:root{--sidebar:#05070c;--accent:#6366f1;--accent-light:#1c1f36;--text:#e5e7eb;--muted:#8b93a7;--border:#242938;--bg:#0f1117;--panel:#171a23;--green:#34d399;--red:#f87171;--amber:#fbbf24}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:inherit}.shell{min-height:100vh;display:flex}.sidebar{background:var(--sidebar);color:#9aa2ba;border-right:1px solid var(--border);flex-shrink:0;width:220px;padding:20px 0}.logo{color:#fff;letter-spacing:.3px;padding:0 20px 24px;font-size:16px;font-weight:700}.nav a{color:#8a91a8;border-left:3px solid #0000;padding:10px 20px;font-size:14px;text-decoration:none;display:block}.nav a.active{color:#fff;border-left-color:var(--accent);background:#151a2b}.nav a:hover{color:#fff}.main{flex:1;min-width:0}.topbar{background:var(--panel);border-bottom:1px solid 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