diff --git a/katrain/gui.kv b/katrain/gui.kv
index e127dac..c2fb002 100644
--- a/katrain/gui.kv
+++ b/katrain/gui.kv
@@ -1075,18 +1075,18 @@
                         AnalysisControls:
                             id: analysis_controls
                             size_hint_y: None
-                            height: 1 if root.zen > 0 else max(sp(50),min(sp(75),self.width / 13.5))
+                            height: 1 if root.zen > 0 else max(sp(Theme.CONTROLS_PANEL_MIN_HEIGHT),min(sp(Theme.CONTROLS_PANEL_MAX_HEIGHT),self.width / Theme.CONTROLS_PANEL_ASPECT_RATIO))
                             opacity: 0 if root.zen > 0 else 1
                         BadukPanWidget:
                             id: board_gui
                         BadukPanControls:
                             id: board_controls
                             size_hint_y: None
-                            height: 1 if root.zen > 0 else max(sp(50),min(sp(75),self.width / 13.5))
+                            height: 1 if root.zen > 0 else max(sp(Theme.CONTROLS_PANEL_MIN_HEIGHT),min(sp(Theme.CONTROLS_PANEL_MAX_HEIGHT),self.width / Theme.CONTROLS_PANEL_ASPECT_RATIO))
                             opacity: 0 if root.zen > 0 else 1
                     MDBoxLayout:
                         size_hint_x: None
-                        width: 1 if root.zen == 2 else self.height * 0.4
+                        width: 1 if root.zen == 2 else self.height * Theme.RIGHT_PANEL_ASPECT_RATIO
                         opacity: 0 if root.zen == 2 else 1
                         orientation: 'vertical'
                         PlayAnalyzeSelect:
diff --git a/katrain/gui/theme.py b/katrain/gui/theme.py
index 3b1296c..102f1f0 100644
--- a/katrain/gui/theme.py
+++ b/katrain/gui/theme.py
@@ -49,6 +49,10 @@ class Theme:
     MISTAKE_BUTTON_COLOR = [0.79, 0.06, 0.06, 1]
 
     # gui spacing
+    RIGHT_PANEL_ASPECT_RATIO = 0.4 # W/H
+    CONTROLS_PANEL_ASPECT_RATIO = 13.5 # W/H
+    CONTROLS_PANEL_MIN_HEIGHT = 50
+    CONTROLS_PANEL_MAX_HEIGHT = 75 # dp
     CP_SPACING = 6
     CP_SMALL_SPACING = 3
     CP_PADDING = 6