diff --git a/api.lua b/api.lua
index 12511d3..85979fb 100644
--- a/api.lua
+++ b/api.lua
@@ -77,6 +77,9 @@ API.eventutils = type(_G.C_EventUtils) == "table"
 API.timer = type(_G.C_Timer) == "table"
   and type(_G.C_Timer.After) == "function"
 
+API.regionmouseover = _G.UIParent
+  and type(_G.UIParent.IsMouseOver) == "function"
+
 -- ClassicAPI v1.12.5 made nameplate lifecycle events reload-safe by clearing
 -- and rebuilding their token/wrapper state around /reload. Older builds can
 -- expose the same event names without those guarantees, so keep them on the
@@ -362,6 +365,14 @@ API.Defer = function(callback)
   end
 end
 
+API.IsMouseOver = function(region, topOffset, bottomOffset, leftOffset, rightOffset)
+  if API.regionmouseover and region then
+    return region:IsMouseOver(topOffset, bottomOffset, leftOffset, rightOffset)
+      and true or false
+  end
+  return false
+end
+
 API.GetContainerNumFreeSlots = function(bag)
   if API.inventory then
     return _G.C_Container.GetContainerNumFreeSlots(bag)
diff --git a/mods/minimap-clean.lua b/mods/minimap-clean.lua
index fee3813..cd4513b 100644
--- a/mods/minimap-clean.lua
+++ b/mods/minimap-clean.lua
@@ -1,4 +1,5 @@
 local T = ShaguTweaks.T
+local API = ShaguTweaks.API
 
 local module = ShaguTweaks:register({
   title = T["Minimap Clean"],
@@ -120,6 +121,11 @@ module.enable = function(self)
   local THROTTLE = 0.1
   local MARGIN = 30
 
+  -- ClassicAPI's native Region:IsMouseOver handles cursor scaling and frame
+  -- bounds directly. Without that capability, leave the feature inactive
+  -- instead of restoring the old permanent Lua coordinate polling path.
+  if not API or not API.regionmouseover then return end
+
   self.frame = self.frame or CreateFrame("Frame")
 
   -- Prime the cache once. Future scans only happen when the minimap child count
@@ -131,18 +137,7 @@ module.enable = function(self)
     if self.elapsed < THROTTLE then return end
     self.elapsed = 0
 
-    local x, y = GetCursorPosition()
-    local scale = Minimap:GetEffectiveScale()
-    local mx, my = x / scale, y / scale
-
-    local left = Minimap:GetLeft()
-    local right = Minimap:GetRight()
-    local bottom = Minimap:GetBottom()
-    local top = Minimap:GetTop()
-    if not left or not right or not bottom or not top then return end
-
-    local isOver = mx >= (left - MARGIN) and mx <= (right + MARGIN)
-      and my >= (bottom - MARGIN) and my <= (top + MARGIN)
+    local isOver = API.IsMouseOver(Minimap, MARGIN, -MARGIN, -MARGIN, MARGIN)
 
     if isOver then
       self.leaveTime = nil