:root{--bg: #0b101a;--panel: #131b2a;--panel-2: #182236;--border: #24314a;--text: #e2e8f0;--muted: #8a99b4;--accent: #7c9cff;--ok: #48bb78;--danger: #f56565;--warn: #f6ad55;font-family:Inter,Segoe UI,system-ui,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button{font:inherit;cursor:pointer}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:16px;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--panel)}.topbar h1{font-size:18px;margin:0}.connection{margin-left:auto;font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid currentColor}.connection.up{color:var(--ok)}.connection.down{color:var(--danger)}.layout{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 360px;grid-template-rows:minmax(0,1fr) 210px;grid-template-areas:"scene sidebar" "board 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