v0.7.1: UI-overhaul, ribbon vervangen door de indeling van CAD/BIM-pakketten met elke functie op één plek: bovenbalk met menu Bestand (nieuw, openen, opslaan, exporteren, projectgegevens, kosten & tijden) · Beeld · Help, de ontwerpen als tabs en de knop Opslaan; links de structuur met inklapbare groepen (onthouden, groep met de selectie klapt vanzelf open); werkbalk boven de viewports met gereedschap (Selecteren V, Binnenwand W, Ruimte R, Inrichting I, opties van het gereedschap ernaast, Unit toevoegen) en weergave (één Lagen-menu met bouwfase voor 2D en 3D, Omgeving, Doorsnede X, Render, Lopen L, Rapport 4, 2D + 3D / 2D / 3D met 1/2/3); rechts het eigenschappenpaneel (Inspector: selectie met kruimelpad, of de woning met kerncijfers en inklapbare secties Gevel, Dak, Binnen, Verlichting, Elektra, Constructie); statusbalk met hint en meldingen; wand- en vloer/dak-editor in dezelfde indeling (paneel rechts met tab Resultaat, terug met ← Woning of Esc); sneltoetsenoverzicht (?), Ctrl+O, Ctrl+\ panelen verbergen; rapport als masonry; dubbele functies weg (lagenbalk, Beeld-tab en Weergave-filter, export en kosten op twee plekken, Snel nieuw); oude onderdelen gelijkgetrokken (dialoogknoppen, materiaalknoppen, chassis als schakelaar, eenheden); weergavelagen (ViewLayers) i.p.v. bouwfasen, elk los aan/uit; render-export met Blender-script voor de lampen; elektraleidingen boven een vals plafond en haaks binnen de units bij een L/T-vorm

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 23:16:43 +02:00
parent adb3c74f85
commit ab0dca9bb5
22 changed files with 1484 additions and 1027 deletions
@@ -18,12 +18,13 @@ build-stap. Direct openen via `file://` werkt niet (texturen/lucht).
 ## Structuur
 ```
-index.html          app-shell: ribbon, splashscreen
+index.html          app-shell: bovenbalk (menu, documenten, opslaan), sneltoetsen, splashscreen
 css/app.css         alle stijl
 js/vendor/          three.js r128, eigen OrbitControls, jsPDF
-js/core/            gedeelde helpers: geometrie, bouwfasen, ribbon, UI-kit, PDF-bladen,
+js/core/            gedeelde helpers: geometrie, weergavelagen (lagenmenu), menubalk, eigenschappenpaneel
                    (inspector.js), UI-kit (werkbalk, weergave, popovers), PDF-bladen,
                    DXF-schrijver (dxf-writer.js), IFC-schrijver (ifc-writer.js), OBJ-schrijver
-                    (obj-writer.js), ZIP (zip-writer.js), labels, camerageheugen, weergavefilter,
+                    (obj-writer.js), ZIP (zip-writer.js), labels, camerageheugen,
                    skybox, licentie, logo
 js/wall/            WallModel (logica) + wand-PDF + wand-editor
 js/floor/           FloorModel (logica) + vloer-PDF + vloer-editor
@@ -57,9 +58,11 @@ assets/             logo, texturen, skybox
 - **Assen/zijden.** Bovenaanzicht boven = noord: voor = noord, achter = zuid,
  links = west, rechts = oost (interne sleutels blijven voor/achter/…).
 - **Hoogtes** gelden vanaf bovenkant vloer (loopvlak).
- **Bouwfasen** (`BuildStages`): regelwerk → elektra (buizen, dozen, meterkast) → beplating → vochtdoek →
+- **Weergavelagen** (`ViewLayers`): regelwerk, elektra, beplating, vochtdoek,
-  latwerk → gevel & dak → afgewerkt, de volgorde in de hal. De 3D toont de
+  latwerk, gevelbekleding, kozijnen, dakbedekking, afwerking, verlichting,
-  gekozen fase; lagen die daarin aan beide zijden zijn ingesloten worden niet
+  inrichting, ruimtes, dak en maten, elk los aan/uit; de snelkeuze Fase zet
  alles tot en met een bouwfase aan (de volgorde in de hal). Lagen die aan
  beide zijden zijn ingesloten worden niet
  gebouwd (stijlen tussen spaanplaat en doek, latten en doek achter de rabat,
  sporen tussen plafond en dakbedekking). Specificaties en totalen rekenen
  altijd met alle lagen.
@@ -151,7 +154,7 @@ assets/             logo, texturen, skybox
  dak door tot de omhullende rechthoek waar geen unit staat (bijv. een
  terras naast een kortere module), met een afgewerkte onderplaat in de
  kleur van het boeideel (`HouseModel.coverExtensions`).
- **Dak over de hele woning:** tabblad Dak › "Over hele woning": één
+- **Dak over de hele woning:** eigenschappen Woning › Dak › "Over hele woning": één
  dakvorm (zelfde invoer als per unit) over de omhullende rechthoek van alle
  units; een wolfsdak alleen bij een rechthoek (bij een L-/T-vorm zouden
  de wolfseinden kilkepers vragen, dan wordt het een zadeldak), bijv. een
@@ -209,7 +212,7 @@ assets/             logo, texturen, skybox
  (o.a. tegels), FIBO-wandpanelen (decor, tot een hoogte of tot het plafond),
  eigen verfkleur en een vals plafond op een vaste hoogte (alleen waar het
  dak hoger ligt; wandafwerking en binnenspots volgen). Laag in de
-  plattegrond (Beeld › Tonen: Ruimtes), label met netto m², in de structuur,
+  plattegrond (Lagen › Ruimtes), label met netto m², in de structuur,
  het rapport, de kosten (vals plafond, FIBO) en op de PDF-plattegrond met
  een ruimtestaat. Het zaadpunt hoort bij een unit en schuift mee.
 - **Inrichting** (`interior/fixture-model.js`): zwevend toilet (wandcloset
@@ -217,8 +220,8 @@ assets/             logo, texturen, skybox
  (douchegoot, glaswand, regendouche), keukenblok (spoelbak, hoge kast met
  koelkast en oven, vaatwasser, bovenkasten), kookeiland met inductieplaat,
  kledingkast, bed, eettafel met stoelen, bank met chaise longue, fauteuil,
-  salontafel, tv-meubel, boiler en wasmachine. Binnen › Inrichting: kies
+  salontafel, tv-meubel, boiler en wasmachine. Gereedschap Inrichting (I): kies
-  een stuk en klik in de plattegrond; slepen, bij een wand snapt de rug op
+  een stuk in de werkbalk en klik in de plattegrond; slepen, bij een wand snapt de rug op
  het wandvlak (Alt = vrij), D = draaien, Del = verwijderen. Per stuk maten
  en opties (front, plek spoelbak, glaswand links/rechts, ...). In 2D, 3D
  (afgewerkte fase), de PDF-plattegrond, de structuur en de kosten (groep
@@ -226,26 +229,38 @@ assets/             logo, texturen, skybox
  schuift mee.
 - **Verlichting:** boeideel-spots of gevellampen (per gevel verdeeld,
  override per wand) en binnenspots in een raster per unit.
- **Ribbon** (`core/ribbon.js`, vervangt de menubalk): Bestand · Start ·
+- **Indeling** (zelfde patroon als CAD/BIM-pakketten; elke functie op één plek):
-  Gevel · Dak · Binnen · Constructie · Verlichting · Rapport · Beeld · Extra,
+  bovenbalk met menu Bestand (nieuw, openen, opslaan, exporteren,
-  plus een gekleurd tabblad voor de selectie (unit, wandstuk, binnenwand of
+  projectgegevens, kosten & tijden) · Beeld · Help, de geopende ontwerpen als
-  naadwand) dat vanzelf opent. Velden staan in groepen naast elkaar, met
+  tabs en de knop Opslaan; links de structuur (groepen in-/uitklapbaar en
-  schuiven voor maten met een logisch bereik. Dubbelklik op een tabblad
+  onthouden; de groep met de selectie klapt vanzelf open); in het midden een werkbalk met
-  klapt de ribbon in. Plattegrond en 3D gebruiken de volle breedte; tabblad
+  gereedschap (Selecteren V, Binnenwand W, Ruimte R, Inrichting I, met de
-  Rapport toont het rapport (transport per unit, gewicht, afmetingen,
+  opties van het actieve gereedschap ernaast; Unit toevoegen) en weergave
-  kosten, hout, plaatwerk, met staafdiagrammen) in plaats van de plattegrond.
+  (Lagen, Omgeving, Doorsnede X, Render, Lopen L, Rapport 4, 2D + 3D / 2D /
- **3D:** schuif Bouwfase linksonder; Beeld › Tonen: Dak/Lampen; Beeld ›
+  3D met 1/2/3); rechts het eigenschappenpaneel: de selectie (unit,
-  Doorsnede (wanden afgesneden op een instelbare hoogte, schuif in de ribbon
+  wandstuk, binnenwand, ruimte, inrichting, elektra) met kruimelpad terug,
-  en onder de 3D, snede wit afgedekt), binnenzijde in een
+  of zonder selectie de woning (kerncijfers en inklapbare secties Gevel,
-  verfkleur (afgewerkte fase), omgeving Ontwerp/Dag/Nacht, Render met lampen
+  Dak, Binnen, Verlichting, Elektra, Constructie); onderin een statusbalk
-  als echte lichtbronnen.
+  met de hint van het gereedschap en meldingen. Wand- en vloer/dak-editor
  hebben dezelfde indeling (werkbalk boven, paneel met tabbladen en
  Resultaat rechts; binnen de woning met "← Woning" of Esc terug). Help ›
  Sneltoetsen (?) toont alle toetsen. Rapport toont transport per unit,
  gewicht, afmetingen, kosten, hout en plaatwerk in plaats van de
  plattegrond, als masonry (kaart in de kortste kolom, leesvolgorde blijft).
 - **3D en plattegrond:** één lagenmenu (Lagen in de werkbalk, met bouwfase
  als snelkeuze) voor 3D en plattegrond; plattegrond zoomt met het
  scrollwiel en de knoppen rechtsonder (F = passend), verschuiven met
  slepen; Doorsnede (wanden afgesneden op een instelbare hoogte, schuif in
  de werkbalk, snede wit afgedekt), binnenzijde in een verfkleur (afgewerkte
  fase), omgeving Ontwerp/Dag/Nacht, Render met lampen als echte
  lichtbronnen.
 - **Transport:** per unit buitenmaat (incl. gevelafwerking), hoogte en
  gewicht (vloer/wanden/dak) met een indicatieve breedteklasse.
 - **Uitvoer:** JSON opslaan/openen en een samenhangende PDF (aanzichten
  noord/oost/zuid/west als vlakke render met legenda afwerking, plattegrond,
  vloeren, wandstukken, binnenwanden, totalen).
- **CAD-export (DXF):** Bestand › Exporteren › CAD (DXF), ook in de ribbon
+- **CAD-export (DXF):** Bestand › Exporteren › CAD (DXF); los van
-  Woning › Uitvoer; los van Opslaan/Ctrl+S. DXF R12 (AC1009), opent in elk
+  Opslaan/Ctrl+S. DXF R12 (AC1009), opent in elk
  CAD-pakket (AutoCAD, BricsCAD, DraftSight, LibreCAD, …); DWG maakt het
  CAD-pakket zelf met Opslaan als (echte DWG schrijven vergt een GPL- of
  commerciële bibliotheek). Modelruimte 1:1 in mm: plattegrond met noord
@@ -281,10 +296,14 @@ assets/             logo, texturen, skybox
  (`HouseIfc` COLORS). X = oost, Y = noord,
  Z = 0 op peil; zuidwesthoek van de units = 0,0 (zelfde als de DXF).
 - **Render-export (OBJ):** Bestand › Exporteren › Render (OBJ), ook in Woning ›
-  Uitvoer. De volledige afgewerkte woning (laatste bouwfase, dak, dakrand,
+  Uitvoer. Voor een sfeerimpressie: alleen wat in de afgewerkte woning te zien
-  lampen, ruimtes, inrichting; los van de gekozen fase, doorsnede en
+  is (dak, dakrand, lampen, ruimtes, inrichting; los van de gekozen lagen,
-  weergave-opties; zonder logobord, grond en lucht) als ZIP met `.obj`, `.mtl`
+  doorsnede en weergave-opties; zonder buizen en dozen, binnenste vloerbalken,
-  en `textures/*.png` (rabat, steen, riet, tegels). Meters, Y omhoog (de
+  latten en isolatie achter de gevel, lichtkegels, logobord, grond en lucht)
  als ZIP met `.obj`, `.mtl`, `textures/*.png` (rabat, steen, riet, tegels) en
  `<naam>_lampen.py`: in Blender uitvoeren importeert de OBJ en zet elke lamp
  (gevellamp, dakrandspot, binnenspot) als echte spotlight met dezelfde plek,
  richting en kegel als in de app (`LightingModel.lightSources`). Meters, Y omhoog (de
  standaard OBJ-import van Blender zet dat goed: noord = +Y), oorsprong op
  maaiveld onder het midden. Kleuren omgerekend van sRGB naar lineair (de app
  heeft geen kleurbeheer, Blender wel), PBR via `Pr`/`Pm`/`d`/`Ke` (ruwheid,
@@ -340,7 +359,7 @@ hout.balk.38x235;Constructiehout vuren C24 38×235;€/m;4,91;Houthandel Y;;2026
  pendiktes via de plotstijl. Geen doorsnede en geen dakaanzicht. Eenheid
  staat niet in het bestand: in CAD op millimeters zetten (UNITS) als het
  pakket erom vraagt.
- OBJ: geen lichtbronnen (lampen alleen als gloeiend materiaal), geen
+- OBJ: lichtbronnen alleen via het meegeleverde Blender-script, geen
  reliëf-/normaalkaarten; glas als doorzichtig materiaal, in Blender eventueel
  op Glass BSDF zetten.
 - IFC: onderdelen zijn driehoeksnetten (niet parametrisch); geen
@@ -39,30 +39,6 @@
    }
    #app-container { display: flex; width: 100%; height: 100%; }
    #left-column {
      flex: 1;
      display: flex;
      flex-direction: column;
      height: 100%;
      min-height: 0;
      min-width: 0;
      border-right: 1px solid var(--border);
    }
    #right-column {
      flex: 1;
      display: flex;
      flex-direction: column;
      height: 100%;
      min-height: 0;
      min-width: 0;
    }
    #app-container.fullscreen-3d #left-column { display: none; }
    #app-container.fullscreen-2d #right-column { display: none; }
    #pane-2d-container {
      flex: 1;
      display: flex;
@@ -85,14 +61,6 @@
    .pane-2d-half { flex: 1; position: relative; min-width: 0; min-height: 0; background: var(--viewport-bg); }
    .pane-2d-half + .pane-2d-half { border-left: 1px solid var(--border); }
    #control-panel {
      height: 380px;
      background: var(--van-emous-ultra-light);
      border-top: 1px solid var(--border);
      display: flex;
      flex-direction: column;
    }
    .tab-bar {
      display: flex;
      background: var(--van-emous-blue);
@@ -148,39 +116,6 @@
    }
    .tab-content.active { display: block; }
    #pane-3d { flex: 1; position: relative; min-height: 0; background: var(--viewport-bg); }
    #specs-panel-3d {
      height: 380px;
      background: var(--van-emous-ultra-light);
      border-top: 1px solid var(--border);
      overflow-y: auto;
      padding: 15px 20px;
    }
    #specs-panel-3d .controls-grid { grid-template-columns: 1fr 1fr; }
    .toolbar-3d {
      position: absolute;
      top: 15px;
      right: 15px;
      z-index: 10;
      display: flex;
      gap: 8px;
    }
    .btn-3d-toggle {
      background: rgba(0, 0, 0, 0.75);
      border: 1px solid var(--primary-on-dark);
      color: var(--primary-on-dark);
      padding: 6px 12px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: bold;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      cursor: pointer;
    }
    .btn-3d-toggle.active { background: var(--primary); border-color: var(--primary); color: #fff; }
    .pane-label {
      position: absolute;
      top: 15px;
@@ -292,28 +227,6 @@
    .material-toggle-btn:hover:not(.active) { border-color: var(--primary); color: var(--primary); }
 html, body { height: 100%; }
 #tab-bar {
  height: 34px;
  background: var(--van-emous-ultra-light);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: stretch;
  overflow-x: auto;
 }
 .tab-item {
  display: flex; align-items: center; gap: 8px;
  padding: 0 12px; font-size: 12px; color: var(--text-muted);
  border-right: 1px solid var(--border-soft); border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap;
 }
 .tab-item:hover { color: var(--text); }
 .tab-item.active { background: var(--surface); color: var(--text); border-bottom: 2px solid var(--primary); }
 .tab-item .tab-close {
  color: var(--text-faint); font-size: 14px; line-height: 1; padding: 2px;
 }
 .tab-item .tab-close:hover { color: var(--danger); }
 body { display: flex; flex-direction: column; }
 #tab-bar { flex: none; }
 #workspace { width: 100vw; flex: 1; min-height: 0; position: relative; }
 #workspace-empty {
  height: 100%; display: flex; align-items: center; justify-content: center;
@@ -433,29 +346,6 @@ body { display: flex; flex-direction: column; }
 .new-option:hover:not(.disabled) { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
 .new-option.disabled { opacity: .4; cursor: not-allowed; }
 #floor-app { display: flex; width: 100%; height: 100%; }
 #floor-left-column {
  flex: 1; display: flex; flex-direction: column; height: 100%; min-height: 0; min-width: 0;
  border-right: 1px solid var(--border);
 }
 #floor-right-column { flex: 1; display: flex; flex-direction: column; height: 100%; min-height: 0; min-width: 0; }
 #floor-app.fullscreen-3d #floor-left-column { display: none; }
 #floor-app.fullscreen-2d #floor-right-column { display: none; }
 #floor-pane-2d-container { flex: 1; display: flex; flex-direction: column; min-height: 0; width: 100%; }
 #floor-control-panel { height: 380px; background: var(--van-emous-ultra-light); border-top: 1px solid var(--border); display: flex; flex-direction: column; }
 #floor-control-panel .tab-content { padding: 15px 20px; overflow-y: auto; flex: 1; display: none; }
 #floor-control-panel .tab-content.active { display: block; }
 #floor-pane-3d { flex: 1; position: relative; min-height: 0; background: var(--viewport-bg); }
 #floor-specs-panel-3d {
  height: 380px; background: var(--van-emous-ultra-light); border-top: 1px solid var(--border); overflow-y: auto; padding: 15px 20px;
 }
 #floor-specs-panel-3d .controls-grid { grid-template-columns: 1fr 1fr; }
 #house-app { display: flex; width: 100%; height: 100%; }
 #house-nav {
  width: 240px; flex: none; display: flex; flex-direction: column; gap: 6px;
  background: var(--van-emous-blue); border-right: 1px solid var(--border); padding: 10px 8px; overflow-y: auto;
 }
 .hn-title { font-size: 12px; font-weight: bold; color: var(--primary); text-transform: uppercase; letter-spacing: .8px; padding: 2px 6px 6px; }
 #house-nav-tree { display: flex; flex-direction: column; gap: 2px; }
 .hn-group { margin-top: 6px; }
@@ -475,50 +365,20 @@ body { display: flex; flex-direction: column; }
 .hn-item.disabled:hover { background: none; color: #9aa4b0; }
 .hn-actions { display: flex; gap: 6px; margin-top: 10px; }
 .hn-actions .io-btn { flex: 1; }
 #house-nav .io-status { margin: auto 0 0; padding: 6px; }
 #house-part-host { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; }
 #house-part-host > #app-container,
 #house-part-host > #floor-app,
 #house-part-host > #house-overview { flex: 1; min-height: 0; height: auto; }
 #house-overview { display: flex; width: 100%; }
 .ho-views { flex: 1; display: flex; min-width: 0; min-height: 0; }
 .ho-pane { flex: 1; position: relative; min-height: 0; min-width: 0; background: var(--viewport-bg); }
 #ho-pane-plan { border-right: 1px solid var(--border); }
@media (max-width: 1100px) {
  .ho-views { flex-direction: column; }
  #ho-pane-plan, .ho-report { border-right: none; border-bottom: 1px solid var(--border); }
 }
 #house-overview.fullscreen-3d #ho-pane-plan, #house-overview.fullscreen-3d .ho-report { display: none !important; }
 #house-overview.fullscreen-2d #ho-pane-3d { display: none; }
 .ho-report { display: none; flex: 1; min-width: 0; min-height: 0; overflow-y: auto; padding: 14px 18px 20px; background: var(--van-emous-ultra-light); border-right: 1px solid var(--border); }
 #house-overview.show-report .ho-report { display: block; }
 #house-overview.show-report #ho-pane-plan { display: none; }
 .ho-report .ui-spec-grid { grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); align-items: start; }
 .ho-report-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; }
 .ho-report-head h1 { margin: 0; font-size: 14px; }
 .ho-report-head span { font-size: 12px; color: var(--text-muted); }
 .ho-warn { position: absolute; top: 52px; left: 15px; right: 15px; z-index: 9; pointer-events: none; }
 .ho-warn .ui-warn { margin: 0 0 6px; max-width: 560px; }
 .ho-hint {
  position: absolute; left: 15px; bottom: 10px; font-size: 11px; color: #bbb;
  background: rgba(0, 0, 0, .6); padding: 3px 8px; border-radius: 4px; pointer-events: none;
 }
 .ho-prop-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
 .io-btn-danger { border-color: #e3b4b0; color: var(--danger); }
 .io-btn-danger:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-soft); }
 .control-group input:disabled { opacity: .5; cursor: not-allowed; background: var(--border-soft); }
 .view-filter { position: relative; }
 .vf-menu {
  position: absolute; right: 0; top: 100%; margin-top: 6px; min-width: 210px; display: none;
  background: rgba(0, 0, 0, 0.88); border: 1px solid #444; border-radius: 4px; padding: 8px 12px; z-index: 20;
 }
 .vf-menu.open { display: block; }
 .vf-item { display: flex; align-items: center; gap: 8px; color: #eee; font-size: 13px; padding: 4px 0; cursor: pointer; user-select: none; }
 .vf-item input { accent-color: var(--primary-on-dark); width: 15px; height: 15px; cursor: pointer; }
 .bi { line-height: 1; vertical-align: -0.125em; }
 .ui-section { margin-bottom: 14px; }
 .ui-section h2, .ui-spec-card h2 {
@@ -574,7 +434,6 @@ body { display: flex; flex-direction: column; }
 .ui-tab-page { display: none; }
 .ui-tab-page.active { display: block; }
 .ui-spec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
 .ui-spec-card { background: var(--surface); border: 1px solid var(--border-soft); border-radius: 6px; padding: 10px 12px; }
 .ui-spec-row { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; padding: 3px 0; border-bottom: 1px dashed var(--border-soft); }
 .ui-spec-row:last-child { border-bottom: none; }
@@ -583,12 +442,10 @@ body { display: flex; flex-direction: column; }
 .ui-spec-total { border-top: 1px solid var(--border); margin-top: 4px; padding-top: 2px; }
 .ui-spec-total .ui-spec-val { color: var(--primary); }
 .btn-3d-toggle { display: inline-flex; align-items: center; gap: 6px; }
 .hn-item .bi { margin-right: 6px; color: var(--text-muted); }
 .hn-item.active .bi, .hn-item:hover .bi { color: var(--primary); }
 .hn-label { display: inline-flex; align-items: center; }
 .render-only #specs-panel-3d, .render-only #floor-specs-panel-3d { display: none; }
 .control-group { min-height: 28px; margin-bottom: 3px; gap: 10px; }
 .control-group label { font-size: 12.5px; color: var(--text); }
@@ -606,9 +463,6 @@ h1 { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight:
 .hn-title { display: flex; align-items: center; gap: 6px; }
 .file-protocol-warning { position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 9000; max-width: 640px; box-shadow: 0 8px 20px rgba(33,33,33,.2); }
 .file-protocol-warning code { background: rgba(0,0,0,.06); padding: 0 4px; border-radius: 3px; }
 .vf-option { gap: 9px; }
 .vf-option.active { color: var(--primary-on-dark); font-weight: 600; }
 .vf-menu .vf-option:hover { color: var(--primary-on-dark); }
 .hs-stone-preview { display: block; width: 128px; height: auto; margin: 4px 0 8px; border: 1px solid var(--border, #ccc); border-radius: 3px; }
@@ -635,21 +489,13 @@ h1 { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight:
 .ui-range input[type=number] { width: 84px; }
 .ui-swatch { height: 14px; border-radius: 3px; border: 1px solid var(--border); margin: 2px 0 6px; }
-.stage-bar {
+.plan-zoom { position: absolute; right: 12px; bottom: 12px; z-index: 10; display: flex; flex-direction: column; gap: 4px; }
-  position: absolute; left: 15px; bottom: 14px; z-index: 10; min-width: 300px; max-width: calc(100% - 30px);
+.plan-zoom button {
-  background: rgba(0, 0, 0, 0.75); border: 1px solid #444; border-radius: 6px; padding: 7px 12px 6px; color: #eee; font-size: 12px;
+  width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; cursor: pointer;
  background: rgba(0, 0, 0, 0.75); border: 1px solid #555; border-radius: 4px; color: #eee; font-size: 14px;
 }
-.stage-row, .stage-extra { display: flex; align-items: center; gap: 10px; }
+.plan-zoom button:hover { border-color: var(--primary-on-dark); color: var(--primary-on-dark); }
-.stage-title { display: inline-flex; align-items: center; gap: 6px; color: var(--primary-on-dark); font-weight: 600; white-space: nowrap; }
+.plan-zoom-val { text-align: center; font-size: 10px; color: #aaa; }
 .stage-range { flex: 1; min-width: 90px; accent-color: var(--primary-on-dark); }
 .stage-name { min-width: 84px; font-weight: 600; white-space: nowrap; }
 .stage-track { flex: 1; display: flex; flex-direction: column; min-width: 120px; }
 .stage-track .stage-range { width: 100%; margin: 0; }
 .stage-ticks { display: flex; justify-content: space-between; padding: 0 3px; font-size: 10px; color: #888; }
 .stage-ticks span { cursor: pointer; padding: 0 3px; }
 .stage-ticks span.on { color: var(--primary-on-dark); }
 .stage-extra { display: none; margin-top: 6px; padding-top: 6px; border-top: 1px solid #444; }
 .stage-extra.show { display: flex; }
 .viz { --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --track: #eef1f5; }
 .viz-legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 11px; color: var(--text-muted); margin: -2px 0 8px; }
@@ -671,72 +517,316 @@ h1 { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight:
 .viz-val { font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--text); text-align: right; white-space: nowrap; }
 .viz-note { font-size: 11px; color: var(--text-faint); line-height: 1.45; margin-top: 6px; }
-#ribbon { flex: none; background: var(--van-emous-blue); border-bottom: 1px solid var(--border); position: relative; z-index: 100; user-select: none; }
+/* ===== Shell: bovenbalk (menu + documenten), editorindeling, werkbalk, eigenschappen, statusbalk ===== */
-.rb-top { display: flex; align-items: flex-end; height: 34px; padding: 0 8px; }
+:root { --panel-w: 340px; --nav-w: 230px; }
-.rb-brand { display: flex; align-items: center; height: 100%; padding: 0 14px 0 4px; font-weight: 700; color: var(--primary); letter-spacing: .5px; }
+body { display: flex; flex-direction: column; }
 .rb-tabs { display: flex; gap: 2px; height: 100%; align-items: flex-end; overflow-x: auto; scrollbar-width: none; }
 .rb-tab {
  display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 14px; border: 1px solid transparent; border-bottom: none;
  border-radius: 5px 5px 0 0; background: none; font: inherit; font-size: 12.5px; color: var(--nav-link-color); cursor: pointer; white-space: nowrap;
 }
 .rb-tab:hover { background: rgba(255, 255, 255, .55); color: var(--primary); }
 .rb-tab.active { background: var(--van-emous-ultra-light); border-color: var(--border); color: var(--primary); font-weight: 600; margin-bottom: -1px; height: 29px; }
 .rb-tab.rb-ctx { color: #fff; background: var(--primary); margin-left: 10px; }
 .rb-tab.rb-ctx:hover { background: var(--primary-hover); color: #fff; }
 .rb-tab.rb-ctx.active { background: var(--van-emous-ultra-light); color: var(--primary); box-shadow: inset 0 3px 0 var(--primary); }
 .rb-right { margin-left: auto; display: flex; align-items: center; height: 100%; gap: 10px; font-size: 11px; color: var(--text-muted); padding-left: 12px; }
 .rb-body {
  position: relative; display: flex; align-items: stretch; height: 104px; padding: 6px 40px 4px 6px;
  background: var(--van-emous-ultra-light); border-top: 1px solid var(--border); overflow-x: auto; overflow-y: hidden;
 }
 #ribbon.rb-collapsed .rb-body { display: none; }
 .rb-collapse { position: absolute; right: 8px; bottom: 6px; border: none; background: none; color: var(--text-faint); cursor: pointer; padding: 2px 4px; }
 .rb-collapse:hover { color: var(--primary); }
 .rb-group { display: flex; flex-direction: column; flex: none; padding: 0 12px; border-right: 1px solid var(--border-soft); }
 .rb-group:last-of-type { border-right: none; }
 .rb-group-body { flex: 1; display: grid; grid-auto-flow: column; grid-template-rows: repeat(3, 26px); column-gap: 16px; align-items: center; justify-content: start; }
 .rb-group-label { text-align: center; font-size: 10.5px; color: var(--text-faint); padding-top: 2px; white-space: nowrap; }
 .rb-btn {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid transparent; background: none; border-radius: 4px;
  font: inherit; font-size: 12px; color: var(--text); cursor: pointer; white-space: nowrap;
 }
 .rb-btn:hover:not(:disabled) { background: var(--primary-soft); border-color: rgba(185, 89, 19, .25); color: var(--primary); }
 .rb-btn:disabled { color: #a9b2bd; cursor: default; }
 .rb-btn.active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
 .rb-btn.rb-danger:hover:not(:disabled) { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
 .rb-small { height: 24px; padding: 0 7px; }
 .rb-small .bi { font-size: 14px; color: var(--primary); }
 .rb-btn:disabled .bi { color: inherit; }
 .rb-big { grid-row: span 3; flex-direction: column; justify-content: center; gap: 4px; min-width: 64px; height: 76px; padding: 4px 8px; text-align: center; }
 .rb-big .bi { font-size: 24px; color: var(--primary); }
 .rb-big span { white-space: normal; max-width: 86px; line-height: 1.2; }
 .rb-kv { display: flex; justify-content: space-between; gap: 12px; font-size: 11.5px; color: var(--text-muted); min-width: 150px; }
 .rb-kv b { color: var(--text); font-variant-numeric: tabular-nums; }
 .rb-kv small { font-weight: normal; color: var(--text-faint); margin-left: 2px; }
 .rb-note { grid-row: span 3; max-width: 260px; font-size: 11px; line-height: 1.4; color: var(--text-muted); white-space: normal; align-self: center; }
 .rb-note.rb-warn { color: var(--danger); }
 .rb-group .ui-field { min-height: 0; height: 26px; gap: 8px; }
 .rb-group .ui-field label { font-size: 11.5px; color: var(--text-muted); white-space: nowrap; }
 .rb-group .ui-control input[type=number] { width: 70px; padding: 2px 5px; font-size: 12px; }
 .rb-group .ui-control select, .rb-group .ui-control input[type=text] { width: 132px; padding: 2px 4px; font-size: 12px; }
 .rb-group .ui-control input[type=color] { width: 46px; height: 22px; padding: 0; border: 1px solid var(--border); border-radius: 3px; background: none; }
 .rb-group .ui-unit { width: 20px; margin-left: 3px; font-size: 10.5px; }
 .rb-group .ui-switch { margin-right: 0; }
 .rb-group .ui-field-range { flex-wrap: nowrap; padding: 0; }
 .rb-group .ui-field-range label { flex: none; }
 .rb-group .ui-range { flex: none; gap: 6px; }
 .rb-group .ui-range input[type=range] { width: 96px; flex: none; }
 .rb-group .ui-range input[type=number] { width: 62px; }
 .rb-thumb { width: 26px; height: 26px; border-radius: 3px; border: 1px solid var(--border); object-fit: cover; display: block; }
 .rb-swatch { width: 26px; height: 22px; border-radius: 3px; border: 1px solid var(--border); }
 .rb-seg { display: inline-flex; border: 1px solid var(--border); border-radius: 4px; overflow: hidden; height: 24px; }
 .rb-seg .rb-btn { border-radius: 0; border: none; border-right: 1px solid var(--border-soft); height: 22px; padding: 0 8px; }
 .rb-seg .rb-btn:last-child { border-right: none; }
 .rb-seg .rb-btn.active { background: var(--primary); color: #fff; }
 .rb-seg .rb-btn.active .bi { color: #fff; }
 .rb-check { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text); cursor: pointer; white-space: nowrap; }
 .rb-check input { accent-color: var(--primary); }
-.rb-pair { display: flex; align-items: center; gap: 6px; }
+#topbar {
-.rb-cols { grid-row: span 3; display: grid; grid-auto-flow: column; grid-template-rows: repeat(3, 26px); column-gap: 18px; align-items: center; }
+  flex: none; height: 40px; display: flex; align-items: stretch; gap: 4px; padding: 0 10px 0 4px;
-.rb-cols:empty { display: none; }
+  background: var(--van-emous-blue); border-bottom: 1px solid var(--border); position: relative; z-index: 200; user-select: none;
 }
 .tb-brand { display: flex; align-items: center; padding: 0 12px 0 8px; font-weight: 700; color: var(--primary); letter-spacing: .5px; }
 #menubar { display: flex; align-items: center; }
 .mb-menu { position: relative; height: 100%; display: flex; align-items: center; }
 .mb-top { height: 28px; padding: 0 10px; border: none; background: none; border-radius: 4px; font: inherit; font-size: 13px; color: var(--text); cursor: pointer; }
 .mb-top:hover, .mb-menu.open .mb-top { background: rgba(255, 255, 255, .7); color: var(--primary); }
 .mb-drop {
  display: none; position: absolute; top: calc(100% - 3px); left: 0; min-width: 260px; padding: 4px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px; box-shadow: 0 10px 28px rgba(33, 33, 33, .18); z-index: 300;
 }
 .mb-menu.open .mb-drop { display: block; }
 .mb-item {
  display: grid; grid-template-columns: 22px 1fr auto; align-items: center; gap: 6px; width: 100%; padding: 6px 8px;
  border: none; background: none; border-radius: 4px; font: inherit; font-size: 13px; color: var(--text); text-align: left; cursor: pointer;
 }
 .mb-item:hover:not(:disabled) { background: var(--primary-soft); color: var(--primary); }
 .mb-item:disabled { color: var(--text-faint); cursor: default; }
 .mb-ico .bi { color: var(--text-muted); }
 .mb-item:hover:not(:disabled) .mb-ico .bi, .mb-item.checked .mb-ico .bi { color: var(--primary); }
 .mb-item:disabled .mb-ico .bi { color: inherit; }
 .mb-keys { font-size: 11.5px; color: var(--text-faint); padding-left: 18px; white-space: nowrap; }
 .mb-sep { height: 1px; background: var(--border-soft); margin: 4px 6px; }
 .mb-head { font-size: 10.5px; text-transform: uppercase; letter-spacing: .6px; color: var(--text-faint); padding: 6px 8px 2px 36px; }
 #doc-tabs { display: flex; align-items: flex-end; gap: 2px; flex: 1; min-width: 0; margin-left: 14px; overflow: hidden; }
 .doc-tab {
  display: flex; align-items: center; gap: 4px; flex: 0 1 auto; min-width: 70px; max-width: 220px; height: 32px; padding: 0 4px 0 12px;
  border: 1px solid transparent; border-bottom: none; border-radius: 6px 6px 0 0; font-size: 12.5px; color: var(--text-muted); cursor: pointer;
 }
 .doc-tab:hover { background: rgba(255, 255, 255, .5); color: var(--text); }
 .doc-tab.active { background: var(--surface); border-color: var(--border); color: var(--text); font-weight: 600; height: 33px; margin-bottom: -1px; }
 .doc-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .doc-close { width: 20px; height: 20px; flex: none; border: none; background: none; border-radius: 4px; color: var(--text-faint); font-size: 15px; line-height: 1; cursor: pointer; }
 .doc-close:hover { background: var(--danger-soft); color: var(--danger); }
 .top-right { display: flex; align-items: center; gap: 12px; margin-left: auto; padding-left: 12px; font-size: 11px; color: var(--text-muted); white-space: nowrap; }
 .top-save {
  display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 12px; border: 1px solid var(--primary); border-radius: 4px;
  background: var(--primary); color: #fff; font: inherit; font-size: 12.5px; font-weight: 600; cursor: pointer;
 }
 .top-save:hover:not(:disabled) { background: var(--primary-hover); }
 .top-save:disabled { opacity: .45; cursor: default; }
 /* Editoren: [werkbalk + viewports] | paneel rechts. Dezelfde indeling voor woning, wand en vloer/dak. */
 .ed-app, #house-overview { display: flex; width: 100%; height: 100%; min-height: 0; }
 .ed-main { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; }
 .ed-views, .ho-views { flex: 1; min-height: 0; min-width: 0; display: flex; }
 #left-column, #right-column, #floor-left-column, #floor-right-column { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; }
 #left-column, #floor-left-column { border-right: 1px solid var(--border); }
 #floor-pane-2d-container { flex: 1; display: flex; flex-direction: column; min-height: 0; width: 100%; }
 #pane-3d, #floor-pane-3d { flex: 1; position: relative; min-height: 0; background: var(--viewport-bg); }
 .ed-app.fullscreen-3d #left-column, .ed-app.fullscreen-3d #floor-left-column { display: none; }
 .ed-app.fullscreen-2d #right-column, .ed-app.fullscreen-2d #floor-right-column { display: none; }
 .ed-panel { width: var(--panel-w); flex: none; min-height: 0; display: flex; flex-direction: column; background: var(--van-emous-ultra-light); border-left: 1px solid var(--border); }
 .ed-panel .tab-content { padding: 12px 14px; }
 .ed-panel .controls-grid { grid-template-columns: 1fr; gap: 4px; }
 .ed-panel .tab-btn { padding: 9px 4px; font-size: 12px; gap: 5px; }
 .ed-panel .io-toolbar:has(.io-status:empty) { display: none; }
 #specs-panel-3d, #floor-specs-panel-3d { padding: 0; }
 body.panels-hidden .ed-panel, body.panels-hidden #house-nav, body.panels-hidden .statusbar { display: none; }
 #house-app { display: flex; flex-direction: column; width: 100%; height: 100%; }
 .house-body { flex: 1; min-height: 0; display: flex; }
 #house-nav {
  width: var(--nav-w); flex: none; display: flex; flex-direction: column; gap: 6px; padding: 10px 8px; overflow-y: auto;
  background: var(--van-emous-blue); border-right: 1px solid var(--border);
 }
 #house-part-host { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; }
 #house-part-host > .ed-app, #house-part-host > #house-overview { flex: 1; min-height: 0; height: auto; }
 .ho-pane { flex: 1; position: relative; min-height: 0; min-width: 0; background: var(--viewport-bg); }
 #ho-pane-plan { border-right: 1px solid var(--border); }
 #house-overview.fullscreen-3d #ho-pane-plan, #house-overview.fullscreen-3d .ho-report { display: none !important; }
 #house-overview.fullscreen-2d #ho-pane-3d { display: none; }
@media (max-width: 1250px) {
  :root { --panel-w: 300px; --nav-w: 190px; }
  .ho-views, .ed-views { flex-direction: column; }
  #ho-pane-plan, .ho-report, #left-column, #floor-left-column { border-right: none; border-bottom: 1px solid var(--border); }
 }
 .statusbar {
  flex: none; height: 24px; display: flex; align-items: center; gap: 16px; padding: 0 12px;
  background: var(--van-emous-blue); border-top: 1px solid var(--border); font-size: 11.5px; color: var(--text-muted);
 }
 .sb-hint { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .statusbar .io-status { white-space: nowrap; }
 /* Werkbalk boven de viewports */
 .ed-toolbar {
  flex: none; display: flex; flex-wrap: wrap; align-items: center; gap: 4px; min-height: 40px; padding: 4px 8px;
  background: var(--surface); border-bottom: 1px solid var(--border); position: relative; z-index: 20; container-type: inline-size;
 }
 .tb-group { display: flex; align-items: center; gap: 2px; }
 .tb-spacer { flex: 1; }
 .tb-sep { width: 1px; height: 22px; background: var(--border-soft); margin: 0 6px; }
 .tb-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 9px; border: 1px solid transparent; border-radius: 5px;
  background: none; font: inherit; font-size: 12.5px; color: var(--text); cursor: pointer; white-space: nowrap; position: relative;
 }
 .tb-btn .bi { font-size: 15px; color: var(--text-muted); }
 .tb-btn .tb-caret { font-size: 10px; }
 .tb-btn:hover { background: var(--primary-soft); color: var(--primary); }
 .tb-btn:hover .bi, .tb-btn.active .bi, .tb-btn.open .bi { color: var(--primary); }
 .tb-btn.active, .tb-btn.open { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
 .tb-btn.flag::after { content: ''; position: absolute; top: 4px; right: 4px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
 .tb-title { font-size: 12.5px; font-weight: 600; padding: 0 6px; white-space: nowrap; }
 .tb-seg { display: inline-flex; border: 1px solid var(--border); border-radius: 5px; overflow: hidden; }
 .tb-seg .tb-btn { height: 28px; padding: 0 8px; border: none; border-radius: 0; }
 .tb-seg .tb-btn + .tb-btn { border-left: 1px solid var(--border-soft); }
 .tb-seg .tb-btn.active { background: var(--primary); color: #fff; }
 .tb-seg .tb-btn.active .bi { color: #fff; }
 .tb-options:empty { display: none; }
 .tb-opt { display: inline-flex; align-items: center; gap: 6px; margin-left: 4px; padding-left: 10px; border-left: 1px solid var(--border-soft); font-size: 12px; color: var(--text-muted); }
 .tb-opt select { height: 28px; max-width: 220px; padding: 0 6px; border: 1px solid var(--border); border-radius: 4px; background: var(--surface); font: inherit; font-size: 12.5px; color: var(--text); }
 .tb-range { display: none; align-items: center; gap: 6px; margin-left: 2px; font-size: 11.5px; color: var(--text-muted); font-variant-numeric: tabular-nums; }
 .tb-section.on .tb-range { display: inline-flex; }
 .tb-range input { width: 110px; accent-color: var(--primary); }
 #ho-section-val { min-width: 54px; }
 /* Smalle werkbalk: eerst de weergaveknoppen zonder tekst, daarna ook het gereedschap (titel blijft als tooltip). */
@container (max-width: 1240px) { .tb-view .tb-btn > span, .tb-section .tb-btn > span, [data-tb="report"] > span { display: none; } }
@container (max-width: 860px) { .tb-btn > span, .tb-opt > span { display: none; } }
 .tb-pop-wrap { position: relative; }
 .tb-pop {
  display: none; position: absolute; top: calc(100% + 6px); right: 0; min-width: 170px; padding: 6px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px; box-shadow: 0 10px 28px rgba(33, 33, 33, .18); z-index: 50;
 }
 .tb-pop.open { display: block; }
 .pop-option {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 6px 8px; border: none; border-radius: 4px; background: none;
  font: inherit; font-size: 12.5px; color: var(--text); text-align: left; cursor: pointer;
 }
 .pop-option:hover { background: var(--primary-soft); color: var(--primary); }
 .pop-option.active { color: var(--primary); font-weight: 600; }
 .pop-layers { width: max-content; max-width: min(440px, 90vw); padding: 10px 12px; }
 .pop-row { display: flex; gap: 8px; margin-bottom: 6px; }
 .pop-phase { flex: 1; height: 28px; padding: 0 6px; border: 1px solid var(--border); border-radius: 4px; background: var(--surface); font: inherit; font-size: 12.5px; }
 .pop-groups { display: grid; grid-template-columns: repeat(2, minmax(170px, 1fr)); gap: 0 18px; }
 .pop-head { margin: 6px 0 2px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .6px; color: var(--text-faint); }
 .pop-check { display: flex; align-items: center; gap: 7px; padding: 3px 2px; font-size: 12.5px; cursor: pointer; white-space: nowrap; }
 .pop-check:hover { color: var(--primary); }
 .pop-check input { margin: 0; accent-color: var(--primary); }
 .pop-check .bi { width: 14px; color: var(--text-muted); }
 /* Eigenschappenpaneel */
 .inspector { overflow-y: auto; background: var(--surface); }
 .ins-head { position: sticky; top: 0; z-index: 2; padding: 12px 14px 10px; background: var(--surface); border-bottom: 1px solid var(--border-soft); }
 .ins-crumbs { display: flex; align-items: center; gap: 4px; margin-bottom: 4px; font-size: 11.5px; color: var(--text-faint); }
 .ins-crumbs .bi { font-size: 9px; }
 .ins-crumb { padding: 0; border: none; background: none; font: inherit; color: var(--primary); cursor: pointer; }
 .ins-crumb:hover { text-decoration: underline; }
 .ins-head h2 { display: flex; align-items: center; gap: 8px; margin: 0; font-size: 15px; font-weight: 600; color: var(--text); }
 .ins-head h2 .bi { color: var(--primary); }
 .ins-sub { margin-top: 2px; font-size: 11.5px; color: var(--text-muted); }
 .ins-top { padding: 8px 14px 10px; border-bottom: 1px solid var(--border-soft); }
 .ins-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
 .ins-summary .ins-wide { grid-column: 1 / -1; }
 .ins-kv { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; border-bottom: 1px dashed var(--border-soft); font-size: 12px; color: var(--text-muted); }
 .ins-kv b { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; }
 .ins-kv small { margin-left: 2px; font-weight: normal; color: var(--text-faint); }
 .ins-section { border-bottom: 1px solid var(--border-soft); }
 .ins-section-head {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px; border: none; background: none;
  font: inherit; font-size: 13px; font-weight: 600; color: var(--text); text-align: left; cursor: pointer;
 }
 .ins-section-head:hover { background: var(--van-emous-ultra-light); color: var(--primary); }
 .ins-section-head > .bi:first-child { width: 16px; color: var(--primary); }
 .ins-section-head .bi-chevron-down { margin-left: auto; font-size: 11px; color: var(--text-faint); transition: transform .15s; }
 .ins-section.open .ins-section-head .bi-chevron-down { transform: rotate(180deg); }
 .ins-collapsible:not(.open) .ins-section-body { display: none; }
 .ins-section-body { padding: 2px 14px 12px; }
 .ins-group + .ins-group { margin-top: 8px; }
 .ins-group h3 { margin: 8px 0 4px; font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .6px; color: var(--text-faint); }
 .ins-group-body { display: flex; flex-direction: column; gap: 2px; }
 .ins-btn {
  display: inline-flex; align-items: center; gap: 7px; align-self: flex-start; margin: 3px 0; padding: 5px 11px;
  border: 1px solid var(--border); border-radius: 4px; background: var(--surface); font: inherit; font-size: 12.5px; color: var(--text); cursor: pointer;
 }
 .ins-btn .bi { color: var(--primary); }
 .ins-btn:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
 .ins-btn.active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
 .ins-btn:disabled { opacity: .5; cursor: default; }
 .ins-btn.ins-danger { color: var(--danger); border-color: #e3b4b0; }
 .ins-btn.ins-danger .bi { color: var(--danger); }
 .ins-btn.ins-danger:hover { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
 .ins-group-body > .ins-btn + .ins-btn { margin-top: 0; }
 .ins-note { margin: 4px 0; font-size: 11.5px; line-height: 1.45; color: var(--text-muted); }
 .ins-note.ins-warn { padding: 6px 8px; border-radius: 4px; background: var(--danger-soft); color: var(--danger); }
 /* Staal of foto in de eenheid-kolom, zodat het veld uitlijnt met de rest. */
 .ins-pair { position: relative; }
 .ins-pair > .ins-thumb, .ins-pair > .ins-swatch { position: absolute; right: 0; top: 50%; transform: translateY(-50%); }
 .ins-thumb { width: 26px; height: 26px; display: block; border: 1px solid var(--border); border-radius: 3px; object-fit: cover; }
 .ins-swatch { width: 26px; height: 22px; border: 1px solid var(--border); border-radius: 3px; }
 .ins-check { display: flex; align-items: center; gap: 7px; padding: 3px 0; font-size: 12.5px; cursor: pointer; }
 .ins-check input { margin: 0; accent-color: var(--primary); }
 .ins-cols { display: flex; flex-direction: column; }
 .ins-cols:empty { display: none; }
 .inspector .ui-field { min-height: 30px; }
 .inspector .ui-control input[type=number] { width: 96px; }
 .inspector .ui-control select, .inspector .ui-control input[type=text] { width: 150px; }
 .inspector .ui-control input[type=color] { width: 46px; height: 24px; padding: 0; border: 1px solid var(--border); border-radius: 3px; background: none; }
 .inspector .ui-switch { margin-right: 0; }
 .inspector .ui-range input[type=number] { width: 80px; }
 /* Dialogen */
 .dlg-overlay { position: fixed; inset: 0; z-index: 500; display: none; align-items: center; justify-content: center; background: rgba(33, 33, 33, .45); }
 .dlg-overlay.open { display: flex; }
 .dlg {
  display: flex; flex-direction: column; width: 780px; max-width: 94%; max-height: 88vh;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 12px 30px rgba(33, 33, 33, .2);
 }
 .dlg-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px 8px; }
 .dlg-head h2 { margin: 0; font-size: 15px; color: var(--primary); }
 .dlg-x { border: none; background: none; font-size: 20px; line-height: 1; color: var(--text-faint); cursor: pointer; }
 .dlg-x:hover { color: var(--danger); }
 .keys-body { overflow-y: auto; padding: 4px 20px 18px; columns: 2 300px; column-gap: 28px; }
 .keys-body section { break-inside: avoid; margin-bottom: 14px; }
 .keys-body h3 { margin: 0 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .6px; color: var(--text-faint); }
 .keys-row { display: flex; justify-content: space-between; gap: 12px; padding: 3px 0; border-bottom: 1px dashed var(--border-soft); font-size: 12.5px; }
 .keys-row span:last-child { color: var(--text-muted); text-align: right; }
 kbd {
  display: inline-block; min-width: 20px; padding: 1px 6px; border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 4px;
  background: var(--van-emous-ultra-light); font: 11.5px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--text); text-align: center;
 }
 #new-modal { max-width: 92vw; }
 .new-options { flex-wrap: wrap; max-width: 640px; }
 .keys-mouse { font-weight: 600; color: var(--text); }
 #house-nav { overflow-x: hidden; }
 .hn-item { min-width: 0; }
 .hn-label { display: block; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .hn-meta { flex: none; max-width: 45%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 /* Structuur: inklapbare groepen */
 .hn-item { align-items: center; }
 .hn-item .hn-label { flex: 1; }
 .hn-group:not(.open) .hn-children { display: none; }
 .hn-head { cursor: pointer; }
 .hn-head:hover { color: var(--primary); background: rgba(255, 255, 255, .6); }
 .hn-toggle {
  flex: none; width: 18px; height: 18px; margin: 0 2px 0 -4px; padding: 0; display: inline-flex; align-items: center; justify-content: center;
  border: none; border-radius: 3px; background: none; color: var(--text-faint); cursor: pointer;
 }
 .hn-toggle .bi { margin: 0 !important; font-size: 10px; color: inherit !important; transition: transform .15s; }
 .hn-group.open > .hn-item .hn-toggle .bi { transform: rotate(90deg); }
 .hn-toggle:hover { background: rgba(255, 255, 255, .8); color: var(--primary); }
 .hn-sub { padding-left: 30px; }
 /* Masonry: kaarten in de kortste kolom (leesvolgorde blijft links → rechts) */
 .ui-masonry { display: flex; align-items: flex-start; gap: 12px; }
 .ui-masonry-col { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 12px; }
 /* ===== Gelijktrekken oude onderdelen met de nieuwe stijl ===== */
 .io-btn { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; font-family: inherit; font-size: 12px; }
 .ui-btn.ui-btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
 /* Viewportlabels: herkenbaar maar niet dominant */
 .pane-label {
  top: 10px; left: 10px; padding: 3px 8px; border: none; border-radius: 4px; background: rgba(0, 0, 0, .55);
  font-size: 11px; font-weight: 600; letter-spacing: .8px; color: #c9ced6;
 }
 .ho-warn { top: 40px; left: 10px; right: 10px; }
 /* Eigenschappenpaneel: getal naast schuif lijnt uit met gewone getalvelden; bredere keuzelijsten */
 .inspector .ui-range { gap: 0; }
 .inspector .ui-range input[type=range] { margin-right: 10px; }
 .inspector .ui-range input[type=number], .inspector .ui-control input[type=number] { width: 96px; }
 .inspector .ui-control select, .inspector .ui-control input[type=text] { width: 170px; }
 .inspector .ui-field label { flex: 1; min-width: 0; }
 /* Rapport- en resultaatkaarten: lange waarde schuift onder het label i.p.v. het label te pletten */
 .ui-spec-row { flex-wrap: wrap; }
 .ui-spec-val { margin-left: auto; }
 /* Wand-/vloerpaneel: koppen, velden en knoppen zoals het eigenschappenpaneel */
 .ed-panel h1 { margin: 12px 0 4px; font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .6px; color: var(--text-faint); }
 .ed-panel h1 .bi { display: none; }
 .ed-panel .tab-content > :first-child h1:first-child, .ed-panel .controls-grid > div:first-child > h1:first-child { margin-top: 2px; }
 .ed-panel .spec-section h1 { margin: 0 0 6px; font-size: 12px; color: var(--primary); letter-spacing: .6px; }
 .ed-panel .spec-section h1 .bi { display: inline; }
 .ed-panel .divider { border: none; margin: 4px 0; }
 .ed-panel .control-group label { flex: 1; min-width: 0; line-height: 1.3; }
 .ed-panel .control-group > div { display: flex; align-items: center; flex: none; white-space: nowrap; }
 .ed-panel .control-group .unit { display: inline-block; width: 22px; margin-left: 3px; }
 .ed-panel .control-group > div > select:last-child, .ed-panel .control-group > div > input:last-child { margin-right: 25px; }
 .ed-panel .control-group .ui-switch { margin-right: 25px; }
 .ed-panel .control-group input[type=number], .ed-panel .control-group input[type=text], .ed-panel .control-group select { width: 110px; }
 .ed-panel .material-info { font-size: 11.5px; }
 .material-toggle-group { flex-wrap: wrap; }
 .material-toggle-btn {
  flex: 1 1 auto; min-width: 0; padding: 6px 10px; border-radius: 4px; text-transform: none; letter-spacing: 0;
  font-family: inherit; font-size: 12.5px; font-weight: 500;
 }
 .material-toggle-btn:disabled { opacity: .55; cursor: not-allowed; }
 .add-opening-btn {
  width: 100%; justify-content: center; padding: 7px 10px; background: var(--surface); border: 1px dashed var(--border);
  color: var(--text); font-weight: 500; font-family: inherit;
 }
 .add-opening-btn .bi { color: var(--primary); }
 .add-opening-btn:hover { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }
 .opening-card-title { text-transform: none; letter-spacing: 0; font-size: 13px; color: var(--text); }
 .opening-remove-btn { border-color: transparent; color: var(--text-faint); }
 .opening-remove-btn:hover { border-color: var(--danger); color: var(--danger); }
 #cost-settings-modal .cs-row input, #cost-settings-modal .cs-row select {
  padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; background: var(--surface); font: inherit; font-size: 12.5px; color: var(--text);
 }
 #cost-settings-modal .cs-row input:focus, #cost-settings-modal .cs-row select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 2px var(--primary-soft); }
 #cost-settings-modal .cs-row input:disabled, #cost-settings-modal .cs-row input[readonly] { background: var(--border-soft); }
@@ -22,15 +22,23 @@
    <div class="splash-version"><span class="splash-name">Tectum</span> &mdash; Versie <span class="app-version-number">0.0.0</span></div>
  </div>
-  <header id="ribbon">
+  <header id="topbar">
-    <div class="rb-top">
+    <div class="tb-brand"><span class="splash-name">Tectum</span></div>
-      <div class="rb-brand"><span class="splash-name">Tectum</span></div>
+    <nav id="menubar" aria-label="Menu"></nav>
-      <div class="rb-tabs" role="tablist"></div>
+    <div id="doc-tabs" role="tablist" aria-label="Geopende ontwerpen"></div>
-      <div class="rb-right"><span class="app-version-slot"></span></div>
+    <div class="top-right">
      <button type="button" id="top-save" class="top-save" title="Opslaan als JSON + PDF (Ctrl+S)"><i class="bi bi-save"></i><span>Opslaan</span></button>
      <span class="app-version-slot"></span>
    </div>
    <div class="rb-body"></div>
  </header>
  <div id="keys-overlay" class="dlg-overlay">
    <div class="dlg" role="dialog" aria-labelledby="keys-title">
      <div class="dlg-head"><h2 id="keys-title">Sneltoetsen en bediening</h2><button type="button" class="dlg-x" data-close>&times;</button></div>
      <div class="keys-body" id="keys-body"></div>
    </div>
  </div>
  <div id="about-overlay">
    <div id="about-modal">
      <img class="about-logo" src="assets/logo.svg" alt="Van Emous Mantelzorgwoningen">
@@ -49,7 +57,7 @@
  <div id="new-overlay">
    <div id="new-modal">
-      <h2>Nieuw</h2>
+      <h2>Nieuw ontwerp</h2>
      <div class="new-options">
        <button class="new-option" data-kind="woning" data-template="single">
          <svg viewBox="0 0 48 48"><rect x="8" y="14" width="32" height="20" fill="none" stroke="currentColor" stroke-width="2"/><line x1="8" y1="24" x2="40" y2="24" stroke="currentColor" stroke-width="1" stroke-dasharray="2 2"/></svg>
@@ -67,27 +75,22 @@
          <svg viewBox="0 0 48 48"><rect x="6" y="6" width="36" height="36" fill="none" stroke="currentColor" stroke-width="2"/><line x1="6" y1="18" x2="42" y2="18" stroke="currentColor" stroke-width="2"/><line x1="6" y1="30" x2="42" y2="30" stroke="currentColor" stroke-width="2"/><line x1="18" y1="6" x2="18" y2="42" stroke="currentColor" stroke-width="2"/><line x1="30" y1="6" x2="30" y2="42" stroke="currentColor" stroke-width="2"/></svg>
          <span>Los: vloer</span>
        </button>
        <button class="new-option disabled" data-kind="dak" disabled title="Nog niet beschikbaar">
          <svg viewBox="0 0 48 48"><path d="M4 30 L24 8 L44 30" fill="none" stroke="currentColor" stroke-width="2"/><line x1="10" y1="30" x2="38" y2="30" stroke="currentColor" stroke-width="2"/></svg>
          <span>Dak</span>
        </button>
      </div>
    </div>
  </div>
  <div id="tab-bar"></div>
  <div id="workspace"></div>
  <script src="js/core/license.js"></script>
  <script src="js/core/logo-data.js"></script>
  <script src="js/core/geometry.js"></script>
-  <script src="js/core/build-stages.js"></script>
+  <script src="js/core/view-layers.js"></script>
  <script src="js/core/canvas-labels.js"></script>
  <script src="js/core/camera-memory.js"></script>
  <script src="js/core/walk-controls.js"></script>
  <script src="js/core/view-filter.js"></script>
  <script src="js/core/ui-kit.js"></script>
-  <script src="js/core/ribbon.js"></script>
+  <script src="js/core/menubar.js"></script>
  <script src="js/core/inspector.js"></script>
  <script src="js/core/skybox.js"></script>
  <script src="js/vendor/jspdf.umd.min.js"></script>
  <script src="js/core/pdf-sheet.js"></script>
@@ -4,7 +4,7 @@
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
-const APP_VERSION = '0.7.0';
+const APP_VERSION = '0.7.1';
 // 0.0.X per kleine iteratie, 0.X.0 per mijlpaal, X.0.0 bij live-gang.
 let tabs = [];
@@ -28,72 +28,83 @@ function defaultNameFor(kind) {
 function setWorkspaceEmpty() {
  document.getElementById('workspace').innerHTML = `<div id="workspace-empty">
    <div>Geen ontwerp geopend.</div>
-    <div style="font-size:11px;">Bestand &rarr; Nieuw &rarr; kies een objecttype</div>
+    <div style="font-size:12px;">Bestand &rsaquo; Nieuw (Ctrl+N)</div>
  </div>`;
 }
-function updateEditMenuState() {
+const editorHas = (fn) => !!(currentEditor && typeof currentEditor[fn] === 'function' && (!currentEditor.can || currentEditor.can(fn)));
-  Ribbon.refresh();
+const editorCall = (fn, ...args) => { if (editorHas(fn)) return currentEditor[fn](...args); };
 const viewState = () => editorCall('viewState') || {};
 // Menu met de sneltoets per item; KEY_HELP hieronder is het overzicht (Help › Sneltoetsen). Editor-acties werken alleen als de editor ze kent.
 const MENUS = [
  { label: 'Bestand', items: [
    { label: 'Nieuw…', icon: 'file-earmark-plus', keys: 'Ctrl+N', run: openNewModal },
    { label: 'Openen…', icon: 'folder2-open', keys: 'Ctrl+O', run: () => editorCall('triggerImport'), enabled: () => editorHas('triggerImport') },
    { label: 'Opslaan (JSON + PDF)', icon: 'save', keys: 'Ctrl+S', run: () => editorCall('exportDesign'), enabled: () => editorHas('exportDesign') },
    { sep: true }, { head: 'Exporteren' },
    { label: 'CAD (DXF)', icon: 'vector-pen', run: () => editorCall('exportDxf'), enabled: () => editorHas('exportDxf') },
    { label: 'BIM (IFC)', icon: 'boxes', run: () => editorCall('exportIfc'), enabled: () => editorHas('exportIfc') },
    { label: 'Render (OBJ)', icon: 'badge-3d', run: () => editorCall('exportObj'), enabled: () => editorHas('exportObj') },
    { sep: true },
    { label: 'Projectgegevens…', icon: 'card-text', run: () => editorCall('openProjectProperties'), enabled: () => editorHas('openProjectProperties') },
    { label: 'Kosten & tijden…', icon: 'calculator', run: () => CostSettings.open() },
    { sep: true },
    { label: 'Ontwerp sluiten', icon: 'x-lg', run: () => activeTabId !== null && closeTab(activeTabId), enabled: () => activeTabId !== null }
  ] },
  { label: 'Beeld', items: [
    ...UI.VIEWS.map(v => ({ label: v.label, icon: v.icon, keys: v.key1, run: () => editorCall('setView', v.key),
      enabled: () => editorHas('setView'), checked: () => viewState().view === v.key })),
    { label: 'Rapport', icon: 'clipboard-data', keys: '4', run: () => editorCall('toggleReport'), enabled: () => editorHas('toggleReport'), checked: () => !!viewState().report },
    { sep: true },
    { label: 'Doorsnede', icon: 'scissors', keys: 'X', run: () => editorCall('toggleSection'), enabled: () => editorHas('toggleSection'), checked: () => !!viewState().section },
    { label: 'Plattegrond passend', icon: 'aspect-ratio', keys: 'F', run: () => editorCall('fitView'), enabled: () => editorHas('fitView') },
    { label: 'Lopen', icon: 'person-walking', keys: 'L', run: () => editorCall('toggleWalk'), enabled: () => editorHas('toggleWalk'), checked: () => !!viewState().walk },
    { sep: true },
    { label: 'Panelen verbergen', icon: 'layout-sidebar-inset', keys: 'Ctrl+\\', run: togglePanels, checked: () => document.body.classList.contains('panels-hidden') },
    { label: 'Volledig scherm', icon: 'fullscreen', keys: 'F11', run: toggleBrowserFullscreen, checked: () => !!document.fullscreenElement }
  ] },
  { label: 'Help', items: [
    { label: 'Sneltoetsen en bediening', icon: 'keyboard', keys: '?', run: openKeys },
    { label: 'Over Tectum', icon: 'info-circle', run: () => document.getElementById('about-overlay').classList.add('open') }
  ] }
 ];
 const KEY_HELP = [
  ['Bestand', [['Ctrl+N', 'Nieuw ontwerp'], ['Ctrl+O', 'Openen'], ['Ctrl+S', 'Opslaan (JSON + PDF)']]],
  ['Gereedschap (woning)', [['V', 'Selecteren'], ['W', 'Binnenwand tekenen'], ['R', 'Ruimte vullen'], ['I', 'Inrichting plaatsen'],
    ['Esc', 'Gereedschap stoppen, daarna selectie opheffen'], ['Del', 'Selectie verwijderen'], ['D / Shift+D', 'Inrichting draaien'], ['Dubbelklik', 'Onderdeel bewerken (wand, vloer)']]],
  ['Beeld', [['1 / 2 / 3', '2D + 3D, alleen 2D, alleen 3D'], ['4', 'Rapport aan/uit'], ['X', 'Doorsnede aan/uit'], ['F', 'Plattegrond passend'],
    ['L', 'Lopen aan/uit'], ['Ctrl+\\', 'Panelen verbergen'], ['F11', 'Volledig scherm']]],
  ['Wand-editor', [['Shift+H', 'Horizontaal spiegelen']]],
  ['3D rondkijken', [['Slepen', 'Draaien'], ['Rechts slepen', 'Verschuiven'], ['Scrollwiel', 'Zoomen']], true],
  ['Plattegrond', [['Scrollwiel', 'Zoomen'], ['Slepen op lege plek', 'Verschuiven'], ['Middelste muisknop', 'Verschuiven']], true],
  ['Lopen', [['W / S', 'Vooruit / achteruit (ook pijl op/neer)'], ['A / D', 'Opzij'], ['← / →', 'Draaien'], ['Shift', 'Rennen'], ['E', 'Deur of schakelaar bedienen'], ['L / Esc', 'Stoppen met lopen']]],
  ['Rondkijken tijdens lopen', [['Slepen', 'Rondkijken']], true]
 ];
 function openKeys() {
  // Muisacties als tekst, toetsen als <kbd>.
  document.getElementById('keys-body').innerHTML = KEY_HELP.map(([title, rows, mouse]) =>
    `<section><h3>${title}</h3>${rows.map(([k, d]) => `<div class="keys-row"><span>${mouse ? `<span class="keys-mouse">${k}</span>`
      : k.split(' / ').map(x => `<kbd>${x}</kbd>`).join(' / ')}</span><span>${d}</span></div>`).join('')}</section>`).join('');
  document.getElementById('keys-overlay').classList.add('open');
 }
-const editorHas = (fn) => !!(currentEditor && typeof currentEditor[fn] === 'function');
+function togglePanels() {
-const editorCall = (fn) => { if (editorHas(fn)) currentEditor[fn](); };
+  document.body.classList.toggle('panels-hidden');
-const disabledUnless = (fn) => editorHas(fn) ? '' : 'disabled';
+  window.dispatchEvent(new Event('resize'));
 function appRibbonTabs() {
  const { big, small } = Ribbon;
  const wireClicks = (body) => body.querySelectorAll('[data-app]').forEach(b => b.addEventListener('click', () => {
    const a = b.dataset.app;
    if (a === 'new') openNewModal();
    else if (a === 'new-kind') openNew(b.dataset.kind, b.dataset.template);
    else if (a === 'fullscreen') toggleBrowserFullscreen();
    else if (a === 'costs') CostSettings.open();
    else if (a === 'about') document.getElementById('about-overlay').classList.add('open');
    else editorCall(a);
  }));
  return [
    { key: 'bestand', label: 'Bestand', order: 0, wire: wireClicks, groups: () => [
      { label: 'Document', html:
        big('Nieuw', 'file-earmark-plus', 'data-app="new" title="Nieuw ontwerp (Ctrl+N)"') +
        big('Openen', 'folder2-open', `data-app="triggerImport" title="JSON-ontwerp openen" ${disabledUnless('triggerImport')}`) +
        big('Opslaan', 'save', `data-app="exportDesign" title="Opslaan als JSON + PDF (Ctrl+S)" ${disabledUnless('exportDesign')}`) },
      { label: 'Exporteren', html:
        big('CAD (DXF)', 'vector-pen', `data-app="exportDxf" title="Plattegrond en gevels als DXF voor CAD (AutoCAD, BricsCAD, …), 1:1 in mm; daar op te slaan als DWG" ${disabledUnless('exportDxf')}`) +
        big('BIM (IFC)', 'boxes', `data-app="exportIfc" title="Bouwconstructie als IFC4 (balken, platen, elektra) per element, zonder afwerking en inrichting" ${disabledUnless('exportIfc')}`) +
        big('Render (OBJ)', 'badge-3d', `data-app="exportObj" title="Volledige afgewerkte woning als OBJ + MTL + texturen in een ZIP, voor renders in Blender" ${disabledUnless('exportObj')}`) },
      { label: 'Snel nieuw', html:
        Object.entries(HouseModel.MODELS).map(([key, m]) => small(m.label, m.icon, `data-app="new-kind" data-kind="woning" data-template="${key}"`)).join('') +
        small('Woning', 'house', 'data-app="new-kind" data-kind="woning" data-template="single"') +
        small('Woning L-vorm', 'bounding-box-circles', 'data-app="new-kind" data-kind="woning" data-template="L"') +
        small('Los: muur', 'bricks', 'data-app="new-kind" data-kind="muur"') +
        small('Los: vloer', 'grid-3x3', 'data-app="new-kind" data-kind="vloer"') },
      { label: 'Project', html: big('Eigenschappen', 'card-text', `data-app="openProjectProperties" title="Projectgegevens voor de PDF" ${disabledUnless('openProjectProperties')}`) }
    ] },
    { key: 'beeld', label: 'Beeld', order: 80, wire: wireClicks, groups: () => [
      { label: 'Venster', html:
        small('Volledig scherm', 'fullscreen', 'data-app="fullscreen" title="F"') +
        small('3D groot', 'badge-3d', `data-app="toggleFullscreen3D" title="T: standaard → 3D groot → alleen render" ${disabledUnless('toggleFullscreen3D')}`) +
        small('2D groot', 'aspect-ratio', `data-app="toggleFullscreen2D" title="R" ${disabledUnless('toggleFullscreen2D')}`) },
      { label: 'Camera', html:
        big('Lopen', 'person-walking', `data-app="toggleWalk" title="Shift+T. W/S of pijltjes: vooruit/achteruit · A/D: opzij · pijl links/rechts: draaien · Shift: rennen · slepen: rondkijken" ${disabledUnless('toggleWalk')}`) +
        small('Bediening', 'mouse', 'title="Rondom: slepen = draaien · rechts slepen = verschuiven · scrollwiel = zoomen. Lopen: Shift+T."') }
    ] },
    { key: 'extra', label: 'Extra', order: 90, wire: wireClicks, groups: () => [
      { label: 'Bewerken', html: small('Horizontaal spiegelen', 'symmetry-vertical', `data-app="mirrorHorizontal" title="H" ${disabledUnless('mirrorHorizontal')}`) },
      { label: 'Instellingen', html: big('Kosten & tijden', 'calculator', 'data-app="costs"') },
      { label: 'Info', html: big('Over Tectum', 'info-circle', 'data-app="about"') }
    ] }
  ];
 }
 function renderTabBar() {
-  const bar = document.getElementById('tab-bar');
+  const bar = document.getElementById('doc-tabs');
  bar.innerHTML = tabs.map(tab => `
-    <div class="tab-item ${tab.id === activeTabId ? 'active' : ''}" data-tab-id="${tab.id}">
+    <div class="doc-tab ${tab.id === activeTabId ? 'active' : ''}" data-tab-id="${tab.id}" role="tab" aria-selected="${tab.id === activeTabId}" title="${UI.esc(tab.name)}">
-      <span class="tab-name">${tab.name}</span>
+      <span class="doc-name">${UI.esc(tab.name)}</span>
-      <span class="tab-close" data-close-id="${tab.id}">&times;</span>
+      <button type="button" class="doc-close" data-close-id="${tab.id}" title="Sluiten" aria-label="Sluiten">&times;</button>
    </div>
  `).join('');
  document.getElementById('top-save').disabled = !editorHas('exportDesign');
 }
 function onTabSaved(tab, filenameWithExt) {
@@ -106,7 +117,6 @@ function onTabSaved(tab, filenameWithExt) {
 function mountEditorForTab(tab) {
  const ws = document.getElementById('workspace');
  ws.innerHTML = '';
  Ribbon.setSource('editor', []);
  currentEditor = editorModuleFor(tab.kind).mount(ws, { onSaved: (filename) => onTabSaved(tab, filename), template: tab.template, cameraKey: 'tab' + tab.id });
  if (tab.stateJson && typeof currentEditor.loadStateJson === 'function') {
    currentEditor.loadStateJson(tab.stateJson);
@@ -124,7 +134,6 @@ function switchToTab(tabId) {
  activeTabId = tabId;
  mountEditorForTab(tabs.find(t => t.id === tabId));
  updateEditMenuState();
  renderTabBar();
 }
@@ -142,7 +151,6 @@ function openNew(kind, template) {
  tabs.push(tab);
  activeTabId = tab.id;
  mountEditorForTab(tab);
  updateEditMenuState();
  renderTabBar();
 }
@@ -183,17 +191,15 @@ function closeTab(tabId) {
    switchToTab(tabs[tabs.length - 1].id);
  } else {
    setWorkspaceEmpty();
    Ribbon.setSource('editor', []);
    updateEditMenuState();
    renderTabBar();
  }
 }
 function wireTabBar() {
-  document.getElementById('tab-bar').addEventListener('click', (e) => {
+  document.getElementById('doc-tabs').addEventListener('click', (e) => {
-    const closeBtn = e.target.closest('.tab-close');
+    const closeBtn = e.target.closest('.doc-close');
    if (closeBtn) { closeTab(parseInt(closeBtn.dataset.closeId, 10)); return; }
-    const item = e.target.closest('.tab-item');
+    const item = e.target.closest('.doc-tab');
    if (item) switchToTab(parseInt(item.dataset.tabId, 10));
  });
 }
@@ -237,41 +243,42 @@ function toggleBrowserFullscreen() {
  else document.documentElement.requestFullscreen();
 }
 function closeOverlays() {
  const open = document.querySelector('.dlg-overlay.open, #about-overlay.open, #new-overlay.open');
  if (open) { open.classList.remove('open'); return true; }
  return Menubar.close() || UI.closePopovers();
 }
 function wireHotkeys() {
  document.addEventListener('keydown', (e) => {
    const inField = ['INPUT', 'SELECT', 'TEXTAREA'].includes(document.activeElement.tagName);
-
+    const k = e.key.toLowerCase();
-    if (e.ctrlKey && e.key.toLowerCase() === 's') {
+    if (e.ctrlKey || e.metaKey) {
-      e.preventDefault();
+      const act = { s: () => editorCall('exportDesign'), n: openNewModal, o: () => editorCall('triggerImport'), '\\': togglePanels }[k];
-      if (currentEditor && typeof currentEditor.exportDesign === 'function') currentEditor.exportDesign();
+      if (act && !e.altKey && !e.shiftKey) { e.preventDefault(); act(); }
      return;
    }
-    if (e.ctrlKey && e.key.toLowerCase() === 'n') {
+    if (e.key === 'Escape' && closeOverlays()) { e.stopImmediatePropagation(); return; }
-      e.preventDefault();
+    if (inField || e.altKey || viewState().walk && !['l', 'escape'].includes(k)) return;
-      openNewModal();
+    const view = UI.VIEWS.find(v => v.key1 === e.key);
-      return;
+    if (view) editorCall('setView', view.key);
-    }
+    else if (e.key === '4') editorCall('toggleReport');
-    if (inField || e.ctrlKey || e.metaKey || e.altKey) return;
+    else if (k === 'x') editorCall('toggleSection');
-
+    else if (k === 'f') editorCall('fitView');
-    if (e.key.toLowerCase() === 'f') {
+    else if (k === 'l') editorCall('toggleWalk');
-      toggleBrowserFullscreen();
+    else if (k === 'h' && e.shiftKey) editorCall('mirrorHorizontal');
-    } else if (e.key.toLowerCase() === 'h') {
+    else if (e.key === '?') openKeys();
-      if (currentEditor && typeof currentEditor.mirrorHorizontal === 'function') currentEditor.mirrorHorizontal();
+  }, true);
    } else if (e.key.toLowerCase() === 't' && e.shiftKey) {
      if (currentEditor && typeof currentEditor.toggleWalk === 'function') currentEditor.toggleWalk();
    } else if (e.key.toLowerCase() === 't') {
      if (currentEditor && typeof currentEditor.toggleFullscreen3D === 'function') currentEditor.toggleFullscreen3D();
    } else if (e.key.toLowerCase() === 'r') {
      if (currentEditor && typeof currentEditor.toggleFullscreen2D === 'function') currentEditor.toggleFullscreen2D();
    }
  });
 }
 document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('.app-version-slot').forEach(el => { el.textContent = 'v' + APP_VERSION; });
  document.querySelectorAll('.app-version-number').forEach(el => { el.textContent = APP_VERSION; });
-  Ribbon.init(document.getElementById('ribbon'));
+  Menubar.init(document.getElementById('menubar'), MENUS);
-  Ribbon.setSource('app', appRibbonTabs());
+  document.getElementById('top-save').addEventListener('click', () => editorCall('exportDesign'));
  document.getElementById('keys-overlay').addEventListener('click', (e) => {
    if (e.target.id === 'keys-overlay' || e.target.closest('[data-close]')) document.getElementById('keys-overlay').classList.remove('open');
  });
  wireAbout();
  wireNewModal();
  wireHotkeys();
@@ -1,62 +0,0 @@
 /*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
 window.BuildStages = (() => {
  const LIST = [
    { key: 'regelwerk', label: 'Regelwerk', hint: 'Vloer-, wand- en dakbalken' },
    { key: 'elektra', label: 'Elektra', hint: 'Installatiebuizen door wanden en plafond, dozen en meterkast' },
    { key: 'beplating', label: 'Beplating', hint: 'Spaanplaat binnen, OSB vloer, plafond en dakbeschot, cementplaat buiten' },
    { key: 'doek', label: 'Vochtdoek', hint: 'Vochtdoek op de buitenzijde' },
    { key: 'latwerk', label: 'Latwerk', hint: 'Kruislat en trasraamplaat' },
    { key: 'gevel', label: 'Gevel & dak', hint: 'Rabat, steen, kozijnen, dakbedekking, sandwichpanelen' },
    { key: 'afwerking', label: 'Afgewerkt', hint: 'Dakrand, verlichting, vloerafwerking, verf binnen' }
  ];
  const FINAL = LIST.length - 1;
  const INDEX = Object.fromEntries(LIST.map((s, i) => [s.key, i]));
  const clamp = (stage) => (typeof stage === 'number' && isFinite(stage)) ? Math.max(0, Math.min(FINAL, Math.round(stage))) : FINAL;
  const shows = (stage, key) => clamp(stage) >= INDEX[key];
  function createBar(pane, stage, onChange) {
    const el = document.createElement('div');
    el.className = 'stage-bar';
    el.innerHTML = `
      <div class="stage-row">
        <span class="stage-title"><i class="bi bi-layers"></i>Bouwfase</span>
        <div class="stage-track">
          <input type="range" class="stage-range" min="0" max="${FINAL}" step="1" value="${clamp(stage)}" aria-label="Bouwfase">
          <div class="stage-ticks">${LIST.map((s, i) => `<span data-i="${i}" title="${s.label}: ${s.hint}">${i + 1}</span>`).join('')}</div>
        </div>
        <span class="stage-name"></span>
      </div>
      <div class="stage-extra"></div>`;
    pane.appendChild(el);
    const range = el.querySelector('.stage-range'), name = el.querySelector('.stage-name');
    const sync = () => {
      const i = clamp(Number(range.value));
      name.textContent = LIST[i].label;
      name.title = LIST[i].hint;
      el.querySelectorAll('.stage-ticks span').forEach(t => t.classList.toggle('on', Number(t.dataset.i) <= i));
    };
    range.addEventListener('input', () => { sync(); onChange(clamp(Number(range.value))); });
    el.querySelector('.stage-ticks').addEventListener('click', (e) => {
      const t = e.target.closest('[data-i]');
      if (!t) return;
      range.value = t.dataset.i;
      sync();
      onChange(clamp(Number(range.value)));
    });
    // T, R, ... zijn sneltoetsen van de weergave, niet van de schuif.
    range.addEventListener('keydown', (e) => { if (!/^Arrow|Home|End/.test(e.key)) range.blur(); });
    // Na slepen focus loslaten, zodat de pijltoetsen weer naar de weergave (lopen) gaan.
    el.addEventListener('pointerup', (e) => { if (e.target.matches('input[type=range]')) setTimeout(() => e.target.blur(), 0); });
    sync();
    return { el, extra: el.querySelector('.stage-extra'), set: (s) => { range.value = clamp(s); sync(); } };
  }
  return { LIST, FINAL, INDEX, clamp, shows, createBar };
 })();
@@ -0,0 +1,63 @@
 /*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
 // Eigenschappenpaneel rechts: eigenschappen van de selectie, of van de woning als er niets geselecteerd is.
 // Een sectie = { key, label, icon, groups() → [{ label, html }], wire(el) }; elke sectie krijgt een eigen element,
 // zodat wire() alleen de eigen knoppen koppelt.
 window.Inspector = (() => {
  const icon = (n) => `<i class="bi bi-${n}" aria-hidden="true"></i>`;
  const big = (label, iconName, attrs, cls) =>
    `<button type="button" class="ins-btn ins-big${cls ? ' ' + cls : ''}" ${attrs || ''}>${icon(iconName)}<span>${label}</span></button>`;
  const small = (label, iconName, attrs, cls) =>
    `<button type="button" class="ins-btn${cls ? ' ' + cls : ''}" ${attrs || ''}>${icon(iconName)}<span>${label}</span></button>`;
  const kv = (label, value, unit) =>
    `<div class="ins-kv"><span>${label}</span><b>${value}${unit ? `<small>${unit}</small>` : ''}</b></div>`;
  const PREF_KEY = 'tectum.inspector.open';
  let open;
  try { open = new Set(JSON.parse(localStorage.getItem(PREF_KEY) || 'null') || ['gevel']); } catch (e) { open = new Set(['gevel']); }
  const saveOpen = () => { try { localStorage.setItem(PREF_KEY, JSON.stringify([...open])); } catch (e) { } };
  // Een groepskop gelijk aan de sectienaam (bijv. Elektra › Elektra) vervalt.
  const groupsHtml = (groups, secLabel) => groups.filter(Boolean).map(g =>
    `<div class="ins-group${g.cls ? ' ' + g.cls : ''}">${g.label && g.label.toLowerCase() !== String(secLabel || '').toLowerCase() ? `<h3>${g.label}</h3>` : ''}<div class="ins-group-body">${g.html}</div></div>`).join('');
  // view = { crumbs: [{ label, attrs }], title, icon, sub, top: html, sections: [...], collapsible, onBack }
  function render(el, view) {
    const scrollKey = view.title + '|' + (view.sub || '');
    const keepScroll = el._insKey === scrollKey ? el.scrollTop : 0;
    el._insKey = scrollKey;
    el.innerHTML = `<div class="ins-head">
        ${view.crumbs && view.crumbs.length ? `<div class="ins-crumbs">${view.crumbs.map(c => `<button type="button" class="ins-crumb" ${c.attrs || ''}>${c.label}</button>`).join(icon('chevron-right'))}${icon('chevron-right')}</div>` : ''}
        <h2>${view.icon ? icon(view.icon) : ''}<span>${view.title}</span></h2>
        ${view.sub ? `<div class="ins-sub">${view.sub}</div>` : ''}
      </div>
      ${view.top ? `<div class="ins-top">${view.top}</div>` : ''}
      <div class="ins-sections"></div>`;
    const host = el.querySelector('.ins-sections');
    view.sections.filter(Boolean).forEach(sec => {
      const node = document.createElement('section');
      const collapsible = view.collapsible;
      const isOpen = !collapsible || open.has(sec.key);
      node.className = 'ins-section' + (collapsible ? ' ins-collapsible' : '') + (isOpen ? ' open' : '');
      node.innerHTML = (collapsible ? `<button type="button" class="ins-section-head" aria-expanded="${isOpen}">${sec.icon ? icon(sec.icon) : ''}<span>${sec.label}</span>${icon('chevron-down')}</button>` : '') +
        `<div class="ins-section-body">${groupsHtml(sec.groups ? sec.groups() : [], sec.label)}</div>`;
      host.appendChild(node);
      if (collapsible) node.querySelector('.ins-section-head').addEventListener('click', () => {
        const now = !node.classList.contains('open');
        node.classList.toggle('open', now);
        node.querySelector('.ins-section-head').setAttribute('aria-expanded', now);
        if (now) open.add(sec.key); else open.delete(sec.key);
        saveOpen();
      });
      if (sec.wire) sec.wire(node);
    });
    el.scrollTop = keepScroll;
  }
  return { big, small, kv, render };
 })();
@@ -0,0 +1,61 @@
 /*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
 // Menubalk: menu = { label, items: [{ label, icon, keys, run, enabled(), checked() } | { sep: true } | { head }] }.
 // Beschikbaarheid wordt bij het openen bepaald; is een menu open, dan opent hover het buurmenu.
 window.Menubar = (() => {
  let root = null, menus = [], openIdx = -1;
  function itemHtml(it, mi, ii) {
    if (it.sep) return '<div class="mb-sep"></div>';
    if (it.head) return `<div class="mb-head">${it.head}</div>`;
    const off = it.enabled && !it.enabled();
    const on = it.checked && it.checked();
    return `<button type="button" class="mb-item${on ? ' checked' : ''}" data-mi="${mi}" data-ii="${ii}"${off ? ' disabled' : ''}>
      <span class="mb-ico">${on ? '<i class="bi bi-check2"></i>' : it.icon ? `<i class="bi bi-${it.icon}"></i>` : ''}</span>
      <span class="mb-label">${it.label}</span><span class="mb-keys">${it.keys || ''}</span></button>`;
  }
  function close() {
    if (openIdx < 0) return false;
    openIdx = -1;
    root.querySelectorAll('.mb-menu').forEach(m => m.classList.remove('open'));
    root.querySelectorAll('.mb-drop').forEach(d => { d.innerHTML = ''; });
    return true;
  }
  function openMenu(i) {
    close();
    openIdx = i;
    const wrap = root.querySelectorAll('.mb-menu')[i];
    wrap.classList.add('open');
    wrap.querySelector('.mb-drop').innerHTML = menus[i].items.map((it, ii) => itemHtml(it, i, ii)).join('');
  }
  function init(el, list) {
    root = el;
    menus = list;
    el.innerHTML = menus.map((m, i) => `<div class="mb-menu"><button type="button" class="mb-top" data-menu="${i}">${m.label}</button><div class="mb-drop" role="menu"></div></div>`).join('');
    el.addEventListener('click', (e) => {
      e.stopPropagation();
      const top = e.target.closest('[data-menu]');
      if (top) { const i = Number(top.dataset.menu); if (openIdx === i) close(); else openMenu(i); return; }
      const item = e.target.closest('.mb-item');
      if (!item || item.disabled) return;
      const it = menus[Number(item.dataset.mi)].items[Number(item.dataset.ii)];
      close();
      it.run();
    });
    el.addEventListener('mouseover', (e) => {
      const top = e.target.closest('[data-menu]');
      if (top && openIdx >= 0 && Number(top.dataset.menu) !== openIdx) openMenu(Number(top.dataset.menu));
    });
    document.addEventListener('click', close);
  }
  return { init, close };
 })();
@@ -129,5 +129,70 @@ window.ObjWriter = (() => {
    };
  }
-  return { build };
+  // OBJ kent geen lampen: een Blender-script dat de OBJ importeert (als die er nog niet is) en de lampen als echte
  // spotlights plaatst. sources: LightingModel.lightSources (m, Y omhoog); Blender is Z omhoog: (x, -z, y).
  const BLENDER_WATT = { wandlamp: 10, dakrandspot: 8, binnenspot: 15 };
  function blenderLights(sources, opts) {
    const o = opts || {}, origin = o.origin || { x: 0, y: 0, z: 0 }, name = o.name || 'woning';
    const c = new THREE.Color(o.color !== undefined ? o.color : 0xffd9a0);
    const lin = (x) => x <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);
    const t = (v) => `(${v.map(f4).join(', ')})`;
    const rows = sources.map(s => `    (${JSON.stringify(s.kind)}, ${t([s.x - origin.x, -(s.z - origin.z), s.y - origin.y])}, ${t([s.dir.x, -s.dir.z, s.dir.y])}, ` +
      `${f3(Math.min(Math.PI, s.angle * 2))}, ${f3(s.penumbra)}, ${BLENDER_WATT[s.kind] || 10}),\n`).join('');
    return `# Tectum${o.app ? ' ' + o.app : ''}: lampen voor ${name}.obj
 # Blender: Scripting > Open > dit bestand > Run Script. Importeert ${name}.obj uit dezelfde map
 # (IMPORTEER = False als je de OBJ al zelf hebt geïmporteerd) en zet elke lamp als spotlight in de
 # collectie "Tectum lampen"; opnieuw uitvoeren vervangt de lampen.
 # HELDERHEID schaalt alle lampen; vermogens in watt per soort staan in de lijst (soort, plek, richting,
 # kegel, zachte rand, watt).
 import bpy, os
 from mathutils import Vector
 IMPORTEER = True
 HELDERHEID = 1.0
 KLEUR = (${f3(lin(c.r))}, ${f3(lin(c.g))}, ${f3(lin(c.b))})
 OBJ = "${name}.obj"
 LAMPEN = [
 ${rows}]
 def map_van_script():
    for area in bpy.context.screen.areas if bpy.context.screen else []:
        if area.type == 'TEXT_EDITOR' and area.spaces.active.text and area.spaces.active.text.filepath:
            return os.path.dirname(bpy.path.abspath(area.spaces.active.text.filepath))
    return os.path.dirname(bpy.data.filepath) if bpy.data.filepath else ""
 pad = os.path.join(map_van_script(), OBJ)
 if IMPORTEER and not any(ob.get("tectum") == OBJ for ob in bpy.data.objects):
    if not os.path.exists(pad):
        raise Exception(f"{OBJ} niet gevonden naast dit script; zet IMPORTEER = False na een eigen import")
    if hasattr(bpy.ops.wm, "obj_import"):
        bpy.ops.wm.obj_import(filepath=pad)
    else:
        bpy.ops.import_scene.obj(filepath=pad)
    for ob in bpy.context.selected_objects:
        ob["tectum"] = OBJ
 oud = bpy.data.collections.get("Tectum lampen")
 if oud:
    for ob in list(oud.objects):
        bpy.data.objects.remove(ob, do_unlink=True)
    bpy.data.collections.remove(oud)
 col = bpy.data.collections.new("Tectum lampen")
 bpy.context.scene.collection.children.link(col)
 for i, (soort, plek, richting, kegel, rand, watt) in enumerate(LAMPEN):
    licht = bpy.data.lights.new(f"{soort}_{i + 1}", 'SPOT')
    licht.energy = watt * HELDERHEID
    licht.color = KLEUR
    licht.spot_size = kegel
    licht.spot_blend = rand
    licht.shadow_soft_size = 0.03
    ob = bpy.data.objects.new(licht.name, licht)
    ob.location = plek
    ob.rotation_euler = Vector(richting).to_track_quat('-Z', 'Y').to_euler()
    col.objects.link(ob)
 print(f"Tectum: {len(LAMPEN)} lampen geplaatst")
 `;
  }
  return { build, blenderLights };
 })();
@@ -1,116 +0,0 @@
 /*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
 window.Ribbon = (() => {
  const sources = {};
  const SOURCE_ORDER = ['app', 'editor'];
  let root = null, tabsEl = null, bodyEl = null;
  let activeKey = null, lastPlainKey = null;
  let auto = true;
  let collapsed = false, notified = null;
  const listeners = [];
  const PREF_KEY = 'tectum.ribbon.collapsed';
  const icon = (n) => `<i class="bi bi-${n}" aria-hidden="true"></i>`;
  const big = (label, iconName, attrs, cls) =>
    `<button type="button" class="rb-btn rb-big${cls ? ' ' + cls : ''}" ${attrs || ''}>${icon(iconName)}<span>${label}</span></button>`;
  const small = (label, iconName, attrs, cls) =>
    `<button type="button" class="rb-btn rb-small${cls ? ' ' + cls : ''}" ${attrs || ''}>${icon(iconName)}<span>${label}</span></button>`;
  const kv = (label, value, unit) =>
    `<div class="rb-kv"><span>${label}</span><b>${value}${unit ? `<small>${unit}</small>` : ''}</b></div>`;
  function allTabs() {
    const byKey = new Map();
    SOURCE_ORDER.concat(Object.keys(sources).filter(n => !SOURCE_ORDER.includes(n))).forEach(name => {
      (sources[name] || []).forEach(t => {
        if (!byKey.has(t.key)) byKey.set(t.key, { key: t.key, label: t.label, order: t.order || 0, contextual: !!t.contextual, icon: t.icon, parts: [] });
        const m = byKey.get(t.key);
        if (t.order !== undefined && name !== 'app') m.order = t.order;
        if (t.label && name !== 'app') m.label = t.label;
        if (t.contextual) m.contextual = true;
        m.parts.push(t);
      });
    });
    return Array.from(byKey.values()).sort((a, b) => (a.contextual - b.contextual) || (a.order - b.order));
  }
  function renderTabs(list) {
    tabsEl.innerHTML = list.map(t =>
      `<button type="button" class="rb-tab${t.key === activeKey ? ' active' : ''}${t.contextual ? ' rb-ctx' : ''}" data-rb-tab="${t.key}">${t.contextual && t.icon ? icon(t.icon) : ''}<span>${t.label}</span></button>`).join('');
  }
  function renderBody(list) {
    const tab = list.find(t => t.key === activeKey);
    if (!tab) { bodyEl.innerHTML = ''; return; }
    const groups = [];
    tab.parts.forEach(p => (p.groups ? p.groups() : []).forEach(g => g && groups.push(g)));
    bodyEl.innerHTML = groups.map(g =>
      `<section class="rb-group${g.cls ? ' ' + g.cls : ''}"><div class="rb-group-body">${g.html}</div><div class="rb-group-label">${g.label}</div></section>`).join('') +
      `<button type="button" class="rb-collapse" title="Ribbon inklappen (dubbelklik op een tabblad)">${icon('chevron-up')}</button>`;
    tab.parts.forEach(p => p.wire && p.wire(bodyEl));
  }
  function render() {
    if (!root) return;
    const list = allTabs();
    if (!list.some(t => t.key === activeKey) || (auto && !list.some(t => t.key === activeKey && t.contextual))) {
      const pick = [lastPlainKey, 'start'].find(k => list.some(t => t.key === k));
      activeKey = pick || (list.find(t => !t.contextual) || {}).key || null;
    }
    renderTabs(list);
    renderBody(list);
    root.classList.toggle('rb-collapsed', collapsed);
    if (notified !== activeKey) { notified = activeKey; listeners.forEach(fn => fn(activeKey)); }
  }
  function activate(key) {
    const list = allTabs();
    const tab = list.find(t => t.key === key);
    if (!tab) return;
    activeKey = key;
    auto = false;
    if (!tab.contextual) lastPlainKey = key;
    if (collapsed) { collapsed = false; savePref(); }
    render();
    tab.parts.forEach(p => p.onShow && p.onShow());
  }
  function savePref() { try { localStorage.setItem(PREF_KEY, collapsed ? '1' : '0'); } catch (e) { } }
  function init(el) {
    root = el;
    try { collapsed = localStorage.getItem(PREF_KEY) === '1'; } catch (e) { collapsed = false; }
    tabsEl = el.querySelector('.rb-tabs');
    bodyEl = el.querySelector('.rb-body');
    tabsEl.addEventListener('click', (e) => {
      const b = e.target.closest('[data-rb-tab]');
      if (!b) return;
      if (b.dataset.rbTab === activeKey && collapsed) { collapsed = false; savePref(); render(); return; }
      activate(b.dataset.rbTab);
    });
    tabsEl.addEventListener('dblclick', (e) => {
      if (!e.target.closest('[data-rb-tab]')) return;
      collapsed = !collapsed; savePref(); render();
    });
    bodyEl.addEventListener('click', (e) => {
      if (e.target.closest('.rb-collapse')) { collapsed = true; savePref(); render(); }
    });
    render();
  }
  function setSource(name, tabs, opts) {
    sources[name] = tabs || [];
    const ctx = (tabs || []).find(t => t.contextual);
    if (opts && opts.focus && ctx) { activeKey = ctx.key; if (collapsed) { collapsed = false; savePref(); } }
    render();
    if (opts && opts.focus && ctx && ctx.onShow) ctx.onShow();
  }
  function onChange(fn) { listeners.push(fn); return () => { const i = listeners.indexOf(fn); if (i >= 0) listeners.splice(i, 1); }; }
  return { init, setSource, activate, refresh: render, active: () => activeKey, onChange, big, small, kv };
 })();
@@ -161,32 +161,26 @@ window.Skybox = (() => {
  function createToggle(toolbar, onChange) {
    let m = getMode();
    const wrap = document.createElement('div');
-    wrap.className = 'view-filter';
+    wrap.className = 'tb-pop-wrap';
-    wrap.innerHTML = `<button type="button" class="btn-3d-toggle vf-btn" title="Omgeving"></button>
+    wrap.innerHTML = `<button type="button" class="tb-btn" title="Omgeving in 3D"></button>
-      <div class="vf-menu">${MODES.map(k => `<div class="vf-item vf-option" data-mode="${k}"><i class="bi bi-${LABELS[k][0]}"></i>${LABELS[k][1]}</div>`).join('')}</div>`;
+      <div class="tb-pop">${MODES.map(k => `<button type="button" class="pop-option" data-mode="${k}"><i class="bi bi-${LABELS[k][0]}"></i>${LABELS[k][1]}</button>`).join('')}</div>`;
    toolbar.appendChild(wrap);
-    const btn = wrap.querySelector('.vf-btn'), menu = wrap.querySelector('.vf-menu');
+    const btn = wrap.querySelector('.tb-btn'), menu = wrap.querySelector('.tb-pop');
    const close = UI.popover(btn, menu);
    const sync = () => {
-      btn.innerHTML = `<i class="bi bi-${LABELS[m][0]}"></i>${LABELS[m][1]}<i class="bi bi-chevron-down"></i>`;
+      btn.innerHTML = `<i class="bi bi-${LABELS[m][0]}"></i><span>${LABELS[m][1]}</span><i class="bi bi-chevron-down tb-caret"></i>`;
-      menu.querySelectorAll('.vf-option').forEach(o => o.classList.toggle('active', o.dataset.mode === m));
+      menu.querySelectorAll('.pop-option').forEach(o => o.classList.toggle('active', o.dataset.mode === m));
    };
    btn.addEventListener('click', (e) => { e.stopPropagation(); menu.classList.toggle('open'); });
    menu.addEventListener('click', (e) => {
-      e.stopPropagation();
+      const opt = e.target.closest('.pop-option');
      const opt = e.target.closest('.vf-option');
      if (!opt) return;
-      menu.classList.remove('open');
+      close();
      if (opt.dataset.mode === m) return;
      m = opt.dataset.mode;
      remember(m);
      sync();
      onChange(m);
    });
    const closeOnOutside = () => {
      if (!document.body.contains(wrap)) { document.removeEventListener('click', closeOnOutside); return; }
      menu.classList.remove('open');
    };
    document.addEventListener('click', closeOnOutside);
    sync();
    return wrap;
  }
@@ -128,16 +128,56 @@ window.UI = (() => {
    if (el) el.addEventListener('change', (e) => { fn(e.target.checked); after && after(); });
  }
-  function cycle3D(el) {
+  // Weergave van een editor: klassen fullscreen-2d/-3d op het editor-element (de looptocht bewaart en herstelt className).
-    el.classList.remove('fullscreen-2d');
+  const VIEWS = [
-    if (!el.classList.contains('fullscreen-3d')) el.classList.add('fullscreen-3d');
+    { key: 'split', icon: 'layout-split', label: '2D + 3D', key1: '1' },
-    else if (!el.classList.contains('render-only')) el.classList.add('render-only');
+    { key: '2d', icon: 'square', label: 'Alleen 2D', key1: '2' },
-    else el.classList.remove('fullscreen-3d', 'render-only');
+    { key: '3d', icon: 'box', label: 'Alleen 3D', key1: '3' }
-  }
+  ];
-  function toggle2D(el) {
+  const viewOf = (el) => el.classList.contains('fullscreen-3d') ? '3d' : el.classList.contains('fullscreen-2d') ? '2d' : 'split';
-    el.classList.remove('fullscreen-3d', 'render-only');
+  function setView(el, mode) {
-    el.classList.toggle('fullscreen-2d');
+    el.classList.toggle('fullscreen-3d', mode === '3d');
    el.classList.toggle('fullscreen-2d', mode === '2d');
    el.classList.remove('render-only');
    el.querySelectorAll('[data-view]').forEach(b => b.classList.toggle('active', b.dataset.view === mode));
  }
-  return { esc, icon, hint, num, range, onRange, setRange, sel, toggle, color, onColor, text, onText, section, info, warn, grid, button, actions, tabs, wireTabs, specCard, onNum, onSel, onToggle, cycle3D, toggle2D };
+  const tb = (label, iconName, attrs, cls) =>
    `<button type="button" class="tb-btn${cls ? ' ' + cls : ''}" ${attrs || ''}>${iconName ? icon(iconName) : ''}${label ? `<span>${label}</span>` : ''}</button>`;
  const tbSep = () => '<span class="tb-sep"></span>';
  const viewSeg = (mode) => `<div class="tb-seg" role="group" aria-label="Weergave">${VIEWS.map(v =>
    tb('', v.icon, `data-view="${v.key}" title="${v.label} (${v.key1})"`, v.key === mode ? 'active' : '')).join('')}</div>`;
  // Uitklappaneel onder een knop; sluit bij klik buiten, Esc of een andere popover.
  let openPop = null;
  function popover(btn, panel) {
    const close = () => { panel.classList.remove('open'); btn.classList.remove('open'); if (openPop === close) openPop = null; };
    btn.addEventListener('click', (e) => {
      e.stopPropagation();
      const was = panel.classList.contains('open');
      if (openPop) openPop();
      if (!was) { panel.classList.add('open'); btn.classList.add('open'); openPop = close; }
    });
    panel.addEventListener('click', (e) => e.stopPropagation());
    return close;
  }
  const closePopovers = () => { if (openPop) { openPop(); return true; } return false; };
  document.addEventListener('click', () => closePopovers());
  // Kaarten verdelen over kolommen van min. minW breed; telkens in de kortste kolom. Opnieuw aanroepen bij een andere breedte.
  function masonry(el, minW, gap) {
    if (!el) return;
    gap = gap === undefined ? 12 : gap;
    const cards = el._cards || (el._cards = [...el.children]);
    const n = Math.max(1, Math.floor((el.clientWidth + gap) / (minW + gap)));
    if (el._cols === n) return;
    el._cols = n;
    el.classList.add('ui-masonry');
    const cols = Array.from({ length: n }, () => { const c = document.createElement('div'); c.className = 'ui-masonry-col'; return c; });
    el.replaceChildren(...cols);
    cards.forEach(card => cols.reduce((a, b) => b.offsetHeight < a.offsetHeight ? b : a).appendChild(card));
  }
  return { esc, icon, hint, num, range, onRange, setRange, sel, toggle, color, onColor, text, onText, section, info, warn, grid, button, actions, tabs, wireTabs, specCard, onNum, onSel, onToggle,
    VIEWS, viewOf, setView, tb, tbSep, viewSeg, popover, closePopovers, masonry };
 })();
@@ -1,43 +0,0 @@
 /*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
 function createViewFilter(toolbar, items, onChange) {
  const state = {};
  items.forEach(it => { state[it.key] = it.checked !== false; });
  const wrap = document.createElement('div');
  wrap.className = 'view-filter';
  wrap.innerHTML = `
    <button type="button" class="btn-3d-toggle vf-btn"><i class="bi bi-eye"></i>Weergave<i class="bi bi-chevron-down"></i></button>
    <div class="vf-menu">
      ${items.map(it => `<label class="vf-item"><input type="checkbox" data-key="${it.key}" ${state[it.key] ? 'checked' : ''}> ${it.label}</label>`).join('')}
    </div>`;
  toolbar.insertBefore(wrap, toolbar.firstChild);
  const menu = wrap.querySelector('.vf-menu');
  const btn = wrap.querySelector('.vf-btn');
  btn.addEventListener('click', (e) => {
    e.stopPropagation();
    menu.classList.toggle('open');
    btn.classList.toggle('active', menu.classList.contains('open'));
  });
  menu.addEventListener('click', (e) => e.stopPropagation());
  menu.addEventListener('change', (e) => {
    const key = e.target.dataset.key;
    if (!key) return;
    state[key] = e.target.checked;
    onChange(Object.assign({}, state));
  });
  const closeOnOutside = () => {
    if (!document.body.contains(wrap)) { document.removeEventListener('click', closeOnOutside); return; }
    menu.classList.remove('open');
    btn.classList.remove('active');
  };
  document.addEventListener('click', closeOnOutside);
  return { state: () => Object.assign({}, state) };
 }
@@ -0,0 +1,108 @@
 /*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
 window.ViewLayers = (() => {
  // phase: bouwvolgorde voor de snelkeuze "Fase" (en IFC); lagen zonder phase blijven daarbij aan.
  const LIST = [
    { key: 'regelwerk', label: 'Regelwerk', icon: 'grid-3x3', phase: 0, hint: 'Vloer-, wand- en dakbalken, stalen nokbalk' },
    { key: 'elektra', label: 'Elektra', icon: 'lightning-charge', phase: 1, hint: 'Meterkast, buizen, dozen, schakelaars en wcd\'s' },
    { key: 'beplating', label: 'Beplating', icon: 'square', phase: 2, hint: 'Spaanplaat binnen, OSB vloer, plafond en dakbeschot, cementplaat buiten' },
    { key: 'doek', label: 'Vochtdoek', icon: 'droplet', phase: 3, hint: 'Vochtdoek op de buitenzijde' },
    { key: 'latwerk', label: 'Latwerk', icon: 'distribute-vertical', phase: 4, hint: 'Kruislat en trasraamplaat' },
    { key: 'gevel', label: 'Gevelbekleding', icon: 'bricks', phase: 5, hint: 'Rabat, steenstrips, stuc, schoorsteen, sandwichpanelen' },
    { key: 'kozijnen', label: 'Kozijnen', icon: 'window', phase: 5, hint: 'Kozijnen, deuren en glas' },
    { key: 'dakbedekking', label: 'Dakbedekking', icon: 'house-up', phase: 5, hint: 'Dakleer of riet' },
    { key: 'afwerking', label: 'Afwerking', icon: 'brush', phase: 6, hint: 'Vloerafwerking, verf, plafond, dakrand, dagkanten, logobord' },
    { key: 'lampen', label: 'Verlichting', icon: 'lightbulb', phase: 6, hint: 'Gevellampen, spots en binnenverlichting' },
    { key: 'inrichting', label: 'Inrichting', icon: 'lamp', phase: 6, hint: 'Sanitair, keuken, kasten, bed, zithoek' },
    { key: 'ruimtes', label: 'Ruimtes', icon: 'bounding-box', phase: 6, hint: 'Ruimtes met functie, vloer en wandpanelen' },
    { key: 'dak', label: 'Dak', icon: 'house', hint: 'Het hele dak met dakrand, overkapping, palen en schoorsteen; uit om van boven in de woning te kijken' },
    { key: 'maten', label: 'Maten', icon: 'rulers', hint: 'Maatvoering in de plattegrond' }
  ];
  const KEYS = LIST.map(l => l.key);
  const PHASES = ['Regelwerk', 'Elektra', 'Beplating', 'Vochtdoek', 'Latwerk', 'Gevel & dak', 'Afgewerkt'];
  const all = () => Object.fromEntries(KEYS.map(k => [k, true]));
  const normalize = (layers) => Object.fromEntries(KEYS.map(k => [k, !layers || layers[k] !== false]));
  const shows = (layers, key) => !layers || layers[key] !== false;
  // Alles tot en met een bouwfase (0..6), zoals de vroegere bouwfase-schuif.
  const upTo = (phase) => Object.fromEntries(LIST.map(l => [l.key, l.phase === undefined || l.phase <= phase]));
  const phaseOf = (layers) => PHASES.findIndex((_, p) => LIST.every(l => l.phase === undefined || (l.phase <= p) === shows(layers, l.key)));
  // Verbergt meshes met een van de materialen (ook afgeleide met userData.base), bijv. het regelwerk.
  function hideByMaterial(group, materials) {
    if (!group) return;
    const set = new Set(materials.filter(Boolean));
    group.traverse(o => {
      if (!o.isMesh) return;
      const m0 = Array.isArray(o.material) ? o.material[0] : o.material;
      if (m0 && (set.has(m0) || set.has(m0.userData && m0.userData.base))) o.visible = false;
    });
  }
  const GROUPS = [
    ['Casco', ['regelwerk', 'elektra', 'beplating', 'doek', 'latwerk']],
    ['Buiten', ['gevel', 'kozijnen', 'dakbedekking', 'dak']],
    ['Binnen', ['afwerking', 'lampen', 'inrichting', 'ruimtes']],
    ['Plattegrond', ['maten']]
  ];
  // De enige plek voor zichtbaarheid: knop "Lagen" in de werkbalk met een uitklappaneel.
  // keys beperkt de lagen (wand-editor); extras zijn editor-eigen schakelaars, bijv. beplating binnen/buiten.
  function createMenu(toolbar, o) {
    const items = o.keys ? LIST.filter(l => o.keys.includes(l.key)) : LIST;
    const extras = o.extras || [];
    const extra = Object.fromEntries(extras.map(x => [x.key, x.checked !== false]));
    const check = (attr, key, label, hint, ic) =>
      `<label class="pop-check" title="${hint || ''}"><input type="checkbox" ${attr}="${key}">${ic ? `<i class="bi bi-${ic}"></i>` : ''}<span>${label}</span></label>`;
    const wrap = document.createElement('div');
    wrap.className = 'tb-pop-wrap';
    wrap.innerHTML = `<button type="button" class="tb-btn" title="Zichtbaarheid van lagen in 2D en 3D"><i class="bi bi-layers"></i><span>Lagen</span><i class="bi bi-chevron-down tb-caret"></i></button>
      <div class="tb-pop pop-layers">
        ${items.length ? `<div class="pop-row">
          <select class="pop-phase" title="Alles tot en met een bouwfase; Dak en Maten blijven zoals ze staan">
            <option value="">Bouwfase…</option>${PHASES.map((p, i) => `<option value="${i}">${i + 1}. ${p}</option>`).join('')}
          </select>
          <button type="button" class="ui-btn" data-all>Alles</button>
        </div>
        <div class="pop-groups">${GROUPS.map(([label, keys]) => {
          const g = items.filter(l => keys.includes(l.key));
          return g.length ? `<div class="pop-group"><div class="pop-head">${label}</div>${g.map(l => check('data-layer', l.key, l.label, l.hint, l.icon)).join('')}</div>` : '';
        }).join('')}</div>` : ''}
        ${extras.length ? `<div class="pop-group"><div class="pop-head">${o.extrasLabel || 'Weergave'}</div>${extras.map(x => check('data-extra', x.key, x.label, x.hint)).join('')}</div>` : ''}
      </div>`;
    toolbar.appendChild(wrap);
    const btn = wrap.querySelector('.tb-btn'), panel = wrap.querySelector('.tb-pop');
    UI.popover(btn, panel);
    let cur = normalize(o.layers);
    const sel = panel.querySelector('.pop-phase');
    const sync = () => {
      panel.querySelectorAll('[data-layer]').forEach(c => { c.checked = cur[c.dataset.layer]; });
      panel.querySelectorAll('[data-extra]').forEach(c => { c.checked = extra[c.dataset.extra]; });
      if (sel) { const p = phaseOf(cur); sel.value = p >= 0 ? String(p) : ''; }
      const hidden = items.some(l => !cur[l.key]) || extras.some(x => !extra[x.key]);
      btn.classList.toggle('flag', hidden);
    };
    const emit = () => { sync(); o.onChange && o.onChange(Object.assign({}, cur)); };
    panel.addEventListener('change', (e) => {
      const t = e.target;
      if (t.dataset.layer) { cur = Object.assign({}, cur, { [t.dataset.layer]: t.checked }); emit(); }
      else if (t.dataset.extra) { extra[t.dataset.extra] = t.checked; sync(); o.onExtra && o.onExtra(Object.assign({}, extra)); }
      else if (t === sel && sel.value !== '') {
        const keep = Object.fromEntries(LIST.filter(l => l.phase === undefined).map(l => [l.key, cur[l.key]]));
        cur = Object.assign(upTo(Number(sel.value)), keep);
        emit();
      }
    });
    const all = panel.querySelector('[data-all]');
    if (all) all.addEventListener('click', () => { cur = ViewLayers.all(); emit(); });
    sync();
    return { el: wrap, set: (l) => { cur = normalize(l); sync(); }, toggle: (key) => { cur = Object.assign({}, cur, { [key]: !cur[key] }); emit(); } };
  }
  return { LIST, KEYS, PHASES, GROUPS, all, normalize, shows, upTo, phaseOf, hideByMaterial, createMenu };
 })();
@@ -24,13 +24,13 @@ window.CostSettings = (() => {
        <div class="cs-body"></div>
        <div class="material-info">Bedragen excl. btw. De CSV's in kosten/ zijn leidend: Toepassen geldt tot herladen; om een wijziging te houden "intern.csv downloaden" en het bestand in kosten/ vervangen, of met "Wijzigingen downloaden" alleen de aangepaste velden (met de standaardwaarde ernaast) opslaan. Prijzen pas je aan in leveranciers.csv (CSV = daaruit, anders noodwaarde). Een veld dat afwijkt van intern.csv is gemarkeerd.</div>
        <div class="modal-footer">
-          <button type="button" class="io-btn" data-cs="reset">Standaard</button>
+          <button type="button" class="ui-btn" data-cs="reset">Standaard</button>
-          <button type="button" class="io-btn" data-cs="export">intern.csv downloaden</button>
+          <button type="button" class="ui-btn" data-cs="export">intern.csv downloaden</button>
-          <button type="button" class="io-btn" data-cs="export-changes" title="Alleen de velden die afwijken van intern.csv">Wijzigingen downloaden</button>
+          <button type="button" class="ui-btn" data-cs="export-changes" title="Alleen de velden die afwijken van intern.csv">Wijzigingen downloaden</button>
-          <button type="button" class="io-btn" data-cs="import">Importeren&hellip;</button>
+          <button type="button" class="ui-btn" data-cs="import">Importeren&hellip;</button>
          <span style="flex:1"></span>
-          <button type="button" class="io-btn" data-cs="cancel">Annuleren</button>
+          <button type="button" class="ui-btn" data-cs="cancel">Annuleren</button>
-          <button type="button" class="material-toggle-btn active" data-cs="save" style="flex:none; padding:6px 18px;">Toepassen</button>
+          <button type="button" class="ui-btn ui-btn-primary" data-cs="save">Toepassen</button>
        </div>
        <input type="file" data-file="import" accept=".csv,.json,text/csv,application/json,text/plain" style="display:none">
        <input type="file" data-file="leveranciers" accept=".csv,text/csv,text/plain" style="display:none">
@@ -143,9 +143,30 @@ window.ElektraModel = (() => {
    return null;
  }
-  function makeRouter(units) {
+  // rooms: leidingen lopen boven een vals plafond, niet tegen de onderkant van een hoog dak.
  function makeRouter(units, rooms) {
    const unitAt = (x, z) => units.find(u => x >= u.rect.x0 - 1 && x <= u.rect.x1 + 1 && z >= u.rect.z0 - 1 && z <= u.rect.z1 + 1) || null;
-    const ceilAt = (x, z) => {
+    // Vals plafond (mm boven vloer) van de ruimte op (x,z): undefined = geen ruimte (binnenwand, naad), null = geen vals plafond.
    const roomPlenum = (x, z) => { const r = rooms && rooms.roomAt ? rooms.roomAt(x, z) : null; return r ? (r.ceilingActive ? r.ceiling : null) : undefined; };
    // Absoluut; in een binnenwand het laagste valse plafond ernaast: de leiding gaat daar door de wand, niet omhoog.
    const plenumAt = (x, z) => {
      const u = unitAt(x, z);
      if (!u) return null;
      let v = roomPlenum(x, z);
      if (v === undefined) {
        v = null;
        [[1, 0], [-1, 0], [0, 1], [0, -1]].forEach(([dx, dz]) => {
          for (const d of [60, 120, 200, 300]) {
            const o = roomPlenum(x + dx * d, z + dz * d);
            if (o === undefined) continue;
            if (o !== null) v = v === null ? o : Math.min(v, o);
            break;
          }
        });
      }
      return v === null ? null : u.layout.floorTop + v;
    };
    const roofCeilAt = (x, z) => {
      let u = unitAt(x, z);
      if (!u) u = units.reduce((best, c) => {
        const dx = Math.max(c.rect.x0 - x, 0, x - c.rect.x1), dz = Math.max(c.rect.z0 - z, 0, z - c.rect.z1);
@@ -155,24 +176,103 @@ window.ElektraModel = (() => {
      const r = u.rect;
      return u.roof.ceilingAt(Math.max(r.x0 + 1, Math.min(r.x1 - 1, x)), Math.max(r.z0 + 1, Math.min(r.z1 - 1, z)));
    };
    // Leidingvlak: het valse plafond waar dat lager ligt dan het dak, anders de onderkant van het dak.
    const plenumOn = (x, z) => { const v = plenumAt(x, z); return v !== null && v < roofCeilAt(x, z) - 1 ? v : null; };
    const ceilAt = (x, z) => { const v = plenumOn(x, z); return v !== null ? v : roofCeilAt(x, z); };
    const inPlenum = (x, z, y) => y < roofCeilAt(x, z) - 50;
    // Over het plafond het vlak volgen: knikken in het dak (nok, kil) als tussenpunt, de overgang vals plafond/dak
    // verticaal op de grens (in de wand), zodat de buis nooit los door de ruimte of buiten het dak loopt.
    function followCeiling(pts) {
      const same = (u, v) => (u === null && v === null) || (u !== null && v !== null && Math.abs(u - v) < 1);
      const out = [pts[0]];
      pts.slice(1).forEach((q, i) => {
        const p = pts[i], len = Math.hypot(q.x - p.x, q.z - p.z);
        if (p.ceil && q.ceil && !p.floor && !q.floor && len > 1) {
          const at = (t) => ({ x: p.x + (q.x - p.x) * t, z: p.z + (q.z - p.z) * t });
          const hOf = (pt, st) => st !== null ? st : roofCeilAt(pt.x, pt.z);
          const mk = (pt, y) => Object.assign({}, p, pt, { y, wall: null, ceil: true, floor: false, plenum: inPlenum(pt.x, pt.z, y) });
          const n = Math.max(2, Math.ceil(len / 100));
          const S = Array.from({ length: n + 1 }, (_, k) => { const pt = at(k / n), st = plenumOn(pt.x, pt.z); return { t: k / n, pt, st, y: hOf(pt, st) }; });
          for (let k = 1; k <= n; k++) {
            const A = S[k - 1], B = S[k];
            if (!same(A.st, B.st)) {
              let lo = A.t, hi = B.t;
              for (let it = 0; it < 10; it++) { const m = (lo + hi) / 2, pm = at(m); if (same(plenumOn(pm.x, pm.z), A.st)) lo = m; else hi = m; }
              const pb = at((lo + hi) / 2);
              out.push(mk(pb, hOf(pb, A.st)), mk(pb, hOf(pb, B.st)));
            } else if (k < n && same(B.st, S[k + 1].st) && Math.abs(A.y - 2 * B.y + S[k + 1].y) > 2) out.push(mk(B.pt, B.y));
          }
        }
        out.push(q);
      });
      return out;
    }
    const floorAt = (x, z) => { const u = unitAt(x, z) || units[0]; return u.layout.floorTop; };
    const clampTo = (v, lo, hi) => lo > hi ? (lo + hi) / 2 : Math.max(lo, Math.min(hi, v));
    const segInside = (p, q) => {
      const n = Math.max(1, Math.ceil(Math.hypot(q.x - p.x, q.z - p.z) / 50));
      for (let k = 0; k <= n; k++) if (!unitAt(p.x + (q.x - p.x) * k / n, p.z + (q.z - p.z) * k / n)) return false;
      return true;
    };
    // Punt buiten de woning (gevellamp, dakrandspot): eerst loodrecht naar de dichtstbijzijnde unit.
    const clampIn = (p) => {
      if (unitAt(p.x, p.z)) return null;
      let best = null;
      units.forEach(u => {
        const r = u.rect, x = clampTo(p.x, r.x0 + 1, r.x1 - 1), z = clampTo(p.z, r.z0 + 1, r.z1 - 1), d = Math.hypot(x - p.x, z - p.z);
        if (!best || d < best.d) best = { x, z, d };
      });
      return best && { x: best.x, z: best.z };
    };
    // Knikpunten in de plattegrond tussen a en b (exclusief), haaks en binnen de units: bij een L- of T-vorm mag de
    // knik niet in de lege hoek buiten de woning vallen. Eerst x dan z (zoals altijd), anders z dan x, anders via een unit.
    function corners(a, b, viaCeiling) {
      const A = clampIn(a), B = clampIn(b), pa = A || a, pb = B || b;
      const cands = [[{ x: pb.x, z: pa.z }], [{ x: pa.x, z: pb.z }]];
      units.forEach(u => {
        const r = u.rect, xm = clampTo((pa.x + pb.x) / 2, r.x0 + 150, r.x1 - 150), zm = clampTo((pa.z + pb.z) / 2, r.z0 + 150, r.z1 - 150);
        cands.push([{ x: xm, z: pa.z }, { x: xm, z: pb.z }], [{ x: pa.x, z: zm }, { x: pb.x, z: zm }]);
      });
      let best = null;
      cands.forEach(c => {
        const pts = [pa].concat(c, [pb]);
        if (!pts.slice(1).every((q, i) => segInside(pts[i], q))) return;
        let len = pts.slice(1).reduce((t, q, i) => t + Math.abs(q.x - pts[i].x) + Math.abs(q.z - pts[i].z), 0);
        // Over het plafond telt op- en neergaan mee: liever door een laag vals plafond dan over de nok.
        if (viaCeiling) pts.slice(1).forEach((q, i) => {
          const p = pts[i], m = Math.max(1, Math.ceil(Math.hypot(q.x - p.x, q.z - p.z) / 200));
          let prev = ceilAt(p.x, p.z);
          for (let k = 1; k <= m; k++) { const y = ceilAt(p.x + (q.x - p.x) * k / m, p.z + (q.z - p.z) * k / m); len += Math.abs(y - prev); prev = y; }
        });
        if (!best || len < best.len - 1) best = { len, c };
      });
      return [A].concat(best ? best.c : cands[0], [B]).filter(Boolean)
        .filter(q => Math.hypot(q.x - a.x, q.z - a.z) > 0.5 && Math.hypot(q.x - b.x, q.z - b.z) > 0.5);
    }
    const strictlyInside = (x, z) => units.some(u => x > u.rect.x0 + 5 && x < u.rect.x1 - 5 && z > u.rect.z0 + 5 && z < u.rect.z1 - 5);
    function path(a, b) {
-      const P = (p, wall, ceil, floor) => ({ x: p.x, y: p.y, z: p.z, wall: wall || null, ceil: !!ceil, floor: !!floor });
+      const P = (p, wall, ceil, floor) => ({ x: p.x, y: p.y, z: p.z, wall: wall || null, ceil: !!ceil, floor: !!floor, plenum: !!ceil && inPlenum(p.x, p.z, p.y) });
      if (a.mount === 'vloer' || b.mount === 'vloer') {
        const fa = floorAt(a.x, a.z) - FLOOR_DEPTH, fb = floorAt(b.x, b.z) - FLOOR_DEPTH;
-        return [P(a, a.face, false, a.mount === 'vloer'), P({ x: a.x, y: fa, z: a.z }, a.face, false, true), P({ x: b.x, y: fa, z: a.z }, null, false, true),
+        return [P(a, a.face, false, a.mount === 'vloer'), P({ x: a.x, y: fa, z: a.z }, a.face, false, true)]
-          P({ x: b.x, y: fb, z: b.z }, b.face, false, true), P(b, b.face, false, b.mount === 'vloer')];
+          .concat(corners(a, b).map(c => P({ x: c.x, y: fa, z: c.z }, null, false, true)),
            [P({ x: b.x, y: fb, z: b.z }, b.face, false, true), P(b, b.face, false, b.mount === 'vloer')]);
      }
      if (a.face && a.face === b.face) return [P(a, a.face), P({ x: a.x, y: b.y, z: a.z }, a.face), P(b, b.face)];
-      if (a.mount === 'buiten' && b.mount === 'buiten') return [P(a), P({ x: b.x, y: a.y, z: a.z }), P(b)];
+      // Gevellamp naar gevellamp: langs de gevel, bij een binnenhoek niet dwars door de woning.
-      const top = (p) => p.mount === 'plafond' ? p.y : ceilAt(p.x, p.z);
+      if (a.mount === 'buiten' && b.mount === 'buiten') {
        const c = strictlyInside(b.x, a.z) ? { x: a.x, z: b.z } : { x: b.x, z: a.z };
        return [P(a), P({ x: c.x, y: a.y, z: c.z }), P(b)];
      }
      // Wandpunt: de plafondhoogte iets de ruimte in meten (de wand zelf hoort bij geen ruimte).
      const top = (p) => p.mount === 'plafond' ? p.y : p.face && p.face.n ? ceilAt(p.x + p.face.n.x * 50, p.z + p.face.n.z * 50) : ceilAt(p.x, p.z);
      const ya = top(a), yb = top(b), dropB = Math.abs(yb - b.y) > 1;
      const pts = [P(a, a.face, a.mount === 'plafond')];
      if (Math.abs(ya - a.y) > 1) pts.push(P({ x: a.x, y: ya, z: a.z }, a.face, true));
-      pts.push(P({ x: b.x, y: ceilAt(b.x, a.z), z: a.z }, null, true));
+      corners(a, b, true).forEach(c => pts.push(P({ x: c.x, y: ceilAt(c.x, c.z), z: c.z }, null, true)));
      pts.push(P({ x: b.x, y: yb, z: b.z }, dropB ? b.face : null, true));
      if (dropB) pts.push(P(b, b.face, false));
-      return pts;
+      return followCeiling(pts);
    }
    const length = (pts) => pts.slice(1).reduce((s, q, i) => s + Math.hypot(q.x - pts[i].x, q.y - pts[i].y, q.z - pts[i].z), 0);
    const cost = (a, b) => Math.abs(a.x - b.x) + Math.abs(a.z - b.z) + Math.abs(a.y - b.y);
@@ -201,7 +301,7 @@ window.ElektraModel = (() => {
      groups: [], runs: [], cables: [], wires: [], conduits: [], materials: [], warnings: [], items: [], faces: []
    };
    if (!s.enabled || !units.length) return out;
-    const R = makeRouter(units);
+    const R = makeRouter(units, rooms);
    const faces = {};
    units.forEach(u => { faces[u.id] = facesOf(u, interior); });
    const faceOfPiece = (u, p) => faces[u.id].find(f => f.piece === p && f.side === -1);
@@ -735,13 +835,13 @@ window.ElektraModel = (() => {
      conduit
    };
  }
-  function build3D(el, materials, stage) {
+  // rough: buizen en inbouwdozen (in de wand en boven het plafond); uit bij de render-export.
  function build3D(el, materials, layers, rough) {
    const toM = 0.001, group = new THREE.Group();
    if (!el || !el.enabled) return group;
    const mats = materials || createMaterials();
    mats.plateMaterial.color.setHex(PLATE_COLORS[el.settings.plateColor].hex);
-    const st = BuildStages.clamp(stage), show = (key) => BuildStages.shows(st, key);
+    if (!ViewLayers.shows(layers, 'elektra')) return group;
    const rough = show('elektra') && !show('beplating');
    const box = (w, h, d, c, rotY, mat) => {
      const mesh = new THREE.Mesh(new THREE.BoxGeometry(w * toM, h * toM, d * toM), mat);
      mesh.position.set(c.x * toM, c.y * toM, c.z * toM);
@@ -750,18 +850,18 @@ window.ElektraModel = (() => {
      return mesh;
    };
    const k = el.meterkast;
-    if (k && show('elektra')) {
+    if (k) {
      box(k.w, k.h, k.d, k.center, k.rotY, mats.kastMaterial);
      const front = facePoint(k.face, k.u, k.y + k.h / 2, k.d + 2);
      box(k.w - 30, k.h - 30, 4, front, k.rotY, mats.deurMaterial);
    }
-    if (show('afwerking')) {
+    if (ViewLayers.shows(layers, 'afwerking')) {
      el.combos.forEach(c => box(c.width, PLATE, 10, c.center, c.rotY, mats.plateMaterial));
      el.wcds.forEach(w => box(WCD_W, PLATE, 12, w.center, w.rotY, mats.plateMaterial));
      el.apps.forEach(a => box(PLATE, PLATE, 12, a.center, a.rotY, mats.plateMaterial));
      el.floorWcds.forEach(w => box(130, 8, 130, { x: w.x, y: w.y + 4, z: w.z }, 0, mats.plateMaterial));
    }
-    if (!rough) return group;
+    if (rough === false) return group;
    const up = new THREE.Vector3(0, 1, 0);
    const shift = (p) => ({
@@ -859,7 +959,7 @@ window.ElektraModel = (() => {
          } else {
            n += bom.filter(bp => VERTICAL_KINDS.includes(bp.kind) && between(bp.x + f.W / 2, a.u, b.u) && Math.abs(a.y - bp.y) <= bp.length / 2).length;
          }
-        } else if (!vertical && p.ceil && q.ceil) {
+        } else if (!vertical && p.ceil && q.ceil && !(p.plenum && q.plenum)) {
          const mid = { x: (p.x + q.x) / 2, z: (p.z + q.z) / 2 }, u = R.unitAt(mid.x, mid.z);
          if (u) u.roof.planes.forEach(pl => {
            const dm = roofDeckMap(u, pl), c = clipPlan(p, q, dm.bounds);
@@ -6,7 +6,10 @@
 */
 const FLOOR_TEMPLATE = `
-<div id="floor-app">
+<div id="floor-app" class="ed-app">
 <div class="ed-main">
  <div class="ed-toolbar" id="floor-toolbar"></div>
  <div class="ed-views">
  <div id="floor-left-column">
    <div id="floor-pane-2d-container">
      <div class="pane-2d-sub" id="floor-pane-top">
@@ -18,7 +21,15 @@ const FLOOR_TEMPLATE = `
        <canvas id="floor-canvas-section"></canvas>
      </div>
    </div>
-    <div id="floor-control-panel">
+  </div>
  <div id="floor-right-column">
    <div id="floor-pane-3d">
      <div class="pane-label">3D</div>
    </div>
  </div>
  </div>
 </div>
    <div id="floor-control-panel" class="ed-panel">
      <div class="io-toolbar">
        <input type="file" id="f-file-import-json" accept="application/json" style="display:none;">
        <span id="f-io-status" class="io-status"></span>
@@ -27,6 +38,7 @@ const FLOOR_TEMPLATE = `
        <button class="tab-btn active" data-tab="floor-tab-main"><i class="bi bi-rulers"></i> Opbouw</button>
        <button class="tab-btn" data-tab="floor-tab-openings"><i class="bi bi-bullseye"></i> Doorvoeren</button>
        <button class="tab-btn" data-tab="floor-tab-chassis"><i class="bi bi-truck"></i> Chassis</button>
        <button class="tab-btn" data-tab="floor-tab-specs"><i class="bi bi-clipboard-data"></i> Resultaat</button>
      </div>
      <div id="floor-tab-main" class="tab-content active">
@@ -57,20 +69,6 @@ const FLOOR_TEMPLATE = `
            <div class="control-group"><label>Afstand max.</label>
              <div><input type="number" id="f-inp-max-sp" value="600" step="10"><span class="unit">mm</span></div></div>
            <div class="divider"></div>
            <div class="result-row"><span>Vloerbalken</span><span data-spec="joist-count" class="highlight">-</span></div>
            <div class="result-row"><span>Vloeroppervlak</span><span data-spec="floor-area" class="highlight">-</span></div>
            <div class="result-row"><span>Volume balkhout</span><span data-spec="joist-m3" class="highlight">-</span></div>
            <div class="result-row"><span>Gewicht balkhout</span><span data-spec="joist-kg" class="highlight">-</span></div>
            <div class="divider"></div>
            <div class="result-row"><span>OSB oppervlak</span><span data-spec="osb-m2" class="highlight">-</span></div>
            <div class="result-row"><span>OSB volume</span><span data-spec="osb-m3" class="highlight">-</span></div>
            <div class="result-row"><span>OSB gewicht</span><span data-spec="osb-kg" class="highlight">-</span></div>
            <div class="divider"></div>
            <div class="result-row"><span>Isolatie</span><span data-spec="void-m3" class="highlight">-</span></div>
            <div class="result-row"><span>Totaal gewicht</span><span data-spec="total-kg" class="highlight">-</span></div>
          </div>
        </div>
      </div>
@@ -82,9 +80,8 @@ const FLOOR_TEMPLATE = `
      </div>
      <div id="floor-tab-chassis" class="tab-content">
-        <div class="material-toggle-group">
+        <div class="control-group"><label for="f-chassis-on">Chassis-laag</label>
-          <button type="button" id="f-btn-chassis-toggle" class="material-toggle-btn">Chassis-laag: Uit</button>
+          <div><label class="ui-switch"><input type="checkbox" id="f-chassis-on"><span></span></label></div></div>
        </div>
        <div class="controls-grid">
          <div>
            <div class="control-group"><label>Wieldiameter</label>
@@ -99,17 +96,9 @@ const FLOOR_TEMPLATE = `
        </div>
        <div id="f-chassis-warning" class="global-warning" style="display:none;"></div>
      </div>
-    </div>
+      <div id="floor-tab-specs" class="tab-content">
  </div>
  <div id="floor-right-column">
    <div id="floor-pane-3d">
      <div class="pane-label">3D</div>
      <div class="toolbar-3d" id="floor-toolbar-3d"></div>
    </div>
    <div id="floor-specs-panel-3d">
-      <div class="controls-grid">
+      <div>
        <div>
          <div class="spec-section">
            <h1><i class="bi bi-columns-gap"></i> Balken</h1>
@@ -139,6 +128,7 @@ const FLOOR_TEMPLATE = `
    </div>
  </div>
 </div>
 </div>
 <div id="wall-project-overlay">
  <div id="wall-project-modal">
@@ -169,8 +159,8 @@ const FLOOR_TEMPLATE = `
      </div>
    </div>
    <div class="modal-footer">
-      <button type="button" id="wall-project-cancel" class="io-btn">Annuleren</button>
+      <button type="button" id="wall-project-cancel" class="ui-btn">Annuleren</button>
-      <button type="button" id="wall-project-save" class="material-toggle-btn active" style="flex:none; padding:6px 18px;">Opslaan</button>
+      <button type="button" id="wall-project-save" class="ui-btn ui-btn-primary">Opslaan</button>
    </div>
  </div>
 </div>
@@ -285,16 +275,14 @@ function mountFloorEditor(container, callbacks) {
  document.querySelectorAll('#floor-tab-main input').forEach(inp => inp.addEventListener('input', updateAll));
  function syncChassisToggleLabel() {
-    const btn = document.getElementById('f-btn-chassis-toggle');
+    document.getElementById('f-chassis-on').checked = chassis.enabled;
    btn.classList.toggle('active', chassis.enabled);
    btn.textContent = 'Chassis-laag: ' + (chassis.enabled ? 'Aan' : 'Uit');
  }
-  document.getElementById('f-btn-chassis-toggle').addEventListener('click', () => {
+  document.getElementById('f-chassis-on').addEventListener('change', (e) => {
-    chassis.enabled = !chassis.enabled;
+    chassis.enabled = e.target.checked;
    syncChassisToggleLabel();
    updateAll();
  });
-  document.querySelectorAll('#floor-tab-chassis input').forEach(inp => inp.addEventListener('input', () => {
+  document.querySelectorAll('#floor-tab-chassis input[type=number]').forEach(inp => inp.addEventListener('input', () => {
    chassis.wheelDiameter = parseFloat(document.getElementById('f-inp-wheel-d').value) || 400;
    chassis.trackWidth = parseFloat(document.getElementById('f-inp-track').value) || 1200;
    chassis.wheelbase = parseFloat(document.getElementById('f-inp-wheelbase').value) || 1200;
@@ -632,11 +620,14 @@ function mountFloorEditor(container, callbacks) {
  let lastResolvedOpenings = [];
  let lastChassisData = { wheels: [], outOfBounds: false };
-  createViewFilter(document.getElementById('floor-toolbar-3d'), [
+  const toolbar = document.getElementById('floor-toolbar');
-    { key: 'beplating', label: roofMode ? 'Beplating (plafond + dakleer)' : 'Beplating (OSB-plaat)' }
+  toolbar.innerHTML = `<div class="tb-spacer"></div><div class="tb-group tb-view"></div>${UI.tbSep()}${UI.viewSeg('split')}`;
-  ], (v) => {
+  toolbar.querySelectorAll('[data-view]').forEach(b => b.addEventListener('click', () => setView(b.dataset.view)));
-    osbVisible = v.beplating;
+  const viewGroup = toolbar.querySelector('.tb-view');
-    update3DScene();
+  ViewLayers.createMenu(viewGroup, {
    layers: {}, keys: [],
    extras: [{ key: 'beplating', label: roofMode ? 'Beplating (plafond + dakleer)' : 'Beplating (OSB-plaat)' }],
    onExtra: (v) => { osbVisible = v.beplating; update3DScene(); }
  });
  let skyMode = Skybox.getMode();
  const skyEnv = Skybox.createEnvironment(scene);
@@ -644,7 +635,7 @@ function mountFloorEditor(container, callbacks) {
    skyEnv.fitTo(floorGroup3D, 0);
    Skybox.apply(skyMode, { env: skyEnv, grid, controls, sun: dirLight, ambient: floorAmbient, base: { ambient: 0.6, sun: 0.8 }, shadowRoot: floorGroup3D });
  };
-  Skybox.createToggle(document.getElementById('floor-toolbar-3d'), (m) => { skyMode = m; applySky(); });
+  Skybox.createToggle(viewGroup, (m) => { skyMode = m; applySky(); });
  function update3DScene() {
    if (floorGroup3D) scene.remove(floorGroup3D);
@@ -691,12 +682,8 @@ function mountFloorEditor(container, callbacks) {
  }
  window.addEventListener('resize', onWindowResize);
-  function toggleFullscreen3D() {
+  function setView(mode) {
-    UI.cycle3D(document.getElementById('floor-app'));
+    UI.setView(document.getElementById('floor-app'), mode);
    requestAnimationFrame(onWindowResize);
  }
  function toggleFullscreen2D() {
    UI.toggle2D(document.getElementById('floor-app'));
    requestAnimationFrame(onWindowResize);
  }
@@ -748,8 +735,8 @@ function mountFloorEditor(container, callbacks) {
    },
    exportDesign,
    triggerImport,
-    toggleFullscreen3D,
+    setView,
-    toggleFullscreen2D,
+    viewState: () => ({ view: UI.viewOf(document.getElementById('floor-app')) }),
    openProjectProperties,
    getStateJson: getPureState,
    loadStateJson: applyPureState
@@ -49,19 +49,19 @@ window.HouseIfc = (() => {
    };
  }
-  function build(state, stage) {
+  function build(state, layers) {
    const M = materialsSet();
    const parts = HouseModel.computeParts(state, {
      wallMaterials: M.wall, floorMaterials: M.floor, roofMaterials: M.roof, elektraMaterials: M.elektra, postMaterials: M.post,
-      stage, lampenVisible: false
+      layers: Object.assign(layers, { lampen: false })
    });
    HouseModel.placeGroups(parts);
    return { parts, classify: classifier(M) };
  }
  function generate(state) {
-    const frame = build(state, BuildStages.INDEX.elektra);
+    const frame = build(state, ViewLayers.upTo(1));
-    const sheet = build(state, BuildStages.INDEX.beplating);
+    const sheet = build(state, ViewLayers.upTo(2));
    const parts = frame.parts;
    if (!parts.units.length) throw new Error('geen units in het ontwerp');
    const bx0 = Math.min(...parts.rects.map(r => r.x0)), bz1 = Math.max(...parts.rects.map(r => r.z1));
@@ -154,6 +154,7 @@ window.HouseModel = (() => {
    S.lighting.mode = 'gevel';
    S.lighting.direction = 'both';
    if (S.elektra && S.elektra.apparaten) Object.assign(S.elektra.apparaten, { koken: true, oven: true, vaatwasser: true });
    if (S.elektra) S.elektra.plateColor = 'antraciet';
    const A = createUnitEntry('A', null, { width: 11240, depth: 3600, height: H, windowOn: [] });
    const B = createUnitEntry('B', { to: 'A', side: 'achter', align: 'start', offset: 0 }, { width: 10600, depth: 3600, height: H, windowOn: [] });
@@ -243,6 +244,7 @@ window.HouseModel = (() => {
    S.lighting.mode = 'gevel';
    S.lighting.direction = 'both';
    if (S.elektra && S.elektra.apparaten) Object.assign(S.elektra.apparaten, { koken: true, oven: true, vaatwasser: true });
    if (S.elektra) S.elektra.plateColor = 'antraciet';
    const A = createUnitEntry('A', null, { width: W, depth: DA, height: H, windowOn: [] });
    const B = createUnitEntry('B', { to: 'A', side: 'achter', align: 'start', offset: 0 }, { width: W, depth: DB, height: H, windowOn: [] });
@@ -309,6 +311,7 @@ window.HouseModel = (() => {
    S.lighting.mode = 'spots';
    S.lighting.direction = 'both';
    if (S.elektra && S.elektra.apparaten) Object.assign(S.elektra.apparaten, { koken: true, oven: true, vaatwasser: true });
    if (S.elektra) S.elektra.plateColor = 'antraciet';
    const A = createUnitEntry('A', null, { width: 14000, depth: D, height: LO, windowOn: [] });
    const B = createUnitEntry('B', { to: 'A', side: 'achter', align: 'end', offset: 0 }, { width: 4600, depth: 3000, height: LO, windowOn: [] });
@@ -383,6 +386,7 @@ window.HouseModel = (() => {
    S.lighting.mode = 'spots';
    S.lighting.direction = 'both';
    if (S.elektra && S.elektra.apparaten) Object.assign(S.elektra.apparaten, { koken: true, oven: true, vaatwasser: true });
    if (S.elektra) S.elektra.plateColor = 'antraciet';
    const A = createUnitEntry('A', null, { width: W, depth: D, height: LO, windowOn: [] });
    const B = createUnitEntry('B', { to: 'A', side: 'achter', align: 'start', offset: 0 }, { width: W, depth: D, height: LO, windowOn: [] });
@@ -473,6 +477,7 @@ window.HouseModel = (() => {
    S.lighting.mode = 'spots';
    S.lighting.direction = 'both';
    if (S.elektra && S.elektra.apparaten) Object.assign(S.elektra.apparaten, { koken: true, oven: true, vaatwasser: true });
    if (S.elektra) S.elektra.plateColor = 'antraciet';
    const A = createUnitEntry('A', null, { width: 9200 - V, depth: D, height: LO, windowOn: [] });
    const B = createUnitEntry('B', { to: 'A', side: 'achter', align: 'end', offset: 0 }, { width: 9200, depth: D, height: LO, windowOn: [] });
@@ -567,6 +572,7 @@ window.HouseModel = (() => {
    S.lighting.mode = 'spots';
    S.lighting.direction = 'both';
    if (S.elektra && S.elektra.apparaten) Object.assign(S.elektra.apparaten, { koken: true, oven: true, vaatwasser: true });
    if (S.elektra) S.elektra.plateColor = 'antraciet';
    const A = createUnitEntry('A', null, { width: 13000, depth: D, height: LO, windowOn: [] });
    const B = createUnitEntry('B', { to: 'A', side: 'achter', align: 'start', offset: 0 }, { width: 13000, depth: D, height: LO, windowOn: [] });
@@ -1231,8 +1237,9 @@ window.HouseModel = (() => {
  function computeParts(state, opts) {
    const o = opts || {};
    const build = !o.skip3D;
-    const stage = BuildStages.clamp(o.stage);
+    const layers = ViewLayers.normalize(o.layers);
-    const shows = (key) => BuildStages.shows(stage, key);
+    const shows = (key) => layers[key];
    const hideFrame = (group, mats) => { if (group && mats && !shows('regelwerk')) ViewLayers.hideByMaterial(group, [mats.woodMaterial, mats.steelMaterial]); };
    applyGlobalSettings(state);
    const rects = unitRects(state);
    const rectById = {};
@@ -1256,7 +1263,7 @@ window.HouseModel = (() => {
      if (!build) return { group: null, stats: null, specs: null };
      const built = WallModel.build3D(config, frame, {
        materials: o.wallMaterials, buitenMateriaal, cladding, trasraam, skinExt, facade, skinFrom, spaanplaatBelow, stone, skinAbove, trimTop, battenAbove, stuc, skinTop,
-        painted: state.settings.interiorPaint && shows('afwerking'), stage, rabatColor: state.settings.facade.rabatColor
+        painted: state.settings.interiorPaint && shows('afwerking'), layers, rabatColor: state.settings.facade.rabatColor
      });
      return { group: built.group, stats: built.stats, specs: WallModel.computeSpecs(config, built.stats, buitenMateriaal) };
    }
@@ -1301,9 +1308,10 @@ window.HouseModel = (() => {
      const floorData = FloorModel.computeFromState(u.unit.floor, rims);
      const floorSpecs = FloorModel.computeSpecs(floorData.calcData, floorData.resolvedOpenings);
      const floorGroup = build ? FloorModel.build3D(floorData.calcData, floorData.resolvedOpenings, floorData.chassisData, {
-        materials: o.floorMaterials, osbVisible: shows('beplating'),
+        materials: o.floorMaterials, osbVisible: shows('beplating'), outerJoistsOnly: !!o.finishedOnly && shows('beplating'),
        finish: shows('afwerking') ? { key: state.settings.floorFinish, originX: rect.cx * 0.001, originZ: rect.cz * 0.001 } : null
      }) : null;
      hideFrame(floorGroup, o.floorMaterials);
      const walls = layout.walls.map(wl => wallOf(u, rect, layout, wl));
@@ -1337,9 +1345,10 @@ window.HouseModel = (() => {
      const roofGroup = build ? RoofModel.buildUnit3D(ur, {
        materials: o.roofMaterials,
        osbVisible: shows('beplating'),
-        dakleerVisible: shows('gevel'),
+        dakleerVisible: shows('dakbedekking'),
        ceilingMaterial: state.settings.interiorPaint && shows('afwerking') && o.roofMaterials ? o.roofMaterials.ceilingMaterial : null
      }) : null;
      hideFrame(roofGroup, o.roofMaterials);
      const ext = coverExt[u.id];
      if (roofGroup && ext && shows('afwerking')) {
        const fz = rect.z0 - ext.f, bz = rect.z1 + ext.b;
@@ -1683,16 +1692,16 @@ window.HouseModel = (() => {
    const lighting = LightingModel.compute(state.settings.lighting, state.settings.roof, units, state.units, roofEdge);
    if (roofEdge && chimneys.length) roofEdge.spots = roofEdge.spots.filter(sp => !ChimneyModel.covers(chimneys, sp.x, sp.z, 60));
    const roofEdgeGroup = build && roofEdge ? RoofModel.buildEdge3D(roofEdge, o.roofMaterials, {
-      edgeVisible: shows('afwerking'), spotsVisible: o.lampenVisible !== false && shows('afwerking')
+      edgeVisible: shows('afwerking'), spotsVisible: shows('lampen')
    }) : null;
    lighting.indoor = LightingModel.computeIndoor(state.settings.lighting, units, interior);
    LightingModel.roomSpots(state.settings.lighting, lighting.indoor, rooms, units);
    RoomModel.lowerSpots(rooms, lighting.indoor);
    const lightingGroup = build ? LightingModel.build3D(lighting.lamps, o.lightingMaterials || LightingModel.createMaterials(), lighting.indoor) : null;
-    if (lightingGroup) lightingGroup.visible = o.lampenVisible !== false && shows('afwerking');
+    if (lightingGroup) lightingGroup.visible = shows('lampen');
    const elektra = ElektraModel.compute(state.settings.elektra, units, interior, lighting, roofEdge, rooms);
-    const elektraGroup = build ? ElektraModel.build3D(elektra, o.elektraMaterials, stage) : null;
+    const elektraGroup = build ? ElektraModel.build3D(elektra, o.elektraMaterials, layers, o.elektraRough) : null;
-    if (elektraGroup) elektraGroup.visible = o.elektraVisible !== false && shows('elektra');
+    if (elektraGroup) elektraGroup.visible = shows('elektra');
    const posts = PostModel.compute(state.settings.roof.posts, units, groundY);
    const postsGroup = build ? PostModel.build3D(posts, o.postMaterials) : null;
@@ -1708,10 +1717,10 @@ window.HouseModel = (() => {
    }) : null;
    const roomsGroup = build ? RoomModel.build3D(rooms) : null;
-    if (roomsGroup) roomsGroup.visible = shows('afwerking');
+    if (roomsGroup) roomsGroup.visible = shows('ruimtes') && shows('afwerking');
    const fixtures = FixtureModel.compute(state.fixtures || [], units);
    const fixturesGroup = build ? FixtureModel.build3D(fixtures) : null;
-    if (fixturesGroup) fixturesGroup.visible = shows('afwerking');
+    if (fixturesGroup) fixturesGroup.visible = shows('inrichting');
    return { rects, seams, overlaps: overlappingPairs(rects), units, interior, roofEdge, roofEdgeGroup, lighting, lightingGroup, elektra, elektraGroup, sandwich, sandwichGroup, posts, postsGroup, chimneys, chimneysGroup, rooms, roomsGroup, fixtures, fixturesGroup };
  }
@@ -324,32 +324,41 @@ window.LightingModel = (() => {
  const OUTDOOR = { lamp: 1.1, spot: 0.9, angle: 0.62, penumbra: 0.85 };
  const INDOOR = { intensity: 1.4, angle: 1.3, penumbra: 0.9, reach: 1.12, decay: 1.0 };
  const DAY_OUTDOOR_FACTOR = 0.35;
-  function buildLights3D(lamps, spots, spotY, indoor, o) {
+  // Lichtbronnen in meters: positie, richting (genormaliseerd), halve kegelhoek; gedeeld door 3D en render-export.
-    const toM = 0.001;
+  function lightSources(lamps, spots, spotY, indoor) {
-    const fo = (o && o.outdoorFactor !== undefined) ? o.outdoorFactor : 1;
+    const toM = 0.001, out = [];
-    const group = new THREE.Group();
+    const add = (kind, x, y, z, tx, ty, tz, intensity, angle, distance, decay, penumbra, ref) => {
-    const add = (x, y, z, tx, ty, tz, intensity, angle, distance, decay, penumbra, ref) => {
+      const len = Math.hypot(tx, ty, tz) || 1;
-      const light = new THREE.SpotLight(0xffd9a0, intensity, distance, angle, penumbra, decay);
+      out.push({ kind, x, y, z, dir: { x: tx / len, y: ty / len, z: tz / len }, intensity, angle, distance, decay, penumbra, ref });
      light.userData.ref = ref;
      light.position.set(x, y, z);
      light.target.position.set(x + tx, y + ty, z + tz);
      group.add(light);
      group.add(light.target);
    };
    const tilt = Math.tan(OUTDOOR.angle);
    lamps.forEach(l => {
      const x = l.x * toM + l.normal.x * 0.12, z = l.z * toM + l.normal.z * 0.12, y = l.y * toM;
      const nx = l.normal.x * tilt, nz = l.normal.z * tilt;
-      if (l.direction !== 'up') add(x, y - 0.09, z, nx, -1, nz, OUTDOOR.lamp * fo, OUTDOOR.angle, 4.5, 1.5, OUTDOOR.penumbra, l);
+      if (l.direction !== 'up') add('wandlamp', x, y - 0.09, z, nx, -1, nz, OUTDOOR.lamp, OUTDOOR.angle, 4.5, 1.5, OUTDOOR.penumbra, l);
-      if (l.direction !== 'down') add(x, y + 0.09, z, nx, 1, nz, OUTDOOR.lamp * fo, OUTDOOR.angle, 4.5, 1.5, OUTDOOR.penumbra, l);
+      if (l.direction !== 'down') add('wandlamp', x, y + 0.09, z, nx, 1, nz, OUTDOOR.lamp, OUTDOOR.angle, 4.5, 1.5, OUTDOOR.penumbra, l);
    });
    (spots || []).forEach(p => {
      const n = p.normal || { x: 0, z: 0 }, len = Math.hypot(n.x, n.z) || 1;
-      add(p.x * toM, (p.y !== undefined ? p.y : spotY) * toM - 0.02, p.z * toM, n.x / len * tilt, -1, n.z / len * tilt, OUTDOOR.spot * fo, OUTDOOR.angle, 5.5, 1.5, OUTDOOR.penumbra, p);
+      add('dakrandspot', p.x * toM, (p.y !== undefined ? p.y : spotY) * toM - 0.02, p.z * toM, n.x / len * tilt, -1, n.z / len * tilt, OUTDOOR.spot, OUTDOOR.angle, 5.5, 1.5, OUTDOOR.penumbra, p);
    });
    (indoor || []).forEach(p => {
      const drop = (p.y - p.floorY) * toM;
-      add(p.x * toM, p.y * toM - 0.02, p.z * toM, 0, -1, 0, INDOOR.intensity, INDOOR.angle, drop * INDOOR.reach, INDOOR.decay, INDOOR.penumbra, p);
+      add('binnenspot', p.x * toM, p.y * toM - 0.02, p.z * toM, 0, -1, 0, INDOOR.intensity, INDOOR.angle, drop * INDOOR.reach, INDOOR.decay, INDOOR.penumbra, p);
    });
    return out;
  }
  function buildLights3D(lamps, spots, spotY, indoor, o) {
    const fo = (o && o.outdoorFactor !== undefined) ? o.outdoorFactor : 1;
    const group = new THREE.Group();
    lightSources(lamps, spots, spotY, indoor).forEach(s => {
      const light = new THREE.SpotLight(0xffd9a0, s.kind === 'binnenspot' ? s.intensity : s.intensity * fo, s.distance, s.angle, s.penumbra, s.decay);
      light.userData.ref = s.ref;
      light.position.set(s.x, s.y, s.z);
      light.target.position.set(s.x + s.dir.x, s.y + s.dir.y, s.z + s.dir.z);
      group.add(light);
      group.add(light.target);
    });
    if (o && o.walls) group.add(buildWash3D(lamps, spots, spotY, o.walls, o.groundY || 0, fo));
    return group;
@@ -450,5 +459,5 @@ window.LightingModel = (() => {
    return group;
  }
-  return { DEFAULT_SETTINGS, MODES, DIRECTIONS, WALL_OVERRIDES, createDefaultUnitLighting, DAY_OUTDOOR_FACTOR, normalizeSettings, compute, computeIndoor, roomSpots, applySwitches, unitInnerRect, freeIntervals, createMaterials, build3D, buildLights3D };
+  return { DEFAULT_SETTINGS, MODES, DIRECTIONS, WALL_OVERRIDES, createDefaultUnitLighting, DAY_OUTDOOR_FACTOR, normalizeSettings, compute, computeIndoor, roomSpots, applySwitches, unitInnerRect, freeIntervals, createMaterials, build3D, lightSources, buildLights3D };
 })();
@@ -751,8 +751,8 @@ window.WallModel = (() => {
    function build3D(CONFIG, calcData, opts) {
      const { woodMaterial, spaanplaatMaterial, doekMaterial, cementplaatMaterial, battenMaterial } = opts.materials;
      const buitenMateriaal = opts.buitenMateriaal || 'vochtdoek';
-      const stage = BuildStages.clamp(opts.stage);
+      const layers = ViewLayers.normalize(opts.layers);
-      const show = (key) => BuildStages.shows(stage, key);
+      const show = (key) => layers[key];
      const spaanplaatVisible = opts.spaanplaatVisible !== false && show('beplating');
      const buitenVisible = opts.buitenVisible !== false;
      const cladding = opts.cladding || 'horizontaal';
@@ -1311,7 +1311,7 @@ window.WallModel = (() => {
        }
      }
-      if (show('gevel') && window.KozijnModel) {
+      if (show('kozijnen') && window.KozijnModel) {
        const sh = CONFIG.sheathingThick, half = CONFIG.studDepth / 2;
        const exterior = buitenMateriaal === 'vochtdoek' || buitenMateriaal === 'cementplaat';
        const place = exterior ? { zOut: half + sh, depth: KozijnModel.PROFILE.depth, exterior: true }
@@ -1384,6 +1384,7 @@ window.WallModel = (() => {
          }
        });
      }
      if (!show('regelwerk')) ViewLayers.hideByMaterial(wallGroup3D, [woodMaterial]);
      return {
        group: wallGroup3D,
@@ -6,7 +6,10 @@
 */
 const WALL_TEMPLATE = `
-  <div id="app-container">
+  <div id="app-container" class="ed-app">
   <div class="ed-main">
    <div class="ed-toolbar" id="wall-toolbar"></div>
    <div class="ed-views">
    <div id="left-column">
      <div id="pane-2d-container">
        <div class="pane-2d-sub pane-2d-primary" id="pane-2d-front">
@@ -23,9 +26,17 @@ const WALL_TEMPLATE = `
            <canvas id="canvas-2d-side"></canvas>
          </div>
        </div>
      </div>
    </div>
    <div id="right-column">
      <div id="pane-3d">
        <div class="pane-label">3D</div>
      </div>
    </div>
    </div>
   </div>
-      <div id="control-panel">
+      <div id="control-panel" class="ed-panel">
        <div class="io-toolbar">
          <input type="file" id="file-import-json" accept="application/json" style="display:none;">
          <span id="io-status" class="io-status"></span>
@@ -34,6 +45,7 @@ const WALL_TEMPLATE = `
          <button class="tab-btn active" data-tab="tab-wall"><i class="bi bi-rulers"></i> Opbouw</button>
          <button class="tab-btn" data-tab="tab-opening"><i class="bi bi-door-open"></i> Openingen</button>
          <button class="tab-btn" data-tab="tab-materials"><i class="bi bi-layers"></i> Materiaal</button>
          <button class="tab-btn" data-tab="tab-specs"><i class="bi bi-clipboard-data"></i> Resultaat</button>
        </div>
        <!-- TAB 1: WAND -->
@@ -104,10 +116,6 @@ const WALL_TEMPLATE = `
                <div><input type="number" id="inp-max-sp" value="480" step="10" min="150" max="1500"><span class="unit">mm</span></div>
              </div>
              <div class="divider"></div>
              <div class="result-row"><span>Verticale balken</span><span data-spec="vert-beams" class="highlight">-</span></div>
              <div class="result-row"><span>Horizontale balken</span><span data-spec="horiz-beams" class="highlight">-</span></div>
              <div class="result-row"><span>Dakhelling</span><span data-spec="roof-angle" class="highlight">-</span></div>
            </div>
          </div>
        </div>
@@ -138,17 +146,10 @@ const WALL_TEMPLATE = `
          </div>
        </div>
      </div>
    </div>
    <div id="right-column">
      <div id="pane-3d">
        <div class="pane-label">3D</div>
        <div class="toolbar-3d" id="wall-toolbar-3d"></div>
      </div>
        <div id="tab-specs" class="tab-content">
      <div id="specs-panel-3d">
-        <div class="controls-grid">
+        <div>
          <div>
            <div class="spec-section">
              <h1><i class="bi bi-columns-gap"></i> Balken</h1>
@@ -188,6 +189,7 @@ const WALL_TEMPLATE = `
      </div>
    </div>
  </div>
 </div>
  <div id="wall-project-overlay">
    <div id="wall-project-modal">
@@ -218,8 +220,8 @@ const WALL_TEMPLATE = `
        </div>
      </div>
      <div class="modal-footer">
-        <button type="button" id="wall-project-cancel" class="io-btn">Annuleren</button>
+        <button type="button" id="wall-project-cancel" class="ui-btn">Annuleren</button>
-        <button type="button" id="wall-project-save" class="material-toggle-btn active" style="flex:none; padding:6px 18px;">Opslaan</button>
+        <button type="button" id="wall-project-save" class="ui-btn ui-btn-primary">Opslaan</button>
      </div>
    </div>
  </div>
@@ -333,13 +335,8 @@ function mountWallEditor(container, callbacks) {
      updateAll();
    }
-    function toggleFullscreen3D() {
+    function setView(mode) {
-      UI.cycle3D(document.getElementById('app-container'));
+      UI.setView(document.getElementById('app-container'), mode);
      requestAnimationFrame(onWindowResize);
    }
    function toggleFullscreen2D() {
      UI.toggle2D(document.getElementById('app-container'));
      requestAnimationFrame(onWindowResize);
    }
@@ -1279,14 +1276,13 @@ function mountWallEditor(container, callbacks) {
    const wallMaterials = WallModel.createMaterials();
    // Alleen knoppen met data-material/-cladding: de "Opslaan"-knop van Project eigenschappen heeft ook de klasse material-toggle-btn.
    let buitenMateriaal = 'vochtdoek';
    let cladding = 'horizontaal';
    let trasraam = null;
    let stone = null;
    let stuc = null;
    let rabatColor = null;
-    let stage = BuildStages.FINAL;
+    let layers = ViewLayers.all();
    function syncMaterialButtons() {
      document.querySelectorAll('.material-toggle-btn[data-material]').forEach(b => b.classList.toggle('active', b.dataset.material === buitenMateriaal));
      document.querySelectorAll('.material-toggle-btn[data-cladding]').forEach(b => b.classList.toggle('active', b.dataset.cladding === cladding));
@@ -1303,13 +1299,17 @@ function mountWallEditor(container, callbacks) {
    let spaanplaatVisible = true;
    let buitenVisible = true;
-    createViewFilter(document.getElementById('wall-toolbar-3d'), [
+    const toolbar = document.getElementById('wall-toolbar');
-      { key: 'binnen', label: 'Beplating binnenzijde' },
+    toolbar.innerHTML = `<div class="tb-group tb-tools">${UI.tb('Spiegelen', 'symmetry-vertical', 'data-wt="mirror" title="Horizontaal spiegelen (Shift+H)"')}</div>
-      { key: 'buiten', label: 'Beplating buitenzijde' }
+      <div class="tb-spacer"></div><div class="tb-group tb-view"></div>${UI.tbSep()}${UI.viewSeg('split')}`;
-    ], (v) => {
+    toolbar.querySelector('[data-wt="mirror"]').addEventListener('click', () => mirrorHorizontal());
-      spaanplaatVisible = v.binnen;
+    toolbar.querySelectorAll('[data-view]').forEach(b => b.addEventListener('click', () => setView(b.dataset.view)));
-      buitenVisible = v.buiten;
+    const viewGroup = toolbar.querySelector('.tb-view');
-      update3DScene();
+    ViewLayers.createMenu(viewGroup, {
      layers, keys: ['regelwerk', 'beplating', 'doek', 'latwerk', 'gevel', 'kozijnen', 'afwerking'],
      onChange: (l) => { layers = l; update3DScene(); },
      extras: [{ key: 'binnen', label: 'Beplating binnenzijde' }, { key: 'buiten', label: 'Beplating buitenzijde' }],
      onExtra: (v) => { spaanplaatVisible = v.binnen; buitenVisible = v.buiten; update3DScene(); }
    });
    let skyMode = Skybox.getMode();
    const skyEnv = Skybox.createEnvironment(scene);
@@ -1317,15 +1317,14 @@ function mountWallEditor(container, callbacks) {
      skyEnv.fitTo(wallGroup3D, 0);
      Skybox.apply(skyMode, { env: skyEnv, grid, controls, sun: dirLight, ambient, base: { ambient: 0.6, sun: 0.8 }, shadowRoot: wallGroup3D });
    };
-    Skybox.createToggle(document.getElementById('wall-toolbar-3d'), (m) => { skyMode = m; applySky(); });
+    Skybox.createToggle(viewGroup, (m) => { skyMode = m; applySky(); });
    BuildStages.createBar(pane3D, stage, (st) => { stage = st; update3DScene(); });
    let lastWallStats = null;
    function update3DScene() {
      if (wallGroup3D) scene.remove(wallGroup3D);
      const result = WallModel.build3D(CONFIG, calcData, {
-        materials: wallMaterials, buitenMateriaal, cladding, trasraam, stone, stuc, rabatColor, spaanplaatVisible, buitenVisible, stage
+        materials: wallMaterials, buitenMateriaal, cladding, trasraam, stone, stuc, rabatColor, spaanplaatVisible, buitenVisible, layers
      });
      wallGroup3D = result.group;
      lastWallStats = result.stats;
@@ -1419,8 +1418,8 @@ function mountWallEditor(container, callbacks) {
      exportDesign,
      triggerImport,
      mirrorHorizontal,
-      toggleFullscreen3D,
+      setView,
-      toggleFullscreen2D,
+      viewState: () => ({ view: UI.viewOf(document.getElementById('app-container')) }),
      openProjectProperties,
      getStateJson: getPureState,
      loadStateJson: applyPureState