html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    background-color: #0a0a0a;
    color: #eee;
    font-family: 'Courier New', Courier, monospace;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

#game-container {
    position: relative;
    border: 2px solid #00f0ff;
    box-shadow: 0 0 20px #00f0ff;
}

canvas {
    display: block;
    background-color: #000;
}

#game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ff0055;
    text-shadow: 0 0 10px #ff0055;
}

#game-over h1 {
    margin: 0;
    font-size: 4em;
}

#game-over p {
    font-size: 1.5em;
}

.hidden {
    display: none;
}

#error-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ff0055;
    text-align: center;
    background: rgba(10, 10, 10, 0.9);
    padding: 30px;
    border-radius: 10px;
    border: 2px solid #ff0055;
    box-shadow: 0 0 20px #ff0055;
    max-width: 80%;
}

#error-container h1 {
    margin: 0 0 15px 0;
    font-size: 2.5em;
    text-shadow: 0 0 10px #ff0055;
}

#error-container p {
    font-size: 1.2em;
    margin: 0;
}