Synchronize TUN mode label availability

Signed-off-by: Loren Eteval <loren.eteval@proton.me>

Furious/Qt/StyleSheets/Base.py

@@ -47,7 +47,8 @@ def baseStyleSheet(palette):
                 background-color: transparent;
             }}
 
-            QLabel:disabled {{
+            QLabel:disabled,
+            QLabel#SettingsCardTitle:disabled {{
                 color: {palette['disabled']};
             }}
 

Furious/Window/HomePage.py

@@ -944,6 +944,7 @@ class HomePage(Mixins.QTranslatable, QMainWindow):
         """Gate connection-sensitive Home controls during lifecycle transitions."""
         self.systemProxyComboBox.setEnabled(bool(enabled))
         self.tunModeSwitch.setEnabled(bool(enabled) and self._tunModeAvailable)
+        self.tunModeLabel.setEnabled(self.tunModeSwitch.isEnabled())
 
     @QtCore.Slot()
     def handleServerSelectionChanged(self, *_args):

Furious/Window/SettingsPage.py

@@ -649,6 +649,7 @@ class SettingsPage(Mixins.QTranslatable, QMainWindow):
             _('Route system traffic through the active proxy connection.'),
         )
         self.tunModeCard.checkBox.setEnabled(self._tunModeAvailable)
+        self.tunModeCard.titleLabel.setEnabled(self.tunModeCard.checkBox.isEnabled())
 
         AppSettingsController().tunModeChanged.connect(
             self.tunModeCard.checkBox.syncCheckedAnimated
@@ -1123,6 +1124,7 @@ class SettingsPage(Mixins.QTranslatable, QMainWindow):
     def setConnectionControlsEnabled(self, enabled: bool):
         """Disable connection-sensitive settings during a transition."""
         self.tunModeCard.checkBox.setEnabled(bool(enabled) and self._tunModeAvailable)
+        self.tunModeCard.titleLabel.setEnabled(self.tunModeCard.checkBox.isEnabled())
         self.systemProxyCard.comboBox.setEnabled(bool(enabled))
 
     def showEvent(self, event):