:root{font-family:system-ui,Arial,sans-serif}body{margin:0;background:#111;color:#eee}.app{display:grid;grid-template-columns:320px 1fr;height:100vh}.sidebar{padding:12px;border-right:1px solid #333;background:#161616;overflow:auto}.main{display:grid;place-items:center}canvas{background:#000;border:1px solid #333}button{margin-right:8px}.small{color:#bbb;font-size:12px;line-height:1.4}.row{margin:8px 0;display:flex;gap:8px;flex-wrap:wrap}.pill{padding:4px 8px;border:1px solid #444;border-radius:999px;font-size:12px}