diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index 927be84..30c6c2a 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -4,24 +4,15 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
-        <DropdownSelection timestamp="2025-04-30T08:17:33.877118700Z">
+        <DropdownSelection timestamp="2025-05-28T13:22:50.758963400Z">
           <Target type="DEFAULT_BOOT">
             <handle>
-              <DeviceId pluginId="LocalEmulator" identifier="path=C:\Users\seemi\.android\avd\I_am_Here.avd" />
+              <DeviceId pluginId="PhysicalDevice" identifier="serial=R59W6010B5Z" />
             </handle>
           </Target>
         </DropdownSelection>
         <DialogSelection />
       </SelectionState>
-      <SelectionState runConfigName="MainActivity">
-        <option name="selectionMode" value="DROPDOWN" />
-      </SelectionState>
-      <SelectionState runConfigName="MainActivity (1)">
-        <option name="selectionMode" value="DROPDOWN" />
-      </SelectionState>
-      <SelectionState runConfigName="MainActivity (2)">
-        <option name="selectionMode" value="DROPDOWN" />
-      </SelectionState>
     </selectionStates>
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 98dadd9..8d6df26 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -5,7 +5,7 @@ configurations.all {
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
-    id("com.google.gms.google-services")
+    id("com.google.gms.google-services") version "4.4.2" apply false
 }
 
 android {
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index a6beb8b..2845fd9 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -23,7 +23,7 @@
         >
 
         <activity
-            android:name=".MainActivity"
+            android:name=".LoginActivity"
             android:exported="true"
             android:label="@string/app_name">
             <intent-filter>
@@ -33,6 +33,11 @@
             </intent-filter>
         </activity>
 
+
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="false" />
         <service
             android:name=".MyFirebaseMessagingService"
             android:exported="false">
diff --git a/app/src/main/java/com/example/iamhere/LoginActivity.kt b/app/src/main/java/com/example/iamhere/LoginActivity.kt
new file mode 100644
index 0000000..7e461ae
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/LoginActivity.kt
@@ -0,0 +1,17 @@
+package com.example.iamhere
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.example.iamhere.ui.login.LoginFragment
+
+class LoginActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_login) // 로그인 레이아웃 연결
+
+        // 처음 실행 시 LoginFragment 띄우기
+        supportFragmentManager.beginTransaction()
+            .replace(R.id.fragment_container, LoginFragment())
+            .commit()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/iamhere/MainActivity.kt b/app/src/main/java/com/example/iamhere/MainActivity.kt
index c92a812..304f3e0 100644
--- a/app/src/main/java/com/example/iamhere/MainActivity.kt
+++ b/app/src/main/java/com/example/iamhere/MainActivity.kt
@@ -21,6 +21,9 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
+
+
+        Log.d("MainActivity", "MainActivity 실행됨")
         val navView = findViewById<BottomNavigationView>(R.id.nav_view)
         val navHostFragment = supportFragmentManager
             .findFragmentById(R.id.nav_host_fragment_activity_main) as NavHostFragment
diff --git a/app/src/main/java/com/example/iamhere/model/LoginRequest.kt b/app/src/main/java/com/example/iamhere/model/LoginRequest.kt
new file mode 100644
index 0000000..e262838
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/model/LoginRequest.kt
@@ -0,0 +1,7 @@
+package com.example.iamhere.model
+
+data class LoginRequest(
+    val login_id: String,
+    val password: String,
+    val userType: String
+)
diff --git a/app/src/main/java/com/example/iamhere/model/LoginResponse.kt b/app/src/main/java/com/example/iamhere/model/LoginResponse.kt
new file mode 100644
index 0000000..490d76e
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/model/LoginResponse.kt
@@ -0,0 +1,20 @@
+package com.example.iamhere.model
+
+import com.google.gson.annotations.SerializedName
+
+data class LoginResponse(
+    @SerializedName("access_token")
+    val accessToken: String,
+
+    @SerializedName("token_type")
+    val tokenType: String,
+
+    @SerializedName("user_name")
+    val userName: String,
+
+    @SerializedName("user_id") //not login_id!
+    val userId: String,
+
+    @SerializedName("today_attendance")
+    val today_attendance: TodayLecture? // Optional 처리
+)
diff --git a/app/src/main/java/com/example/iamhere/network/LoginApi.kt b/app/src/main/java/com/example/iamhere/network/LoginApi.kt
new file mode 100644
index 0000000..20ec23a
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/network/LoginApi.kt
@@ -0,0 +1,14 @@
+package com.example.iamhere.network
+
+import com.example.iamhere.model.LoginRequest
+import com.example.iamhere.model.LoginResponse
+import retrofit2.Call
+
+import retrofit2.http.Body
+import retrofit2.http.POST
+
+interface LoginApi {
+    @POST("login") // 실제 서버 주소 경로에 맞게 수정
+    suspend fun login(@Body request: LoginRequest): LoginResponse //suspend로 비동기 처리
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/iamhere/network/RetrofitClient.kt b/app/src/main/java/com/example/iamhere/network/RetrofitClient.kt
index 09bbaaf..7d0adb4 100644
--- a/app/src/main/java/com/example/iamhere/network/RetrofitClient.kt
+++ b/app/src/main/java/com/example/iamhere/network/RetrofitClient.kt
@@ -4,8 +4,12 @@ import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
 
 object RetrofitClient {
+
     private const val BASE_URL = "http://34.64.121.178:8000/"  // ← 예시 GCP IP
 
+    //private const val BASE_URL = "http://10.0.2.2:8000/"  //실제 디바이스의 경우 네트워크의 로컬 ip가필요
+    //private const val BASE_URL = "http://192.168.219.109:8000/"
+
     val attendanceApi: AttendanceApi by lazy {
         Retrofit.Builder()
             .baseUrl(BASE_URL)
@@ -13,4 +17,12 @@ object RetrofitClient {
             .build()
             .create(AttendanceApi::class.java)
     }
+    // loginApi 초기화
+    val loginApi: LoginApi by lazy {
+        Retrofit.Builder()  // Retrofit 객체 다시 생성
+            .baseUrl(BASE_URL)  // 기본 URL 설정
+            .addConverterFactory(GsonConverterFactory.create())  // GsonConverterFactory 추가
+            .build()
+            .create(LoginApi::class.java)  // LoginApi 인터페이스 구현
+    }
 }
diff --git a/app/src/main/java/com/example/iamhere/ui/login/LoginFragment.kt b/app/src/main/java/com/example/iamhere/ui/login/LoginFragment.kt
new file mode 100644
index 0000000..4b415ac
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/ui/login/LoginFragment.kt
@@ -0,0 +1,96 @@
+package com.example.iamhere.ui.login
+
+import android.annotation.SuppressLint
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.EditText
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import com.example.iamhere.R
+import android.content.Intent
+import android.util.Log
+import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.lifecycleScope
+
+import com.example.iamhere.MainActivity
+import com.example.iamhere.model.LoginRequest
+import com.example.iamhere.model.LoginResponse
+import com.example.iamhere.network.RetrofitClient
+import kotlinx.coroutines.launch
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+
+class LoginFragment : Fragment() {
+
+    private val viewModel: LoginViewModel by viewModels()
+
+    @SuppressLint("MissingInflatedId")
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val view = inflater.inflate(R.layout.fragment_login, container, false)
+
+        val studentButton = view.findViewById<Button>(R.id.studentButton)
+        val professorButton = view.findViewById<Button>(R.id.professorButton)
+        val loginButton = view.findViewById<Button>(R.id.loginButton)
+
+        val idEditText = view.findViewById<EditText>(R.id.editTextId)
+        val pwEditText = view.findViewById<EditText>(R.id.editTextPassword)
+
+        studentButton.setOnClickListener {
+            viewModel.setUserType("학생")
+            Toast.makeText(context, "학생 로그인 선택됨", Toast.LENGTH_SHORT).show()
+        }
+
+        professorButton.setOnClickListener {
+            viewModel.setUserType("교수")
+            Toast.makeText(context, "교수 로그인 선택됨", Toast.LENGTH_SHORT).show()
+        }
+
+        loginButton.setOnClickListener {
+            Log.d("LoginFragment", "로그인 버튼 눌림")
+            val id = idEditText.text.toString().trim()
+            val pw = pwEditText.text.toString().trim()
+            val userType = viewModel.userType.value ?: "학생"
+
+            val loginRequest = LoginRequest(id, pw,userType)
+
+            lifecycleScope.launch {
+                try {
+                    val response = RetrofitClient.loginApi.login(loginRequest) // suspend 함수 호출
+                    val token = response.accessToken
+                    if (token != null) {
+                        // 토큰 저장
+                        val prefs = requireContext().getSharedPreferences(
+                            "auth",
+                            AppCompatActivity.MODE_PRIVATE
+                        )
+                        prefs.edit().putString("access_token", token).apply()
+
+                        Toast.makeText(context, "$userType 로그인 성공", Toast.LENGTH_SHORT).show()
+
+                        // MainActivity 등으로 이동
+                        val intent = Intent(requireContext(), MainActivity::class.java)
+                        startActivity(intent)
+                        requireActivity().finish()
+                    } else {
+                        Toast.makeText(context, "토큰이 없습니다", Toast.LENGTH_SHORT).show()
+                    }
+                } catch (e: Exception) {
+                    Toast.makeText(context, "로그인 실패: ${e.message}", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+
+        return view
+    }
+}
+
+
+
diff --git a/app/src/main/java/com/example/iamhere/ui/login/LoginViewModel.kt b/app/src/main/java/com/example/iamhere/ui/login/LoginViewModel.kt
new file mode 100644
index 0000000..280a842
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/ui/login/LoginViewModel.kt
@@ -0,0 +1,14 @@
+package com.example.iamhere.ui.login
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class LoginViewModel : ViewModel() {
+    private val _userType = MutableLiveData("학생")  // 기본값: 학생
+    val userType: LiveData<String> = _userType
+
+    fun setUserType(type: String) {
+        _userType.value = type
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/iamhere/ui/mypage/MypageFragment.java b/app/src/main/java/com/example/iamhere/ui/mypage/MypageFragment.java
new file mode 100644
index 0000000..f44b376
--- /dev/null
+++ b/app/src/main/java/com/example/iamhere/ui/mypage/MypageFragment.java
@@ -0,0 +1,6 @@
+package com.example.iamhere.ui.mypage;
+
+import androidx.fragment.app.Fragment;
+
+public class MypageFragment extends Fragment {
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/iamhere/ui/mypage/MypageFragment.kt b/app/src/main/java/com/example/iamhere/ui/mypage/MypageFragment.kt
deleted file mode 100644
index e69de29..0000000
diff --git a/app/src/main/java/com/example/iamhere/ui/notifications/NotificationsFragment.kt b/app/src/main/java/com/example/iamhere/ui/notifications/NotificationsFragment.kt
index d5a7888..55ca1d4 100644
--- a/app/src/main/java/com/example/iamhere/ui/notifications/NotificationsFragment.kt
+++ b/app/src/main/java/com/example/iamhere/ui/notifications/NotificationsFragment.kt
@@ -38,7 +38,7 @@ class NotificationsFragment : Fragment() {
         super.onViewCreated(view, savedInstanceState)
 
         val retrofit = Retrofit.Builder()
-            .baseUrl("http://34.64.206.110:8000/")  // ✅ 실제 서버 주소로 수정
+            .baseUrl("http://34.64.121.178:8000/")  // ✅ 실제 서버 주소로 수정
             .addConverterFactory(GsonConverterFactory.create())
             .build()
 
diff --git a/app/src/main/res/drawable/professor_button_background.xml b/app/src/main/res/drawable/professor_button_background.xml
new file mode 100644
index 0000000..25d701d
--- /dev/null
+++ b/app/src/main/res/drawable/professor_button_background.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- 전체 배경 (흰색 or 투명) -->
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="#FFFFFF"/> <!-- 배경: 흰색 -->
+        </shape>
+    </item>
+
+    <!-- 아래 테두리 선 -->
+    <item android:bottom="0dp" android:top="56dp">
+        <shape android:shape="rectangle">
+            <solid android:color="@color/purple_200"/>
+        </shape>
+    </item>
+
+</layer-list>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/student_button_background.xml b/app/src/main/res/drawable/student_button_background.xml
new file mode 100644
index 0000000..85db47c
--- /dev/null
+++ b/app/src/main/res/drawable/student_button_background.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- 전체 배경 (흰색 or 투명) -->
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="#FFFFFF"/> <!-- 배경: 흰색 -->
+        </shape>
+    </item>
+
+    <!-- 아래 테두리 선 -->
+    <item android:bottom="0dp" android:top="56dp">
+        <shape android:shape="rectangle">
+            <solid android:color="#0D47A1"/>
+        </shape>
+    </item>
+
+</layer-list>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
new file mode 100644
index 0000000..b25ce8d
--- /dev/null
+++ b/app/src/main/res/layout/activity_login.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <FrameLayout
+        android:id="@+id/fragment_container"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/layout/fragment_login.xml b/app/src/main/res/layout/fragment_login.xml
new file mode 100644
index 0000000..3a61831
--- /dev/null
+++ b/app/src/main/res/layout/fragment_login.xml
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="24dp">
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="200dp" />
+
+    <!-- 학생 / 교수 선택 -->
+    <LinearLayout
+        android:orientation="horizontal"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center">
+
+        <androidx.appcompat.widget.AppCompatButton
+            android:id="@+id/studentButton"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="60dp"
+            android:text="학생"
+            android:textSize="20sp"
+            android:textColor="#000000"
+            android:background="@drawable/student_button_background"
+            android:backgroundTint="@null"/>
+
+        <androidx.appcompat.widget.AppCompatButton
+            android:id="@+id/professorButton"
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="60dp"
+            android:text="교수"
+            android:textSize="20sp"
+            android:textColor="#000000"
+            android:background="@drawable/professor_button_background"
+            android:backgroundTint="@null"/>
+    </LinearLayout>
+
+    <!-- 아이디/비밀번호 -->
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp">
+
+        <EditText
+            android:id="@+id/editTextId"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="30dp"
+            android:hint="아이디" />
+
+        <EditText
+            android:id="@+id/editTextPassword"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="비밀번호"
+            android:inputType="textPassword"
+            android:layout_marginTop="8dp" />
+
+        <Button
+            android:id="@+id/loginButton"
+            android:layout_width="180dp"
+            android:layout_height="60dp"
+            android:layout_gravity="center"
+            android:text="로그인"
+            android:textSize="17sp"
+            android:backgroundTint="#FF6200EE"
+            android:layout_marginTop="40dp"/>
+    </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_mypage.xml b/app/src/main/res/layout/fragment_mypage.xml
new file mode 100644
index 0000000..77d9ef6
--- /dev/null
+++ b/app/src/main/res/layout/fragment_mypage.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/navigation/mobile_navigation.xml b/app/src/main/res/navigation/mobile_navigation.xml
index 327cddf..d5ef23f 100644
--- a/app/src/main/res/navigation/mobile_navigation.xml
+++ b/app/src/main/res/navigation/mobile_navigation.xml
@@ -35,7 +35,7 @@
 
     <fragment
         android:id="@+id/navigation_mypage"
-        android:name="com.example.iamhere.ui.notifications.MypageFragment"
+        android:name="com.example.iamhere.ui.mypage.MypageFragment"
         android:label="로그인/로그아웃"
         tools:layout="@layout/fragment_mypage" />
 </navigation>
\ No newline at end of file
diff --git a/app/src/main/res/xml/network_security_config.xml b/app/src/main/res/xml/network_security_config.xml
index fa049a6..543d79d 100644
--- a/app/src/main/res/xml/network_security_config.xml
+++ b/app/src/main/res/xml/network_security_config.xml
@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <network-security-config>
     <domain-config cleartextTrafficPermitted="true">
+
+        <domain includeSubdomains="false">34.64.206.110</domain> //이전
+        <domain includeSubdomains="false">10.0.2.2</domain> //local
+        <domain includeSubdomains="false">192.168.219.109</domain> //pc
         <domain includeSubdomains="true">34.64.121.178</domain>
     </domain-config>
 </network-security-config>
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 115ea1e..64cdc50 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-agp = "8.9.0"
+agp = "8.10.0"
 cardview = "1.0.0"
 glide = "4.15.1"
 kotlin = "2.0.21"