/* Base Reset */
body,
html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Full Screen Canvas */
#canvas {
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

/* Optional Overlay (Title/Instructions) */
.overlay {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 10;
    color: rgba(50, 50, 50, 0.5);
    pointer-events: none;
    font-size: 12px;
}