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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Memory Match Game</title>
    <style>
        :root {
            --card-width: 120px;
            --card-height: 150px;
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            min-height: 100vh;
            background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            display: flex;
            flex-direction: column;
            align-items: center;
            color: white;
        }

        .game-container {
            margin-top: 2rem;
            text-align: center;
        }

        .controls {
            margin: 1rem 0;
            display: flex;
            gap: 1rem;
            justify-content: center;
            align-items: center;
        }

        .btn {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 5px;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .stats {
            display: flex;
            gap: 2rem;
            margin: 1rem;
            font-size: 1.2rem;
        }

        .board {
            display: grid;
            gap: 10px;
            padding: 20px;
            perspective: 1000px;
        }

        .card {
            width: var(--card-width);
            height: var(--card-height);
            position: relative;
            transform-style: preserve-3d;
            transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            cursor: pointer;
        }

        .card.flipped {
            transform: rotateY(180deg);
        }

        .card.matched {
            transform: rotateY(180deg) scale(0.95);
            opacity: 0.8;
        }

        .card-face {
            position: absolute;
            width: 100%;
            height: 100%;
            backface-visibility: hidden;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }

        .card-front {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            transform: rotateY(180deg);
        }

        .card-back {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
        }

        .modal {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(0, 0, 0, 0.9);
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            display: none;
        }

        @keyframes match {
            0%, 100% { transform: rotateY(180deg) scale(1); }
            50% { transform: rotateY(180deg) scale(1.1); }
        }

        @keyframes mismatch {
            0%, 100% { transform: rotateY(180deg); }
            20%, 40%, 60%, 80% { transform: rotateY(180deg) translateX(-10px); }
            30%, 50%, 70%, 90% { transform: rotateY(180deg) translateX(10px); }
        }
    </style>
</head>
<body>
    <div class="game-container">
        <h1>Memory Match</h1>
        <div class="controls">
            <select id="difficulty" class="btn">
                <option value="8">Easy (4x4)</option>
                <option value="18">Medium (6x6)</option>
                <option value="32">Hard (8x8)</option>
            </select>
            <button class="btn" id="start">New Game</button>
        </div>
        <div class="stats">
            <div>Moves: <span id="moves">0</span></div>
            <div>Time: <span id="timer">0:00</span></div>
            <div>Score: <span id="score">0</span></div>
        </div>
        <div class="board" id="board"></div>
    </div>
    <div class="modal" id="win-modal">
        <h2>Congratulations!</h2>
        <p>You completed the game in <span id="final-time"></span></p>
        <p>Final Score: <span id="final-score"></span></p>
        <button class="btn" onclick="startGame()">Play Again</button>
    </div>

    <script>
        const audioContext = new (window.AudioContext || window.webkitAudioContext)();
        let gameState = {
            flippedCards: [],
            matches: 0,
            moves: 0,
            score: 0,
            timer: 0,
            gameStarted: false,
            timerInterval: null
        };

        const emojis = ['๐ŸŽฎ', '๐ŸŽฒ', '๐ŸŽฏ', '๐ŸŽจ', '๐ŸŽญ', '๐ŸŽช', '๐ŸŽซ', '๐ŸŽฌ', 
                       '๐ŸŽค', '๐ŸŽง', '๐ŸŽท', '๐ŸŽธ', '๐ŸŽน', '๐ŸŽบ', '๐ŸŽป', '๐Ÿฅ',
                       'โšฝ๏ธ', '๐Ÿ€', '๐Ÿˆ', 'โšพ๏ธ', '๐ŸŽพ', '๐Ÿ', '๐Ÿ‰', '๐ŸŽฑ',
                       '๐Ÿ“', '๐Ÿธ', '๐ŸฅŠ', '๐Ÿฅ‹', '๐ŸŽฃ', 'โ›ณ๏ธ', '๐Ÿน', '๐ŸŽฝ'];

        function createAudioBuffer(frequency, duration) {
            const sampleRate = audioContext.sampleRate;
            const buffer = audioContext.createBuffer(1, duration * sampleRate, sampleRate);
            const data = buffer.getChannelData(0);
            
            for (let i = 0; i < buffer.length; i++) {
                data[i] = Math.sin(2 * Math.PI * frequency * i / sampleRate) *
                         Math.exp(-5 * i / buffer.length);
            }
            
            return buffer;
        }

        const matchSound = createAudioBuffer(440, 0.1);
        const mismatchSound = createAudioBuffer(220, 0.1);

        function playSound(buffer) {
            const source = audioContext.createBufferSource();
            source.buffer = buffer;
            source.connect(audioContext.destination);
            source.start();
        }

        function createBoard() {
            const board = document.getElementById('board');
            const difficulty = parseInt(document.getElementById('difficulty').value);
            const pairs = difficulty;
            const size = Math.sqrt(pairs * 2);
            
            board.style.gridTemplateColumns = `repeat(${size}, var(--card-width))`;
            board.innerHTML = '';

            const selectedEmojis = emojis.slice(0, pairs);
            const cards = [...selectedEmojis, ...selectedEmojis]
                .sort(() => Math.random() - 0.5);

            cards.forEach((emoji, index) => {
                const card = document.createElement('div');
                card.className = 'card';
                card.dataset.value = emoji;
                card.dataset.index = index;
                card.innerHTML = `
                    <div class="card-face card-front">${emoji}</div>
                    <div class="card-face card-back">?</div>
                `;
                card.addEventListener('click', flipCard);
                board.appendChild(card);
            });
        }

        function flipCard() {
            if (!gameState.gameStarted) {
                startTimer();
                gameState.gameStarted = true;
            }

            const card = this;
            if (card.classList.contains('flipped') || 
                gameState.flippedCards.length >= 2) return;

            card.classList.add('flipped');
            gameState.flippedCards.push(card);

            if (gameState.flippedCards.length === 2) {
                gameState.moves++;
                document.getElementById('moves').textContent = gameState.moves;
                checkMatch();
            }
        }

        function checkMatch() {
            const [card1, card2] = gameState.flippedCards;
            const match = card1.dataset.value === card2.dataset.value;

            if (match) {
                playSound(matchSound);
                card1.classList.add('matched');
                card2.classList.add('matched');
                gameState.matches++;
                gameState.score += 100;
                card1.style.animation = card2.style.animation = 'match 0.5s ease';
                
                if (gameState.matches === parseInt(document.getElementById('difficulty').value)) {
                    endGame();
                }
            } else {
                playSound(mismatchSound);
                card1.style.animation = card2.style.animation = 'mismatch 0.5s ease';
                gameState.score = Math.max(0, gameState.score - 20);
                
                setTimeout(() => {
                    card1.classList.remove('flipped');
                    card2.classList.remove('flipped');
                }, 1000);
            }

            setTimeout(() => {
                card1.style.animation = card2.style.animation = '';
            }, 500);

            document.getElementById('score').textContent = gameState.score;
            gameState.flippedCards = [];
        }

        function startTimer() {
            gameState.timerInterval = setInterval(() => {
                gameState.timer++;
                const minutes = Math.floor(gameState.timer / 60);
                const seconds = gameState.timer % 60;
                document.getElementById('timer').textContent = 
                    `${minutes}:${seconds.toString().padStart(2, '0')}`;
            }, 1000);
        }

        function endGame() {
            clearInterval(gameState.timerInterval);
            const modal = document.getElementById('win-modal');
            document.getElementById('final-time').textContent = 
                document.getElementById('timer').textContent;
            document.getElementById('final-score').textContent = gameState.score;
            modal.style.display = 'block';
        }

        function startGame() {
            gameState = {
                flippedCards: [],
                matches: 0,
                moves: 0,
                score: 0,
                timer: 0,
                gameStarted: false,
                timerInterval: null
            };

            document.getElementById('moves').textContent = '0';
            document.getElementById('timer').textContent = '0:00';
            document.getElementById('score').textContent = '0';
            document.getElementById('win-modal').style.display = 'none';
            
            createBoard();
            clearInterval(gameState.timerInterval);
        }

        document.getElementById('start').addEventListener('click', startGame);
        document.getElementById('difficulty').addEventListener('change', startGame);

        // Initial game setup
        startGame();
    </script>
</body>
</html>