body {
    margin: 0;
    overflow: hidden;
}

canvas {
    display: block;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

#gui-container {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 10;
    padding: 8px 10px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

/* Shared label style */
#gui-container label {
    display: block;
    margin: 6px 0;
    font: 12px/1.2 system-ui, sans-serif;
    color: #ddd;
}

/* Shared select style */
#gui-container select {
    min-width: 180px;
    padding: 6px 8px;
    border-radius: 6px;
    border: 1px solid #444;
    background: #111;
    color: #eee;
    font: 12px/1.2 system-ui, sans-serif;
    outline: none;
    margin-bottom: 10px;
}
#gui-container select:focus {
    border-color: #888;
}