diff --git a/__pycache__/custom_file_dialog.cpython-312.pyc b/__pycache__/custom_file_dialog.cpython-312.pyc
index 576bc55..f6df757 100644
Binary files a/__pycache__/custom_file_dialog.cpython-312.pyc and b/__pycache__/custom_file_dialog.cpython-312.pyc differ
diff --git a/custom_file_dialog.py b/custom_file_dialog.py
index 899604c..61bed73 100644
--- a/custom_file_dialog.py
+++ b/custom_file_dialog.py
@@ -244,36 +244,36 @@ class CustomFileDialog(tk.Toplevel):
         paned_window.pack(fill="both", expand=True)
 
         sidebar_frame = ttk.Frame(paned_window, padding=(
-            15, 10, 15, 15), style="Sidebar.TFrame")
+            15, 10, 15, 15))
         paned_window.add(sidebar_frame, weight=0)
 
         paned_window.pane(0, weight=0)
         sidebar_frame.grid_rowconfigure(2, weight=1)
 
-        sidebar_nav_frame = ttk.Frame(sidebar_frame, style="Sidebar.TFrame")
+        sidebar_nav_frame = ttk.Frame(sidebar_frame)
         sidebar_nav_frame.grid(row=0, column=0, sticky="ew")
 
         nav_buttons_container = ttk.Frame(
-            sidebar_nav_frame, style="Sidebar.TFrame")
+            sidebar_nav_frame)
         nav_buttons_container.pack(expand=True)
 
         self.back_button = ttk.Button(
-            nav_buttons_container, image=self.icons['back'], command=self.go_back, state=tk.DISABLED, style="Toolbutton.TButton")
+            nav_buttons_container, image=self.icons['back'], command=self.go_back, state=tk.DISABLED, style="TButton.Borderless.Round")
         self.back_button.pack(side="left")
         Tooltip(self.back_button, "Zurück")
         self.home_button = ttk.Button(nav_buttons_container, image=self.icons['home'], command=lambda: self.navigate_to(
-            os.path.expanduser("~")), style="Toolbutton.TButton")
+            os.path.expanduser("~")), style="TButton.Borderless.Round")
         self.home_button.pack(side="left", padx=2)
         Tooltip(self.home_button, "Home")
         self.forward_button = ttk.Button(
-            nav_buttons_container, image=self.icons['forward'], command=self.go_forward, state=tk.DISABLED, style="Toolbutton.TButton")
+            nav_buttons_container, image=self.icons['forward'], command=self.go_forward, state=tk.DISABLED, style="TButton.Borderless.Round")
         self.forward_button.pack(side="left")
 
         ttk.Separator(sidebar_frame, orient='horizontal').grid(
             row=1, column=0, sticky="ew", pady=5)
 
         sidebar_buttons_frame = ttk.Frame(
-            sidebar_frame, style="Sidebar.TFrame")
+            sidebar_frame)
         sidebar_buttons_frame.grid(row=2, column=0, sticky="nsew")
         sidebar_buttons_config = [
             {'name': 'Computer',
@@ -291,13 +291,13 @@ class CustomFileDialog(tk.Toplevel):
         ]
         for config in sidebar_buttons_config:
             btn = ttk.Button(sidebar_buttons_frame, text=f" {config['name']}", image=config['icon'],
-                             compound="top", command=lambda p=config['path']: self.navigate_to(p), style="Sidebar.TButton")
+                             compound="top", command=lambda p=config['path']: self.navigate_to(p), style="TButton.Borderless")
             btn.pack(fill="x", pady=1)
 
-        storage_frame = ttk.Frame(sidebar_frame, style="Sidebar.TFrame")
+        storage_frame = ttk.Frame(sidebar_frame)
         storage_frame.grid(row=3, column=0, sticky="ew", padx=10)
         self.storage_label = ttk.Label(
-            storage_frame, text="Freier Speicher:", style="Sidebar.TLabel")
+            storage_frame, text="Freier Speicher:")
         self.storage_label.pack(fill="x")
         self.storage_bar = ttk.Progressbar(
             storage_frame, orient="horizontal", length=100, mode="determinate")
@@ -320,16 +320,16 @@ class CustomFileDialog(tk.Toplevel):
         view_switch = ttk.Frame(top_bar, padding=(5, 0), style='Accent.TFrame')
         view_switch.grid(row=0, column=1)
         self.icon_view_button = ttk.Button(view_switch, image=self.icons['icon_view'], command=lambda: (
-            self.view_mode.set("icons"), self.populate_files()), style="Toolbutton_right.TButton")
+            self.view_mode.set("icons"), self.populate_files()), style="TButton.Borderless.Round")
         self.icon_view_button.pack(side="left")
         Tooltip(self.icon_view_button, "Kachelansicht")
         self.list_view_button = ttk.Button(view_switch, image=self.icons['list_view'], command=lambda: (
-            self.view_mode.set("list"), self.populate_files()), style="Toolbutton_right.TButton")
+            self.view_mode.set("list"), self.populate_files()), style="TButton.Borderless.Round")
         self.list_view_button.pack(side="left")
         Tooltip(self.list_view_button, "Listenansicht")
 
         self.hidden_files_button = ttk.Button(
-            top_bar, image=self.icons['hide'], command=self.toggle_hidden_files, style="Toolbutton_right.TButton")
+            top_bar, image=self.icons['hide'], command=self.toggle_hidden_files, style="TButton.Borderless.Round")
         self.hidden_files_button.grid(row=0, column=2, padx=5)
         Tooltip(self.hidden_files_button, "Versteckte Dateien anzeigen")
 
diff --git a/mainwindow.py b/mainwindow.py
index 1bd756d..0610908 100644
--- a/mainwindow.py
+++ b/mainwindow.py
@@ -58,7 +58,7 @@ if __name__ == "__main__":
     style = ttk.Style(root)
     root.tk.call('source', f"{theme_path}/water.tcl")
     try:
-        root.tk.call('set_theme', 'dark')
+        root.tk.call('set_theme', 'light')
     except tk.TclError:
         pass
     root.mainloop()