fix

src/states/MenuState.h

@@ -53,4 +53,25 @@ private:
     double levelHighlightGlowAlpha = 0.70; // 0..1 base glow alpha
     int levelHighlightThickness = 3; // inner outline thickness (px)
     SDL_Color levelHighlightColor = SDL_Color{80, 200, 255, 200};
+    // Button group pulsing/fade parameters (applies to all four main buttons)
+    double buttonGroupAlpha = 1.0; // current computed alpha (0..1)
+    double buttonPulseTime = 0.0;  // accumulator in ms
+    bool   buttonPulseEnabled = true; // enable/disable pulsing
+    double buttonPulseSpeed = 1.0;  // multiplier for pulse frequency
+    double buttonPulseMinAlpha = 0.60; // minimum alpha during pulse
+    double buttonPulseMaxAlpha = 1.00; // maximum alpha during pulse
+    // Pulse easing mode: 0=sin,1=triangle,2=exponential
+    int    buttonPulseEasing = 1;
+    // Short bright flash when navigating buttons
+    double buttonFlash = 0.0; // transient flash amount (0..1)
+    double buttonFlashAmount = 0.45; // how much flash adds to group alpha
+    double buttonFlashDecay = 0.0025; // linear decay per ms
+    // Exit confirmation HUD state (inline HUD like Options/Level)
+    bool exitPanelVisible = false;
+    bool exitPanelAnimating = false;
+    double exitTransition = 0.0; // 0..1
+    double exitTransitionDurationMs = 360.0;
+    int exitDirection = 1; // 1 show, -1 hide
+    int exitSelectedButton = 0; // 0 = YES (quit), 1 = NO (cancel)
+    double exitScroll = 0.0; // vertical scroll offset for content
 };