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

body {
    background-color: #2c3e50;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#game-container {
    width: 100%;
    max-width: 600px; /* Mobile size limit */
    height: 100%;
    max-height: 900px;
    background-color: #ecf0f1;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
}