body {
    background-color: #111;
    color: #eee;
    font-family: 'Press Start 2P', cursive;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

#game-container {
    position: relative;
    width: 640px;
    /* 2x scale */
    height: 400px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    background-color: #000;
}

canvas {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
    background-color: #5D9E53;
    /* Jungle Green Background default */
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    pointer-events: none;
    padding: 10px;
    box-sizing: border-box;
}

.score-line {
    display: flex;
    justify-content: space-between;
    font-size: 16px;
    color: #D4AF37;
    /* Atari Gold */
    text-shadow: 2px 2px #000;
    margin-bottom: 5px;
}

#scanline {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%,
            rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    /* Scanline size */
    pointer-events: none;
    opacity: 0.6;
}

#controls-hint {
    margin-top: 20px;
    font-size: 12px;
    color: #888;
}

.back-button {
    margin-top: 20px;
    text-decoration: none;
    color: #fff;
    border: 2px solid #fff;
    padding: 10px 20px;
    font-size: 12px;
    transition: all 0.2s;
}

.back-button:hover {
    background-color: #fff;
    color: #000;
}