*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--primary:#4f46e5;--primary-hover:#4338ca;--danger:#ef4444;--danger-hover:#dc2626;--success:#22c55e;--bg:#f8fafc;--surface:#fff;--surface-hover:#f1f5f9;--border:#e2e8f0;--text:#1e293b;--text-muted:#64748b;--text-light:#94a3b8;--shadow-sm:0 1px 3px rgba(0,0,0,.08);--shadow-md:0 4px 12px rgba(0,0,0,.1);--shadow-lg:0 8px 24px rgba(0,0,0,.12);--radius:10px;--radius-sm:6px;--sidebar-width:280px}body,html{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--bg);color:var(--text);font-size:15px;line-height:1.6}button{cursor:pointer;transition:background .15s,color .15s,box-shadow .15s,transform .1s}button,input,textarea{border:none;outline:none;font-family:inherit;font-size:inherit}textarea{resize:none}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background-color:var(--border);border-radius:3px}