*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f5f5f5;--surface:#fff;--primary:#4f46e5;--primary-hover:#4338ca;--text:#1e1e2e;--text-secondary:#6b7280;--border:#e5e7eb;--radius:8px;--shadow:0 1px 3px #0000001a}html,body{background:var(--bg);height:100%;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5}button{cursor:pointer;font:inherit;background:0 0;border:none}input,textarea,select{font:inherit;border:1px solid var(--border);border-radius:var(--radius);outline:none;width:100%;padding:8px 12px}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 2px #4f46e533}.btn{border-radius:var(--radius);align-items:center;gap:6px;padding:10px 20px;font-size:14px;font-weight:500;transition:background .15s,transform .1s;display:inline-flex}.btn:active{transform:scale(.97)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:#f9fafb}.btn-danger{color:#fff;background:#ef4444}.btn-danger:hover{background:#dc2626}