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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>Snake Game</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background-color: #2c3e50;
            font-family: 'Arial', sans-serif;
            padding: 10px;
        }

.game-container {
            text-align: center;
            max-width: 100%;
        }

h1 {
            color: #9bbc0f;
            margin-bottom: 20px;
            font-size: 2.5em;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }

.score-board {
            background-color: #0f380f;
            color: #9bbc0f;
            padding: 10px 20px;
            margin-bottom: 10px;
            border-radius: 5px;
            font-size: 1.2em;
            font-weight: bold;
        }

canvas {
            background-color: #9bbc0f;
            border: 8px solid #0f380f;
            border-radius: 5px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
            max-width: 100%;
            height: auto;
        }

.mobile-controls {
            margin-top: 20px;
            display: grid;
            grid-template-columns: repeat(3, 80px);
            grid-template-rows: repeat(3, 80px);
            gap: 10px;
            justify-content: center;
        }

.control-btn {
            background-color: #0f380f;
            color: #9bbc0f;
            border: 3px solid #9bbc0f;
            border-radius: 10px;
            font-size: 2em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.1s;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
            display: flex;
            align-items: center;
            justify-content: center;
        }

.control-btn:active {
            background-color: #9bbc0f;
            color: #0f380f;
            transform: scale(0.95);
        }

.control-btn.up {
            grid-column: 2;
            grid-row: 1;
        }

.control-btn.left {
            grid-column: 1;
            grid-row: 2;
        }

.control-btn.center {
            grid-column: 2;
            grid-row: 2;
            background-color: #306230;
            border-color: #0f380f;
            font-size: 1em;
            cursor: default;
        }

.control-btn.right {
            grid-column: 3;
            grid-row: 2;
        }

.control-btn.down {
            grid-column: 2;
            grid-row: 3;
        }

.keyboard-controls {
            margin-top: 20px;
            color: #9bbc0f;
            font-size: 0.9em;
        }

.keyboard-controls p {
            margin: 5px 0;
        }

#gameOverScreen {
            position: absolute;
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            background-color: rgba(15, 56, 15, 0.9);
            color: #9bbc0f;
            border-radius: 10px;
            padding: 40px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 10;
        }

#gameOverScreen.show {
            display: flex;
        }

#gameOverScreen h2 {
            font-size: 3em;
            margin-bottom: 20px;
        }

#gameOverScreen p {
            font-size: 1.5em;
            margin: 10px 0;
        }

.restart-btn {
            background-color: #9bbc0f;
            color: #0f380f;
            border: none;
            padding: 15px 30px;
            font-size: 1.2em;
            font-weight: bold;
            border-radius: 5px;
            cursor: pointer;
            margin-top: 20px;
            transition: transform 0.2s;
        }

.restart-btn:hover {
            transform: scale(1.1);
        }

.restart-btn:active {
            transform: scale(0.95);
        }

@media (max-width: 600px) {
            h1 {
                font-size: 2em;
            }

canvas {
                width: 100%;
                height: auto;
            }

.mobile-controls {
                grid-template-columns: repeat(3, 70px);
                grid-template-rows: repeat(3, 70px);
            }

.control-btn {
                font-size: 1.5em;
            }

.keyboard-controls {
                font-size: 0.8em;
            }

#gameOverScreen {
                padding: 30px;
            }

#gameOverScreen h2 {
                font-size: 2em;
            }

#gameOverScreen p {
                font-size: 1.2em;
            }
        }
    </style>
</head>
<body>
    <div class="game-container">
        <h1>🐍 SNAKE</h1>
        <div class="score-board">
            Score: <span id="score">0</span>
        </div>
        <div style="position: relative;">
            <canvas id="gameCanvas" width="500" height="500"></canvas>
            <div id="gameOverScreen">
                <h2>GAME OVER!</h2>
                <p>Final Score: <span id="finalScore">0</span></p>
                <button class="restart-btn" onclick="restartGame()">PLAY AGAIN</button>
            </div>
        </div>
        
        
        <div class="mobile-controls">
            <button class="control-btn up" id="btnUp">▲</button>
            <button class="control-btn left" id="btnLeft">◄</button>
            <div class="control-btn center">🐍</div>
            <button class="control-btn right" id="btnRight">►</button>
            <button class="control-btn down" id="btnDown">▼</button>
        </div>

<div class="keyboard-controls">
            <p><strong>Desktop:</strong> Arrow Keys or WASD</p>
            <p><strong>Mobile:</strong> Use buttons above</p>
        </div>
    </div>

const TILE_SIZE = 20;
        const GRID_WIDTH = 25;
        const GRID_HEIGHT = 25;
        const GAME_SPEED = 100;

let snake = [];
        let food = {};
        let direction = 'RIGHT';
        let nextDirection = 'RIGHT';
        let running = false;
        let gameOver = false;
        let score = 0;
        let gameLoop = null;

function init() {
            canvas.width = GRID_WIDTH * TILE_SIZE;
            canvas.height = GRID_HEIGHT * TILE_SIZE;
            setupMobileControls();
            startGame();
        }

function setupMobileControls() {
            const btnUp = document.getElementById('btnUp');
            const btnDown = document.getElementById('btnDown');
            const btnLeft = document.getElementById('btnLeft');
            const btnRight = document.getElementById('btnRight');

// Prevent default touch behavior
            [btnUp, btnDown, btnLeft, btnRight].forEach(btn => {
                btn.addEventListener('touchstart', (e) => e.preventDefault());
            });

btnUp.addEventListener('click', () => {
                if (running && direction !== 'DOWN') nextDirection = 'UP';
            });

btnDown.addEventListener('click', () => {
                if (running && direction !== 'UP') nextDirection = 'DOWN';
            });

btnLeft.addEventListener('click', () => {
                if (running && direction !== 'RIGHT') nextDirection = 'LEFT';
            });

btnRight.addEventListener('click', () => {
                if (running && direction !== 'LEFT') nextDirection = 'RIGHT';
            });

// Touch support for better mobile experience
            btnUp.addEventListener('touchstart', (e) => {
                if (running && direction !== 'DOWN') nextDirection = 'UP';
            });

btnDown.addEventListener('touchstart', (e) => {
                if (running && direction !== 'UP') nextDirection = 'DOWN';
            });

btnLeft.addEventListener('touchstart', (e) => {
                if (running && direction !== 'RIGHT') nextDirection = 'LEFT';
            });

btnRight.addEventListener('touchstart', (e) => {
                if (running && direction !== 'LEFT') nextDirection = 'RIGHT';
            });
        }

function update() {
            if (!running) return;

direction = nextDirection;
            const head = { ...snake[0] };

switch (direction) {
                case 'UP': head.y--; break;
                case 'DOWN': head.y++; break;
                case 'LEFT': head.x--; break;
                case 'RIGHT': head.x++; break;
            }

// Check wall collision
            if (head.x < 0 || head.x >= GRID_WIDTH || 
                head.y < 0 || head.y >= GRID_HEIGHT) {
                endGame();
                return;
            }

// Check self collision
            if (snake.some(segment => segment.x === head.x && segment.y === head.y)) {
                endGame();
                return;
            }

snake.unshift(head);

// Check if food is eaten
            if (head.x === food.x && head.y === food.y) {
                score += 10;
                updateScore();
                spawnFood();
            } else {
                snake.pop();
            }

draw();
        }

function draw() {
            // Clear canvas
            ctx.fillStyle = '#9bbc0f';
            ctx.fillRect(0, 0, canvas.width, canvas.height);

// Draw food
            ctx.fillStyle = '#306230';
            ctx.fillRect(
                food.x * TILE_SIZE,
                food.y * TILE_SIZE,
                TILE_SIZE,
                TILE_SIZE
            );

// Draw snake
            snake.forEach((segment, index) => {
                ctx.fillStyle = index === 0 ? '#0f380f' : '#306230';
                ctx.fillRect(
                    segment.x * TILE_SIZE,
                    segment.y * TILE_SIZE,
                    TILE_SIZE,
                    TILE_SIZE
                );
            });
        }

function endGame() {
            running = false;
            gameOver = true;
            clearInterval(gameLoop);
            finalScoreElement.textContent = score;
            gameOverScreen.classList.add('show');
        }

function updateScore() {
            scoreElement.textContent = score;
        }

function restartGame() {
            startGame();
        }

// Keyboard controls
        document.addEventListener('keydown', (e) => {
            if (gameOver && e.code === 'Space') {
                restartGame();
                return;
            }

if (!running) return;

switch (e.key) {
                case 'ArrowUp':
                case 'w':
                case 'W':
                    if (direction !== 'DOWN') nextDirection = 'UP';
                    e.preventDefault();
                    break;
                case 'ArrowDown':
                case 's':
                case 'S':
                    if (direction !== 'UP') nextDirection = 'DOWN';
                    e.preventDefault();
                    break;
                case 'ArrowLeft':
                case 'a':
                case 'A':
                    if (direction !== 'RIGHT') nextDirection = 'LEFT';
                    e.preventDefault();
                    break;
                case 'ArrowRight':
                case 'd':
                case 'D':
                    if (direction !== 'LEFT') nextDirection = 'RIGHT';
                    e.preventDefault();
                    break;
            }
        });

// Start the game when page loads
        init();
    </script>
</body>
</html>

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