body {
            background-color: black;
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            margin: 0;
            font-family: Tahoma, Verdana, Arial, sans-serif;
            touch-action: none;
        }

        h1 {
            margin: 10px 0;
            font-size: 2em;
        }

        #game-container {
            position: relative;
            box-shadow: 0 0 20px rgba(0, 255, 0, 0.2);
        }

        canvas {
            border: 2px solid #555;
            background-color: #111;
            display: block;
            max-width: 95vw;
            max-height: 70vh;
            width: auto;
            height: auto;
        }

        #score {
            font-size: 24px;
            margin-bottom: 10px;
        }

        a {
            color: #ddd;
            margin-top: 20px;
            text-decoration: none;
            padding: 10px;
            display: inline-block;
        }
        a:hover {
            text-decoration: underline;
        }

        #game-over {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.85);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            display: none;
        }

        #game-over h2 {
            font-size: 3em;
            color: #ff4444;
            margin: 0 0 20px 0;
            text-transform: uppercase;
        }

        #final-score {
            font-size: 1.5em;
            margin-bottom: 30px;
        }

        button {
            padding: 15px 30px;
            font-size: 1.2em;
            cursor: pointer;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #45a049;
        }

        .mobile-controls-hint {
            margin-top: 10px;
            color: #888;
            font-size: 0.9em;
        }