:root {
  --ink: #16243b; --ink2: #4a5a73; --ink3: #7b879a; --line: #dde3ec; --line2: #eef1f6;
  --bg: #f5f7fa; --card: #fff; --amber: #f5a524; --amber2: #fff4dd; --navy: #1f3354;
  --ok: #138a52; --okbg: #e3f6ec; --bad: #c2410c; --badbg: #fdebdf; --info: #2563eb;
  --r: 10px; --sh: 0 1px 2px rgb(16 24 40 / 6%), 0 1px 3px rgb(16 24 40 / 8%);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { font: 14px/1.5 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif; color: var(--ink); background: var(--bg); }
button, input, select { font: inherit; color: inherit; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; text-wrap: balance; }
p { text-wrap: pretty; }
small { color: var(--ink3); }

.top { display: flex; align-items: center; gap: 16px; padding: 10px 18px; background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand b { display: block; font-size: 15px; }
.brand small { display: block; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; margin-top: -2px; }
.proj { display: flex; gap: 8px; flex: 1; min-width: 260px; }
.proj input { flex: 1; min-width: 120px; border: 1px solid transparent; border-radius: 8px; padding: 6px 10px; font-weight: 600; background: var(--bg); }
.proj input:hover, .proj input:focus { border-color: var(--line); outline: none; background: #fff; }
.proj select { border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; background: #fff; }
.acts { display: flex; gap: 8px; margin-left: auto; align-items: center; }

.btn, button.ghost, button.primary, .seg button { display: inline-flex; align-items: center; gap: 6px; border-radius: 8px; padding: 7px 14px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-weight: 500; white-space: nowrap; transition: background .15s, border-color .15s; }
.btn:hover, button.ghost:hover { background: var(--line2); }
.btn.primary, button.primary { background: var(--navy); border-color: var(--navy); color: #fff; }
.btn.primary:hover, button.primary:hover { background: #2a4470; }
.btn.big { padding: 12px 20px; font-size: 15px; }
.btn .hint { font-weight: 400; opacity: .7; font-size: 12px; }
button.sm { padding: 5px 10px; font-size: 13px; }
button.danger { color: var(--bad); }
button:focus-visible, .btn:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.menu { position: relative; }
.drop { position: absolute; right: 0; top: calc(100% + 6px); background: #fff; border: 1px solid var(--line); border-radius: var(--r); box-shadow: 0 8px 28px rgb(16 24 40 / 14%); padding: 6px; min-width: 270px; z-index: 30; }
.drop button, .drop .drop-item { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 8px 10px; border-radius: 6px; cursor: pointer; }
.drop button:hover, .drop .drop-item:hover { background: var(--line2); }

.tabs { display: flex; gap: 2px; padding: 0 18px; background: var(--card); border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs button { border: 0; background: none; padding: 10px 14px; cursor: pointer; color: var(--ink2); border-bottom: 2px solid transparent; font-weight: 500; white-space: nowrap; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--amber); }
.tab { display: none; }
.tab.on { display: block; }
#tab-boq, #tab-catalog, #tab-std, #tab-help { padding: 20px 18px 60px; max-width: 1280px; margin: 0 auto; }

.welcome { max-width: 1040px; margin: 0 auto; padding: 44px 18px 60px; text-align: center; }
.welcome h1 { font-size: clamp(24px, 3.4vw, 34px); max-width: 760px; margin: 0 auto 10px; }
.welcome > p { color: var(--ink2); max-width: 640px; margin: 0 auto 28px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; text-align: left; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; cursor: pointer; box-shadow: var(--sh); transition: transform .15s, box-shadow .15s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgb(16 24 40 / 10%); }
.card svg { width: 100%; height: 110px; display: block; margin-bottom: 10px; background: var(--bg); border-radius: 8px; }
.card b { display: block; }
.card small { display: block; margin-top: 2px; }
.or { margin-top: 26px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.work { display: flex; flex-direction: column; height: calc(100vh - 106px); min-height: 560px; }
.sumbar { display: flex; gap: 8px; padding: 10px 18px; flex-wrap: wrap; border-bottom: 1px solid var(--line); background: var(--card); }
.kpi { padding: 4px 12px; border-left: 3px solid var(--line); }
.kpi b { display: block; font-size: 16px; font-variant-numeric: tabular-nums; }
.kpi small { display: block; font-size: 12px; }
.kpi.ok { border-color: var(--ok); }
.kpi.bad { border-color: var(--bad); }
.cols { flex: 1; display: grid; grid-template-columns: 260px 1fr 380px; grid-template-rows: minmax(0, 1fr); min-height: 0; }
.left, .right { background: var(--card); overflow: auto; }
.left { border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.right { border-left: 1px solid var(--line); padding: 16px; }
.floors { display: flex; flex-wrap: wrap; gap: 6px; padding: 12px 12px 6px; }
.floors button { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 4px 12px; cursor: pointer; font-size: 13px; }
.floors button.on { background: var(--navy); color: #fff; border-color: var(--navy); }
.floorOpts { padding: 0 12px 8px; display: flex; gap: 6px; flex-wrap: wrap; font-size: 12px; color: var(--ink2); align-items: center; }
.floorOpts input { width: 44px; border: 1px solid var(--line); border-radius: 6px; padding: 2px 4px; }
.floorOpts button { font-size: 12px; padding: 3px 8px; }
.rooms { list-style: none; margin: 0; padding: 0 8px 12px; overflow: auto; }
.rooms li { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.rooms li:hover { background: var(--line2); }
.rooms li.on { background: var(--amber2); }
.rooms li b { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rooms li small { grid-column: 1; }
.rooms li .st { grid-row: 1 / 3; grid-column: 2; align-self: center; }
.badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.badge.ok { background: var(--okbg); color: var(--ok); }
.badge.bad { background: var(--badbg); color: var(--bad); }

.center { display: flex; flex-direction: column; min-width: 0; }
.tools { display: flex; gap: 8px; padding: 8px 12px; flex-wrap: wrap; align-items: center; border-bottom: 1px solid var(--line); background: var(--card); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; padding: 5px 11px; font-size: 13px; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--navy); color: #fff; }
.chk { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; color: var(--ink2); }
.planWrap { position: relative; flex: 1; min-height: 0; background: #fbfcfe; background-image: radial-gradient(#e3e8f0 1px, transparent 1px); background-size: 18px 18px; }
.plan { width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; user-select: none; }
.plan.draw { cursor: crosshair; }
.plan text { font-family: inherit; pointer-events: none; }
.modeTip { position: absolute; left: 12px; top: 12px; background: var(--navy); color: #fff; padding: 6px 12px; border-radius: 8px; font-size: 13px; max-width: 70%; }
.legend { position: absolute; right: 12px; bottom: 12px; background: rgb(255 255 255 / 94%); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-size: 12px; }
.legend .ramp { width: 200px; height: 10px; border-radius: 3px; margin: 4px 0 2px; }
.legend .lbl { display: flex; justify-content: space-between; color: var(--ink2); }

.right h2 { font-size: 18px; margin-bottom: 2px; }
.fld { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 12px 0; }
.fld label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--ink2); }
.fld label.full { grid-column: 1 / -1; }
.fld input, .fld select { border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; font-size: 14px; color: var(--ink); background: #fff; width: 100%; }
.box { border: 1px solid var(--line); border-radius: var(--r); padding: 12px; margin: 12px 0; }
.box h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink3); margin-bottom: 8px; }
.big3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; text-align: center; }
.big3 b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; }
.big3 small { font-size: 11px; }
.lumCard { display: flex; gap: 10px; align-items: flex-start; }
.lumCard .sym { width: 36px; height: 36px; flex: none; border-radius: 8px; background: var(--amber2); display: grid; place-items: center; }
.checks { list-style: none; margin: 0; padding: 0; }
.checks li { display: grid; grid-template-columns: 18px 1fr auto; gap: 6px; padding: 5px 0; border-top: 1px solid var(--line2); font-size: 13px; }
.checks li:first-child { border-top: 0; }
.checks li .src { grid-column: 2 / -1; font-size: 11px; color: var(--ink3); }
.checks .y { color: var(--ok); font-weight: 700; }
.checks .n { color: var(--bad); font-weight: 700; }
.sol { background: var(--amber2); border-radius: var(--r); padding: 10px 12px; font-size: 13px; }
.opts { width: 100%; border-collapse: collapse; font-size: 12px; }
.opts td, .opts th { padding: 4px 6px; border-top: 1px solid var(--line2); text-align: left; }
.opts tr.pick { background: var(--amber2); }
.opts tr { cursor: pointer; }
.opts tr:hover td { background: var(--line2); }
.muted { color: var(--ink3); }

table.tbl { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; font-size: 13px; }
.tbl th, .tbl td { padding: 7px 10px; border-bottom: 1px solid var(--line2); text-align: left; vertical-align: top; }
.tbl th { background: var(--bg); font-weight: 600; color: var(--ink2); font-size: 12px; }
.tbl td.n, .tbl th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl tr.grp td { background: var(--line2); font-weight: 600; }
.tbl tfoot td { font-weight: 700; background: var(--bg); }
.tbl input.price { width: 110px; text-align: right; border: 1px solid var(--line); border-radius: 6px; padding: 3px 6px; }
.tblWrap { overflow-x: auto; }
.secHead { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; margin: 6px 0 14px; }
.secHead p { margin: 4px 0 0; color: var(--ink2); max-width: 760px; }
.note { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--amber); border-radius: 8px; padding: 10px 14px; margin: 14px 0; color: var(--ink2); }
.help { max-width: 820px; }
.help ol { padding-left: 20px; }
.help li { margin: 8px 0; }

dialog { border: 0; border-radius: 14px; padding: 0; width: min(880px, calc(100vw - 32px)); max-height: calc(100vh - 40px); box-shadow: 0 20px 60px rgb(16 24 40 / 30%); }
dialog::backdrop { background: rgb(16 24 40 / 45%); }
dialog form { padding: 20px 22px; display: flex; flex-direction: column; gap: 12px; }
dialog h2 { font-size: 18px; margin: 0; }
.dlgGrid { display: grid; grid-template-columns: 290px 1fr; gap: 16px; min-height: 0; }
.dlgGrid .side { display: flex; flex-direction: column; gap: 10px; }
.layerList { max-height: 210px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; font-size: 13px; }
.layerList label { display: flex; gap: 6px; align-items: center; padding: 2px 0; }
.layerList small { margin-left: auto; }
.prev { width: 100%; height: 380px; background: #fbfcfe; border: 1px solid var(--line); border-radius: 8px; }
.found { max-height: 200px; overflow: auto; font-size: 13px; border: 1px solid var(--line); border-radius: 8px; }
.found label { display: grid; grid-template-columns: 20px 1fr 150px 60px; gap: 6px; align-items: center; padding: 4px 8px; border-top: 1px solid var(--line2); }
.found select { font-size: 12px; border: 1px solid var(--line); border-radius: 6px; padding: 2px; }
.dlgFoot { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.busy { color: var(--ink2); font-size: 13px; }

#toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px); background: var(--navy); color: #fff; padding: 10px 18px; border-radius: 10px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 50; max-width: calc(100vw - 32px); }
#toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }
#report { display: none; }

@media (max-width: 1100px) {
  .cols { grid-template-columns: 220px 1fr; }
  .right { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--line); }
  .work { height: auto; }
  .center { height: 70vh; }
}
@media (max-width: 720px) {
  .top { padding: 8px 12px; gap: 8px; }
  .acts { margin-left: 0; width: 100%; }
  .acts .hint { display: none; }
  .cols { grid-template-columns: 1fr; }
  .left { border-right: 0; max-height: 240px; }
  .center { height: 65vh; }
  .dlgGrid { grid-template-columns: 1fr; }
  .prev { height: 260px; }
  .tabs { padding: 0 8px; }
  #tab-boq, #tab-catalog, #tab-std, #tab-help { padding: 14px 12px 40px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

@media print {
  @page { size: A4; margin: 14mm 12mm; }
  body { background: #fff; font-size: 11px; }
  .top, .tabs, main, dialog, #toast { display: none !important; }
  #report { display: block; }
  #report h1 { font-size: 20px; }
  #report h2 { font-size: 15px; margin-top: 18px; break-after: avoid; }
  #report .pg { break-before: page; }
  #report svg { width: 100%; max-height: 150mm; border: 1px solid #ccc; }
  #report table { width: 100%; border-collapse: collapse; font-size: 10px; }
  #report th, #report td { border: 1px solid #bbb; padding: 3px 5px; text-align: left; vertical-align: top; }
  #report td.n { text-align: right; }
  #report tr { break-inside: avoid; }
  #report .meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 10px 0; }
  #report .meta div { border: 1px solid #ccc; padding: 6px; }
  #report .meta b { display: block; font-size: 14px; }
}
.btnlink { display: inline-flex; align-items: center; border-radius: 8px; padding: 5px 10px; font-size: 13px; border: 1px solid var(--line); background: #fff; color: inherit; text-decoration: none; }
.btnlink:hover { background: var(--line2); }