body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #000; /* Fundo preto puro para não projetar luz onde não deve */
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
}

#ui {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 10;
    pointer-events: none; /* Deixa os cliques passarem direto pro canvas da física */
    background: rgba(0, 0, 0, 0.6);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}

h1 {
    margin-top: 0;
    font-size: 1.5rem;
    color: #fff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

p {
    margin: 8px 0;
    font-size: 1rem;
    color: #ccc;
}

#game-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#game-container canvas {
    display: block;
}