body {
    margin: 0;
    overflow: hidden;
    background-color: #000;
    font-family: 'Courier New', Courier, monospace;
    color: #fff;
    user-select: none;
}

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

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    /* Let clicks pass through to canvas if needed, but start screen needs clicks */
}

#start-screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: auto;
    cursor: pointer;
}

h1 {
    font-size: 4rem;
    text-shadow: 2px 2px #ff0000;
    margin-bottom: 0.5rem;
}

.controls {
    font-size: 0.8rem;
    opacity: 0.7;
}

#hud {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-size: 1.2rem;
}