diff --git a/src/App.jsx b/src/App.jsx
index 6791642..1f2f16e 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -5,6 +5,7 @@ import {
   Navigate,
 } from 'react-router-dom';
 import Register from './components/Register';
+import Login from './components/Login';
 import './App.css';
 
 function App() {
@@ -13,6 +14,7 @@ function App() {
       <Routes>
         <Route path="/" element={<Navigate to="/register" replace />} />
         <Route path="/register" element={<Register />} />
+        <Route path="/login" element={<Login />} />
         {/* Add other routes as needed */}
         <Route
           path="/login"
diff --git a/src/components/Login.css b/src/components/Login.css
new file mode 100644
index 0000000..70e8ee5
--- /dev/null
+++ b/src/components/Login.css
@@ -0,0 +1,150 @@
+.login-container {
+  min-height: 100vh;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  padding: 20px;
+}
+
+.login-card {
+  background: white;
+  border-radius: 12px;
+  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
+  padding: 40px;
+  width: 100%;
+  max-width: 420px;
+}
+
+.login-title {
+  color: #333;
+  font-size: 28px;
+  font-weight: 600;
+  text-align: center;
+  margin-bottom: 30px;
+}
+
+.login-form {
+  margin-bottom: 25px;
+}
+
+.form-group {
+  margin-bottom: 20px;
+}
+
+.form-label {
+  display: block;
+  color: #555;
+  font-size: 14px;
+  font-weight: 500;
+  margin-bottom: 6px;
+}
+
+.form-input {
+  width: 100%;
+  padding: 12px 16px;
+  border: 2px solid #e1e5e9;
+  border-radius: 8px;
+  font-size: 16px;
+  transition: all 0.3s ease;
+  box-sizing: border-box;
+}
+
+.form-input:focus {
+  outline: none;
+  border-color: #667eea;
+  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
+}
+
+.form-input.error {
+  border-color: #ef4444;
+}
+
+.form-input:disabled {
+  background-color: #f9fafb;
+  cursor: not-allowed;
+}
+
+.error-message {
+  color: #ef4444;
+  font-size: 13px;
+  margin-top: 5px;
+  display: block;
+}
+
+.submit-error {
+  background-color: #fee;
+  border: 1px solid #fcc;
+  border-radius: 6px;
+  padding: 12px;
+  margin-bottom: 20px;
+  text-align: center;
+}
+
+.form-hint {
+  display: block;
+  color: #6b7280;
+  font-size: 12px;
+  margin-top: 4px;
+}
+
+.submit-btn {
+  width: 100%;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: white;
+  border: none;
+  border-radius: 8px;
+  padding: 14px;
+  font-size: 16px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.3s ease;
+  margin-top: 10px;
+}
+
+.submit-btn:hover:not(:disabled) {
+  transform: translateY(-1px);
+  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
+}
+
+.submit-btn:active:not(:disabled) {
+  transform: translateY(0);
+}
+
+.submit-btn:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.register-link {
+  text-align: center;
+  margin: 20px 0;
+  padding-top: 20px;
+  border-top: 1px solid #e5e7eb;
+}
+
+.register-link p {
+  color: #6b7280;
+  margin: 0;
+}
+
+.link {
+  color: #667eea;
+  text-decoration: none;
+  font-weight: 500;
+}
+
+.link:hover {
+  text-decoration: underline;
+}
+
+/* Responsive adjustments */
+@media (max-width: 480px) {
+  .login-card {
+    padding: 30px 20px;
+  }
+
+  .login-title {
+    font-size: 24px;
+  }
+}
diff --git a/src/components/Login.jsx b/src/components/Login.jsx
new file mode 100644
index 0000000..678e43c
--- /dev/null
+++ b/src/components/Login.jsx
@@ -0,0 +1,161 @@
+import { useState } from 'react';
+import './Login.css';
+import { AUTH_API_BASE_URL } from '../constants/api';
+import { DATA_KEY_ACCESS_TOKEN } from '../constants/app';
+
+// function Login() {
+const Login = () => {
+  const [formData, setFormData] = useState({
+    username: '',
+    password: '',
+  });
+  const [errors, setErrors] = useState({});
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [submitError, setSubmitError] = useState('');
+
+  const handleChange = (e) => {
+    const { name, value } = e.target;
+    setFormData((prev) => ({
+      ...prev,
+      [name]: value,
+    }));
+    // Clear error for this field when user starts typing
+    if (errors[name]) {
+      setErrors((prev) => ({
+        ...prev,
+        [name]: '',
+      }));
+    }
+  };
+
+  const validateForm = () => {
+    const newErrors = {};
+
+    if (!formData.username.trim()) {
+      newErrors.username = 'Username is required';
+    }
+
+    if (!formData.password) {
+      newErrors.password = 'Password is required';
+    } else if (formData.password.length < 6) {
+      newErrors.password = 'Password must be at least 6 characters';
+    }
+
+    return newErrors;
+  };
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    setSubmitError('');
+
+    const formErrors = validateForm();
+    if (Object.keys(formErrors).length > 0) {
+      setErrors(formErrors);
+      return;
+    }
+
+    setIsSubmitting(true);
+
+    try {
+      // Simulate API call
+      await new Promise((resolve) => setTimeout(resolve, 1000));
+
+      const reqBod = {
+        username: formData.username,
+        password: formData.password,
+      };
+      const reponse = await fetch(`${AUTH_API_BASE_URL}/api/v1/login`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(reqBod),
+      });
+
+      if (reponse.ok) {
+        const response = await reponse.json();
+        console.log(`Result: ${response.message}`);
+        const loginResult = response.data[0];
+        const token = loginResult.access_token;
+        console.log(token);
+        localStorage.setItem(DATA_KEY_ACCESS_TOKEN, token);
+        alert(`Login successful! Welcome, ${formData.username}`);
+      } else {
+        console.error('Error logging in');
+      }
+
+      // Reset form
+      setFormData({ username: '', password: '' });
+      setErrors({});
+    } catch (error) {
+      setSubmitError('Login failed. Please try again.');
+      console.error('Login error:', error);
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="login-container">
+      <div className="login-card">
+        <h1 className="login-title">Login</h1>
+
+        {submitError && <div className="submit-error">{submitError}</div>}
+
+        <form className="login-form" onSubmit={handleSubmit} noValidate>
+          <div className="form-group">
+            <label htmlFor="username" className="form-label">
+              Username
+            </label>
+            <input
+              type="text"
+              id="username"
+              name="username"
+              value={formData.username}
+              onChange={handleChange}
+              className={`form-input ${errors.username ? 'error' : ''}`}
+              placeholder="Enter your username"
+              disabled={isSubmitting}
+            />
+            {errors.username && (
+              <span className="error-message">{errors.username}</span>
+            )}
+          </div>
+
+          <div className="form-group">
+            <label htmlFor="password" className="form-label">
+              Password
+            </label>
+            <input
+              type="password"
+              id="password"
+              name="password"
+              value={formData.password}
+              onChange={handleChange}
+              className={`form-input ${errors.password ? 'error' : ''}`}
+              placeholder="Enter your password"
+              disabled={isSubmitting}
+            />
+            {errors.password && (
+              <span className="error-message">{errors.password}</span>
+            )}
+            <span className="form-hint">Must be at least 6 characters</span>
+          </div>
+
+          <button type="submit" className="submit-btn" disabled={isSubmitting}>
+            {isSubmitting ? 'Logging in...' : 'Login'}
+          </button>
+        </form>
+
+        <div className="register-link">
+          <p>
+            Don't have an account?{' '}
+            <a href="register" className="link">
+              Register here
+            </a>
+          </p>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default Login;
diff --git a/src/components/Register.jsx b/src/components/Register.jsx
index 218cd65..32bdb90 100644
--- a/src/components/Register.jsx
+++ b/src/components/Register.jsx
@@ -1,6 +1,8 @@
 import { useState } from 'react';
 import { Link, useNavigate } from 'react-router-dom';
 import './Register.css';
+import { AUTH_API_BASE_URL } from '../constants/api';
+import { DATA_KEY_REGISTERED_USER_ID } from '../constants/app';
 
 const Register = () => {
   const navigate = useNavigate();
@@ -80,18 +82,13 @@ const Register = () => {
       // Prepare data for API call (remove confirmPassword)
       const { confirmPassword, ...userData } = formData;
 
-      // Simulate API call
-      console.log('Submitting registration data:', userData);
-
-      // Mock API call delay
-      await new Promise((resolve) => setTimeout(resolve, 1500));
       const reqBod = {
         phone_number: userData.phoneNumber,
         username: userData.username,
         password: userData.password,
       };
 
-      const response = await fetch('http://localhost:9080/api/v1/register', {
+      const response = await fetch(`${AUTH_API_BASE_URL}/api/v1/register`, {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify(reqBod),
@@ -100,7 +97,8 @@ const Register = () => {
       if (response.ok) {
         alert('Registration successful! Redirecting to login...');
         const res = await response.json();
-        console.log(res.message);
+        console.log(`Result: ${res.message}`);
+        localStorage.setItem(DATA_KEY_REGISTERED_USER_ID, res.data[0].id);
         navigate('/login');
       } else {
         console.error('Error registering');
diff --git a/src/constants/api.js b/src/constants/api.js
new file mode 100644
index 0000000..739c0e4
--- /dev/null
+++ b/src/constants/api.js
@@ -0,0 +1 @@
+export const AUTH_API_BASE_URL = 'http://localhost:9080';
diff --git a/src/constants/app.js b/src/constants/app.js
new file mode 100644
index 0000000..51a207e
--- /dev/null
+++ b/src/constants/app.js
@@ -0,0 +1,2 @@
+export const DATA_KEY_ACCESS_TOKEN = 'access_token';
+export const DATA_KEY_REGISTERED_USER_ID = 'registered_user_id';