diff --git a/app/src/main/res/layout/adapter_pdf_item.xml b/app/src/main/res/layout/adapter_pdf_item.xml
index 7106b6a..a36d032 100644
--- a/app/src/main/res/layout/adapter_pdf_item.xml
+++ b/app/src/main/res/layout/adapter_pdf_item.xml
@@ -3,14 +3,20 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginStart="16dp"
+    android:layout_marginTop="6dp"
+    android:layout_marginEnd="16dp"
+    android:layout_marginBottom="6dp"
+    android:background="@drawable/dr_rounded_corner_12_bg_white"
     android:orientation="vertical"
-    android:paddingStart="16dp"
-    android:paddingTop="16dp"
     tools:ignore="RtlSymmetry">
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="16dp"
         android:gravity="center_vertical"
         android:orientation="horizontal">
 
@@ -48,12 +54,12 @@
 
 
             <LinearLayout
-                android:visibility="gone"
                 android:id="@+id/lock_layout"
                 android:layout_width="56dp"
                 android:layout_height="56dp"
                 android:background="@drawable/dr_item_lock_bg"
-                android:gravity="center">
+                android:gravity="center"
+                android:visibility="gone">
 
                 <ImageView
                     android:layout_width="24dp"
@@ -73,10 +79,10 @@
 
             <TextView
                 android:id="@+id/tvFileName"
+                style="@style/TextViewFont_PopSemiBold"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:ellipsize="middle"
-                style="@style/TextViewFont_PopSemiBold"
                 android:maxLines="1"
                 android:text="@string/app_name"
                 android:textColor="@color/black"
@@ -91,19 +97,19 @@
 
                 <TextView
                     android:id="@+id/tvFileDate"
+                    style="@style/TextViewFont_PopMedium"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    style="@style/TextViewFont_PopMedium"
                     android:text="2月27,2025"
                     android:textColor="@color/black_60"
                     android:textSize="14sp" />
 
                 <TextView
                     android:id="@+id/tvFileSize"
+                    style="@style/TextViewFont_PopMedium"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_marginStart="8dp"
-                    style="@style/TextViewFont_PopMedium"
                     android:text="8.1MB"
                     android:textColor="@color/black_60"
                     android:textSize="14sp" />
@@ -131,6 +137,7 @@
         android:layout_height="0.5dp"
         android:layout_marginTop="16dp"
         android:layout_marginEnd="16dp"
-        android:background="@color/line_color" />
+        android:background="@color/line_color"
+        android:visibility="gone" />
 
 </LinearLayout>
diff --git a/app/src/main/res/layout/fragment_favorite.xml b/app/src/main/res/layout/fragment_favorite.xml
index 7cf3ad2..90b4e71 100644
--- a/app/src/main/res/layout/fragment_favorite.xml
+++ b/app/src/main/res/layout/fragment_favorite.xml
@@ -2,7 +2,6 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/bg_color"
     android:orientation="vertical">
 
     <View
diff --git a/app/src/main/res/layout/fragment_home.xml b/app/src/main/res/layout/fragment_home.xml
index 32995a3..90b4e71 100644
--- a/app/src/main/res/layout/fragment_home.xml
+++ b/app/src/main/res/layout/fragment_home.xml
@@ -2,7 +2,6 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/bg_color"
     android:orientation="vertical">
 
     <View
@@ -13,10 +12,10 @@
     <LinearLayout
         android:id="@+id/noFilesLayout"
         android:layout_width="match_parent"
-        android:visibility="gone"
         android:layout_height="match_parent"
         android:gravity="center"
-        android:orientation="vertical">
+        android:orientation="vertical"
+        android:visibility="gone">
 
         <ImageView
             android:layout_width="wrap_content"
diff --git a/app/src/main/res/layout/fragment_recently.xml b/app/src/main/res/layout/fragment_recently.xml
index c7655f7..ab3b37c 100644
--- a/app/src/main/res/layout/fragment_recently.xml
+++ b/app/src/main/res/layout/fragment_recently.xml
@@ -2,7 +2,6 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/bg_color"
     android:orientation="vertical">
 
     <View
diff --git a/app/src/main/res/layout/fragment_tools.xml b/app/src/main/res/layout/fragment_tools.xml
index c3ca252..d287546 100644
--- a/app/src/main/res/layout/fragment_tools.xml
+++ b/app/src/main/res/layout/fragment_tools.xml
@@ -2,16 +2,16 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/bg_color"
     android:orientation="vertical">
 
     <View
         android:id="@+id/view"
         android:layout_width="match_parent"
         android:layout_height="0dp" />
+
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/tools"/>
+        android:text="@string/tools" />
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-xhdpi/img_no_files_yet.png b/app/src/main/res/mipmap-xhdpi/img_no_files_yet.png
index 83e5866..5e7ffd2 100644
Binary files a/app/src/main/res/mipmap-xhdpi/img_no_files_yet.png and b/app/src/main/res/mipmap-xhdpi/img_no_files_yet.png differ
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index ca18380..42cda27 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -5,12 +5,12 @@
     <color name="purple_700">#FF3700B3</color>
     <color name="teal_200">#FF03DAC5</color>
     <color name="teal_700">#FF018786</color>
-    <color name="black">#FF000000</color>
-    <color name="black_80">#CC000000</color>
-    <color name="black_60">#99000000</color>
+    <color name="black">#222222</color>
+    <color name="black_80">#CC222222</color>
+    <color name="black_60">#99222222</color>
     <color name="white">#FFFFFFFF</color>
     <color name="grey">#E6E6E6</color>
-    <color name="bg_color">#FAFAFA</color>
+    <color name="bg_color">#F9F9F9</color>
     <color name="line_color">#E0E0E0</color>
     <color name="black_img_color">#2c2c2c</color>
     <color name="grey_text_color">#666666</color>