:root{--bg: #0f1115;--panel: #171a21;--panel2: #1e222c;--line: #2a2f3a;--text: #e6e9ef;--muted: #9aa3b2;--accent: #4f8cff;--accent2: #2f6bdc;--good: #3ecf8e;--warn: #ffb454;--danger: #ff6b6b;--chip: #262b36}*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}button{font-family:inherit;cursor:pointer}.app{display:grid;--sidebar-w: 300px;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:auto auto 1fr;height:100vh}.app.sidebar-rail{--sidebar-w: 348px}.app.sidebar-rail.pane-closed{--sidebar-w: 48px}header{grid-column:1/3;grid-row:1;background:var(--panel);border-bottom:1px solid var(--line)}.centerbar{grid-column:2;grid-row:2;background:var(--panel);border-bottom:1px solid var(--line)}.toprow{display:flex;align-items:center;gap:6px;padding:0 12px;min-height:42px;flex-wrap:wrap}header 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