body, html {
    margin: 0;
    padding: 0;
    background-color: #000022;
    color: #ffffff;
    font-family: 'Courier New', monospace;
    overflow-x: hidden;
}

header.game-header {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    gap: 20px;
}

.back-link {
    color: #00aaff;
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
}

.back-link:hover {
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff;
}

.game-title {
    font-size: 24px;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #0088ff;
    margin: 0;
}

#scoreBoard {
    text-align: center;
    font-size: 18px;
    padding: 8px;
    color: #00ffff;
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

#gameWrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 10px;
}

#gameContainer {
    position: relative;
    margin: 0 auto;
    border: 2px solid #00aaff;
    box-shadow: 0 0 15px rgba(0, 170, 255, 0.3), 0 0 30px rgba(0, 170, 255, 0.1);
}

#gameCanvas {
    display: block;
    width: 100%;
}

#message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #0088ff;
    display: none;
    text-align: center;
    font-family: 'Courier New', monospace;
    pointer-events: none;
}

footer {
    text-align: center;
    padding: 10px;
    color: #335;
    font-size: 12px;
}

.ad-container {
    text-align: center;
    padding: 5px 0;
}