#columns-tool{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#0f172a;background:#fff;line-height:1.7;font-size:16px;color-scheme:light;--muted:#475569;--line:#cbd5e1;--blue:#1d4ed8}
#columns-tool *{box-sizing:border-box}
#columns-tool{width:min(1080px,calc(100% - 48px));margin:auto}
#columns-tool .note,#columns-tool .lead{color:var(--muted)}
#columns-tool{padding:38px 0}
#columns-tool h1{font-size:clamp(2rem,4vw,3rem);line-height:1.25;letter-spacing:-.025em;max-width:24ch;text-wrap:balance;margin:0 0 20px}
#columns-tool h2{font-size:1.4rem;margin:0 0 16px}
#columns-tool h3{font-size:1.05rem;margin:0 0 12px;overflow-wrap:anywhere}
#columns-tool p{max-width:72ch;overflow-wrap:anywhere}
#columns-tool p.lead{font-size:1.12rem}
#columns-tool .workspace{border-top:1px solid var(--line);padding:28px 0;margin-top:28px;min-width:0}
#columns-tool .controls{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:20px 0}
#columns-tool button,#columns-tool input[type=file]{font:inherit}
#columns-tool button{min-height:44px;padding:10px 16px;border:1px solid #94a3b8;border-radius:8px;background:#fff;color:#0f172a;cursor:pointer}
#columns-tool button:hover:not(:disabled){background:#f1f5f9}
#columns-tool button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
#columns-tool button.primary:hover:not(:disabled){background:#1e40af}
#columns-tool button:disabled,#columns-tool input:disabled{opacity:.55;cursor:not-allowed}
#columns-tool input[type=file]{max-width:100%;min-height:44px;display:block;margin:12px 0}
#columns-tool input::file-selector-button{min-height:44px;font:inherit;border:1px solid #94a3b8;border-radius:8px;background:#f8fafc;padding:8px 12px;margin-right:8px}
#columns-tool #status{font-weight:600;min-height:28px}
#columns-tool #status[data-error=true],#columns-tool #draft-error{color:#991b1b}
#columns-tool #draft-error:empty{display:none}
#columns-tool #sources{padding-left:24px}
#columns-tool #sources li{padding:8px 0;overflow-wrap:anywhere}
#columns-tool .field{display:grid;grid-template-columns:minmax(160px,1fr) minmax(140px,1.3fr) auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid #e2e8f0;min-width:0}
#columns-tool .field label{overflow-wrap:anywhere}
#columns-tool .keep{display:flex;align-items:center;gap:10px;min-height:44px}
#columns-tool .keep input{width:20px;height:20px;accent-color:var(--blue);flex-shrink:0}
#columns-tool .name{display:flex;flex-direction:column;min-width:0;color:var(--muted);font-size:14px}
#columns-tool .name input{min-width:0;width:100%;min-height:44px;font:inherit;font-size:16px;color:#0f172a;background:#fff;border:1px solid #94a3b8;border-radius:6px;padding:8px 10px;caret-color:var(--blue)}
#columns-tool .moves{display:flex;gap:8px;flex-wrap:wrap}
#columns-tool .import-label{font-weight:600;min-width:0}
#columns-tool .preview-file{margin:24px 0}
#columns-tool .tables{display:grid;grid-template-columns:1fr 1fr;gap:20px;min-width:0}
#columns-tool .tables>div{min-width:0}
#columns-tool .table-wrap{max-width:100%;max-height:340px;overflow:auto;border:1px solid var(--line);border-radius:8px;scrollbar-color:#94a3b8 #f8fafc}
#columns-tool .table-wrap table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
#columns-tool .table-wrap th,#columns-tool .table-wrap td{padding:10px 12px;min-width:120px;max-width:260px;white-space:pre-wrap;overflow-wrap:anywhere;text-align:left;vertical-align:top;border-bottom:1px solid #e2e8f0}
#columns-tool .table-wrap th{background:#f8fafc}
#columns-tool .notes{border-top:1px solid var(--line);padding-top:28px}
#columns-tool a{text-underline-offset:3px}
#columns-tool ::selection{background:#dbeafe;color:#0f172a}
#columns-tool :focus-visible{outline:3px solid #2563eb;outline-offset:3px}
#columns-tool button,#columns-tool input{transition:background-color .15s ease-out,border-color .15s ease-out}
@media(max-width:720px){#columns-tool{width:calc(100% - 32px)}
#columns-tool .field{grid-template-columns:1fr}
#columns-tool .moves{justify-content:flex-start}
#columns-tool .tables{grid-template-columns:1fr}
#columns-tool{padding:28px 0}
#columns-tool h1{font-size:2rem}
#columns-tool .controls{gap:10px}
}
@media(prefers-reduced-motion:reduce){#columns-tool button,#columns-tool input{transition:none}
}