body {
    margin: 0;
    padding: 0;
    background-color: #000;
    overflow: hidden;
}

#canvas-container {
    width: 100vw;
    height: 100vh;
    display: block;
}

/* 画面左下の簡易ミニマップ */
#minimap {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.3);
    z-index: 10;
}