body {
    background-color: #222;
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

#game-container {
    position: relative;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    border: 4px solid #444;
    border-radius: 4px;
    background-color: #1a1a1a;
}

canvas {
    display: block;
    cursor: crosshair;
    background: radial-gradient(circle at center, #333 0%, #000 100%);
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Let clicks pass through to canvas */
}

#score-board {
    display: flex;
    justify-content: space-between;
    padding: 10px 20px;
    font-size: 18px;
    font-weight: bold;
    text-shadow: 1px 1px 2px black;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8), rgba(0,0,0,0));
}

#score-board span span {
    color: #ffcc00;
}