src/classes/errorBoundary.ts
@@ -0,0 +1,99 @@
+export class ErrorBoundary {
+  private static instance: ErrorBoundary;
+  private errorHandlers: Array<(error: Error) => void> = [];
+
+  private constructor() {
+    this.setupGlobalErrorHandlers();
+  }
+
+  public static getInstance(): ErrorBoundary {
+    if (!ErrorBoundary.instance) {
+      ErrorBoundary.instance = new ErrorBoundary();
+    }
+    return ErrorBoundary.instance;
+  }
+
+  private setupGlobalErrorHandlers(): void {
+    // Handle uncaught errors
+    window.addEventListener('error', event => {
+      this.handleError(new Error(event.message), {
+        filename: event.filename,
+        lineno: event.lineno,
+        colno: event.colno,
+      });
+    });
+
+    // Handle unhandled promise rejections
+    window.addEventListener('unhandledrejection', event => {
+      this.handleError(
+        event.reason instanceof Error ? event.reason : new Error(String(event.reason)),
+        { type: 'unhandledrejection' }
+      );
+    });
+  }
+
+  public addErrorHandler(handler: (error: Error) => void): void {
+    this.errorHandlers.push(handler);
+  }
+
+  public removeErrorHandler(handler: (error: Error) => void): void {
+    const index = this.errorHandlers.indexOf(handler);
+    if (index > -1) {
+      this.errorHandlers.splice(index, 1);
+    }
+  }
+
+  public handleError(error: Error, context?: Record<string, unknown>): void {
+    console.error('Error caught by ErrorBoundary:', error, context);
+
+    // Call all registered error handlers
+    this.errorHandlers.forEach(handler => {
+      try {
+        handler(error);
+      } catch (handlerError) {
+        console.error('Error in error handler:', handlerError);
+      }
+    });
+
+    // Send to background script if available
+    if (chrome.runtime) {
+      chrome.runtime
+        .sendMessage({
+          type: 'error',
+          payload: {
+            message: error.message,
+            stack: error.stack,
+            context,
+            timestamp: Date.now(),
+          },
+        })
+        .catch(() => {
+          // Ignore errors when sending to background
+        });
+    }
+  }
+
+  public wrapAsync<T extends unknown[], R>(
+    fn: (...args: T) => Promise<R>
+  ): (...args: T) => Promise<R> {
+    return async (...args: T): Promise<R> => {
+      try {
+        return await fn(...args);
+      } catch (error) {
+        this.handleError(error instanceof Error ? error : new Error(String(error)));
+        throw error;
+      }
+    };
+  }
+
+  public wrapSync<T extends unknown[], R>(fn: (...args: T) => R): (...args: T) => R {
+    return (...args: T): R => {
+      try {
+        return fn(...args);
+      } catch (error) {
+        this.handleError(error instanceof Error ? error : new Error(String(error)));
+        throw error;
+      }
+    };
+  }
+}
diff --git a/src/classes/session.ts b/src/classes/session.ts
new file mode 100644
index 0000000..9c9c472
--- /dev/null
+++ b/src/classes/session.ts
@@ -0,0 +1,109 @@
+interface SessionData {
+  sessionId: string;
+  contentTest: string;
+}
+
+interface StorageService {
+  save(key: string, data: unknown): Promise<void>;
+  load<T>(key: string): Promise<T | null>;
+  remove(key: string): Promise<void>;
+}
+
+class LocalStorageService implements StorageService {
+  async save(key: string, data: unknown): Promise<void> {
+    try {
+      localStorage.setItem(key, JSON.stringify(data));
+    } catch (error) {
+      console.error('Failed to save to localStorage:', error);
+      throw new Error('Storage operation failed');
+    }
+  }
+
+  async load<T>(key: string): Promise<T | null> {
+    try {
+      const item = localStorage.getItem(key);
+      return item ? (JSON.parse(item) as T) : null;
+    } catch (error) {
+      console.error('Failed to load from localStorage:', error);
+      return null;
+    }
+  }
+
+  async remove(key: string): Promise<void> {
+    try {
+      localStorage.removeItem(key);
+    } catch (error) {
+      console.error('Failed to remove from localStorage:', error);
+      throw new Error('Storage operation failed');
+    }
+  }
+}
+
+export class Session implements SessionData {
+  private static instance: Session | null = null;
+  private static readonly STORAGE_KEY = 'browser_extension_session';
+  private static readonly storageService: StorageService = new LocalStorageService();
+
+  public readonly sessionId: string;
+  public contentTest: string;
+
+  private constructor(data?: Partial<SessionData>) {
+    this.sessionId = data?.sessionId ?? crypto.randomUUID();
+    this.contentTest = data?.contentTest ?? 'This is a simple example of a web application';
+  }
+
+  public static async getInstance(): Promise<Session> {
+    if (!Session.instance) {
+      await Session.loadOrCreate();
+    }
+    return Session.instance!;
+  }
+
+  private static async loadOrCreate(): Promise<void> {
+    try {
+      const savedData = await Session.storageService.load<SessionData>(Session.STORAGE_KEY);
+      Session.instance = new Session(savedData ?? undefined);
+      await Session.instance.save();
+    } catch (error) {
+      console.error('Failed to load session, creating new one:', error);
+      Session.instance = new Session();
+      await Session.instance.save();
+    }
+  }
+
+  public async save(): Promise<void> {
+    try {
+      const data: SessionData = {
+        sessionId: this.sessionId,
+        contentTest: this.contentTest,
+      };
+      await Session.storageService.save(Session.STORAGE_KEY, data);
+    } catch (error) {
+      console.error('Failed to save session:', error);
+      throw error;
+    }
+  }
+
+  public static async reset(): Promise<void> {
+    try {
+      await Session.storageService.remove(Session.STORAGE_KEY);
+      Session.instance = new Session();
+      await Session.instance.save();
+
+      // Reload page only if we're in a browser environment
+      if (typeof window !== 'undefined' && window.location) {
+        window.location.reload();
+      }
+    } catch (error) {
+      console.error('Failed to reset session:', error);
+      throw error;
+    }
+  }
+
+  public toJSON(): SessionData {
+    return {
+      sessionId: this.sessionId,
+      contentTest: this.contentTest,
+    };
+  }
+}
diff --git a/src/components/button.ts b/src/components/button.ts
new file mode 100644
index 0000000..b023eaa
--- /dev/null
+++ b/src/components/button.ts
@@ -0,0 +1,96 @@
+import { customButton } from '../types/buttonType';
+
+export interface ButtonConfig {
+  type: customButton;
+  text: string;
+  id?: string | undefined;
+  className?: string | undefined;
+  disabled?: boolean | undefined;
+  onClick?: (() => void) | undefined;
+}
+
+export class BasicButton {
+  private readonly config: ButtonConfig;
+
+  constructor(type: customButton, text: string, id?: string, className?: string) {
+    this.config = {
+      type,
+      text,
+      id,
+      className,
+    };
+  }
+
+  public render(): string {
+    const button = document.createElement('button');
+    button.type = 'button';
+    button.textContent = this.config.text;
+    button.className = this.getBootstrapClass();
+
+    if (this.config.id) {
+      button.id = this.config.id;
+    }
+
+    if (this.config.className) {
+      button.className += ` ${this.config.className}`;
+    }
+
+    if (this.config.disabled) {
+      button.disabled = true;
+    }
+
+    return button.outerHTML;
+  }
+
+  public createElement(): HTMLButtonElement {
+    const button = document.createElement('button');
+    button.type = 'button';
+    button.textContent = this.config.text;
+    button.className = this.getBootstrapClass();
+
+    if (this.config.id) {
+      button.id = this.config.id;
+    }
+
+    if (this.config.className) {
+      button.className += ` ${this.config.className}`;
+    }
+
+    if (this.config.disabled) {
+      button.disabled = true;
+    }
+
+    if (this.config.onClick) {
+      button.addEventListener('click', this.config.onClick);
+    }
+
+    return button;
+  }
+
+  private getBootstrapClass(): string {
+    const typeMap: Record<customButton, string> = {
+      neutral: 'btn btn-secondary',
+      primary: 'btn btn-primary',
+      secondary: 'btn btn-secondary',
+      success: 'btn btn-success',
+      danger: 'btn btn-danger',
+      warning: 'btn btn-warning',
+      info: 'btn btn-info',
+      light: 'btn btn-light',
+      dark: 'btn btn-dark',
+    };
+
+    return typeMap[this.config.type] ?? 'btn btn-primary';
+  }
+
+  public static create(config: ButtonConfig): BasicButton {
+    const button = new BasicButton(config.type, config.text, config.id, config.className);
+    if (config.disabled !== undefined) {
+      button.config.disabled = config.disabled;
+    }
+    if (config.onClick !== undefined) {
+      button.config.onClick = config.onClick;
+    }
+    return button;
+  }
+}
diff --git a/src/sass/_mixin.sass b/src/sass/_mixin.sass
index 0e4c93a..ddd1d41 100644
--- a/src/sass/_mixin.sass
+++ b/src/sass/_mixin.sass
@@ -1,84 +1,93 @@
 @import "root"
 
 @mixin respond-to($media)
-	@if $media == handhelds
-		@media only screen and (max-device-width: 40rem)
-			@content
+  @if $media == handhelds
+    @media only screen and (max-device-width: 40rem)
+      @content
 
-	@else if $media == medium-screens
-		@media only screen and (min-device-width: 40rem)
-			@content
+  @else if $media == medium-screens
+    @media only screen and (min-device-width: 40rem)
+      @content
 
-	@else if $media == wide-screens
-		@media only screen and (min-width: 1000px)
-			@content
+  @else if $media == wide-screens
+    @media only screen and (min-width: 1000px)
+      @content
 
 @mixin partialButton
-	button
-		width: 100% !important
-		height: 100% !important
-		text-align: center !important
-		margin: 0 !important
+  width: 5rem !important
+  height: 2rem !important
+  text-align: center !important
+  margin: 0.5rem !important
+  border-color: $seccond-color !important
+  border-radius: 0.5rem !important
 
-		@include respond-to(handhelds)
-			font-size: 3rem
+  @include respond-to(handhelds)
+    font-size: 3rem
 
-		@include respond-to(medium-screens)
-			font-size: 1.5rem
+    @include respond-to(medium-screens)
+      font-size: 1.5rem
 
 @mixin hoverMe
-	&:hover
-		button
-			color: grey !important
+  &:hover
+    button
+      color: grey !important
 
 @mixin shadow
-	box-shadow: 0px 0px 30px silver
+  box-shadow: 0px 0px 30px silver
 
 @mixin noselect
-	-webkit-touch-callout: none
-	-webkit-user-select: none
-	-khtml-user-select: none
-	-moz-user-select: none
-	-ms-user-select: none
-	user-select: none
-	pointer-events: none
+  -webkit-touch-callout: none
+  -webkit-user-select: none
+  -khtml-user-select: none
+  -moz-user-select: none
+  -ms-user-select: none
+  user-select: none
+  pointer-events: none
+
+.form-group
+  margin-left: 2rem
+  margin-right: 2rem
+  margin-bottom: 0.5rem
+  flex-wrap: wrap
+  justify-content: center
+  display: flex
 
 @mixin formBasic
-	display: block
-	padding: 2rem
-	background: $background-color-content
-	border-radius: 0.7rem
-	min-height: 20rem
-	margin: auto
-	margin-top: 2rem
-	margin-bottom: 2rem
-	@include shadow
+  display: block
+  padding: 2rem
+  background: $background-color-content
+  border-radius: 0.7rem
+  min-height: 20rem
+  margin: auto
+  margin-top: 2rem
+  margin-bottom: 2rem
+  @include shadow
 
-	@include respond-to(handhelds)
-		font-size: 2.5em
-		margin-left: -0.8em
-		margin-right: -0.8em
-		border-radius: 0
+  @include respond-to(handhelds)
+    font-size: 2.5em
+    margin-left: -0.8em
+    margin-right: -0.8em
+    border-radius: 0
 
-	@include respond-to(medium-screens)
-		max-width: 40rem
+  @include respond-to(medium-screens)
+    max-width: 40rem
 
-	@include respond-to(wide-screens)
-		max-width: 40rem
+  @include respond-to(wide-screens)
+    max-width: 40rem
 
-	input
-		@include respond-to(handhelds)
-			font-size: 3rem
-			border-radius: 0.5rem
+  input
+    @include respond-to(handhelds)
+      font-size: 3rem
+      border-radius: 0.5rem
 
-	.check
-		position: static
-		@include respond-to(handhelds)
-			width: 2rem !important
-			height: 2rem !important
+  .check
+    position: static
+    @include respond-to(handhelds)
+      width: 2rem !important
+      height: 2rem !important
 
-	button
-		@include respond-to(handhelds)
-			font-size: 3rem
-			padding: 1rem
-			border-radius: 1rem
+  button
+    @include respond-to(handhelds)
+      font-size: 3rem
+      padding: 1rem
+      border-radius: 1rem
diff --git a/src/sass/_root.sass b/src/sass/_root.sass
index edabad7..e96d116 100644
--- a/src/sass/_root.sass
+++ b/src/sass/_root.sass
@@ -1,8 +1,64 @@
-$main-font: 'Ubuntu', 'Staatliches'
-$main-font-color: white
-$main-font-color-hover: lightgrey
-$main-uschrift-font: 'Ubuntu', Arial
-$seccond-color: lightgrey
-$background-color: rgb(119, 178, 255)
-$background-color-content: rgb(198, 223, 255)
-$logo-image: url('../icons/icon128.png')
+// CSS Custom Properties for theming support
+:root
+  --main-font: 'Ubuntu', 'Segoe UI', 'Roboto', sans-serif
+  --main-font-color: #ffffff
+  --main-font-color-hover: #f8f9fa
+  --main-font-color-focus: #e9ecef
+  --main-font-color-disabled: #6c757d
+  --main-font-color-active: #f8f9fa
+
+  --primary-color: #007bff
+  --primary-color-hover: #0056b3
+  --primary-color-focus: #004085
+  --primary-color-disabled: #6c757d
+  --primary-color-active: #004085
+
+  --secondary-color: #6c757d
+  --secondary-color-hover: #545b62
+  --secondary-color-focus: #4e555b
+  --secondary-color-disabled: #adb5bd
+  --secondary-color-active: #4e555b
+
+  --background-color: #77B2FF
+  --background-color-content: #c6dfff
+  --background-color-content-hover: #b3d7ff
+  --background-color-content-focus: #9fcdff
+  --background-color-content-active: #8cc4ff
+  --background-color-content-disabled: #e9ecef
+
+  --shadow-color: rgba(0, 0, 0, 0.1)
+  --border-radius: 0.375rem
+  --transition-duration: 0.15s
+  --font-size-base: 1rem
+  --line-height-base: 1.5
+
+// SASS Variables (for backwards compatibility)
+$main-font: var(--main-font)
+$main-font-color: var(--main-font-color)
+$main-font-color-hover: var(--main-font-color-hover)
+$main-font-color-focus: var(--main-font-color-focus)
+$main-font-color-disabled: var(--main-font-color-disabled)
+$main-font-color-active: var(--main-font-color-active)
+
+$primary-color: var(--primary-color)
+$primary-color-hover: var(--primary-color-hover)
+$primary-color-focus: var(--primary-color-focus)
+$primary-color-disabled: var(--primary-color-disabled)
+$primary-color-active: var(--primary-color-active)
+
+$secondary-color: var(--secondary-color)
+$secondary-color-hover: var(--secondary-color-hover)
+$secondary-color-focus: var(--secondary-color-focus)
+$secondary-color-disabled: var(--secondary-color-disabled)
+$secondary-color-active: var(--secondary-color-active)
+
+$background-color: var(--background-color)
+$background-color-content: var(--background-color-content)
+$background-color-content-hover: var(--background-color-content-hover)
+$background-color-content-focus: var(--background-color-content-focus)
+$background-color-content-active: var(--background-color-content-active)
+$background-color-content-disabled: var(--background-color-content-disabled)
+
+$shadow-color: var(--shadow-color)
+$border-radius: var(--border-radius)
+$transition-duration: var(--transition-duration)
diff --git a/src/sass/app.sass b/src/sass/app.sass
index 0b05a95..c0c29d1 100644
--- a/src/sass/app.sass
+++ b/src/sass/app.sass
@@ -2,40 +2,50 @@
 @import 'mixin'
 @import 'content'
 
+// Bootstrap with legacy import (suppressed warnings via Vite config)
+@import "../../node_modules/bootstrap/scss/bootstrap"
+
 body
-    height: 30rem
-    width: 30rem
-    background-color: $background-color
-    text-align: center
+  height: 30rem
+  width: 30rem
+  background-color: $background-color
+  text-align: center
+  margin: auto
+  padding: 1rem
+  color: $main-font-color
+
+  p
+    font-size: 1rem
+    font-weight: bold
     margin: auto
     padding: auto
     color: $main-font-color
-
-    @include partialButton
+    text-align: center
+    font-family: 'Roboto', sans-serif
 
 h1, h2
-    @include noselect
+  @include noselect
 
 form
-    @include formBasic
+  @include formBasic
 
 .logo
-    width: 5rem
-    height: auto
-    padding-top: 2rem
-    @include noselect
+  width: 5rem
+  height: auto
+  padding-top: 2rem
+  @include noselect
 
 svg
-    @include noselect
+  @include noselect
 
 table
-    color: $main-font-color !important
-    
-    th
-        @include noselect
+  color: $main-font-color !important
+
+  th
+    @include noselect
 
 a
-    color: $main-font-color
+  color: $main-font-color
 
-    &:hover
-        color: $background-color-content
\ No newline at end of file
+  &:hover
+    color: $background-color-content
diff --git a/src/settings.ts b/src/settings.ts
new file mode 100644
index 0000000..0f08c73
--- /dev/null
+++ b/src/settings.ts
@@ -0,0 +1,120 @@
+import { Session } from './classes/session';
+import { BasicButton } from './components/button';
+import './sass/app.sass';
+
+class Settings {
+  private session: Session | null = null;
+
+  constructor() {
+    this.init();
+  }
+
+  private async init(): Promise<void> {
+    try {
+      this.session = await Session.getInstance();
+      await this.renderSettings();
+    } catch (error) {
+      console.error('Failed to initialize settings:', error);
+      this.handleError('Failed to load settings');
+    }
+  }
+
+  private async renderSettings(): Promise<void> {
+    if (!this.session) {
+      throw new Error('Session not initialized');
+    }
+
+    const settingsElement = document.getElementById('settings') as HTMLDivElement | null;
+    if (!settingsElement) {
+      throw new Error('Settings element not found');
+    }
+
+    const saveButton = new BasicButton('success', 'Save', 'saveSettings').render();
+
+    settingsElement.innerHTML = `
+            <div class="form-group">
+                <label for="contentTest">Content Test</label>
+                <input
+                    type="text"
+                    class="form-control text-input"
+                    id="contentTest"
+                    placeholder="Enter content test"
+                    value="${this.escapeHtml(this.session.contentTest)}"
+                >
+            </div>
+            ${saveButton}
+        `;
+
+    this.attachEventListeners();
+  }
+
+  private attachEventListeners(): void {
+    const saveButton = document.getElementById('saveSettings') as HTMLButtonElement | null;
+    const contentInput = document.getElementById('contentTest') as HTMLInputElement | null;
+
+    if (!saveButton || !contentInput) {
+      console.error('Required elements not found');
+      return;
+    }
+
+    saveButton.addEventListener('click', async () => {
+      try {
+        await this.saveSettings(contentInput.value);
+      } catch (error) {
+        console.error('Failed to save settings:', error);
+        this.showNotification('Failed to save settings', 'error');
+      }
+    });
+  }
+
+  private async saveSettings(contentTest: string): Promise<void> {
+    if (!this.session) {
+      throw new Error('Session not initialized');
+    }
+
+    this.session.contentTest = contentTest;
+    await this.session.save();
+    this.showNotification('Settings saved successfully!', 'success');
+  }
+
+  private escapeHtml(text: string): string {
+    const div = document.createElement('div');
+    div.textContent = text;
+    return div.innerHTML;
+  }
+
+  private showNotification(message: string, type: 'success' | 'error'): void {
+    // Simple notification - could be enhanced with a proper notification system
+    const notification = document.createElement('div');
+    notification.className = `notification notification-${type}`;
+    notification.textContent = message;
+    notification.style.cssText = `
+            position: fixed;
+            top: 20px;
+            right: 20px;
+            padding: 10px 20px;
+            border-radius: 4px;
+            color: white;
+            background-color: ${type === 'success' ? '#28a745' : '#dc3545'};
+            z-index: 1000;
+        `;
+
+    document.body.appendChild(notification);
+
+    setTimeout(() => {
+      if (notification.parentNode) {
+        notification.parentNode.removeChild(notification);
+      }
+    }, 3000);
+  }
+
+  private handleError(message: string): void {
+    console.error(message);
+    const settingsElement = document.getElementById('settings');
+    if (settingsElement) {
+      settingsElement.innerHTML = `<div class="error-message">${message}</div>`;
+    }
+  }
+}
+
+new Settings();
diff --git a/src/types/buttonType.ts b/src/types/buttonType.ts
new file mode 100644
index 0000000..efdfd5f
--- /dev/null
+++ b/src/types/buttonType.ts
@@ -0,0 +1,10 @@
+export type customButton =
+  | 'neutral'
+  | 'primary'
+  | 'secondary'
+  | 'success'
+  | 'danger'
+  | 'warning'
+  | 'info'
+  | 'light'
+  | 'dark';
diff --git a/tooling.tsconfig.json b/tooling.tsconfig.json
new file mode 100644
index 0000000..72730da
--- /dev/null
+++ b/tooling.tsconfig.json
@@ -0,0 +1,31 @@
+{
+    "compilerOptions": {
+        "target": "ESNext",
+        "lib": [
+            "ESNext"
+        ],
+        "module": "ESNext",
+        "outDir": "./tools/",
+        "rootDir": "./tools/",
+        "removeComments": true,
+        "moduleResolution": "node",
+        "strict": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "forceConsistentCasingInFileNames": true,
+        "types": [
+            "node",
+            "chrome"
+        ]
+    },
+    "include": [
+        "./tools/*.ts"
+    ],
+    "exclude": [
+        "node_modules",
+        "./src/*.ts",
+        "./src/**/*.ts",
+        "./dist/*.ts",
+        "./dist/*.js"
+    ]
+}
diff --git a/tools/deploy.ts b/tools/deploy.ts
deleted file mode 100644
index 8b6b7b0..0000000
--- a/tools/deploy.ts
+++ /dev/null
@@ -1,84 +0,0 @@
-import * as fs from 'fs';
-import * as path from 'path';
-const appConfig = JSON.parse(fs.readFileSync('./app.config.json', 'utf8'));
-const DEPLOY_ENTRY = "./public/";
-const DEPLOY_TARGET = "./dist/";
-
-function deleteFolderRecursive(path: string) {
-  if (fs.existsSync(path)) {
-    fs.readdirSync(path).forEach(function (file: string) {
-      const curPath = path + "/" + file;
-      if (fs.lstatSync(curPath).isDirectory()) {
-        deleteFolderRecursive(curPath);
-      } else {
-        fs.unlinkSync(curPath);
-      }
-    });
-    fs.rmdirSync(path);
-  }
-}
-
-function findHtmlFilesRecursive(source: string): string[] {
-  let files: string[] = [];
-  const dir = fs.readdirSync(source);
-  dir.forEach(function (file: string) {
-    const sourceFile = path.join(source, file);
-    const stat = fs.lstatSync(sourceFile);
-    if (stat.isDirectory()) {
-      files = files.concat(findHtmlFilesRecursive(sourceFile));
-    } else {
-      if (path.extname(sourceFile) == '.html') {
-        files.push(sourceFile);
-      }
-    }
-  });
-  return files;
-}
-
-function replaceKeywordsInHtmlFile(file: string) {
-  const content = fs.readFileSync(file, 'utf8');
-  const pairs = appConfig.htmlTemplatePairs;
-  pairs.forEach(function (pair: object) {
-    // @ts-ignore
-    content = content.replaceAll(pair.key, pair.value);
-  });
-  file = file.replace("public\\", DEPLOY_TARGET);
-  fs.writeFileSync(file, content);
-}
-
-function buildHtmlFiles(source: string) {
-  const files = findHtmlFilesRecursive(source);
-  files.forEach(function (file: string) {
-    replaceKeywordsInHtmlFile(file);
-  });
-}
-
-function mkdirSync(path: string) {
-  try {
-    fs.mkdirSync(path);
-  } catch (e: any) {
-    if (e.code != 'EEXIST') throw e;
-  }
-}
-
-function copyFiles(source: string, target: string) {
-  const files = fs.readdirSync(source);
-  files.forEach(function (file: string) {
-    const sourceFile = path.join(source, file);
-    const targetFile = path.join(target, file);
-    const stat = fs.lstatSync(sourceFile);
-    if (stat.isDirectory()) {
-      mkdirSync(targetFile);
-      copyFiles(sourceFile, targetFile);
-    } else {
-      fs.writeFileSync(targetFile, fs.readFileSync(sourceFile));
-    }
-  });
-}
-
-deleteFolderRecursive(DEPLOY_TARGET);
-mkdirSync(DEPLOY_TARGET);
-copyFiles(DEPLOY_ENTRY, DEPLOY_TARGET);
-buildHtmlFiles(DEPLOY_ENTRY);
-
-console.log("Deployed to " + DEPLOY_TARGET);
\ No newline at end of file
diff --git a/tools/parse.ts b/tools/parse.ts
new file mode 100644
index 0000000..de3f6a1
--- /dev/null
+++ b/tools/parse.ts
@@ -0,0 +1,72 @@
+import * as fs from 'fs';
+import * as path from 'path';
+const appConfig = JSON.parse(fs.readFileSync('./app.config.json', 'utf8'));
+const DEPLOY_TARGET = './dist/';
+
+function findCssFileNames(source: string): string[] {
+  let files: string[] = [];
+  const dir = fs.readdirSync(source);
+  dir.forEach(function (file: string) {
+    const sourceFile = path.join(source, file);
+    const stat = fs.lstatSync(sourceFile);
+    if (stat.isDirectory()) {
+      files = files.concat(findCssFileNames(sourceFile));
+    } else {
+      if (path.extname(sourceFile) === '.css') {
+        files.push(file);
+      }
+    }
+  });
+  return files;
+}
+
+function findHtmlFilesRecursive(source: string): string[] {
+  let files: string[] = [];
+  const dir = fs.readdirSync(source);
+  dir.forEach(function (file: string) {
+    const sourceFile = path.join(source, file);
+    const stat = fs.lstatSync(sourceFile);
+    if (stat.isDirectory()) {
+      files = files.concat(findHtmlFilesRecursive(sourceFile));
+    } else {
+      if (path.extname(sourceFile) == '.html') {
+        files.push(sourceFile);
+      }
+    }
+  });
+  return files;
+}
+
+function replaceKeywordsInHtmlFile(file: string) {
+  let content = fs.readFileSync(file, 'utf8');
+  const pairs: { key: string; value: string }[] = appConfig.htmlTemplatePairs;
+  pairs.forEach(function (pair: { key: string; value: string }) {
+    //@ts-ignore
+    content = content.replaceAll(pair.key, pair.value);
+  });
+  file = file.replace('public\\', DEPLOY_TARGET);
+  fs.writeFileSync(file, content);
+}
+
+function buildHtmlFiles(source: string) {
+  const files = findHtmlFilesRecursive(source);
+  files.forEach(function (file: string) {
+    replaceKeywordsInHtmlFile(file);
+  });
+}
+
+findCssFileNames(DEPLOY_TARGET).forEach((file: string) => {
+  const files = findHtmlFilesRecursive(DEPLOY_TARGET);
+  files.forEach(function (htmlFile: string) {
+    let content = fs.readFileSync(htmlFile, 'utf8');
+    content = content.replace(
+      '</head>',
+      `<link rel="stylesheet" href="./assets/${file}">\n</head>`
+    );
+    fs.writeFileSync(htmlFile, content);
+  });
+});
+
+buildHtmlFiles(DEPLOY_TARGET);
+
+console.log('Parsed Files: ', findHtmlFilesRecursive(DEPLOY_TARGET));
diff --git a/tools/syncConfig.ts b/tools/syncConfig.ts
index 22b800c..6c4bc41 100644
--- a/tools/syncConfig.ts
+++ b/tools/syncConfig.ts
@@ -1,22 +1,151 @@
 import * as fs from 'fs';
 
-const appConfig = JSON.parse(fs.readFileSync('./app.config.json', 'utf8'));
-const pkg = JSON.parse(fs.readFileSync('./package.json', 'utf8'));
-const manifest = JSON.parse(fs.readFileSync('./public/manifest.json', 'utf8'));
+interface AppConfig {
+  AppData: {
+    id: string;
+    name: string;
+    version: string;
+    description: string;
+    repository: {
+      type: string;
+      url: string;
+    };
+    license: string;
+    homepage: string;
+    bugs: {
+      url: string;
+    };
+    authors: Array<{
+      name: string;
+      email: string;
+    }>;
+  };
+  htmlTemplatePairs: Array<{
+    key: string;
+    value: string;
+  }>;
+}
 
-pkg.version = appConfig.AppData.version;
-pkg.name = appConfig.AppData.id;
-pkg.authors = appConfig.AppData.authors;
-pkg.description = appConfig.AppData.description;
-pkg.homepage = appConfig.AppData.homepage;
-pkg.license = appConfig.AppData.license;
-pkg.repository = appConfig.AppData.repository;
-pkg.bugs = appConfig.AppData.bugs;
+interface PackageJson {
+  version: string;
+  name: string;
+  authors: Array<{
+    name: string;
+    email: string;
+  }>;
+  description: string;
+  homepage: string;
+  license: string;
+  repository: {
+    type: string;
+    url: string;
+  };
+  bugs: {
+    url: string;
+  };
+  [key: string]: unknown;
+}
 
-manifest.version = appConfig.AppData.version;
-manifest.name = appConfig.AppData.name;
-manifest.description = appConfig.AppData.description;
-manifest.homepage_url = appConfig.AppData.homepage;
+interface ManifestJson {
+  version: string;
+  name: string;
+  description: string;
+  homepage_url: string;
+  [key: string]: unknown;
+}
 
-fs.writeFileSync('./package.json', JSON.stringify(pkg, null, 2));
-fs.writeFileSync('./public/manifest.json', JSON.stringify(manifest, null, 2));
\ No newline at end of file
+class ConfigSyncer {
+  private readonly appConfigPath = './app.config.json';
+  private readonly packageJsonPath = './package.json';
+  private readonly manifestJsonPath = './public/manifest.json';
+
+  public async sync(): Promise<void> {
+    try {
+      console.log('Starting configuration synchronization...');
+
+      const appConfig = await this.loadAppConfig();
+      const packageJson = await this.loadPackageJson();
+      const manifestJson = await this.loadManifestJson();
+
+      this.updatePackageJson(packageJson, appConfig.AppData);
+      this.updateManifestJson(manifestJson, appConfig.AppData);
+
+      await this.savePackageJson(packageJson);
+      await this.saveManifestJson(manifestJson);
+
+      console.log('Configuration synchronization completed successfully!');
+    } catch (error) {
+      console.error('Failed to sync configuration:', error);
+      process.exit(1);
+    }
+  }
+
+  private async loadAppConfig(): Promise<AppConfig> {
+    try {
+      const content = await fs.promises.readFile(this.appConfigPath, 'utf8');
+      return JSON.parse(content) as AppConfig;
+    } catch (error) {
+      throw new Error(`Failed to load app config: ${error}`);
+    }
+  }
+
+  private async loadPackageJson(): Promise<PackageJson> {
+    try {
+      const content = await fs.promises.readFile(this.packageJsonPath, 'utf8');
+      return JSON.parse(content) as PackageJson;
+    } catch (error) {
+      throw new Error(`Failed to load package.json: ${error}`);
+    }
+  }
+
+  private async loadManifestJson(): Promise<ManifestJson> {
+    try {
+      const content = await fs.promises.readFile(this.manifestJsonPath, 'utf8');
+      return JSON.parse(content) as ManifestJson;
+    } catch (error) {
+      throw new Error(`Failed to load manifest.json: ${error}`);
+    }
+  }
+
+  private updatePackageJson(packageJson: PackageJson, appData: AppConfig['AppData']): void {
+    packageJson.version = appData.version;
+    packageJson.name = appData.id;
+    packageJson.authors = appData.authors;
+    packageJson.description = appData.description;
+    packageJson.homepage = appData.homepage;
+    packageJson.license = appData.license;
+    packageJson.repository = appData.repository;
+    packageJson.bugs = appData.bugs;
+  }
+
+  private updateManifestJson(manifestJson: ManifestJson, appData: AppConfig['AppData']): void {
+    manifestJson.version = appData.version;
+    manifestJson.name = appData.name;
+    manifestJson.description = appData.description;
+    manifestJson.homepage_url = appData.homepage;
+  }
+
+  private async savePackageJson(packageJson: PackageJson): Promise<void> {
+    try {
+      const content = JSON.stringify(packageJson, null, 2);
+      await fs.promises.writeFile(this.packageJsonPath, content, 'utf8');
+      console.log('✓ package.json updated');
+    } catch (error) {
+      throw new Error(`Failed to save package.json: ${error}`);
+    }
+  }
+
+  private async saveManifestJson(manifestJson: ManifestJson): Promise<void> {
+    try {
+      const content = JSON.stringify(manifestJson, null, 2);
+      await fs.promises.writeFile(this.manifestJsonPath, content, 'utf8');
+      console.log('✓ manifest.json updated');
+    } catch (error) {
+      throw new Error(`Failed to save manifest.json: ${error}`);
+    }
+  }
+}
+
+// Run the sync process
+const syncer = new ConfigSyncer();
+syncer.sync().catch(console.error);
diff --git a/tools/v2.ts b/tools/v2.ts
index dd42ddb..dcb4007 100644
--- a/tools/v2.ts
+++ b/tools/v2.ts
@@ -1,45 +1,46 @@
-import * as fs from 'fs';
+// @ts-ignore
+const fs = require('fs');
 
 const manifest = JSON.parse(fs.readFileSync('./dist/manifest.json', 'utf8'));
 
-manifest.manifest_version = 2
+manifest.manifest_version = 2;
 
-manifest.background.scripts = []
+manifest.background.scripts = [];
 
-manifest.background.scripts.push(manifest.background.service_worker)
-delete manifest.background.type
-delete manifest.background.service_worker
-manifest.background.persistent = true
+manifest.background.scripts.push(manifest.background.service_worker);
+delete manifest.background.type;
+delete manifest.background.service_worker;
+manifest.background.persistent = true;
 if (manifest.host_permissions) {
-    manifest.permissions.push(manifest.host_permissions)
+  manifest.permissions.push(manifest.host_permissions);
 }
 if (manifest.optional_host_permissions) {
-    manifest.permissions.push(manifest.optional_host_permissions)
+  manifest.permissions.push(manifest.optional_host_permissions);
 }
-delete manifest.host_permissions
-delete manifest.optional_host_permissions
+delete manifest.host_permissions;
+delete manifest.optional_host_permissions;
 
-let newContentSecurityPolicy = ""
+let newContentSecurityPolicy = '';
 
 try {
-    for (const policy of manifest.content_security_policy) {
-        newContentSecurityPolicy += policy.key + "'" + policy.value + "'" + " "
-    }
+  for (const policy of manifest.content_security_policy) {
+    newContentSecurityPolicy += policy.key + "'" + policy.value + "'" + ' ';
+  }
 } catch (e) {
-    newContentSecurityPolicy = "default-src 'self'"
+  newContentSecurityPolicy = "default-src 'self'";
 }
 
-manifest.content_security_policy = newContentSecurityPolicy
+manifest.content_security_policy = newContentSecurityPolicy;
 
 try {
-    manifest.web_accessible_resources = manifest.web_accessible_resources.resources
+  manifest.web_accessible_resources = manifest.web_accessible_resources.resources;
 } catch (e) {
-    manifest.web_accessible_resources = []
+  manifest.web_accessible_resources = [];
 }
 
 if (manifest.action) {
-    manifest.browser_action = manifest.action
+  manifest.browser_action = manifest.action;
 }
-delete manifest.action
+delete manifest.action;
 
-fs.writeFileSync('./dist/manifest.json', JSON.stringify(manifest, null, 2));
\ No newline at end of file
+fs.writeFileSync('./dist/manifest.json', JSON.stringify(manifest, null, 2));
diff --git a/tsconfig.json b/tsconfig.json
index fe9081d..96013de 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,81 +1,49 @@
 {
   "compilerOptions": {
-    /* Visit https://aka.ms/tsconfig.json to read more about this file */
+    /* Language and Environment */
+    "target": "ES2022",
+    "module": "ESNext",
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
 
-    /* Basic Options */
-    // "incremental": true,                         /* Enable incremental compilation */
-    "target": "ESNext",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */
-    "module": "ESNext",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
-    // "lib": ["ESNext"],                                   /* Specify library files to be included in the compilation. */
-    // "allowJs": true,                             /* Allow javascript files to be compiled. */
-    // "checkJs": true,                             /* Report errors in .js files. */
-    // "jsx": "preserve",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */
-    // "declaration": true,                         /* Generates corresponding '.d.ts' file. */
-    // "declarationMap": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */
-    // "sourceMap": true,                           /* Generates corresponding '.map' file. */
-    // "outFile": "./public/js/app.js",                             /* Concatenate and emit output to single file. */
-    "outDir": "./dist/js/",                              /* Redirect output structure to the directory. */
-    // "rootDir": "./",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
-    // "composite": true,                           /* Enable project compilation */
-    // "tsBuildInfoFile": "./",                     /* Specify file to store incremental compilation information */
-    // "removeComments": true,                      /* Do not emit comments to output. */
-    // "noEmit": true,                              /* Do not emit outputs. */
-    // "importHelpers": true,                       /* Import emit helpers from 'tslib'. */
-    // "downlevelIteration": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
-    // "isolatedModules": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
-    "moduleResolution": "node",
-    /* Strict Type-Checking Options */
-    "strict": true,                                 /* Enable all strict type-checking options. */
-    // "noImplicitAny": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */
-    // "strictNullChecks": true,                    /* Enable strict null checks. */
-    // "strictFunctionTypes": true,                 /* Enable strict checking of function types. */
-    // "strictBindCallApply": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    // "strictPropertyInitialization": true,        /* Enable strict checking of property initialization in classes. */
-    // "noImplicitThis": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */
-    // "alwaysStrict": true,                        /* Parse in strict mode and emit "use strict" for each source file. */
+    /* Type Checking */
+    "strict": true,
+    "noImplicitAny": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "strictBindCallApply": true,
+    "strictPropertyInitialization": true,
+    "noImplicitThis": true,
+    "alwaysStrict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "exactOptionalPropertyTypes": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedIndexedAccess": true,
+    "noImplicitOverride": true,
+    "noPropertyAccessFromIndexSignature": true,
 
-    /* Additional Checks */
-    // "noUnusedLocals": true,                      /* Report errors on unused locals. */
-    // "noUnusedParameters": true,                  /* Report errors on unused parameters. */
-    // "noImplicitReturns": true,                   /* Report error when not all code paths in function return a value. */
-    // "noFallthroughCasesInSwitch": true,          /* Report errors for fallthrough cases in switch statement. */
-    // "noUncheckedIndexedAccess": true,            /* Include 'undefined' in index signature results */
-    // "noImplicitOverride": true,                  /* Ensure overriding members in derived classes are marked with an 'override' modifier. */
-    // "noPropertyAccessFromIndexSignature": true,  /* Require undeclared properties from index signatures to use element accesses. */
+    /* Emit */
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+    "outDir": "./dist",
+    "removeComments": false,
+    "importHelpers": true,
 
-    /* Module Resolution Options */
-    // "moduleResolution": "node",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
-    // "baseUrl": "./",                             /* Base directory to resolve non-absolute module names. */
-    // "paths": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
-    // "rootDirs": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */
-    // "typeRoots": [],                             /* List of folders to include type definitions from. */
-    // "types": [],                                 /* Type declaration files to be included in compilation. */
-    // "allowSyntheticDefaultImports": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
-    "esModuleInterop": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
-    // "preserveSymlinks": true,                    /* Do not resolve the real path of symlinks. */
-    // "allowUmdGlobalAccess": true,                /* Allow accessing UMD globals from modules. */
+    /* Interop Constraints */
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
 
-    /* Source Map Options */
-    // "sourceRoot": "",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */
-    // "mapRoot": "",                               /* Specify the location where debugger should locate map files instead of generated locations. */
-    // "inlineSourceMap": true,                     /* Emit a single file with source maps instead of having a separate file. */
-    // "inlineSources": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
-
-    /* Experimental Options */
-    // "experimentalDecorators": true,              /* Enables experimental support for ES7 decorators. */
-    // "emitDecoratorMetadata": true,               /* Enables experimental support for emitting type metadata for decorators. */
-
-    /* Advanced Options */
-    "skipLibCheck": true,                           /* Skip type checking of declaration files. */
-    "forceConsistentCasingInFileNames": true        /* Disallow inconsistently-cased references to the same file. */
+    /* Completeness */
+    "skipLibCheck": true
   },
-  "include": [
-    "./src/**/*.ts",
-    "./src/*.ts"
-  ],
-  "exclude": [
-    "./tools/*.ts",
-    "./dist/*.ts",
-    "./dist/*.js"
-  ]
+  "include": ["src/**/*.ts"],
+  "exclude": ["node_modules", "dist", "tools/*.js"]
 }
diff --git a/vite.config.ts b/vite.config.ts
new file mode 100644
index 0000000..fdf26ed
--- /dev/null
+++ b/vite.config.ts
@@ -0,0 +1,71 @@
+import { resolve } from 'path';
+import { defineConfig } from 'vite';
+import tsconfigPaths from 'vite-tsconfig-paths';
+
+export default defineConfig({
+  build: {
+    rollupOptions: {
+      input: {
+        app: resolve(__dirname, 'src/app.ts'),
+        settings: resolve(__dirname, 'src/settings.ts'),
+        background: resolve(__dirname, 'src/background.ts'),
+      },
+      output: {
+        entryFileNames: '[name].js',
+        chunkFileNames: 'chunks/[name]-[hash].js',
+        assetFileNames: assetInfo => {
+          if (assetInfo.name?.endsWith('.css')) {
+            return 'assets/[name]-[hash][extname]';
+          }
+          return 'assets/[name]-[hash][extname]';
+        },
+        dir: resolve(__dirname, 'dist'),
+      },
+    },
+    sourcemap: true,
+    target: 'es2022',
+    minify: 'esbuild',
+    reportCompressedSize: false,
+    chunkSizeWarningLimit: 1000,
+  },
+  plugins: [tsconfigPaths()],
+  resolve: {
+    extensions: ['.ts', '.tsx', '.js', '.jsx', '.scss', '.sass'],
+    alias: {
+      '@': resolve(__dirname, './src'),
+      '@components': resolve(__dirname, './src/components'),
+      '@classes': resolve(__dirname, './src/classes'),
+      '@types': resolve(__dirname, './src/types'),
+      '@sass': resolve(__dirname, './src/sass'),
+    },
+  },
+  esbuild: {
+    target: 'es2022',
+    include: /.*\.tsx?$/,
+    exclude: [/node_modules/, /dist/],
+    legalComments: 'none',
+  },
+  define: {
+    __DEV__: JSON.stringify(process.env.NODE_ENV === 'development'),
+    __VERSION__: JSON.stringify(process.env.npm_package_version || '0.0.1'),
+  },
+  css: {
+    preprocessorOptions: {
+      sass: {
+        additionalData: `@import "@sass/_root.sass"\n@import "@sass/_mixin.sass"\n`,
+        quietDeps: true,
+        verbose: false,
+        charset: false,
+        silenceDeprecations: [
+          'import',
+          'global-builtin',
+          'color-functions',
+          'legacy-js-api',
+          'mixed-decls',
+          'slash-div',
+        ],
+      },
+    },
+    devSourcemap: true,
+  },
+});