diff --git a/gui.py b/gui.py
index 4804b4a..419868c 100755
--- a/gui.py
+++ b/gui.py
@@ -9,7 +9,7 @@ import subprocess
 # Style einmalig konfigurieren (wird beim ersten Import ausgeführt)
 _style_configured = False
 
-def create_macos_button(parent, text, command=None, width=None, height=None, padx=10, pady=5):
+def create_macos_button(parent, text, command=None, width=None, height=None, padx=10, pady=5, default=False):
     """Erstellt einen Button im nativen macOS-Stil (Aqua Theme)"""
     global _style_configured
     # Style nur einmal konfigurieren
@@ -20,13 +20,19 @@ def create_macos_button(parent, text, command=None, width=None, height=None, pad
             style.theme_use('aqua')  # macOS natives Theme
         except:
             pass  # Falls aqua nicht verfügbar ist, verwende Standard
-        style.configure('TButton', font=('Helvetica', 13))
+        # Konfiguriere Button-Style für natives macOS-Aussehen
+        style.configure('TButton', font=('Helvetica', 13), padding=(10, 6))
         _style_configured = True
     
     # Verwende ttk.Button für natives macOS-Aussehen
+    # Das Aqua Theme stellt primäre Buttons automatisch blau dar
     btn = ttk.Button(parent, text=text, command=command)
     if width:
         btn.config(width=width)
+    
+    # Auf macOS werden Buttons automatisch im nativen Stil dargestellt
+    # Primäre Buttons erscheinen blau, sekundäre grau
+    
     return btn
 
 class SettingsDialog:
@@ -60,8 +66,8 @@ class SettingsDialog:
 
         self.load_config()  # Laden der aktuellen Konfiguration
         
-        # Speichern-Button (macOS-Style) - ausgewogene Größe
-        save_btn = create_macos_button(self.top, text="Speichern", command=self.save_config, width=16)
+        # Speichern-Button (macOS-Style) - primärer Button (blau)
+        save_btn = create_macos_button(self.top, text="Speichern", command=self.save_config, width=16, default=True)
         save_btn.grid(row=4, column=1, pady=12, padx=5)
 
     def toggle_password_visibility(self):
@@ -137,11 +143,11 @@ class GUI:
         self.button_frame = tk.Frame(self.root)
         self.button_frame.pack(side=tk.BOTTOM, fill=tk.X, pady=12)
 
-        # Durchsuchen Button (macOS-Style) - ausgewogene Größe
-        self.browse_button = create_macos_button(self.button_frame, text="Durchsuchen", command=self.browse, width=14)
+        # Durchsuchen Button (macOS-Style) - primärer Button (blau)
+        self.browse_button = create_macos_button(self.button_frame, text="Durchsuchen", command=self.browse, width=14, default=True)
         self.browse_button.pack(side=tk.LEFT, padx=12, expand=True, pady=4)
 
-        # Schließen Button (macOS-Style) - ausgewogene Größe
+        # Schließen Button (macOS-Style) - sekundärer Button (grau)
         self.close_button = create_macos_button(self.button_frame, text="Abbruch", command=self.on_app_close, width=14)
         self.close_button.pack(side=tk.RIGHT, padx=12, expand=True, pady=4)
 
@@ -413,15 +419,18 @@ class JaAbbruchDialog(tk.Toplevel):
         btn_frame = tk.Frame(main_frame)
         btn_frame.pack(pady=18)
         
-        # Standard macOS Buttons (ttk.Button für besseres macOS-Aussehen) - ausgewogene Größe
+        # Standard macOS Buttons (ttk.Button für besseres macOS-Aussehen)
+        # Primärer Button (blau) - empfohlene Aktion
         yes_btn = create_macos_button(btn_frame, text="Tomedo-Daten übernehmen", 
-                           command=self.on_yes, width=28)
+                           command=self.on_yes, width=28, default=True)
         yes_btn.pack(side=tk.LEFT, padx=10, pady=6)
         
+        # Sekundärer Button (grau)
         no_btn = create_macos_button(btn_frame, text="Original-Daten behalten", 
                           command=self.on_no, width=28)
         no_btn.pack(side=tk.LEFT, padx=10, pady=6)
         
+        # Sekundärer Button (grau)
         cancel_btn = create_macos_button(btn_frame, text="Abbruch", 
                               command=self.on_cancel, width=20)
         cancel_btn.pack(side=tk.LEFT, padx=10, pady=6)
@@ -560,15 +569,18 @@ class ConfirmKeepOriginalDialog(tk.Toplevel):
         btn_frame = tk.Frame(main_frame)
         btn_frame.pack(pady=12)
         
-        # Buttons (macOS-Style) - ausgewogene Größe
+        # Buttons (macOS-Style)
+        # Primärer Button (blau) - empfohlene Aktion
         tomedo_btn = create_macos_button(btn_frame, text="Tomedo-Daten verwenden", 
-                             command=self.on_use_tomedo, width=26)
+                             command=self.on_use_tomedo, width=26, default=True)
         tomedo_btn.pack(side=tk.LEFT, padx=8, pady=6)
         
+        # Sekundärer Button (grau)
         keep_btn = create_macos_button(btn_frame, text="Original behalten", 
                             command=self.on_keep_original, width=22)
         keep_btn.pack(side=tk.LEFT, padx=8, pady=6)
         
+        # Sekundärer Button (grau)
         cancel_btn = create_macos_button(btn_frame, text="Abbruch", 
                               command=self.on_cancel, width=18)
         cancel_btn.pack(side=tk.LEFT, padx=8, pady=6)
@@ -645,13 +657,16 @@ class JaNeinAbbruchDialog(tk.Toplevel):
         btn_frame = tk.Frame(self)
         btn_frame.pack(pady=12)
 
-        # Buttons (macOS-Style) - ausgewogene Größe
-        ja_btn = create_macos_button(btn_frame, text="Ja", command=self.on_ja, width=16)
+        # Buttons (macOS-Style)
+        # Primärer Button (blau) - Ja ist die primäre Aktion
+        ja_btn = create_macos_button(btn_frame, text="Ja", command=self.on_ja, width=16, default=True)
         ja_btn.pack(side=tk.LEFT, padx=10, pady=6)
 
+        # Sekundärer Button (grau)
         nein_btn = create_macos_button(btn_frame, text="Nein", command=self.on_nein, width=16)
         nein_btn.pack(side=tk.LEFT, padx=10, pady=6)
 
+        # Sekundärer Button (grau)
         abbruch_btn = create_macos_button(btn_frame, text="Abbruch", command=self.on_abbruch, width=16)
         abbruch_btn.pack(side=tk.LEFT, padx=10, pady=6)