diff --git a/.env.example b/.env.example
new file mode 100644
index 000000000..05148d4de
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,14 @@
+# Environment configuration example
+# Copy this file to .env and adjust values as needed
+
+# NODE_ENV - Set the Node environment (development, production, staging)
+NODE_ENV=development
+
+# PRODUCTION - Set to true for production builds
+PRODUCTION=false
+
+# STAGE - Set to true for staging builds
+STAGE=false
+
+# Additional environment variables can be added here
+# They will be accessible in the Angular app via process.env
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 0d1929260..14b7fae74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,15 @@
 # See http://help.github.com/ignore-files/ for more about ignoring files.
 
+# environment files
+.env
+.env.production
+.env.stage
+.env.local
+.env.*.local
+
+# auto-generated environment file
+src/environments/environment.ts
+
 # compiled output
 /.tmp
 /dist
diff --git a/docs/ENV_SETUP.md b/docs/ENV_SETUP.md
new file mode 100644
index 000000000..6d274d492
--- /dev/null
+++ b/docs/ENV_SETUP.md
@@ -0,0 +1,62 @@
+# Environment Configuration
+
+Super Productivity now uses `.env` files for environment-specific configuration instead of Angular's traditional environment files.
+
+## Setup
+
+1. Copy `.env.example` to `.env` for local development:
+
+   ```bash
+   cp .env.example .env
+   ```
+
+2. Create environment-specific files as needed:
+   - `.env` - Default development environment
+   - `.env.production` - Production environment
+   - `.env.stage` - Staging environment
+
+## How it Works
+
+The build process automatically generates `src/environments/environment.ts` from the appropriate `.env` file using `tools/generate-env.js`.
+
+## Available Variables
+
+- `NODE_ENV` - Environment name (development, production, staging)
+- `PRODUCTION` - Set to "true" for production builds
+- `STAGE` - Set to "true" for staging builds
+
+## Usage
+
+### Development
+
+```bash
+npm run startFrontend
+```
+
+### Production
+
+```bash
+npm run startFrontend:prod
+# or
+npm run buildFrontend:prod:es6
+```
+
+### Staging
+
+```bash
+npm run startFrontend:stage
+# or
+npm run buildFrontend:stage:es6
+```
+
+## Adding New Environment Variables
+
+1. Add the variable to your `.env` files
+2. Update `tools/generate-env.js` to include the new variable in the generated environment
+3. Use the variable in your code via `environment.yourVariable`
+
+## Important Notes
+
+- The `src/environments/environment.ts` file is auto-generated and should not be edited directly
+- All `.env` files are gitignored for security
+- Always use `.env.example` as a template for required variables
diff --git a/package-lock.json b/package-lock.json
index 9e02075cd..ffb2c2c29 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,6 +20,7 @@
         "node-fetch": "^2.7.0"
       },
       "devDependencies": {
+        "@angular-builders/custom-webpack": "^19.0.1",
         "@angular-devkit/build-angular": "^19.2.11",
         "@angular-eslint/builder": "^19.3.0",
         "@angular-eslint/eslint-plugin": "^19.3.0",
@@ -50,6 +51,7 @@
         "@capawesome/capacitor-android-dark-mode-support": "^7.0.0",
         "@capawesome/capacitor-background-task": "^7.0.1",
         "@csstools/stylelint-formatter-github": "^1.0.0",
+        "@dotenv-run/cli": "^1.3.6",
         "@electron/notarize": "^3.0.1",
         "@fontsource/roboto": "^4.5.8",
         "@nextcloud/cdav-library": "^1.5.3",
@@ -156,6 +158,190 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/@angular-builders/common": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/@angular-builders/common/-/common-3.0.1.tgz",
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+      "dev": true,
+      "dependencies": {
+        "@angular-devkit/core": "^19.0.0",
+        "ts-node": "^10.0.0",
+        "tsconfig-paths": "^4.1.0"
+      },
+      "engines": {
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0"
+      }
+    },
+    "node_modules/@angular-builders/common/node_modules/@angular-devkit/core": {
+      "version": "19.2.15",
+      "resolved": "https://registry.npmjs.org/@angular-devkit/core/-/core-19.2.15.tgz",
+      "integrity": "sha512-pU2RZYX6vhd7uLSdLwPnuBcr0mXJSjp3EgOXKsrlQFQZevc+Qs+2JdXgIElnOT/aDqtRtriDmLlSbtdE8n3ZbA==",
+      "dev": true,
+      "dependencies": {
+        "ajv": "8.17.1",
+        "ajv-formats": "3.0.1",
+        "jsonc-parser": "3.3.1",
+        "picomatch": "4.0.2",
+        "rxjs": "7.8.1",
+        "source-map": "0.7.4"
+      },
+      "engines": {
+        "node": "^18.19.1 || ^20.11.1 || >=22.0.0",
+        "npm": "^6.11.0 || ^7.5.6 || >=8.0.0",
+        "yarn": ">= 1.13.0"
+      },
+      "peerDependencies": {
+        "chokidar": "^4.0.0"
+      },
+      "peerDependenciesMeta": {
+        "chokidar": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@angular-builders/common/node_modules/chokidar": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
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+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@angular-builders/common/node_modules/readdirp": {
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+      }
+    },
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+      "dev": true,
+      "dependencies": {
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+      "dev": true,
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+        "strip-bom": "^3.0.0"
+      },
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+        "@angular-devkit/core": "^19.0.0",
+        "lodash": "^4.17.15",
+        "webpack-merge": "^6.0.0"
+      },
+      "engines": {
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+      },
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+        }
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+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
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+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@angular-builders/custom-webpack/node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
+      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@angular-builders/custom-webpack/node_modules/rxjs": {
+      "version": "7.8.1",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
+      "integrity": "sha512-AA3TVj+0A2iuIoQkWEK/tqFjBq2j+6PO6Y0zJcvzLAFhEFIO3HL0vls9hWLncZbAAbK0mar7oZ4V079I/qPMxg==",
+      "dev": true,
+      "dependencies": {
+        "tslib": "^2.1.0"
+      }
+    },
     "node_modules/@angular-devkit/architect": {
       "version": "0.1902.11",
       "resolved": "https://registry.npmjs.org/@angular-devkit/architect/-/architect-0.1902.11.tgz",
@@ -198,6 +384,38 @@
         }
       }
     },
+    "node_modules/@angular-devkit/architect/node_modules/chokidar": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
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+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "readdirp": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 14.16.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@angular-devkit/architect/node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
+      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@angular-devkit/architect/node_modules/rxjs": {
       "version": "7.8.1",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
@@ -359,6 +577,38 @@
         }
       }
     },
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+      "dev": true,
+      "optional": true,
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+      "dependencies": {
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+      },
+      "engines": {
+        "node": ">= 14.16.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@angular-devkit/build-angular/node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
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+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@angular-devkit/build-angular/node_modules/rxjs": {
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       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
@@ -496,6 +746,38 @@
         }
       }
     },
+    "node_modules/@angular-eslint/builder/node_modules/chokidar": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
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+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "readdirp": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 14.16.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@angular-eslint/builder/node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
+      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@angular-eslint/builder/node_modules/rxjs": {
       "version": "7.8.1",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
@@ -645,6 +927,21 @@
         "typescript": "*"
       }
     },
+    "node_modules/@angular-eslint/schematics/node_modules/@angular-eslint/template-parser": {
+      "version": "20.1.1",
+      "resolved": "https://registry.npmjs.org/@angular-eslint/template-parser/-/template-parser-20.1.1.tgz",
+      "integrity": "sha512-giIMYORf8P8MbBxh6EUfiR/7Y+omxJtK2C7a8lYTtLSOIGO0D8c8hXx9hTlPcdupVX+xZXDuZ85c9JDen+JSSA==",
+      "dev": true,
+      "peer": true,
+      "dependencies": {
+        "@angular-eslint/bundled-angular-compiler": "20.1.1",
+        "eslint-scope": "^8.0.2"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": "*"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/@angular-eslint/utils/-/utils-20.1.1.tgz",
@@ -683,6 +980,23 @@
         "url": "https://github.com/chalk/chalk?sponsor=1"
       }
     },
+    "node_modules/@angular-eslint/schematics/node_modules/chokidar": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
+      "integrity": "sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "dependencies": {
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+      },
+      "engines": {
+        "node": ">= 14.16.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@angular-eslint/schematics/node_modules/emoji-regex": {
       "version": "10.4.0",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-10.4.0.tgz",
@@ -773,6 +1087,21 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/@angular-eslint/schematics/node_modules/readdirp": {
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+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
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+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "engines": {
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+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@angular-eslint/schematics/node_modules/rxjs": {
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@@ -1202,6 +1531,23 @@
         "yarn": ">= 1.13.0"
       }
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+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
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@@ -1220,6 +1566,21 @@
         "@jridgewell/sourcemap-codec": "^1.5.0"
       }
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+    },
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+    },
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+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loongarch64-gnu/-/rollup-linux-loongarch64-gnu-4.45.0.tgz",
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+      "peer": true
+    },
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-powerpc64le-gnu/-/rollup-linux-powerpc64le-gnu-4.45.0.tgz",
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+      "peer": true
+    },
+    "node_modules/vite/node_modules/@rollup/rollup-linux-riscv64-gnu": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.45.0.tgz",
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+        "riscv64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "peer": true
+    },
+    "node_modules/vite/node_modules/@rollup/rollup-linux-s390x-gnu": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.45.0.tgz",
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+      "cpu": [
+        "s390x"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "linux"
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+      "peer": true
+    },
+    "node_modules/vite/node_modules/@rollup/rollup-linux-x64-gnu": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.45.0.tgz",
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+        "x64"
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+        "linux"
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+    },
+    "node_modules/vite/node_modules/@rollup/rollup-linux-x64-musl": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.45.0.tgz",
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+      "cpu": [
+        "x64"
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+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "peer": true
+    },
+    "node_modules/vite/node_modules/@rollup/rollup-win32-arm64-msvc": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.45.0.tgz",
+      "integrity": "sha512-B+IJgcBnE2bm93jEW5kHisqvPITs4ddLOROAcOc/diBgrEiQJJ6Qcjby75rFSmH5eMGrqJryUgJDhrfj942apQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "peer": true
+    },
+    "node_modules/vite/node_modules/@rollup/rollup-win32-ia32-msvc": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.45.0.tgz",
+      "integrity": "sha512-+CXwwG66g0/FpWOnP/v1HnrGVSOygK/osUbu3wPRy8ECXjoYKjRAyfxYpDQOfghC5qPJYLPH0oN4MCOjwgdMug==",
+      "cpu": [
+        "ia32"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "peer": true
+    },
+    "node_modules/vite/node_modules/@rollup/rollup-win32-x64-msvc": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.45.0.tgz",
+      "integrity": "sha512-SRf1cytG7wqcHVLrBc9VtPK4pU5wxiB/lNIkNmW2ApKXIg+RpqwHfsaEK+e7eH4A1BpI6BX/aBWXxZCIrJg3uA==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "peer": true
+    },
+    "node_modules/vite/node_modules/@types/estree": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
+      "integrity": "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w==",
+      "dev": true,
+      "peer": true
+    },
+    "node_modules/vite/node_modules/nanoid": {
+      "version": "3.3.11",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
+      "integrity": "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "peer": true,
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+      }
+    },
+    "node_modules/vite/node_modules/postcss": {
+      "version": "8.5.6",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
+      "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/postcss/"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "peer": true,
+      "dependencies": {
+        "nanoid": "^3.3.11",
+        "picocolors": "^1.1.1",
+        "source-map-js": "^1.2.1"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >=14"
+      }
+    },
+    "node_modules/vite/node_modules/rollup": {
+      "version": "4.45.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.45.0.tgz",
+      "integrity": "sha512-WLjEcJRIo7i3WDDgOIJqVI2d+lAC3EwvOGy+Xfq6hs+GQuAA4Di/H72xmXkOhrIWFg2PFYSKZYfH0f4vfKXN4A==",
+      "dev": true,
+      "peer": true,
+      "dependencies": {
+        "@types/estree": "1.0.8"
+      },
+      "bin": {
+        "rollup": "dist/bin/rollup"
+      },
+      "engines": {
+        "node": ">=18.0.0",
+        "npm": ">=8.0.0"
+      },
+      "optionalDependencies": {
+        "@rollup/rollup-android-arm-eabi": "4.45.0",
+        "@rollup/rollup-android-arm64": "4.45.0",
+        "@rollup/rollup-darwin-arm64": "4.45.0",
+        "@rollup/rollup-darwin-x64": "4.45.0",
+        "@rollup/rollup-freebsd-arm64": "4.45.0",
+        "@rollup/rollup-freebsd-x64": "4.45.0",
+        "@rollup/rollup-linux-arm-gnueabihf": "4.45.0",
+        "@rollup/rollup-linux-arm-musleabihf": "4.45.0",
+        "@rollup/rollup-linux-arm64-gnu": "4.45.0",
+        "@rollup/rollup-linux-arm64-musl": "4.45.0",
+        "@rollup/rollup-linux-loongarch64-gnu": "4.45.0",
+        "@rollup/rollup-linux-powerpc64le-gnu": "4.45.0",
+        "@rollup/rollup-linux-riscv64-gnu": "4.45.0",
+        "@rollup/rollup-linux-riscv64-musl": "4.45.0",
+        "@rollup/rollup-linux-s390x-gnu": "4.45.0",
+        "@rollup/rollup-linux-x64-gnu": "4.45.0",
+        "@rollup/rollup-linux-x64-musl": "4.45.0",
+        "@rollup/rollup-win32-arm64-msvc": "4.45.0",
+        "@rollup/rollup-win32-ia32-msvc": "4.45.0",
+        "@rollup/rollup-win32-x64-msvc": "4.45.0",
+        "fsevents": "~2.3.2"
+      }
+    },
     "node_modules/void-elements": {
       "version": "2.0.1",
       "dev": true,
@@ -26062,6 +27129,13 @@
         "node": "*"
       }
     },
+    "node_modules/zone.js": {
+      "version": "0.15.1",
+      "resolved": "https://registry.npmjs.org/zone.js/-/zone.js-0.15.1.tgz",
+      "integrity": "sha512-XE96n56IQpJM7NAoXswY3XRLcWFW83xe0BiAOeMD7K5k5xecOeul3Qcpx6GqEeeHNkW5DWL5zOyTbEfB4eti8w==",
+      "dev": true,
+      "peer": true
+    },
     "packages/plugin-api": {
       "name": "@super-productivity/plugin-api",
       "version": "1.0.1",
diff --git a/package.json b/package.json
index ccb775f79..6bfabb5fa 100644
--- a/package.json
+++ b/package.json
@@ -32,12 +32,12 @@
     "buildAllElectron:noTests:prod": "npm run lint && npm run buildFrontend:prod:es6 && npm run electron:build",
     "buildAllElectron:prod": "npm run preCheck && npm run buildFrontend:prod:es6 && npm run electron:build",
     "buildAllElectron:stage": "npm run preCheck && npm run buildFrontend:stage:es6 && npm run electron:build",
-    "buildFrontend:prod:es6": "npm run prebuild && cross-env BROWSERSLIST_ENV='modern' ng build --configuration production && npm run removeWOFF1",
-    "buildFrontend:prod:watch": "npm run prebuild && ng build --configuration production --watch",
-    "buildFrontend:prodWeb": "npm run prebuild && ng build  --configuration productionWeb",
-    "buildFrontend:stage:es6": "npm run prebuild && cross-env BROWSERSLIST_ENV='modern' ng build --configuration stage && npm run removeWOFF1",
-    "buildFrontend:stageWeb": "npm run prebuild && ng build --configuration stageWeb",
-    "buildFrontend:stageWeb:unminified": "npm run prebuild && ng build --configuration stageWeb --optimization=false --aot=false",
+    "buildFrontend:prod:es6": "npm run prebuild && node tools/generate-env.js production && cross-env BROWSERSLIST_ENV='modern' ng build --configuration production && npm run removeWOFF1",
+    "buildFrontend:prod:watch": "npm run prebuild && node tools/generate-env.js production && ng build --configuration production --watch",
+    "buildFrontend:prodWeb": "npm run prebuild && node tools/generate-env.js production && ng build  --configuration productionWeb",
+    "buildFrontend:stage:es6": "npm run prebuild && node tools/generate-env.js stage && cross-env BROWSERSLIST_ENV='modern' ng build --configuration stage && npm run removeWOFF1",
+    "buildFrontend:stageWeb": "npm run prebuild && node tools/generate-env.js stage && ng build --configuration stageWeb",
+    "buildFrontend:stageWeb:unminified": "npm run prebuild && node tools/generate-env.js stage && ng build --configuration stageWeb --optimization=false --aot=false",
     "dist": "npm run buildAllElectron:prod && electron-builder",
     "dist:android": "npm run buildFrontend:stageWeb:unminified && npm run sync:android && npm run assemble:android:stage && echo 'Staging Android APK generated at android/app/build/outputs/apk/debug/'",
     "dist:android:prod": "npm run buildFrontend:prodWeb && npm run sync:android && npm run assemble:android:prod && echo 'Production Android APK generated at android/app/build/outputs/apk/release/'",
@@ -85,7 +85,9 @@
     "removeWOFF1": "node ./tools/remove-woff.js",
     "serveProd": "ng serve --configuration production",
     "start": "npm run electron:build && cross-env NODE_ENV=DEV electron .",
-    "startFrontend": "ng serve",
+    "startFrontend": "node tools/generate-env.js development && ng serve",
+    "startFrontend:prod": "node tools/generate-env.js production && ng serve --configuration production",
+    "startFrontend:stage": "node tools/generate-env.js stage && ng serve --configuration stage",
     "sync:android": "npx cap sync android",
     "stats": "ng build --configuration production --source-map --stats-json && npx esbuild-visualizer --metadata .tmp/angular-dist/stats.json && xdg-open stats.html",
     "test": "cross-env TZ='Europe/Berlin' ng test --watch=false && npm run test:tz:ci",
@@ -123,6 +125,7 @@
     "node-fetch": "^2.7.0"
   },
   "devDependencies": {
+    "@angular-builders/custom-webpack": "^19.0.1",
     "@angular-devkit/build-angular": "^19.2.11",
     "@angular-eslint/builder": "^19.3.0",
     "@angular-eslint/eslint-plugin": "^19.3.0",
@@ -153,6 +156,7 @@
     "@capawesome/capacitor-android-dark-mode-support": "^7.0.0",
     "@capawesome/capacitor-background-task": "^7.0.1",
     "@csstools/stylelint-formatter-github": "^1.0.0",
+    "@dotenv-run/cli": "^1.3.6",
     "@electron/notarize": "^3.0.1",
     "@fontsource/roboto": "^4.5.8",
     "@nextcloud/cdav-library": "^1.5.3",
diff --git a/src/environments/environment.ts b/src/environments/environment.ts
deleted file mode 100644
index e4281f762..000000000
--- a/src/environments/environment.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-// This file can be replaced during build by using the `fileReplacements` array.
-// `ng build ---prod` replaces `environment.ts` with `environment.prod.ts`.
-// The list of file replacements can be found in `angular.json`.
-import pkg from '../../package.json';
-
-export const environment = {
-  production: false,
-  stage: false,
-  version: pkg.version,
-};
diff --git a/tools/generate-env.js b/tools/generate-env.js
new file mode 100755
index 000000000..95627b882
--- /dev/null
+++ b/tools/generate-env.js
@@ -0,0 +1,49 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const path = require('path');
+
+// Get environment name from command line or default to development
+const envName = process.argv[2] || 'development';
+
+// Map environment names to .env files
+const envFileMap = {
+  development: '.env',
+  production: '.env.production',
+  stage: '.env.stage',
+};
+
+// Load environment variables manually
+const envFile = envFileMap[envName] || '.env';
+const envPath = path.join(process.cwd(), envFile);
+const envContent = fs.readFileSync(envPath, 'utf8');
+const env = {};
+
+// Parse .env file
+envContent.split('\n').forEach((line) => {
+  line = line.trim();
+  if (line && !line.startsWith('#')) {
+    const [key, value] = line.split('=');
+    if (key && value) {
+      env[key.trim()] = value.trim();
+    }
+  }
+});
+
+// Generate environment.ts content
+const envTsContent = `// This file is auto-generated by tools/generate-env.js
+// Do not modify directly
+import pkg from '../../package.json';
+
+export const environment = {
+  production: ${env.PRODUCTION === 'true'},
+  stage: ${env.STAGE === 'true'},
+  version: pkg.version,
+};
+`;
+
+// Write to environment.ts
+const targetPath = path.join(__dirname, '../src/environments/environment.ts');
+fs.writeFileSync(targetPath, envTsContent);
+
+console.log(`✅ Generated environment.ts from ${envFile}`);
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 000000000..4c3c20447
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,16 @@
+const webpack = require('webpack');
+
+module.exports = (webpackConfig) => {
+  // The environment variables are already loaded by dotenv-run CLI
+  // We just need to pass them through DefinePlugin
+
+  webpackConfig.plugins.push(
+    new webpack.DefinePlugin({
+      'process.env.PRODUCTION': JSON.stringify(process.env.PRODUCTION),
+      'process.env.STAGE': JSON.stringify(process.env.STAGE),
+      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
+    }),
+  );
+
+  return webpackConfig;
+};