:root{--ink:#17222d;--muted:#607080;--line:#d9e1e8;--paper:#fff;--bg:#f3f6f8;--orange:#f96302;--orange-dark:#bb4800;--green:#137a53;--red:#b42318;--blue:#155eef;--shadow:0 12px 28px rgba(17,36,52,.08)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.topbar{padding:32px max(24px,calc((100vw - 1100px)/2));background:#17222d;color:#fff}
.eyebrow,.kicker{margin:0 0 5px;color:#a7b6c4;font-size:11px;font-weight:800;letter-spacing:.14em}
.topbar h1{margin:0;font-size:28px;letter-spacing:-.02em;overflow-wrap:break-word}
.subtitle{margin:7px 0 0;color:#c9d3dc;max-width:900px;overflow-wrap:break-word}
.shell{max-width:1100px;margin:24px auto;padding:0 24px}
/* --- stepper: three equal columns, one row, no overlap --- */
.stepper{list-style:none;margin:0 0 18px;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.stepper li{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--paper);border:1px solid var(--line);border-radius:10px;color:var(--muted);cursor:default}
.stepper li.current{border-color:var(--orange);color:var(--ink);box-shadow:var(--shadow)}
.stepper li.done{color:var(--green);cursor:pointer}
.step-num{flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:#edf2f6;color:var(--muted);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}
.stepper li.current .step-num{background:var(--orange);color:#fff}
.stepper li.done .step-num{background:#e6f6ee;color:var(--green)}
.step-label{font-weight:700;line-height:1.3;min-width:0;overflow-wrap:break-word}
.step-label small{font-weight:500;color:var(--muted)}
/* --- panels --- */
.panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:22px 24px}
.panel-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}
.panel-heading h2{margin:0;font-size:21px;overflow-wrap:break-word}
.muted{color:var(--muted);font-size:13px}
.hint-line{color:var(--muted);font-size:13px;margin:14px 0 0}
/* --- category cards: four equal columns --- */
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:16px}
.card{display:flex;flex-direction:column;gap:4px;align-items:flex-start;text-align:left;padding:16px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;font:inherit;color:var(--ink);min-height:118px}
.card:hover{border-color:var(--orange)}
.card.selected{border-color:var(--orange);background:#fff8f2;box-shadow:0 0 0 1px var(--orange)}
.card strong{font-size:16px;overflow-wrap:break-word}
.card-en{color:var(--muted);font-size:12px;overflow-wrap:break-word}
.card small{color:var(--muted);font-size:12px;line-height:1.45;overflow-wrap:break-word}
/* --- dropzone --- */
.dropzone{margin-top:16px;padding:44px 20px;border:2px dashed #c7d2db;border-radius:12px;text-align:center;cursor:pointer;background:#fbfcfd}
.dropzone:hover,.dropzone.drag{border-color:var(--orange);background:#fff8f2}
.dropzone-title{margin:0;font-size:16px;font-weight:700;overflow-wrap:break-word}
.dropzone-sub{margin:6px 0 0;color:var(--muted);font-size:13px;overflow-wrap:break-word}
.dropzone-file{margin:12px 0 0;color:var(--green);font-weight:700;overflow-wrap:break-word}
.status-line{margin:12px 0 0;font-size:13px;color:var(--muted);overflow-wrap:break-word}
.status-line.error{color:var(--red);font-weight:700}
.status-line.success{color:var(--green);font-weight:700}
/* --- report: three equal columns --- */
.report-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px;align-items:start}
.report-col{border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#fff;min-height:220px}
.report-col h3{margin:0 0 10px;font-size:15px}
.report-col h3 span{color:var(--muted);font-size:12px;font-weight:500}
.report-read{border-top:3px solid var(--green)}
.report-assumptions{border-top:3px solid var(--orange)}
.report-missing{border-top:3px solid var(--red)}
.report-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.report-list li{display:grid;gap:2px;font-size:13px;line-height:1.45;word-break:break-word;min-width:0}
.report-list li strong{font-size:13px;overflow-wrap:break-word}
.report-list li span{color:#3b4a57;overflow-wrap:break-word}
.report-list li em{color:var(--muted);font-style:normal;font-size:12px}
.report-list li em.biz{color:var(--red);font-weight:700}
.report-list li.empty{color:var(--muted)}
.col-note{color:var(--muted);font-size:12px;margin:10px 0 0}
.validation-notes{margin-top:16px;border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#fff8df}
.validation-notes h3{margin:0 0 10px;font-size:15px}
.validation-notes h3 span{color:var(--muted);font-size:12px;font-weight:500}
.validation-notes .report-list li{font-size:13px}
/* --- copy processing notes: same box as validation notes --- */
.copy-notes{margin-top:16px;border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#eef4ff}
.copy-notes h3{margin:0 0 10px;font-size:15px}
.copy-notes h3 span{color:var(--muted);font-size:12px;font-weight:500}
.copy-notes .report-list li{font-size:13px}
/* --- optional LLM polish settings: label + input rows, aligned --- */
.llm-settings{margin-top:16px;border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#fbfcfd}
.llm-settings summary{font-size:14px;font-weight:700;cursor:pointer}
.llm-settings .muted{margin:8px 0 0}
.form-row{display:grid;grid-template-columns:180px minmax(0,1fr);gap:12px;align-items:center;margin-top:10px}
.form-row label{font-size:13px;font-weight:600;overflow-wrap:break-word}
.form-row input[type="text"],.form-row input[type="password"]{width:100%;min-width:0;padding:9px 10px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:13px;background:#fff}
.form-row input[type="checkbox"]{width:18px;height:18px;justify-self:start;margin:0}
/* --- download --- */
.download-block{margin-top:20px;border-top:1px solid var(--line);padding-top:20px;text-align:center}
.button{border:0;border-radius:8px;padding:10px 14px;font:inherit;font-weight:700;cursor:pointer}
.button:disabled{opacity:.45;cursor:not-allowed}
.button-small{padding:7px 10px}
.button-primary{background:var(--orange);color:#fff}
.button-primary:hover{background:var(--orange-dark)}
.button-secondary{background:#edf2f6;color:var(--ink)}
.button-big{width:100%;padding:16px 20px;font-size:17px}
.download-name{margin:10px 0 0;color:var(--muted);font-size:13px;overflow-wrap:break-word}
.gate-note{color:var(--muted);font-size:12px;margin:10px 0 0;overflow-wrap:break-word}
.restart-line{margin:16px 0 0;text-align:center}
.link-button{border:0;background:none;color:var(--blue);font:inherit;font-size:13px;cursor:pointer;text-decoration:underline}
footer{text-align:center;padding:24px;color:var(--muted);font-size:12px}
@media (max-width:900px){
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .report-grid{grid-template-columns:1fr}
  .stepper{grid-template-columns:1fr}
}
@media (max-width:600px){
  .shell{padding:0 12px}
  .topbar{padding:22px 16px}
  .topbar h1{font-size:23px}
  .cards{grid-template-columns:1fr}
  .panel{padding:18px 15px}
  .form-row{grid-template-columns:1fr;gap:4px}
}

/* --- operator abbreviation (step 1, SKU generation) --- */
.operator-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px}
.operator-row label{font-size:13px;font-weight:700}
.operator-row label span{color:var(--muted);font-size:12px;font-weight:500}
.operator-row input{width:110px;padding:7px 10px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:14px;text-transform:uppercase}
.operator-row small{color:var(--muted);font-size:12px}
/* --- output score (step 3) --- */
.score-block{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:12px 0 0;padding:12px 14px;border:1px solid var(--line);border-left:3px solid var(--orange);border-radius:10px;background:#fff;font-size:14px}
.score-block strong{font-size:18px}
.score-block span{color:var(--muted)}
.score-block em{color:var(--muted);font-style:normal;font-size:12px}
/* --- per-item ops instruction under each missing item --- */
.report-list li em.ops{color:#8a5a00;font-style:normal}
/* --- UPC allocation record (step 3) --- */
.allocations{margin-top:16px;border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#fff}
.allocations h3{margin:0 0 10px;font-size:15px}
.allocations h3 span{color:var(--muted);font-size:12px;font-weight:500}

/* --- allocation ledger download (step 3) --- */
.download-ledger-line{margin:10px 0 0}
.download-ledger-line .button:disabled{opacity:.45;cursor:not-allowed}