* {
    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: #f0f0f0;
}

.game-container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 20px;
}

.game-info {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

#gameCanvas {
    border: 2px solid #333;
    border-radius: 5px;
    background-color: #fff;
}

#startBtn {
    padding: 8px 16px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#startBtn:hover {
    background-color: #45a049;
}

.controls {
    margin-top: 20px;
    color: #666;
}

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

#virtualControls {
    display: none;
    margin-top: 20px;
    text-align: center;
}

.control-row {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 5px 0;
}

#virtualControls button {
    width: 50px;
    height: 50px;
    font-size: 24px;
    border: 2px solid #4CAF50;
    background-color: white;
    border-radius: 10px;
    color: #4CAF50;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}

#virtualControls button:active {
    background-color: #4CAF50;
    color: white;
}

/* 在移动设备上显示虚拟控制器 */
@media (max-width: 768px) {
    #virtualControls {
        display: block;
    }
}

@media (max-width: 500px) {
    .game-container {
        padding: 10px;
        width: 100%;
        margin: 0 10px;
    }

    #gameCanvas {
        width: 100%;
        height: auto;
    }
}