:root{--primary:#3b4cb8;--primary-hover:#2e3da0;--primary-light:#e8eaff;--primary-gradient:linear-gradient(135deg, #3b4cb8, #5b6bd6);--surface:#f0f2f8;--surface-hover:#e4e7f0;--bg:#fafbfe;--white:#fff;--text:#1a1d2b;--text-secondary:#5a5f7a;--text-muted:#9196b0;--border:#dfe2ed;--border-light:#eceef5;--success:#22a06b;--warning:#cf9f02;--danger:#e34935;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--shadow-sm:0 1px 3px #1a1d2b0f;--shadow-md:0 4px 12px #1a1d2b14;--shadow-lg:0 8px 24px #1a1d2b1a;--font-heading:"Plus Jakarta Sans", sans-serif;--font-body:"Inter", sans-serif;--font-mono:"JetBrains Mono", monospace;--sidebar-width:240px;--topbar-height:0px;--transition:.18s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:15px}body{font-family:var(--font-body);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.6}#app{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--white);border-right:1px 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