body {
    margin: 0;
    overflow: hidden;
    background: #111;
    touch-action: none;
}
canvas {
    display: block;
    cursor: grab;
    width: 100vw;
    height: 100vh;
}
canvas:active {
    cursor: grabbing;
}
#info {
    position: absolute;
    bottom: 20px;
    left: 20px;
    color: rgba(255, 255, 255, 0.7);
    font-family: monospace;
    font-size: 14px;
    pointer-events: none;
    user-select: none;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.9);
    z-index: 10;
}
#info span {
    background: rgba(0, 0, 0, 0.5);
    padding: 4px 10px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
}

/* Palette Toggle Button */
.palette-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 20;
    background: rgba(0, 0, 0, 0.7);
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-family: monospace;
    font-size: 13px;
    backdrop-filter: blur(8px);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
    user-select: none;
}
.palette-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}
.palette-btn:active {
    transform: scale(0.96);
}