DarkMode ist existent yeah

views/components/tab_navigation.py

@@ -32,13 +32,8 @@ class TabNavigation(QWidget):
         # Feste Höhe nach Styleguide
         self.setFixedHeight(48)
         
-        # Basis-Styling
-        self.setStyleSheet("""
-            QWidget {
-                background-color: #FFFFFF;
-                border-bottom: 1px solid #E2E8F0;
-            }
-        """)
+        # Set object name for QSS targeting - NO inline styles!
+        self.setObjectName("tab_navigation")
         
         # Layout
         layout = QHBoxLayout(self)
@@ -70,30 +65,7 @@ class TabNavigation(QWidget):
         font.setWeight(QFont.Medium)
         btn.setFont(font)
         
-        btn.setStyleSheet("""
-            QPushButton {
-                background: transparent;
-                border: none;
-                border-bottom: 2px solid transparent;
-                padding: 12px 24px;
-                font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
-                font-size: 15px;
-                font-weight: 500;
-                color: #4A5568;
-                min-width: 100px;
-            }
-            QPushButton:checked {
-                color: #1A365D;
-                border-bottom-color: #3182CE;
-            }
-            QPushButton:hover:!checked {
-                color: #2D3748;
-                background-color: #F7FAFC;
-            }
-            QPushButton:pressed {
-                color: #1A365D;
-            }
-        """)
+        # No inline styles - handled by QSS generator
         
         return btn