/* ═══════════════════════════════════════════════════════════
   icBIM · App Styles
   Layout, Components, Bootstrap Overrides
   ═══════════════════════════════════════════════════════════ */

/* ─── 1. Reset & Base ────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  height: 100%; overflow: hidden;
  font-family: var(--font);
  font-size: var(--tx-base);
  color: var(--tx-primary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

/* Subtle ambient glow — precision instrument feel */
body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background: var(--ambient-glow);
}

/* ─── 2. Scrollbars ──────────────────────────────────────── */
::-webkit-scrollbar              { width: 4px; height: 4px; }
::-webkit-scrollbar-track        { background: transparent; }
::-webkit-scrollbar-thumb        { background: var(--bd); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover  { background: var(--bd-strong); }
::-webkit-scrollbar-corner       { background: transparent; }

/* ─── 3. Main Grid Layout ────────────────────────────────── */
/* 2 columns only: [rail | viewer].
   Both side panels (left + right) are position:fixed overlays —
   they never affect the grid, so the viewer always fills 1fr.   */
#wrapper {
  display: grid;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-columns: var(--rail-w) 1fr;
  height: 100vh; width: 100vw;
  overflow: hidden;
  position: relative; z-index: 1;
}

/* ─── 4. Topbar ──────────────────────────────────────────── */
#header {
  grid-row: 1; grid-column: 1 / -1;
  display: flex; align-items: center; gap: var(--s2);
  padding: 0 var(--s3) 0 0;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--bd-subtle);
  z-index: 50;
}

.topbar-logo {
  width: var(--rail-w); height: var(--topbar-h);
  display: flex; align-items: center; justify-content: center;
  border-right: 1px solid var(--bd-subtle);
  flex-shrink: 0;
}
.topbar-logo svg { width: 22px; height: 22px; color: var(--accent); }
.topbar-logo img { width: 28px; height: 28px; }

.topbar-app-name {
  font-size: var(--tx-sm); font-weight: 600;
  color: var(--tx-secondary); letter-spacing: 0.06em;
  flex-shrink: 0;
}
.topbar-sep {
  width: 1px; height: 16px; background: var(--bd);
  margin: 0 var(--s2); flex-shrink: 0;
}
#project-name-display {
  font-size: var(--tx-base); font-weight: 500;
  color: var(--tx-primary); flex-shrink: 0;
}
.topbar-spacer { flex: 1; }

#module-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px; border-radius: var(--r-full);
  background: var(--mod-subtle);
  border: 1px solid rgba(245,158,11,0.25);
  font-size: var(--tx-xs); font-weight: 600;
  color: var(--mod); letter-spacing: 0.04em;
  text-transform: uppercase;
}
#module-badge.hidden { display: none; }

.topbar-actions {
  display: flex; align-items: center; gap: var(--s1);
}
#save-status {
  font-size: var(--tx-xs); color: var(--tx-muted);
  padding: 0 var(--s2);
}

/* ─── 5. Icon Rail ───────────────────────────────────────── */
#icon-rail {
  grid-row: 2; grid-column: 1;
  display: flex; flex-direction: column; align-items: center;
  padding: var(--s2) 0;
  background: var(--bg-panel);
  border-right: 1px solid var(--bd-subtle);
  z-index: 40;
  gap: var(--s1);
}
.rail-spacer { flex: 1; }
.rail-separator {
  width: 24px; height: 1px; background: var(--bd-subtle);
  margin: var(--s1) 0;
}

.rail-btn {
  position: relative;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border: none; border-radius: var(--r-md);
  background: transparent; color: var(--tx-muted);
  cursor: pointer; transition: color var(--t-base), background var(--t-base);
  padding: 0;
}
.rail-btn svg { width: 16px; height: 16px; }
.rail-btn:hover { background: var(--bg-hover); color: var(--tx-secondary); }
.rail-btn.active {
  background: var(--accent-subtle);
  color: var(--accent);
}
/* Active indicator line */
.rail-btn.active::before {
  content: '';
  position: absolute; left: -3px; top: 20%; bottom: 20%;
  width: 2px; border-radius: 0 2px 2px 0;
  background: var(--accent);
}
/* Planon module rail button */
.rail-btn.mod-btn.active {
  background: var(--mod-subtle); color: var(--mod);
}
.rail-btn.mod-btn.active::before { background: var(--mod); }

/* Planon panel rail button — Amber accent */
.rail-btn--mod:hover            { color: var(--mod); }
.rail-btn--mod.active           { color: var(--mod); background: var(--mod-subtle); }
.rail-btn--mod.active::before   { background: var(--mod); }

/* Tooltip */
.rail-btn[data-label]::after {
  content: attr(data-label);
  position: absolute; left: calc(100% + 10px);
  background: var(--bg-raised); color: var(--tx-primary);
  border: 1px solid var(--bd); border-radius: var(--r-sm);
  padding: 4px 8px; font-size: var(--tx-xs); font-weight: 500;
  white-space: nowrap; pointer-events: none;
  opacity: 0; transform: translateX(-4px);
  transition: opacity var(--t-base), transform var(--t-base);
  z-index: 100; box-shadow: var(--sh-md);
}
.rail-btn[data-label]:hover::after {
  opacity: 1; transform: translateX(0);
}

/* Icon button (used in topbar, panel headers) */
.icon-btn {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border: none; border-radius: var(--r-md);
  background: transparent; color: var(--tx-secondary);
  cursor: pointer; flex-shrink: 0;
  transition: color var(--t-base), background var(--t-base);
  padding: 0;
}
.icon-btn svg { width: 15px; height: 15px; }
.icon-btn:hover { background: var(--bg-hover); color: var(--tx-primary); }

/* ─── 6. Left Panel ──────────────────────────────────────── */
/* Fixed overlay — sits immediately right of the icon rail.
   Opens/closes via transform so the viewer is never resized.  */
#file-manager {
  position: fixed;
  left: var(--rail-w);
  top: var(--topbar-h);
  bottom: 0;
  width: var(--lpanel-w);
  display: flex; flex-direction: column;
  background: var(--bg-panel);
  border-right: 1px solid var(--bd-subtle);
  box-shadow: var(--sh-panel);
  z-index: 35;
  overflow: hidden;
  transform: translateX(-100%);
  transition: transform var(--t-panel);
  pointer-events: none;
}
#file-manager.open {
  transform: translateX(0);
  pointer-events: auto;
}

/* Resize handle (right edge of left panel) */
#file-resizer {
  position: absolute; right: -1px; top: 0; bottom: 0;
  width: 4px; cursor: col-resize; z-index: 10;
  background: transparent;
  transition: background var(--t-base);
}
#file-resizer:hover, #file-resizer:active { background: var(--accent-subtle); }

.panel-header {
  display: flex; align-items: center;
  padding: 0 var(--s3) 0 var(--s4);
  height: 40px; flex-shrink: 0;
  border-bottom: 1px solid var(--bd-subtle);
  gap: var(--s2);
}
.panel-title {
  font-size: var(--tx-xs); font-weight: 600;
  color: var(--tx-secondary); text-transform: uppercase;
  letter-spacing: 0.07em; flex: 1;
}

/* Panel sections (Files, Structure, Filters, About) */
.panel-section {
  display: flex; flex-direction: column;
  flex: 1; overflow: hidden;
}
.panel-section.hidden { display: none; }

/* Section sub-headers */
.panel-subheader {
  display: flex; align-items: center;
  padding: var(--s2) var(--s3);
  border-bottom: 1px solid var(--bd-dim);
  gap: var(--s2); flex-shrink: 0;
}
.panel-subheader-label {
  font-size: var(--tx-2xs); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--tx-muted); flex: 1;
}
.panel-subheader-actions {
  display: flex; align-items: center; gap: 2px;
}

/* File browser */
#file-browser {
  overflow-y: auto; flex-shrink: 0;
  max-height: 25%;
  border-bottom: 1px solid var(--bd-dim);
}

/* Quick actions in files panel */
.panel-actions {
  display: flex; flex-direction: column; gap: var(--s1);
  padding: var(--s3);
}
.panel-setting {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s2) var(--s3);
  font-size: var(--tx-sm); color: var(--tx-secondary);
  border-top: 1px solid var(--bd-dim);
}

/* Spatial tree / Planon asset tabs */
#file-structure {
  flex: 1; overflow: auto; position: relative;
}
.tab-content-file { padding: 0; }
.tab-content-file.hidden { display: none; }

/* File tree items */
#filetree { width: 100%; border-spacing: 0; font-size: var(--tx-sm); }
#filetree td { padding: 3px 0; cursor: pointer; color: var(--tx-secondary); }
#filetree td:hover { background: var(--bg-hover); }
.td-filetree {
  text-align: left; font-size: var(--tx-sm); font-weight: 500;
  color: var(--tx-secondary);
}
.td-filetree::before {
  content: "\276F"; margin: 0 6px 0 4px; display: inline-block;
  transform: rotate(90deg); transition: transform var(--t-base);
  color: var(--tx-muted); font-size: 9px;
}
.td-filetree-up::before { transform: rotate(0deg); }
.highlight td {
  color: var(--accent) !important; background: var(--accent-dim);
}

/* ─── 7. Panel Tab Bars ──────────────────────────────────── */
.panel-tabs {
  display: flex; flex-shrink: 0;
  border-bottom: 1px solid var(--bd-subtle);
}
.panel-tab {
  flex: 1; padding: var(--s2) var(--s3);
  font-size: var(--tx-xs); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--tx-muted);
  background: transparent; border: none; cursor: pointer;
  position: relative; transition: color var(--t-base);
}
.panel-tab:hover { color: var(--tx-secondary); }
.panel-tab.active { color: var(--tx-primary); }
.panel-tab.active::after {
  content: ''; position: absolute;
  bottom: 0; left: var(--s3); right: var(--s3); height: 2px;
  background: var(--accent); border-radius: 2px 2px 0 0;
}

/* ── License table ─────────────────────────────────────── */
.license-table {
  width: 100%; border-collapse: collapse;
  font-size: var(--tx-xs);
}
.license-table th {
  text-align: left; padding: var(--s2) var(--s2);
  color: var(--tx-muted); font-weight: 600;
  text-transform: uppercase; letter-spacing: .05em;
  border-bottom: 1px solid var(--bd-subtle);
}
.license-table td {
  padding: var(--s2) var(--s2);
  color: var(--tx-secondary);
  border-bottom: 1px solid var(--bd-dim);
}
.license-table td:last-child {
  color: var(--accent); font-weight: 500; white-space: nowrap;
}

/* Tab bar at bottom of panels */
.tab-bar {
  display: flex; flex-shrink: 0;
  border-top: 1px solid var(--bd-subtle);
}
.tab-bar .tab-button {
  flex: 1; padding: 6px var(--s3);
  font-size: var(--tx-xs); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--tx-muted);
  background: transparent; border: none; cursor: pointer;
  transition: color var(--t-base), background var(--t-base);
}
.tab-bar .tab-button:hover { color: var(--tx-secondary); background: var(--bg-hover); }
.tab-bar .tab-button.active { color: var(--accent); }

/* ─── 8. Viewer ──────────────────────────────────────────── */
#model-viewer {
  grid-row: 2; grid-column: 2;
  position: relative; overflow: hidden;
  background: var(--bg-deep);
}

/* H-key hold-to-hide cursor (eye with strike-through) */
#model-viewer.hide-mode,
#model-viewer.hide-mode canvas {
  cursor: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="%2322d3ee" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8S1 12 1 12z"/><circle cx="12" cy="12" r="3"/><line x1="2" y1="2" x2="22" y2="22" stroke="%23ef4444" stroke-width="2.5"/></svg>') 12 12, not-allowed;
}

/* Empty state — blueprint grid */
#empty-state {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; /* allow clicks through to the Three.js canvas */
  z-index: 5;
}
#empty-state.hidden { display: none; }
#empty-state::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--bd-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--bd-dim) 1px, transparent 1px);
  background-size: 32px 32px;
}
.empty-state-content {
  position: relative; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--s4);
  pointer-events: auto; /* restore pointer events for buttons inside */
}
.empty-icon { width: 48px; height: 48px; color: var(--tx-muted); }
.empty-state-content h2 {
  font-size: var(--tx-xl); font-weight: 600;
  color: var(--tx-secondary); margin: 0;
}
.empty-state-content p {
  font-size: var(--tx-base); color: var(--tx-muted); margin: 0;
}
.empty-actions { display: flex; gap: var(--s3); flex-wrap: wrap; justify-content: center; }

/* ─── 9. Floating Toolbar ────────────────────────────────── */
#floating-toolbar {
  position: absolute; top: var(--s4); left: 50%;
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 1px;
  padding: 3px;
  background: var(--bg-raised);
  border: 1px solid var(--bd);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-float);
  z-index: 20;
  backdrop-filter: blur(8px);
}

.ftb-group { display: flex; align-items: center; gap: 1px; }
.ftb-separator {
  width: 1px; height: 20px; background: var(--bd);
  margin: 0 3px;
}

.ftb-btn {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border: none; border-radius: var(--r-sm);
  background: transparent; color: var(--tx-secondary);
  cursor: pointer; transition: all var(--t-base);
  padding: 0;
}
.ftb-btn svg { width: 14px; height: 14px; }
.ftb-btn:hover { background: var(--bg-hover); color: var(--tx-primary); }
.ftb-btn.active, .ftb-btn:has(input:checked) {
  background: var(--accent-subtle); color: var(--accent);
}

/* Filter select in floating toolbar */
.ftb-select {
  height: 30px; padding: 0 var(--s2);
  background: transparent; color: var(--tx-secondary);
  border: none; border-radius: var(--r-sm);
  font-family: var(--font); font-size: var(--tx-sm);
  cursor: pointer; min-width: 100px;
  transition: background var(--t-base), color var(--t-base);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236b7499'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 6px center;
  padding-right: 20px;
}
.ftb-select:hover { background-color: var(--bg-hover); color: var(--tx-primary); }
.ftb-select option { background: var(--bg-raised); color: var(--tx-primary); }

/* Toggle (checkbox in toolbar) */
.ftb-toggle {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-sm); cursor: pointer;
  color: var(--tx-muted); transition: all var(--t-base);
  position: relative;
}
.ftb-toggle svg { width: 14px; height: 14px; pointer-events: none; }
.ftb-toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.ftb-toggle:hover { background: var(--bg-hover); color: var(--tx-secondary); }
.ftb-toggle:has(input:checked) { background: var(--accent-subtle); color: var(--accent); }

/* ─── Measurement floating panel ────────────────────────────── */
.measure-panel {
  position: absolute;
  top: calc(var(--s4) + 44px); /* directly below the floating toolbar */
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-raised);
  border: 1px solid var(--bd);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-float);
  backdrop-filter: blur(8px);
  z-index: 20;
  padding: var(--s2);
  display: flex; flex-direction: column; gap: var(--s2);
  min-width: 260px;
  animation: measurePanelIn 0.15s ease;
}
.measure-panel.hidden { display: none; }

@keyframes measurePanelIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.measure-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--s1);
  font-size: var(--tx-sm); font-weight: 600;
  color: var(--tx-secondary);
}
.measure-close-btn {
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  border: none; border-radius: var(--r-sm);
  background: transparent; color: var(--tx-muted);
  cursor: pointer; transition: all var(--t-base); padding: 0;
}
.measure-close-btn:hover { background: var(--bg-hover); color: var(--tx-primary); }

.measure-panel-modes {
  display: flex; gap: 2px;
}
.measure-mode-btn {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 8px var(--s1);
  border: 1px solid transparent; border-radius: var(--r-sm);
  background: transparent; color: var(--tx-muted);
  cursor: pointer; font-size: 10px; font-family: var(--font);
  transition: all var(--t-base); line-height: 1;
}
.measure-mode-btn svg { flex-shrink: 0; }
.measure-mode-btn:hover {
  background: var(--bg-hover); color: var(--tx-primary);
  border-color: var(--bd);
}
.measure-mode-btn.active {
  background: var(--accent-subtle); color: var(--accent);
  border-color: var(--accent);
}

.measure-hint {
  font-size: 11px; color: var(--tx-muted);
  text-align: center; padding: 2px var(--s1);
  min-height: 16px;
  font-style: italic;
}

/* Crosshair marker that follows cursor while measurement tool is active */
.measure-cursor-marker {
  position: fixed;
  width: 24px; height: 24px;
  pointer-events: none;
  z-index: 10000;
  display: none;
  transform: translate(-50%, -50%);
}
.measure-cursor-marker.visible { display: block; }
.measure-cursor-marker::before,
.measure-cursor-marker::after {
  content: '';
  position: absolute;
  background: var(--accent);
  border-radius: 1px;
}
.measure-cursor-marker::before {
  width: 2px; height: 100%;
  left: 50%; top: 0;
  transform: translateX(-50%);
}
.measure-cursor-marker::after {
  width: 100%; height: 2px;
  left: 0; top: 50%;
  transform: translateY(-50%);
}

/* Spinning ring overlay next to cursor during GPU pick */
.measure-cursor-spinner {
  position: fixed;
  width: 18px; height: 18px;
  border: 2px solid var(--bd);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: pp-spin 0.6s linear infinite;
  pointer-events: none;
  z-index: 10000;
  display: none;
}
.measure-cursor-spinner.visible { display: block; }

/* Spinner inside hint element during picking */
.measure-hint.measure-picking {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.measure-hint.measure-picking::before {
  content: '';
  width: 10px; height: 10px;
  border: 1.5px solid var(--bd);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: pp-spin 0.8s linear infinite;
  flex-shrink: 0;
}

.measure-panel-actions {
  display: flex; gap: 4px;
}
.measure-action-btn {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: 4px;
  padding: 5px var(--s2);
  border: 1px solid var(--bd); border-radius: var(--r-sm);
  background: transparent; color: var(--tx-secondary);
  cursor: pointer; font-size: var(--tx-xs); font-family: var(--font);
  transition: all var(--t-base);
}
.measure-action-btn:hover { background: var(--bg-hover); color: var(--tx-primary); }
.measure-action-btn.measure-action-danger:hover {
  background: var(--error-subtle); color: var(--error); border-color: rgba(239,68,68,0.3);
}

.measure-panel-shortcut {
  font-size: 10px; color: var(--tx-muted);
  text-align: center; opacity: 0.7;
  padding: 0 var(--s1);
}

/* ─── Floor Plan Zoom Bar (horizontal, below toolbar) ─────── */
.fp-zoom-bar {
  position: absolute;
  top: calc(var(--s4) + 44px);   /* directly below #floating-toolbar */
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px 6px;
  background: var(--bg-raised);
  border: 1px solid var(--bd);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-float);
  z-index: 19;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base);
  backdrop-filter: blur(8px);
}
.fp-zoom-bar.visible {
  opacity: 1;
  pointer-events: auto;
}

.fp-zoom-bar-btn {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border: none; border-radius: var(--r-sm);
  background: transparent; color: var(--tx-secondary);
  font-size: 15px; font-weight: 600; line-height: 1;
  cursor: pointer; transition: all var(--t-base);
  padding: 0; flex-shrink: 0;
}
.fp-zoom-bar-btn:hover {
  background: var(--bg-hover); color: var(--tx-primary);
}

.fp-zoom-bar-range {
  width: 180px; height: 26px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--accent);
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

/* Track */
.fp-zoom-bar-range::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--bd);
  border-radius: 2px;
}
.fp-zoom-bar-range::-moz-range-track {
  height: 4px;
  background: var(--bd);
  border-radius: 2px;
}

/* Thumb */
.fp-zoom-bar-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-raised);
  box-shadow: 0 0 4px rgba(0,0,0,0.3);
  cursor: grab;
  margin-top: -5px;
}
.fp-zoom-bar-range::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-raised);
  box-shadow: 0 0 4px rgba(0,0,0,0.3);
  cursor: grab;
}

/* ─── 10. Right Panel (Properties) ─────────────────────────── */
/* Fixed overlay — sits on top of the viewer, never affects the grid.
   Resizing the panel only changes its width; the viewer always fills 1fr. */
#property-bar {
  position: fixed;
  right: 0;
  top: var(--topbar-h);
  bottom: 0;
  width: var(--rpanel-w);
  display: flex; flex-direction: column;
  background: var(--bg-panel);
  border-left: 1px solid var(--bd-subtle);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.45);
  z-index: 30;
  overflow: hidden;
}

/* Resize handle (left edge of right panel) */
#prop-resizer {
  position: absolute; left: -1px; top: 0; bottom: 0;
  width: 4px; cursor: col-resize; z-index: 10;
  background: transparent;
  transition: background var(--t-base);
}
#prop-resizer:hover { background: var(--accent-subtle); }

#ptable-div {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  position: relative;
}
.tab-content-prop { padding: 0; }
.tab-content-prop.hidden { display: none; }

/* Properties table */
.prop-table {
  width: 100%; border-collapse: collapse;
  font-size: var(--tx-sm);
}
.prop-table thead { display: none; } /* Hide header — minimal look */
.prop-table td {
  padding: 6px var(--s4); color: var(--tx-secondary);
  border-bottom: 1px solid var(--bd-dim);
  vertical-align: top; line-height: 1.4;
}
.prop-table td:first-child {
  color: var(--tx-muted); font-size: var(--tx-xs); width: 45%;
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em;
  padding-top: 8px;
}
.prop-table td:last-child {
  font-family: var(--font-mono); font-size: var(--tx-xs);
  color: var(--tx-primary); word-break: break-all;
}
.prop-table tbody tr:hover td { background: var(--bg-hover); }

/* Panel actions footer */
#additionalActions {
  display: flex; flex-direction: column; gap: var(--s2);
  padding: var(--s3) var(--s4);
  border-top: 1px solid var(--bd-subtle);
  flex-shrink: 0;
}

/* ─── 11. IFC Properties (PropertiesTable.js renders these) ─── */

/* Scoped to .accordion-section to avoid conflict with Bootstrap h2.accordion-header */
.accordion-section {
  border-bottom: 1px solid var(--bd-dim);
}
.accordion-section .accordion-header {
  padding: 7px var(--s4);
  font-size: var(--tx-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--tx-muted);
  background: var(--bg-hover);
  cursor: pointer; user-select: none;
  transition: background var(--t-fast), color var(--t-fast);
}
.accordion-section .accordion-header:hover {
  background: var(--bg-active);
  color: var(--tx-secondary);
}
.accordion-content { display: none; }
.accordion-content.expanded { display: block; }
.accordion-section .accordion-header.expanded { color: var(--tx-primary); }

/* property-table inside accordion-content */
.property-table {
  width: 100%; border-collapse: collapse;
  font-size: var(--tx-xs);
}
.property-table tr:last-child td { border-bottom: none; }
.property-table td {
  padding: 5px var(--s4);
  border-bottom: 1px solid var(--bd-dim);
  vertical-align: top; line-height: 1.5;
}
.property-table .property-key {
  color: var(--tx-muted); width: 42%;
  font-weight: 500;
}
.property-table .property-value {
  color: var(--tx-primary);
  font-family: var(--font-mono);
  word-break: break-all;
}
.property-table tr:hover td { background: var(--bg-hover); }

/* Element header (top of properties panel) */
.prop-element-header {
  padding: var(--s4) var(--s5);
  background: var(--accent-dim);
  border-radius: var(--r-sm);
}
.prop-element-badge {
  display: inline-block;
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 9px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 3px 8px; border-radius: var(--r-sm);
  border: 1px solid var(--accent-subtle);
}
.prop-element-name {
  font-size: 17px; font-weight: 700;
  color: var(--tx-primary);
  margin-top: 8px; line-height: 1.25;
  letter-spacing: -0.01em;
}

/* Native attributes section — subtle background highlight */
.accordion-native {
  background: var(--accent-dim);
  border-radius: var(--r-sm);
  margin: 0 0 var(--s2);
  padding: var(--s1) 0;
}

/* Accordion chevron + count */
.accordion-section .accordion-header {
  display: flex; align-items: center; gap: var(--s2);
}
.prop-chevron {
  width: 12px; height: 12px; flex-shrink: 0;
  transition: transform var(--t-base);
  color: var(--tx-muted);
}
.accordion-section .accordion-header.expanded .prop-chevron {
  transform: rotate(90deg);
}
.prop-count {
  margin-left: auto;
  font-size: var(--tx-2xs); font-family: var(--font-mono);
  color: var(--tx-muted);
}

/* Hide property-table thead (Property/Value headers) */
.property-table thead { display: none; }

/* Empty values */
.property-value.empty {
  color: var(--tx-muted);
  font-style: normal;
}

/* Boolean badges */
.bool-badge {
  display: inline-block;
  font-size: var(--tx-2xs); font-weight: 600;
  padding: 1px 6px; border-radius: var(--r-full);
  font-family: var(--font-mono);
}
.bool-badge.bool-true {
  background: var(--success-subtle); color: var(--success);
}
.bool-badge.bool-false {
  background: var(--error-subtle); color: var(--error);
}

/* Empty state */
.prop-empty-state {
  padding: var(--s6) var(--s4);
  text-align: center;
  color: var(--tx-muted);
  font-size: var(--tx-sm);
}

/* Legacy IFC table helpers */
#material-table {
  width: 100%; border-collapse: collapse;
  color: var(--tx-primary); font-size: var(--tx-sm);
}
.td-pset {
  background: var(--bg-hover) !important;
  font-weight: 600; font-size: var(--tx-xs);
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--tx-muted) !important; padding: 6px var(--s4) !important;
}

/* ─── Dynamic loading overlay (loadingManager.js creates this on body) ─── */
.model-loading-overlay {
  position: fixed; inset: 0;
  background: var(--overlay-heavy);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}
.model-loading-overlay.hidden { display: none; }
.model-loading-overlay .loading-content {
  text-align: center;
  padding: var(--s8) 48px;
  background: var(--bg-raised);
  border: 1px solid var(--bd);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-xl);
  min-width: 300px;
  display: flex; flex-direction: column; gap: var(--s3);
}
.model-loading-overlay .loading-title {
  font-size: var(--tx-md); font-weight: 600;
  color: var(--tx-primary);
}
.model-loading-overlay .loading-percentage {
  font-size: var(--tx-xl); font-weight: 700;
  color: var(--accent); font-family: var(--font-mono);
}
.model-loading-overlay .loading-progress-container { margin: var(--s1) 0; }
.model-loading-overlay .loading-progress-bar {
  height: 4px; background: var(--bg-active);
  border-radius: var(--r-full); overflow: hidden;
}
.model-loading-overlay .loading-progress-fill {
  height: 100%; background: var(--accent);
  border-radius: var(--r-full);
  transition: width 0.3s ease; width: 0;
}
.model-loading-overlay .loading-status {
  font-size: var(--tx-sm); color: var(--tx-secondary);
}

/* ─── Post-Processing Banner ─────────────────────────────── */
.pp-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 800;
  display: flex; align-items: center; gap: var(--s3);
  padding: var(--s2) var(--s4);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--bd-subtle);
  font-size: var(--tx-sm);
  color: var(--tx-secondary);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.pp-banner.pp-hidden {
  opacity: 0; transform: translateY(100%);
  pointer-events: none;
}
.pp-banner__spinner {
  display: block;
  width: 14px; height: 14px;
  border: 2px solid var(--bd);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: pp-spin 0.8s linear infinite;
  flex-shrink: 0;
}
@keyframes pp-spin { to { transform: rotate(360deg); } }
.pp-banner__bar {
  display: block;
  flex: 1; max-width: 200px;
  height: 3px; background: var(--bg-active);
  border-radius: var(--r-full); overflow: hidden;
}
.pp-banner__fill {
  display: block;
  height: 100%; width: 0%;
  background: var(--accent);
  border-radius: var(--r-full);
  transition: width 0.5s ease;
}
.pp-banner__text { flex: 1; }

/* ─── 12. Drawers ────────────────────────────────────────── */
.drawer {
  position: fixed; top: var(--topbar-h); right: 0; bottom: 0;
  width: var(--drawer-w);
  background: var(--bg-panel);
  border-left: 1px solid var(--bd);
  box-shadow: var(--sh-drawer);
  display: flex; flex-direction: column;
  z-index: 200;
  transform: translateX(0);
  transition: transform var(--t-drawer), opacity var(--t-drawer);
}
.drawer.hidden {
  transform: translateX(calc(100% + 1px));
  pointer-events: none;
}
.drawer-wide { width: var(--drawer-lg-w); }

.drawer-backdrop {
  position: fixed; inset: 0; top: var(--topbar-h);
  background: var(--backdrop-bg);
  backdrop-filter: blur(2px);
  z-index: 190;
  opacity: 1; transition: opacity var(--t-drawer);
}
.drawer-backdrop.hidden { opacity: 0; pointer-events: none; }

.drawer-header {
  display: flex; align-items: center;
  padding: 0 var(--s4);
  height: 48px; flex-shrink: 0;
  border-bottom: 1px solid var(--bd-subtle);
  gap: var(--s3);
}
.drawer-title {
  font-size: var(--tx-md); font-weight: 600;
  color: var(--tx-primary); flex: 1; margin: 0;
}

.drawer-body {
  flex: 1; overflow-y: auto; padding: var(--s5);
  display: flex; flex-direction: column; gap: var(--s4);
}
.drawer-split {
  flex-direction: row; gap: var(--s5);
  padding: 0; overflow: hidden;
}
.drawer-col {
  display: flex; flex-direction: column;
  gap: var(--s3); padding: var(--s4);
  overflow-y: auto;
}
.drawer-col:first-child {
  width: 200px; flex-shrink: 0;
  border-right: 1px solid var(--bd-subtle);
}
.drawer-col-main { flex: 1; }
.drawer-col-label {
  font-size: var(--tx-xs); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--tx-muted);
}

.drawer-footer {
  display: flex; justify-content: flex-end; gap: var(--s2);
  padding-top: var(--s4); margin-top: auto;
  border-top: 1px solid var(--bd-subtle); flex-shrink: 0;
}

/* Filter list */
#filter-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 2px;
}
#filter-list li {
  padding: 6px var(--s3); border-radius: var(--r-md);
  font-size: var(--tx-sm); color: var(--tx-secondary); cursor: pointer;
  transition: background var(--t-base), color var(--t-base);
}
#filter-list li {
  display: flex; align-items: center; gap: var(--s2);
}
#filter-list li:hover { background: var(--bg-hover); color: var(--tx-primary); }
#filter-list li.active { background: var(--accent-subtle); color: var(--accent); }
.filter-list-name {
  flex: 1; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.filter-list-summary {
  flex-shrink: 0; font-size: var(--tx-xs); color: var(--tx-muted);
}
.filter-list-delete {
  flex-shrink: 0; background: none; border: none; cursor: pointer;
  color: var(--tx-muted); padding: 2px; border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  transition: color var(--t-base), background var(--t-base);
}
.filter-list-delete:hover { color: var(--danger); background: var(--danger-subtle, rgba(239,68,68,0.1)); }

/* Table in mapping drawer */
.table-wrap {
  overflow: auto; max-height: 35vh;
  border: 1px solid var(--bd); border-radius: var(--r-md);
}
.data-table {
  width: 100%; border-collapse: collapse; font-size: var(--tx-sm);
}
.data-table thead th {
  background: var(--bg-hover); color: var(--tx-muted);
  font-size: var(--tx-xs); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; padding: 6px var(--s3);
  border-bottom: 1px solid var(--bd); text-align: left;
  position: sticky; top: 0;
}
.data-table tbody td {
  padding: 6px var(--s3); color: var(--tx-secondary);
  border-bottom: 1px solid var(--bd-dim); font-size: var(--tx-sm);
}
.data-table tbody tr:hover td { background: var(--bg-hover); color: var(--tx-primary); }
.data-table.hidden { display: none; }

/* Suggestion list */
.suggestion-list {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--bg-raised); border: 1px solid var(--bd);
  border-radius: 0 0 var(--r-md) var(--r-md);
  box-shadow: var(--sh-md); z-index: 50;
  list-style: none; margin: 0; padding: var(--s1) 0;
  max-height: 200px; overflow-y: auto;
}
.suggestion-list li {
  padding: 6px var(--s4); font-size: var(--tx-sm);
  cursor: pointer; color: var(--tx-secondary);
  transition: background var(--t-base), color var(--t-base);
}
.suggestion-list li:hover { background: var(--bg-hover); color: var(--tx-primary); }
.suggestion-list.hidden { display: none; }

/* Export check list */
.check-list { display: flex; flex-direction: column; gap: var(--s2); }
.check-item {
  display: flex; align-items: center; gap: var(--s3);
  padding: var(--s2) var(--s3); border-radius: var(--r-md);
  cursor: pointer; font-size: var(--tx-sm); color: var(--tx-secondary);
  transition: background var(--t-base), color var(--t-base);
}
.check-item:hover { background: var(--bg-hover); color: var(--tx-primary); }

/* ─── 13. Modal (IFC Load) ───────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 500;
  transition: opacity var(--t-slow);
}
.modal-overlay.hidden { display: none; }
.modal-card {
  background: var(--bg-panel);
  border: 1px solid var(--bd);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-xl);
  padding: var(--s6);
  max-width: 440px; width: 90%;
  position: relative;
  display: flex; flex-direction: column; gap: var(--s4);
}
.modal-close {
  position: absolute; top: var(--s4); right: var(--s4);
}
.modal-title {
  font-size: var(--tx-lg); font-weight: 600;
  color: var(--tx-primary); margin: 0;
}
.alert-info {
  padding: var(--s3) var(--s4);
  background: var(--info-subtle);
  border: 1px solid rgba(59, 130, 246, 0.20);
  border-radius: var(--r-md);
  font-size: var(--tx-sm); color: var(--tx-secondary);
}

/* ─── 14. Buttons ────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--s2); padding: 0 var(--s4); height: 32px;
  background: var(--accent); color: var(--tx-inverse);
  border: none; border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-sm); font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: background var(--t-base), box-shadow var(--t-base), opacity var(--t-base);
  text-decoration: none;
}
.btn-primary svg { width: 13px; height: 13px; }
.btn-primary:hover { background: var(--accent-h); box-shadow: var(--accent-glow); }
.btn-primary:active { background: var(--accent-a); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; box-shadow: none; }

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--s2); padding: 0 var(--s4); height: 32px;
  background: var(--bg-raised); color: var(--tx-secondary);
  border: 1px solid var(--bd); border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-sm); font-weight: 500;
  cursor: pointer; white-space: nowrap;
  transition: background var(--t-base), color var(--t-base), border-color var(--t-base);
  text-decoration: none;
}
.btn-secondary svg { width: 13px; height: 13px; }
.btn-secondary:hover { background: var(--bg-hover); color: var(--tx-primary); border-color: var(--bd-strong); }
.btn-secondary:active { background: var(--bg-active); }
.btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--s2); padding: 0 var(--s3); height: 28px;
  background: transparent; color: var(--tx-muted);
  border: none; border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-xs); font-weight: 500;
  cursor: pointer; white-space: nowrap;
  transition: background var(--t-base), color var(--t-base);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--tx-secondary); }

.btn-action {
  display: flex; align-items: center; gap: var(--s2);
  width: 100%; padding: 6px var(--s3);
  background: transparent; color: var(--tx-secondary);
  border: none; border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-sm); font-weight: 500;
  cursor: pointer; text-align: left;
  transition: background var(--t-base), color var(--t-base);
}
.btn-action svg { width: 13px; height: 13px; flex-shrink: 0; color: var(--tx-muted); }
.btn-action:hover { background: var(--bg-hover); color: var(--tx-primary); }
.btn-action:hover svg { color: var(--tx-secondary); }
.btn-action:disabled { opacity: 0.4; cursor: not-allowed; }

/* Module-colored primary button */
.btn-mod {
  background: var(--mod); color: var(--tx-inverse);
}
.btn-mod:hover { background: var(--mod-h); box-shadow: 0 0 14px rgba(245,158,11,0.25); }

/* ─── 15. Form Controls ──────────────────────────────────── */
.field-group {
  display: flex; flex-direction: column; gap: var(--s1);
  position: relative;
}
.field-label {
  font-size: var(--tx-xs); font-weight: 600;
  color: var(--tx-muted); text-transform: uppercase; letter-spacing: 0.05em;
}
.field-input {
  height: 32px; padding: 0 var(--s3);
  background: var(--bg-raised); color: var(--tx-primary);
  border: 1px solid var(--bd); border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-sm);
  outline: none; width: 100%;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.field-input:focus {
  border-color: var(--bd-focus);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.field-input::placeholder { color: var(--tx-muted); }

.field-select {
  height: 32px; padding: 0 var(--s3);
  background: var(--bg-raised); color: var(--tx-primary);
  border: 1px solid var(--bd); border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-sm);
  outline: none; width: 100%; cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236b7499'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
  padding-right: 28px;
  transition: border-color var(--t-base);
}
.field-select:focus { border-color: var(--bd-focus); box-shadow: 0 0 0 3px var(--accent-dim); }
.field-select option { background: var(--bg-raised); color: var(--tx-primary); }

.field-hint {
  font-size: var(--tx-xs); color: var(--tx-muted);
  line-height: 1.5;
}

.radio-group { display: flex; flex-direction: column; gap: var(--s2); }
.radio-label {
  display: flex; align-items: center; gap: var(--s2);
  font-size: var(--tx-sm); color: var(--tx-secondary); cursor: pointer;
}
.radio-label input[type="radio"] {
  accent-color: var(--accent);
  width: 14px; height: 14px;
}

/* Toggle switch */
.toggle-input {
  appearance: none; width: 32px; height: 18px;
  background: var(--bg-active); border-radius: var(--r-full);
  cursor: pointer; position: relative;
  transition: background var(--t-base);
  flex-shrink: 0;
}
.toggle-input::after {
  content: ''; position: absolute;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--tx-secondary);
  top: 3px; left: 3px;
  transition: transform var(--t-base), background var(--t-base);
}
.toggle-input:checked { background: var(--accent); }
.toggle-input:checked::after { transform: translateX(14px); background: var(--tx-on-accent); }

/* Btn-select (styled as secondary button, used for dropdowns) */
.btn-select {
  display: inline-flex; align-items: center; gap: var(--s2);
  padding: 0 var(--s3); height: 32px;
  background: var(--bg-raised); color: var(--tx-secondary);
  border: 1px solid var(--bd); border-radius: var(--r-md);
  font-family: var(--font); font-size: var(--tx-sm); font-weight: 500;
  cursor: pointer; width: 100%; text-align: left;
  transition: background var(--t-base), border-color var(--t-base), color var(--t-base);
}
.btn-select:hover { background: var(--bg-hover); color: var(--tx-primary); }

/* Property rule (filter form) */
.property-rule, .enhanced-property-rule {
  display: flex; flex-direction: column; gap: var(--s2);
  padding: var(--s3); border-radius: var(--r-md);
  background: var(--bg-hover); border: 1px solid var(--bd);
}

/* Debug buttons — de-emphasized */
.debug-actions {
  display: flex; gap: var(--s2);
  padding-top: var(--s2); border-top: 1px solid var(--bd-dim);
}

/* ─── 16. Toast Notifications ────────────────────────────── */
#toast-container, .toast-container {
  position: fixed; top: var(--s5); right: var(--s5);
  z-index: 1000; display: flex; flex-direction: column; gap: var(--s2);
  pointer-events: none; max-width: 340px;
}
.toast-notification {
  padding: var(--s3) var(--s4);
  border-radius: var(--r-lg);
  font-size: var(--tx-sm); font-weight: 500;
  color: var(--tx-primary); pointer-events: auto;
  box-shadow: var(--sh-lg);
  border-left: 3px solid transparent;
  opacity: 0; transform: translateX(16px);
  transition: all 0.25s ease;
  cursor: pointer;
}
.toast-notification.visible { opacity: 1; transform: translateX(0); }
.toast-success { background: var(--toast-bg-success); border-color: var(--success); color: var(--success); }
.toast-error   { background: var(--toast-bg-error);   border-color: var(--error);   color: var(--error);   }
.toast-warning { background: var(--toast-bg-warning); border-color: var(--warning); color: var(--warning); }
.toast-info    { background: var(--toast-bg-info);    border-color: var(--info);    color: var(--info);    }

/* Loading overlay */
.loading-overlay {
  position: absolute; inset: 0;
  background: var(--overlay-heavy); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 30;
}
.loading-overlay.hidden { display: none; }
.loading-content {
  text-align: center; padding: var(--s8) var(--s10);
  background: var(--bg-raised); border: 1px solid var(--bd);
  border-radius: var(--r-xl); box-shadow: var(--sh-lg);
  display: flex; flex-direction: column; gap: var(--s4); min-width: 260px;
}
.loading-ring {
  width: 36px; height: 36px; margin: 0 auto;
  border: 2.5px solid var(--bd); border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.loading-message { font-size: var(--tx-sm); color: var(--tx-secondary); margin: 0; }
.loading-progress { display: flex; align-items: center; gap: var(--s3); }
.loading-bar {
  flex: 1; height: 4px; background: var(--bg-active); border-radius: var(--r-full); overflow: hidden;
}
.loading-fill {
  height: 100%; background: var(--accent); border-radius: var(--r-full);
  transition: width 0.3s ease; width: 0;
}
#loading-percent { font-size: var(--tx-xs); color: var(--tx-muted); min-width: 32px; text-align: right; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── 17. Bootstrap Overrides ────────────────────────────── */
/* Accordion */
.accordion { --bs-accordion-bg: var(--bg-raised); }
.accordion-item {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--bd-dim) !important;
}
.accordion-button {
  background: var(--bg-raised) !important;
  color: var(--tx-primary) !important;
  font-family: var(--font) !important;
  font-size: var(--tx-sm) !important;
  padding: var(--s3) var(--s4) !important;
  box-shadow: none !important;
  border-radius: 0 !important;
}
.accordion-button:not(.collapsed) {
  background: var(--bg-hover) !important;
  color: var(--accent) !important;
}
.accordion-button::after {
  filter: invert(50%) sepia(30%) saturate(200%) hue-rotate(180deg);
}
.accordion-body {
  background: var(--bg-raised);
  color: var(--tx-secondary);
  font-size: var(--tx-sm);
  padding: var(--s3) var(--s4) !important;
}

/* Dropdown */
.dropdown-menu {
  background: var(--bg-raised) !important;
  border: 1px solid var(--bd) !important;
  border-radius: var(--r-lg) !important;
  box-shadow: var(--sh-lg) !important;
  padding: var(--s1) !important;
  max-height: 45vh;
  overflow-y: auto;
}
.dropdown-item {
  color: var(--tx-secondary) !important;
  font-size: var(--tx-sm) !important;
  border-radius: var(--r-sm) !important;
  padding: 5px var(--s3) !important;
  font-family: var(--font) !important;
}
.dropdown-item:hover, .dropdown-item:focus {
  background: var(--bg-hover) !important;
  color: var(--tx-primary) !important;
}
.dropdown-item-text { color: var(--tx-muted) !important; font-size: var(--tx-xs) !important; }
.dropdown-hint {
  padding: var(--s1) var(--s2) var(--s1);
  font-size: var(--tx-xs);
  color: var(--tx-muted);
  border-bottom: 1px solid var(--bd);
  margin-bottom: var(--s1);
  pointer-events: none;
}

/* Form controls (used in dynamically generated filter rules) */
.form-select, .form-control {
  background-color: var(--bg-raised) !important;
  color: var(--tx-primary) !important;
  border-color: var(--bd) !important;
  font-family: var(--font) !important;
  font-size: var(--tx-sm) !important;
}
.form-select:focus, .form-control:focus {
  border-color: var(--bd-focus) !important;
  box-shadow: 0 0 0 3px var(--accent-dim) !important;
}

/* Bootstrap btn overrides */
.btn { font-family: var(--font) !important; }
.btn-success  { background-color: var(--accent) !important; border-color: var(--accent) !important; color: var(--tx-inverse) !important; }
.btn-primary  { background-color: var(--accent) !important; border-color: var(--accent) !important; color: var(--tx-inverse) !important; }
.btn-secondary { background-color: var(--bg-raised) !important; border-color: var(--bd) !important; color: var(--tx-secondary) !important; }
.btn-info     { background-color: var(--info-subtle) !important; border-color: var(--info) !important; color: var(--info) !important; }
.btn-outline-primary { border-color: var(--accent) !important; color: var(--accent) !important; }
.btn-outline-primary:hover { background-color: var(--accent-subtle) !important; }
.btn-outline-danger  { border-color: var(--error) !important; color: var(--error) !important; }
.btn-outline-danger:hover { background-color: var(--error-subtle) !important; }
.btn-danger   { background-color: var(--error-subtle) !important; border-color: var(--error) !important; color: var(--error) !important; }
.btn-sm { font-size: var(--tx-xs) !important; padding: 3px 8px !important; }

.alert-info {
  background-color: var(--info-subtle) !important;
  border-color: rgba(59,130,246,0.25) !important;
  color: var(--tx-secondary) !important;
}

/* Form check / switch */
.form-check-input {
  background-color: var(--bg-active) !important;
  border-color: var(--bd-strong) !important;
  width: 2.2rem !important; height: 1.1rem !important;
}
.form-check-input:checked { background-color: var(--accent) !important; border-color: var(--accent) !important; }
.form-check-input:focus { box-shadow: 0 0 0 3px var(--accent-dim) !important; }
.form-check-label { color: var(--tx-secondary) !important; font-size: var(--tx-sm) !important; }

/* ─── 18. Utilities ──────────────────────────────────────── */
.hidden { display: none !important; }
.prevent-select { user-select: none; }

/* Progress indicator */
.progress-indicator {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-raised); border: 1px solid var(--bd);
  border-radius: var(--r-xl); padding: var(--s5) var(--s8);
  display: flex; flex-direction: column; align-items: center; gap: var(--s3);
  box-shadow: var(--sh-lg); z-index: 99;
}
.progress-spinner { width: 28px; height: 28px; border-width: 2px; }
.progress-message { font-size: var(--tx-sm); color: var(--tx-secondary); }

/* Error boundary */
.error-boundary {
  padding: var(--s4); margin: var(--s3);
  background: var(--error-subtle); border: 1px solid rgba(239,68,68,0.25);
  border-radius: var(--r-md); color: var(--error); font-size: var(--tx-sm);
}

/* Success toast */
.toast-check {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: var(--success); color: var(--tx-on-accent);
  padding: var(--s4) var(--s6); border-radius: var(--r-xl);
  font-size: var(--tx-xl); font-weight: 700;
  opacity: 0; pointer-events: none; z-index: 9999;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.toast-check.visible { opacity: 1; transform: translate(-50%, -50%) scale(1); }

/* Context menu */
.context-menu {
  position: fixed; z-index: 800;
  background: var(--bg-raised); border: 1px solid var(--bd);
  border-radius: var(--r-lg); box-shadow: var(--sh-lg);
  padding: var(--s1); min-width: 160px;
}
.context-menu-item {
  display: flex; align-items: center; gap: var(--s2);
  padding: 6px var(--s3); border-radius: var(--r-sm);
  font-size: var(--tx-sm); color: var(--tx-secondary);
  cursor: pointer; white-space: nowrap;
  transition: background var(--t-base), color var(--t-base);
}
.context-menu-item:hover { background: var(--bg-hover); color: var(--tx-primary); }

/* ═══════════════════════════════════════════════════════════
   IFC SPATIAL TREE  (IfcSpatialTree.js)
   ═══════════════════════════════════════════════════════════ */

.ifc-spatial-tree {
  height: 100%; display: flex; flex-direction: column; overflow: hidden;
}
.tree-header {
  padding: var(--s3) var(--s3);
  border-bottom: 1px solid var(--bd-subtle);
  flex-shrink: 0;
  display: flex; flex-direction: column; gap: var(--s2);
}
.tree-controls { display: flex; gap: var(--s2); }

.tree-search {
  flex: 1; min-width: 0;
  padding: 5px var(--s3);
  background: var(--bg-raised);
  border: 1px solid var(--bd);
  border-radius: var(--r-sm);
  color: var(--tx-primary);
  font-size: var(--tx-sm); font-family: var(--font);
  outline: none;
  transition: border-color var(--t-fast);
}
.tree-search:focus       { border-color: var(--bd-focus); }
.tree-search::placeholder { color: var(--tx-muted); }

.tree-expand-all,
.tree-collapse-all {
  padding: 4px var(--s2);
  background: transparent;
  border: 1px solid var(--bd);
  border-radius: var(--r-sm);
  color: var(--tx-muted);
  font-size: var(--tx-xs); font-family: var(--font);
  cursor: pointer; white-space: nowrap; flex-shrink: 0;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.tree-expand-all:hover,
.tree-collapse-all:hover {
  background: var(--bg-hover); color: var(--tx-primary); border-color: var(--bd-strong);
}

.tree-stats { font-size: var(--tx-xs); color: var(--tx-muted); }

.tree-content {
  flex: 1; overflow-y: auto;
  padding: var(--s1) var(--s1) var(--s4);
}

.tree-empty-msg {
  padding: var(--s5) var(--s4);
  text-align: center; color: var(--tx-muted); font-size: var(--tx-sm);
}

/* ── Tree nodes ───────────────────────────────────────────── */
.tree-node {
  display: flex; align-items: center;
  padding: 3px var(--s2); margin: 1px 0;
  cursor: pointer; border-radius: var(--r-sm);
  user-select: none; gap: 4px; min-width: 0;
  font-size: var(--tx-sm); color: var(--tx-secondary);
  transition: background var(--t-fast), color var(--t-fast);
}
.tree-node:hover   { background: var(--bg-hover); color: var(--tx-primary); }
.tree-node.selected { background: var(--bg-selected); color: var(--accent); }
.tree-node.selected .tree-count { color: var(--accent); opacity: 0.6; }

/* Type-specific colours */
.tree-node-building  { font-weight: 500; }
.tree-node-project,
.tree-node-root,
.tree-node-model     {
  font-size: var(--tx-2xs); color: var(--tx-muted);
  font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
}

/* Chevron toggle */
.tree-toggle {
  width: 14px; height: 14px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--tx-muted);
  transition: transform var(--t-fast), color var(--t-fast);
}
.tree-toggle svg { display: block; }
.tree-toggle.expanded      { transform: rotate(90deg); color: var(--tx-secondary); }
.tree-toggle.no-children   { opacity: 0; pointer-events: none; }

/* Type icon */
.tree-icon {
  width: 13px; height: 13px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--tx-muted);
}
.tree-node-building .tree-icon { color: var(--accent);      opacity: 0.8; }
.tree-node-storey   .tree-icon { color: var(--mod);         opacity: 0.8; }
.tree-node-space    .tree-icon { color: var(--tx-secondary); }
.tree-node-element  .tree-icon { color: var(--tx-muted); }

/* Label + count */
.tree-label {
  flex: 1; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; min-width: 0;
}
.tree-count {
  font-size: var(--tx-2xs); color: var(--tx-muted); flex-shrink: 0;
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
}

/* Children indentation with subtle guide line */
.tree-children {
  padding-left: 14px;
  border-left: 1px solid var(--bd-dim);
  margin-left: 6px;
}

/* ── Tree context menu ────────────────────────────────────── */
.tree-context-menu {
  position: fixed;
  background: var(--bg-raised);
  border: 1px solid var(--bd);
  border-radius: var(--r-md);
  box-shadow: var(--sh-float);
  z-index: 9999;
  min-width: 170px;
  padding: var(--s1) 0;
  overflow: hidden;
}
.tree-context-menu button {
  display: flex; align-items: center; gap: var(--s2);
  width: 100%; padding: 7px var(--s4);
  background: none; border: none;
  color: var(--tx-secondary);
  font-size: var(--tx-sm); font-family: var(--font);
  cursor: pointer; text-align: left;
  transition: background var(--t-fast), color var(--t-fast);
}
.tree-context-menu button:hover { background: var(--bg-hover); color: var(--tx-primary); }
.tree-ctx-icon {
  width: 14px; height: 14px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--tx-muted);
}

/* ═══════════════════════════════════════════════════════════
   PLANON ASSET ACCORDION  (renderData.js)
   ═══════════════════════════════════════════════════════════ */

/* Override: give the accordion-item a transparent background to keep panel look */
#tab-content-file-2 .accordion-item { background: transparent; }
#tab-content-file-2 .accordion-body { padding: var(--s2) var(--s3) !important; }

/* Main clickable label (replaces .accordion-main-button inline styles) */
.asset-label {
  flex: 1; min-width: 0;
  padding: var(--s1) var(--s2);
  font-size: var(--tx-sm); color: var(--tx-secondary);
  cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  transition: color var(--t-fast);
}
.asset-label:hover { color: var(--tx-primary); }

/* Mapped state: green left accent */
.asset-label.asset-mapped {
  color: var(--success);
  border-left: 2px solid var(--success);
  padding-left: var(--s2);
  transition: background var(--t-fast), color var(--t-fast);
}
.asset-label.asset-mapped:hover { background: var(--success-subtle); }

.asset-link-badge {
  width: 13px; height: 13px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--success); opacity: 0.8; margin-left: 4px;
}

/* Button row inside accordion body */
.asset-actions {
  display: flex; gap: var(--s2); flex-wrap: wrap;
  padding-top: var(--s3); margin-top: var(--s2);
  border-top: 1px solid var(--bd-dim);
}

/* ── Inline edit in Planon properties panel ──────────────── */
.field-edit-container {
  display: flex; align-items: center; gap: var(--s2); min-height: 22px;
}
.field-edit-value {
  flex: 1; cursor: text;
  padding: 2px 4px;
  border: 1px solid transparent;
  border-radius: var(--r-xs);
  color: var(--tx-primary);
  font-size: inherit;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.field-edit-value:hover { border-color: var(--bd); background: var(--bg-hover); }
.field-edit-btn {
  width: 22px; height: 22px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: none; border-radius: var(--r-xs);
  color: var(--tx-muted); cursor: pointer; opacity: 0.6;
  transition: opacity var(--t-fast), background var(--t-fast), color var(--t-fast);
}
.field-edit-btn:hover { opacity: 1; background: var(--bg-hover); color: var(--tx-secondary); }
.field-edit-input {
  width: 100%; padding: 2px 6px;
  border: 1.5px solid var(--bd-focus);
  border-radius: var(--r-xs);
  background: var(--bg-raised);
  color: var(--tx-primary);
  font-size: inherit; font-family: inherit; outline: none;
}

/* Bootstrap .mt-* overrides for spacing in drawer */
.mt-2 { margin-top: var(--s2) !important; }
.mt-3 { margin-top: var(--s3) !important; }

/* ── Model List ──────────────────────────────────────────────── */

.model-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.model-list-item {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: var(--s2) var(--s3);
  font-size: var(--tx-xs);
  color: var(--tx-secondary);
  border-bottom: 1px solid var(--bd-dim);
  transition: background var(--speed-fast);
}

.model-list-item:hover {
  background: var(--bg-hover);
}

.model-list-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
  color: var(--tx-primary);
}

.model-list-count {
  font-size: 0.7rem;
  color: var(--tx-muted);
  white-space: nowrap;
}

.model-list-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.model-list-btn {
  background: none;
  border: none;
  color: var(--tx-muted);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: var(--r-sm);
  line-height: 1;
  transition: color var(--speed-fast), background var(--speed-fast);
}
.model-list-btn:hover {
  color: var(--tx-primary);
  background: var(--bg-hover);
}
.model-list-btn.active svg {
  color: var(--accent);
}
.model-list-btn.remove:hover {
  color: var(--danger, #f44);
}

/* Light mode specific adjustments */
[data-theme="light"] .ftb-btn,
[data-theme="light"] .rail-btn { color: var(--tx-secondary); }
[data-theme="light"] #floating-toolbar { background: var(--bg-glass); }

/* ─── Settings Overlay ──────────────────────────────────── */
.settings-card {
  width: min(360px, 90vw);
  padding: var(--s5);
  display: flex;
  flex-direction: column;
  gap: var(--s5);
}

/* ─── Welcome Overlay ──────────────────────────────────── */
.welcome-card {
  width: min(520px, 90vw);
  padding: var(--s6);
  display: flex;
  flex-direction: column;
  gap: var(--s4);
}
.welcome-header {
  display: flex;
  align-items: center;
  gap: var(--s3);
}
.welcome-logo {
  width: 40px;
  height: 48px;
  flex-shrink: 0;
}
.welcome-title {
  font-size: var(--tx-lg);
  font-weight: 700;
  color: var(--tx-primary);
  margin: 0;
  letter-spacing: -0.01em;
}
.welcome-beta {
  font-size: var(--tx-sm);
  color: var(--tx-secondary);
  line-height: 1.5;
  padding: var(--s3);
  background: var(--bg-hover);
  border-radius: var(--r-md);
  border: 1px solid var(--bd-dim);
}
.welcome-features-title {
  font-size: var(--tx-sm);
  font-weight: 600;
  color: var(--tx-primary);
  margin: 0 0 var(--s2);
}
.welcome-feature-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex; flex-direction: column;
  gap: var(--s2);
}
.welcome-feature-list li {
  font-size: var(--tx-xs);
  color: var(--tx-secondary);
  padding-left: var(--s4);
  position: relative;
  line-height: 1.45;
}
.welcome-feature-list li::before {
  content: '→';
  position: absolute; left: 0;
  color: var(--accent);
  font-weight: 600;
}
.welcome-controls-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--s2);
}
.welcome-control-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s1);
  padding: var(--s2) var(--s1);
  background: var(--bg-hover);
  border-radius: var(--r-md);
  border: 1px solid var(--bd-dim);
  overflow: hidden;
}
.welcome-mouse-icon {
  color: var(--tx-secondary);
  flex-shrink: 0;
}
.welcome-ctrl-action {
  font-size: 10px;
  color: var(--tx-muted);
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
}
.welcome-ctrl-label {
  font-size: var(--tx-xs);
  color: var(--tx-primary);
  font-weight: 600;
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
}
.welcome-ctrl-extra {
  text-align: center;
  font-size: var(--tx-xs);
  color: var(--tx-muted);
  margin-top: var(--s2);
}
.welcome-hint {
  font-size: var(--tx-xs);
  color: var(--tx-muted);
  line-height: 1.45;
  padding: var(--s2) var(--s3);
  background: var(--bg-hover);
  border-radius: var(--r-md);
  border-left: 2px solid var(--accent);
}
.welcome-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--s3);
  border-top: 1px solid var(--bd-dim);
}
.welcome-dismiss-label {
  display: flex;
  align-items: center;
  gap: var(--s2);
  font-size: var(--tx-xs);
  color: var(--tx-muted);
  cursor: pointer;
  user-select: none;
}
.welcome-dismiss-label input[type="checkbox"] {
  accent-color: var(--accent);
}
.settings-card .modal-title { margin-bottom: 0; }

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.settings-row-label {
  font-size: var(--tx-sm);
  color: var(--tx-secondary);
  font-weight: 500;
}

.settings-toggle-group {
  display: flex;
  border: 1px solid var(--bd);
  border-radius: var(--r-md);
  overflow: hidden;
}
.settings-toggle-btn {
  background: transparent;
  border: none;
  padding: 5px 14px;
  font-size: var(--tx-xs);
  font-weight: 500;
  color: var(--tx-muted);
  cursor: pointer;
  transition: background var(--speed-fast), color var(--speed-fast);
}
.settings-toggle-btn + .settings-toggle-btn {
  border-left: 1px solid var(--bd);
}
.settings-toggle-btn.active {
  background: var(--accent);
  color: #fff;
}
.settings-toggle-btn:hover:not(.active) {
  background: var(--bg-hover);
  color: var(--tx-primary);
}

.settings-slider-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
.settings-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 120px;
  height: 4px;
  border-radius: 2px;
  background: var(--bd);
  outline: none;
  cursor: pointer;
}
.settings-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
.settings-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
}
.settings-slider-value {
  font-size: var(--tx-xs);
  font-weight: 600;
  color: var(--tx-secondary);
  min-width: 16px;
  text-align: center;
}