:root {
  --paper: #f5f2eb;
  --panel: #fbfaf6;
  --ink: #1c2530;
  --ink-2: #4b5663;
  --ink-3: #7d8691;
  --rule: #dcd6ca;
  --rule-2: #ebe6db;
  --blue: #1f5f99;
  --blue-2: #e3edf7;
  --amber: #b86a12;
  --amber-bg: #fdf1df;
  --red: #a8321d;
  --wood: #d9b98a;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font: 13px/1.4 var(--sans); color: var(--ink); background: var(--paper); font-variant-numeric: tabular-nums; }
button, input, select { font: inherit; color: inherit; }
button {
  background: #fff; border: 1px solid var(--rule); border-radius: 5px; padding: 4px 10px; cursor: pointer;
}
button:hover { border-color: var(--ink-3); }
button.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
button.primary:hover { background: #2d3a48; }
button.toggle.on { background: var(--blue-2); border-color: var(--blue); color: var(--blue); }
code { font-family: var(--mono); font-size: 12px; background: var(--rule-2); padding: 0 3px; border-radius: 3px; }
[hidden] { display: none !important; }

/* header */
.top {
  height: 46px; display: flex; align-items: center; gap: 16px; padding: 0 14px;
  background: var(--ink); color: #e8edf2; position: relative; z-index: 20;
}
.brand { font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.brand .mark { color: var(--wood); }
.design-name { font-weight: 400; color: #9fb0c0; margin-left: 8px; }
.stats { display: flex; gap: 6px; overflow-x: auto; flex: 1; scrollbar-width: none; }
.stat { white-space: nowrap; padding: 3px 9px; border-radius: 4px; background: rgba(255,255,255,.07); font-size: 12px; }
.stat b { color: #fff; font-weight: 600; margin-left: 4px; }
.stat.cost b { color: #ffd38a; }
.top-right { display: flex; align-items: center; gap: 10px; }
.busy { color: #9fb0c0; font-size: 12px; }
.warn-btn { background: var(--amber); border-color: var(--amber); color: #fff; font-weight: 600; }
.warn-pop {
  position: absolute; right: 12px; top: 44px; width: min(460px, 92vw); max-height: 60vh; overflow: auto;
  background: #fff; color: var(--ink); border: 1px solid var(--rule); border-radius: 8px; padding: 10px 14px;
  box-shadow: 0 8px 28px rgba(0,0,0,.18);
}
.warn-pop h4 { margin: 6px 0; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.warn-pop li { margin: 4px 0; }
.icon-btn { background: transparent; border: 0; color: #fff; font-size: 18px; padding: 2px 6px; }

/* layout */
.layout { display: flex; height: calc(100% - 46px); }
.side { width: 360px; min-width: 300px; background: var(--panel); border-right: 1px solid var(--rule); display: flex; flex-direction: column; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.tabs { display: flex; gap: 2px; padding: 8px 10px 0; border-bottom: 1px solid var(--rule); }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; padding: 6px 10px; color: var(--ink-2); }
.tabs button.on { border-bottom-color: var(--ink); color: var(--ink); font-weight: 600; }
.main-tabs { background: var(--panel); }
.pane { display: none; flex: 1; overflow: auto; padding: 10px 12px 40px; }
.pane.on { display: block; }
.pane-tools { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; position: sticky; top: -10px; background: var(--panel); padding: 6px 0; z-index: 2; }
.pane-tools.wrap { flex-wrap: wrap; }
.grow { flex: 1; }
.chk { display: inline-flex; align-items: center; gap: 4px; color: var(--ink-2); }
.hint { color: var(--ink-3); font-size: 12px; margin: 4px 0 10px; }

/* design form */
details.sec { border: 1px solid var(--rule); border-radius: 7px; background: #fff; margin-bottom: 8px; }
details.sec > summary { cursor: pointer; padding: 7px 10px; font-weight: 600; list-style: none; display: flex; align-items: center; gap: 6px; }
details.sec > summary::before { content: "\25B8"; color: var(--ink-3); font-size: 10px; transition: transform .15s; }
details.sec[open] > summary::before { transform: rotate(90deg); }
details.sec > .body { padding: 2px 10px 10px; border-top: 1px solid var(--rule-2); }
.field { display: grid; grid-template-columns: 1fr 140px; align-items: center; gap: 8px; padding: 3px 0; }
.field label { color: var(--ink-2); }
.field label .q { color: var(--ink-3); cursor: help; margin-left: 3px; font-size: 11px; }
.field .ctl { display: flex; align-items: center; gap: 4px; }
.field input[type=number], .field input[type=text], .field select { width: 100%; padding: 3px 6px; border: 1px solid var(--rule); border-radius: 4px; background: #fff; }
.field input[type=number] { text-align: right; font-family: var(--mono); font-size: 12px; }
.field .unit { color: var(--ink-3); font-size: 11px; min-width: 18px; }
.field.wide { grid-template-columns: 1fr; }
.missing { color: var(--red); }
table.list { width: 100%; border-collapse: collapse; margin-top: 4px; }
table.list th { text-align: left; font-weight: 500; color: var(--ink-3); font-size: 11px; padding: 2px 3px; }
table.list td { padding: 2px 3px; vertical-align: middle; }
table.list input, table.list select { width: 100%; padding: 2px 4px; border: 1px solid var(--rule); border-radius: 4px; background: #fff; font-size: 12px; }
table.list input[type=number] { font-family: var(--mono); text-align: right; }
.rowbtns { white-space: nowrap; }
.rowbtns button { padding: 0 5px; font-size: 11px; line-height: 18px; }
.add-row { margin-top: 6px; font-size: 12px; }

/* materials editor */
.subtabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
.subtabs button { padding: 3px 9px; font-size: 12px; }
.subtabs button.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.mat-table { width: 100%; border-collapse: collapse; }
.mat-table th { text-align: left; font-weight: 500; color: var(--ink-3); font-size: 11px; padding: 3px; }
.mat-table td { padding: 2px; }
.mat-table input, .mat-table select { width: 100%; padding: 2px 4px; border: 1px solid var(--rule); border-radius: 4px; font-size: 12px; background: #fff; }

/* designs list */
.design-list { list-style: none; padding: 0; margin: 0; }
.design-list li { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border: 1px solid var(--rule); border-radius: 6px; background: #fff; margin-bottom: 6px; cursor: pointer; }
.design-list li:hover { border-color: var(--blue); }
.design-list li.cur { border-color: var(--ink); box-shadow: inset 3px 0 0 var(--ink); }
.design-list .nm { flex: 1; font-weight: 500; }
.design-list .dt { color: var(--ink-3); font-size: 11px; }
.design-list .del { border: 0; background: transparent; color: var(--ink-3); padding: 0 4px; }
.design-list .del:hover { color: var(--red); }
.file-btn { border: 1px solid var(--rule); border-radius: 5px; padding: 4px 10px; background: #fff; cursor: pointer; }
.file-btn input { display: none; }

/* views */
.view { display: none; flex: 1; position: relative; min-height: 0; }
.view.on { display: block; }
.view.scroll { overflow: auto; }
#gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#gl:active { cursor: grabbing; }
.seg { display: flex; background: #fff; border: 1px solid var(--rule); border-radius: 6px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.seg button { border: 0; border-right: 1px solid var(--rule-2); border-radius: 0; padding: 4px 9px; font-size: 12px; }
.seg button:last-child { border-right: 0; }
.layers { position: absolute; top: 10px; left: 10px; background: rgba(255,255,255,.92); border: 1px solid var(--rule); border-radius: 6px; padding: 6px 10px; font-size: 12px; }
.layers h5 { margin: 0 0 4px; font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.layers label { display: flex; gap: 6px; align-items: center; padding: 1px 0; text-transform: capitalize; cursor: pointer; }
.part-info { position: absolute; top: 10px; right: 10px; width: 290px; max-height: calc(100% - 60px); overflow: auto; background: #fff; border: 1px solid var(--rule); border-radius: 8px; padding: 10px 12px; box-shadow: 0 6px 22px rgba(0,0,0,.12); }
.part-info h3 { margin: 0 24px 2px 0; font-size: 14px; }
.part-info .sub { color: var(--ink-3); font-size: 11px; margin-bottom: 8px; text-transform: capitalize; }
.part-info table { width: 100%; border-collapse: collapse; }
.part-info td { padding: 3px 0; border-top: 1px solid var(--rule-2); vertical-align: top; }
.part-info td:first-child { color: var(--ink-3); width: 45%; padding-right: 8px; }
.part-info .x { position: absolute; top: 6px; right: 6px; border: 0; background: transparent; font-size: 16px; color: var(--ink-3); }
.help-chip { position: absolute; bottom: 10px; left: 10px; font-size: 11px; color: var(--ink-3); background: rgba(255,255,255,.8); padding: 3px 8px; border-radius: 4px; pointer-events: none; }

/* plans */
.plans { display: grid; grid-template-columns: repeat(auto-fill, minmax(520px, 1fr)); gap: 14px; padding: 14px; }
.plan-card { background: #fff; border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.plan-card header { display: flex; align-items: center; justify-content: space-between; padding: 6px 10px; border-bottom: 1px solid var(--rule-2); font-weight: 600; }
.plan-card header .btns { display: flex; gap: 6px; }
.plan-card header button { font-size: 11px; padding: 2px 8px; font-weight: 400; }
.plan-card .svgwrap { padding: 6px; cursor: zoom-in; }
.plan-card svg { width: 100%; height: auto; display: block; }
.modal { position: fixed; inset: 0; background: rgba(20,26,33,.6); z-index: 50; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal-inner { background: #fff; border-radius: 8px; width: 100%; height: 100%; overflow: auto; padding: 10px; }
.modal-inner svg { width: 100%; min-width: 900px; height: auto; }

/* bom */
.bom { padding: 14px 18px 60px; max-width: 1100px; }
.bom h2 { font-size: 15px; margin: 22px 0 8px; display: flex; align-items: center; gap: 10px; }
.bom h2 .tot { margin-left: auto; font-family: var(--mono); font-weight: 600; }
.bom h2 button { font-size: 11px; font-weight: 400; padding: 2px 8px; }
table.t { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--rule); border-radius: 6px; overflow: hidden; }
table.t th { text-align: left; background: var(--rule-2); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-2); padding: 5px 8px; }
table.t td { padding: 4px 8px; border-top: 1px solid var(--rule-2); vertical-align: top; }
table.t td.n, table.t th.n { text-align: right; font-family: var(--mono); font-size: 12px; white-space: nowrap; }
table.t td.dim { color: var(--ink-3); font-size: 12px; }
.totals { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.totals .card { background: #fff; border: 1px solid var(--rule); border-radius: 7px; padding: 8px 10px; }
.totals .card .k { color: var(--ink-3); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; }
.totals .card .v { font-family: var(--mono); font-size: 16px; font-weight: 600; }
.totals .card.grand { background: var(--ink); color: #fff; border-color: var(--ink); }
.totals .card.grand .k { color: #aebccb; }
details.plan-list { background: #fff; border: 1px solid var(--rule); border-radius: 6px; padding: 6px 10px; }
details.plan-list summary { cursor: pointer; font-weight: 600; }
.boardplan { font-family: var(--mono); font-size: 12px; padding: 3px 0; border-top: 1px solid var(--rule-2); }
.boardplan .bar { display: flex; height: 14px; margin-top: 3px; border: 1px solid #b9a27e; border-radius: 2px; overflow: hidden; background: repeating-linear-gradient(45deg, #f2ece1, #f2ece1 4px, #e6dccb 4px, #e6dccb 8px); }
.boardplan .bar span { background: var(--wood); border-right: 2px solid #fff; }
.note { color: var(--ink-3); font-size: 12px; margin-top: 6px; }

/* report */
.report-tools { padding: 10px 18px 0; }
.report { padding: 14px 18px 60px; max-width: 1000px; }
.report h1 { font-size: 20px; margin: 0 0 4px; }
.report h2 { font-size: 15px; margin: 22px 0 6px; border-bottom: 2px solid var(--ink); padding-bottom: 3px; }
.report .meta { color: var(--ink-3); margin-bottom: 10px; }
.report .params { columns: 2; column-gap: 24px; font-size: 12px; }
.report .params .grp { break-inside: avoid; margin-bottom: 8px; }
.report .params .grp b { display: block; margin-bottom: 2px; }
.report .params .kv { display: flex; justify-content: space-between; border-bottom: 1px dotted var(--rule); }
.report .dwg-page { break-before: page; margin-top: 18px; }
.report .dwg-page svg { width: 100%; height: auto; }
.disclaimer { margin-top: 20px; padding: 10px 12px; background: var(--amber-bg); border-left: 3px solid var(--amber); font-size: 12px; }

@media (max-width: 900px) {
  .side { position: fixed; top: 46px; bottom: 0; left: 0; z-index: 15; width: 92vw; transform: translateX(-100%); transition: transform .2s; box-shadow: 4px 0 20px rgba(0,0,0,.2); }
  .side.open { transform: none; }
  .plans { grid-template-columns: 1fr; }
  .stats { display: none; }
  .help-chip { display: none; }
}
@media (min-width: 901px) { .only-narrow { display: none; } }

@media print {
  body { background: #fff; }
  .top, .side, .main-tabs, .report-tools, .view:not([data-view=report]) { display: none !important; }
  .layout { display: block; height: auto; }
  .view[data-view=report] { display: block !important; overflow: visible; }
  .report { padding: 0; max-width: none; }
  table.t { font-size: 11px; }
}

/* list cards (doors, windows, fence types, runs...) */
.list-editor { min-width: 0; }
.lrow { padding: 4px 8px 6px; border: 1px solid var(--rule-2); border-radius: 6px; margin-top: 6px; background: #fdfcf9; }
.lrow .lhead { display: flex; align-items: center; gap: 6px; min-height: 24px; }
.lrow .ltoggle { border: 0; background: transparent; padding: 0 2px; color: var(--ink-3); font-size: 10px; width: 16px; }
.lrow .ltoggle::before { content: "\25BE"; }
.lrow.collapsed .ltoggle::before { content: "\25B8"; }
.lrow.collapsed > .lbody { display: none; }
.lrow .lsum { flex: 1; min-width: 0; font-size: 12px; color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lrow .lbody { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 4px 8px; padding-top: 4px; }
.lrow .lbody > .field { display: flex; flex-direction: column; align-items: stretch; gap: 1px; padding: 0; font-size: 11px; min-width: 0; }
.lrow .lbody > .field > label { color: var(--ink-3); font-size: 11px; }
.lrow .lbody > .field.bool { flex-direction: row; align-items: center; gap: 5px; grid-column: 1 / -1; }
.lrow .lbody > .field.bool span { color: var(--ink-2); font-size: 12px; }
.lrow .lbody input[type=number], .lrow .lbody input[type=text], .lrow .lbody select { width: 100%; padding: 3px 5px; border: 1px solid var(--rule); border-radius: 4px; background: #fff; font-size: 12px; color: var(--ink); }
.lrow .lbody input[type=number] { font-family: var(--mono); text-align: right; }
.lrow .lbody > .presets, .lrow .lbody > .nested-list { grid-column: 1 / -1; min-width: 0; }
.lrow .nested-list { border-top: 1px solid var(--rule-2); padding-top: 5px; }
.nested-list-label { margin: 2px 0 4px; color: var(--ink-2); font-size: 11px; font-weight: 700; }
.lrow.nested { background: #fff; }
.field.bool { display: flex; align-items: center; gap: 6px; padding: 4px 0; cursor: pointer; }
.field.bool span { color: var(--ink-2); }
.sec-desc { margin: 6px 0 4px; }

/* design panel */
.side-tabs { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: thin; padding: 6px 6px 0; align-items: flex-end; }
.side-tabs button { white-space: nowrap; padding: 6px 8px; flex: none; }
.side-tabs button.st-tab { color: var(--ink); }
.side-tabs button.st-tab.cover { font-style: italic; }
.side-tabs .add-wrap { position: relative; flex: none; margin-right: 6px; }
.side-tabs .add-st { border: 1px solid var(--rule); border-radius: 5px; padding: 1px 8px; margin-bottom: 4px; font-weight: 700; }
.menu { position: fixed; z-index: 40; background: #fff; border: 1px solid var(--rule); border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.16); padding: 4px; display: flex; flex-direction: column; min-width: 190px; }
.menu button { border: 0; text-align: left; padding: 6px 10px; border-radius: 4px; background: transparent; }
.menu button:hover { background: var(--blue-2); }
.menu hr { border: 0; border-top: 1px solid var(--rule-2); margin: 4px 0; }
.side-panes { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.side-foot { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-top: 1px solid var(--rule); background: var(--panel); }
.permit-line { font-size: 11px; color: var(--ink-3); text-align: right; }
.permit-line.over, .permit.over { color: var(--red); font-weight: 600; }
.st-head { border: 1px solid var(--rule); border-radius: 7px; background: #fff; padding: 6px 10px 8px; margin-bottom: 8px; }
.st-head .kind { color: var(--ink-2); font-size: 12px; }
.st-head .permit-row { grid-template-columns: 90px 1fr; align-items: start; }
.st-head .permit { font-size: 12px; }
.st-head .btnrow, .btnrow { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.list-title { margin: 16px 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); display: flex; align-items: center; gap: 8px; }
.list-title button.small, button.small { font-size: 11px; padding: 1px 8px; text-transform: none; letter-spacing: 0; }
.design-list li.empty { cursor: default; border-style: dashed; }
.table-scroll { overflow-x: auto; }
.warn-btn.quiet { background: #53606d; border-color: #53606d; }

/* user guide */
.guide { padding: 18px 24px 60px; max-width: 980px; }

/* site plan */
.view[data-view=site].on { display: flex; flex-direction: column; }
.site-tools { display: flex; flex-wrap: wrap; gap: 6px 14px; padding: 8px 10px; background: var(--panel); border-bottom: 1px solid var(--rule); }
.tgroup { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.tlabel { font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-right: 2px; }
.site-tools button, .site-tools .file-btn, .site-tools select { font-size: 12px; padding: 3px 9px; }
.site-tools select { border: 1px solid var(--rule); border-radius: 5px; background: #fff; }
.site-tools button.active { background: #ff8a1f; border-color: #e07012; color: #fff; }
.site-wrap { position: relative; flex: 1; min-height: 0; }
#siteCanvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }
.site-hint { position: absolute; left: 10px; top: 10px; max-width: min(560px, 70%); background: rgba(28,37,48,.86); color: #fff; font-size: 12px; padding: 6px 10px; border-radius: 6px; pointer-events: none; }
.site-hint:empty { display: none; }
.site-insp { position: absolute; right: 10px; top: 70px; width: 260px; max-height: calc(100% - 90px); overflow: auto; background: #fff; border: 1px solid var(--rule); border-radius: 8px; padding: 10px 12px; box-shadow: 0 6px 22px rgba(0,0,0,.14); }
.site-insp h3 { margin: 0 0 8px; font-size: 14px; text-transform: capitalize; }
.site-insp .field { grid-template-columns: 1fr 110px; }
.site-insp .meta { color: var(--ink-3); font-size: 12px; margin: 6px 0; }
.site-insp .btnrow { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.dlg { position: fixed; inset: 0; background: rgba(20,26,33,.55); z-index: 60; display: flex; align-items: center; justify-content: center; padding: 16px; }
.dlg-box { background: #fff; border-radius: 10px; width: min(520px, 100%); max-height: 92vh; overflow: auto; padding: 16px 18px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.dlg-box h3 { margin: 0 0 10px; font-size: 16px; }
.dlg-box label.row { display: block; margin: 8px 0; font-size: 12px; color: var(--ink-2); }
.dlg-box label.row input[type=text], .dlg-box label.row input[type=password], .dlg-box label.row select { display: block; width: 100%; margin-top: 3px; padding: 6px 8px; border: 1px solid var(--rule); border-radius: 5px; font-size: 13px; }
.dlg-box .two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.dlg-box .status { margin-top: 10px; font-size: 12px; background: var(--paper); border-radius: 6px; padding: 8px 10px; white-space: pre-wrap; min-height: 18px; }
.dlg-box .status.err { background: #fbe9e6; color: var(--red); }
.dlg-box .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.dlg-box .small { font-size: 11px; color: var(--ink-3); }

.presets { display: flex; gap: 4px; align-items: center; margin: 2px 0 6px; font-size: 12px; }
.presets button { flex: 1; }

/* ---- 3D, outputs, guide (agent B) ---- */
/* header settings menu */
.settings-btn { font-size: 18px; line-height: 1; padding: 2px 4px; color: #c9d4de; }
.settings-btn:hover { color: #fff; }
.settings-pop {
  position: absolute; right: 12px; top: 44px; min-width: 240px; background: #fff; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 8px; padding: 8px 12px 10px; box-shadow: 0 8px 28px rgba(0,0,0,.18); z-index: 30;
}
.settings-pop h4 { margin: 2px 0 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.settings-pop .chk { color: var(--ink); padding: 4px 0; cursor: pointer; }

/* 3D model: toolbar above the view, like the desktop */
.view[data-view=model].on { display: flex; flex-direction: column; }
.model-tools { display: flex; flex-wrap: wrap; gap: 6px; padding: 7px 10px; background: var(--panel); border-bottom: 1px solid var(--rule); }
.model-tools .seg { box-shadow: none; flex: none; }
.model-tools .seg button { white-space: nowrap; }
.seg button.toggle.on { background: var(--blue-2); color: var(--blue); }
.model-wrap { position: relative; flex: 1; min-height: 0; overflow: hidden; }
.gl-overlay { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.layers { top: 10px; max-height: calc(100% - 20px); overflow: auto; padding: 0; min-width: 130px; }
.layers-head { display: flex; align-items: center; gap: 8px; width: 100%; border: 0; background: transparent; padding: 5px 10px; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); }
.layers-head::before { content: "\25BE"; font-size: 10px; color: var(--ink-3); }
.layers.collapsed .layers-head::before { content: "\25B8"; }
.layers-head .count { margin-left: auto; font-weight: 400; color: var(--ink-3); letter-spacing: 0; }
.layers-list { padding: 0 10px 6px; }
.layers label.locked { color: var(--ink-3); cursor: default; }
.touch-only { display: none; }
@media (pointer: coarse) { .touch-only { display: block; } .mouse-only { display: none; } }

@media (max-width: 700px) {
  .model-tools { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; padding: 6px 8px; }
  .model-tools::-webkit-scrollbar { display: none; }
  .model-tools .seg button { padding: 6px 10px; }
  .layers { top: 8px; left: 8px; max-height: 45%; }
  .part-info { top: auto; bottom: 8px; left: 8px; right: 8px; width: auto; max-height: 42%; }
  .part-info:not([hidden]) ~ .help-chip { display: none; }
}

/* plans */
.plans { display: block; padding: 0; }
.plan-groups { padding: 12px 14px 0; margin: 0; }
.plan-groups button .n { margin-left: 6px; font-size: 11px; opacity: .65; }
.plans-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(520px, 100%), 1fr)); gap: 14px; padding: 14px; }
.plan-card header .ttl { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.plan-card header .btns { flex: none; margin-left: 8px; }
.modal-inner { display: flex; flex-direction: column; padding: 0; }
.modal-tools { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid var(--rule-2); background: #fff; }
.modal-svg { flex: 1; overflow: auto; padding: 10px; cursor: zoom-out; }
.modal-svg svg { width: 100%; min-width: 900px; height: auto; display: block; }
@media (max-width: 700px) { .modal { padding: 6px; } }

/* materials & cost */
.bom-tabs { position: sticky; top: 0; z-index: 2; background: var(--paper); padding: 12px 0 8px; margin: 0; border-bottom: 1px solid var(--rule-2); }
.bom h2 > span:first-child { min-width: 0; }
.bom .sec-intro { margin: -4px 0 6px; }
table.t tr.grp td { font-weight: 600; background: #faf8f3; border-top: 1px solid var(--rule); }
table.t tr.sub td:first-child { padding-left: 22px; color: var(--ink-2); }
table.t tr.sub td { font-size: 12px; }
table.t tr.total-row td { font-weight: 700; border-top: 2px solid var(--ink-3); }
@media (max-width: 700px) {
  .bom { padding: 0 10px 50px; }
  .bom h2 { flex-wrap: wrap; }
  table.t { font-size: 12px; }
  table.t td, table.t th { padding: 4px 6px; }
}

/* report */
.report .rep-st { margin-bottom: 14px; }
.report h3 { font-size: 13px; margin: 14px 0 4px; }
.report .rep-st > h3 .kind { font-weight: 400; color: var(--ink-3); font-size: 12px; margin-left: 6px; }
.report .permit { font-size: 12px; color: var(--ink-2); margin-bottom: 6px; }
.report .permit.over { color: var(--red); font-weight: 600; }
.report .rep-total { font-size: 13px; margin-top: 10px; }
.report .dwg-page h3 { margin-top: 0; }
.report .dwg svg { width: 100%; height: auto; display: block; }
@media (max-width: 700px) { .report .params { columns: 1; } .report { padding: 10px 12px 50px; } }
@media print {
  .report h2, .report h3 { break-after: avoid; }
  .report tr, .report .kv { break-inside: avoid; }
  .report .table-scroll { overflow: visible; }
  .report .dwg-page { break-inside: avoid; }
  .report .dwg svg { max-height: 9in; }
  .settings-pop, .warn-pop, .modal { display: none !important; }
}
@page { margin: 0.5in; }

/* user guide */
.guide { padding: 22px 24px 60px; max-width: 980px; margin: 0 auto; }
.g-hero { padding: 6px 0 10px; }
.g-hero h1 { font-size: 26px; margin: 0 0 6px; }
.g-hero .lead { font-size: 15px; color: var(--ink-2); max-width: 720px; margin: 0 0 12px; }
.g-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.g-actions button { padding: 7px 14px; font-size: 14px; }
.g-start { margin-top: 18px; background: #fff; border: 1px solid var(--rule); border-radius: 10px; padding: 12px 18px; }
.g-start h2, .g-text h2 { font-size: 16px; margin: 4px 0 8px; }
.g-steps { margin: 0; padding-left: 22px; font-size: 14px; }
.g-steps li { margin: 6px 0; }
.g-callout { display: block; margin: 14px 0; padding: 10px 14px; background: var(--amber-bg); border-left: 3px solid var(--amber); border-radius: 0 6px 6px 0; font-size: 13px; }
.g-toc { display: flex; flex-wrap: wrap; gap: 6px; margin: 16px 0; }
.g-toc a { font-size: 12px; padding: 4px 10px; border: 1px solid var(--rule); border-radius: 999px; background: #fff; color: var(--ink-2); text-decoration: none; }
.g-toc a:hover { border-color: var(--blue); color: var(--blue); }
.g-card { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 18px; align-items: start; background: #fff; border: 1px solid var(--rule); border-radius: 10px; padding: 14px 18px; margin-bottom: 14px; scroll-margin-top: 10px; }
.g-card.no-img { grid-template-columns: 1fr; }
.g-text { font-size: 13.5px; line-height: 1.5; }
.g-text p { margin: 0 0 8px; }
.g-text ul { margin: 0 0 8px; padding-left: 20px; }
.g-text li { margin: 3px 0; }
.g-open { margin-top: 4px; font-size: 12px; }
.g-fig { margin: 0; }
.g-fig img { width: 100%; height: auto; display: block; border: 1px solid var(--rule-2); border-radius: 6px; background: #fff; }
.g-foot { color: var(--ink-3); font-size: 12px; margin-top: 8px; }
@media (max-width: 700px) {
  .guide { padding: 14px 12px 50px; }
  .g-hero h1 { font-size: 22px; }
  .g-card { grid-template-columns: 1fr; padding: 12px 14px; }
  .g-fig { order: -1; }
}
/* ---- site plan (agent A) ---- */
.site-tools { align-items: center; gap: 6px; }
.site-tools .sp-cat::after { content: " \25BE"; color: var(--ink-3); font-size: 10px; }
.site-tools .sp-cat.open { background: var(--blue-2); border-color: var(--blue); }
.site-tools .toggle.on { background: var(--blue-2); border-color: var(--blue); color: var(--blue); }
.sp-sep { width: 1px; align-self: stretch; background: var(--rule); margin: 0 4px; }
.sp-menu { max-height: calc(100vh - 16px); overflow-y: auto; }
.sp-menu .sp-menu-h { font-size: 10px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); padding: 6px 10px 1px; }
.sp-menu .sp-menu-row { display: flex; gap: 2px; padding: 0 4px 2px; }
.sp-menu .sp-menu-row button { flex: 1; text-align: center; padding: 5px 8px; border: 1px solid var(--rule-2); background: #fff; }
.sp-menu .sp-menu-row button:hover { background: var(--blue-2); }
.sp-menu button:disabled { color: var(--ink-3); cursor: default; background: transparent; }
.sp-modebar { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.95); border: 1px solid var(--rule); border-radius: 8px; padding: 5px 8px; box-shadow: 0 4px 16px rgba(0,0,0,.15); white-space: nowrap; }
.sp-modebar span { font-size: 12px; color: var(--ink-2); margin-right: 4px; }
.site-insp { padding-top: 8px; }
.site-insp .insp-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 8px; margin-bottom: 6px; }
.site-insp .insp-head h3 { margin: 0; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.site-insp .insp-head .sub { color: var(--ink-3); font-size: 11px; order: 3; flex-basis: 100%; }
.site-insp .insp-head .x { border: 0; background: transparent; font-size: 18px; line-height: 1; padding: 0 2px; color: var(--ink-3); }
.site-insp .meta.note { color: var(--amber); }
.site-insp .btnrow.col { flex-direction: column; }
.site-insp .btnrow.col button { text-align: left; }
.site-insp .permit-box { font-size: 12px; background: var(--paper); border-radius: 6px; padding: 6px 8px; margin: 8px 0; color: var(--ink-2); }
.site-insp .nested-list { margin-top: 8px; }
.site-insp .field.bool { display: flex; }
.sp-ask .field { grid-template-columns: 1fr 150px; }
.sp-ask .sp-ask-msg { font-size: 13px; color: var(--ink-2); margin-bottom: 8px; white-space: pre-wrap; }
@media (max-width: 700px) {
  .site-tools { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: thin; }
  .site-tools button { flex: none; }
  .site-insp { left: 8px; right: 8px; top: auto; bottom: 8px; width: auto; max-height: 46%; }
  .site-hint { max-width: calc(100% - 70px); }
  .sp-modebar { bottom: auto; top: 56px; }
}
@media (pointer: coarse) {
  .sp-menu button { padding: 9px 12px; }
  .site-tools button { padding: 6px 10px; }
}
#siteCanvas:focus { outline: none; }