body {
    margin: 0;
    padding: 20px;
    font-family: Arial, sans-serif;
    background: #222;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

.game-container {
    text-align: center;
}

h1 {
    margin-bottom: 20px;
    color: #00ff00;
}

.game-area {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: flex-start;
}

#tetris {
    border: 2px solid #fff;
    background: #000;
}

.game-info {
    background: #333;
    padding: 20px;
    border-radius: 10px;
    min-width: 200px;
}

.score, .level, .lines {
    margin: 10px 0;
    font-size: 18px;
}

.controls {
    margin-top: 20px;
    text-align: left;
}

.controls h3 {
    margin-bottom: 10px;
    color: #00ff00;
}

.controls p {
    margin: 5px 0;
    font-size: 14px;
}

button {
    margin: 10px 5px;
    padding: 10px 20px;
    font-size: 16px;
    background: #00ff00;
    color: #000;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #00cc00;
}

button:disabled {
    background: #666;
    cursor: not-allowed;
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    body {
        padding: 10px;
        flex-direction: column;
    }
    
    .game-container {
        width: 100%;
        max-width: 100vw;
    }
    
    h1 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .game-area {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    #tetris {
        width: 250px;
        height: 500px;
    }
    
    .game-info {
        width: 250px;
        padding: 15px;
        order: -1;
    }
    
    .score, .level, .lines {
        font-size: 16px;
        margin: 8px 0;
    }
    
    .controls {
        margin-top: 15px;
    }
    
    .controls h3 {
        font-size: 16px;
    }
    
    .controls p {
        font-size: 12px;
        margin: 3px 0;
    }
    
    button {
        padding: 12px 16px;
        font-size: 14px;
        margin: 8px 3px;
        width: 120px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    h1 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    #tetris {
        width: 200px;
        height: 400px;
    }
    
    .game-info {
        width: 200px;
        padding: 10px;
    }
    
    .score, .level, .lines {
        font-size: 14px;
    }
    
    .controls h3 {
        font-size: 14px;
    }
    
    .controls p {
        font-size: 11px;
    }
    
    button {
        padding: 10px 12px;
        font-size: 12px;
        width: 100px;
    }
}