:root{--bg:#0d1117;--bg-card:#161b22;--bg-input:#0d1117;--border:#30363d;--text:#e6edf3;--text-muted:#8b949e;--primary:#58a6ff;--primary-hover:#79c0ff;--success:#3fb950;--danger:#f85149;--warning:#d29922}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer}button,input,select{font-family:inherit}