diff --git a/backend/.env.example b/backend/.env.sample
similarity index 65%
rename from backend/.env.example
rename to backend/.env.sample
index 98f9688..269e5b8 100644
--- a/backend/.env.example
+++ b/backend/.env.sample
@@ -1,3 +1,3 @@
 PORT=5000
 MONGO_URI=mongodb://localhost:27017/githubTracker
-SESSION_SECRET=your-secret-key
+SESSION_SECRET=your-secret-key
\ No newline at end of file
diff --git a/backend/package.json b/backend/package.json
index 53bd64b..4b929b3 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "main": "server.js",
   "scripts": {
-    "start": "nodemon server.js",
+      "start": "nodemon server.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],
diff --git a/backend/server.js b/backend/server.js
index 3f19f00..4aa453d 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -1,39 +1,44 @@
-const express = require('express');
-const mongoose = require('mongoose');
-const session = require('express-session');
-const passport = require('passport');
-const bodyParser = require('body-parser');
-require('dotenv').config();
-const cors = require('cors');
+const express = require("express");
+const mongoose = require("mongoose");
+const session = require("express-session");
+const passport = require("passport");
+const bodyParser = require("body-parser");
+require("dotenv").config();
+const cors = require("cors");
 
 // Passport configuration
-require('./config/passportConfig');
+require("./config/passportConfig");
 
 const app = express();
 
 // CORS configuration
-app.use(cors('*'));
+app.use(cors("*"));
 
 // Middleware
 app.use(bodyParser.json());
-app.use(session({
+app.use(
+  session({
     secret: process.env.SESSION_SECRET,
     resave: false,
     saveUninitialized: false,
-}));
+  })
+);
 app.use(passport.initialize());
 app.use(passport.session());
 
 // Routes
-const authRoutes = require('./routes/auth');
-app.use('/api/auth', authRoutes);
+const authRoutes = require("./routes/auth");
+app.use("/api/auth", authRoutes);
 
 // Connect to MongoDB
-mongoose.connect(process.env.MONGO_URI, {}).then(() => {
-    console.log('Connected to MongoDB');
+mongoose
+  .connect(process.env.MONGO_URI, {})
+  .then(() => {
+    console.log("Connected to MongoDB");
     app.listen(process.env.PORT, () => {
-        console.log(`Server running on port ${process.env.PORT}`);
+      console.log(`Server running on port ${process.env.PORT}`);
     });
-}).catch((err) => {
-    console.log('MongoDB connection error:', err);
-});
+  })
+  .catch((err) => {
+    console.log("MongoDB connection error:", err);
+  });
diff --git a/package.json b/package.json
index ca7db86..390fffb 100644
--- a/package.json
+++ b/package.json
@@ -40,4 +40,5 @@
     "tailwindcss": "^3.4.14",
     "vite": "^5.4.10"
   }
+
 }
diff --git a/src/Routes/Login/Login.tsx b/src/Routes/Login/Login.tsx
index 1c1f495..4b853aa 100644
--- a/src/Routes/Login/Login.tsx
+++ b/src/Routes/Login/Login.tsx
@@ -1,6 +1,7 @@
 import React, { useState, ChangeEvent, FormEvent } from "react";
 import axios from "axios";
 import { useNavigate } from "react-router-dom"; // Import the hook for navigation
+import toast from "react-hot-toast";
 
 const backendUrl = import.meta.env.VITE_BACKEND_URL;
 interface LoginFormData {
@@ -9,7 +10,10 @@ interface LoginFormData {
 }
 
 const Login: React.FC = () => {
-  const [formData, setFormData] = useState<LoginFormData>({ email: "", password: "" });
+  const [formData, setFormData] = useState<LoginFormData>({
+    email: "",
+    password: "",
+  });
   const [message, setMessage] = useState<string>("");
 
   const navigate = useNavigate(); // Initialize the navigate hook
@@ -22,18 +26,18 @@ const Login: React.FC = () => {
   const handleSubmit = async (e: FormEvent) => {
     e.preventDefault();
     try {
-      const response = await axios.post(`${backendUrl}/api/auth/login`,
-        formData,
-        
+      const response = await axios.post(
+        `${backendUrl}/api/auth/login`,
+        formData
       );
-      setMessage(response.data.message); // Show success message from backend
+      toast.success(response.data.message); // Show success message from backend
 
       // Navigate to /home if login is successful
-      if (response.data.message === 'Login successful') {
+      if (response.data.message === "Login successful") {
         navigate("/home");
       }
     } catch (error: any) {
-      setMessage(error.response?.data?.message || "Something went wrong");
+      toast.error(error.response?.data?.message || "Something went wrong");
     }
   };
 
@@ -70,10 +74,9 @@ const Login: React.FC = () => {
           Login
         </button>
       </form>
-      {message && <p className="text-center text-red-500 mt-4">{message}</p>}
+      {/* {message && <p className="text-center text-red-500 mt-4">{message}</p>} */}
     </div>
   );
 };
 
 export default Login;
-
diff --git a/src/Routes/Signup/Signup.tsx b/src/Routes/Signup/Signup.tsx
index 40edaa8..160d312 100644
--- a/src/Routes/Signup/Signup.tsx
+++ b/src/Routes/Signup/Signup.tsx
@@ -1,6 +1,7 @@
 import React, { useState, ChangeEvent, FormEvent } from "react";
 import axios from "axios";
 import { useNavigate } from "react-router-dom";
+import toast from "react-hot-toast";
 
 const backendUrl = import.meta.env.VITE_BACKEND_URL;
 interface SignUpFormData {
@@ -10,7 +11,11 @@ interface SignUpFormData {
 }
 
 const SignUp: React.FC = () => {
-  const [formData, setFormData] = useState<SignUpFormData>({ username: "", email: "", password: "" });
+  const [formData, setFormData] = useState<SignUpFormData>({
+    username: "",
+    email: "",
+    password: "",
+  });
   const [message, setMessage] = useState<string>("");
 
   const navigate = useNavigate();
@@ -27,14 +32,17 @@ const SignUp: React.FC = () => {
         `${backendUrl}/api/auth/signup`,
         formData // Include cookies for session
       );
-      setMessage(response.data.message); // Show success message from backend
+      toast.success(response.data.message); // Show success message from backend
 
       // Navigate to login page after successful signup
-      if (response.data.message === 'User created successfully') {
+      if (response.data.message === "User created successfully") {
         navigate("/login");
       }
     } catch (error: any) {
-      setMessage(error.response?.data?.message || "Something went wrong");
+      if (error.status === 404) {
+        toast.error("User not found");
+      } else
+        toast.error(error.response?.data?.message || "Something went wrong");
     }
   };
 
@@ -82,7 +90,7 @@ const SignUp: React.FC = () => {
           Sign Up
         </button>
       </form>
-      {message && <p className="text-center text-red-500 mt-4">{message}</p>}
+      {/* {message && <p className="text-center text-red-500 mt-4">{message}</p>} */}
     </div>
   );
 };
diff --git a/src/components/Navbar.tsx b/src/components/Navbar.tsx
index f7ea2f2..71c4b21 100644
--- a/src/components/Navbar.tsx
+++ b/src/components/Navbar.tsx
@@ -1,5 +1,5 @@
-import { Link } from 'react-router-dom';
-import { useState } from 'react';
+import { Link } from "react-router-dom";
+import { useState } from "react";
 
 const Navbar: React.FC = () => {
   const [isOpen, setIsOpen] = useState<boolean>(false);
@@ -42,7 +42,17 @@ const Navbar: React.FC = () => {
           <Link
             to="/login"
             className="text-lg font-medium hover:text-gray-300 transition-all px-2 py-1 border border-transparent hover:border-gray-400 rounded"
-          >Login</Link>
+          >
+            Login
+          </Link>
+
+          {/* signup button add */}
+          <Link
+            to="/signup"
+            className="text-lg font-medium hover:text-gray-300 transition-all px-2 py-1 border border-transparent hover:border-gray-400 rounded"
+          >
+            Signup
+          </Link>
         </div>
 
         {/* Mobile Menu Button */}
@@ -102,6 +112,21 @@ const Navbar: React.FC = () => {
             >
               Contributors
             </Link>
+            {/* signup and login button add on mobile screen */}
+            <Link
+              to="/login"
+              className="block text-lg font-medium hover:text-gray-300 transition-all px-2 py-1 border border-transparent hover:border-gray-400 rounded"
+              onClick={() => setIsOpen(false)}
+            >
+              Login
+            </Link>
+            <Link
+              to="/signup"
+              className="block text-lg font-medium hover:text-gray-300 transition-all px-2 py-1 border border-transparent hover:border-gray-400 rounded"
+              onClick={() => setIsOpen(false)}
+            >
+              Signup
+            </Link>
           </div>
         </div>
       )}
diff --git a/src/hooks/useGitHubAuth.ts b/src/hooks/useGitHubAuth.ts
index 4ac6139..5d6c0e7 100644
--- a/src/hooks/useGitHubAuth.ts
+++ b/src/hooks/useGitHubAuth.ts
@@ -1,5 +1,6 @@
 import { useState } from 'react';
 import { Octokit } from '@octokit/core';
+import toast from 'react-hot-toast';
 
 export const useGitHubAuth = () => {
   const [username, setUsername] = useState('');
@@ -7,7 +8,8 @@ export const useGitHubAuth = () => {
   const [error, setError] = useState('');
 
   const getOctokit = () => {
-    if (!username || !token) return null;
+
+    if (!username || !token) return;
     return new Octokit({ auth: token });
   };
 
diff --git a/src/hooks/useGitHubData.ts b/src/hooks/useGitHubData.ts
index 9add583..72c60b7 100644
--- a/src/hooks/useGitHubData.ts
+++ b/src/hooks/useGitHubData.ts
@@ -1,4 +1,5 @@
 import { useState, useCallback } from 'react';
+import toast from 'react-hot-toast';
 
 export const useGitHubData = (octokit) => {
   const [issues, setIssues] = useState([]);
@@ -22,8 +23,9 @@ export const useGitHubData = (octokit) => {
   };
 
   const fetchData = useCallback(async (username) => {
-    if (!octokit || !username) return;
-
+    if (!octokit || !username) {
+      toast.error("PAT not found"); return
+    }
     setLoading(true);
     setError('');
 
@@ -42,11 +44,26 @@ export const useGitHubData = (octokit) => {
           per_page: 100,
         }),
       ]);
-
       setIssues(issuesResponse);
       setPrs(prsResponse);
-    } catch (err) {
-      setError(err.message);
+
+      if (issuesResponse?.length || prsResponse?.length) toast.success(
+        `Fetched ${issuesResponse.length} issues and ${prsResponse.length} PRs successfully.`
+      );
+
+      else toast("⚠️ No issues or PRs found", { icon: "🕵️‍♂️" });
+
+
+
+    } catch (err: any) {
+      if (err.status === 401 || err.status === 403) {
+        toast.error("Please provide a valid GitHub token ");
+      }
+      else if (err.status === 422) toast.error("User not found")
+      else {
+        toast.error("something went wrong while fetching data")
+      }
+      // setError("Failed to fetched github date")
     } finally {
       setLoading(false);
     }
@@ -56,7 +73,7 @@ export const useGitHubData = (octokit) => {
     issues,
     prs,
     loading,
-    error,
+    // error,
     fetchData,
   };
 };
\ No newline at end of file
diff --git a/src/pages/Home/Home.tsx b/src/pages/Home/Home.tsx
index cab0b7d..548708b 100644
--- a/src/pages/Home/Home.tsx
+++ b/src/pages/Home/Home.tsx
@@ -74,7 +74,8 @@ const Home: React.FC = () => {
   // Handle data submission to fetch GitHub data
   const handleSubmit = (e: React.FormEvent<HTMLFormElement>): void => {
     e.preventDefault();
-    fetchData(username);
+    const datafetch = fetchData(username);
+    console.log("fetch user detail: ", datafetch);
   };
 
   // Format date strings into a readable format
@@ -83,13 +84,14 @@ const Home: React.FC = () => {
   };
 
   // Filter data based on selected criteria
-  const filterData = (
-    data: GitHubItem[],
-    filterType: string
-  ): GitHubItem[] => {
+  const filterData = (data: GitHubItem[], filterType: string): GitHubItem[] => {
     let filteredData = [...data];
 
-    if (filterType === "open" || filterType === "closed" || filterType === "merged") {
+    if (
+      filterType === "open" ||
+      filterType === "closed" ||
+      filterType === "merged"
+    ) {
       filteredData = filteredData.filter((item) =>
         filterType === "merged"
           ? item.pull_request?.merged_at
@@ -160,7 +162,11 @@ const Home: React.FC = () => {
               required
               sx={{ flex: 1 }}
             />
-            <Button type="submit" variant="contained" sx={{ minWidth: "120px" }}>
+            <Button
+              type="submit"
+              variant="contained"
+              sx={{ minWidth: "120px" }}
+            >
               Fetch Data
             </Button>
           </Box>
@@ -210,12 +216,18 @@ const Home: React.FC = () => {
           gap: 2,
         }}
       >
-        <Tabs value={tab} onChange={(e, newValue) => setTab(newValue)} sx={{ flex: 1 }}>
+        <Tabs
+          value={tab}
+          onChange={(e, newValue) => setTab(newValue)}
+          sx={{ flex: 1 }}
+        >
           <Tab label={`Issues (${filterData(issues, issueFilter).length})`} />
           <Tab label={`Pull Requests (${filterData(prs, prFilter).length})`} />
         </Tabs>
         <FormControl sx={{ minWidth: 150 }}>
-          <InputLabel sx={{ fontSize: "14px", color: "#555" }}>State</InputLabel>
+          <InputLabel sx={{ fontSize: "14px", color: "#555" }}>
+            State
+          </InputLabel>
           <Select
             value={tab === 0 ? issueFilter : prFilter}
             onChange={(e) =>
@@ -261,7 +273,9 @@ const Home: React.FC = () => {
                 <TableHead>
                   <TableRow>
                     <TableCell sx={{ textAlign: "left" }}>Title</TableCell>
-                    <TableCell sx={{ textAlign: "center" }}>Repository</TableCell>
+                    <TableCell sx={{ textAlign: "center" }}>
+                      Repository
+                    </TableCell>
                     <TableCell sx={{ textAlign: "center" }}>State</TableCell>
                     <TableCell sx={{ textAlign: "left" }}>Created</TableCell>
                   </TableRow>