body {
    margin: 0;
    overflow: hidden;
    background: #202020;
}

#webglCanvas {
    width: 100vw;
    height: 100vh;
    display: block;
}

#hud {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.65);
    color: white;
    font-family: Arial, sans-serif;
    border-radius: 6px;
    z-index: 10;
}

#stateText {
    margin-bottom: 8px;
    font-weight: bold;
}

#hud button {
    display: block;
    margin: 6px 0;
    width: 160px;
    padding: 6px;
    cursor: pointer;
}

#messageText {
    margin-top: 8px;
    color: #ffcc66;
}