:root{--sidebar-width:240px;--bg:#0f1117;--bg-elevated:#161b26;--border:#2a3142;--text:#e8eaef;--text-muted:#9aa3b5;--accent:#3b82f6}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}