body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    touch-action: none;
}

#game-container {
    display: flex;
    gap: 20px;
}

#game-board, #next-piece {
    border: 2px solid #333;
    background-color: #fff;
}

#game-board {
    width: 300px;
    height: 600px;
    display: grid;
    grid-template-columns: repeat(10, 1fr);
}

#next-piece {
    width: 120px;
    height: 120px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.cell {
    border: 1px solid #ddd;
    box-sizing: border-box;
}

#info-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#score, #level, #lines {
    font-size: 20px;
}

#controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

button {
    font-size: 18px;
    padding: 10px 20px;
}

#high-scores {
    margin-top: 20px;
}

#mobile-controls {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
}

@media (max-width: 768px) {
    #game-container {
        flex-direction: column;
    }
    #mobile-controls {
        display: flex;
        gap: 10px;
    }
}