/*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
/* ============================================================
   HUISSTIJL Van Emous — kleuren als CSS-variabelen (bron: SCSS-variabelen
   $van-emous-blue / -orange / -ultra-light, $nav-link-color, $primary).
   De bediening (menu's, panelen, navigatie) is licht; de 2D-/3D-weergaven
   houden een donkere achtergrond (--viewport-bg), omdat de canvas-tekeningen
   daar lichte lijnen/teksten op gebruiken.
   ============================================================ */
:root {
  --van-emous-blue: #dce4ee;
  --van-emous-orange: #b95913;
  --van-emous-ultra-light: #f9faf5;
  --nav-link-color: #212121;
  --primary: var(--van-emous-orange);

  --primary-hover: #9c4a0f;
  --primary-soft: rgba(185, 89, 19, 0.10);
  --primary-on-dark: #e8883d;   /* oranje dat leesbaar blijft op de donkere weergaven */
  --text: var(--nav-link-color);
  --text-muted: #5b6673;
  --text-faint: #8a94a0;
  --surface: #ffffff;
  --border: #c5ced9;
  --border-soft: #e2e7ee;
  --viewport-bg: #1a1a1a;
  --danger: #b3261e;
  --danger-soft: #fdecea;
  --ok: #2e7d32;
  --ok-soft: #e8f3e9;
}

    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      overflow: hidden;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background-color: var(--van-emous-ultra-light);
      color: var(--text);
    }


    #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;
      flex-direction: column;
      min-height: 0;
      width: 100%;
    }

    .pane-2d-sub {
      flex: 1;
      position: relative;
      width: 100%;
      min-height: 0;
      background: var(--viewport-bg);
    }
    .pane-2d-sub + .pane-2d-sub { border-top: 1px solid var(--border); }
    .pane-2d-primary { flex: 2; } /* primair aanzicht (bijv. vooraanzicht bij een wand) krijgt meer ruimte */
    .pane-2d-sub canvas.interactive { cursor: default; }
    .pane-2d-row { display: flex; flex-direction: row; padding: 0; }
    .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);
      border-bottom: 1px solid var(--border);
    }
    .io-toolbar {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px 10px;
      background: var(--van-emous-ultra-light);
      border-bottom: 1px solid var(--border-soft);
    }
    .io-btn {
      background: var(--surface);
      border: 1px solid var(--border);
      color: var(--text);
      padding: 5px 10px;
      border-radius: 4px;
      font-size: 12px;
      cursor: pointer;
    }
    .io-btn:hover { border-color: var(--primary); color: var(--primary); }
    .io-status { font-size: 11px; color: var(--text-faint); margin-left: auto; }
    .io-status.err { color: var(--danger); }
    .io-status.ok { color: var(--ok); }
    .tab-btn {
      flex: 1;
      padding: 10px;
      background: none;
      border: none;
      border-bottom: 2px solid transparent;
      color: var(--text-muted);
      font-size: 12px;
      font-weight: bold;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      cursor: pointer;
      transition: all 0.2s;
    }
    .tab-btn:hover { color: var(--text); }
    .tab-btn.active {
      color: var(--primary);
      border-bottom: 2px solid var(--primary);
      background: var(--van-emous-ultra-light);
    }

    .tab-content {
      padding: 15px 20px;
      overflow-y: auto;
      flex: 1;
      display: none;
    }
    .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;
      left: 15px;
      background: rgba(0, 0, 0, 0.75);
      padding: 6px 14px;
      border-radius: 4px;
      border: 1px solid #444;
      font-size: 13px;
      font-weight: bold;
      letter-spacing: 0.5px;
      color: var(--primary-on-dark);
      z-index: 10;
      pointer-events: none;
    }

    .controls-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    h1 { font-size: 13px; margin: 0 0 8px 0; color: var(--primary); text-transform: uppercase; letter-spacing: 0.8px; }

    .control-group { display: flex; justify-content: space-between; align-items: center; margin-bottom: 5px; }
    .control-group label { font-size: 12px; color: var(--text-muted); }
    .control-group input, .control-group select {
      width: 96px; background: var(--surface); border: 1px solid var(--border); color: var(--text); padding: 3px 5px; border-radius: 4px; font-size: 12px; text-align: right;
    }
    .control-group select { text-align: left; }
    .control-group input:focus, .control-group select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 2px var(--primary-soft); }

    .btn-toggle {
      width: 100%; padding: 8px; margin-bottom: 12px; background: var(--surface); border: 1px solid var(--primary); color: var(--primary);
      font-weight: bold; border-radius: 4px; cursor: pointer; text-transform: uppercase; font-size: 12px;
    }
    .btn-toggle.active { background: var(--primary); color: #fff; }

    .unit { font-size: 11px; color: var(--text-faint); margin-left: 3px; }
    .divider { border-top: 1px solid var(--border-soft); margin: 8px 0; }
    .result-row { display: flex; justify-content: space-between; font-size: 12px; margin-bottom: 3px; }
    .highlight { color: var(--primary); font-weight: bold; }
    canvas { display: block; width: 100%; height: 100%; }

    /* --- Openingen tab (nieuw) --- */
    .opening-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 6px;
      padding: 10px 12px;
      margin-bottom: 10px;
      position: relative;
    }
    .opening-card.opening-selected { background: var(--primary-soft); border-color: var(--primary); }
    .opening-card.opening-warn {
      border-color: var(--danger);
      box-shadow: 0 0 0 1px var(--danger) inset;
    }
    .opening-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
    }
    .opening-card-title {
      font-size: 12px;
      font-weight: bold;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .opening-remove-btn {
      background: none;
      border: 1px solid #e3b4b0;
      color: var(--danger);
      border-radius: 4px;
      width: 22px;
      height: 22px;
      line-height: 1;
      cursor: pointer;
      font-size: 13px;
    }
    .opening-remove-btn:hover { background: var(--danger-soft); }
    .opening-warning-text {
      font-size: 11px;
      color: var(--danger);
      margin-top: 6px;
    }
    .add-opening-btn {
      width: 100%; padding: 8px; margin-bottom: 12px; background: var(--ok-soft); border: 1px solid var(--ok); color: var(--ok);
      font-weight: bold; border-radius: 4px; cursor: pointer; text-transform: uppercase; font-size: 12px;
    }
    .add-opening-btn:hover { background: #d7ebd9; }
    .global-warning {
      background: var(--danger-soft);
      border: 1px solid var(--danger);
      color: var(--danger);
      border-radius: 4px;
      padding: 8px 10px;
      font-size: 12px;
      margin-bottom: 10px;
    }

    /* --- Specificaties tab (nieuw) --- */
    .spec-section { margin-bottom: 14px; }

    .material-info { font-size: 12px; color: var(--text-muted); line-height: 1.5; margin: 4px 0 10px; }
    .material-toggle-group { display: flex; gap: 8px; margin-bottom: 8px; }
    .material-toggle-btn {
      flex: 1; padding: 10px 8px; background: var(--surface); border: 1px solid var(--border); color: var(--text-muted);
      border-radius: 4px; font-size: 12px; font-weight: bold; text-transform: uppercase;
      letter-spacing: .3px; cursor: pointer;
    }
    .material-toggle-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
    .material-toggle-btn:hover:not(.active) { border-color: var(--primary); color: var(--primary); }
/* ============================================================
   APP SHELL: menubalk, workspace-wrapper, splashscreen, about-modal
   ============================================================ */
html, body { height: 100%; }

#app-bar {
  height: 40px;
  background: var(--van-emous-blue);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 4px;
  position: relative;
  z-index: 100;
  user-select: none;
}
#app-bar .menu-group { position: relative; }
#app-bar .menu-btn {
  background: none; border: none; color: var(--nav-link-color); font-size: 13px;
  padding: 8px 14px; cursor: pointer; border-radius: 4px;
}
#app-bar .menu-btn:hover, #app-bar .menu-btn.open { background: var(--surface); color: var(--primary); }
#app-bar .menu-dropdown {
  position: absolute; top: 100%; left: 0; background: var(--surface); border: 1px solid var(--border);
  border-radius: 0 0 6px 6px; min-width: 220px; display: none; box-shadow: 0 8px 20px rgba(33, 33, 33, .15);
}
#app-bar .menu-dropdown.open { display: block; }
#app-bar .menu-item {
  padding: 9px 16px; font-size: 13px; color: var(--nav-link-color); cursor: pointer; position: relative;
  display: flex; justify-content: space-between; align-items: center;
}
#app-bar .menu-item:hover { background: var(--primary-soft); color: var(--primary); }
#app-bar .menu-hotkey { color: var(--text-faint); font-size: 11px; margin-left: 16px; }
#app-bar .menu-item.disabled { color: #b0b8c2; cursor: not-allowed; pointer-events: none; }
#app-bar .menu-item.disabled:hover { background: none; color: #b0b8c2; }
#app-bar .submenu {
  position: absolute; left: 100%; top: -1px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; min-width: 200px; display: none; box-shadow: 0 8px 20px rgba(33, 33, 33, .15);
}
#app-bar .menu-item:hover .submenu, #app-bar .submenu.open { display: block; }
#app-bar .submenu .menu-item { color: var(--nav-link-color); }
#app-bar .submenu .menu-item:hover { background: var(--primary-soft); color: var(--primary); }

#app-bar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; padding-right: 6px; }
#app-version-tag { font-size: 11px; color: var(--text-muted); }
#btn-about {
  background: var(--surface); border: 1px solid var(--border); color: var(--nav-link-color); font-size: 12px;
  padding: 5px 10px; border-radius: 4px; cursor: pointer;
}
#btn-about:hover { border-color: var(--primary); color: var(--primary); }

#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); }

#workspace { width: 100vw; height: calc(100vh - 40px - 34px); position: relative; }
#workspace-empty {
  height: 100%; display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: 14px; flex-direction: column; gap: 10px;
}

/* --- Splashscreen (blijft donker: het logo bevat lichte delen) --- */
#splash-screen {
  position: fixed; inset: 0; background: #0d0d0d; z-index: 9999;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; animation: splashFadeOut .5s ease-in-out 3.8s forwards;
}
#splash-logo { width: 320px; height: auto; }
#splash-screen .splash-version { font-size: 13px; color: #888; margin-top: 14px; letter-spacing: .5px; }
#splash-screen .splash-name { color: #eee; font-weight: bold; letter-spacing: 1px; }
@keyframes splashFadeOut { 0% { opacity: 1; } 100% { opacity: 0; visibility: hidden; pointer-events: none; } }

/* --- "Over deze software"-modal --- */
#about-overlay {
  position: fixed; inset: 0; background: rgba(33, 33, 33, .45); z-index: 500;
  display: none; align-items: center; justify-content: center;
}
#about-overlay.open { display: flex; }
#about-modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 22px 26px;
  max-width: 680px; width: 92%; max-height: 90vh; display: flex; flex-direction: column;
  box-shadow: 0 12px 30px rgba(33, 33, 33, .2);
}
#about-modal .about-logo { width: 220px; height: auto; margin-bottom: 14px; }
#about-modal .about-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
#about-modal .about-head h2 { font-size: 20px; letter-spacing: .5px; }
#about-modal .about-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 11px; color: var(--text-faint); }
#about-modal .license-box { overflow-y: auto; min-height: 0; flex: 1; }
#about-modal .license-box h3 { font-size: 14px; color: var(--text); margin: 0 0 8px; }
#about-modal .license-box h4 { font-size: 12px; color: var(--primary); margin: 12px 0 4px; text-transform: uppercase; letter-spacing: .5px; }
#about-modal .license-box p { font-size: 12px; color: var(--text-muted); margin: 0 0 6px; line-height: 1.55; }
#about-modal h2 { margin: 0 0 6px; font-size: 15px; color: var(--primary); }
#about-modal .about-version { font-size: 12px; color: var(--text-muted); }
#about-modal p { font-size: 13px; color: var(--text); line-height: 1.6; margin: 0 0 10px; }
#about-modal .license-box {
  background: var(--van-emous-ultra-light); border: 1px solid var(--border-soft); border-radius: 6px; padding: 10px 12px;
  font-size: 12px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px;
}
#about-modal .about-close {
  background: var(--surface); border: 1px solid var(--border); color: var(--text); padding: 6px 14px;
  border-radius: 4px; font-size: 13px; cursor: pointer; float: right;
}
#about-modal .about-close:hover { border-color: var(--primary); color: var(--primary); }

#wall-project-overlay, #house-project-overlay {
  position: fixed; inset: 0; background: rgba(33, 33, 33, .45); z-index: 500;
  display: none; align-items: center; justify-content: center;
}
#wall-project-overlay.open, #house-project-overlay.open { display: flex; }
#wall-project-modal, #house-project-modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 20px 24px;
  width: 540px; max-width: 92%; box-shadow: 0 12px 30px rgba(33, 33, 33, .2);
}
#wall-project-modal .modal-header, #house-project-modal .modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
#wall-project-modal .modal-header h2, #house-project-modal .modal-header h2 { margin: 0; font-size: 15px; color: var(--primary); }
#wall-project-modal .modal-close-x, #house-project-modal .modal-close-x {
  background: none; border: none; color: var(--text-faint); font-size: 19px; line-height: 1; cursor: pointer; padding: 0 4px;
}
#wall-project-modal .modal-close-x:hover, #house-project-modal .modal-close-x:hover { color: var(--danger); }
#wall-project-modal .modal-footer, #house-project-modal .modal-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px; }
#wall-project-modal .control-group input, #house-project-modal .control-group input { width: 150px; text-align: left; }

#new-overlay {
  position: fixed; inset: 0; background: rgba(33, 33, 33, .45); z-index: 500;
  display: none; align-items: center; justify-content: center;
}
#new-overlay.open { display: flex; }
#new-modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 22px 26px;
  box-shadow: 0 12px 30px rgba(33, 33, 33, .2);
}
#new-modal h2 { margin: 0 0 16px; font-size: 15px; color: var(--primary); }
.new-options { display: flex; gap: 14px; }
.new-option {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: var(--van-emous-ultra-light); border: 1px solid var(--border); border-radius: 8px; padding: 18px 22px;
  color: var(--nav-link-color); cursor: pointer; width: 110px;
}
.new-option svg { width: 40px; height: 40px; }
.new-option span { font-size: 13px; }
.new-option:hover:not(.disabled) { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.new-option.disabled { opacity: .4; cursor: not-allowed; }

/* ============================================================
   VLOER-EDITOR (floor.js) — hergebruikt bestaande klassen als
   .opening-card/.add-opening-btn/.global-warning/.controls-grid/.control-group/
   .tab-bar/.tab-btn/.tab-content/.result-row/.highlight/.divider (identiek
   aan de wand-editor, dus geen dubbele stijl-definities nodig).
   ============================================================ */
#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; }

/* ============================================================
   WONING-EDITOR (house/house.js) — navigatieboom links, actief onderdeel
   rechts (overzicht of de ECHTE wand-/vloer-editor in #house-part-host).
   ============================================================ */
#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; }
.hn-item {
  display: flex; justify-content: space-between; align-items: baseline; gap: 6px;
  padding: 5px 8px; border-radius: 4px; font-size: 12px; color: var(--nav-link-color); cursor: pointer;
}
.hn-item:hover { background: rgba(255, 255, 255, .6); color: var(--primary); }
.hn-item.active { background: var(--surface); color: var(--primary); box-shadow: inset 3px 0 0 var(--primary); }
.hn-unit { font-weight: bold; text-transform: uppercase; letter-spacing: .5px; }
.hn-static { cursor: default; }
.hn-static:hover { background: none; color: var(--nav-link-color); }
.hn-sub { padding-left: 18px; }
.hn-meta { font-size: 10px; color: var(--text-muted); font-weight: normal; text-transform: none; letter-spacing: 0; text-align: right; }
.hn-removed span:first-child { text-decoration: line-through; color: var(--text-faint); }
.hn-item.disabled { color: #9aa4b0; cursor: not-allowed; }
.hn-item.disabled:hover { background: none; color: #9aa4b0; }
.hn-actions { display: flex; gap: 6px; margin-top: 10px; }
.hn-actions .io-btn { flex: 1; }
.hn-soon { margin-top: 10px; border-top: 1px solid var(--border); padding-top: 6px; }
#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-col { flex: 1; display: flex; flex-direction: column; min-height: 0; min-width: 0; }
.ho-left { border-right: 1px solid var(--border); }
#house-overview.fullscreen-3d .ho-left { display: none; }
#house-overview.fullscreen-2d .ho-right { display: none; }
.ho-pane { flex: 1; position: relative; min-height: 0; background: var(--viewport-bg); }
.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-props, #ho-specs {
  height: 340px; flex: none; background: var(--van-emous-ultra-light); border-top: 1px solid var(--border); overflow-y: auto; padding: 15px 20px;
}
#ho-specs .controls-grid { grid-template-columns: 1fr 1fr; }
.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); }

/* --- Weergave-filter (core/view-filter.js): dropdown met vinkjes op de 3D-weergave --- */
.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; }

/* ============================================================
   UI-KIT (core/ui-kit.js): velden, schakelaars, secties, tabbladen,
   specificatie-kaarten. Iconen: Bootstrap Icons (css/vendor).
   ============================================================ */
.bi { line-height: 1; vertical-align: -0.125em; }
.ui-section { margin-bottom: 14px; }
.ui-section h2, .ui-spec-card h2 {
  display: flex; align-items: center; gap: 7px; margin: 0 0 8px; font-size: 12px; font-weight: 600;
  color: var(--primary); text-transform: uppercase; letter-spacing: .6px;
}
.ui-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 28px; }
.ui-field { display: flex; justify-content: space-between; align-items: center; gap: 10px; min-height: 28px; }
.ui-field label { font-size: 12.5px; color: var(--text); display: flex; align-items: center; gap: 5px; }
.ui-field.is-disabled label { color: var(--text-faint); }
.ui-control { display: flex; align-items: center; flex: none; }
.ui-control input[type=number], .ui-control select {
  width: 118px; background: var(--surface); border: 1px solid var(--border); color: var(--text);
  padding: 4px 6px; border-radius: 4px; font-size: 12.5px; font-family: inherit;
}
.ui-control input[type=number] { text-align: right; }
.ui-control input:focus, .ui-control select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 2px var(--primary-soft); }
.ui-control input:disabled { opacity: .55; background: var(--border-soft); cursor: not-allowed; }
.ui-unit { width: 26px; margin-left: 5px; font-size: 11px; color: var(--text-faint); }
.ui-hint { color: var(--text-faint); font-size: 11px; cursor: help; }
.ui-hint:hover { color: var(--primary); }
.ui-switch { position: relative; display: inline-block; width: 36px; height: 20px; margin-right: 82px; }
.ui-switch input { opacity: 0; width: 0; height: 0; }
.ui-switch span { position: absolute; inset: 0; background: #c9d1db; border-radius: 20px; cursor: pointer; transition: background .15s; }
.ui-switch span::before { content: ''; position: absolute; width: 14px; height: 14px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: transform .15s; }
.ui-switch input:checked + span { background: var(--primary); }
.ui-switch input:checked + span::before { transform: translateX(16px); }
.ui-switch input:focus-visible + span { box-shadow: 0 0 0 2px var(--primary-soft); }
.ui-info, .ui-warn { display: flex; gap: 8px; align-items: flex-start; font-size: 12px; line-height: 1.5; border-radius: 4px; padding: 7px 10px; margin: 6px 0 10px; }
.ui-info { color: var(--text-muted); background: var(--surface); border: 1px solid var(--border-soft); }
.ui-warn { color: var(--danger); background: var(--danger-soft); border: 1px solid var(--danger); }
.ui-info .bi, .ui-warn .bi { margin-top: 2px; }
.ui-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ui-btn {
  display: inline-flex; align-items: center; gap: 6px; background: var(--surface); border: 1px solid var(--border);
  color: var(--text); padding: 5px 11px; border-radius: 4px; font-size: 12px; cursor: pointer; font-family: inherit;
}
.ui-btn:hover { border-color: var(--primary); color: var(--primary); }
.ui-btn.ui-btn-danger { color: var(--danger); border-color: #e3b4b0; }
.ui-btn.ui-btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.ui-btn.ui-btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.ui-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.ui-panel-head h1 { display: flex; align-items: center; gap: 8px; margin: 0; font-size: 14px; }
.ui-panel-head .ui-sub { font-size: 12px; color: var(--text-muted); }

.ui-tab-bar { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin: 0 0 12px; }
.ui-tab {
  display: inline-flex; align-items: center; gap: 6px; background: none; border: none; border-bottom: 2px solid transparent;
  margin-bottom: -1px; padding: 7px 12px; font-size: 12.5px; color: var(--text-muted); cursor: pointer; font-family: inherit;
}
.ui-tab:hover { color: var(--text); }
.ui-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.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; }
.ui-spec-val { font-weight: 600; color: var(--text); text-align: right; font-variant-numeric: tabular-nums; }
.ui-spec-val small { font-weight: normal; color: var(--text-faint); margin-left: 3px; }
.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; }

/* Weergave-cyclus (T): render-only = ook het info-deel onder de 3D weg. */
.render-only #ho-specs, .render-only #specs-panel-3d, .render-only #floor-specs-panel-3d { display: none; }

/* Bestaande editor-panelen (wand/vloer) in dezelfde stijl als de UI-kit. */
.control-group { min-height: 28px; margin-bottom: 3px; gap: 10px; }
.control-group label { font-size: 12.5px; color: var(--text); }
.control-group input, .control-group select { width: 118px; font-size: 12.5px; padding: 4px 6px; font-family: inherit; }
h1 { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 600; letter-spacing: .6px; }
.tab-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; text-transform: none; font-size: 12.5px; letter-spacing: 0; }
.result-row { padding: 3px 0; border-bottom: 1px dashed var(--border-soft); }
.result-row:last-child { border-bottom: none; }
.result-row .highlight { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
#specs-panel-3d .spec-section, #floor-specs-panel-3d .spec-section {
  background: var(--surface); border: 1px solid var(--border-soft); border-radius: 6px; padding: 10px 12px; margin-bottom: 12px;
}
.add-opening-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; text-transform: none; font-size: 12.5px; }
.hn-actions .ui-btn { flex: 1; justify-content: center; }
.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); }

/* Voorvertoning steen trasraam (woning > Gevel) */
.hs-stone-preview { display: block; width: 128px; height: auto; margin: 4px 0 8px; border: 1px solid var(--border, #ccc); border-radius: 3px; }

/* Lopen (first person, derde weergavestand): uitleg onderin de 3D. */
.walk-hint { display: none; position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); padding: 6px 12px; border-radius: 4px;
  background: rgba(0, 0, 0, 0.6); color: #fff; font-size: 12px; pointer-events: none; white-space: nowrap; z-index: 5; }
.walk-hint.show { display: block; }

/* Beeld > Camera: uitleg (geen actie) */
#app-bar .submenu .menu-info { padding: 6px 12px 2px; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted, #8a8f96); }
#app-bar .submenu .menu-help { cursor: default; opacity: .85; }
#app-bar .submenu .menu-help:hover { background: transparent; color: var(--nav-link-color); }