body {
    background-color: #111;
    color: white;
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.back-link {
    align-self: flex-start;
    margin-bottom: 0.5rem;
    text-decoration: none;
    color: #4caf50;
    font-weight: bold;
}

.game-info {
    width: 100%;
    display: flex;
    justify-content: space-between;
    font-size: 1.2rem;
    margin-bottom: 5px;
}

canvas {
    border: 2px solid #4caf50;
    background-color: black;
}

.controls {
    margin-top: 10px;
    color: #aaa;
}

.message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    padding: 2rem;
    border: 2px solid #4caf50;
    text-align: center;
    border-radius: 10px;
}

.message.hidden {
    display: none;
}

.message h2 {
    margin-top: 0;
    font-size: 2.5rem;
}

.message button {
    background: #4caf50;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 5px;
}

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