@media (max-width: 480px) {
    .game-container {
        padding: 10px;
    }

    .board {
        width: 100%;
        height: calc(100vw * 10/9);
    }

    .controls {
        gap: 8px;
    }

    button {
        padding: 8px 16px;
        font-size: 14px;
    }
}