:root{--bg:#f4f5f7;--panel:#fff;--ink:#17202a;--muted:#667085;--line:#d7dce3;--blue:#2563eb;--blue-dark:#1d4ed8;--green:#138a50;--orange:#c76a1d;--red-bg:#fff0f0;--red:#b42318}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif}button,select,input{font:inherit}.shell{min-height:100vh;padding:18px}.topbar{justify-content:space-between;align-items:center;gap:16px;max-width:1480px;margin:0 auto 14px;display:flex}h1,h2,p{margin:0}h1{font-size:24px;font-weight:700}h2{font-size:17px;font-weight:700}p{color:var(--muted);line-height:1.45}.workspace{grid-template-columns:330px minmax(0,1fr);gap:14px;max-width:1480px;margin:0 auto;display:grid}.panel,.main-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px}.source-panel{flex-direction:column;align-self:start;gap:13px;padding:14px;display:flex}.main-panel{min-height:680px;overflow:hidden}.panel-title,.primary,.ghost,.icon-button,.upload-box,.tabs,.rooms-toolbar,.estimate-header{align-items:center;display:flex}.panel-title{gap:8px;font-weight:700}.field-label{color:var(--muted);text-transform:uppercase;font-size:12px;font-weight:700}select{border:1px solid var(--line);background:#fff;border-radius:6px;width:100%;min-height:38px;padding:8px}.primary,.ghost{cursor:pointer;border-radius:6px;gap:8px;min-height:38px;padding:8px 12px}.primary{background:var(--blue);border:1px solid var(--blue);color:#fff;font-weight:700}.primary:hover{background:var(--blue-dark)}.primary:disabled{cursor:wait;opacity:.75}.ghost{border:1px solid var(--line);color:var(--ink);background:#fff}.upload-box{cursor:pointer;border:1px dashed #99a3b3;border-radius:8px;gap:9px;min-height:72px;padding:12px}.upload-box input{display:none}.sample-list{flex-direction:column;gap:8px;display:flex}.sample-link{border:1px solid var(--line);color:var(--ink);border-radius:6px;flex-direction:column;gap:5px;padding:10px;text-decoration:none;display:flex}.sample-link span{color:var(--muted);font-size:12px;line-height:1.35}.error{background:var(--red-bg);color:var(--red);border-bottom:1px solid #ffc9c9;padding:12px 16px}.empty{color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:640px;display:flex}.summary-strip{border-bottom:1px solid var(--line);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.summary-strip div{border-right:1px solid var(--line);padding:14px 16px}.summary-strip div:last-child{border-right:0}.summary-strip span{color:var(--muted);margin-bottom:5px;font-size:12px;display:block}.summary-strip strong{font-size:18px}.tabs{border-bottom:1px solid var(--line);gap:4px;padding:8px 12px 0}.tabs button{cursor:pointer;background:0 0;border:0;border-bottom:3px solid #0000;padding:10px 12px}.tabs button.active{border-bottom-color:var(--blue);color:var(--blue);font-weight:700}.preview-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr) 290px;gap:14px;padding:14px;display:grid}figure{border:1px solid var(--line);border-radius:8px;margin:0;overflow:hidden}figure img{object-fit:contain;width:100%;max-height:620px;display:block}figcaption{border-top:1px solid var(--line);color:var(--muted);background:#f8fafc;padding:8px;font-size:12px}.takeoff-box{border:1px solid var(--line);border-radius:8px;padding:13px}dl{gap:10px;margin:14px 0 0;display:grid}dt{color:var(--muted);font-size:12px}dd{margin:2px 0 0;font-weight:700}.rooms-view,.estimate-view,.json-view{padding:14px}.rooms-toolbar,.estimate-header{justify-content:space-between;gap:12px;margin-bottom:12px}.button-row{gap:8px;display:flex}.room-list{border:1px solid var(--line);border-radius:8px;overflow:hidden}.room-row{border-bottom:1px solid var(--line);grid-template-columns:24px minmax(0,1fr) 110px;align-items:center;gap:10px;padding:10px 12px;display:grid}.room-row:last-child{border-bottom:0}.room-row strong{text-align:right}.import-result{background:#eef8f2;border:1px solid #b9e2c9;border-radius:8px;justify-content:space-between;align-items:center;gap:16px;margin-top:12px;padding:12px;display:flex}.table-wrap{border:1px solid var(--line);border-radius:8px;overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:980px}th,td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:10px}th{color:var(--muted);text-transform:uppercase;background:#f8fafc;font-size:12px}td small{color:var(--muted);margin-top:4px;line-height:1.35;display:block}tfoot td{font-weight:700}.pill{color:#fff;text-align:center;border-radius:999px;min-width:72px;padding:4px 8px;font-size:12px;display:inline-block}.pill.material{background:var(--green)}.pill.job{background:var(--orange)}.json-view pre{color:#e5e7eb;background:#111827;border-radius:8px;max-height:640px;margin:0;padding:14px;font-size:12px;line-height:1.45;overflow:auto}.spin{animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:1050px){.workspace,.preview-grid{grid-template-columns:1fr}.summary-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:720px){.shell{padding:10px}.topbar,.rooms-toolbar,.estimate-header,.import-result{flex-direction:column;align-items:stretch}.summary-strip{grid-template-columns:1fr}.summary-strip div{border-right:0}}