body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
    font-family: 'Courier New', Courier, monospace;
    color: #fff;
}

#renderCanvas {
    width: 100%;
    height: 100%;
    display: block;
    outline: none;
}

#ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    pointer-events: none;
    z-index: 10;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.5);
    border-bottom: 2px solid #0f0;
}

#score, #status span {
    font-size: 24px;
    font-weight: bold;
    color: #0f0;
    text-shadow: 0 0 5px #0f0;
}

#status span {
    margin-left: 20px;
}

#scanner-canvas {
    background: rgba(0, 20, 0, 0.8);
    border: 2px solid #0f0;
    box-shadow: 0 0 10px #0f0;
}