diff --git a/packages/framework/src/index.ts b/packages/framework/src/index.ts
index a7c126a..e2ebaf7 100644
--- a/packages/framework/src/index.ts
+++ b/packages/framework/src/index.ts
@@ -5,6 +5,7 @@ export type { IDisposable, DisposableItem } from "./utils";
 // Drag & drop utilities
 export { dragDropEventEffect, DragDropEventType } from "./utils";
 export type { DragDropEvent, DragDropCallback } from "./utils";
+export { hoverEffect } from "./utils";
 
 // Data-driven object spawning
 export { spawnEffect } from "./spawner";
diff --git a/packages/framework/src/utils/hover.ts b/packages/framework/src/utils/hover.ts
new file mode 100644
index 0000000..f3fe67e
--- /dev/null
+++ b/packages/framework/src/utils/hover.ts
@@ -0,0 +1,28 @@
+type HoverCallback = (hovering: boolean) => void;
+export function hoverEffect(
+  gameObject: Phaser.GameObjects.GameObject,
+  callback: HoverCallback,
+) {
+  let isHovering = false;
+  const onPointerOver = () => {
+    if (isHovering) return;
+    isHovering = true;
+    callback(true);
+  };
+  const onPointerOut = () => {
+    if (!isHovering) return;
+    isHovering = false;
+    callback(false);
+  };
+
+  gameObject.on("pointerover", onPointerOver);
+  gameObject.on("pointerout", onPointerOut);
+  const cleanup = () => {
+    gameObject.off("pointerover", onPointerOver);
+    gameObject.off("pointerout", onPointerOut);
+    gameObject.off("destroy", cleanup);
+  };
+
+  gameObject.once("destroy", cleanup);
+  return cleanup;
+}
diff --git a/packages/framework/src/utils/index.ts b/packages/framework/src/utils/index.ts
index 4847db9..ed5ac9f 100644
--- a/packages/framework/src/utils/index.ts
+++ b/packages/framework/src/utils/index.ts
@@ -6,3 +6,4 @@ export {
   type DragDropEvent,
   type DragDropCallback,
 } from "./dnd";
+export * from "./hover";
diff --git a/packages/sts-like-viewer/src/config/index.ts b/packages/sts-like-viewer/src/config/index.ts
index 038c17f..5d80261 100644
--- a/packages/sts-like-viewer/src/config/index.ts
+++ b/packages/sts-like-viewer/src/config/index.ts
@@ -156,6 +156,12 @@ export const NEGATIVE_EFFECTS = new Set([
   "poison",
 ]);
 
+export const CARD_CONFIG = {
+  WIDTH: 140,
+  HEIGHT: 200,
+  CORNER_RADIUS: 8,
+} as const;
+
 export const GAME_CONFIG: Phaser.Types.Core.GameConfig = {
   width: 1920,
   height: 1080,
diff --git a/packages/sts-like-viewer/src/gameobjects/CardContainer.ts b/packages/sts-like-viewer/src/gameobjects/CardContainer.ts
index 9e0343e..755903a 100644
--- a/packages/sts-like-viewer/src/gameobjects/CardContainer.ts
+++ b/packages/sts-like-viewer/src/gameobjects/CardContainer.ts
@@ -1,8 +1,7 @@
-import Phaser from "phaser";
-import type {
-  CardData,
-  GameCard,
-} from "boardgame-core/samples/slay-the-spire-like";
+import Phaser, { Tweens } from "phaser";
+import type { GameCard } from "boardgame-core/samples/slay-the-spire-like";
+import { CARD_CONFIG } from "@/config";
+import { hoverEffect } from "boardgame-phaser";
 
 export interface CardContainerOptions {
   card: GameCard;
@@ -10,9 +9,9 @@ export interface CardContainerOptions {
   playable?: boolean;
 }
 
-const CARD_WIDTH = 140;
-const CARD_HEIGHT = 200;
-const CORNER_RADIUS = 8;
+const CARD_WIDTH = CARD_CONFIG.WIDTH;
+const CARD_HEIGHT = CARD_CONFIG.HEIGHT;
+const CORNER_RADIUS = CARD_CONFIG.CORNER_RADIUS;
 
 export class CardContainer extends Phaser.GameObjects.Container {
   private bg!: Phaser.GameObjects.Rectangle;
@@ -110,16 +109,9 @@ export class CardContainer extends Phaser.GameObjects.Container {
       this.input.cursor = options.playable ? "pointer" : "not-allowed";
     }
 
-    this.on("pointerover", () => {
-      if (options.playable && !this._selected) {
-        this.hoverIn();
-      }
-    });
-
-    this.on("pointerout", () => {
-      if (!this._selected) {
-        this.hoverOut();
-      }
+    hoverEffect(this, (hovering) => {
+      if (!options.playable) return;
+      this.playHoverTween(hovering);
     });
 
     this.on("pointerdown", () => {
@@ -129,28 +121,6 @@ export class CardContainer extends Phaser.GameObjects.Container {
     });
   }
 
-  private hoverIn(): void {
-    this.scene.tweens.add({
-      targets: this,
-      y: this.y - 10,
-      scale: 1.08,
-      duration: 150,
-      ease: "Power2",
-    });
-    this.bg.setStrokeStyle(3, 0x88aaff);
-  }
-
-  private hoverOut(): void {
-    this.scene.tweens.add({
-      targets: this,
-      y: this.y + 10,
-      scale: 1,
-      duration: 150,
-      ease: "Power2",
-    });
-    this.bg.setStrokeStyle(2, 0x555577);
-  }
-
   setSelected(selected: boolean): void {
     this._selected = selected;
     if (selected) {
@@ -212,6 +182,20 @@ export class CardContainer extends Phaser.GameObjects.Container {
     });
   }
 
+  private playHoverTween(isHovering: boolean) {
+    this.scene.tweens.add({
+      targets: this,
+      y: isHovering ? this.y - 10 : this.y + 10,
+      scale: isHovering ? 1.08 : 1,
+      duration: 150,
+      ease: "Power2",
+    });
+    this.bg.setStrokeStyle(
+      isHovering ? 3 : 2,
+      isHovering ? 0x88aaff : 0x555577,
+    );
+  }
+
   destroy(fromScene?: boolean): void {
     this.highlight = null;
     super.destroy(fromScene);