body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #000;
    font-family: 'Courier New', monospace;
    overflow: hidden;
    touch-action: none;
}

.game-container {
    text-align: center;
    padding: 20px;
    max-width: 900px;
    width: 100%;
}

h1 {
    color: #0f0;
    text-shadow: 0 0 10px #0f0;
    margin-bottom: 20px;
    font-size: 2rem;
    letter-spacing: 3px;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.stat {
    color: #0f0;
    font-size: 1.2rem;
    text-shadow: 0 0 5px #0f0;
}

.stat span {
    color: #0ff;
}

#gameCanvas {
    border: 2px solid #0f0;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.3);
    background: #000;
    display: block;
    margin: 0 auto;
    max-width: 100%;
}

.controls {
    margin-top: 15px;
}

#codeInput {
    width: 80%;
    max-width: 600px;
    padding: 12px;
    font-size: 1.2rem;
    font-family: 'Courier New', monospace;
    background: #000;
    border: 2px solid #0f0;
    color: #0f0;
    text-align: center;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
    text-shadow: 0 0 5px #0f0;
}

#codeInput:focus {
    outline: none;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

.instructions {
    margin-top: 15px;
    color: #0a0;
    font-size: 0.9rem;
}

.instructions p {
    margin: 5px 0;
}

.game-over {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.95);
    border: 3px solid #0f0;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.5);
    z-index: 1000;
}

.game-over.hidden {
    display: none;
}

.game-over h2 {
    color: #f00;
    text-shadow: 0 0 10px #f00;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.game-over p {
    color: #0f0;
    font-size: 1.4rem;
    margin-bottom: 20px;
}

#restartBtn {
    background: #000;
    border: 2px solid #0f0;
    color: #0f0;
    padding: 12px 30px;
    font-size: 1.1rem;
    font-family: 'Courier New', monospace;
    cursor: pointer;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
    transition: all 0.3s ease;
}

#restartBtn:hover {
    background: #0f0;
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.6);
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
        letter-spacing: 2px;
    }

    .stats {
        gap: 15px;
    }

    .stat {
        font-size: 1rem;
    }

    #codeInput {
        font-size: 1rem;
        padding: 10px;
    }

    .instructions {
        font-size: 0.8rem;
    }

    .game-over {
        padding: 30px 20px;
        width: 90%;
    }

    .game-over h2 {
        font-size: 1.4rem;
    }

    .game-over p {
        font-size: 1.1rem;
    }
}