:root{--bg-color: #000000;--accent-color: #ff0000;--text-color: #ffffff;--board-bg: #1a1a1a}body{margin:0;padding:0;background-color:var(--bg-color);color:var(--text-color);font-family:Inter,sans-serif;overflow:hidden}#root{width:100vw;height:100vh;display:flex;flex-direction:column}.toolbar{position:absolute;top:1rem;left:50%;transform:translate(-50%);background-color:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:.5rem 1rem;border-radius:999px;display:flex;gap:1rem;align-items:center;z-index:100;border:1px solid rgba(255,255,255,.2)}.tool-btn{background:none;border:none;color:#fff;cursor:pointer;padding:.5rem;border-radius:50%;transition:background-color .2s;display:flex;align-items:center;justify-content:center}.tool-btn:hover,.tool-btn.active{background-color:var(--accent-color)}.slider-container{display:flex;align-items:center;gap:.5rem}input[type=range]{-webkit-appearance:none;width:100px;height:4px;background:#ffffff4d;border-radius:2px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;background:#fff;border-radius:50%;cursor:pointer}.action-btn{background-color:#fff;color:#000;border:none;padding:.5rem 1rem;border-radius:999px;cursor:pointer;font-weight:600;transition:transform .1s}.action-btn:active{transform:scale(.95)}.canvas-container-wrapper{width:100%;height:100%;display:flex;justify-content:center;align-items:center}