/* =========================================================
   furniture.css — layout for the furniture / fabrication tool
   Minimal black & white, sharp corners. Shares tokens from styles.css.
   ========================================================= */

.furn-body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: transparent;            /* sand-bg.js paints behind */
  color: var(--ink);
}

/* ---- top bar ---- */
.furn-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 18px;
  background: #fff;
  border-bottom: 1px solid var(--ink);
}
.furn-logo {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ink);
  font-family: var(--display); font-weight: 700; font-size: 18px;
}
.furn-logo .logo-mark { width: 34px; height: 34px; }
.furn-tabs { display: flex; gap: 0; margin: 0 auto; border: 1px solid var(--ink); }
.furn-tab {
  background: #fff; color: var(--ink); border: 0; cursor: pointer;
  font: 600 12px/1 var(--display); letter-spacing: 0.12em; text-transform: uppercase;
  padding: 10px 18px;
}
.furn-tab + .furn-tab { border-left: 1px solid var(--ink); }
.furn-tab.is-active { background: var(--ink); color: #fff; }
.furn-actions { display: flex; gap: 10px; align-items: center; }
.furn-actions .btn { padding: 11px 16px; }

/* ---- main split ---- */
.furn-main { flex: 1 1 auto; display: flex; min-height: 0; }

.furn-stage {
  position: relative; flex: 1 1 auto; min-width: 0;
  background: #f6f5f2;                /* paper drawing surface (opaque) */
  overflow: hidden;
}
.furn-canvas { display: block; width: 100%; height: 100%; touch-action: none; cursor: crosshair; }
.furn-3d { position: absolute; inset: 0; background: #eceae6; overflow: hidden; }
.furn-3d canvas { display: block; width: 100% !important; height: 100% !important; }

.furn-hint {
  position: absolute; left: 12px; bottom: 12px;
  background: rgba(17,17,17,0.85); color: #fff;
  font: 500 12px/1.4 var(--sans); padding: 8px 12px; max-width: 60%;
  pointer-events: none;
}
.furn-explode {
  position: absolute; right: 12px; top: 12px;
  background: #fff; border: 1px solid var(--ink); padding: 8px 12px;
  font: 600 12px/1 var(--display); text-transform: uppercase; letter-spacing: 0.1em;
}
.furn-explode input { vertical-align: middle; }

/* ---- right tool panel ---- */
.furn-panel {
  flex: 0 0 312px; width: 312px;
  background: #fff; border-left: 1px solid var(--ink);
  padding: 16px; overflow-y: auto;
}
.furn-panel__title {
  margin: 0 0 12px; font: 600 13px/1 var(--display);
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-soft);
}
.furn-toolbtns { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 16px; }
.furn-toolbtns[hidden] { display: none; }
.furn-tool {
  background: #fff; border: 1px solid var(--ink); color: var(--ink); cursor: pointer;
  font: 600 12px/1.1 var(--display); padding: 12px 8px; text-align: center;
}
.furn-tool.is-active { background: var(--ink); color: #fff; }

.furn-group { border-top: 1px solid var(--line); padding: 14px 0; }
.furn-subhead {
  font: 600 11px/1 var(--display); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-soft); margin-bottom: 10px;
}
.furn-check { display: inline-flex; align-items: center; gap: 7px; margin-right: 16px; font-size: 13px; font-weight: 600; }
.furn-field { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 8px 0; font-size: 13px; font-weight: 600; }
.furn-field span { color: var(--ink-soft); }
.furn-field input, .furn-field select {
  width: 110px; padding: 8px 10px; border: 1px solid var(--ink); border-radius: 0;
  font: 600 13px/1 var(--sans); background: #fff; color: var(--ink);
}
.furn-selinfo { font-size: 13px; line-height: 1.5; min-height: 40px; }
.furn-help { font-size: 12px; color: var(--ink-soft); line-height: 1.5; margin: 4px 0 0; }

/* ---- wall openings palette ---- */
.furn-openrow { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.furn-chip { display: flex; flex-direction: column; align-items: center; gap: 6px; border: 1px solid var(--ink); background: #fff; cursor: grab; user-select: none; padding: 10px 4px; font: 600 11px/1 var(--display); }
.furn-chip:active { cursor: grabbing; }
.furn-chip__ico { width: 26px; height: 18px; border: 1.5px solid var(--ink); }
.furn-chip__ico--win { border-color: #2f6edc; box-shadow: inset 0 0 0 1px #2f6edc; }
.furn-chip__ico--door { border-radius: 0; border-bottom: 3px solid var(--ink); }
.furn-chip__ico--void { border-style: dashed; }
.furn-stage.is-drop-open { outline: 3px dashed #2f6edc; outline-offset: -6px; }

/* ---- zoom-to-fit button ---- */
.furn-fit {
  position: absolute; right: 12px; bottom: 12px; z-index: 20;
  background: #fff; border: 1px solid var(--ink); color: var(--ink); cursor: pointer;
  font: 600 12px/1 var(--display); letter-spacing: 0.06em; padding: 9px 12px;
}
.furn-fit:hover { background: var(--ink); color: #fff; }

/* ---- furniture front-elevation module editor (split-pane) ---- */
.furn-stage { --splitL: 50%; }
.furn-elevpane { position: absolute; top: 0; right: 0; bottom: 0; left: var(--splitL); z-index: 8; background: #f1efea; border-left: 1px solid var(--ink); display: flex; flex-direction: column; }
.furn-elevpane[hidden] { display: none; }
.furn-stage.is-split .furn-3d { right: calc(100% - var(--splitL)); }   /* 3D occupies the left part */
.furn-split-divider { position: absolute; top: 0; bottom: 0; left: var(--splitL); width: 9px; margin-left: -5px; z-index: 11; cursor: col-resize; }
.furn-split-divider[hidden] { display: none; }
.furn-split-divider::before { content: ""; position: absolute; top: 0; bottom: 0; left: 4px; width: 1px; background: var(--ink); }
.furn-split-divider:hover::before, .furn-split-divider.is-dragging::before { width: 3px; left: 3px; background: #2f6edc; }
.furn-elevpane__bar { flex: 0 0 auto; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 10px 12px; background: #fff; border-bottom: 1px solid var(--ink); }
.furn-elevpane__title { font: 600 11px/1 var(--display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); margin-right: 4px; }
.furn-elevpane__ang { font-size: 12px; font-weight: 600; display: inline-flex; align-items: center; gap: 5px; }
.furn-elevpane__ang input { width: 56px; padding: 6px 7px; border: 1px solid var(--ink); font: 600 12px/1 var(--sans); }
.furn-elev__btn { border: 1px solid var(--ink); background: #fff; color: var(--ink); cursor: pointer; font: 600 12px/1 var(--display); padding: 8px 12px; }
.furn-elev__btn.is-active { background: var(--ink); color: #fff; }
.furn-elev__btn--del { border-color: #c0392b; color: #c0392b; }
.furn-elev__btn--del:hover { background: #c0392b; color: #fff; }
.furn-elev__btn--del[hidden] { display: none; }
.furn-elev__hint { font-size: 11px; color: var(--ink-soft); line-height: 1.3; flex: 1 1 100%; }
.furn-elev { flex: 1 1 auto; position: relative; min-height: 0; overflow: hidden; touch-action: none; background: #fbfaf8; cursor: default; }
.furn-elev.is-pan { cursor: grabbing; }
.furn-elev svg { display: block; }
.furn-elev polygon.cell { cursor: pointer; }
.furn-cellpop { position: absolute; z-index: 12; background: #fff; border: 1px solid var(--ink); box-shadow: 0 4px 14px rgba(17,17,17,0.2); padding: 10px; width: 180px; }
.furn-cellpop[hidden] { display: none; }
.furn-cellpop__row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 4px 0; font-size: 12px; font-weight: 600; }
.furn-cellpop__row input[type=number] { width: 80px; padding: 6px 7px; border: 1px solid var(--ink); font: 600 12px/1 var(--sans); }
.furn-cellpop__chk { justify-content: flex-start; gap: 7px; }
.furn-elev .cell { cursor: pointer; }
.furn-elev .cell-full { fill: #e2d8c4; }
.furn-elev .cell-void { fill: #ffffff; }
.furn-elev .cell-outline { fill: none; stroke: #111; stroke-width: 1; }
.furn-elev .cell-sel { stroke: #c0392b; stroke-width: 2; }
.furn-elev .void-mark { stroke: #c9c2b4; stroke-width: 1; }
.furn-elev .dim { cursor: pointer; }
.furn-elev .dim-bg { fill: #fff; stroke: #d8d2c6; }
.furn-elev .dim-txt { font: 600 9px sans-serif; fill: #111; text-anchor: middle; dominant-baseline: middle; }
.furn-elev .cut-preview { stroke: #c0392b; stroke-width: 1.5; stroke-dasharray: 4 3; pointer-events: none; }
.furn-elev .cell-depth { font: 700 12px var(--sans); fill: #6b5d3e; text-anchor: middle; dominant-baseline: middle; pointer-events: none; }
.furn-elev .cut-hit { stroke: transparent; stroke-width: 14; pointer-events: stroke; cursor: pointer; }
.furn-elev .cell-access { fill: rgba(47,110,220,0.06); stroke: rgba(47,110,220,0.35); stroke-width: 1; stroke-dasharray: 4 3; cursor: pointer; }
.furn-elev .cell-access:hover { fill: rgba(47,110,220,0.16); }
.furn-elev .cell-access.is-on { fill: rgba(47,110,220,0.18); stroke: #2f6edc; stroke-width: 2; stroke-dasharray: none; }
.furn-elev .cut-line { stroke: #c0392b; stroke-width: 2.5; pointer-events: none; }
.furn-elev .gapdim { cursor: pointer; }
.furn-elev .gapdim-line { stroke: #c0392b; stroke-width: 1; stroke-dasharray: 3 3; pointer-events: none; }
.furn-elev .gapdim-bg { fill: #fff; stroke: #c0392b; }
.furn-elev .gapdim-txt { font: 700 9px var(--sans); fill: #c0392b; text-anchor: middle; dominant-baseline: middle; }
.furn-elev .gapdim.is-locked .gapdim-bg { fill: #c0392b; }
.furn-elev .gapdim.is-locked .gapdim-txt { fill: #fff; }
.furn-elev.is-cut svg { cursor: crosshair; }
.furn-elev .elevedit { position: absolute; }
.furn-elev-edit { position: absolute; z-index: 40; display: inline-flex; gap: 3px; background: #fff; border: 1px solid var(--ink); padding: 2px 3px; box-shadow: 0 2px 8px rgba(17,17,17,0.18); }
.furn-elev-edit[hidden] { display: none; }
.furn-elev-edit input { width: 64px; padding: 4px 5px; border: 1px solid var(--line); font: 700 12px/1 var(--sans); text-align: right; }

/* ---- inline number editor (tap a length / angle / dimension on the plan) ---- */
.furn-inline {
  position: absolute; z-index: 30; transform: translate(-50%, -50%);
  display: inline-flex; align-items: center; gap: 4px;
  background: #fff; border: 1px solid var(--ink); padding: 3px 4px;
  box-shadow: 0 2px 8px rgba(17,17,17,0.18);
}
.furn-inline[hidden] { display: none; }
.furn-inline input {
  width: 76px; padding: 5px 6px; border: 1px solid var(--line); border-radius: 0;
  font: 700 13px/1 var(--sans); color: var(--ink); text-align: right;
}
.furn-inline__unit { font: 600 11px/1 var(--sans); color: var(--ink-soft); }
.furn-inline__lock {
  border: 1px solid var(--ink); background: #fff; cursor: pointer;
  font-size: 13px; line-height: 1; padding: 4px 5px;
}
.furn-inline__lock.is-locked { background: var(--ink); }

/* selection property fields */
.furn-prop { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 8px 0; font-size: 13px; font-weight: 600; }
.furn-prop span { color: var(--ink-soft); }
.furn-prop input { width: 110px; padding: 8px 10px; border: 1px solid var(--ink); border-radius: 0; font: 600 13px/1 var(--sans); background: #fff; color: var(--ink); }
.furn-prop select { width: 132px; padding: 7px 8px; border: 1px solid var(--ink); border-radius: 0; font: 600 12px/1 var(--sans); background: #fff; color: var(--ink); }
.cellpop-detail { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line); }
.cellpop-detail select { width: 100px; padding: 5px 6px; border: 1px solid var(--ink); border-radius: 0; font: 600 11px/1 var(--sans); background: #fff; color: var(--ink); }
.furn-prop--ro span:last-child { color: var(--ink); font-weight: 700; }
.furn-prop__lock { width: auto; flex: 0 0 auto; }
.furn-lockline { display: flex; align-items: center; gap: 7px; margin: 8px 0 2px; font-size: 12px; font-weight: 600; color: var(--ink-soft); }

/* ---- furniture list + joints (furnishing mode) ---- */
.furn-addfurn {
  width: 100%; background: var(--ink); color: #fff; border: 1px solid var(--ink); cursor: pointer;
  font: 600 12px/1 var(--display); letter-spacing: 0.04em; padding: 12px 8px; margin-bottom: 10px;
}
.furn-addfurn:hover { background: #000; }
.furn-presets-label { font: 600 10px/1 var(--display); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted, #8a857c); margin: 0 0 6px; }
.furn-presets { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.furn-preset { flex: 1 1 auto; min-width: 56px; background: #fff; color: var(--ink); border: 1px solid var(--ink); cursor: pointer; font: 600 11px/1 var(--sans); padding: 8px 6px; }
.furn-preset:hover { background: var(--ink); color: #fff; }
.furn-list { list-style: none; margin: 0 0 6px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.furn-list:empty { display: none; }
.furn-item {
  display: flex; align-items: center; gap: 6px; padding: 8px 9px;
  border: 1px solid var(--ink); background: #fff; cursor: grab; user-select: none;
}
.furn-item:active { cursor: grabbing; }
.furn-item.is-sel { background: var(--ink); color: #fff; }
.furn-item__grip { font-size: 13px; line-height: 1; opacity: 0.5; }
.furn-item.is-sel .furn-item__grip { opacity: 0.8; }
.furn-item__name { flex: 1 1 auto; font: 600 13px/1.2 var(--sans); border: 0; background: transparent; color: inherit; padding: 2px 0; min-width: 0; }
.furn-item__name:focus { outline: 1px solid currentColor; }
.furn-item__dims { font: 500 11px/1 var(--sans); opacity: 0.6; white-space: nowrap; }
.furn-item__rm { border: 0; background: transparent; color: inherit; cursor: pointer; font-size: 16px; line-height: 1; padding: 0 2px; opacity: 0.6; }
.furn-item__rm:hover { opacity: 1; }
.furn-item__lock { flex: 0 0 auto; width: 15px; height: 15px; margin: 0; cursor: pointer; accent-color: #c0392b; }
.furn-item__detail { flex: 0 0 auto; border: 1px solid currentColor; background: transparent; color: inherit; cursor: pointer; font-size: 12px; line-height: 1; padding: 2px 5px; opacity: 0.65; border-radius: 0; }
.furn-item__detail:hover { opacity: 1; }
.furn-item__detail.is-active { background: #c0392b; color: #fff; border-color: #c0392b; opacity: 1; }
.furn-joints__head { margin-top: 14px; }
.furn-joints { display: flex; flex-direction: column; gap: 8px; }
.furn-jointrow { border: 1px solid var(--line); padding: 8px 9px; font-size: 12px; }
.furn-jointrow__top { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 6px; font-weight: 600; }
.furn-jointrow__with { color: var(--ink-soft); font-weight: 500; }
.furn-jointrow select { width: 100%; padding: 6px 8px; border: 1px solid var(--ink); border-radius: 0; font: 600 12px/1 var(--sans); background: #fff; color: var(--ink); }
.furn-jointrow__gap { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 6px; }
.furn-jointrow__gap input { width: 90px; padding: 6px 8px; border: 1px solid var(--ink); border-radius: 0; font: 600 12px/1 var(--sans); }
.furn-jointrow__rm { border: 0; background: transparent; color: var(--ink-soft); cursor: pointer; font-size: 11px; text-decoration: underline; padding: 0; margin-top: 6px; }
.furn-3d--drop { outline: 3px dashed var(--ink); outline-offset: -6px; }

/* ---- detail modules: module list + cards ---- */
.furn-detail__top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.furn-detail__done { border: 1px solid var(--ink); background: var(--ink); color: #fff; cursor: pointer; font: 600 12px/1 var(--display); padding: 6px 10px; }
.furn-detail__defaults { border: 1px solid var(--line); padding: 4px 9px; }
.furn-detail__defaults > summary { cursor: pointer; font: 600 11px/1 var(--display); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); padding: 5px 0; }
.furn-modlist { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.furn-mod { border: 1px solid var(--ink); background: #fff; }
.furn-mod.is-open { box-shadow: 0 1px 0 var(--ink); }
.furn-mod.is-void { opacity: 0.72; }
.furn-mod__head { display: flex; align-items: center; gap: 7px; padding: 8px 9px; cursor: pointer; user-select: none; }
.furn-mod__caret { font-size: 10px; width: 10px; color: var(--ink-soft); }
.furn-mod__name { flex: 1 1 auto; font: 600 13px/1.2 var(--sans); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.furn-mod__rename { width: 100%; font: 600 13px/1 var(--sans); border: 1px solid var(--ink); padding: 2px 4px; }
.furn-mod__badge { flex: 0 0 auto; font: 600 10px/1 var(--sans); color: #fff; background: var(--ink-soft); padding: 3px 6px; border-radius: 9px; white-space: nowrap; }
.furn-mod.is-void .furn-mod__badge { background: #b9b3a6; }
.furn-mod__body { padding: 4px 9px 10px; border-top: 1px solid var(--line); }
.furn-mod__btn { border: 1px solid var(--ink); background: #fff; cursor: pointer; font: 600 12px/1 var(--sans); padding: 6px 9px; }
.furn-mod__vp { margin-top: 8px; border: 1px solid var(--line); background: #fbfaf8; padding: 4px; }
.furn-mod__vp .mod-mini { display: block; width: 100%; height: auto; }
.mod-mini__panel { fill: #e2d8c4; stroke: #111; stroke-width: 1.5; }
.mod-mini__div { stroke: #6b5d3e; stroke-width: 1.2; }
.mod-mini__handle { stroke: #6b5d3e; stroke-width: 2; }
.mod-mini__door { fill: rgba(111,93,62,0.10); stroke: #6b5d3e; stroke-width: 1.2; }
.mod-mini__rail { stroke: #2f6edc; stroke-width: 2.5; stroke-linecap: round; }
.furn-elev .cell-detail { fill: #d9c6a0; }
.furn-elev .cell-name { font: 700 10px var(--sans); fill: #111; text-anchor: middle; dominant-baseline: middle; pointer-events: none; }
/* build view (AutoCAD-style construction line-work; hidden = dashed) */
.furn-elev .build-open { fill: none; stroke: #5b513f; stroke-width: 1; pointer-events: none; }
.furn-elev .build-hidden { fill: none; stroke: #8a7f68; stroke-width: 0.9; stroke-dasharray: 5 3; pointer-events: none; }
.furn-elev .build-front { fill: rgba(111,93,62,0.10); stroke: #4a4030; stroke-width: 1.2; pointer-events: none; }
.furn-elev .build-shelf { stroke: #5b513f; stroke-width: 1.4; pointer-events: none; }
.furn-elev .build-shelf-bar { fill: #cdbfa6; stroke: #5b513f; stroke-width: 0.8; pointer-events: none; }
.furn-elev .build-rail { stroke: #2f6edc; stroke-width: 2; stroke-linecap: round; pointer-events: none; }
.furn-elev .build-handle { stroke: #222; stroke-width: 2.2; stroke-linecap: round; pointer-events: none; }
.furn-elev .dim-ro { pointer-events: none; }
.furn-elev .dim-ro .dim-bg { fill: #f3f1ec; stroke: #cfc8ba; }

/* ---- value prompt modal ---- */
.furn-modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(17,17,17,0.45);
  display: flex; align-items: center; justify-content: center;
}
.furn-modal[hidden] { display: none; }
.furn-modal__panel { background: #fff; border: 1px solid var(--ink); padding: 22px; width: min(360px, 90vw); }
.furn-modal__panel p { margin: 0 0 12px; font-weight: 600; }
.furn-modal__panel input {
  width: 100%; padding: 11px 12px; border: 1px solid var(--ink); border-radius: 0;
  font: 600 15px/1 var(--sans); margin-bottom: 16px;
}
.furn-modal__actions { display: flex; justify-content: flex-end; gap: 10px; }

/* undo / redo icon buttons */
.furn-hist { display: flex; gap: 6px; }
.furn-icon { width: 38px; height: 38px; border: 1px solid var(--ink); background: #fff; color: var(--ink); font-size: 18px; line-height: 1; cursor: pointer; }
.furn-icon:disabled { opacity: 0.3; cursor: default; }
.furn-icon:not(:disabled):hover { background: var(--ink); color: #fff; }

/* verify gate (PDF download) */
.furn-gate { position: fixed; inset: 0; z-index: 60; background: rgba(17,17,17,0.5); display: flex; align-items: center; justify-content: center; }
.furn-gate[hidden] { display: none; }
.furn-gate__panel { background: #fff; border: 1px solid var(--ink); padding: 26px; width: min(380px, 92vw); }
.furn-gate__panel h3 { margin: 0 0 6px; font-family: var(--display); font-weight: 600; }
.furn-gate__panel p { margin: 0 0 14px; font-size: 13px; color: var(--ink-soft); line-height: 1.45; }
.furn-gate__panel input { width: 100%; box-sizing: border-box; padding: 11px 12px; border: 1px solid var(--ink); border-radius: 0; font: 600 14px/1 var(--sans); margin-bottom: 10px; }
.furn-gate__err { color: #c0392b; font-weight: 600; font-size: 13px; }
.furn-gate__actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

@media (max-width: 760px) {
  .furn-main { flex-direction: column; }
  .furn-panel { flex-basis: auto; width: auto; border-left: 0; border-top: 1px solid var(--ink); max-height: 42vh; }
  .furn-tabs { margin: 0; }
  .furn-logo span:last-child { display: none; }
}