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

        body {
            font-family: 'Courier New', monospace;
            background: linear-gradient(180deg, #0a0e27 0%, #1a1a3e 50%, #0f0f23 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            overflow: hidden;
            color: #fff;
        }

        .game-container {
            position: relative;
            width: 100%;
            max-width: 800px;
            height: 600px;
            background: rgba(0, 0, 0, 0.3);
            border: 3px solid #4a9eff;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 0 50px rgba(74, 158, 255, 0.5);
        }

        #gameCanvas {
            width: 100%;
            height: 100%;
            display: block;
            background: radial-gradient(ellipse at center, rgba(20, 20, 60, 0.8) 0%, rgba(5, 5, 15, 0.9) 100%);
        }

        .hud {
            position: absolute;
            top: 20px;
            left: 20px;
            right: 20px;
            display: flex;
            justify-content: space-between;
            pointer-events: none;
            z-index: 10;
        }

        .score, .health, .level {
            background: rgba(0, 0, 0, 0.7);
            padding: 10px 20px;
            border-radius: 10px;
            border: 2px solid #4a9eff;
            font-size: 18px;
            font-weight: bold;
            color: #4a9eff;
            text-shadow: 0 0 10px rgba(74, 158, 255, 0.8);
        }

        .start-screen, .game-over-screen {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.9);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 20px;
            z-index: 100;
        }

        .game-over-screen {
            display: none;
        }

        h1 {
            font-size: 48px;
            color: #4a9eff;
            text-shadow: 0 0 20px rgba(74, 158, 255, 0.8);
            animation: pulse 2s infinite;
        }

        button {
            padding: 15px 40px;
            font-size: 20px;
            font-weight: bold;
            background: linear-gradient(135deg, #4a9eff 0%, #7b68ee 100%);
            border: none;
            border-radius: 50px;
            color: #fff;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 5px 20px rgba(74, 158, 255, 0.4);
        }

        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(74, 158, 255, 0.6);
        }

        .controls {
            color: #aaa;
            font-size: 14px;
            text-align: center;
        }

        .footer-text {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: #4a9eff;
    font-size: 14px;
    text-align: center;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 20px;
    border-radius: 10px;
    border: 1px solid rgba(74, 158, 255, 0.3);
    backdrop-filter: blur(10px);
}

.footer-text a {
    color: #7b68ee;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px rgba(123, 104, 238, 0.5);
}

.footer-text a:hover {
    color: #4a9eff;
    text-shadow: 0 0 15px rgba(74, 158, 255, 0.8);
}

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        @media (max-width: 768px) {
            .game-container {
                height: 500px;
            }
            h1 {
                font-size: 36px;
            }
            .score, .health, .level {
                font-size: 14px;
                padding: 8px 15px;
            }
        }