:root{
  --bg:#f4f1ec;--panel:#fffdf9;--ink:#28231f;--muted:#766e67;--line:#ded8d1;
  --accent:#3e5a4a;--accent2:#e8eee8;--danger:#9b3e3e;--shadow:0 12px 36px rgba(47,38,30,.06)
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
button,input,select,textarea{font:inherit}.shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{background:#25241f;color:#f6f2ec;padding:22px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.logo{display:flex;gap:12px;align-items:center;padding:5px 8px 24px}.logo>span,.brand-mark{display:grid;place-items:center;width:42px;height:42px;border:1px solid #8e948f;border-radius:13px;font-weight:800;letter-spacing:.06em}.logo b,.logo small{display:block}.logo small{color:#aaa59e;margin-top:3px}
nav{display:grid;gap:6px}nav button{background:transparent;border:0;color:#ccc6bf;padding:11px 12px;text-align:left;border-radius:10px;cursor:pointer}nav button:hover,nav button.active{background:#3a3932;color:white}
.sidebar-bottom{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding:12px 8px}.pill,.tag{font-size:12px;border-radius:999px;padding:6px 9px;background:var(--accent2);color:var(--accent)}.sidebar .pill{background:#343a36;color:#cbe0d0}.link-btn{border:0;background:transparent;color:#aaa59e;cursor:pointer}
.main{padding:28px;max-width:1500px;width:100%}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.topbar h2{margin:2px 0 0}.eyebrow{font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:700}
.page{display:none}.page.active{display:block}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow);margin-bottom:18px}
.hero{display:grid;grid-template-columns:1fr 180px;align-items:center;gap:28px;background:linear-gradient(135deg,#fffdf9,#eef1e9)}.hero h1{font-size:38px;line-height:1.06;max-width:720px;margin:14px 0}.hero p{max-width:750px;color:var(--muted)}.hero-metric{text-align:center;border-left:1px solid var(--line)}.hero-metric span{font-size:52px;font-weight:800;display:block}.hero-metric small{color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.metric{display:flex;flex-direction:column}.metric b{font-size:28px}.metric span{color:var(--muted)}
.section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.section-head h3{margin:0}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
label{display:grid;gap:6px;font-size:13px;color:var(--muted);margin-bottom:12px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:white;padding:10px 11px;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:#87988b;box-shadow:0 0 0 3px #e9eee9}
.btn{border:1px solid var(--line);background:white;color:var(--ink);padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:650}.btn:hover{transform:translateY(-1px)}.btn.primary{background:var(--accent);color:white;border-color:var(--accent)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger);min-height:1.2em}
.ai-output{white-space:pre-wrap;line-height:1.6;background:#f8f5ef;border:1px solid var(--line);padding:15px;border-radius:12px;min-height:160px;overflow:auto}.visual-box{display:grid;place-items:center;min-height:320px;background:#ebe7e0;border-radius:15px;margin:14px 0;overflow:hidden}.visual-box img{width:100%;max-height:520px;object-fit:contain}.visual-box div{color:var(--muted)}
.chat-card{min-height:75vh;display:grid;grid-template-rows:auto 1fr auto}.chat-log{display:flex;flex-direction:column;gap:12px;overflow:auto;padding:10px 0 20px}.msg{max-width:78%;padding:12px 14px;border-radius:14px;white-space:pre-wrap;line-height:1.5}.msg.ai{background:#eef1e9;border:1px solid #dfe6dc}.msg.user{background:#33332e;color:white;margin-left:auto}.chat-input{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:end}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:11px;border-bottom:1px solid var(--line);font-size:13px}th{color:var(--muted);font-weight:650}.status{display:inline-block;padding:4px 8px;border-radius:999px;background:#eee;font-size:11px}.status.Approved{background:#dcebdd;color:#31583b}
.costing-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;align-items:end}.summary-mini{padding:12px 16px;border:1px solid var(--line);border-radius:12px}.summary-mini small,.summary-mini b{display:block}.summary-mini b{font-size:22px;margin-top:4px}.cost-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}.cost-summary>div{padding:14px;border:1px solid var(--line);border-radius:12px}.cost-summary small,.cost-summary b{display:block}.cost-summary b{font-size:20px;margin-top:5px}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.check-grid label{display:flex;align-items:center;gap:9px;padding:10px;border:1px solid var(--line);border-radius:10px;color:var(--ink);margin:0}.check-grid input{width:auto}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.55}.login-body{display:grid;place-items:center;min-height:100vh;padding:22px;background:radial-gradient(circle at top left,#e8ede7,#f3f0ea 45%,#e9e2d8)}.login-card{width:min(430px,100%);background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}.login-card h1{margin:10px 0 4px}.login-card .btn{width:100%}.brand-mark{background:#2f4136;color:white;border:0;margin-bottom:22px}
@media(max-width:900px){.shell{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.sidebar nav{grid-template-columns:repeat(2,1fr)}.sidebar-bottom{display:none}.main{padding:16px}.grid-2,.metric-grid,.form-grid,.costing-controls,.cost-summary,.check-grid,.hero{grid-template-columns:1fr}.hero-metric{border-left:0;border-top:1px solid var(--line);padding-top:18px}.topbar{align-items:flex-end}.hero h1{font-size:30px}}
.btn.danger{border-color:#d8b7b7;color:#8a3131;background:#fff8f8}.switch-row{display:flex;align-items:center;gap:9px;color:var(--ink);padding:10px 0}.switch-row input{width:auto}.info-stack{display:grid;gap:14px}.info-stack>div{padding:14px;border:1px solid var(--line);border-radius:12px}.info-stack p{margin:6px 0 0;color:var(--muted);line-height:1.5}

/* v3 collection workflow */
.metric-grid-3{grid-template-columns:repeat(3,1fr)}
.compact-card{padding:14px 18px}.inline-label{grid-template-columns:180px minmax(220px,520px);align-items:center;margin:0}.inline-label select{margin:0}
.design-grid{align-items:start}.field-help,.credit-note{font-size:12px;color:var(--muted)}.credit-note{margin:12px 0 0}.choice-section{margin:18px 0}.choice-title{display:flex;justify-content:space-between;gap:14px;align-items:end;margin-bottom:10px}.choice-title span{font-size:12px;color:var(--muted)}
.choice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.choice-card,.style-card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px;text-align:left;cursor:pointer;color:var(--ink)}.choice-card.selected,.style-card.selected{border-color:var(--accent);box-shadow:0 0 0 2px #dfe9e1;background:#fbfdfb}.choice-card b,.choice-card small,.style-card b,.style-card small{display:block}.choice-card small,.style-card small{color:var(--muted);margin-top:5px;line-height:1.35}
.density-demo{height:54px;border-radius:9px;background:#f4efe7;display:flex;align-items:center;justify-content:center;gap:5px;margin-bottom:8px;overflow:hidden}.density-demo i{display:block;width:8px;height:8px;border-radius:50%;background:#647b69}.density-demo.medium{flex-wrap:wrap;padding:8px}.density-demo.heavy{flex-wrap:wrap;padding:7px;background:#ece4d9}.density-demo.heavy i{width:10px;height:10px}
.style-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.style-thumb{height:66px;border-radius:9px;display:block;margin-bottom:8px;background-color:#f3eee7}.style-thumb.botanical{background-image:radial-gradient(ellipse at 25% 35%,#6f806d 0 7%,transparent 8%),radial-gradient(ellipse at 52% 58%,#9b826f 0 6%,transparent 7%),radial-gradient(ellipse at 76% 28%,#738a75 0 5%,transparent 6%)}.style-thumb.mughal{background-image:radial-gradient(circle at 50% 72%,transparent 0 17%,#9a775e 18% 20%,transparent 21%),radial-gradient(ellipse at 50% 36%,#708273 0 9%,transparent 10%)}.style-thumb.paisley{background-image:radial-gradient(ellipse at 35% 50%,transparent 0 12%,#8a6f5c 13% 16%,transparent 17%),radial-gradient(ellipse at 67% 45%,transparent 0 10%,#647a69 11% 14%,transparent 15%)}.style-thumb.geometric{background-image:linear-gradient(45deg,transparent 45%,#718073 46% 50%,transparent 51%),linear-gradient(-45deg,transparent 45%,#a28b76 46% 50%,transparent 51%);background-size:24px 24px}.style-thumb.abstract{background-image:radial-gradient(circle at 20% 40%,#78887b 0 13%,transparent 14%),radial-gradient(circle at 65% 62%,#b39b83 0 18%,transparent 19%),linear-gradient(120deg,transparent 45%,#d9cec1 46% 55%,transparent 56%)}.style-thumb.folk{background-image:linear-gradient(90deg,transparent 0 15%,#8b6a56 16% 20%,transparent 21% 40%,#667b6d 41% 45%,transparent 46%),linear-gradient(0deg,transparent 0 35%,#c1ac90 36% 42%,transparent 43%)}
.custom-style{margin-top:10px}.brief-preview{border:1px dashed #bdb5ab;background:#faf7f2;border-radius:12px;padding:13px 15px;margin:14px 0}.brief-preview ul{margin:8px 0;padding-left:20px}.brief-preview small{color:var(--muted)}
.concept-panel{position:sticky;top:20px}.concept-cards{display:grid;gap:12px}.concept-card{border:1px solid var(--line);border-radius:14px;padding:14px;background:#fff}.concept-card.selected{border-color:var(--accent);box-shadow:0 0 0 2px #dfe9e1}.concept-top{display:flex;gap:10px;align-items:center}.concept-letter{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--accent2);color:var(--accent);font-weight:800}.concept-top h4{margin:2px 0}.concept-top small{color:var(--muted)}.concept-card p{font-size:13px;color:var(--muted);line-height:1.5}.concept-card ul{padding-left:18px;font-size:13px;line-height:1.5}.concept-meta{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}.concept-meta span{font-size:11px;padding:4px 7px;border-radius:999px;background:#f1eee9}.selected-concept-bar{display:flex;gap:7px;align-items:center;padding:10px 12px;background:#edf3ee;border-radius:10px;margin-top:12px}.empty-state{padding:18px;border:1px dashed var(--line);border-radius:12px;color:var(--muted);background:#fbf9f5}.empty-state b{color:var(--ink)}
.chat-reference{display:grid;grid-template-columns:minmax(240px,360px) 1fr;gap:16px;align-items:end}.revision-box{margin-top:12px;border:1px solid #b9c8bb;background:#eef4ef;border-radius:12px;padding:13px;display:flex;gap:14px;align-items:center;justify-content:space-between}.revision-box p{margin:4px 0;color:var(--muted)}
.collection-strip{display:flex;justify-content:space-between;gap:14px;padding:12px 14px;background:#f5f2ec;border-radius:12px;margin-bottom:14px}.collection-strip span{color:var(--muted)}
.vendor-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:14px}.vendor-tab{border:0;background:transparent;padding:10px 12px;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent}.vendor-tab.active{color:var(--ink);border-bottom-color:var(--accent);font-weight:700}.vendor-view{display:none}.vendor-view.active{display:block}.btn.small{padding:6px 9px;font-size:12px}
.status.Concepts-Generated,.status.Concept-Selected{background:#eee8d7;color:#665b3b}.status.Vendor-Ready{background:#dfe8f2;color:#38546f}
@media(max-width:1100px){.style-grid{grid-template-columns:repeat(2,1fr)}.concept-panel{position:static}.chat-reference{grid-template-columns:1fr}}
@media(max-width:900px){.metric-grid-3,.choice-grid,.style-grid{grid-template-columns:1fr}.inline-label{grid-template-columns:1fr}.collection-strip{display:grid}.concept-panel{position:static}}

/* v4 multi-design + production visual workflow */
.technique-options{border:1px solid var(--line);background:#faf8f4;border-radius:14px;padding:14px;margin:16px 0}.mini-head{margin-bottom:10px}.mini-head h4{margin:0}.help-box{padding:11px 12px;border-left:4px solid var(--accent);background:#edf3ee;border-radius:8px;font-size:12px;line-height:1.5}.help-box b{display:block;margin-bottom:3px}
.article-design-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-height:520px;overflow:auto;padding-right:3px}.article-card{border:1px solid var(--line);border-radius:12px;padding:11px;background:white}.article-card.selected{border-color:var(--accent);box-shadow:0 0 0 2px #dfe9e1}.article-card-head{display:flex;gap:9px;align-items:center}.article-card-head small{display:block;color:var(--muted);margin-top:2px}.article-no{display:grid;place-items:center;width:34px;height:34px;border-radius:8px;background:#f0ece5;font-weight:800;font-size:12px}.article-card p{font-size:12px;color:var(--muted);line-height:1.4}.article-tags{display:flex;gap:5px;flex-wrap:wrap;margin:7px 0}.article-tags span{font-size:10px;background:#f2efe9;border-radius:999px;padding:4px 6px}.selected-article-bar{display:flex;gap:7px;align-items:center;padding:9px 12px;background:#f7f0e5;border-radius:10px;margin-top:8px}
.chat-reference{grid-template-columns:minmax(220px,1fr) minmax(220px,1fr) 2fr}
.vendor-spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:12px}.vendor-visual-pack{display:grid;gap:20px;margin-top:18px}.vendor-article-pack{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff}.vendor-pack-title{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}.vendor-pack-title span{color:var(--muted);font-size:12px}.vendor-visual-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.visual-card{border:1px solid var(--line);border-radius:12px;padding:10px;background:#fbfaf7;min-height:180px}.visual-card.wide{grid-column:1/-1}.visual-card h5{margin:0 0 8px}.visual-card img{display:block;width:100%;max-height:520px;object-fit:contain;background:white;border-radius:8px}.visual-card small{display:block;color:var(--muted);margin-top:8px;line-height:1.4}.visual-missing{display:grid;place-items:center;min-height:180px;border:1px dashed var(--line);border-radius:8px;color:var(--muted);text-align:center;padding:18px}.article-production-notes{margin-top:10px;background:#f7f4ef;border-radius:10px;padding:10px;font-size:12px}.article-production-notes p{margin:5px 0}
@media(max-width:1100px){.article-design-grid{grid-template-columns:1fr}.chat-reference{grid-template-columns:1fr}.vendor-spec-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.vendor-visual-grid,.vendor-spec-grid{grid-template-columns:1fr}.visual-card.wide{grid-column:auto}.vendor-pack-title{display:block}.article-design-grid{max-height:none}}
/* v5 collection gallery + production pack */
.article-design-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-height:none;overflow:visible;align-items:stretch}
.article-gallery-card{display:flex;flex-direction:column;gap:8px}
.article-thumb{width:100%;aspect-ratio:4/5;border-radius:10px;overflow:hidden;background:#f3f0ea;border:1px solid var(--line)}
.article-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.article-thumb-empty{height:100%;display:grid;place-items:center;align-content:center;gap:6px;color:var(--muted);text-align:center}
.article-thumb-empty b{font-size:30px;color:#777064}.article-thumb-empty span{font-size:11px}
.collection-gallery-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:8px 0 12px;padding:10px;background:#faf7f1;border:1px solid var(--line);border-radius:10px}
.production-reference-hero{border:1px solid var(--line);border-radius:14px;padding:12px;background:#faf8f4;margin-bottom:12px}
.production-reference-hero h5{margin:0 0 10px}.production-sheet-img{display:block;width:100%;max-height:1100px;object-fit:contain;background:white;border-radius:8px}
.component-spec-table{margin-top:12px;border:1px solid var(--line);border-radius:12px;padding:12px;background:#fcfbf8}
.component-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:8px}
.component-grid span{display:block;border:1px solid var(--line);border-radius:9px;padding:8px;font-size:11px;line-height:1.35;background:white}
.component-grid small{display:block;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.04em;margin-bottom:4px}
@media(max-width:1100px){.article-design-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.component-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.article-design-grid{grid-template-columns:1fr}.component-grid{grid-template-columns:1fr}}

/* v6 high-resolution collection library + production roll planner */
.saved-collection-library{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.saved-collection-card{border:1px solid var(--line);border-radius:14px;padding:13px;background:#fcfbf8}
.saved-collection-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.saved-collection-head b,.saved-collection-head small{display:block}.saved-collection-head small{color:var(--muted);margin-top:4px}
.saved-thumb-strip{display:flex;gap:6px;overflow-x:auto;padding:10px 0;min-height:76px}
.saved-thumb-strip img,.saved-thumb-strip span{width:58px;height:72px;flex:0 0 auto;border-radius:7px;border:1px solid var(--line);background:#f2eee7;object-fit:cover}
.saved-thumb-strip span{display:grid;place-items:center;color:var(--muted);font-weight:800}.saved-thumb-strip em{color:var(--muted);font-size:12px}
.vendor-collection-overview{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;background:#f6f2ec;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin-bottom:14px}
.vendor-collection-overview>div:first-child b,.vendor-collection-overview>div:first-child span{display:block}.vendor-collection-overview>div:first-child span{color:var(--muted);margin-top:3px;font-size:12px}
.vendor-overview-metrics{display:flex;gap:8px}.vendor-overview-metrics span{background:white;border:1px solid var(--line);border-radius:9px;padding:7px 9px;font-size:11px}.vendor-overview-metrics b{font-size:15px}
.vendor-overview-thumbs{grid-column:1/-1;display:flex;gap:5px;overflow-x:auto}.vendor-overview-thumbs img,.vendor-overview-thumbs i{width:48px;height:58px;border-radius:6px;object-fit:cover;border:1px solid var(--line);background:white}.vendor-overview-thumbs i{display:grid;place-items:center;font-style:normal;color:var(--muted)}
.production-highlight-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:14px;margin-bottom:12px}
.production-highlight-card{border:2px solid var(--line);border-radius:15px;padding:12px;background:#fff}
.production-highlight-card.approved{border-color:#9fb5a4;background:#fbfdfb}.production-highlight-card.production{border-color:#b99a72;background:#fffdf8}
.production-highlight-label{font-size:11px;font-weight:800;letter-spacing:.07em;color:#5f584f;margin-bottom:9px}
.production-highlight-img{display:block;width:100%;max-height:1050px;object-fit:contain;background:#fff;border-radius:9px}
.roll-yield-banner{border-left:5px solid var(--accent);background:#eef4ef;border-radius:10px;padding:11px 13px;margin:12px 0;font-size:13px}
.roll-plan-card{border-width:2px;border-color:#b99a72;background:#fffdf8}.roll-plan-card img{max-height:1150px!important}
.component-grid.compact{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:1050px){.saved-collection-library,.production-highlight-grid{grid-template-columns:1fr}.vendor-collection-overview{grid-template-columns:1fr}.vendor-overview-metrics{flex-wrap:wrap}}
@media print{.production-highlight-grid{grid-template-columns:1fr 1.25fr}.production-highlight-img{max-height:800px}.roll-plan-card img{max-height:900px!important}}