:root{--primary:#0b5cff;--primary2:#083b9a;--nav:#071b3a;--nav2:#0b2d5c;--bg:#f3f7fb;--card:#fff;--text:#162033;--muted:#65758b;--border:#dbe5f1;--success:#17a35b;--warning:#f59e0b;--danger:#ef4444;--shadow:0 18px 48px rgba(15,35,70,.10)}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:linear-gradient(135deg,#edf5ff 0%,#f8fbff 38%,#eef7f3 100%);color:var(--text)}a{text-decoration:none;color:inherit}.app{display:flex;min-height:100vh}.sidebar{width:284px;background:linear-gradient(180deg,var(--nav),var(--nav2));color:#fff;position:fixed;inset:0 auto 0 0;padding:18px 16px;display:flex;flex-direction:column;box-shadow:12px 0 30px rgba(6,24,55,.18);z-index:10}.brand{display:flex;gap:12px;align-items:center;padding:8px 8px 22px;border-bottom:1px solid 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