body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #000;
    color: #fff;
    overflow: hidden;
}

#game-container {
    position: relative;
    height: 100vh;
    width: 100vw;
}

#ui-panel {
    position: fixed;
    left: 0;
    top: 0;
    width: 300px;
    height: 100vh;
    padding: 20px;
    background-color: #222;
    border-right: 2px solid #444;
    overflow-y: auto;
    box-sizing: border-box;
    z-index: 10;
}

#game-canvas {
    position: fixed;
    left: 300px;
    top: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, #001122, #000011);
}

#game-canvas canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}