<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Space Arcade</title>
    <style>
        :root {
            --primary: #6d28d9;
            --secondary: #4c1d95;
            --accent: #7c3aed;
            --background: #0f172a;
            --text: #e2e8f0;
        }

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

        body {
            background: var(--background);
            color: var(--text);
            font-family: 'Segoe UI', system-ui, sans-serif;
            min-height: 100vh;
            overflow-x: hidden;
        }

        .stars {
            position: fixed;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
            position: relative;
            z-index: 1;
        }

        .header {
            text-align: center;
            margin-bottom: 2rem;
            animation: glow 2s ease-in-out infinite alternate;
        }

        @keyframes glow {
            from {
                text-shadow: 0 0 10px #fff, 0 0 20px var(--accent), 0 0 30px var(--primary);
            }
            to {
                text-shadow: 0 0 20px #fff, 0 0 30px var(--accent), 0 0 40px var(--primary);
            }
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .game-card {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            padding: 1.5rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: transform 0.3s ease;
        }

        .game-card:hover {
            transform: translateY(-5px);
        }

        .game-canvas {
            width: 100%;
            height: 200px;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 0.5rem;
            margin-bottom: 1rem;
        }

        .button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 0.5rem;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .button:hover {
            background: var(--accent);
        }

        .score-panel {
            position: fixed;
            top: 1rem;
            right: 1rem;
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 0.5rem;
            backdrop-filter: blur(10px);
        }

        #particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            pointer-events: none;
        }

        .achievements {
            position: fixed;
            bottom: 1rem;
            left: 1rem;
            max-width: 300px;
        }

        .achievement {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 0.5rem;
            margin-bottom: 0.5rem;
            backdrop-filter: blur(10px);
            animation: slideIn 0.5s ease-out;
        }

        @keyframes slideIn {
            from {
                transform: translateX(-100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }
    </style>
</head>
<body>
    <canvas id="particles"></canvas>
    <div class="stars"></div>
    
    <div class="container">
        <header class="header">
            <h1>Space Arcade</h1>
            <p>Your Cosmic Gaming Adventure</p>
        </header>

        <div class="game-grid">
            <div class="game-card">
                <canvas class="game-canvas" id="asteroids"></canvas>
                <h2>Asteroids</h2>
                <p>Destroy space rocks and survive!</p>
                <button class="button" onclick="startAsteroids()">Play</button>
            </div>

            <div class="game-card">
                <canvas class="game-canvas" id="spaceship"></canvas>
                <h2>Space Runner</h2>
                <p>Navigate through cosmic obstacles!</p>
                <button class="button" onclick="startSpaceRunner()">Play</button>
            </div>

            <div class="game-card">
                <canvas class="game-canvas" id="puzzle"></canvas>
                <h2>Star Puzzle</h2>
                <p>Match constellations to score!</p>
                <button class="button" onclick="startPuzzle()">Play</button>
            </div>
        </div>
    </div>

    <div class="score-panel">
        <h3>High Scores</h3>
        <div id="scores"></div>
    </div>

    <div class="achievements" id="achievements"></div>

    <script>
        // Particle Background
        const canvas = document.getElementById('particles');
        const ctx = canvas.getContext('2d');
        
        canvas.width = window.innerWidth;
        canvas.height = window.innerHeight;

        const particles = [];
        
        class Particle {
            constructor() {
                this.x = Math.random() * canvas.width;
                this.y = Math.random() * canvas.height;
                this.size = Math.random() * 2;
                this.speedX = Math.random() * 3 - 1.5;
                this.speedY = Math.random() * 3 - 1.5;
            }

            update() {
                this.x += this.speedX;
                this.y += this.speedY;

                if (this.x > canvas.width) this.x = 0;
                if (this.x < 0) this.x = canvas.width;
                if (this.y > canvas.height) this.y = 0;
                if (this.y < 0) this.y = canvas.height;
            }

            draw() {
                ctx.fillStyle = 'rgba(255, 255, 255, 0.8)';
                ctx.beginPath();
                ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
                ctx.fill();
            }
        }

        function initParticles() {
            for (let i = 0; i < 100; i++) {
                particles.push(new Particle());
            }
        }

        function animateParticles() {
            ctx.clearRect(0, 0, canvas.width, canvas.height);
            
            for (const particle of particles) {
                particle.update();
                particle.draw();
            }
            
            requestAnimationFrame(animateParticles);
        }

        initParticles();
        animateParticles();

        // Achievement System
        const achievements = [
            { id: 'first_play', title: 'First Steps', description: 'Play your first game' },
            { id: 'high_score', title: 'High Achiever', description: 'Beat the high score' },
            { id: 'master', title: 'Space Master', description: 'Play all games' }
        ];

        function unlockAchievement(id) {
            const achievement = achievements.find(a => a.id === id);
            if (!achievement) return;

            const achievementElement = document.createElement('div');
            achievementElement.className = 'achievement';
            achievementElement.innerHTML = `
                <h4>${achievement.title}</h4>
                <p>${achievement.description}</p>
            `;

            document.getElementById('achievements').appendChild(achievementElement);
            
            setTimeout(() => {
                achievementElement.remove();
            }, 5000);
        }

        // Game Starters
        function startAsteroids() {
            unlockAchievement('first_play');
            // Asteroids game implementation
        }

        function startSpaceRunner() {
            // Space Runner game implementation
        }

        function startPuzzle() {
            // Puzzle game implementation
        }

        // Window Resize Handler
        window.addEventListener('resize', () => {
            canvas.width = window.innerWidth;
            canvas.height = window.innerHeight;
        });
    </script>
</body>
</html>