:root{--gap: 10px}*{box-sizing:border-box}body{margin:2rem;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app{max-width:900px;margin:0 auto}nav{display:flex;gap:var(--gap);margin-bottom:1.2rem}button,input,select{font-size:14px;padding:8px 10px}table{width:100%;border-collapse:collapse}th,td{padding:8px;border-bottom:1px solid #ddd;text-align:left}.pager{display:flex;gap:var(--gap);align-items:center;margin-top:12px}.muted{color:#666;font-size:12px}.row{display:flex;gap:var(--gap);align-items:center;flex-wrap:wrap}.error{color:#dc143c}.success{color:#0a0}