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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #000;
    font-family: 'Arial', sans-serif;
}

.game-container {
    position: relative;
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

#gameCanvas {
    display: block;
    background: #000;
    border: 2px solid #fff;
    border-radius: 5px;
}

.game-info {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
}

.message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    min-width: 300px;
}

.message h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.message p {
    font-size: 24px;
    margin-bottom: 20px;
}

.message button {
    padding: 10px 30px;
    font-size: 18px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.message button:hover {
    background: #45a049;
}

.hidden {
    display: none;
}