body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #1e90d6 0%, #3bb3e0 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Arial, sans-serif;
}
#game-container {
    box-shadow: 0 4px 32px rgba(0,0,0,0.2);
    border-radius: 16px;
    overflow: hidden;
}