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

/**** 
* Classes
****/ 
var AnswerButton = Container.expand(function (text, isCorrect, callback) {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('answerButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var buttonText = new Text2(text, {
		size: 42,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.isCorrect = isCorrect;
	self.callback = callback;
	self.isPressed = false;
	self.down = function (x, y, obj) {
		if (!self.isPressed) {
			self.isPressed = true;
			tween(buttonGraphics, {
				scaleX: 0.92,
				scaleY: 0.92
			}, {
				duration: 120
			});
			buttonGraphics.tint = 0x5a4bdb;
			if (self.callback) {
				self.callback(self.isCorrect);
			}
		}
	};
	return self;
});
var CharacterDisplay = Container.expand(function (character, romanization) {
	var self = Container.call(this);
	var cardShadow = self.attachAsset('characterCardShadow', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.15
	});
	cardShadow.y = 10;
	var cardGraphics = self.attachAsset('characterCard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var charText = new Text2(character, {
		size: 140,
		fill: 0x2f3542
	});
	charText.anchor.set(0.5, 0.5);
	charText.y = -60;
	self.addChild(charText);
	var romText = new Text2(romanization, {
		size: 55,
		fill: 0x3742fa
	});
	romText.anchor.set(0.5, 0.5);
	romText.y = 60;
	self.addChild(romText);
	return self;
});
var MenuButton = Container.expand(function (text, callback) {
	var self = Container.call(this);
	var buttonShadow = self.attachAsset('menuButtonShadow', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.3
	});
	buttonShadow.y = 8;
	var buttonGraphics = self.attachAsset('menuButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var buttonText = new Text2(text, {
		size: 52,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.callback = callback;
	self.down = function (x, y, obj) {
		tween(buttonGraphics, {
			scaleX: 0.95,
			scaleY: 0.95,
			y: 4
		}, {
			duration: 100
		});
		tween(buttonShadow, {
			scaleX: 0.95,
			scaleY: 0.95,
			alpha: 0.5
		}, {
			duration: 100
		});
		if (self.callback) {
			self.callback();
		}
	};
	self.up = function (x, y, obj) {
		tween(buttonGraphics, {
			scaleX: 1.0,
			scaleY: 1.0,
			y: 0
		}, {
			duration: 100
		});
		tween(buttonShadow, {
			scaleX: 1.0,
			scaleY: 1.0,
			alpha: 0.3
		}, {
			duration: 100
		});
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game data
var hiraganaChars = [{
	"char": 'あ',
	rom: 'a'
}, {
	"char": 'い',
	rom: 'i'
}, {
	"char": 'う',
	rom: 'u'
}, {
	"char": 'え',
	rom: 'e'
}, {
	"char": 'お',
	rom: 'o'
}, {
	"char": 'か',
	rom: 'ka'
}, {
	"char": 'き',
	rom: 'ki'
}, {
	"char": 'く',
	rom: 'ku'
}, {
	"char": 'け',
	rom: 'ke'
}, {
	"char": 'こ',
	rom: 'ko'
}, {
	"char": 'が',
	rom: 'ga'
}, {
	"char": 'ぎ',
	rom: 'gi'
}, {
	"char": 'ぐ',
	rom: 'gu'
}, {
	"char": 'げ',
	rom: 'ge'
}, {
	"char": 'ご',
	rom: 'go'
}, {
	"char": 'さ',
	rom: 'sa'
}, {
	"char": 'し',
	rom: 'shi'
}, {
	"char": 'す',
	rom: 'su'
}, {
	"char": 'せ',
	rom: 'se'
}, {
	"char": 'そ',
	rom: 'so'
}, {
	"char": 'ざ',
	rom: 'za'
}, {
	"char": 'じ',
	rom: 'ji'
}, {
	"char": 'ず',
	rom: 'zu'
}, {
	"char": 'ぜ',
	rom: 'ze'
}, {
	"char": 'ぞ',
	rom: 'zo'
}, {
	"char": 'た',
	rom: 'ta'
}, {
	"char": 'ち',
	rom: 'chi'
}, {
	"char": 'つ',
	rom: 'tsu'
}, {
	"char": 'て',
	rom: 'te'
}, {
	"char": 'と',
	rom: 'to'
}, {
	"char": 'だ',
	rom: 'da'
}, {
	"char": 'ぢ',
	rom: 'di'
}, {
	"char": 'づ',
	rom: 'du'
}, {
	"char": 'で',
	rom: 'de'
}, {
	"char": 'ど',
	rom: 'do'
}, {
	"char": 'な',
	rom: 'na'
}, {
	"char": 'に',
	rom: 'ni'
}, {
	"char": 'ぬ',
	rom: 'nu'
}, {
	"char": 'ね',
	rom: 'ne'
}, {
	"char": 'の',
	rom: 'no'
}, {
	"char": 'は',
	rom: 'ha'
}, {
	"char": 'ひ',
	rom: 'hi'
}, {
	"char": 'ふ',
	rom: 'fu'
}, {
	"char": 'へ',
	rom: 'he'
}, {
	"char": 'ほ',
	rom: 'ho'
}, {
	"char": 'ば',
	rom: 'ba'
}, {
	"char": 'び',
	rom: 'bi'
}, {
	"char": 'ぶ',
	rom: 'bu'
}, {
	"char": 'べ',
	rom: 'be'
}, {
	"char": 'ぼ',
	rom: 'bo'
}, {
	"char": 'ぱ',
	rom: 'pa'
}, {
	"char": 'ぴ',
	rom: 'pi'
}, {
	"char": 'ぷ',
	rom: 'pu'
}, {
	"char": 'ぺ',
	rom: 'pe'
}, {
	"char": 'ぽ',
	rom: 'po'
}, {
	"char": 'ま',
	rom: 'ma'
}, {
	"char": 'み',
	rom: 'mi'
}, {
	"char": 'む',
	rom: 'mu'
}, {
	"char": 'め',
	rom: 'me'
}, {
	"char": 'も',
	rom: 'mo'
}, {
	"char": 'や',
	rom: 'ya'
}, {
	"char": 'ゆ',
	rom: 'yu'
}, {
	"char": 'よ',
	rom: 'yo'
}, {
	"char": 'きゃ',
	rom: 'kya'
}, {
	"char": 'きゅ',
	rom: 'kyu'
}, {
	"char": 'きょ',
	rom: 'kyo'
}, {
	"char": 'しゃ',
	rom: 'sha'
}, {
	"char": 'しゅ',
	rom: 'shu'
}, {
	"char": 'しょ',
	rom: 'sho'
}, {
	"char": 'ちゃ',
	rom: 'cha'
}, {
	"char": 'ちゅ',
	rom: 'chu'
}, {
	"char": 'ちょ',
	rom: 'cho'
}, {
	"char": 'にゃ',
	rom: 'nya'
}, {
	"char": 'にゅ',
	rom: 'nyu'
}, {
	"char": 'にょ',
	rom: 'nyo'
}, {
	"char": 'ひゃ',
	rom: 'hya'
}, {
	"char": 'ひゅ',
	rom: 'hyu'
}, {
	"char": 'ひょ',
	rom: 'hyo'
}, {
	"char": 'みゃ',
	rom: 'mya'
}, {
	"char": 'みゅ',
	rom: 'myu'
}, {
	"char": 'みょ',
	rom: 'myo'
}, {
	"char": 'りゃ',
	rom: 'rya'
}, {
	"char": 'りゅ',
	rom: 'ryu'
}, {
	"char": 'りょ',
	rom: 'ryo'
}, {
	"char": 'ら',
	rom: 'ra'
}, {
	"char": 'り',
	rom: 'ri'
}, {
	"char": 'る',
	rom: 'ru'
}, {
	"char": 'れ',
	rom: 're'
}, {
	"char": 'ろ',
	rom: 'ro'
}, {
	"char": 'わ',
	rom: 'wa'
}, {
	"char": 'を',
	rom: 'wo'
}, {
	"char": 'ん',
	rom: 'n'
}];
var katakanaChars = [{
	"char": 'ア',
	rom: 'a'
}, {
	"char": 'イ',
	rom: 'i'
}, {
	"char": 'ウ',
	rom: 'u'
}, {
	"char": 'エ',
	rom: 'e'
}, {
	"char": 'オ',
	rom: 'o'
}, {
	"char": 'カ',
	rom: 'ka'
}, {
	"char": 'キ',
	rom: 'ki'
}, {
	"char": 'ク',
	rom: 'ku'
}, {
	"char": 'ケ',
	rom: 'ke'
}, {
	"char": 'コ',
	rom: 'ko'
}, {
	"char": 'ガ',
	rom: 'ga'
}, {
	"char": 'ギ',
	rom: 'gi'
}, {
	"char": 'グ',
	rom: 'gu'
}, {
	"char": 'ゲ',
	rom: 'ge'
}, {
	"char": 'ゴ',
	rom: 'go'
}, {
	"char": 'サ',
	rom: 'sa'
}, {
	"char": 'シ',
	rom: 'shi'
}, {
	"char": 'ス',
	rom: 'su'
}, {
	"char": 'セ',
	rom: 'se'
}, {
	"char": 'ソ',
	rom: 'so'
}, {
	"char": 'ザ',
	rom: 'za'
}, {
	"char": 'ジ',
	rom: 'ji'
}, {
	"char": 'ズ',
	rom: 'zu'
}, {
	"char": 'ゼ',
	rom: 'ze'
}, {
	"char": 'ゾ',
	rom: 'zo'
}, {
	"char": 'タ',
	rom: 'ta'
}, {
	"char": 'チ',
	rom: 'chi'
}, {
	"char": 'ツ',
	rom: 'tsu'
}, {
	"char": 'テ',
	rom: 'te'
}, {
	"char": 'ト',
	rom: 'to'
}, {
	"char": 'ダ',
	rom: 'da'
}, {
	"char": 'ヂ',
	rom: 'di'
}, {
	"char": 'ヅ',
	rom: 'du'
}, {
	"char": 'デ',
	rom: 'de'
}, {
	"char": 'ド',
	rom: 'do'
}, {
	"char": 'ナ',
	rom: 'na'
}, {
	"char": 'ニ',
	rom: 'ni'
}, {
	"char": 'ヌ',
	rom: 'nu'
}, {
	"char": 'ネ',
	rom: 'ne'
}, {
	"char": 'ノ',
	rom: 'no'
}, {
	"char": 'ハ',
	rom: 'ha'
}, {
	"char": 'ヒ',
	rom: 'hi'
}, {
	"char": 'フ',
	rom: 'fu'
}, {
	"char": 'ヘ',
	rom: 'he'
}, {
	"char": 'ホ',
	rom: 'ho'
}, {
	"char": 'バ',
	rom: 'ba'
}, {
	"char": 'ビ',
	rom: 'bi'
}, {
	"char": 'ブ',
	rom: 'bu'
}, {
	"char": 'ベ',
	rom: 'be'
}, {
	"char": 'ボ',
	rom: 'bo'
}, {
	"char": 'パ',
	rom: 'pa'
}, {
	"char": 'ピ',
	rom: 'pi'
}, {
	"char": 'プ',
	rom: 'pu'
}, {
	"char": 'ペ',
	rom: 'pe'
}, {
	"char": 'ポ',
	rom: 'po'
}, {
	"char": 'マ',
	rom: 'ma'
}, {
	"char": 'ミ',
	rom: 'mi'
}, {
	"char": 'ム',
	rom: 'mu'
}, {
	"char": 'メ',
	rom: 'me'
}, {
	"char": 'モ',
	rom: 'mo'
}, {
	"char": 'ヤ',
	rom: 'ya'
}, {
	"char": 'ユ',
	rom: 'yu'
}, {
	"char": 'ヨ',
	rom: 'yo'
}, {
	"char": 'キャ',
	rom: 'kya'
}, {
	"char": 'キュ',
	rom: 'kyu'
}, {
	"char": 'キョ',
	rom: 'kyo'
}, {
	"char": 'シャ',
	rom: 'sha'
}, {
	"char": 'シュ',
	rom: 'shu'
}, {
	"char": 'ショ',
	rom: 'sho'
}, {
	"char": 'チャ',
	rom: 'cha'
}, {
	"char": 'チュ',
	rom: 'chu'
}, {
	"char": 'チョ',
	rom: 'cho'
}, {
	"char": 'ニャ',
	rom: 'nya'
}, {
	"char": 'ニュ',
	rom: 'nyu'
}, {
	"char": 'ニョ',
	rom: 'nyo'
}, {
	"char": 'ヒャ',
	rom: 'hya'
}, {
	"char": 'ヒュ',
	rom: 'hyu'
}, {
	"char": 'ヒョ',
	rom: 'hyo'
}, {
	"char": 'ミャ',
	rom: 'mya'
}, {
	"char": 'ミュ',
	rom: 'myu'
}, {
	"char": 'ミョ',
	rom: 'myo'
}, {
	"char": 'リャ',
	rom: 'rya'
}, {
	"char": 'リュ',
	rom: 'ryu'
}, {
	"char": 'リョ',
	rom: 'ryo'
}, {
	"char": 'ファ',
	rom: 'fa'
}, {
	"char": 'フィ',
	rom: 'fi'
}, {
	"char": 'フェ',
	rom: 'fe'
}, {
	"char": 'フォ',
	rom: 'fo'
}, {
	"char": 'ラ',
	rom: 'ra'
}, {
	"char": 'リ',
	rom: 'ri'
}, {
	"char": 'ル',
	rom: 'ru'
}, {
	"char": 'レ',
	rom: 're'
}, {
	"char": 'ロ',
	rom: 'ro'
}, {
	"char": 'ワ',
	rom: 'wa'
}, {
	"char": 'ヲ',
	rom: 'wo'
}, {
	"char": 'ン',
	rom: 'n'
}];
// Game state
var gameState = 'menu'; // 'menu', 'learn', 'hiraganaTest', 'katakanaTest'
var currentMode = null;
var currentCharIndex = 0;
var currentQuestion = null;
var answerButtons = [];
var score = 0;
var streak = 0;
var questionsAnswered = 0;
// Load saved progress
var savedScore = storage.bestScore || 0;
var savedStreak = storage.bestStreak || 0;
// Language settings
var currentLanguage = storage.language || 'en'; // 'en' for English, 'ru' for Russian
var uiTexts = {
	en: {
		title: 'Japanese Character Master',
		learnMode: 'Learn Mode',
		hiraganaTest: 'Hiragana Test',
		katakanaTest: 'Katakana Test',
		backToMenu: 'Back to Menu',
		nextCharacter: 'Next Character',
		prevCharacter: 'Previous Character',
		bestScore: 'Best Score: ',
		score: 'Score: ',
		streak: 'Streak: ',
		language: 'Language'
	},
	ru: {
		title: 'Мастер японских символов',
		learnMode: 'Режим изучения',
		hiraganaTest: 'Тест хираганы',
		katakanaTest: 'Тест катаканы',
		backToMenu: 'Назад в меню',
		nextCharacter: 'Следующий символ',
		prevCharacter: 'Предыдущий символ',
		bestScore: 'Лучший результат: ',
		score: 'Счёт: ',
		streak: 'Серия: ',
		language: 'Язык'
	}
};
// UI Elements
var backgroundGradient = game.addChild(LK.getAsset('backgroundGradient', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366,
	alpha: 0.8
}));
var backgroundPanel = game.addChild(LK.getAsset('backgroundPanel', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366,
	alpha: 0.95
}));
var titleText = new Text2(uiTexts[currentLanguage].title, {
	size: 85,
	fill: 0xf1f2f6
});
titleText.anchor.set(0.5, 0.5);
titleText.x = 1024;
titleText.y = 400;
game.addChild(titleText);
var scoreText = new Text2(uiTexts[currentLanguage].bestScore + savedScore, {
	size: 42,
	fill: 0xf1f2f6
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
scoreText.y = 50;
var currentScoreText = new Text2(uiTexts[currentLanguage].score + '0', {
	size: 55,
	fill: 0xf1f2f6
});
currentScoreText.anchor.set(0.5, 0);
currentScoreText.x = 1024;
currentScoreText.y = 200;
game.addChild(currentScoreText);
currentScoreText.visible = false;
var streakText = new Text2(uiTexts[currentLanguage].streak + '0', {
	size: 45,
	fill: 0x2ed573
});
streakText.anchor.set(0.5, 0);
streakText.x = 1024;
streakText.y = 270;
game.addChild(streakText);
streakText.visible = false;
var progressBarBg = game.addChild(LK.getAsset('progressBarBg', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 330
}));
progressBarBg.visible = false;
var progressBar = game.addChild(LK.getAsset('progressBar', {
	anchorX: 0,
	anchorY: 0.5,
	x: 824,
	y: 330,
	scaleX: 0
}));
progressBar.visible = false;
// Menu buttons
var learnButton = game.addChild(new MenuButton(uiTexts[currentLanguage].learnMode, function () {
	startLearnMode();
}));
learnButton.x = 1024;
learnButton.y = 700;
var hiraganaButton = game.addChild(new MenuButton(uiTexts[currentLanguage].hiraganaTest, function () {
	startHiraganaTest();
}));
hiraganaButton.x = 1024;
hiraganaButton.y = 850;
var katakanaButton = game.addChild(new MenuButton(uiTexts[currentLanguage].katakanaTest, function () {
	startKatakanaTest();
}));
katakanaButton.x = 1024;
katakanaButton.y = 1000;
var languageButton = game.addChild(new MenuButton(uiTexts[currentLanguage].language + ': ' + (currentLanguage === 'en' ? 'English' : 'Русский'), function () {
	toggleLanguage();
}));
languageButton.x = 1024;
languageButton.y = 1150;
var backButton = game.addChild(new MenuButton(uiTexts[currentLanguage].backToMenu, function () {
	returnToMenu();
}));
backButton.x = 1024;
backButton.y = 2200;
backButton.visible = false;
var nextButton = game.addChild(new MenuButton(uiTexts[currentLanguage].nextCharacter, function () {
	showNextCharacter();
}));
nextButton.x = 1024;
nextButton.y = 1800;
nextButton.visible = false;
var prevButton = game.addChild(new MenuButton(uiTexts[currentLanguage].prevCharacter, function () {
	showPrevCharacter();
}));
prevButton.x = 1024;
prevButton.y = 1950;
prevButton.visible = false;
// Character display for learn mode
var characterDisplay = null;
// Question character display for tests
var questionCharBg = game.addChild(LK.getAsset('characterCard', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 600
}));
questionCharBg.visible = false;
var questionCharText = new Text2('', {
	size: 180,
	fill: 0x2f3542
});
questionCharText.anchor.set(0.5, 0.5);
questionCharText.x = 1024;
questionCharText.y = 600;
game.addChild(questionCharText);
questionCharText.visible = false;
function hideMenuElements() {
	titleText.visible = false;
	learnButton.visible = false;
	hiraganaButton.visible = false;
	katakanaButton.visible = false;
	languageButton.visible = false;
}
function showMenuElements() {
	titleText.visible = true;
	learnButton.visible = true;
	hiraganaButton.visible = true;
	katakanaButton.visible = true;
	languageButton.visible = true;
	backButton.visible = false;
	nextButton.visible = false;
	prevButton.visible = false;
	currentScoreText.visible = false;
	streakText.visible = false;
	questionCharText.visible = false;
	questionCharBg.visible = false;
	progressBar.visible = false;
	progressBarBg.visible = false;
	if (characterDisplay) {
		characterDisplay.visible = false;
	}
	for (var i = 0; i < answerButtons.length; i++) {
		answerButtons[i].visible = false;
	}
}
function startLearnMode() {
	gameState = 'learn';
	currentMode = hiraganaChars;
	currentCharIndex = 0;
	hideMenuElements();
	backButton.visible = true;
	nextButton.visible = true;
	prevButton.visible = true;
	showCurrentCharacter();
}
function startHiraganaTest() {
	gameState = 'hiraganaTest';
	currentMode = hiraganaChars;
	score = 0;
	streak = 0;
	questionsAnswered = 0;
	hideMenuElements();
	backButton.visible = true;
	currentScoreText.visible = true;
	streakText.visible = true;
	questionCharText.visible = true;
	questionCharBg.visible = true;
	progressBar.visible = true;
	progressBarBg.visible = true;
	updateScoreDisplay();
	generateQuestion();
}
function startKatakanaTest() {
	gameState = 'katakanaTest';
	currentMode = katakanaChars;
	score = 0;
	streak = 0;
	questionsAnswered = 0;
	hideMenuElements();
	backButton.visible = true;
	currentScoreText.visible = true;
	streakText.visible = true;
	questionCharText.visible = true;
	questionCharBg.visible = true;
	progressBar.visible = true;
	progressBarBg.visible = true;
	updateScoreDisplay();
	generateQuestion();
}
function returnToMenu() {
	gameState = 'menu';
	showMenuElements();
}
function showCurrentCharacter() {
	if (characterDisplay) {
		game.removeChild(characterDisplay);
	}
	var _char = currentMode[currentCharIndex];
	characterDisplay = game.addChild(new CharacterDisplay(_char["char"], _char.rom));
	characterDisplay.x = 1024;
	characterDisplay.y = 1000;
}
function showNextCharacter() {
	currentCharIndex = (currentCharIndex + 1) % currentMode.length;
	showCurrentCharacter();
}
function showPrevCharacter() {
	currentCharIndex = (currentCharIndex - 1 + currentMode.length) % currentMode.length;
	showCurrentCharacter();
}
function generateQuestion() {
	// Clear previous answer buttons
	for (var i = 0; i < answerButtons.length; i++) {
		game.removeChild(answerButtons[i]);
	}
	answerButtons = [];
	// Pick random character
	var randomIndex = Math.floor(Math.random() * currentMode.length);
	currentQuestion = currentMode[randomIndex];
	questionCharText.setText(currentQuestion["char"]);
	// Generate wrong answers
	var wrongAnswers = [];
	while (wrongAnswers.length < 3) {
		var wrongIndex = Math.floor(Math.random() * currentMode.length);
		var wrongAnswer = currentMode[wrongIndex].rom;
		if (wrongAnswer !== currentQuestion.rom && wrongAnswers.indexOf(wrongAnswer) === -1) {
			wrongAnswers.push(wrongAnswer);
		}
	}
	// Create answer options
	var allAnswers = [currentQuestion.rom].concat(wrongAnswers);
	// Shuffle answers
	for (var i = allAnswers.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = allAnswers[i];
		allAnswers[i] = allAnswers[j];
		allAnswers[j] = temp;
	}
	// Create answer buttons
	var buttonPositions = [{
		x: 512,
		y: 1000
	}, {
		x: 1536,
		y: 1000
	}, {
		x: 512,
		y: 1150
	}, {
		x: 1536,
		y: 1150
	}];
	for (var i = 0; i < 4; i++) {
		var isCorrect = allAnswers[i] === currentQuestion.rom;
		var button = game.addChild(new AnswerButton(allAnswers[i], isCorrect, onAnswerSelected));
		button.x = buttonPositions[i].x;
		button.y = buttonPositions[i].y;
		answerButtons.push(button);
	}
}
function onAnswerSelected(isCorrect) {
	questionsAnswered++;
	if (isCorrect) {
		score++;
		streak++;
		LK.getSound('correct').play();
		// Show correct feedback
		var feedback = game.addChild(LK.getAsset('correctFeedback', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 1024,
			y: 800,
			alpha: 0
		}));
		tween(feedback, {
			alpha: 1
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(feedback, {
					alpha: 0
				}, {
					duration: 300,
					onFinish: function onFinish() {
						game.removeChild(feedback);
					}
				});
			}
		});
	} else {
		streak = 0;
		LK.getSound('incorrect').play();
		// Show incorrect feedback
		var feedback = game.addChild(LK.getAsset('incorrectFeedback', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 1024,
			y: 800,
			alpha: 0
		}));
		tween(feedback, {
			alpha: 1
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(feedback, {
					alpha: 0
				}, {
					duration: 300,
					onFinish: function onFinish() {
						game.removeChild(feedback);
					}
				});
			}
		});
	}
	updateScoreDisplay();
	// Save best scores
	if (score > savedScore) {
		savedScore = score;
		storage.bestScore = savedScore;
		scoreText.setText(uiTexts[currentLanguage].bestScore + savedScore);
	}
	if (streak > savedStreak) {
		savedStreak = streak;
		storage.bestStreak = savedStreak;
	}
	// Generate next question after delay
	LK.setTimeout(function () {
		generateQuestion();
	}, 800);
}
function toggleLanguage() {
	currentLanguage = currentLanguage === 'en' ? 'ru' : 'en';
	storage.language = currentLanguage;
	updateAllTexts();
}
function updateAllTexts() {
	titleText.setText(uiTexts[currentLanguage].title);
	scoreText.setText(uiTexts[currentLanguage].bestScore + savedScore);
	currentScoreText.setText(uiTexts[currentLanguage].score + score);
	streakText.setText(uiTexts[currentLanguage].streak + streak);
	// Update button texts by recreating them
	game.removeChild(learnButton);
	game.removeChild(hiraganaButton);
	game.removeChild(katakanaButton);
	game.removeChild(languageButton);
	game.removeChild(backButton);
	game.removeChild(nextButton);
	game.removeChild(prevButton);
	learnButton = game.addChild(new MenuButton(uiTexts[currentLanguage].learnMode, function () {
		startLearnMode();
	}));
	learnButton.x = 1024;
	learnButton.y = 700;
	hiraganaButton = game.addChild(new MenuButton(uiTexts[currentLanguage].hiraganaTest, function () {
		startHiraganaTest();
	}));
	hiraganaButton.x = 1024;
	hiraganaButton.y = 850;
	katakanaButton = game.addChild(new MenuButton(uiTexts[currentLanguage].katakanaTest, function () {
		startKatakanaTest();
	}));
	katakanaButton.x = 1024;
	katakanaButton.y = 1000;
	languageButton = game.addChild(new MenuButton(uiTexts[currentLanguage].language + ': ' + (currentLanguage === 'en' ? 'English' : 'Русский'), function () {
		toggleLanguage();
	}));
	languageButton.x = 1024;
	languageButton.y = 1150;
	backButton = game.addChild(new MenuButton(uiTexts[currentLanguage].backToMenu, function () {
		returnToMenu();
	}));
	backButton.x = 1024;
	backButton.y = 2200;
	backButton.visible = false;
	nextButton = game.addChild(new MenuButton(uiTexts[currentLanguage].nextCharacter, function () {
		showNextCharacter();
	}));
	nextButton.x = 1024;
	nextButton.y = 1800;
	nextButton.visible = false;
	prevButton = game.addChild(new MenuButton(uiTexts[currentLanguage].prevCharacter, function () {
		showPrevCharacter();
	}));
	prevButton.x = 1024;
	prevButton.y = 1950;
	prevButton.visible = false;
	// Update visibility based on current state
	if (gameState === 'menu') {
		showMenuElements();
	} else {
		hideMenuElements();
		backButton.visible = true;
		if (gameState === 'learn') {
			nextButton.visible = true;
			prevButton.visible = true;
		} else {
			currentScoreText.visible = true;
			streakText.visible = true;
			questionCharText.visible = true;
			questionCharBg.visible = true;
			progressBar.visible = true;
			progressBarBg.visible = true;
		}
	}
}
function updateScoreDisplay() {
	currentScoreText.setText(uiTexts[currentLanguage].score + score);
	streakText.setText(uiTexts[currentLanguage].streak + streak);
	var progress = Math.min(questionsAnswered / 20, 1);
	tween(progressBar, {
		scaleX: progress
	}, {
		duration: 300
	});
}
// Game update loop
game.update = function () {
	// Game loop logic if needed
};