diff --git a/README.md b/README.md
index 91887ccad..f24502ce7 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Complete documentation is available in the [docs/](./docs/) folder:
 ## Technology Stack
 
 - **Backend**: Java 21, Spring Boot 3.3.2
-- **Frontend**: React 18, TypeScript
+- **Frontend**: React 19, TypeScript, Vite
 - **Build**: Maven
 - **Testing**: JUnit 5, Jest, PIT mutation testing
 - **Quality**: SonarCloud, JaCoCo
diff --git a/docs/DEVELOPMENT.md b/docs/DEVELOPMENT.md
index 1df2002bf..327248ca3 100644
--- a/docs/DEVELOPMENT.md
+++ b/docs/DEVELOPMENT.md
@@ -440,7 +440,7 @@ mvn clean install
 
 # Frontend coverage
 cd frontend
-npm test -- --coverage
+npm test
 # View: coverage/lcov-report/index.html
 ```
 
diff --git a/docs/SETUP.md b/docs/SETUP.md
index 181a62270..fcb76366b 100644
--- a/docs/SETUP.md
+++ b/docs/SETUP.md
@@ -130,7 +130,7 @@ cd frontend
 npm start
 ```
 
-This starts a development server on http://localhost:3000 with live reloading.
+This starts a development server on http://localhost:5173 with live reloading.
 
 **Note**: The development server needs the backend running separately on port 8080.
 
@@ -165,12 +165,22 @@ Main configuration files:
 
 **API Endpoint Configuration**:
 
-Edit `frontend/src/constant.ts`:
+The frontend uses relative API paths (e.g. `/logic/...`). When served by the Spring Boot JAR both frontend and API share the same origin, so no extra configuration is needed.
+
+During local frontend development (Vite dev server on port 5173), `vite.config.ts` proxies `/logic` requests to the backend on port 8080:
+
+```typescript
+server: {
+  proxy: {
+    '/logic': 'http://localhost:8080',
+  },
+},
+```
+
+The only frontend constant that controls behaviour is the logic type in `frontend/src/constant.ts`:
 
 ```typescript
-export const API_BASE_URL = process.env.REACT_APP_API_URL || 'http://localhost:8080';
-export const CLASSICAL_API = `${API_BASE_URL}/api/classical`;
-export const MODAL_API = `${API_BASE_URL}/api/modal`;
+export const LOGIC: string = 'classical';
 ```
 
 ## Running Tests
@@ -187,7 +197,7 @@ mvn clean test
 mvn test -pl domain/logic-language/framework
 ```
 
-**Run with coverage**:
+**Run with coverage (coverage is collected by default)**:
 ```powershell
 mvn clean install
 ```
@@ -196,22 +206,17 @@ Coverage reports are generated in: `target/site/jacoco/index.html`
 
 ### Frontend Tests
 
-**Run all tests**:
+**Run all tests** (coverage is collected by default):
 ```powershell
 cd frontend
 npm test
 ```
 
-**Run with coverage**:
-```powershell
-npm test -- --coverage
-```
-
 Coverage report: `frontend/coverage/lcov-report/index.html`
 
 **Run specific test file**:
 ```powershell
-npm test -- Expressions.test.tsx
+npm test -- --testPathPattern=Expressions
 ```
 
 ## Docker Deployment
@@ -345,7 +350,7 @@ cd frontend
 npm start
 ```
 
-Access at: http://localhost:3000 (frontend will proxy API calls to backend)
+Access at: http://localhost:5173 — Vite proxies `/logic` requests to the backend on port 8080 (configured in `frontend/vite.config.ts`).
 
 ## Integration with IDEs
 
diff --git a/frontend/src/constant.ts b/frontend/src/constant.ts
index 3b082537d..0fdf63aae 100644
--- a/frontend/src/constant.ts
+++ b/frontend/src/constant.ts
@@ -1,3 +1 @@
-
-export const BASE_URL: string = "http://localhost:8080/"
-export const LOGIC: string = "classical"
\ No newline at end of file
+export const LOGIC: string = "classical"
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 150d61810..941390a77 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -5,4 +5,9 @@ import react from '@vitejs/plugin-react';
 export default defineConfig({
   plugins: [react()],
   publicDir: 'public',
+  server: {
+    proxy: {
+      '/logic': 'http://localhost:8080',
+    },
+  },
 });