diff --git a/app/Http/Requests/LoginRequest.php b/app/Http/Requests/LoginRequest.php
index 9bb6b71..f6a4fea 100644
--- a/app/Http/Requests/LoginRequest.php
+++ b/app/Http/Requests/LoginRequest.php
@@ -20,8 +20,8 @@
         : array
         {
             return [
-                'email'    => 'required|email',
-                'password' => 'required'
+                'login'    => 'required',
+                'password' => 'required',
             ];
         }
 
@@ -37,11 +37,19 @@
         {
             $this->ensureIsNotRateLimited();
 
-            if (!Auth::attempt($this->only('email', 'password'), $this->boolean('remember'))) {
+            $credentials = $this->only('login', 'password');
+            $loginField  = filter_var($credentials['login'], FILTER_VALIDATE_EMAIL) ? 'email' : 'nik';
+
+            $authData = [
+                $loginField => $credentials['login'],
+                'password'  => $credentials['password'],
+            ];
+
+            if (!Auth::attempt($authData, $this->boolean('remember'))) {
                 RateLimiter::hit($this->throttleKey());
 
                 throw ValidationException::withMessages([
-                    'email' => trans('auth.failed'),
+                    'login' => trans('auth.failed'),
                 ]);
             }
 
diff --git a/resources/views/index.blade.php b/resources/views/index.blade.php
index bfa2508..e9a690b 100644
--- a/resources/views/index.blade.php
+++ b/resources/views/index.blade.php
@@ -24,10 +24,10 @@
                     </div>
                     <div class="flex flex-col gap-1">
                         <label class="form-label text-gray-900">
-                            Email
+                            Email or NIK
                         </label>
-                        <input class="w-full input @error('email') border-danger @enderror" placeholder="email@email.com" type="email" name="email" value="">
-                        @error('email')
+                        <input class="w-full input @error('login') border-danger @enderror" placeholder="Enter your email or NIK" type="text" name="login" value="{{ old('login') }}">
+                        @error('login')
                         <em class="alert text-danger text-sm">{{ $message }}</em>
                         @enderror
                     </div>