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

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #111;
}

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

#game-info {
    color: #fff;
    margin-bottom: 10px;
}

#score, #level, #lines {
    margin: 5px;
    font-size: 18px;
}

#game-canvas {
    border: 2px solid #fff;
    background-color: #000;
}

#game-over {
    color: #ff0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0,0,0,0.7);
    padding: 20px;
    border: 2px solid #ff0;
    border-radius: 10px;
}

#restart-btn {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #0f0;
    color: #000;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#restart-btn:hover {
    background-color: #0a0;
}

#touch-controls {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: rgba(0,0,0,0.5);
    padding: 10px;
    border-radius: 20px;
    display: none;
}

.touch-left,
.touch-up,
.touch-right,
.touch-down,
.touch-rotate {
    background: hsl(200, 100%, 50%);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    user-select: none;
    border: 2px solid white;
}
    background-color: #0a0;
}