/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Enemy = Container.expand(function (type, x, y) {
	var self = Container.call(this);
	self.type = type;
	self.isVisible = false;
	var enemyGraphics = self.attachAsset(type === 'light' ? 'lightEnemy' : 'shadowEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	self.updateVisibility = function () {
		if (self.type === 'light') {
			self.isVisible = currentRealm === 'light';
		} else {
			self.isVisible = currentRealm === 'shadow';
		}
		enemyGraphics.alpha = self.isVisible ? 1.0 : 0.3;
	};
	self.update = function () {
		self.x -= gameSpeed;
		self.updateVisibility();
		if (self.isVisible && runner.intersects(self)) {
			LK.getSound('hit').play();
			gameOver();
		}
		if (self.x < -100) {
			self.destroy();
			for (var i = enemies.length - 1; i >= 0; i--) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
		}
	};
	return self;
});
var Platform = Container.expand(function (type, x, y) {
	var self = Container.call(this);
	self.type = type;
	self.isVisible = false;
	var platformGraphics = self.attachAsset(type === 'light' ? 'lightPlatform' : 'shadowPlatform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	self.updateVisibility = function () {
		if (self.type === 'light') {
			self.isVisible = currentRealm === 'light';
		} else {
			self.isVisible = currentRealm === 'shadow';
		}
		platformGraphics.alpha = self.isVisible ? 1.0 : 0.3;
	};
	self.update = function () {
		self.x -= gameSpeed;
		self.updateVisibility();
		if (self.x < -200) {
			self.destroy();
			for (var i = platforms.length - 1; i >= 0; i--) {
				if (platforms[i] === self) {
					platforms.splice(i, 1);
					break;
				}
			}
		}
	};
	return self;
});
var PowerUp = Container.expand(function (x, y) {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	self.collected = false;
	self.update = function () {
		self.x -= gameSpeed;
		self.rotation += 0.1;
		if (!self.collected && runner.intersects(self)) {
			self.collected = true;
			LK.getSound('collect').play();
			LK.setScore(LK.getScore() + 10);
			scoreTxt.setText(LK.getScore());
			self.destroy();
			for (var i = powerups.length - 1; i >= 0; i--) {
				if (powerups[i] === self) {
					powerups.splice(i, 1);
					break;
				}
			}
		}
		if (self.x < -50) {
			self.destroy();
			for (var i = powerups.length - 1; i >= 0; i--) {
				if (powerups[i] === self) {
					powerups.splice(i, 1);
					break;
				}
			}
		}
	};
	return self;
});
var Runner = Container.expand(function () {
	var self = Container.call(this);
	var runnerGraphics = self.attachAsset('runner', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.velocityY = 0;
	self.gravity = 0.8;
	self.jumpPower = -18;
	self.onGround = false;
	self.lastGrounded = false;
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		// Check platform collisions
		self.onGround = false;
		for (var i = 0; i < platforms.length; i++) {
			var platform = platforms[i];
			if (platform.isVisible && self.intersects(platform)) {
				if (self.velocityY > 0 && self.y - 80 < platform.y) {
					self.y = platform.y;
					self.velocityY = 0;
					self.onGround = true;
					break;
				}
			}
		}
		// Check if fell off screen
		if (self.y > 2732 + 100) {
			gameOver();
		}
		self.lastGrounded = self.onGround;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
var currentRealm = 'light';
var gameSpeed = 8;
var runner;
var platforms = [];
var enemies = [];
var powerups = [];
var spawnTimer = 0;
var gameRunning = true;
var distance = 0;
// UI Elements
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 150;
scoreTxt.y = 50;
LK.gui.topLeft.addChild(scoreTxt);
var realmTxt = new Text2('Light Realm', {
	size: 50,
	fill: 0xFFD700
});
realmTxt.anchor.set(0.5, 0);
realmTxt.x = 0;
realmTxt.y = 50;
LK.gui.top.addChild(realmTxt);
var distanceTxt = new Text2('Distance: 0', {
	size: 40,
	fill: 0xFFFFFF
});
distanceTxt.anchor.set(1, 0);
distanceTxt.x = -20;
distanceTxt.y = 50;
LK.gui.topRight.addChild(distanceTxt);
// Initialize runner
runner = game.addChild(new Runner());
runner.x = 300;
runner.y = 1500;
// Create initial platforms
for (var i = 0; i < 10; i++) {
	var platformType = Math.random() < 0.5 ? 'light' : 'shadow';
	var platform = game.addChild(new Platform(platformType, 400 + i * 300, 1500 + Math.random() * 400 - 200));
	platforms.push(platform);
}
function switchRealm() {
	if (currentRealm === 'light') {
		currentRealm = 'shadow';
		game.setBackgroundColor(0x2c1810);
		realmTxt.setText('Shadow Realm');
		realmTxt.fill = "#663399";
	} else {
		currentRealm = 'light';
		game.setBackgroundColor(0x87ceeb);
		realmTxt.setText('Light Realm');
		realmTxt.fill = "#ffd700";
	}
	LK.getSound('realmSwitch').play();
	LK.effects.flashScreen(currentRealm === 'light' ? 0xffd700 : 0x663399, 200);
}
function jump() {
	if (runner.onGround) {
		runner.velocityY = runner.jumpPower;
		LK.getSound('jump').play();
	}
}
function spawnPlatform() {
	var platformType = Math.random() < 0.5 ? 'light' : 'shadow';
	var platform = game.addChild(new Platform(platformType, 2200, 1200 + Math.random() * 800));
	platforms.push(platform);
}
function spawnEnemy() {
	if (Math.random() < 0.3) {
		var enemyType = Math.random() < 0.5 ? 'light' : 'shadow';
		var enemy = game.addChild(new Enemy(enemyType, 2200, 1400 + Math.random() * 600));
		enemies.push(enemy);
	}
}
function spawnPowerUp() {
	if (Math.random() < 0.15) {
		var powerup = game.addChild(new PowerUp(2200, 1300 + Math.random() * 700));
		powerups.push(powerup);
	}
}
function gameOver() {
	if (gameRunning) {
		gameRunning = false;
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
	}
}
// Event handlers
game.down = function (x, y, obj) {
	if (gameRunning) {
		if (y < 1366) {
			switchRealm();
		} else {
			jump();
		}
	}
};
// Main game loop
game.update = function () {
	if (!gameRunning) return;
	// Update distance and score
	distance += gameSpeed;
	if (LK.ticks % 10 === 0) {
		LK.setScore(LK.getScore() + 1);
		scoreTxt.setText('Score: ' + LK.getScore());
		distanceTxt.setText('Distance: ' + Math.floor(distance / 10));
	}
	// Increase difficulty over time
	if (LK.ticks % 600 === 0) {
		gameSpeed += 0.5;
	}
	// Spawn new elements
	spawnTimer++;
	if (spawnTimer >= 60) {
		spawnPlatform();
		spawnEnemy();
		spawnPowerUp();
		spawnTimer = 0;
	}
	// Update all platforms visibility
	for (var i = 0; i < platforms.length; i++) {
		platforms[i].updateVisibility();
	}
	// Update all enemies visibility
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].updateVisibility();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -208,14 +208,14 @@
 	if (currentRealm === 'light') {
 		currentRealm = 'shadow';
 		game.setBackgroundColor(0x2c1810);
 		realmTxt.setText('Shadow Realm');
-		realmTxt.style.fill = "#663399";
+		realmTxt.fill = "#663399";
 	} else {
 		currentRealm = 'light';
 		game.setBackgroundColor(0x87ceeb);
 		realmTxt.setText('Light Realm');
-		realmTxt.style.fill = "#ffd700";
+		realmTxt.fill = "#ffd700";
 	}
 	LK.getSound('realmSwitch').play();
 	LK.effects.flashScreen(currentRealm === 'light' ? 0xffd700 : 0x663399, 200);
 }