diff --git a/app/src/main/assets/logo.png b/app/src/main/assets/logo.png
new file mode 100644
index 0000000..1a162e8
Binary files /dev/null and b/app/src/main/assets/logo.png differ
diff --git a/app/src/main/java/devs/org/calculator/activities/AudioGalleryActivity.kt b/app/src/main/java/devs/org/calculator/activities/AudioGalleryActivity.kt
index c1e54c7..0af1f16 100644
--- a/app/src/main/java/devs/org/calculator/activities/AudioGalleryActivity.kt
+++ b/app/src/main/java/devs/org/calculator/activities/AudioGalleryActivity.kt
@@ -54,7 +54,7 @@ class AudioGalleryActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         // Implement audio preview
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/devs/org/calculator/activities/BaseGalleryActivity.kt b/app/src/main/java/devs/org/calculator/activities/BaseGalleryActivity.kt
index 1e533b9..5ad2f47 100644
--- a/app/src/main/java/devs/org/calculator/activities/BaseGalleryActivity.kt
+++ b/app/src/main/java/devs/org/calculator/activities/BaseGalleryActivity.kt
@@ -62,7 +62,7 @@ abstract class BaseGalleryActivity : AppCompatActivity() {
         adapter.submitList(files)
     }
 
-    abstract fun openPreview(file: File)
+    abstract fun openPreview()
 
     private fun checkPermissions() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
diff --git a/app/src/main/java/devs/org/calculator/activities/DocumentsActivity.kt b/app/src/main/java/devs/org/calculator/activities/DocumentsActivity.kt
index 18378cd..149d78c 100644
--- a/app/src/main/java/devs/org/calculator/activities/DocumentsActivity.kt
+++ b/app/src/main/java/devs/org/calculator/activities/DocumentsActivity.kt
@@ -54,7 +54,7 @@ class DocumentsActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         // Implement document preview
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/devs/org/calculator/activities/ImageGalleryActivity.kt b/app/src/main/java/devs/org/calculator/activities/ImageGalleryActivity.kt
index 60ad82a..6786395 100644
--- a/app/src/main/java/devs/org/calculator/activities/ImageGalleryActivity.kt
+++ b/app/src/main/java/devs/org/calculator/activities/ImageGalleryActivity.kt
@@ -1,7 +1,6 @@
 package devs.org.calculator.activities
 
 import android.app.RecoverableSecurityException
-import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
@@ -14,10 +13,8 @@ import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.IntentSenderRequest
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.documentfile.provider.DocumentFile
-import androidx.lifecycle.lifecycleScope
 import devs.org.calculator.utils.FileManager
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.io.File
 
@@ -28,62 +25,6 @@ class ImageGalleryActivity : BaseGalleryActivity() {
     private var selectedImageUri: Uri? = null
     private lateinit var pickImageLauncher: ActivityResultLauncher<Intent>
 
-    private suspend fun deletePhotoFromExternalStorage(photoUri: Uri) {
-        withContext(Dispatchers.IO) {
-            try {
-                // First try to delete using DocumentFile
-                val documentFile = DocumentFile.fromSingleUri(this@ImageGalleryActivity, photoUri)
-                if (documentFile?.exists() == true && documentFile.canWrite()) {
-                    val deleted = documentFile.delete()
-                    withContext(Dispatchers.Main) {
-                        if (deleted) {
-                            Toast.makeText(this@ImageGalleryActivity, "File deleted successfully", Toast.LENGTH_SHORT).show()
-                            selectedImageUri = null
-                        } else {
-                            Toast.makeText(this@ImageGalleryActivity, "Failed to delete file", Toast.LENGTH_SHORT).show()
-                        }
-                    }
-                    return@withContext
-                }
-
-                // If DocumentFile approach fails, try content resolver
-                try {
-                    contentResolver.delete(photoUri, null, null)
-                    withContext(Dispatchers.Main) {
-                        Toast.makeText(this@ImageGalleryActivity, "File deleted successfully", Toast.LENGTH_SHORT).show()
-                    }
-                } catch (e: SecurityException) {
-                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-                        val intentSender = when {
-                            Build.VERSION.SDK_INT >= Build.VERSION_CODES.R -> {
-                                MediaStore.createDeleteRequest(contentResolver, listOf(photoUri)).intentSender
-                            }
-                            else -> {
-                                val recoverableSecurityException = e as? RecoverableSecurityException
-                                recoverableSecurityException?.userAction?.actionIntent?.intentSender
-                            }
-                        }
-                        intentSender?.let { sender ->
-                            withContext(Dispatchers.Main) {
-                                intentSenderLauncher.launch(
-                                    IntentSenderRequest.Builder(sender).build()
-                                )
-                            }
-                        }
-                    }
-                }
-            } catch (e: Exception) {
-                withContext(Dispatchers.Main) {
-                    Toast.makeText(
-                        this@ImageGalleryActivity,
-                        "Error deleting file: ${e.message}",
-                        Toast.LENGTH_LONG
-                    ).show()
-                }
-            }
-        }
-    }
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setupIntentSenderLauncher()
@@ -156,10 +97,9 @@ class ImageGalleryActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         val intent = Intent(this, PreviewActivity::class.java).apply {
-            putExtra(PreviewActivity.EXTRA_FILE_PATH, file.absolutePath)
-            putExtra(PreviewActivity.EXTRA_FILE_TYPE, fileType.name)
+            putExtra("type", fileType)
         }
         startActivity(intent)
     }
diff --git a/app/src/main/java/devs/org/calculator/activities/VideoGalleryActivity.kt b/app/src/main/java/devs/org/calculator/activities/VideoGalleryActivity.kt
index ed72f2b..6de8b31 100644
--- a/app/src/main/java/devs/org/calculator/activities/VideoGalleryActivity.kt
+++ b/app/src/main/java/devs/org/calculator/activities/VideoGalleryActivity.kt
@@ -55,10 +55,9 @@ class VideoGalleryActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         val intent = Intent(this, PreviewActivity::class.java).apply {
-            putExtra(PreviewActivity.EXTRA_FILE_PATH, file.absolutePath)
-            putExtra(PreviewActivity.EXTRA_FILE_TYPE, fileType.name)
+            putExtra("type", fileType)
         }
         startActivity(intent)
     }
diff --git a/app/src/main/res/layout/activity_preview.xml b/app/src/main/res/layout/activity_preview.xml
index b3b88ad..4713a58 100644
--- a/app/src/main/res/layout/activity_preview.xml
+++ b/app/src/main/res/layout/activity_preview.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
@@ -8,12 +9,44 @@
         android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="?attr/actionBarSize"
-        android:background="?attr/colorPrimary" />
+        android:background="?attr/colorPrimary"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
     <androidx.viewpager.widget.ViewPager
         android:id="@+id/viewPager"
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:layout_weight="1" />
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/toolbar" />
 
-</LinearLayout>
\ No newline at end of file
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_horizontal"
+        android:orientation="horizontal"
+        android:padding="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/viewPager"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/unhide"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="6dp"
+            android:text="Unhide" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/delete"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="6dp"
+            android:text="Delete" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file