Cahnge the pages

backend/package.json

 {
-  "name": "scenario-learning-backend",
+  "name": "mcq-backend",
   "version": "1.0.0",
-  "description": "Backend for Scenario Learning Platform",
-  "main": "src/app.js",
+  "main": "server.js",
   "scripts": {
-    "start": "node src/app.js",
-    "dev": "nodemon src/app.js",
-    "test": "jest"
+    "start": "node server.js",
+    "dev": "nodemon server.js"
   },
   "dependencies": {
-    "express": "^4.18.2",
-    "pg": "^8.11.3",
-    "bcrypt": "^5.1.1",
-    "jsonwebtoken": "^9.0.2",
-    "express-validator": "^7.0.1",
+    "bcryptjs": "^2.4.3",
     "cors": "^2.8.5",
-    "helmet": "^7.1.0",
-    "morgan": "^1.10.0",
     "dotenv": "^16.3.1",
-    "express-rate-limit": "^7.1.5"
+    "express": "^4.18.2",
+    "express-validator": "^7.0.1",
+    "jsonwebtoken": "^9.0.2",
+    "mysql2": "^3.6.5"
   },
   "devDependencies": {
-    "nodemon": "^3.0.2",
-    "jest": "^29.7.0"
+    "nodemon": "^3.0.2"
   }
 }
\ No newline at end of file

backend/server.js

+const express = require("express");
+const cors = require("cors");
+require("dotenv").config();
+
+const authRoutes = require("./src/routes/auth");
+const quizRoutes = require("./src/routes/quiz");
+const adminRoutes = require("./src/routes/admin");
+const userRoutes = require("./src/routes/user");
+
+const app = express();
+
+app.use(cors());
+app.use(express.json());
+
+app.use("/api/auth", authRoutes);
+app.use("/api/quiz", quizRoutes);
+app.use("/api/admin", adminRoutes);
+app.use("/api/user", userRoutes);
+
+app.use((err, req, res, next) => {
+  console.error(err.stack);
+  res.status(500).json({ message: "Server Error", error: err.message });
+});
+
+const PORT = process.env.PORT || 5000;
+app.listen(PORT, () => console.log(`Server running on port ${PORT}`));

backend/src/app.js

-const express = require("express");
-const cors = require("cors");
-const helmet = require("helmet");
-const morgan = require("morgan");
-const rateLimit = require("express-rate-limit");
-require("dotenv").config();
-
-const authRoutes = require("./routes/auth");
-const scenarioRoutes = require("./routes/scenarios");
-const progressRoutes = require("./routes/progress");
-const errorHandler = require("./middleware/errorHandler");
-
-const app = express();
-
-// Security middleware
-app.use(helmet());
-app.use(
-  cors({
-    origin: process.env.FRONTEND_URL || "http://localhost:3000",
-    credentials: true,
-  })
-);
-
-// Rate limiting
-const limiter = rateLimit({
-  windowMs: 15 * 60 * 1000, // 15 minutes
-  max: 1000, // limit each IP to 100 requests per windowMs
-});
-app.use("/api/", limiter);
-
-// Auth rate limiting (stricter)
-const authLimiter = rateLimit({
-  windowMs: 15 * 60 * 1000,
-  max: 10,
-  message: {
-    success: false,
-    message: "Too many attempts, please try again later",
-  },
-});
-app.use("/api/auth/login", authLimiter);
-app.use("/api/auth/register", authLimiter);
-
-// Body parsing
-app.use(express.json());
-app.use(express.urlencoded({ extended: true }));
-
-// Logging
-if (process.env.NODE_ENV !== "test") {
-  app.use(morgan("combined"));
-}
-
-// Health check
-app.get("/health", (req, res) => {
-  res.json({ status: "OK", timestamp: new Date().toISOString() });
-});
-
-// Routes
-app.use("/api/auth", authRoutes);
-app.use("/api/scenarios", scenarioRoutes);
-app.use("/api/progress", progressRoutes);
-
-// 404 handler
-app.use((req, res) => {
-  res.status(404).json({
-    success: false,
-    message: "Endpoint not found",
-  });
-});
-
-// Error handler
-app.use(errorHandler);
-
-const PORT = process.env.PORT || 5000;
-
-app.listen(PORT, () => {
-  console.log(`Server running on port ${PORT}`);
-  console.log(`Environment: ${process.env.NODE_ENV || "development"}`);
-});
-
-module.exports = app;

backend/src/config/database.js

-// src/config/database.js
-const { Pool } = require("pg");
+const mysql = require("mysql2/promise");
 require("dotenv").config();
 
-const pool = new Pool({
+const pool = mysql.createPool({
   host: process.env.DB_HOST,
-  port: process.env.DB_PORT,
-  database: process.env.DB_NAME,
   user: process.env.DB_USER,
   password: process.env.DB_PASSWORD,
-  max: 20,
-  idleTimeoutMillis: 30000,
-  connectionTimeoutMillis: 2000,
-});
-
-pool.on("connect", () => {
-  console.log("Database connected successfully");
-});
-
-pool.on("error", (err) => {
-  console.error("Unexpected error on idle client", err);
-  process.exit(-1);
+  database: process.env.DB_NAME,
+  waitForConnections: true,
+  connectionLimit: 10,
+  queueLimit: 0,
 });
 
-module.exports = {
-  query: (text, params) => pool.query(text, params),
-  getClient: () => pool.connect(),
-  pool,
-};
+module.exports = pool;

backend/src/controllers/adminController.js

+const pool = require("../config/database");
+
+exports.getDashboard = async (req, res) => {
+  try {
+    const [userCount] = await pool.execute(
+      "SELECT COUNT(*) as count FROM users"
+    );
+    const [quizCount] = await pool.execute(
+      "SELECT COUNT(*) as count FROM quizzes"
+    );
+    const [scenarioCount] = await pool.execute(
+      "SELECT COUNT(*) as count FROM scenarios"
+    );
+    const [attemptCount] = await pool.execute(
+      'SELECT COUNT(*) as count FROM quiz_attempts WHERE status = "completed"'
+    );
+    const [recentAttempts] = await pool.execute(`
+            SELECT qa.*, u.username, q.title as quiz_title 
+            FROM quiz_attempts qa 
+            JOIN users u ON qa.user_id = u.id 
+            JOIN quizzes q ON qa.quiz_id = q.id 
+            ORDER BY qa.completed_at DESC LIMIT 10
+        `);
+    res.json({
+      stats: {
+        users: userCount[0].count,
+        quizzes: quizCount[0].count,
+        scenarios: scenarioCount[0].count,
+        attempts: attemptCount[0].count,
+      },
+      recentAttempts,
+    });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getAllUsers = async (req, res) => {
+  try {
+    const [users] = await pool.execute(
+      "SELECT id, username, email, role, total_score, quizzes_taken, created_at FROM users ORDER BY created_at DESC"
+    );
+    res.json(users);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.updateUser = async (req, res) => {
+  try {
+    const { username, email, role } = req.body;
+    await pool.execute(
+      "UPDATE users SET username = ?, email = ?, role = ? WHERE id = ?",
+      [username, email, role, req.params.id]
+    );
+    res.json({ message: "User updated successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.deleteUser = async (req, res) => {
+  try {
+    await pool.execute("DELETE FROM users WHERE id = ?", [req.params.id]);
+    res.json({ message: "User deleted successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getAllScenarios = async (req, res) => {
+  try {
+    const [scenarios] = await pool.execute(
+      "SELECT * FROM scenarios ORDER BY created_at DESC"
+    );
+    res.json(scenarios);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.createScenario = async (req, res) => {
+  try {
+    const {
+      id,
+      title,
+      short_description,
+      givens_table,
+      scenario_paragraph,
+      best_answer,
+      best_answer_rationale,
+      other_option1,
+      other_option1_exp,
+      other_option2,
+      other_option2_exp,
+      other_option3,
+      other_option3_exp,
+      event_type,
+      difficulty,
+      category,
+    } = req.body;
+    await pool.execute(
+      `
+            INSERT INTO scenarios (id, title, short_description, givens_table, scenario_paragraph, best_answer, best_answer_rationale, other_option1, other_option1_exp, other_option2, other_option2_exp, other_option3, other_option3_exp, event_type, difficulty, category)
+            VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+        `,
+      [
+        id,
+        title,
+        short_description,
+        JSON.stringify(givens_table),
+        scenario_paragraph,
+        best_answer,
+        best_answer_rationale,
+        other_option1,
+        other_option1_exp,
+        other_option2,
+        other_option2_exp,
+        other_option3,
+        other_option3_exp,
+        event_type,
+        difficulty,
+        category,
+      ]
+    );
+    res.status(201).json({ message: "Scenario created successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.updateScenario = async (req, res) => {
+  try {
+    const {
+      title,
+      short_description,
+      givens_table,
+      scenario_paragraph,
+      best_answer,
+      best_answer_rationale,
+      other_option1,
+      other_option1_exp,
+      other_option2,
+      other_option2_exp,
+      other_option3,
+      other_option3_exp,
+      event_type,
+      difficulty,
+      category,
+      is_active,
+    } = req.body;
+    await pool.execute(
+      `
+            UPDATE scenarios SET title = ?, short_description = ?, givens_table = ?, scenario_paragraph = ?, best_answer = ?, best_answer_rationale = ?, other_option1 = ?, other_option1_exp = ?, other_option2 = ?, other_option2_exp = ?, other_option3 = ?, other_option3_exp = ?, event_type = ?, difficulty = ?, category = ?, is_active = ?
+            WHERE id = ?
+        `,
+      [
+        title,
+        short_description,
+        JSON.stringify(givens_table),
+        scenario_paragraph,
+        best_answer,
+        best_answer_rationale,
+        other_option1,
+        other_option1_exp,
+        other_option2,
+        other_option2_exp,
+        other_option3,
+        other_option3_exp,
+        event_type,
+        difficulty,
+        category,
+        is_active,
+        req.params.id,
+      ]
+    );
+    res.json({ message: "Scenario updated successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.deleteScenario = async (req, res) => {
+  try {
+    await pool.execute("DELETE FROM scenarios WHERE id = ?", [req.params.id]);
+    res.json({ message: "Scenario deleted successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getAllQuizzes = async (req, res) => {
+  try {
+    const [quizzes] = await pool.execute(`
+            SELECT q.*, u.username as creator_name,
+            (SELECT COUNT(*) FROM quiz_scenarios WHERE quiz_id = q.id) as question_count
+            FROM quizzes q
+            LEFT JOIN users u ON q.created_by = u.id
+            ORDER BY q.created_at DESC
+        `);
+    res.json(quizzes);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.createQuiz = async (req, res) => {
+  try {
+    const { title, description, time_limit, passing_score, scenario_ids } =
+      req.body;
+    const [result] = await pool.execute(
+      "INSERT INTO quizzes (title, description, time_limit, passing_score, created_by) VALUES (?, ?, ?, ?, ?)",
+      [title, description, time_limit, passing_score, req.user.id]
+    );
+    const quizId = result.insertId;
+    for (let i = 0; i < scenario_ids.length; i++) {
+      await pool.execute(
+        "INSERT INTO quiz_scenarios (quiz_id, scenario_id, question_order) VALUES (?, ?, ?)",
+        [quizId, scenario_ids[i], i + 1]
+      );
+    }
+    res.status(201).json({ message: "Quiz created successfully", quizId });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.updateQuiz = async (req, res) => {
+  try {
+    const {
+      title,
+      description,
+      time_limit,
+      passing_score,
+      is_active,
+      scenario_ids,
+    } = req.body;
+    await pool.execute(
+      "UPDATE quizzes SET title = ?, description = ?, time_limit = ?, passing_score = ?, is_active = ? WHERE id = ?",
+      [title, description, time_limit, passing_score, is_active, req.params.id]
+    );
+    if (scenario_ids) {
+      await pool.execute("DELETE FROM quiz_scenarios WHERE quiz_id = ?", [
+        req.params.id,
+      ]);
+      for (let i = 0; i < scenario_ids.length; i++) {
+        await pool.execute(
+          "INSERT INTO quiz_scenarios (quiz_id, scenario_id, question_order) VALUES (?, ?, ?)",
+          [req.params.id, scenario_ids[i], i + 1]
+        );
+      }
+    }
+    res.json({ message: "Quiz updated successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.deleteQuiz = async (req, res) => {
+  try {
+    await pool.execute("DELETE FROM quizzes WHERE id = ?", [req.params.id]);
+    res.json({ message: "Quiz deleted successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};

backend/src/controllers/authController.js

-// src/controllers/authController.js
+const bcrypt = require("bcryptjs");
 const jwt = require("jsonwebtoken");
-const crypto = require("crypto");
-const User = require("../models/User");
-const jwtConfig = require("../config/jwt");
+const pool = require("../config/database");
 
-const generateTokens = (user) => {
-  const accessToken = jwt.sign(
-    { userId: user.id, email: user.email, username: user.username },
-    jwtConfig.accessToken.secret,
-    { expiresIn: jwtConfig.accessToken.expiry }
-  );
-
-  const refreshToken = jwt.sign(
-    { userId: user.id, tokenId: crypto.randomUUID() },
-    jwtConfig.refreshToken.secret,
-    { expiresIn: jwtConfig.refreshToken.expiry }
-  );
-
-  return { accessToken, refreshToken };
-};
-
-const register = async (req, res, next) => {
+exports.register = async (req, res) => {
   try {
     const { username, email, password } = req.body;
-
-    // Check if user already exists
-    const existingEmail = await User.findByEmail(email);
-    if (existingEmail) {
-      return res.status(409).json({
-        success: false,
-        message: "Email already registered",
-      });
-    }
-
-    const existingUsername = await User.findByUsername(username);
-    if (existingUsername) {
-      return res.status(409).json({
-        success: false,
-        message: "Username already taken",
-      });
+    const [existing] = await pool.execute(
+      "SELECT id FROM users WHERE email = ? OR username = ?",
+      [email, username]
+    );
+    if (existing.length > 0) {
+      return res.status(400).json({ message: "User already exists" });
     }
-
-    // Create user
-    const user = await User.create({ username, email, password });
-
-    // Generate tokens
-    const { accessToken, refreshToken } = generateTokens(user);
-
-    // Hash and store refresh token
-    const refreshTokenHash = crypto
-      .createHash("sha256")
-      .update(refreshToken)
-      .digest("hex");
-
-    const expiresAt = new Date(Date.now() + 7 * 24 * 60 * 60 * 1000); // 7 days
-    await User.saveRefreshToken(
-      user.id,
-      refreshTokenHash,
-      expiresAt,
-      req.ip,
-      req.headers["user-agent"]
+    const salt = await bcrypt.genSalt(10);
+    const hashedPassword = await bcrypt.hash(password, salt);
+    const [result] = await pool.execute(
+      "INSERT INTO users (username, email, password) VALUES (?, ?, ?)",
+      [username, email, hashedPassword]
     );
-
+    const token = jwt.sign({ id: result.insertId }, process.env.JWT_SECRET, {
+      expiresIn: process.env.JWT_EXPIRE,
+    });
     res.status(201).json({
-      success: true,
-      message: "Registration successful",
-      data: {
-        user: {
-          id: user.id,
-          username: user.username,
-          email: user.email,
-        },
-        accessToken,
-        refreshToken,
-      },
+      token,
+      user: { id: result.insertId, username, email, role: "user" },
     });
   } catch (error) {
-    next(error);
+    res.status(500).json({ message: "Server error", error: error.message });
   }
 };
 
-const login = async (req, res, next) => {
+exports.login = async (req, res) => {
   try {
     const { email, password } = req.body;
-
-    // Find user
-    const user = await User.findByEmail(email);
-    if (!user) {
-      return res.status(401).json({
-        success: false,
-        message: "Invalid email or password",
-      });
+    const [users] = await pool.execute("SELECT * FROM users WHERE email = ?", [
+      email,
+    ]);
+    if (users.length === 0) {
+      return res.status(400).json({ message: "Invalid credentials" });
     }
-
-    // Verify password
-    const isValidPassword = await User.verifyPassword(
-      password,
-      user.password_hash
-    );
-    if (!isValidPassword) {
-      return res.status(401).json({
-        success: false,
-        message: "Invalid email or password",
-      });
+    const user = users[0];
+    const isMatch = await bcrypt.compare(password, user.password);
+    if (!isMatch) {
+      return res.status(400).json({ message: "Invalid credentials" });
     }
-
-    // Generate tokens
-    const { accessToken, refreshToken } = generateTokens(user);
-
-    // Hash and store refresh token
-    const refreshTokenHash = crypto
-      .createHash("sha256")
-      .update(refreshToken)
-      .digest("hex");
-    console.log("refreshToken=>", refreshToken);
-    console.log("refreshTokenHash=>", refreshTokenHash);
-    const expiresAt = new Date(Date.now() + 7 * 24 * 60 * 60 * 1000);
-    const r = await User.saveRefreshToken(
-      user.id,
-      refreshTokenHash,
-      expiresAt,
-      req.ip,
-      req.headers["user-agent"]
-    );
-    console.log("RR=>", r);
-    res.json({
-      success: true,
-      message: "Login successful",
-      data: {
-        user: {
-          id: user.id,
-          username: user.username,
-          email: user.email,
-        },
-        accessToken,
-        refreshToken,
-      },
+    const token = jwt.sign({ id: user.id }, process.env.JWT_SECRET, {
+      expiresIn: process.env.JWT_EXPIRE,
     });
-  } catch (error) {
-    next(error);
-  }
-};
-
-const refreshToken = async (req, res, next) => {
-  try {
-    const { refreshToken: token } = req.body;
-
-    if (!token) {
-      return res.status(400).json({
-        success: false,
-        message: "Refresh token required",
-      });
-    }
-
-    // Verify token
-    let decoded;
-    try {
-      decoded = jwt.verify(token, jwtConfig.refreshToken.secret);
-    } catch (err) {
-      return res.status(401).json({
-        success: false,
-        message: "Invalid refresh token",
-      });
-    }
-
-    // Check if token exists in database
-    const tokenHash = crypto.createHash("sha256").update(token).digest("hex");
-    console.log("Token=>>", token);
-    console.log("tokenHash=>>", tokenHash);
-    const storedToken = await User.findRefreshToken(tokenHash);
-    console.log("storedToken", storedToken);
-    if (!storedToken) {
-      return res.status(401).json({
-        success: false,
-        message: "Refresh token not found or expired",
-      });
-    }
-
-    // Get user
-    const user = await User.findById(decoded.userId);
-    if (!user) {
-      return res.status(401).json({
-        success: false,
-        message: "User not found",
-      });
-    }
-
-    const tokens = generateTokens(user);
-
-    const newTokenHash = crypto
-      .createHash("sha256")
-      .update(tokens.refreshToken)
-      .digest("hex");
-
-    const expiresAt = new Date(Date.now() + 7 * 24 * 60 * 60 * 1000);
-
-    await User.revokeRefreshToken(tokenHash);
-    await User.saveRefreshToken(
-      user.id,
-      newTokenHash,
-      expiresAt,
-      req.ip,
-      req.headers["user-agent"]
-    );
-
     res.json({
-      success: true,
-      data: {
-        accessToken: tokens.accessToken,
-        refreshToken: tokens.refreshToken,
+      token,
+      user: {
+        id: user.id,
+        username: user.username,
+        email: user.email,
+        role: user.role,
       },
     });
   } catch (error) {
-    next(error);
-  }
-};
-
-const logout = async (req, res, next) => {
-  try {
-    const { refreshToken: token } = req.body;
-
-    if (token) {
-      const tokenHash = crypto.createHash("sha256").update(token).digest("hex");
-      await User.revokeRefreshToken(tokenHash);
-    }
-
-    res.json({
-      success: true,
-      message: "Logged out successfully",
-    });
-  } catch (error) {
-    next(error);
+    res.status(500).json({ message: "Server error", error: error.message });
   }
 };
 
-const getProfile = async (req, res, next) => {
+exports.getMe = async (req, res) => {
   try {
-    const user = await User.findById(req.user.userId);
-    if (!user) {
-      return res.status(404).json({
-        success: false,
-        message: "User not found",
-      });
-    }
-
-    const statistics = await User.getStatistics(req.user.userId);
-
-    res.json({
-      success: true,
-      data: {
-        user,
-        statistics,
-      },
-    });
+    const [users] = await pool.execute(
+      "SELECT id, username, email, role, total_score, quizzes_taken, created_at FROM users WHERE id = ?",
+      [req.user.id]
+    );
+    res.json(users[0]);
   } catch (error) {
-    next(error);
+    res.status(500).json({ message: "Server error", error: error.message });
   }
 };
-
-module.exports = {
-  register,
-  login,
-  refreshToken,
-  logout,
-  getProfile,
-};

backend/src/controllers/quizController.js

+const pool = require("../config/database");
+
+exports.getAllQuizzes = async (req, res) => {
+  try {
+    const [quizzes] = await pool.execute(`
+            SELECT q.*, u.username as creator_name, 
+            (SELECT COUNT(*) FROM quiz_scenarios WHERE quiz_id = q.id) as question_count
+            FROM quizzes q 
+            LEFT JOIN users u ON q.created_by = u.id 
+            WHERE q.is_active = TRUE
+            ORDER BY q.created_at DESC
+        `);
+    res.json(quizzes);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getQuizById = async (req, res) => {
+  try {
+    const [quizzes] = await pool.execute("SELECT * FROM quizzes WHERE id = ?", [
+      req.params.id,
+    ]);
+    if (quizzes.length === 0) {
+      return res.status(404).json({ message: "Quiz not found" });
+    }
+    const [scenarios] = await pool.execute(
+      `
+            SELECT s.*, qs.question_order 
+            FROM scenarios s 
+            JOIN quiz_scenarios qs ON s.id = qs.scenario_id 
+            WHERE qs.quiz_id = ? AND s.is_active = TRUE
+            ORDER BY qs.question_order
+        `,
+      [req.params.id]
+    );
+    res.json({ ...quizzes[0], scenarios });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.startQuiz = async (req, res) => {
+  try {
+    const [existing] = await pool.execute(
+      'SELECT * FROM quiz_attempts WHERE user_id = ? AND quiz_id = ? AND status = "in_progress"',
+      [req.user.id, req.params.id]
+    );
+    if (existing.length > 0) {
+      return res.json({
+        attemptId: existing[0].id,
+        message: "Continuing existing attempt",
+      });
+    }
+    const [scenarios] = await pool.execute(
+      "SELECT COUNT(*) as count FROM quiz_scenarios WHERE quiz_id = ?",
+      [req.params.id]
+    );
+    const [result] = await pool.execute(
+      "INSERT INTO quiz_attempts (user_id, quiz_id, total_questions) VALUES (?, ?, ?)",
+      [req.user.id, req.params.id, scenarios[0].count]
+    );
+    res.json({ attemptId: result.insertId });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.submitAnswer = async (req, res) => {
+  try {
+    const { attemptId, scenarioId, selectedAnswer } = req.body;
+    const [scenarios] = await pool.execute(
+      "SELECT * FROM scenarios WHERE id = ?",
+      [scenarioId]
+    );
+    if (scenarios.length === 0) {
+      return res.status(404).json({ message: "Scenario not found" });
+    }
+    const scenario = scenarios[0];
+    const isCorrect = selectedAnswer === scenario.best_answer;
+    await pool.execute(
+      "INSERT INTO user_scenario_history (user_id, scenario_id, selected_answer, is_correct, attempt_id) VALUES (?, ?, ?, ?, ?)",
+      [req.user.id, scenarioId, selectedAnswer, isCorrect, attemptId]
+    );
+    const [attempt] = await pool.execute(
+      "SELECT answers FROM quiz_attempts WHERE id = ?",
+      [attemptId]
+    );
+    let answers = attempt[0].answers ? JSON.parse(attempt[0].answers) : {};
+    answers[scenarioId] = { selectedAnswer, isCorrect };
+    const correctCount = Object.values(answers).filter(
+      (a) => a.isCorrect
+    ).length;
+    await pool.execute(
+      "UPDATE quiz_attempts SET answers = ?, correct_answers = ? WHERE id = ?",
+      [JSON.stringify(answers), correctCount, attemptId]
+    );
+    res.json({
+      isCorrect,
+      correctAnswer: scenario.best_answer,
+      rationale: scenario.best_answer_rationale,
+    });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.completeQuiz = async (req, res) => {
+  try {
+    const { attemptId, timeTaken } = req.body;
+    const [attempts] = await pool.execute(
+      "SELECT * FROM quiz_attempts WHERE id = ? AND user_id = ?",
+      [attemptId, req.user.id]
+    );
+    if (attempts.length === 0) {
+      return res.status(404).json({ message: "Attempt not found" });
+    }
+    const attempt = attempts[0];
+    const score = Math.round(
+      (attempt.correct_answers / attempt.total_questions) * 100
+    );
+    await pool.execute(
+      'UPDATE quiz_attempts SET status = "completed", score = ?, time_taken = ?, completed_at = NOW() WHERE id = ?',
+      [score, timeTaken || 0, attemptId]
+    );
+    await pool.execute(
+      "UPDATE users SET total_score = total_score + ?, quizzes_taken = quizzes_taken + 1 WHERE id = ?",
+      [score, req.user.id]
+    );
+    res.json({
+      score,
+      correctAnswers: attempt.correct_answers,
+      totalQuestions: attempt.total_questions,
+    });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getQuizResult = async (req, res) => {
+  try {
+    const [attempts] = await pool.execute(
+      `
+            SELECT qa.*, q.title as quiz_title 
+            FROM quiz_attempts qa 
+            JOIN quizzes q ON qa.quiz_id = q.id 
+            WHERE qa.id = ? AND qa.user_id = ?
+        `,
+      [req.params.attemptId, req.user.id]
+    );
+    if (attempts.length === 0) {
+      return res.status(404).json({ message: "Result not found" });
+    }
+    res.json(attempts[0]);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getAllScenarios = async (req, res) => {
+  try {
+    const [scenarios] = await pool.execute(
+      "SELECT id, title, short_description, event_type, difficulty, category FROM scenarios WHERE is_active = TRUE"
+    );
+    res.json(scenarios);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getScenarioById = async (req, res) => {
+  try {
+    const [scenarios] = await pool.execute(
+      "SELECT * FROM scenarios WHERE id = ?",
+      [req.params.id]
+    );
+    if (scenarios.length === 0) {
+      return res.status(404).json({ message: "Scenario not found" });
+    }
+    res.json(scenarios[0]);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};

backend/src/controllers/userController.js

+const bcrypt = require("bcryptjs");
+const pool = require("../config/database");
+
+exports.getProfile = async (req, res) => {
+  try {
+    const [users] = await pool.execute(
+      "SELECT id, username, email, role, total_score, quizzes_taken, avatar, created_at FROM users WHERE id = ?",
+      [req.user.id]
+    );
+    res.json(users[0]);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.updateProfile = async (req, res) => {
+  try {
+    const { username, email } = req.body;
+    await pool.execute(
+      "UPDATE users SET username = ?, email = ? WHERE id = ?",
+      [username, email, req.user.id]
+    );
+    res.json({ message: "Profile updated successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.changePassword = async (req, res) => {
+  try {
+    const { currentPassword, newPassword } = req.body;
+    const [users] = await pool.execute(
+      "SELECT password FROM users WHERE id = ?",
+      [req.user.id]
+    );
+    const isMatch = await bcrypt.compare(currentPassword, users[0].password);
+    if (!isMatch) {
+      return res.status(400).json({ message: "Current password is incorrect" });
+    }
+    const salt = await bcrypt.genSalt(10);
+    const hashedPassword = await bcrypt.hash(newPassword, salt);
+    await pool.execute("UPDATE users SET password = ? WHERE id = ?", [
+      hashedPassword,
+      req.user.id,
+    ]);
+    res.json({ message: "Password changed successfully" });
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getHistory = async (req, res) => {
+  try {
+    const [attempts] = await pool.execute(
+      `
+            SELECT qa.*, q.title as quiz_title
+            FROM quiz_attempts qa
+            JOIN quizzes q ON qa.quiz_id = q.id
+            WHERE qa.user_id = ?
+            ORDER BY qa.started_at DESC
+        `,
+      [req.user.id]
+    );
+    res.json(attempts);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};
+
+exports.getLeaderboard = async (req, res) => {
+  try {
+    const [leaderboard] = await pool.execute(`
+            SELECT id, username, total_score, quizzes_taken, avatar
+            FROM users
+            WHERE quizzes_taken > 0
+            ORDER BY total_score DESC, quizzes_taken DESC
+            LIMIT 50
+        `);
+    res.json(leaderboard);
+  } catch (error) {
+    res.status(500).json({ message: "Server error", error: error.message });
+  }
+};

backend/src/middleware/admin.js

+module.exports = (req, res, next) => {
+  if (req.user.role !== "admin") {
+    return res.status(403).json({ message: "Access denied. Admin only." });
+  }
+  next();
+};

backend/src/middleware/auth.js

-// src/middleware/auth.js
 const jwt = require("jsonwebtoken");
-const jwtConfig = require("../config/jwt");
-
-const authenticateToken = (req, res, next) => {
-  const authHeader = req.headers["authorization"];
-  const token = authHeader && authHeader.split(" ")[1]; // Bearer TOKEN
-
-  if (!token) {
-    return res.status(401).json({
-      success: false,
-      message: "Access token required",
-    });
-  }
-
-  jwt.verify(token, jwtConfig.accessToken.secret, (err, decoded) => {
-    if (err) {
-      if (err.name === "TokenExpiredError") {
-        return res.status(401).json({
-          success: false,
-          message: "Token expired",
-          code: "TOKEN_EXPIRED",
-        });
-      }
-      return res.status(403).json({
-        success: false,
-        message: "Invalid token",
-      });
+const pool = require("../config/database");
+
+module.exports = async (req, res, next) => {
+  try {
+    const token = req.header("Authorization")?.replace("Bearer ", "");
+    if (!token) {
+      return res
+        .status(401)
+        .json({ message: "No token, authorization denied" });
     }
-
-    req.user = decoded;
+    const decoded = jwt.verify(token, process.env.JWT_SECRET);
+    const [users] = await pool.execute(
+      "SELECT id, username, email, role FROM users WHERE id = ?",
+      [decoded.id]
+    );
+    if (users.length === 0) {
+      return res.status(401).json({ message: "Token is not valid" });
+    }
+    req.user = users[0];
     next();
-  });
-};
-
-const optionalAuth = (req, res, next) => {
-  const authHeader = req.headers["authorization"];
-  const token = authHeader && authHeader.split(" ")[1];
-
-  if (!token) {
-    return next();
+  } catch (error) {
+    res.status(401).json({ message: "Token is not valid" });
   }
-
-  jwt.verify(token, jwtConfig.accessToken.secret, (err, decoded) => {
-    if (!err) {
-      req.user = decoded;
-      console.log("decode", decoded);
-      next();
-    } else if (err) {
-      if (err.name === "TokenExpiredError") {
-        return res.status(401).json({
-          success: false,
-          code: "TOKEN_EXPIRED",
-          message: "Access token expired",
-        });
-      }
-
-      return next();
-    }
-    console.log("err=>", err);
-  });
 };
-
-module.exports = { authenticateToken, optionalAuth };

backend/src/routes/admin.js

+const express = require("express");
+const router = express.Router();
+const {
+  getDashboard,
+  getAllUsers,
+  updateUser,
+  deleteUser,
+  getAllScenarios,
+  createScenario,
+  updateScenario,
+  deleteScenario,
+  getAllQuizzes,
+  createQuiz,
+  updateQuiz,
+  deleteQuiz,
+} = require("../controllers/adminController");
+const auth = require("../middleware/auth");
+const admin = require("../middleware/admin");
+
+router.use(auth, admin);
+
+router.get("/dashboard", getDashboard);
+router.get("/users", getAllUsers);
+router.put("/users/:id", updateUser);
+router.delete("/users/:id", deleteUser);
+router.get("/scenarios", getAllScenarios);
+router.post("/scenarios", createScenario);
+router.put("/scenarios/:id", updateScenario);
+router.delete("/scenarios/:id", deleteScenario);
+router.get("/quizzes", getAllQuizzes);
+router.post("/quizzes", createQuiz);
+router.put("/quizzes/:id", updateQuiz);
+router.delete("/quizzes/:id", deleteQuiz);
+
+module.exports = router;

backend/src/routes/auth.js

 const express = require("express");
 const router = express.Router();
-const authController = require("../controllers/authController");
-const { authenticateToken } = require("../middleware/auth");
-const {
-  registerValidation,
-  loginValidation,
-} = require("../middleware/validation");
+const { register, login, getMe } = require("../controllers/authController");
+const auth = require("../middleware/auth");
 
-router.post("/register", registerValidation, authController.register);
-router.post("/login", loginValidation, authController.login);
-router.post("/refresh-token", authController.refreshToken);
-router.post("/logout", authController.logout);
-router.get("/profile", authenticateToken, authController.getProfile);
+router.post("/register", register);
+router.post("/login", login);
+router.get("/me", auth, getMe);
 
 module.exports = router;

backend/src/routes/progress.js

-const express = require("express");
-const router = express.Router();
-const progressController = require("../controllers/progressController");
-const { authenticateToken } = require("../middleware/auth");
-const {
-  progressValidation,
-  paginationValidation,
-} = require("../middleware/validation");
-
-router.post(
-  "/submit",
-  authenticateToken,
-  progressValidation,
-  progressController.submitAnswer
-);
-router.get(
-  "/",
-  authenticateToken,
-  paginationValidation,
-  progressController.getUserProgress
-);
-router.get(
-  "/leaderboard",
-  paginationValidation,
-  progressController.getLeaderboard
-);
-
-module.exports = router;

backend/src/routes/quiz.js

+const express = require("express");
+const router = express.Router();
+const {
+  getAllQuizzes,
+  getQuizById,
+  startQuiz,
+  submitAnswer,
+  completeQuiz,
+  getQuizResult,
+  getAllScenarios,
+  getScenarioById,
+} = require("../controllers/quizController");
+const auth = require("../middleware/auth");
+
+router.get("/", auth, getAllQuizzes);
+router.get("/scenarios", auth, getAllScenarios);
+router.get("/scenarios/:id", auth, getScenarioById);
+router.get("/:id", auth, getQuizById);
+router.post("/:id/start", auth, startQuiz);
+router.post("/answer", auth, submitAnswer);
+router.post("/complete", auth, completeQuiz);
+router.get("/result/:attemptId", auth, getQuizResult);
+
+module.exports = router;

backend/src/routes/user.js

+const express = require("express");
+const router = express.Router();
+const {
+  getProfile,
+  updateProfile,
+  changePassword,
+  getHistory,
+  getLeaderboard,
+} = require("../controllers/userController");
+const auth = require("../middleware/auth");
+
+router.get("/profile", auth, getProfile);
+router.put("/profile", auth, updateProfile);
+router.put("/password", auth, changePassword);
+router.get("/history", auth, getHistory);
+router.get("/leaderboard", getLeaderboard);
+
+module.exports = router;

captain-definition

 {
   "schemaVersion": 2,
   "dockerfileLines": [
-    "FROM node:22-alpine AS build-step",
+    "FROM node:22-alpine",
     "WORKDIR /app",
     "COPY . .",
-    "RUN cd frontend && npm install && npm run build",
-    "FROM socialengine/nginx-spa:latest",
-    "COPY --from=build-step /app/frontend/dist /app",
-    "RUN chmod -R 777 /app"
+    "RUN cd backend && npm install --production",
+    "EXPOSE 5000",
+    "CMD [\"sh\", \"-c\", \"cd backend && node src/app.js\"]"
   ]
 }
\ No newline at end of file

frontend/index.html

-<!doctype html>
+<!DOCTYPE html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/book-open.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>ScenarioLearn</title>
+    <title>MCQ App - Financial Scenarios</title>
   </head>
   <body>
     <div id="root"></div>

frontend/package.json

 {
-  "name": "frontend",
+  "name": "mcq-frontend",
   "private": true,
   "version": "0.0.0",
   "type": "module",
   "scripts": {
     "dev": "vite",
     "build": "vite build",
-    "lint": "eslint .",
     "preview": "vite preview"
   },
   "dependencies": {
-    "@tailwindcss/postcss": "^4.1.18",
-    "axios": "^1.13.2",
-    "lucide-react": "^0.562.0",
-    "react": "^19.2.3",
-    "react-dom": "^19.2.3",
-    "react-router-dom": "^7.11.0"
+    "axios": "^1.6.2",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-router-dom": "^6.21.0",
+    "react-icons": "^4.12.0",
+    "react-toastify": "^9.1.3"
   },
   "devDependencies": {
-    "@eslint/js": "^9.39.1",
-    "@types/react": "^19.2.5",
-    "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^5.1.2",
-    "autoprefixer": "^10.4.23",
-    "eslint": "^9.39.1",
-    "eslint-plugin-react-hooks": "^7.0.1",
-    "eslint-plugin-react-refresh": "^0.4.24",
-    "globals": "^16.5.0",
-    "postcss": "^8.5.6",
-    "tailwindcss": "^4.1.18",
-    "vite": "^7.3.0"
+    "@types/react": "^18.2.43",
+    "@types/react-dom": "^18.2.17",
+    "@vitejs/plugin-react": "^4.2.1",
+    "autoprefixer": "^10.4.16",
+    "postcss": "^8.4.32",
+    "tailwindcss": "^3.3.6",
+    "vite": "^5.0.8"
   }
-}
+}
\ No newline at end of file

frontend/postcss.config.js

 export default {
   plugins: {
-    "@tailwindcss/postcss": {},
+    tailwindcss: {},
     autoprefixer: {},
   },
 };

frontend/src/App.jsx

-import { BrowserRouter as Router, Routes, Route, Navigate } from 'react-router-dom';
+import { BrowserRouter as Router, Routes, Route } from 'react-router-dom';
+import { ToastContainer } from 'react-toastify';
+import 'react-toastify/dist/ReactToastify.css';
 import { AuthProvider } from './context/AuthContext';
-import Navbar from './components/common/Navbar';
-import ProtectedRoute from './components/common/ProtectedRoute';
-import LoginForm from './components/auth/LoginForm';
-import RegisterForm from './components/auth/RegisterForm';
-import ScenarioDashboard from './components/scenario/ScenarioDashboard';
-import ScenarioDetail from './components/scenario/ScenarioDetail';
-import UserProfile from './components/profile/UserProfile';
+import ProtectedRoute from './components/Auth/ProtectedRoute';
+import Login from './components/Auth/Login';
+import Register from './components/Auth/Register';
+import Navbar from './components/Layout/Navbar';
+import QuizList from './components/Quiz/QuizList';
+import QuizTake from './components/Quiz/QuizTake';
+import QuizResult from './components/Quiz/QuizResult';
+import Profile from './components/User/Profile';
+import History from './components/User/History';
+import Leaderboard from './components/User/Leaderboard';
+import Dashboard from './components/Admin/Dashboard';
+import ScenarioManager from './components/Admin/ScenarioManager';
+import UserManager from './components/Admin/UserManager';
+import QuizManager from './components/Admin/QuizManager';
 
 function App() {
-    return (
-         <Router>
-        <AuthProvider>
-           
-                <div className="min-h-screen bg-gray-50">
-                    <Navbar />
-                    <main>
-                        <Routes>
-                            <Route path="/" element={<Navigate to="/scenarios" replace />} />
-                            <Route path="/login" element={<LoginForm />} />
-                            <Route path="/register" element={<RegisterForm />} />
-                            <Route path="/scenarios" element={<ScenarioDashboard />} />
-                            <Route path="/scenarios/:id" element={<ScenarioDetail />} />
-                            <Route 
-                                path="/profile" 
-                                element={
-                                    <ProtectedRoute>
-                                        <UserProfile />
-                                    </ProtectedRoute>
-                                } 
-                            />
-                        </Routes>
-                    </main>
-                </div>
-          
-        </AuthProvider>
-          </Router>
-    );
+  return (
+    <AuthProvider>
+      <Router>
+        <div className="min-h-screen bg-gray-100">
+          <Navbar />
+          <main className="container mx-auto px-4 py-8">
+            <Routes>
+              <Route path="/login" element={<Login />} />
+              <Route path="/register" element={<Register />} />
+              <Route path="/" element={<ProtectedRoute><QuizList /></ProtectedRoute>} />
+              <Route path="/quiz/:id" element={<ProtectedRoute><QuizTake /></ProtectedRoute>} />
+              <Route path="/result/:attemptId" element={<ProtectedRoute><QuizResult /></ProtectedRoute>} />
+              <Route path="/profile" element={<ProtectedRoute><Profile /></ProtectedRoute>} />
+              <Route path="/history" element={<ProtectedRoute><History /></ProtectedRoute>} />
+              <Route path="/leaderboard" element={<Leaderboard />} />
+              <Route path="/admin" element={<ProtectedRoute adminOnly><Dashboard /></ProtectedRoute>} />
+              <Route path="/admin/scenarios" element={<ProtectedRoute adminOnly><ScenarioManager /></ProtectedRoute>} />
+              <Route path="/admin/users" element={<ProtectedRoute adminOnly><UserManager /></ProtectedRoute>} />
+              <Route path="/admin/quizzes" element={<ProtectedRoute adminOnly><QuizManager /></ProtectedRoute>} />
+            </Routes>
+          </main>
+          <ToastContainer position="bottom-right" />
+        </div>
+      </Router>
+    </AuthProvider>
+  );
 }
 
 export default App;
\ No newline at end of file

frontend/src/components/Admin/Dashboard.jsx

+import { useState, useEffect } from 'react';
+import { Link } from 'react-router-dom';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import { FiUsers, FiFileText, FiList, FiCheckCircle } from 'react-icons/fi';
+
+export default function Dashboard() {
+  const [data, setData] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    api.get('/admin/dashboard').then(res => setData(res.data)).finally(() => setLoading(false));
+  }, []);
+
+  if (loading) return <Loading />;
+
+  const stats = [
+    { label: 'Total Users', value: data.stats.users, icon: FiUsers, color: 'bg-blue-500', link: '/admin/users' },
+    { label: 'Quizzes', value: data.stats.quizzes, icon: FiList, color: 'bg-green-500', link: '/admin/quizzes' },
+    { label: 'Scenarios', value: data.stats.scenarios, icon: FiFileText, color: 'bg-purple-500', link: '/admin/scenarios' },
+    { label: 'Attempts', value: data.stats.attempts, icon: FiCheckCircle, color: 'bg-orange-500', link: '#' }
+  ];
+
+  return (
+    <div>
+      <h1 className="text-3xl font-bold text-gray-800 mb-8">Admin Dashboard</h1>
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6 mb-8">
+        {stats.map((stat, index) => (
+          <Link key={index} to={stat.link} className="bg-white rounded-xl shadow-lg p-6 card-hover">
+            <div className={`w-12 h-12 ${stat.color} rounded-lg flex items-center justify-center mb-4`}>
+              <stat.icon className="text-white" size={24} />
+            </div>
+            <div className="text-3xl font-bold text-gray-800">{stat.value}</div>
+            <div className="text-gray-500">{stat.label}</div>
+          </Link>
+        ))}
+      </div>
+      <div className="bg-white rounded-xl shadow-lg p-6">
+        <h2 className="text-xl font-semibold text-gray-800 mb-4">Recent Activity</h2>
+        {data.recentAttempts.length === 0 ? (
+          <p className="text-gray-500">No recent activity</p>
+        ) : (
+          <div className="overflow-x-auto">
+            <table className="w-full">
+              <thead className="bg-gray-50">
+                <tr>
+                  <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">User</th>
+                  <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Quiz</th>
+                  <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Score</th>
+                  <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Date</th>
+                </tr>
+              </thead>
+              <tbody className="divide-y divide-gray-200">
+                {data.recentAttempts.map(attempt => (
+                  <tr key={attempt.id}>
+                    <td className="px-4 py-2 text-gray-800">{attempt.username}</td>
+                    <td className="px-4 py-2 text-gray-600">{attempt.quiz_title}</td>
+                    <td className="px-4 py-2">
+                      <span className={attempt.score >= 60 ? 'text-green-600' : 'text-red-600'}>{attempt.score}%</span>
+                    </td>
+                    <td className="px-4 py-2 text-gray-500">{attempt.completed_at ? new Date(attempt.completed_at).toLocaleString() : '-'}</td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/Admin/QuizManager.jsx

+import { useState, useEffect } from 'react';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import Modal from '../Common/Modal';
+import { toast } from 'react-toastify';
+import { FiPlus, FiEdit2, FiTrash2, FiSave } from 'react-icons/fi';
+
+const emptyQuiz = { title: '', description: '', time_limit: 0, passing_score: 60, scenario_ids: [] };
+
+export default function QuizManager() {
+  const [quizzes, setQuizzes] = useState([]);
+  const [scenarios, setScenarios] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [editQuiz, setEditQuiz] = useState(null);
+  const [showModal, setShowModal] = useState(false);
+  const [isNew, setIsNew] = useState(false);
+
+  const loadData = async () => {
+    const [quizzesRes, scenariosRes] = await Promise.all([api.get('/admin/quizzes'), api.get('/admin/scenarios')]);
+    setQuizzes(quizzesRes.data);
+    setScenarios(scenariosRes.data);
+    setLoading(false);
+  };
+
+  useEffect(() => { loadData(); }, []);
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    try {
+      if (isNew) {
+        await api.post('/admin/quizzes', editQuiz);
+        toast.success('Quiz created successfully');
+      } else {
+        await api.put(`/admin/quizzes/${editQuiz.id}`, editQuiz);
+        toast.success('Quiz updated successfully');
+      }
+      setShowModal(false);
+      loadData();
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Operation failed');
+    }
+  };
+
+  const handleDelete = async (id) => {
+    if (!confirm('Are you sure you want to delete this quiz?')) return;
+    try {
+      await api.delete(`/admin/quizzes/${id}`);
+      toast.success('Quiz deleted successfully');
+      loadData();
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Delete failed');
+    }
+  };
+
+  const toggleScenario = (scenarioId) => {
+    const ids = editQuiz.scenario_ids || [];
+    if (ids.includes(scenarioId)) {
+      setEditQuiz({ ...editQuiz, scenario_ids: ids.filter(id => id !== scenarioId) });
+    } else {
+      setEditQuiz({ ...editQuiz, scenario_ids: [...ids, scenarioId] });
+    }
+  };
+
+  if (loading) return <Loading />;
+
+  return (
+    <div>
+      <div className="flex justify-between items-center mb-8">
+        <h1 className="text-3xl font-bold text-gray-800">Manage Quizzes</h1>
+        <button onClick={() => { setEditQuiz(emptyQuiz); setIsNew(true); setShowModal(true); }} className="flex items-center gap-2 bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700">
+          <FiPlus /> Add Quiz
+        </button>
+      </div>
+      <div className="bg-white rounded-xl shadow-lg overflow-hidden">
+        <table className="w-full">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Title</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Questions</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Time Limit</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Pass Score</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Status</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Actions</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200">
+            {quizzes.map(quiz => (
+              <tr key={quiz.id}>
+                <td className="px-6 py-4 font-medium text-gray-800">{quiz.title}</td>
+                <td className="px-6 py-4 text-gray-600">{quiz.question_count}</td>
+                <td className="px-6 py-4 text-gray-600">{quiz.time_limit > 0 ? `${quiz.time_limit} min` : 'No limit'}</td>
+                <td className="px-6 py-4 text-gray-600">{quiz.passing_score}%</td>
+                <td className="px-6 py-4">
+                  <span className={`px-2 py-1 rounded text-sm ${quiz.is_active ? 'bg-green-100 text-green-600' : 'bg-gray-100 text-gray-600'}`}>
+                    {quiz.is_active ? 'Active' : 'Inactive'}
+                  </span>
+                </td>
+                <td className="px-6 py-4">
+                  <button onClick={() => { setEditQuiz({ ...quiz, scenario_ids: [] }); setIsNew(false); setShowModal(true); }} className="text-indigo-600 hover:text-indigo-800 mr-3"><FiEdit2 /></button>
+                  <button onClick={() => handleDelete(quiz.id)} className="text-red-600 hover:text-red-800"><FiTrash2 /></button>
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+      <Modal isOpen={showModal} onClose={() => setShowModal(false)} title={isNew ? 'Add Quiz' : 'Edit Quiz'}>
+        {editQuiz && (
+          <form onSubmit={handleSubmit} className="space-y-4">
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Title</label>
+              <input type="text" value={editQuiz.title} onChange={(e) => setEditQuiz({ ...editQuiz, title: e.target.value })} className="w-full px-4 py-2 border border-gray-300 rounded-lg" required />
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Description</label>
+              <textarea value={editQuiz.description || ''} onChange={(e) => setEditQuiz({ ...editQuiz, description: e.target.value })} className="w-full px-4 py-2 border border-gray-300 rounded-lg" rows="3" />
+            </div>
+            <div className="grid grid-cols-2 gap-4">
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">Time Limit (minutes, 0 for none)</label>
+                <input type="number" value={editQuiz.time_limit} onChange={(e) => setEditQuiz({ ...editQuiz, time_limit: parseInt(e.target.value) })} className="w-full px-4 py-2 border border-gray-300 rounded-lg" min="0" />
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-gray-700 mb-1">Passing Score (%)</label>
+                <input type="number" value={editQuiz.passing_score} onChange={(e) => setEditQuiz({ ...editQuiz, passing_score: parseInt(e.target.value) })} className="w-full px-4 py-2 border border-gray-300 rounded-lg" min="0" max="100" />
+              </div>
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-2">Select Scenarios ({editQuiz.scenario_ids?.length || 0} selected)</label>
+              <div className="max-h-60 overflow-y-auto border border-gray-300 rounded-lg p-2">
+                {scenarios.map(scenario => (
+                  <label key={scenario.id} className="flex items-center gap-2 p-2 hover:bg-gray-50 cursor-pointer">
+                    <input type="checkbox" checked={editQuiz.scenario_ids?.includes(scenario.id)} onChange={() => toggleScenario(scenario.id)} className="rounded text-indigo-600" />
+                    <span className="text-sm text-gray-700">{scenario.title}</span>
+                    <span className={`ml-auto text-xs px-2 py-1 rounded ${scenario.event_type === 'major' ? 'bg-red-100 text-red-600' : 'bg-blue-100 text-blue-600'}`}>
+                      {scenario.event_type}
+                    </span>
+                  </label>
+                ))}
+              </div>
+            </div>
+            <button type="submit" className="flex items-center gap-2 bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700">
+              <FiSave /> {isNew ? 'Create Quiz' : 'Save Changes'}
+            </button>
+          </form>
+        )}
+      </Modal>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/Admin/UserManager.jsx

+import { useState, useEffect } from 'react';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import Modal from '../Common/Modal';
+import { toast } from 'react-toastify';
+import { FiEdit2, FiTrash2, FiSave } from 'react-icons/fi';
+
+export default function UserManager() {
+  const [users, setUsers] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [editUser, setEditUser] = useState(null);
+  const [showModal, setShowModal] = useState(false);
+
+  const loadUsers = () => {
+    api.get('/admin/users').then(res => setUsers(res.data)).finally(() => setLoading(false));
+  };
+
+  useEffect(() => { loadUsers(); }, []);
+
+  const handleUpdate = async (e) => {
+    e.preventDefault();
+    try {
+      await api.put(`/admin/users/${editUser.id}`, editUser);
+      toast.success('User updated successfully');
+      setShowModal(false);
+      loadUsers();
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Update failed');
+    }
+  };
+
+  const handleDelete = async (id) => {
+    if (!confirm('Are you sure you want to delete this user?')) return;
+    try {
+      await api.delete(`/admin/users/${id}`);
+      toast.success('User deleted successfully');
+      loadUsers();
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Delete failed');
+    }
+  };
+
+  if (loading) return <Loading />;
+
+  return (
+    <div>
+      <h1 className="text-3xl font-bold text-gray-800 mb-8">Manage Users</h1>
+      <div className="bg-white rounded-xl shadow-lg overflow-hidden">
+        <table className="w-full">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Username</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Email</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Role</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Score</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Quizzes</th>
+              <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Actions</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200">
+            {users.map(user => (
+              <tr key={user.id}>
+                <td className="px-6 py-4 font-medium text-gray-800">{user.username}</td>
+                <td className="px-6 py-4 text-gray-600">{user.email}</td>
+                <td className="px-6 py-4">
+                  <span className={`px-2 py-1 rounded text-sm ${user.role === 'admin' ? 'bg-red-100 text-red-600' : 'bg-blue-100 text-blue-600'}`}>
+                    {user.role}
+                  </span>
+                </td>
+                <td className="px-6 py-4 text-gray-600">{user.total_score}</td>
+                <td className="px-6 py-4 text-gray-600">{user.quizzes_taken}</td>
+                <td className="px-6 py-4">
+                  <button onClick={() => { setEditUser(user); setShowModal(true); }} className="text-indigo-600 hover:text-indigo-800 mr-3"><FiEdit2 /></button>
+                  <button onClick={() => handleDelete(user.id)} className="text-red-600 hover:text-red-800"><FiTrash2 /></button>
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+      <Modal isOpen={showModal} onClose={() => setShowModal(false)} title="Edit User">
+        {editUser && (
+          <form onSubmit={handleUpdate} className="space-y-4">
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Username</label>
+              <input type="text" value={editUser.username} onChange={(e) => setEditUser({ ...editUser, username: e.target.value })} className="w-full px-4 py-2 border border-gray-300 rounded-lg" required />
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Email</label>
+              <input type="email" value={editUser.email} onChange={(e) => setEditUser({ ...editUser, email: e.target.value })} className="w-full px-4 py-2 border border-gray-300 rounded-lg" required />
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Role</label>
+              <select value={editUser.role} onChange={(e) => setEditUser({ ...editUser, role: e.target.value })} className="w-full px-4 py-2 border border-gray-300 rounded-lg">
+                <option value="user">User</option>
+                <option value="admin">Admin</option>
+              </select>
+            </div>
+            <button type="submit" className="flex items-center gap-2 bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700">
+              <FiSave /> Save Changes
+            </button>
+          </form>
+        )}
+      </Modal>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/Layout/Navbar.jsx

+import { Link, useNavigate } from 'react-router-dom';
+import { useAuth } from '../../context/AuthContext';
+import { FiHome, FiUser, FiLogOut, FiAward, FiClock, FiSettings } from 'react-icons/fi';
+
+export default function Navbar() {
+  const { user, logout } = useAuth();
+  const navigate = useNavigate();
+
+  const handleLogout = () => {
+    logout();
+    navigate('/login');
+  };
+
+  return (
+    <nav className="bg-white shadow-lg">
+      <div className="container mx-auto px-4">
+        <div className="flex justify-between items-center h-16">
+          <Link to="/" className="text-2xl font-bold text-indigo-600">MCQ App</Link>
+          {user ? (
+            <div className="flex items-center gap-6">
+              <Link to="/" className="flex items-center gap-2 text-gray-600 hover:text-indigo-600 transition">
+                <FiHome /> Quizzes
+              </Link>
+              <Link to="/leaderboard" className="flex items-center gap-2 text-gray-600 hover:text-indigo-600 transition">
+                <FiAward /> Leaderboard
+              </Link>
+              <Link to="/history" className="flex items-center gap-2 text-gray-600 hover:text-indigo-600 transition">
+                <FiClock /> History
+              </Link>
+              {user.role === 'admin' && (
+                <Link to="/admin" className="flex items-center gap-2 text-gray-600 hover:text-indigo-600 transition">
+                  <FiSettings /> Admin
+                </Link>
+              )}
+              <Link to="/profile" className="flex items-center gap-2 text-gray-600 hover:text-indigo-600 transition">
+                <FiUser /> {user.username}
+              </Link>
+              <button onClick={handleLogout} className="flex items-center gap-2 text-red-500 hover:text-red-700 transition">
+                <FiLogOut /> Logout
+              </button>
+            </div>
+          ) : (
+            <div className="flex items-center gap-4">
+              <Link to="/login" className="text-gray-600 hover:text-indigo-600 transition">Login</Link>
+              <Link to="/register" className="bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700 transition">Sign Up</Link>
+            </div>
+          )}
+        </div>
+      </div>
+    </nav>
+  );
+}
\ No newline at end of file

frontend/src/components/Quiz/QuestionCard.jsx

+export default function QuestionCard({ scenario, selectedAnswer, onSelectAnswer, showResult, answerResult }) {
+  const givensTable = typeof scenario.givens_table === 'string' ? JSON.parse(scenario.givens_table) : scenario.givens_table;
+  
+  const options = [
+    { text: scenario.best_answer, isCorrect: true },
+    { text: scenario.other_option1, explanation: scenario.other_option1_exp },
+    { text: scenario.other_option2, explanation: scenario.other_option2_exp },
+    { text: scenario.other_option3, explanation: scenario.other_option3_exp }
+  ].sort(() => Math.random() - 0.5);
+
+  const getOptionClass = (option) => {
+    let baseClass = 'quiz-option p-4 rounded-lg border-2 cursor-pointer mb-3';
+    if (!showResult) {
+      return `${baseClass} ${selectedAnswer === option.text ? 'selected' : 'border-gray-200'}`;
+    }
+    if (option.text === answerResult?.correctAnswer) {
+      return `${baseClass} correct`;
+    }
+    if (selectedAnswer === option.text && !answerResult?.isCorrect) {
+      return `${baseClass} incorrect`;
+    }
+    return `${baseClass} border-gray-200`;
+  };
+
+  return (
+    <div className="bg-white rounded-xl shadow-lg overflow-hidden">
+      <div className={`p-4 ${scenario.event_type === 'major' ? 'bg-red-500' : 'bg-blue-500'}`}>
+        <span className="text-white font-semibold uppercase text-sm">{scenario.event_type} Event</span>
+      </div>
+      <div className="p-6">
+        <h2 className="text-xl font-bold text-gray-800 mb-4">{scenario.title}</h2>
+        <p className="text-gray-600 mb-4">{scenario.short_description}</p>
+        {givensTable && (
+          <div className="bg-gray-50 rounded-lg p-4 mb-4">
+            <h3 className="font-semibold text-gray-700 mb-2">Given Information</h3>
+            <div className="grid grid-cols-2 md:grid-cols-3 gap-2">
+              {Object.entries(givensTable).map(([key, value]) => (
+                <div key={key} className="text-sm">
+                  <span className="font-medium text-gray-600">{key}:</span>{' '}
+                  <span className="text-gray-800">{value}</span>
+                </div>
+              ))}
+            </div>
+          </div>
+        )}
+        <div className="bg-indigo-50 rounded-lg p-4 mb-6">
+          <p className="text-gray-700">{scenario.scenario_paragraph}</p>
+        </div>
+        <h3 className="font-semibold text-gray-700 mb-3">Select your answer:</h3>
+        <div>
+          {options.map((option, index) => (
+            <div key={index} className={getOptionClass(option)} onClick={() => !showResult && onSelectAnswer(option.text)}>
+              <p className="text-gray-800">{option.text}</p>
+            </div>
+          ))}
+        </div>
+        {showResult && (
+          <div className={`mt-4 p-4 rounded-lg ${answerResult?.isCorrect ? 'bg-green-50 border border-green-200' : 'bg-red-50 border border-red-200'}`}>
+            <h4 className={`font-semibold ${answerResult?.isCorrect ? 'text-green-700' : 'text-red-700'}`}>
+              {answerResult?.isCorrect ? '✓ Correct!' : '✗ Incorrect'}
+            </h4>
+            <p className="text-gray-700 mt-2"><strong>Rationale:</strong> {answerResult?.rationale}</p>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/Quiz/QuizList.jsx

+import { useState, useEffect } from 'react';
+import { Link } from 'react-router-dom';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import { FiClock, FiCheckCircle, FiPlay } from 'react-icons/fi';
+
+export default function QuizList() {
+  const [quizzes, setQuizzes] = useState([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    api.get('/quiz').then(res => setQuizzes(res.data)).finally(() => setLoading(false));
+  }, []);
+
+  if (loading) return <Loading />;
+
+  return (
+    <div>
+      <div className="mb-8">
+        <h1 className="text-3xl font-bold text-gray-800">Available Quizzes</h1>
+        <p className="text-gray-600 mt-2">Test your financial knowledge with our curated scenarios</p>
+      </div>
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+        {quizzes.map(quiz => (
+          <div key={quiz.id} className="bg-white rounded-xl shadow-lg overflow-hidden card-hover">
+            <div className="gradient-bg p-6">
+              <h2 className="text-xl font-bold text-white">{quiz.title}</h2>
+            </div>
+            <div className="p-6">
+              <p className="text-gray-600 mb-4">{quiz.description}</p>
+              <div className="flex items-center gap-4 text-sm text-gray-500 mb-4">
+                <span className="flex items-center gap-1"><FiCheckCircle /> {quiz.question_count} Questions</span>
+                {quiz.time_limit > 0 && <span className="flex items-center gap-1"><FiClock /> {quiz.time_limit} min</span>}
+              </div>
+              <div className="flex items-center justify-between">
+                <span className="text-sm text-gray-500">Pass: {quiz.passing_score}%</span>
+                <Link to={`/quiz/${quiz.id}`} className="bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700 transition flex items-center gap-2">
+                  <FiPlay /> Start Quiz
+                </Link>
+              </div>
+            </div>
+          </div>
+        ))}
+      </div>
+      {quizzes.length === 0 && (
+        <div className="text-center py-12">
+          <p className="text-gray-500 text-lg">No quizzes available yet.</p>
+        </div>
+      )}
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/Quiz/QuizResult.jsx

+import { useState, useEffect } from 'react';
+import { useParams, Link } from 'react-router-dom';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import { FiCheckCircle, FiXCircle, FiClock, FiHome, FiRepeat } from 'react-icons/fi';
+
+export default function QuizResult() {
+  const { attemptId } = useParams();
+  const [result, setResult] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    api.get(`/quiz/result/${attemptId}`).then(res => setResult(res.data)).finally(() => setLoading(false));
+  }, [attemptId]);
+
+  if (loading) return <Loading />;
+  if (!result) return null;
+
+  const passed = result.score >= 60;
+
+  return (
+    <div className="max-w-2xl mx-auto">
+      <div className="bg-white rounded-xl shadow-lg overflow-hidden">
+        <div className={`p-8 text-center ${passed ? 'bg-green-500' : 'bg-red-500'}`}>
+          {passed ? <FiCheckCircle className="mx-auto text-white" size={64} /> : <FiXCircle className="mx-auto text-white" size={64} />}
+          <h1 className="text-3xl font-bold text-white mt-4">{passed ? 'Congratulations!' : 'Keep Practicing!'}</h1>
+          <p className="text-white opacity-90 mt-2">{passed ? 'You passed the quiz!' : 'You did not pass this time.'}</p>
+        </div>
+        <div className="p-8">
+          <h2 className="text-2xl font-bold text-gray-800 text-center mb-6">{result.quiz_title}</h2>
+          <div className="grid grid-cols-3 gap-6 mb-8">
+            <div className="text-center">
+              <div className="text-4xl font-bold text-indigo-600">{result.score}%</div>
+              <div className="text-gray-500 mt-1">Score</div>
+            </div>
+            <div className="text-center">
+              <div className="text-4xl font-bold text-green-600">{result.correct_answers}/{result.total_questions}</div>
+              <div className="text-gray-500 mt-1">Correct</div>
+            </div>
+            <div className="text-center">
+              <div className="text-4xl font-bold text-gray-600 flex items-center justify-center gap-1">
+                <FiClock /> {Math.floor(result.time_taken / 60)}:{String(result.time_taken % 60).padStart(2, '0')}
+              </div>
+              <div className="text-gray-500 mt-1">Time</div>
+            </div>
+          </div>
+          <div className="flex justify-center gap-4">
+            <Link to="/" className="flex items-center gap-2 bg-indigo-600 text-white px-6 py-3 rounded-lg font-semibold hover:bg-indigo-700 transition">
+              <FiHome /> Back to Quizzes
+            </Link>
+            <Link to={`/quiz/${result.quiz_id}`} className="flex items-center gap-2 border-2 border-indigo-600 text-indigo-600 px-6 py-3 rounded-lg font-semibold hover:bg-indigo-50 transition">
+              <FiRepeat /> Try Again
+            </Link>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/Quiz/QuizTake.jsx

+import { useState, useEffect } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import QuestionCard from './QuestionCard';
+import { toast } from 'react-toastify';
+import { FiArrowRight, FiCheck } from 'react-icons/fi';
+
+export default function QuizTake() {
+  const { id } = useParams();
+  const navigate = useNavigate();
+  const [quiz, setQuiz] = useState(null);
+  const [attemptId, setAttemptId] = useState(null);
+  const [currentIndex, setCurrentIndex] = useState(0);
+  const [selectedAnswer, setSelectedAnswer] = useState(null);
+  const [showResult, setShowResult] = useState(false);
+  const [answerResult, setAnswerResult] = useState(null);
+  const [loading, setLoading] = useState(true);
+  const [submitting, setSubmitting] = useState(false);
+  const [startTime] = useState(Date.now());
+
+  useEffect(() => {
+    const loadQuiz = async () => {
+      try {
+        const quizRes = await api.get(`/quiz/${id}`);
+        setQuiz(quizRes.data);
+        const startRes = await api.post(`/quiz/${id}/start`);
+        setAttemptId(startRes.data.attemptId);
+      } catch (error) {
+        toast.error('Failed to load quiz');
+        navigate('/');
+      } finally {
+        setLoading(false);
+      }
+    };
+    loadQuiz();
+  }, [id, navigate]);
+
+  const handleSubmitAnswer = async () => {
+    if (!selectedAnswer) {
+      toast.warning('Please select an answer');
+      return;
+    }
+    setSubmitting(true);
+    try {
+      const scenario = quiz.scenarios[currentIndex];
+      const res = await api.post('/quiz/answer', { attemptId, scenarioId: scenario.id, selectedAnswer });
+      setAnswerResult(res.data);
+      setShowResult(true);
+    } catch (error) {
+      toast.error('Failed to submit answer');
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  const handleNext = async () => {
+    if (currentIndex < quiz.scenarios.length - 1) {
+      setCurrentIndex(currentIndex + 1);
+      setSelectedAnswer(null);
+      setShowResult(false);
+      setAnswerResult(null);
+    } else {
+      const timeTaken = Math.round((Date.now() - startTime) / 1000);
+      try {
+        await api.post('/quiz/complete', { attemptId, timeTaken });
+        navigate(`/result/${attemptId}`);
+      } catch (error) {
+        toast.error('Failed to complete quiz');
+      }
+    }
+  };
+
+  if (loading) return <Loading />;
+  if (!quiz) return null;
+
+  const currentScenario = quiz.scenarios[currentIndex];
+  const progress = ((currentIndex + 1) / quiz.scenarios.length) * 100;
+
+  return (
+    <div className="max-w-4xl mx-auto">
+      <div className="bg-white rounded-xl shadow-lg p-6 mb-6">
+        <div className="flex justify-between items-center mb-4">
+          <h1 className="text-2xl font-bold text-gray-800">{quiz.title}</h1>
+          <span className="text-gray-500">Question {currentIndex + 1} of {quiz.scenarios.length}</span>
+        </div>
+        <div className="w-full bg-gray-200 rounded-full h-2">
+          <div className="bg-indigo-600 h-2 rounded-full transition-all duration-300" style={{ width: `${progress}%` }}></div>
+        </div>
+      </div>
+      <QuestionCard scenario={currentScenario} selectedAnswer={selectedAnswer} onSelectAnswer={setSelectedAnswer} showResult={showResult} answerResult={answerResult} />
+      <div className="mt-6 flex justify-end">
+        {!showResult ? (
+          <button onClick={handleSubmitAnswer} disabled={submitting || !selectedAnswer} className="bg-indigo-600 text-white px-6 py-3 rounded-lg font-semibold hover:bg-indigo-700 transition flex items-center gap-2 disabled:opacity-50">
+            {submitting ? 'Submitting...' : <><FiCheck /> Submit Answer</>}
+          </button>
+        ) : (
+          <button onClick={handleNext} className="bg-green-600 text-white px-6 py-3 rounded-lg font-semibold hover:bg-green-700 transition flex items-center gap-2">
+            {currentIndex < quiz.scenarios.length - 1 ? <><FiArrowRight /> Next Question</> : <><FiCheck /> Finish Quiz</>}
+          </button>
+        )}
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/User/History.jsx

+import { useState, useEffect } from 'react';
+import { Link } from 'react-router-dom';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import { FiClock, FiCheckCircle, FiXCircle } from 'react-icons/fi';
+
+export default function History() {
+  const [attempts, setAttempts] = useState([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    api.get('/user/history').then(res => setAttempts(res.data)).finally(() => setLoading(false));
+  }, []);
+
+  if (loading) return <Loading />;
+
+  return (
+    <div>
+      <h1 className="text-3xl font-bold text-gray-800 mb-8">Quiz History</h1>
+      {attempts.length === 0 ? (
+        <div className="bg-white rounded-xl shadow-lg p-8 text-center">
+          <p className="text-gray-500 text-lg">You haven't taken any quizzes yet.</p>
+          <Link to="/" className="inline-block mt-4 bg-indigo-600 text-white px-6 py-2 rounded-lg hover:bg-indigo-700 transition">
+            Browse Quizzes
+          </Link>
+        </div>
+      ) : (
+        <div className="bg-white rounded-xl shadow-lg overflow-hidden">
+          <table className="w-full">
+            <thead className="bg-gray-50">
+              <tr>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Quiz</th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Score</th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Result</th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Time</th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Date</th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Actions</th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-gray-200">
+              {attempts.map(attempt => (
+                <tr key={attempt.id}>
+                  <td className="px-6 py-4 whitespace-nowrap font-medium text-gray-800">{attempt.quiz_title}</td>
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    <span className={`font-semibold ${attempt.score >= 60 ? 'text-green-600' : 'text-red-600'}`}>
+                      {attempt.score}%
+                    </span>
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    {attempt.score >= 60 ? (
+                      <span className="flex items-center gap-1 text-green-600"><FiCheckCircle /> Passed</span>
+                    ) : (
+                      <span className="flex items-center gap-1 text-red-600"><FiXCircle /> Failed</span>
+                    )}
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap text-gray-500">
+                    <span className="flex items-center gap-1"><FiClock /> {Math.floor(attempt.time_taken / 60)}:{String(attempt.time_taken % 60).padStart(2, '0')}</span>
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap text-gray-500">
+                    {new Date(attempt.started_at).toLocaleDateString()}
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    <Link to={`/result/${attempt.id}`} className="text-indigo-600 hover:underline">View</Link>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/User/Leaderboard.jsx

+import { useState, useEffect } from 'react';
+import api from '../../services/api';
+import Loading from '../Common/Loading';
+import { FiAward } from 'react-icons/fi';
+
+export default function Leaderboard() {
+  const [leaderboard, setLeaderboard] = useState([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    api.get('/user/leaderboard').then(res => setLeaderboard(res.data)).finally(() => setLoading(false));
+  }, []);
+
+  if (loading) return <Loading />;
+
+  const getMedalColor = (index) => {
+    if (index === 0) return 'text-yellow-500';
+    if (index === 1) return 'text-gray-400';
+    if (index === 2) return 'text-amber-600';
+    return 'text-gray-300';
+  };
+
+  return (
+    <div className="max-w-3xl mx-auto">
+      <div className="text-center mb-8">
+        <h1 className="text-3xl font-bold text-gray-800">Leaderboard</h1>
+        <p className="text-gray-600 mt-2">Top performers in financial scenarios</p>
+      </div>
+      {leaderboard.length === 0 ? (
+        <div className="bg-white rounded-xl shadow-lg p-8 text-center">
+          <p className="text-gray-500 text-lg">No rankings yet. Be the first!</p>
+        </div>
+      ) : (
+        <div className="bg-white rounded-xl shadow-lg overflow-hidden">
+          {leaderboard.map((user, index) => (
+            <div key={user.id} className={`flex items-center gap-4 p-4 ${index < 3 ? 'bg-gradient-to-r from-indigo-50 to-white' : ''} ${index !== leaderboard.length - 1 ? 'border-b' : ''}`}>
+              <div className="w-10 text-center">
+                {index < 3 ? <FiAward className={`mx-auto ${getMedalColor(index)}`} size={24} /> : <span className="text-gray-500 font-medium">{index + 1}</span>}
+              </div>
+              <div className="w-12 h-12 bg-indigo-600 rounded-full flex items-center justify-center text-white font-bold">
+                {user.username.charAt(0).toUpperCase()}
+              </div>
+              <div className="flex-1">
+                <h3 className="font-semibold text-gray-800">{user.username}</h3>
+                <p className="text-sm text-gray-500">{user.quizzes_taken} quizzes completed</p>
+              </div>
+              <div className="text-right">
+                <div className="text-2xl font-bold text-indigo-600">{user.total_score}</div>
+                <div className="text-sm text-gray-500">points</div>
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/User/Profile.jsx

+import { useState, useEffect } from 'react';
+import api from '../../services/api';
+import { useAuth } from '../../context/AuthContext';
+import { toast } from 'react-toastify';
+import { FiUser, FiMail, FiLock, FiSave } from 'react-icons/fi';
+
+export default function Profile() {
+  const { user } = useAuth();
+  const [profile, setProfile] = useState({ username: '', email: '' });
+  const [passwords, setPasswords] = useState({ currentPassword: '', newPassword: '', confirmPassword: '' });
+  const [loading, setLoading] = useState(false);
+
+  useEffect(() => {
+    api.get('/user/profile').then(res => setProfile(res.data));
+  }, []);
+
+  const handleProfileUpdate = async (e) => {
+    e.preventDefault();
+    setLoading(true);
+    try {
+      await api.put('/user/profile', { username: profile.username, email: profile.email });
+      toast.success('Profile updated successfully');
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Update failed');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handlePasswordChange = async (e) => {
+    e.preventDefault();
+    if (passwords.newPassword !== passwords.confirmPassword) {
+      toast.error('Passwords do not match');
+      return;
+    }
+    setLoading(true);
+    try {
+      await api.put('/user/password', { currentPassword: passwords.currentPassword, newPassword: passwords.newPassword });
+      toast.success('Password changed successfully');
+      setPasswords({ currentPassword: '', newPassword: '', confirmPassword: '' });
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Password change failed');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="max-w-2xl mx-auto">
+      <h1 className="text-3xl font-bold text-gray-800 mb-8">My Profile</h1>
+      <div className="bg-white rounded-xl shadow-lg p-6 mb-6">
+        <div className="flex items-center gap-4 mb-6">
+          <div className="w-20 h-20 bg-indigo-600 rounded-full flex items-center justify-center text-white text-3xl font-bold">
+            {profile.username?.charAt(0)?.toUpperCase()}
+          </div>
+          <div>
+            <h2 className="text-xl font-bold text-gray-800">{profile.username}</h2>
+            <p className="text-gray-500">{profile.email}</p>
+            <span className={`text-sm px-2 py-1 rounded ${user?.role === 'admin' ? 'bg-red-100 text-red-600' : 'bg-blue-100 text-blue-600'}`}>
+              {user?.role}
+            </span>
+          </div>
+        </div>
+        <div className="grid grid-cols-2 gap-4 text-center">
+          <div className="bg-gray-50 rounded-lg p-4">
+            <div className="text-2xl font-bold text-indigo-600">{profile.total_score || 0}</div>
+            <div className="text-gray-500">Total Score</div>
+          </div>
+          <div className="bg-gray-50 rounded-lg p-4">
+            <div className="text-2xl font-bold text-green-600">{profile.quizzes_taken || 0}</div>
+            <div className="text-gray-500">Quizzes Taken</div>
+          </div>
+        </div>
+      </div>
+      <div className="bg-white rounded-xl shadow-lg p-6 mb-6">
+        <h3 className="text-lg font-semibold text-gray-800 mb-4">Update Profile</h3>
+        <form onSubmit={handleProfileUpdate} className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">Username</label>
+            <div className="relative">
+              <FiUser className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="text" value={profile.username} onChange={(e) => setProfile({ ...profile, username: e.target.value })} className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500" />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">Email</label>
+            <div className="relative">
+              <FiMail className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="email" value={profile.email} onChange={(e) => setProfile({ ...profile, email: e.target.value })} className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500" />
+            </div>
+          </div>
+          <button type="submit" disabled={loading} className="flex items-center gap-2 bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700 transition">
+            <FiSave /> Save Changes
+          </button>
+        </form>
+      </div>
+      <div className="bg-white rounded-xl shadow-lg p-6">
+        <h3 className="text-lg font-semibold text-gray-800 mb-4">Change Password</h3>
+        <form onSubmit={handlePasswordChange} className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">Current Password</label>
+            <div className="relative">
+              <FiLock className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="password" value={passwords.currentPassword} onChange={(e) => setPasswords({ ...passwords, currentPassword: e.target.value })} className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500" />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">New Password</label>
+            <div className="relative">
+              <FiLock className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="password" value={passwords.newPassword} onChange={(e) => setPasswords({ ...passwords, newPassword: e.target.value })} className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500" />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">Confirm New Password</label>
+            <div className="relative">
+              <FiLock className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="password" value={passwords.confirmPassword} onChange={(e) => setPasswords({ ...passwords, confirmPassword: e.target.value })} className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500" />
+            </div>
+          </div>
+          <button type="submit" disabled={loading} className="flex items-center gap-2 bg-green-600 text-white px-4 py-2 rounded-lg hover:bg-green-700 transition">
+            <FiLock /> Change Password
+          </button>
+        </form>
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/auth/Login.jsx

+import { useState } from 'react';
+import { Link, useNavigate } from 'react-router-dom';
+import { useAuth } from '../../context/AuthContext';
+import { toast } from 'react-toastify';
+import { FiMail, FiLock, FiLogIn } from 'react-icons/fi';
+
+export default function Login() {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [loading, setLoading] = useState(false);
+  const { login } = useAuth();
+  const navigate = useNavigate();
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    setLoading(true);
+    try {
+      await login(email, password);
+      toast.success('Login successful!');
+      navigate('/');
+    } catch (error) {
+      toast.error(error.response?.data?.message || 'Login failed');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="min-h-[80vh] flex items-center justify-center">
+      <div className="bg-white p-8 rounded-2xl shadow-xl w-full max-w-md">
+        <div className="text-center mb-8">
+          <h1 className="text-3xl font-bold text-gray-800">Welcome Back</h1>
+          <p className="text-gray-500 mt-2">Sign in to continue learning</p>
+        </div>
+        <form onSubmit={handleSubmit} className="space-y-6">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-2">Email</label>
+            <div className="relative">
+              <FiMail className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="email" value={email} onChange={(e) => setEmail(e.target.value)} className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent" placeholder="Enter your email" required />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-2">Password</label>
+            <div className="relative">
+              <FiLock className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="password" value={password} onChange={(e) => setPassword(e.target.value)} className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent" placeholder="Enter your password" required />
+            </div>
+          </div>
+          <button type="submit" disabled={loading} className="w-full bg-indigo-600 text-white py-3 rounded-lg font-semibold hover:bg-indigo-700 transition flex items-center justify-center gap-2">
+            {loading ? 'Signing in...' : <><FiLogIn /> Sign In</>}
+          </button>
+        </form>
+        <p className="text-center mt-6 text-gray-600">
+          Don't have an account? <Link to="/register" className="text-indigo-600 font-semibold hover:underline">Sign up</Link>
+        </p>
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/auth/LoginForm.jsx

-import { useState } from 'react';
-import { Link, useNavigate, useLocation } from 'react-router-dom';
-import { useAuth } from '../../context/ContextUsing';
-import AuthLayout from './AuthLayout';
-import Alert from '../common/Alert';
-import { Eye, EyeOff, Mail, Lock } from 'lucide-react';
-
-const LoginForm = () => {
-    const [formData, setFormData] = useState({ email: '', password: '' });
-    const [showPassword, setShowPassword] = useState(false);
-    const [loading, setLoading] = useState(false);
-    const { login, error, clearError } = useAuth();
-    const navigate = useNavigate();
-    const location = useLocation();
-
-    const from = location.state?.from?.pathname || '/scenarios';
-
-    const handleChange = (e) => {
-        clearError();
-        setFormData({ ...formData, [e.target.name]: e.target.value });
-    };
-
-    const handleSubmit = async (e) => {
-        e.preventDefault();
-        setLoading(true);
-        
-        const result = await login(formData.email, formData.password);
-        
-        setLoading(false);
-        if (result.success) {
-            navigate(from, { replace: true });
-        }
-    };
-
-    return (
-        <AuthLayout
-            title="Welcome back"
-            subtitle={
-                <>
-                    Don't have an account?{' '}
-                    <Link to="/register" className="text-indigo-600 hover:text-indigo-500 font-medium">
-                        Sign up
-                    </Link>
-                </>
-            }
-        >
-            <form onSubmit={handleSubmit} className="space-y-6">
-                {error && <Alert type="error" message={error} onClose={clearError} />}
-
-                <div>
-                    <label htmlFor="email" className="block text-sm font-medium text-gray-700">
-                        Email address
-                    </label>
-                    <div className="mt-1 relative">
-                        <div className="absolute inset-y-0 left-0 pl-3 flex items-center">
-                            <Mail className="h-5 w-5 text-gray-400" />
-                        </div>
-                        <input
-                            id="email"
-                            name="email"
-                            type="email"
-                            autoComplete="email"
-                            required
-                            value={formData.email}
-                            onChange={handleChange}
-                            className="appearance-none block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-md shadow-sm placeholder-gray-400 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500"
-                            placeholder="you@example.com"
-                        />
-                    </div>
-                </div>
-
-                <div>
-                    <label htmlFor="password" className="block text-sm font-medium text-gray-700">
-                        Password
-                    </label>
-                    <div className="mt-1 relative">
-                        <div className="absolute inset-y-0 left-0 pl-3 flex items-center">
-                            <Lock className="h-5 w-5 text-gray-400" />
-                        </div>
-                        <input
-                            id="password"
-                            name="password"
-                            type={showPassword ? 'text' : 'password'}
-                            autoComplete="current-password"
-                            required
-                            value={formData.password}
-                            onChange={handleChange}
-                            className="appearance-none block w-full pl-10 pr-10 py-2 border border-gray-300 rounded-md shadow-sm placeholder-gray-400 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500"
-                            placeholder="••••••••"
-                        />
-                        <button
-                            type="button"
-                            onClick={() => setShowPassword(!showPassword)}
-                            className="absolute inset-y-0 right-0 pr-3 flex items-center"
-                        >
-                            {showPassword ? (
-                                <EyeOff className="h-5 w-5 text-gray-400" />
-                            ) : (
-                                <Eye className="h-5 w-5 text-gray-400" />
-                            )}
-                        </button>
-                    </div>
-                </div>
-
-                <button
-                    type="submit"
-                    disabled={loading}
-                    className="w-full flex justify-center py-2 px-4 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed"
-                >
-                    {loading ? 'Signing in...' : 'Sign in'}
-                </button>
-            </form>
-        </AuthLayout>
-    );
-};
-
-export default LoginForm;
\ No newline at end of file

frontend/src/components/auth/ProtectedRoute.jsx

+import { Navigate } from 'react-router-dom';
+import { useAuth } from '../../context/AuthContext';
+import Loading from '../Common/Loading';
+
+export default function ProtectedRoute({ children, adminOnly = false }) {
+  const { user, loading } = useAuth();
+
+  if (loading) return <Loading />;
+  if (!user) return <Navigate to="/login" />;
+  if (adminOnly && user.role !== 'admin') return <Navigate to="/" />;
+
+  return children;
+}
\ No newline at end of file

frontend/src/components/auth/Register.jsx

+import { useState } from 'react';
+import { Link, useNavigate } from 'react-router-dom';
+import { useAuth } from '../../context/AuthContext';
+import { toast } from 'react-toastify';
+import { FiUser, FiMail, FiLock, FiUserPlus } from 'react-icons/fi';
+
+export default function Register() {
+  const [username, setUsername] = useState('');
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [loading, setLoading] = useState(false);
+  const { register } = useAuth();
+  const navigate = useNavigate();
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    setLoading(true);
+    try {
+      await register(username, email, password);
+      toast.success('Registration successful!');
+      navigate('/');
+    } catch (error) {
+      console.error("error=>", error);
+      toast.error(error.response?.data?.message || 'Registration failed');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="min-h-[80vh] flex items-center justify-center">
+      <div className="bg-white p-8 rounded-2xl shadow-xl w-full max-w-md">
+        <div className="text-center mb-8">
+          <h1 className="text-3xl font-bold text-gray-800">Create Account</h1>
+          <p className="text-gray-500 mt-2">Join us and start learning</p>
+        </div>
+        <form onSubmit={handleSubmit} className="space-y-6">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-2">Username</label>
+            <div className="relative">
+              <FiUser className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="text" value={username} onChange={(e) => setUsername(e.target.value)} className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent" placeholder="Choose a username" required />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-2">Email</label>
+            <div className="relative">
+              <FiMail className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="email" value={email} onChange={(e) => setEmail(e.target.value)} className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent" placeholder="Enter your email" required />
+            </div>
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-2">Password</label>
+            <div className="relative">
+              <FiLock className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400" />
+              <input type="password" value={password} onChange={(e) => setPassword(e.target.value)} className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent" placeholder="Create a password" required minLength="6" />
+            </div>
+          </div>
+          <button type="submit" disabled={loading} className="w-full bg-indigo-600 text-white py-3 rounded-lg font-semibold hover:bg-indigo-700 transition flex items-center justify-center gap-2">
+            {loading ? 'Creating account...' : <><FiUserPlus /> Sign Up</>}
+          </button>
+        </form>
+        <p className="text-center mt-6 text-gray-600">
+          Already have an account? <Link to="/login" className="text-indigo-600 font-semibold hover:underline">Sign in</Link>
+        </p>
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/auth/RegisterForm.jsx

-import { useState } from 'react';
-import { Link, useNavigate } from 'react-router-dom';
-import { useAuth } from '../../context/ContextUsing';
-import AuthLayout from './AuthLayout';
-import Alert from '../common/Alert';
-import { Eye, EyeOff, Mail, Lock, User } from 'lucide-react';
-
-const RegisterForm = () => {
-    const [formData, setFormData] = useState({
-        username: '',
-        email: '',
-        password: '',
-        confirmPassword: ''
-    });
-    const [showPassword, setShowPassword] = useState(false);
-    const [loading, setLoading] = useState(false);
-    const [validationError, setValidationError] = useState('');
-    const { register, error, clearError } = useAuth();
-    const navigate = useNavigate();
-
-    const handleChange = (e) => {
-        clearError();
-        setValidationError('');
-        setFormData({ ...formData, [e.target.name]: e.target.value });
-    };
-
-    const validateForm = () => {
-        if (formData.password !== formData.confirmPassword) {
-            setValidationError('Passwords do not match');
-            return false;
-        }
-        if (formData.password.length < 8) {
-            setValidationError('Password must be at least 8 characters');
-            return false;
-        }
-        if (!/(?=.*[a-z])(?=.*[A-Z])(?=.*\d)/.test(formData.password)) {
-            setValidationError('Password must contain uppercase, lowercase, and number');
-            return false;
-        }
-        if (formData.username.length < 3) {
-            setValidationError('Username must be at least 3 characters');
-            return false;
-        }
-        return true;
-    };
-
-    const handleSubmit = async (e) => {
-        e.preventDefault();
-        
-        if (!validateForm()) return;
-        
-        setLoading(true);
-        const result = await register(formData.username, formData.email, formData.password);
-        setLoading(false);
-        
-        if (result.success) {
-            navigate('/scenarios');
-        }
-    };
-
-    const displayError = validationError || error;
-
-    return (
-        <AuthLayout
-            title="Create your account"
-            subtitle={
-                <>
-                    Already have an account?{' '}
-                    <Link to="/login" className="text-indigo-600 hover:text-indigo-500 font-medium">
-                        Sign in
-                    </Link>
-                </>
-            }
-        >
-            <form onSubmit={handleSubmit} className="space-y-6">
-                {displayError && (
-                    <Alert 
-                        type="error" 
-                        message={displayError} 
-                        onClose={() => { clearError(); setValidationError(''); }} 
-                    />
-                )}
-
-                <div>
-                    <label htmlFor="username" className="block text-sm font-medium text-gray-700">
-                        Username
-                    </label>
-                    <div className="mt-1 relative">
-                        <div className="absolute inset-y-0 left-0 pl-3 flex items-center">
-                            <User className="h-5 w-5 text-gray-400" />
-                        </div>
-                        <input
-                            id="username"
-                            name="username"
-                            type="text"
-                            required
-                            value={formData.username}
-                            onChange={handleChange}
-                            className="appearance-none block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-md shadow-sm placeholder-gray-400 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500"
-                            placeholder="johndoe"
-                        />
-                    </div>
-                </div>
-
-                <div>
-                    <label htmlFor="email" className="block text-sm font-medium text-gray-700">
-                        Email address
-                    </label>
-                    <div className="mt-1 relative">
-                        <div className="absolute inset-y-0 left-0 pl-3 flex items-center">
-                            <Mail className="h-5 w-5 text-gray-400" />
-                        </div>
-                        <input
-                            id="email"
-                            name="email"
-                            type="email"
-                            autoComplete="email"
-                            required
-                            value={formData.email}
-                            onChange={handleChange}
-                            className="appearance-none block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-md shadow-sm placeholder-gray-400 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500"
-                            placeholder="you@example.com"
-                        />
-                    </div>
-                </div>
-
-                <div>
-                    <label htmlFor="password" className="block text-sm font-medium text-gray-700">
-                        Password
-                    </label>
-                    <div className="mt-1 relative">
-                        <div className="absolute inset-y-0 left-0 pl-3 flex items-center">
-                            <Lock className="h-5 w-5 text-gray-400" />
-                        </div>
-                        <input
-                            id="password"
-                            name="password"
-                            type={showPassword ? 'text' : 'password'}
-                            required
-                            value={formData.password}
-                            onChange={handleChange}
-                            className="appearance-none block w-full pl-10 pr-10 py-2 border border-gray-300 rounded-md shadow-sm placeholder-gray-400 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500"
-                            placeholder="••••••••"
-                        />
-                        <button
-                            type="button"
-                            onClick={() => setShowPassword(!showPassword)}
-                            className="absolute inset-y-0 right-0 pr-3 flex items-center"
-                        >
-                            {showPassword ? (
-                                <EyeOff className="h-5 w-5 text-gray-400" />
-                            ) : (
-                                <Eye className="h-5 w-5 text-gray-400" />
-                            )}
-                        </button>
-                    </div>
-                    <p className="mt-1 text-xs text-gray-500">
-                        Min 8 characters with uppercase, lowercase, and number
-                    </p>
-                </div>
-
-                <div>
-                    <label htmlFor="confirmPassword" className="block text-sm font-medium text-gray-700">
-                        Confirm Password
-                    </label>
-                    <div className="mt-1 relative">
-                        <div className="absolute inset-y-0 left-0 pl-3 flex items-center">
-                            <Lock className="h-5 w-5 text-gray-400" />
-                        </div>
-                        <input
-                            id="confirmPassword"
-                            name="confirmPassword"
-                            type="password"
-                            required
-                            value={formData.confirmPassword}
-                            onChange={handleChange}
-                            className="appearance-none block w-full pl-10 pr-3 py-2 border border-gray-300 rounded-md shadow-sm placeholder-gray-400 focus:outline-none focus:ring-indigo-500 focus:border-indigo-500"
-                            placeholder="••••••••"
-                        />
-                    </div>
-                </div>
-
-                <button
-                    type="submit"
-                    disabled={loading}
-                    className="w-full flex justify-center py-2 px-4 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed"
-                >
-                    {loading ? 'Creating account...' : 'Create account'}
-                </button>
-            </form>
-        </AuthLayout>
-    );
-};
-
-export default RegisterForm;
\ No newline at end of file

frontend/src/components/common/Alert.jsx

-import { CheckCircle, XCircle, AlertCircle, X } from 'lucide-react';
-
-const Alert = ({ type = 'info', message, onClose }) => {
-    const styles = {
-        success: {
-            bg: 'bg-green-50',
-            border: 'border-green-400',
-            text: 'text-green-800',
-            icon: <CheckCircle className="h-5 w-5 text-green-400" />
-        },
-        error: {
-            bg: 'bg-red-50',
-            border: 'border-red-400',
-            text: 'text-red-800',
-            icon: <XCircle className="h-5 w-5 text-red-400" />
-        },
-        warning: {
-            bg: 'bg-yellow-50',
-            border: 'border-yellow-400',
-            text: 'text-yellow-800',
-            icon: <AlertCircle className="h-5 w-5 text-yellow-400" />
-        },
-        info: {
-            bg: 'bg-blue-50',
-            border: 'border-blue-400',
-            text: 'text-blue-800',
-            icon: <AlertCircle className="h-5 w-5 text-blue-400" />
-        }
-    };
-
-    const style = styles[type];
-
-    return (
-        <div className={`${style.bg} ${style.border} border rounded-md p-4`}>
-            <div className="flex">
-                <div className="flex-shrink-0">{style.icon}</div>
-                <div className={`ml-3 ${style.text}`}>
-                    <p className="text-sm font-medium">{message}</p>
-                </div>
-                {onClose && (
-                    <div className="ml-auto pl-3">
-                        <button
-                            onClick={onClose}
-                            className={`${style.text} hover:opacity-75`}
-                        >
-                            <X className="h-5 w-5" />
-                        </button>
-                    </div>
-                )}
-            </div>
-        </div>
-    );
-};
-
-export default Alert;
\ No newline at end of file

frontend/src/components/common/Loading.jsx

-const Loading = ({ size = 'medium', text = 'Loading...' }) => {
-    const sizeClasses = {
-        small: 'h-4 w-4',
-        medium: 'h-8 w-8',
-        large: 'h-12 w-12'
-    };
-
-    return (
+export default function Loading() {
+  return (
+    <div className="flex items-center justify-center min-h-[60vh]">
+      <div className="animate-spin rounded-full h-16 w-16 border-t-4 border-b-4 border-indigo-600"></div>
+    </div>
+  );
+}
\ No newline at end of file
-        <div className="flex flex-col items-center justify-center p-8">
-            <div className={`animate-spin rounded-full border-b-2 border-indigo-600 ${sizeClasses[size]}`}></div>
-            {text && <p className="mt-4 text-gray-600">{text}</p>}
-        </div>
-    );
-};
-
-export default Loading;
\ No newline at end of file

frontend/src/components/common/Modal.jsx

+import { FiX } from 'react-icons/fi';
+
+export default function Modal({ isOpen, onClose, title, children }) {
+  if (!isOpen) return null;
+
+  return (
+    <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+      <div className="bg-white rounded-2xl shadow-2xl w-full max-w-2xl max-h-[90vh] overflow-y-auto">
+        <div className="flex justify-between items-center p-6 border-b">
+          <h2 className="text-2xl font-bold text-gray-800">{title}</h2>
+          <button onClick={onClose} className="text-gray-500 hover:text-gray-700">
+            <FiX size={24} />
+          </button>
+        </div>
+        <div className="p-6">{children}</div>
+      </div>
+    </div>
+  );
+}
\ No newline at end of file

frontend/src/components/common/Navbar.jsx

-import { Link, useNavigate } from 'react-router-dom';
-import { useAuth } from '../../context/ContextUsing';
-import { LogOut, User, BookOpen, Trophy } from 'lucide-react';
-
-const Navbar = () => {
-    const { user, logout, isAuthenticated } = useAuth();
-    const navigate = useNavigate();
-
-    const handleLogout = async () => {
-        await logout();
-        navigate('/login');
-    };
-
-    return (
-        <nav className="bg-white shadow-lg">
-            <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
-                <div className="flex justify-between h-16">
-                    <div className="flex items-center">
-                        <Link to="/" className="flex items-center space-x-2">
-                            <BookOpen className="h-8 w-8 text-indigo-600" />
-                            <span className="font-bold text-xl text-gray-900">
-                                ScenarioLearn
-                            </span>
-                        </Link>
-                        
-                        <div className="hidden md:flex ml-10 space-x-8">
-                            <Link
-                                to="/scenarios"
-                                className="text-gray-600 hover:text-indigo-600 px-3 py-2 text-sm font-medium"
-                            >
-                                Scenarios
-                            </Link>
-                           
-                        </div>
-                    </div>
-
-                    <div className="flex items-center space-x-4">
-                        {isAuthenticated ? (
-                            <>
-                                <Link
-                                    to="/profile"
-                                    className="flex items-center text-gray-600 hover:text-indigo-600"
-                                >
-                                    <User className="h-5 w-5 mr-1" />
-                                    <span className="hidden sm:inline">{user?.username}</span>
-                                </Link>
-                                <button
-                                    onClick={handleLogout}
-                                    className="flex items-center text-gray-600 hover:text-red-600"
-                                >
-                                    <LogOut className="h-5 w-5" />
-                                </button>
-                            </>
-                        ) : (
-                            <>
-                                <Link
-                                    to="/login"
-                                    className="text-gray-600 hover:text-indigo-600 px-3 py-2 text-sm font-medium"
-                                >
-                                    Login
-                                </Link>
-                                <Link
-                                    to="/register"
-                                    className="bg-indigo-600 text-white px-4 py-2 rounded-md text-sm font-medium hover:bg-indigo-700"
-                                >
-                                    Sign Up
-                                </Link>
-                            </>
-                        )}
-                    </div>
-                </div>
-            </div>
-        </nav>
-    );
-};
-
-export default Navbar;
\ No newline at end of file

frontend/src/components/common/ProtectedRoute.jsx

-import { Navigate, useLocation } from 'react-router-dom';
-import { useAuth } from '../../context/ContextUsing';
-import Loading from './Loading';
-
-const ProtectedRoute = ({ children }) => {
-    const { isAuthenticated, loading } = useAuth();
-    const location = useLocation();
-
-    if (loading) {
-        return (
-            <div className="min-h-screen flex items-center justify-center">
-                <Loading text="Checking authentication..." />
-            </div>
-        );
-    }
-
-    if (!isAuthenticated) {
-        return <Navigate to="/login" state={{ from: location }} replace />;
-    }
-
-    return children;
-};
-
-export default ProtectedRoute;
\ No newline at end of file

frontend/src/components/profile/UserProfile.jsx

-import { useState, useEffect } from 'react';
-// import { useAuth } from '../../context/AuthContext';
-import { authAPI, progressAPI } from '../../services/api';
-import Loading from '../common/Loading';
-import { User, Mail, Calendar, Award, Target, Clock, TrendingUp } from 'lucide-react';
-
-const UserProfile = () => {
-    // const { user } = useAuth();
-    const [profile, setProfile] = useState(null);
-    const [progress, setProgress] = useState([]);
-    const [loading, setLoading] = useState(true);
-
-    useEffect(() => {
-        console.log("loadProfileData");
-        loadProfileData();
-    }, []);
-
-    const loadProfileData = async () => {
-        try {
-            const [profileRes, progressRes] = await Promise.all([
-                authAPI.getProfile(),
-                progressAPI.getUserProgress({ limit: 10 })
-            ]);
-            setProfile(profileRes.data.data);
-            setProgress(progressRes.data.data);
-        } catch (err) {
-            console.error('Failed to load profile:', err);
-        } finally {
-            setLoading(false);
-        }
-    };
-
-    if (loading) {
-        return (
-            <div className="min-h-screen flex items-center justify-center">
-                <Loading text="Loading profile..." />
-            </div>
-        );
-    }
-
-    const stats = profile?.statistics || {};
-
-    return (
-        <div className="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
-            {/* Profile Header */}
-            <div className="bg-white rounded-lg shadow-md p-6 mb-6">
-                <div className="flex items-center space-x-4">
-                    <div className="h-20 w-20 rounded-full bg-indigo-100 flex items-center justify-center">
-                        <User className="h-10 w-10 text-indigo-600" />
-                    </div>
-                    <div>
-                        <h1 className="text-2xl font-bold text-gray-900">{profile?.user?.username}</h1>
-                        <div className="flex items-center text-gray-600 mt-1">
-                            <Mail className="h-4 w-4 mr-2" />
-                            {profile?.user?.email}
-                        </div>
-                        <div className="flex items-center text-gray-500 text-sm mt-1">
-                            <Calendar className="h-4 w-4 mr-2" />
-                            Joined {new Date(profile?.user?.created_at).toLocaleDateString()}
-                        </div>
-                    </div>
-                </div>
-            </div>
-
-            {/* Statistics */}
-            <div className="grid grid-cols-1 md:grid-cols-4 gap-4 mb-6">
-                <div className="bg-white rounded-lg shadow-md p-4">
-                    <div className="flex items-center justify-between">
-                        <div>
-                            <p className="text-sm text-gray-500">Scenarios</p>
-                            <p className="text-2xl font-bold text-gray-900">{stats.scenarios_attempted || 0}</p>
-                        </div>
-                        <Target className="h-8 w-8 text-indigo-600" />
-                    </div>
-                </div>
-
-                <div className="bg-white rounded-lg shadow-md p-4">
-                    <div className="flex items-center justify-between">
-                        <div>
-                            <p className="text-sm text-gray-500">Correct</p>
-                            <p className="text-2xl font-bold text-green-600">{stats.correct_answers || 0}</p>
-                        </div>
-                        <Award className="h-8 w-8 text-green-600" />
-                    </div>
-                </div>
-
-                <div className="bg-white rounded-lg shadow-md p-4">
-                    <div className="flex items-center justify-between">
-                        <div>
-                            <p className="text-sm text-gray-500">Avg Score</p>
-                            <p className="text-2xl font-bold text-gray-900">{stats.average_score || 0}</p>
-                        </div>
-                        <TrendingUp className="h-8 w-8 text-blue-600" />
-                    </div>
-                </div>
-
-                <div className="bg-white rounded-lg shadow-md p-4">
-                    <div className="flex items-center justify-between">
-                        <div>
-                            <p className="text-sm text-gray-500">Accuracy</p>
-                            <p className="text-2xl font-bold text-purple-600">{stats.accuracy_percentage || 0}%</p>
-                        </div>
-                        <Clock className="h-8 w-8 text-purple-600" />
-                    </div>
-                </div>
-            </div>
-
-            {/* Recent Progress */}
-            <div className="bg-white rounded-lg shadow-md p-6">
-                <h2 className="text-lg font-semibold text-gray-900 mb-4">Recent Activity</h2>
-                
-                {progress.length === 0 ? (
-                    <p className="text-gray-500 text-center py-8">
-                        No activity yet. Start practicing scenarios!
-                    </p>
-                ) : (
-                    <div className="space-y-4">
-                        {progress.map((item) => (
-                            <div
-                                key={item.id}
-                                className="flex items-center justify-between p-4 bg-gray-50 rounded-lg"
-                            >
-                                <div>
-                                    <h3 className="font-medium text-gray-900">{item.scenario_title}</h3>
-                                    <p className="text-sm text-gray-500">
-                                        {new Date(item.completed_at).toLocaleDateString()} • Attempt #{item.attempt_number}
-                                    </p>
-                                </div>
-                                <div className="flex items-center space-x-4">
-                                    <span className={`px-2 py-1 text-xs font-medium rounded-full ${
-                                        item.is_correct ? 'bg-green-100 text-green-800' : 'bg-red-100 text-red-800'
-                                    }`}>
-                                        {item.is_correct ? 'Correct' : 'Incorrect'}
-                                    </span>
-                                    <span className="text-lg font-bold text-gray-900">{item.score}</span>
-                                </div>
-                            </div>
-                        ))}
-                    </div>
-                )}
-            </div>
-        </div>
-    );
-};
-
-export default UserProfile;
\ No newline at end of file

frontend/src/components/scenario/AnswerOptions.jsx

-import { useState } from 'react';
-import { CheckCircle, Circle } from 'lucide-react';
-
-const AnswerOptions = ({ answers, onSelect, disabled, selectedAnswer, correctAnswer, showFeedback }) => {
-    const [hoveredId, setHoveredId] = useState(null);
-
-    const getOptionStyle = (answer) => {
-        if (!showFeedback) {
-            if (selectedAnswer === answer.answer) {
-                return 'border-indigo-500 bg-indigo-50 ring-2 ring-indigo-500';
-            }
-            if (hoveredId === answer.id && !disabled) {
-                return 'border-gray-300 bg-gray-50';
-            }
-            return 'border-gray-200 hover:border-gray-300';
-        }
-
-        // Show feedback
-        if (answer.answer === correctAnswer) {
-            return 'border-green-500 bg-green-50 ring-2 ring-green-500';
-        }
-        if (selectedAnswer === answer.answer && answer.answer !== correctAnswer) {
-            return 'border-red-500 bg-red-50 ring-2 ring-red-500';
-        }
-        return 'border-gray-200 opacity-50';
-    };
-
-    return (
-        <div className="space-y-3">
-            <h3 className="text-lg font-medium text-gray-900 mb-4">Select your answer:</h3>
-            {answers.map((answer) => (
-                <button
-                    key={answer.id}
-                    onClick={() => !disabled && onSelect(answer)}
-                    disabled={disabled}
-                    onMouseEnter={() => setHoveredId(answer.id)}
-                    onMouseLeave={() => setHoveredId(null)}
-                    className={`w-full text-left p-4 rounded-lg border-2 transition-all duration-200 ${getOptionStyle(answer)} ${
-                        disabled ? 'cursor-not-allowed' : 'cursor-pointer'
-                    }`}
-                >
-                    <div className="flex items-start">
-                        <div className="shrink-0 mt-0.5">
-                            {showFeedback && answer.answer === correctAnswer ? (
-                                <CheckCircle className="h-5 w-5 text-green-500" />
-                            ) : selectedAnswer === answer.answer ? (
-                                <CheckCircle className={`h-5 w-5 ${showFeedback ? 'text-red-500' : 'text-indigo-500'}`} />
-                            ) : (
-                                <Circle className="h-5 w-5 text-gray-400" />
-                            )}
-                        </div>
-                        <span className="ml-3 text-gray-900">{answer.answer}</span>
-                    </div>
-                </button>
-            ))}
-        </div>
-    );
-};
-
-export default AnswerOptions;
\ No newline at end of file

frontend/src/components/scenario/FeedbackModal.jsx

-import { CheckCircle, XCircle, X, ArrowRight } from 'lucide-react';
-
-const FeedbackModal = ({ isOpen, onClose, feedback, onNext }) => {
-    if (!isOpen || !feedback) return null;
-
-    const isCorrect = feedback.correct;
-
-    return (
-        <div className="fixed inset-0 z-50 overflow-y-auto">
-            <div className="flex items-center justify-center min-h-screen px-4 pt-4 pb-20 text-center sm:p-0">
-                {/* Backdrop */}
-                <div 
-                    className="fixed inset-0 transition-opacity bg-gray-500 bg-opacity-75"
-                    onClick={onClose}
-                />
-
-                {/* Modal */}
-                <div className="relative inline-block w-full max-w-lg p-6 my-8 overflow-hidden text-left align-middle transition-all transform bg-white shadow-xl rounded-2xl">
-                    {/* Close button */}
-                    <button
-                        onClick={onClose}
-                        className="absolute top-4 right-4 text-gray-400 hover:text-gray-600"
-                    >
-                        <X className="h-6 w-6" />
-                    </button>
-
-                    {/* Header */}
-                    <div className="flex items-center space-x-3 mb-4">
-                        {isCorrect ? (
-                            <CheckCircle className="h-10 w-10 text-green-500" />
-                        ) : (
-                            <XCircle className="h-10 w-10 text-red-500" />
-                        )}
-                        <h3 className={`text-2xl font-bold ${isCorrect ? 'text-green-700' : 'text-red-700'}`}>
-                            {isCorrect ? 'Correct!' : 'Incorrect'}
-                        </h3>
-                    </div>
-
-                    {/* Content */}
-                    <div className="mt-4 space-y-4">
-                        {!isCorrect && feedback.correctAnswer && (
-                            <div className="p-4 bg-green-50 rounded-lg border border-green-200">
-                                <p className="text-sm font-medium text-green-800">Correct Answer:</p>
-                                <p className="mt-1 text-green-900">{feedback.correctAnswer}</p>
-                            </div>
-                        )}
-
-                        <div className={`p-4 rounded-lg ${isCorrect ? 'bg-green-50 border border-green-200' : 'bg-gray-50 border border-gray-200'}`}>
-                            <p className={`text-sm font-medium ${isCorrect ? 'text-green-800' : 'text-gray-700'}`}>
-                                {isCorrect ? 'Why this is correct:' : 'Explanation:'}
-                            </p>
-                            <p className={`mt-2 ${isCorrect ? 'text-green-900' : 'text-gray-900'}`}>
-                                {isCorrect ? feedback.rationale : feedback.explanation}
-                            </p>
-                        </div>
-
-                        {!isCorrect && feedback.rationale && (
-                            <div className="p-4 bg-blue-50 rounded-lg border border-blue-200">
-                                <p className="text-sm font-medium text-blue-800">Why the correct answer works:</p>
-                                <p className="mt-2 text-blue-900">{feedback.rationale}</p>
-                            </div>
-                        )}
-                    </div>
-
-                    {/* Actions */}
-                    <div className="mt-6 flex justify-end space-x-3">
-                        <button
-                            onClick={onClose}
-                            className="px-4 py-2 text-sm font-medium text-gray-700 bg-gray-100 rounded-md hover:bg-gray-200"
-                        >
-                            Review Scenario
-                        </button>
-                        {onNext && (
-                            <button
-                                onClick={onNext}
-                                className="flex items-center px-4 py-2 text-sm font-medium text-white bg-indigo-600 rounded-md hover:bg-indigo-700"
-                            >
-                                Next Scenario
-                                <ArrowRight className="ml-2 h-4 w-4" />
-                            </button>
-                        )}
-                    </div>
-                </div>
-            </div>
-        </div>
-    );
-};
-
-export default FeedbackModal;
\ No newline at end of file

frontend/src/components/scenario/GivensTable.jsx

-const GivensTable = ({ data }) => {
-    if (!data || !data.headers || !data.rows) {
-        return <div className="text-gray-500">No data available</div>;
-    }
-
-    const formatValue = (value, header) => {
-        if (value === null || value === undefined) return '-';
-        
-        const lowerHeader = header.toLowerCase();
-        
-        if (lowerHeader.includes('price')) {
-            return `$${parseFloat(value).toFixed(2)}`;
-        }
-        if (lowerHeader.includes('z-score') || lowerHeader.includes('z_score')) {
-            const num = parseFloat(value);
-            return (
-                <span className={num > 2 ? 'text-red-600 font-semibold' : num < -2 ? 'text-green-600 font-semibold' : ''}>
-                    {num.toFixed(2)}
-                </span>
-            );
-        }
-        if (lowerHeader.includes('date')) {
-            return new Date(value).toLocaleDateString();
-        }
-        
-        return value;
-    };
-
-    const getHeaderKey = (header) => {
-        return header.toLowerCase().replace(/[\s-]/g, '_');
-    };
-
-    return (
-        <div className="overflow-x-auto rounded-lg border border-gray-200">
-            <table className="min-w-full divide-y divide-gray-200">
-                <thead className="bg-gray-50">
-                    <tr>
-                        {data.headers.map((header, idx) => (
-                            <th
-                                key={idx}
-                                className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider"
-                            >
-                                {header}
-                            </th>
-                        ))}
-                    </tr>
-                </thead>
-                <tbody className="bg-white divide-y divide-gray-200">
-                    {data.rows.map((row, rowIdx) => (
-                        <tr key={rowIdx} className="hover:bg-gray-50">
-                            {data.headers.map((header, colIdx) => {
-                                const key = getHeaderKey(header);
-                                const value = row[key] || row[header.toLowerCase()];
-                                return (
-                                    <td
-                                        key={colIdx}
-                                        className="px-4 py-3 text-sm text-gray-900 whitespace-nowrap"
-                                    >
-                                        {formatValue(value, header)}
-                                    </td>
-                                );
-                            })}
-                        </tr>
-                    ))}
-                </tbody>
-            </table>
-        </div>
-    );
-};
-
-export default GivensTable;
\ No newline at end of file

frontend/src/components/scenario/ScenarioCard.jsx

-import { Link } from 'react-router-dom';
-import { Clock, CheckCircle, ChevronRight, Tag } from 'lucide-react';
-
-const ScenarioCard = ({ scenario }) => {
-    const difficultyColors = {
-        easy: 'bg-green-100 text-green-800',
-        medium: 'bg-yellow-100 text-yellow-800',
-        hard: 'bg-orange-100 text-orange-800',
-        expert: 'bg-red-100 text-red-800'
-    };
-
-    return (
-        <Link
-            to={`/scenarios/${scenario.id}`}
-            className="block bg-white rounded-lg shadow-md hover:shadow-lg transition-shadow duration-200 overflow-hidden border border-gray-100"
-        >
-            <div className="p-6">
-                <div className="flex items-start justify-between">
-                    <div className="flex-1">
-                        <div className="flex items-center space-x-2 mb-2">
-                            <span className={`px-2 py-1 text-xs font-medium rounded-full ${difficultyColors[scenario.difficulty_level]}`}>
-                                {scenario.difficulty_level}
-                            </span>
-                            {scenario.category && (
-                                <span className="px-2 py-1 text-xs font-medium rounded-full bg-indigo-100 text-indigo-800">
-                                    {scenario.category}
-                                </span>
-                            )}
-                            {scenario.isCompleted && (
-                                <CheckCircle className="h-5 w-5 text-green-500" />
-                            )}
-                        </div>
-                        <h3 className="text-lg font-semibold text-gray-900 mb-2">
-                            {scenario.title}
-                        </h3>
-                        <p className="text-gray-600 text-sm line-clamp-2">
-                            {scenario.short_description}
-                        </p>
-                    </div>
-                    <ChevronRight className="h-5 w-5 text-gray-400 shrink-0 ml-4" />
-                </div>
-
-                {scenario.tags && scenario.tags.length > 0 && (
-                    <div className="mt-4 flex items-center flex-wrap gap-2">
-                        <Tag className="h-4 w-4 text-gray-400" />
-                        {scenario.tags.slice(0, 3).map((tag, idx) => (
-                            <span
-                                key={idx}
-                                className="text-xs text-gray-500 bg-gray-100 px-2 py-1 rounded"
-                            >
-                                {tag}
-                            </span>
-                        ))}
-                    </div>
-                )}
-            </div>
-        </Link>
-    );
-};
-
-export default ScenarioCard;
\ No newline at end of file

frontend/src/components/scenario/ScenarioDashboard.jsx

-import { useState, useEffect } from 'react';
-import { scenariosAPI } from '../../services/api';
-import ScenarioCard from './ScenarioCard';
-import Loading from '../common/Loading';
-import Alert from '../common/Alert';
-import { Filter, Search } from 'lucide-react';
-
-const ScenarioDashboard = () => {
-    const [scenarios, setScenarios] = useState([]);
-    const [categories, setCategories] = useState([]);
-    const [loading, setLoading] = useState(true);
-    const [error, setError] = useState(null);
-    const [filters, setFilters] = useState({
-        category: '',
-        difficulty: '',
-        search: ''
-    });
-    const [pagination, setPagination] = useState({
-        limit: 12,
-        offset: 0,
-        total: 0
-    });
-
-    useEffect(() => {
-        loadCategories();
-    }, []);
-
-    useEffect(() => {
-        loadScenarios();
-    }, [filters.category, filters.difficulty, pagination.offset]);
-
-    const loadCategories = async () => {
-        try {
-            const response = await scenariosAPI.getCategories();
-            setCategories(response.data.data);
-        } catch (err) {
-            console.error('Failed to load categories:', err);
-        }
-    };
-
-    const loadScenarios = async () => {
-        try {
-            setLoading(true);
-            const response = await scenariosAPI.getAll({
-                limit: pagination.limit,
-                offset: pagination.offset,
-                category: filters.category || undefined,
-                difficulty: filters.difficulty || undefined
-            });
-            setScenarios(response.data.data.scenarios);
-            setPagination(prev => ({
-                ...prev,
-                total: response.data.data.total
-            }));
-        } catch (err) {
-            setError(err.response?.data?.message || 'Failed to load scenarios');
-        } finally {
-            setLoading(false);
-        }
-    };
-
-    const handleFilterChange = (key, value) => {
-        setFilters(prev => ({ ...prev, [key]: value }));
-        setPagination(prev => ({ ...prev, offset: 0 }));
-    };
-
-    const filteredScenarios = scenarios.filter(scenario =>
-        scenario.title.toLowerCase().includes(filters.search.toLowerCase()) ||
-        scenario.short_description.toLowerCase().includes(filters.search.toLowerCase())
-    );
-
-    const totalPages = Math.ceil(pagination.total / pagination.limit);
-    const currentPage = Math.floor(pagination.offset / pagination.limit) + 1;
-
-    return (
-        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
-            <div className="mb-8">
-                <h1 className="text-3xl font-bold text-gray-900">Scenarios</h1>
-                <p className="mt-2 text-gray-600">
-                    Practice your decision-making skills with real-world scenarios
-                </p>
-            </div>
-
-            {/* Filters */}
-            <div className="mb-6 flex flex-col sm:flex-row gap-4">
-                <div className="flex-1 relative">
-                    <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 h-5 w-5 text-gray-400" />
-                    <input
-                        type="text"
-                        placeholder="Search scenarios..."
-                        value={filters.search}
-                        onChange={(e) => handleFilterChange('search', e.target.value)}
-                        className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
-                    />
-                </div>
-                
-                <div className="flex gap-4">
-                    <select
-                        value={filters.category}
-                        onChange={(e) => handleFilterChange('category', e.target.value)}
-                        className="px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
-                    >
-                        <option value="">All Categories</option>
-                        {categories.map(cat => (
-                            <option key={cat} value={cat}>{cat}</option>
-                        ))}
-                    </select>
-
-                    <select
-                        value={filters.difficulty}
-                        onChange={(e) => handleFilterChange('difficulty', e.target.value)}
-                        className="px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
-                    >
-                        <option value="">All Difficulties</option>
-                        <option value="easy">Easy</option>
-                        <option value="medium">Medium</option>
-                        <option value="hard">Hard</option>
-                        <option value="expert">Expert</option>
-                    </select>
-                </div>
-            </div>
-
-            {error && <Alert type="error" message={error} onClose={() => setError(null)} />}
-
-            {loading ? (
-                <Loading text="Loading scenarios..." />
-            ) : filteredScenarios.length === 0 ? (
-                <div className="text-center py-12">
-                    <Filter className="h-12 w-12 text-gray-400 mx-auto mb-4" />
-                    <h3 className="text-lg font-medium text-gray-900">No scenarios found</h3>
-                    <p className="text-gray-600">Try adjusting your filters</p>
-                </div>
-            ) : (
-                <>
-                    <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
-                        {filteredScenarios.map(scenario => (
-                            <ScenarioCard key={scenario.id} scenario={scenario} />
-                        ))}
-                    </div>
-
-                    {/* Pagination */}
-                    {totalPages > 1 && (
-                        <div className="mt-8 flex justify-center space-x-2">
-                            <button
-                                onClick={() => setPagination(prev => ({
-                                    ...prev,
-                                    offset: Math.max(0, prev.offset - prev.limit)
-                                }))}
-                                disabled={currentPage === 1}
-                                className="px-4 py-2 border border-gray-300 rounded-md disabled:opacity-50 disabled:cursor-not-allowed hover:bg-gray-50"
-                            >
-                                Previous
-                            </button>
-                            <span className="px-4 py-2 text-gray-600">
-                                Page {currentPage} of {totalPages}
-                            </span>
-                            <button
-                                onClick={() => setPagination(prev => ({
-                                    ...prev,
-                                    offset: prev.offset + prev.limit
-                                }))}
-                                disabled={currentPage === totalPages}
-                                className="px-4 py-2 border border-gray-300 rounded-md disabled:opacity-50 disabled:cursor-not-allowed hover:bg-gray-50"
-                            >
-                                Next
-                            </button>
-                        </div>
-                    )}
-                </>
-            )}
-        </div>
-    );
-};
-
-export default ScenarioDashboard;
\ No newline at end of file

frontend/src/components/scenario/ScenarioDetail.jsx

-import { useState, useEffect, useRef } from 'react';
-import { useParams, useNavigate } from 'react-router-dom';
-import { scenariosAPI, progressAPI } from '../../services/api';
-import { useAuth } from '../../context/ContextUsing';
-import GivensTable from './GivensTable';
-import AnswerOptions from './AnswerOptions';
-import FeedbackModal from './FeedbackModal';
-import Loading from '../common/Loading';
-import Alert from '../common/Alert';
-import { ArrowLeft, Clock, Target, BookOpen } from 'lucide-react';
-
-const ScenarioDetail = () => {
-    const { id } = useParams();
-    const navigate = useNavigate();
-    const { isAuthenticated } = useAuth();
-    
-    const [scenario, setScenario] = useState(null);
-    const [answers, setAnswers] = useState([]);
-    const [loading, setLoading] = useState(true);
-    const [error, setError] = useState(null);
-    const [selectedAnswer, setSelectedAnswer] = useState(null);
-    const [submitting, setSubmitting] = useState(false);
-    const [feedback, setFeedback] = useState(null);
-    const [showFeedback, setShowFeedback] = useState(false);
-    const [timeSpent, setTimeSpent] = useState(0);
-    
-    const timerRef = useRef(null);
-    const startTimeRef = useRef(null);
-
-    useEffect(() => {
-        loadScenario();
-        startTimeRef.current = Date.now();
-        
-        timerRef.current = setInterval(() => {
-            setTimeSpent(Math.floor((Date.now() - startTimeRef.current) / 1000));
-        }, 1000);
-
-        return () => {
-            if (timerRef.current) {
-                clearInterval(timerRef.current);
-            }
-        };
-    }, [id]);
-
-    const loadScenario = async () => {
-        try {
-            setLoading(true);
-            const response = await scenariosAPI.getById(id);
-            setScenario(response.data.data.scenario);
-            setAnswers(response.data.data.answers);
-        } catch (err) {
-            if (err.response?.status === 404) {
-                setError('Scenario not found');
-            } else {
-                setError(err.response?.data?.message || 'Failed to load scenario');
-            }
-        } finally {
-            setLoading(false);
-        }
-    };
-
-    const handleAnswerSelect = (answer) => {
-        if (showFeedback) return;
-        setSelectedAnswer(answer.answer);
-    };
-
-    const handleSubmit = async () => {
-        if (!selectedAnswer || !isAuthenticated) {
-            if (!isAuthenticated) {
-                navigate('/login', { state: { from: { pathname: `/scenarios/${id}` } } });
-            }
-            return;
-        }
-
-        setSubmitting(true);
-        clearInterval(timerRef.current);
-
-        try {
-            const response = await progressAPI.submit({
-                scenarioId: id,
-                selectedAnswer,
-                timeSpentSeconds: timeSpent
-            });
-            console.log("response.data.data=>",response.data.data)
-            setFeedback(response.data.data.feedback);
-            setShowFeedback(true);
-        } catch (err) {
-            setError(err.response?.data?.message || 'Failed to submit answer');
-        } finally {
-            setSubmitting(false);
-        }
-    };
-
-    const formatTime = (seconds) => {
-        const mins = Math.floor(seconds / 60);
-        const secs = seconds % 60;
-        return `${mins}:${secs.toString().padStart(2, '0')}`;
-    };
-
-    const difficultyColors = {
-        easy: 'bg-green-100 text-green-800',
-        medium: 'bg-yellow-100 text-yellow-800',
-        hard: 'bg-orange-100 text-orange-800',
-        expert: 'bg-red-100 text-red-800'
-    };
-
-    if (loading) {
-        return (
-            <div className="min-h-screen flex items-center justify-center">
-                <Loading text="Loading scenario..." />
-            </div>
-        );
-    }
-
-    if (error) {
-        return (
-            <div className="max-w-4xl mx-auto px-4 py-8">
-                <Alert type="error" message={error} />
-                <button
-                    onClick={() => navigate('/scenarios')}
-                    className="mt-4 flex items-center text-indigo-600 hover:text-indigo-800"
-                >
-                    <ArrowLeft className="h-4 w-4 mr-2" />
-                    Back to scenarios
-                </button>
-            </div>
-        );
-    }
-
-    return (
-        <div className="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
-            {/* Header */}
-            <div className="mb-6">
-                <button
-                    onClick={() => navigate('/scenarios')}
-                    className="flex items-center text-gray-600 hover:text-gray-900 mb-4"
-                >
-                    <ArrowLeft className="h-4 w-4 mr-2" />
-                    Back to scenarios
-                </button>
-
-                <div className="flex items-start justify-between">
-                    <div>
-                        <div className="flex items-center space-x-3 mb-2">
-                            {/* <span className="text-sm text-gray-500">{scenario.id}</span> */}
-                            <span className={`px-2 py-1 text-xs font-medium rounded-full ${difficultyColors[scenario.difficultyLevel]}`}>
-                                {scenario.difficultyLevel}
-                            </span>
-                            {scenario.category && (
-                                <span className="px-2 py-1 text-xs font-medium rounded-full bg-indigo-100 text-indigo-800">
-                                    {scenario.category}
-                                </span>
-                            )}
-                        </div>
-                        <h1 className="text-2xl font-bold text-gray-900">{scenario.title}</h1>
-                    </div>
-                    
-                    <div className="flex items-center space-x-2 text-gray-600">
-                        <Clock className="h-5 w-5" />
-                        <span className="font-mono text-lg">{formatTime(timeSpent)}</span>
-                    </div>
-                </div>
-            </div>
-
-            {/* Scenario Content */}
-            <div className="bg-white rounded-lg shadow-md p-6 mb-6">
-                <div className="flex items-center space-x-2 mb-4">
-                    <BookOpen className="h-5 w-5 text-indigo-600" />
-                    <h2 className="text-lg font-semibold text-gray-900">Scenario</h2>
-                </div>
-                <p className="text-gray-700 leading-relaxed">{scenario.scenarioParagraph}</p>
-            </div>
-
-            {/* Givens Table */}
-            <div className="bg-white rounded-lg shadow-md p-6 mb-6">
-                <div className="flex items-center space-x-2 mb-4">
-                    <Target className="h-5 w-5 text-indigo-600" />
-                    <h2 className="text-lg font-semibold text-gray-900">Market Data</h2>
-                </div>
-                <GivensTable data={scenario.givensTable} />
-            </div>
-
-            {/* Answer Options */}
-            <div className="bg-white rounded-lg shadow-md p-6 mb-6">
-                <AnswerOptions
-                    answers={answers}
-                    onSelect={handleAnswerSelect}
-                    disabled={showFeedback || submitting}
-                    selectedAnswer={selectedAnswer}
-                    correctAnswer={feedback?.correctAnswer || (feedback?.correct ? selectedAnswer : null)}
-                    showFeedback={showFeedback}
-                />
-
-                {!showFeedback && (
-                    <div className="mt-6 flex justify-end">
-                        {!isAuthenticated && (
-                            <p className="text-sm text-gray-500 mr-4 self-center">
-                                Please <button onClick={() => navigate('/login')} className="text-indigo-600 hover:underline">login</button> to submit your answer
-                            </p>
-                        )}
-                        <button
-                            onClick={handleSubmit}
-                            disabled={!selectedAnswer || submitting || !isAuthenticated}
-                            className="px-6 py-2 bg-indigo-600 text-white font-medium rounded-lg hover:bg-indigo-700 disabled:opacity-50 disabled:cursor-not-allowed"
-                        >
-                            {submitting ? 'Submitting...' : 'Submit Answer'}
-                        </button>
-                    </div>
-                )}
-            </div>
-
-            {/* Feedback Modal */}
-            <FeedbackModal
-                isOpen={showFeedback}
-                onClose={() => setShowFeedback(false)}
-                feedback={feedback}
-                onNext={() => navigate('/scenarios')}
-            />
-        </div>
-    );
-};
-
-export default ScenarioDetail;
\ No newline at end of file

frontend/src/context/AuthContext.jsx

-import { useState, useEffect, useCallback } from 'react';
-import { authAPI } from '../services/api';
-import { AuthContext } from './ContextUsing';
-import { useNavigate } from 'react-router-dom';
-// import 
+import { createContext, useContext, useState, useEffect } from 'react';
+import api from '../services/api';
 
+const AuthContext = createContext(null);
 
 export const AuthProvider = ({ children }) => {
-    const [user, setUser] = useState(null);
-    const [loading, setLoading] = useState(true);
-    const [error, setError] = useState(null);
-
-   const navigate = useNavigate();
-
-    useEffect(() => {
-        const handleLogout = () => {
-            setUser(null);
-            navigate('/login');
-        };
-
-        window.addEventListener("force-logout", handleLogout);
-
-        return () => {
-            window.removeEventListener("force-logout", handleLogout);
-        };
-    }, [navigate]);
-
-    const loadUser = useCallback(async () => {
-        const token = localStorage.getItem('accessToken');
-        if (!token) {
-            setLoading(false);
-            return;
-        }
-
-        try {
-            const response = await authAPI.getProfile();
-            console.log("response => ", response);
-            setUser(response.data.data.user);
-        } catch (err) {
-            console.log("err => ", err);
-            localStorage.removeItem('accessToken');
-            localStorage.removeItem('refreshToken');
-        } finally {
-            setLoading(false);
-        }
-    }, []);
-
-    useEffect(() => {
-        loadUser();
-    }, [loadUser]);
-
-    const login = async (email, password) => {
-        try {
-            setError(null);
-            const response = await authAPI.login({ email, password });
-            const { user, accessToken, refreshToken } = response.data.data;
-             console.log("refreshToken from UI => ", refreshToken);
-            localStorage.setItem('accessToken', accessToken);
-            localStorage.setItem('refreshToken', refreshToken);
-            setUser(user);
-            
-            return { success: true };
-        } catch (err) {
-            const message = err.response?.data?.message || 'Login failed';
-            setError(message);
-            return { success: false, error: message };
-        }
-    };
-
-    const register = async (username, email, password) => {
-        try {
-            setError(null);
-            const response = await authAPI.register({ username, email, password });
-            const { user, accessToken, refreshToken } = response.data.data;
-            
-            localStorage.setItem('accessToken', accessToken);
-            localStorage.setItem('refreshToken', refreshToken);
-            setUser(user);
-            
-            return { success: true };
-        } catch (err) {
-            const message = err.response?.data?.message || 'Registration failed';
-            setError(message);
-            return { success: false, error: message };
-        }
-    };
-
-    const logout = async () => {
-        try {
-            await authAPI.logout();
-        } catch (err) {
-            console.error('Logout error:', err);
-        } finally {
-            localStorage.removeItem('accessToken');
-            localStorage.removeItem('refreshToken');
-            setUser(null);
-        }
-    };
-
-    const clearError = () => setError(null);
-
-    return (
-        <AuthContext.Provider value={{
-            user,
-            loading,
-            error,
-            login,
-            register,
-            logout,
-            clearError,
-            isAuthenticated: !!user
-        }}>
-            {children}
-        </AuthContext.Provider>
-    );
+  const [user, setUser] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    const token = localStorage.getItem('token');
+    if (token) {
+      api.get('/auth/me')
+        .then(res => setUser(res.data))
+        .catch(() => localStorage.removeItem('token'))
+        .finally(() => setLoading(false));
+    } else {
+      setLoading(false);
+    }
+  }, []);
+
+  const login = async (email, password) => {
+    const res = await api.post('/auth/login', { email, password });
+    localStorage.setItem('token', res.data.token);
+    setUser(res.data.user);
+    return res.data;
+  };
+
+  const register = async (username, email, password) => {
+    const res = await api.post('/auth/register', { username, email, password });
+    localStorage.setItem('token', res.data.token);
+    setUser(res.data.user);
+    return res.data;
+  };
+
+  const logout = () => {
+    localStorage.removeItem('token');
+    setUser(null);
+  };
+
+  return (
+    <AuthContext.Provider value={{ user, login, register, logout, loading }}>
+      {children}
+    </AuthContext.Provider>
+  );
 };
 
+export const useAuth = () => useContext(AuthContext);
\ No newline at end of file

frontend/src/index.css

 @import "tailwindcss";
 
-@layer base {
-  body {
-    @apply antialiased;
-  }
-}
-
-@layer utilities {
-  .line-clamp-2 {
-    display: -webkit-box;
-    -webkit-line-clamp: 2;
-    -webkit-box-orient: vertical;
-    overflow: hidden;
-  }
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+body {
+  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+    sans-serif;
+  background-color: #f3f4f6;
+}
+
+.gradient-bg {
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+}
+
+.card-hover {
+  transition: all 0.3s ease;
+}
+
+.card-hover:hover {
+  transform: translateY(-4px);
+  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
+    0 10px 10px -5px rgba(0, 0, 0, 0.04);
+}
+
+.quiz-option {
+  transition: all 0.2s ease;
+}
+
+.quiz-option:hover {
+  border-color: #6366f1;
+  background-color: #eef2ff;
+}
+
+.quiz-option.selected {
+  border-color: #6366f1;
+  background-color: #e0e7ff;
+}
+
+.quiz-option.correct {
+  border-color: #10b981;
+  background-color: #d1fae5;
+}
+
+.quiz-option.incorrect {
+  border-color: #ef4444;
+  background-color: #fee2e2;
 }

frontend/src/main.jsx

-import React from 'react';
-import ReactDOM from 'react-dom/client';
-import App from './App';
-import './index.css';
-// import { BrowserRouter } from 'react-router-dom';
+import React from 'react'
+import ReactDOM from 'react-dom/client'
+import App from './App.jsx'
+import './styles/index.css'
 
 ReactDOM.createRoot(document.getElementById('root')).render(
-    <React.StrictMode>
-        
-        {/* <BrowserRouter> */}
-        <App />
-        {/* </BrowserRouter> */}
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+)
\ No newline at end of file
-    </React.StrictMode>
-);
\ No newline at end of file

frontend/src/services/api.js

-import axios from "axios";
+// import axios from "axios";
+
+// const API_URL =
+//   import.meta.env.VITE_API_URL ||
+//   "https://scenario-api.caprover.al-arcade.com/api/";
+
+// const api = axios.create({
+//   baseURL: API_URL,
+//   headers: {
+//     "Content-Type": "application/json",
+//   },
+// });
+
+// api.interceptors.request.use(
+//   (config) => {
+//     const token = localStorage.getItem("accessToken");
+//     if (token) {
+//       config.headers.Authorization = `Bearer ${token}`;
+//     }
+//     return config;
+//   },
+
+//   (error) => Promise.reject(error)
+// );
+
+// let isRefreshing = false;
+// let failedQueue = [];
+
+// const processQueue = (error, token = null) => {
+//   failedQueue.forEach((prom) => {
+//     if (error) {
+//       prom.reject(error);
+//     } else {
+//       prom.resolve(token);
+//     }
+//   });
+//   failedQueue = [];
+// };
+
+// api.interceptors.response.use(
+//   (response) => response,
+//   async (error) => {
+//     const originalRequest = error.config;
+
+//     if (
+//       error.response?.status === 401 &&
+//       (error.response?.data?.code === "TOKEN_EXPIRED" ||
+//         error.response?.data?.code === " jwt expired") &&
+//       !originalRequest._retry
+//     ) {
+//       if (isRefreshing) {
+//         return new Promise((resolve, reject) => {
+//           failedQueue.push({ resolve, reject });
+//         })
+//           .then((token) => {
+//             originalRequest.headers.Authorization = `Bearer ${token}`;
+//             return api(originalRequest);
+//           })
+//           .catch((err) => Promise.reject(err));
+//       }
+
+//       originalRequest._retry = true;
+//       isRefreshing = true;
+
+//       try {
+//         const refreshToken = localStorage.getItem("refreshToken");
+//         const response = await axios.post(`${API_URL}/auth/refresh-token`, {
+//           refreshToken,
+//         });
+
+//         const { accessToken, refreshToken: newRefreshToken } =
+//           response.data.data;
+
+//         localStorage.setItem("accessToken", accessToken);
+//         localStorage.setItem("refreshToken", newRefreshToken);
+
+//         processQueue(null, accessToken);
+
+//         originalRequest.headers.Authorization = `Bearer ${accessToken}`;
+//         return api(originalRequest);
+//       } catch (refreshError) {
+//         if (originalRequest.url.includes("/scenarios")) {
+//           console.log(
+//             "Refresh failed, but continuing as guest for scenarios..."
+//           );
+//           localStorage.removeItem("accessToken");
+//           localStorage.removeItem("refreshToken");
+
+//           delete originalRequest.headers.Authorization;
+//           return api(originalRequest);
+//         }
+//         processQueue(refreshError, null);
+//         localStorage.removeItem("accessToken");
+//         localStorage.removeItem("refreshToken");
+
+//         window.dispatchEvent(new Event("force-logout"));
+//         return Promise.reject(refreshError);
+//       } finally {
+//         isRefreshing = false;
+//       }
+//     }
+//     return Promise.reject(error);
+//   }
+// );
+// // Auth API
+// export const authAPI = {
+//   register: (data) => api.post("/auth/register", data),
+//   login: (data) => api.post("/auth/login", data),
+//   logout: () => {
+//     const refreshToken = localStorage.getItem("refreshToken");
+//     return api.post("/auth/logout", { refreshToken });
+//   },
+//   getProfile: () => api.get("/auth/profile"),
+//   refreshToken: (refreshToken) =>
+//     api.post("/auth/refresh-token", { refreshToken }),
+// };
+
+// // Scenarios API
+// export const scenariosAPI = {
+//   getAll: (params) => api.get("/scenarios", { params }),
+//   getById: (id) => api.get(`/scenarios/${id}`),
+//   getCategories: () => api.get("/scenarios/categories"),
+//   getStatistics: (id) => api.get(`/scenarios/${id}/statistics`),
+// };
+
+// // Progress API
+// export const progressAPI = {
+//   submit: (data) => api.post("/progress/submit", data),
+//   getUserProgress: (params) => api.get("/progress", { params }),
+//   getLeaderboard: (limit) =>
+//     api.get("/progress/leaderboard", { params: { limit } }),
+// };
+
+// export default api;
 
-const API_URL =
-  import.meta.env.VITE_API_URL ||
-  "https://scenario-api.caprover.al-arcade.com/api/";
+import axios from "axios";
 
 const api = axios.create({
-  baseURL: API_URL,
-  headers: {
-    "Content-Type": "application/json",
-  },
+  baseURL: import.meta.env.VITE_API_URL || "http://localhost:5000/api",
+  headers: { "Content-Type": "application/json" },
 });
 
-// Request interceptor for adding auth token
-api.interceptors.request.use(
-  (config) => {
-    const token = localStorage.getItem("accessToken");
-    if (token) {
-      config.headers.Authorization = `Bearer ${token}`;
-    }
-    return config;
-  },
-
-  (error) => Promise.reject(error)
-);
-
-// Response interceptor for handling token refresh
-let isRefreshing = false;
-let failedQueue = [];
-
-const processQueue = (error, token = null) => {
-  failedQueue.forEach((prom) => {
-    if (error) {
-      prom.reject(error);
-    } else {
-      prom.resolve(token);
-    }
-  });
-  failedQueue = [];
-};
+api.interceptors.request.use((config) => {
+  const token = localStorage.getItem("token");
+  if (token) {
+    config.headers.Authorization = `Bearer ${token}`;
+  }
+  return config;
+});
 
 api.interceptors.response.use(
   (response) => response,
-  async (error) => {
-    const originalRequest = error.config;
-
-    if (
-      error.response?.status === 401 &&
-      (error.response?.data?.code === "TOKEN_EXPIRED" ||
-        error.response?.data?.code === " jwt expired") &&
-      !originalRequest._retry
-    ) {
-      if (isRefreshing) {
-        return new Promise((resolve, reject) => {
-          failedQueue.push({ resolve, reject });
-        })
-          .then((token) => {
-            originalRequest.headers.Authorization = `Bearer ${token}`;
-            return api(originalRequest);
-          })
-          .catch((err) => Promise.reject(err));
-      }
-
-      originalRequest._retry = true;
-      isRefreshing = true;
-
-      try {
-        const refreshToken = localStorage.getItem("refreshToken");
-        const response = await axios.post(`${API_URL}/auth/refresh-token`, {
-          refreshToken,
-        });
-
-        const { accessToken, refreshToken: newRefreshToken } =
-          response.data.data;
-
-        localStorage.setItem("accessToken", accessToken);
-        localStorage.setItem("refreshToken", newRefreshToken);
-
-        processQueue(null, accessToken);
-
-        originalRequest.headers.Authorization = `Bearer ${accessToken}`;
-        return api(originalRequest);
-      } catch (refreshError) {
-        if (originalRequest.url.includes("/scenarios")) {
-          console.log(
-            "Refresh failed, but continuing as guest for scenarios..."
-          );
-          localStorage.removeItem("accessToken");
-          localStorage.removeItem("refreshToken");
-
-          delete originalRequest.headers.Authorization;
-          return api(originalRequest);
-        }
-        processQueue(refreshError, null);
-        localStorage.removeItem("accessToken");
-        localStorage.removeItem("refreshToken");
-
-        window.dispatchEvent(new Event("force-logout"));
-        return Promise.reject(refreshError);
-      } finally {
-        isRefreshing = false;
-      }
+  (error) => {
+    if (error.response?.status === 401) {
+      localStorage.removeItem("token");
+      window.location.href = "/login";
     }
     return Promise.reject(error);
   }
 );
-// Auth API
-export const authAPI = {
-  register: (data) => api.post("/auth/register", data),
-  login: (data) => api.post("/auth/login", data),
-  logout: () => {
-    const refreshToken = localStorage.getItem("refreshToken");
-    return api.post("/auth/logout", { refreshToken });
-  },
-  getProfile: () => api.get("/auth/profile"),
-  refreshToken: (refreshToken) =>
-    api.post("/auth/refresh-token", { refreshToken }),
-};
-
-// Scenarios API
-export const scenariosAPI = {
-  getAll: (params) => api.get("/scenarios", { params }),
-  getById: (id) => api.get(`/scenarios/${id}`),
-  getCategories: () => api.get("/scenarios/categories"),
-  getStatistics: (id) => api.get(`/scenarios/${id}/statistics`),
-};
-
-// Progress API
-export const progressAPI = {
-  submit: (data) => api.post("/progress/submit", data),
-  getUserProgress: (params) => api.get("/progress", { params }),
-  getLeaderboard: (limit) =>
-    api.get("/progress/leaderboard", { params: { limit } }),
-};
 
 export default api;

frontend/vite.config.js

-import { defineConfig } from 'vite'
-import react from '@vitejs/plugin-react'
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
 
-// https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
-})
+  server: {
+    port: 3000,
+    proxy: {
+      "/api": {
+        target: "http://localhost:5000",
+        changeOrigin: true,
+      },
+    },
+  },
+});