:root {
  --bg: #eef2f7;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e5e7eb;
  --accent: #0066cc;
  --accent-2: #60a5fa;
  --shadow: 0 14px 38px rgba(15, 23, 42, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}

.app-shell {
  display: grid;
  grid-template-rows: 58px 1fr;
  height: 100vh;
}

.top-header {
  background: #050505;
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.22);
  z-index: 10;
}

.top-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  letter-spacing: 0.3px;
  color: inherit;
  text-decoration: none;
  border-radius: 8px;
}

.top-brand:hover {
  opacity: 0.88;
}

.top-brand:focus-visible {
  outline: 2px solid #60a5fa;
  outline-offset: 4px;
}

.top-brand img {
  height: 38px;
  width: auto;
  display: block;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-status {
  max-width: 560px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  color: #e0f2fe;
}

.upload-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  padding: 9px 13px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
  transition: 0.2s ease;
  border: 1px solid #0052a3;
}

.upload-button:hover { background: #0052a3; }
.upload-button input { display: none; }

.app {
  display: grid;
  grid-template-columns: var(--sidebar-width, 330px) 10px minmax(0, 1fr) 10px var(--properties-width, 360px);
  min-height: 0;
}

.app.sidebar-collapsed {
  grid-template-columns: 52px 0 minmax(0, 1fr) 10px var(--properties-width, 360px);
}

.sidebar {
  background: #0f172a;
  color: white;
  padding: 10px;
  overflow: hidden;
  display: grid;
  grid-template-rows: 38px minmax(160px, 1fr) minmax(220px, 1.3fr);
  gap: 10px;
  min-height: 0;
}

.sidebar-toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.sidebar-toggle-row span {
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.collapse-button {
  width: 34px;
  height: 34px;
  min-width: 34px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 900;
  font-size: 18px;
  line-height: 1;
}

.collapse-button:hover { background: #0052a3; }

.app.sidebar-collapsed .sidebar {
  padding: 10px 8px;
  grid-template-rows: 38px 0 0;
}

.app.sidebar-collapsed .sidebar-toggle-row span,
.app.sidebar-collapsed .tree-panel { display: none; }

.column-splitter {
  touch-action: none;
  background: #94a3b8;
  cursor: col-resize;
  min-width: 10px;
  z-index: 5;
  transition: background 0.15s ease;
}

.column-splitter:hover,
.column-splitter.dragging { background: var(--accent); }

.app.sidebar-collapsed #columnSplitter { display: none; }

.panel {
  background: var(--panel);
  color: var(--text);
  border-radius: 12px;
  padding: 12px;
  box-shadow: var(--shadow);
  min-height: 0;
}

.sidebar .panel {
  background: rgba(255, 255, 255, 0.08);
  color: white;
  box-shadow: none;
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.panel h2 {
  margin: 0 0 9px;
  font-size: 14px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.panel-header.stacked {
  display: grid;
  grid-template-columns: 1fr;
  align-items: stretch;
}

.tree-search {
  width: 100%;
  height: 28px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 8px;
  padding: 0 9px;
  background: rgba(255,255,255,0.10);
  color: white;
  outline: none;
}

.tree-search-row {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: center;
  gap: 5px;
  width: 100%;
}

.tree-search::placeholder { color: #cbd5e1; }

.tree-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.small-button,
.viewer-actions button {
  border: 0;
  border-radius: 8px;
  padding: 7px 9px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 700;
  font-size: 12px;
}

.small-button:hover,
.viewer-actions button:hover { background: #0052a3; }

.tree-panel {
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.tree-list {
  overflow: auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-right: 3px;
}

.tree-list.empty {
  color: #cbd5e1;
  font-size: 12px;
  padding: 8px 0;
}

.tree-group { border-radius: 8px; overflow: hidden; }

.tree-parent, .tree-child {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 7px;
  align-items: center;
  font-size: 12px;
  padding: 5px 6px;
  border-radius: 7px;
}

.tree-parent {
  background: rgba(255,255,255,0.10);
  font-weight: 700;
}

.tree-child {
  margin-left: 18px;
  color: #e5e7eb;
}

.tree-parent:hover, .tree-child:hover { background: rgba(255,255,255,0.16); }

.tree-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-count {
  color: #cbd5e1;
  font-size: 11px;
}

.viewer-column {
  min-width: 0;
  min-height: 0;
  padding: 12px;
}

.viewer-card {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  background: #ffffff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

#viewerCanvas {
  width: 100%;
  height: 100%;
  display: block;
  contain: strict;
}

.floating-actions {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 8px;
  z-index: 3;
}

.viewer-actions button {
  width: 34px;
  height: 34px;
  padding: 0;
  font-size: 17px;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
}

.viewer-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  color: #0f172a;
  gap: 8px;
  pointer-events: none;
  background: radial-gradient(circle at center, rgba(37, 99, 235, 0.10), rgba(255, 255, 255, 0.85));
}

.viewer-overlay.hidden { display: none; }
.viewer-overlay strong { font-size: 28px; }
.viewer-overlay span { color: #64748b; }

.properties-column {
  min-width: 0;
  min-height: 0;
  padding: 12px 12px 12px 0;
}

.properties-panel {
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.properties-content {
  overflow: auto;
  min-height: 0;
}

.property-group { margin-bottom: 14px; }
.property-group h3 { color: var(--accent); font-size: 13px; margin: 0 0 8px; }
.property-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.property-table td { border-bottom: 1px solid var(--line); padding: 6px 4px; vertical-align: top; }
.property-table td:first-child { color: var(--muted); width: 45%; }

.empty {
  color: var(--muted);
  font-size: 13px;
  padding: 12px;
}

@media (max-width: 1100px) {
  .app,
  .app.sidebar-collapsed {
    grid-template-columns: 52px 0 1fr 0 0;
  }
  .properties-column,
  .properties-splitter { display: none; }
}

.app.resizing .viewer-card,
.app.resizing #viewerCanvas {
  pointer-events: none;
}

/* Propiedades en modo oscuro */
.properties-column .panel {
  background: #0f172a;
  color: #f8fafc;
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: none;
}

.properties-column .panel h2 {
  color: #ffffff;
}

.properties-column .properties-content.empty {
  color: #cbd5e1;
}

.properties-column .property-group h3 {
  color: #60a5fa;
}

.properties-column .property-table td {
  border-bottom: 1px solid rgba(255,255,255,0.10);
  color: #e5e7eb;
}

.properties-column .property-table td:first-child {
  color: #94a3b8;
}

.properties-column .property-table tr:hover td {
  background: rgba(255,255,255,0.04);
}

/* Limpieza de márgenes/bordes generales */
.app { background: #0f172a; }
.viewer-column {
  padding: 0;
  background: #ffffff;
}
.viewer-card {
  border-radius: 0;
  box-shadow: none;
}
.properties-column {
  padding: 0;
  background: #0f172a;
}
.properties-panel {
  border-radius: 0;
  border: 0 !important;
  box-shadow: none !important;
}
.sidebar {
  padding: 8px;
}
.sidebar .panel {
  border-radius: 9px;
}
.column-splitter {
  background: #1e293b;
}
.column-splitter:hover,
.column-splitter.dragging {
  background: var(--accent);
}

/* Scrollbars acordes al estilo oscuro */
* {
  scrollbar-width: thin;
  scrollbar-color: #64748b #111827;
}
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-track {
  background: #111827;
}
*::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 10px;
  border: 2px solid #111827;
}
*::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}
*::-webkit-scrollbar-corner {
  background: #111827;
}
.viewer-card,
.viewer-column,
#viewerCanvas {
  scrollbar-color: #cbd5e1 #ffffff;
}

/* Propiedades estilo oscuro con buscador y grupos desplegables */
.properties-header {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 12px 12px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  background: #0f172a;
}
.properties-header h2 {
  margin: 0;
}
.properties-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 30px;
  gap: 6px;
  align-items: center;
}
.properties-search-add {
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid rgba(96,165,250,0.65);
  border-radius: 7px;
  background: #2563eb;
  color: #ffffff;
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}
.properties-search-add:hover {
  background: #1d4ed8;
}
.properties-search-add:focus-visible {
  outline: 2px solid #93c5fd;
  outline-offset: 1px;
}
.properties-search-add:disabled {
  opacity: 0.45;
  cursor: default;
}
.properties-search-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  min-width: 0;
}
.properties-search-filters.hidden {
  display: none;
}
.properties-search-filter-chip {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  max-width: 100%;
  border: 1px solid rgba(96,165,250,0.38);
  border-radius: 999px;
  background: rgba(37,99,235,0.18);
  color: #dbeafe;
  overflow: hidden;
}
.properties-search-filter-text {
  min-width: 0;
  padding: 3px 4px 3px 8px;
  font-size: 11px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.properties-search-filter-remove {
  flex: 0 0 auto;
  width: 23px;
  height: 23px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #bfdbfe;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}
.properties-search-filter-remove:hover {
  background: rgba(239,68,68,0.22);
  color: #fecaca;
}
.properties-search-filter-remove:focus-visible {
  outline: 1px solid #93c5fd;
  outline-offset: -2px;
}
.properties-search {
  width: 100%;
  height: 30px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 7px;
  padding: 0 10px;
  background: #1e293b;
  color: #f8fafc;
  outline: none;
}
.properties-search::placeholder {
  color: #94a3b8;
}
.properties-search:focus {
  border-color: #60a5fa;
}
.properties-content {
  padding: 0;
}
.properties-content.empty {
  padding: 12px;
}
.property-group {
  margin: 0;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.property-summary {
  min-height: 28px;
  padding: 6px 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: #ffffff;
  background: #1e293b;
  font-weight: 700;
  font-size: 12px;
  list-style: none;
  user-select: none;
}
.property-summary::-webkit-details-marker {
  display: none;
}
.property-summary::before {
  content: '▸';
  margin-right: 6px;
  color: #cbd5e1;
}
.property-group[open] > .property-summary::before {
  content: '▾';
}
.property-summary span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.property-summary small {
  color: #cbd5e1;
  font-weight: 600;
}
.property-summary:hover {
  background: #273449;
}
.properties-column .property-table {
  background: #0f172a;
}
.properties-column .property-table td {
  padding: 5px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.properties-column .property-table tr:last-child td {
  border-bottom: 0;
}
.properties-column .property-table td:first-child {
  width: 42%;
  background: rgba(255,255,255,0.03);
}

/* Columna izquierda: sin botón de desplegable y con split vertical interno */
.sidebar {
  grid-template-rows: 38px var(--project-panel-height, minmax(140px, 1fr)) 8px minmax(0, 1.3fr);
}
.sidebar-toggle-row {
  padding-left: 4px;
}
.sidebar-toggle-row span {
  font-size: 15px;
}
.row-splitter {
  height: 8px;
  cursor: row-resize;
  background: #1e293b;
  border-radius: 6px;
  touch-action: none;
}
.row-splitter:hover,
.row-splitter.dragging {
  background: var(--accent);
}

/* Propiedades: encabezados desplegables más legibles y compactos */
.property-summary {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: center;
  justify-content: flex-start;
  gap: 5px;
  min-height: 32px;
  padding: 7px 10px;
  font-size: 13.5px;
  text-transform: uppercase;
  letter-spacing: 0.2px;
}
.property-summary::before {
  margin-right: 2px;
  flex: 0 0 auto;
}
.property-summary span {
  flex: 1 1 auto;
  min-width: 0;
}
.property-summary small {
  margin-left: auto;
  flex: 0 0 auto;
  font-size: 11px;
}

/* Selección múltiple por barrido */
.selection-rectangle {
  position: absolute;
  border: 1px solid #ff0000;
  background: rgba(255, 0, 0, 0.12);
  pointer-events: none;
  z-index: 5;
}
.selection-rectangle.hidden {
  display: none;
}

/* ViewCube básico estilo Revit */
.view-cube {
  position: absolute;
  top: 54px;
  right: 12px;
  width: 86px;
  display: grid;
  gap: 4px;
  z-index: 4;
  user-select: none;
}
.view-cube button {
  height: 24px;
  border: 1px solid rgba(15,23,42,0.35);
  border-radius: 5px;
  background: rgba(255,255,255,0.92);
  color: #0f172a;
  font-size: 9px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.16);
}
.view-cube button:hover {
  background: #e0f2fe;
  border-color: #0066cc;
  color: #0066cc;
}

/* Barrido de selección en azul BIM, tenue y transparente */
.selection-rectangle {
  border: 1px solid #0066cc !important;
  background: rgba(0, 102, 204, 0.12) !important;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.28);
}
.selection-rectangle.crossing {
  background: rgba(0, 102, 204, 0.18) !important;
  border-style: dashed !important;
}
.selection-rectangle.zoom-area {
  border: 2px solid #22c55e !important;
  background: rgba(34, 197, 94, 0.14) !important;
  border-style: solid !important;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.45), 0 0 0 1px rgba(22,163,74,0.45) !important;
}

/* ViewCube tipo Revit y acciones verticales */
.view-cube {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 82px;
  height: 82px;
  display: block;
  z-index: 6;
  perspective: 220px;
}
.view-cube .cube-face {
  position: absolute;
  border: 1px solid #8b949e;
  background: linear-gradient(135deg, #f8fafc, #cbd5e1);
  color: #475569;
  font-size: 8px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(15,23,42,0.18);
  padding: 0;
}
.view-cube .cube-face:hover {
  background: linear-gradient(135deg, #dbeafe, #93c5fd);
  color: #003f7f;
  border-color: #0066cc;
}
.view-cube .cube-front {
  left: 19px;
  top: 31px;
  width: 46px;
  height: 34px;
  transform: skewY(2deg);
}
.view-cube .cube-top {
  left: 18px;
  top: 9px;
  width: 47px;
  height: 25px;
  transform: skewX(-28deg);
  font-size: 7px;
}
.view-cube .cube-right {
  left: 63px;
  top: 23px;
  width: 20px;
  height: 41px;
  transform: skewY(-38deg);
  writing-mode: vertical-rl;
  font-size: 7px;
}
.view-cube .cube-left {
  left: 1px;
  top: 26px;
  width: 20px;
  height: 39px;
  transform: skewY(38deg);
  writing-mode: vertical-rl;
  font-size: 7px;
}
.view-cube .cube-back,
.view-cube .cube-bottom {
  opacity: 0;
  pointer-events: auto;
}
.view-cube .cube-back {
  left: 20px;
  top: 31px;
  width: 44px;
  height: 32px;
}
.view-cube .cube-bottom {
  left: 19px;
  top: 57px;
  width: 46px;
  height: 20px;
}
.floating-actions {
  top: 102px;
  right: 20px;
  flex-direction: column;
  gap: 6px;
}
.viewer-actions button {
  width: 30px;
  height: 30px;
  font-size: 15px;
}

/* Corrección: columna izquierda sin botón de desplegable y categoría visible */
.sidebar {
  grid-template-rows: 38px var(--project-panel-height, minmax(120px, 1fr)) 8px minmax(140px, 1.2fr) !important;
}
.sidebar-toggle-row {
  padding-left: 8px;
}
.sidebar-toggle-row span {
  display: block !important;
}
.row-splitter {
  display: block;
  height: 8px;
  min-height: 8px;
  cursor: row-resize;
  background: #1e293b;
  border-radius: 6px;
  touch-action: none;
}
.row-splitter:hover,
.row-splitter.dragging {
  background: #0066cc;
}

/* Corrección visual del ViewCube */
.view-cube {
  top: 10px !important;
  right: 12px !important;
  width: 92px !important;
  height: 92px !important;
  opacity: 1 !important;
  pointer-events: auto;
  background: transparent;
}
.view-cube::after {
  content: '';
  position: absolute;
  inset: 9px 8px 8px 8px;
  border: 1px solid rgba(71,85,105,0.65);
  box-shadow: 0 6px 16px rgba(15,23,42,0.18);
  pointer-events: none;
  transform: rotate(-8deg) skewY(-2deg);
  background: rgba(255,255,255,0.35);
}
.view-cube .cube-face {
  opacity: 1 !important;
  pointer-events: auto !important;
  z-index: 7;
  border: 1px solid #64748b !important;
  background: linear-gradient(135deg, #ffffff, #d1d5db) !important;
  color: #475569 !important;
  text-shadow: none;
}
.view-cube .cube-front {
  left: 20px !important;
  top: 36px !important;
  width: 48px !important;
  height: 36px !important;
  transform: none !important;
}
.view-cube .cube-top {
  left: 18px !important;
  top: 13px !important;
  width: 50px !important;
  height: 24px !important;
  transform: skewX(-28deg) !important;
}
.view-cube .cube-right {
  left: 67px !important;
  top: 27px !important;
  width: 22px !important;
  height: 42px !important;
  transform: skewY(-38deg) !important;
}
.view-cube .cube-left,
.view-cube .cube-back,
.view-cube .cube-bottom {
  display: none !important;
}
.floating-actions {
  top: 108px !important;
  right: 42px !important;
  display: flex !important;
  flex-direction: column !important;
}
#hideSelectedButton {
  display: grid !important;
  place-items: center;
}

/* ViewCube 3D manipulable, generado en HTML/CSS */
.view-cube {
  position: absolute !important;
  top: 12px !important;
  right: 12px !important;
  width: 104px !important;
  height: 104px !important;
  z-index: 8 !important;
  perspective: 520px !important;
  background: transparent !important;
  pointer-events: auto !important;
  user-select: none;
}
.view-cube::after {
  display: none !important;
}
.view-cube-scene {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  perspective: 520px;
}
.view-cube-object {
  width: 58px;
  height: 58px;
  position: relative;
  transform-style: preserve-3d;
  transform: rotateX(-24deg) rotateY(-38deg);
  transition: transform 0.12s ease-out;
  cursor: grab;
}
.view-cube.dragging .view-cube-object {
  cursor: grabbing;
  transition: none;
}
.view-cube .cube-face {
  display: grid !important;
  place-items: center;
  position: absolute !important;
  left: 0 !important;
  top: 0 !important;
  width: 58px !important;
  height: 58px !important;
  padding: 0 !important;
  opacity: 0.96 !important;
  pointer-events: auto !important;
  border: 1px solid #8b949e !important;
  border-radius: 0 !important;
  background: linear-gradient(135deg, #ffffff, #d1d5db) !important;
  color: #475569 !important;
  font-size: 8px !important;
  font-weight: 800 !important;
  line-height: 1.05 !important;
  text-align: center !important;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.45) !important;
  writing-mode: horizontal-tb !important;
  transform-origin: center center !important;
  backface-visibility: visible !important;
}
.view-cube .cube-face:hover {
  background: linear-gradient(135deg, #dbeafe, #93c5fd) !important;
  color: #003f7f !important;
  border-color: #0066cc !important;
}
.view-cube .cube-front { transform: translateZ(29px) !important; }
.view-cube .cube-back { transform: rotateY(180deg) translateZ(29px) !important; }
.view-cube .cube-right { transform: rotateY(90deg) translateZ(29px) !important; }
.view-cube .cube-left { transform: rotateY(-90deg) translateZ(29px) !important; }
.view-cube .cube-top { transform: rotateX(90deg) translateZ(29px) !important; }
.view-cube .cube-bottom { transform: rotateX(-90deg) translateZ(29px) !important; }
.floating-actions {
  top: 122px !important;
  right: 48px !important;
}

/* ViewCube final: canvas WebGL 3D real */
.view-cube {
  width: 104px !important;
  height: 104px !important;
  top: 12px !important;
  right: 12px !important;
  background: transparent !important;
  border: 0 !important;
  perspective: none !important;
  cursor: grab;
}
.view-cube.dragging {
  cursor: grabbing;
}
#viewCubeCanvas {
  width: 104px;
  height: 104px;
  display: block;
  background: transparent;
}

/* ViewCube más grande y legible */
.view-cube {
  width: 128px !important;
  height: 128px !important;
  top: 10px !important;
  right: 12px !important;
}
#viewCubeCanvas {
  width: 128px !important;
  height: 128px !important;
}
.floating-actions {
  top: 146px !important;
  right: 58px !important;
}

/* Botones del visor más grandes y pegados al borde derecho */
.floating-actions {
  right: 10px !important;
  gap: 7px !important;
}
.viewer-actions button {
  width: 38px !important;
  height: 38px !important;
  font-size: 19px !important;
  border-radius: 9px !important;
}

/* Estado activo para herramientas del visor */
.viewer-actions button.active {
  background: #003f7f !important;
  box-shadow: 0 0 0 2px rgba(96,165,250,0.9), 0 4px 12px rgba(15, 23, 42, 0.18) !important;
}

/* Iconos SVG para botones del visor */
.viewer-actions .tool-icon {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: block;
}

/* Categorías como árbol real: categoría padre + subcategorías reales de Revit */
.category-panel .tree-list {
  overflow: auto;
  min-height: 0;
  white-space: nowrap;
  padding-right: 4px;
  padding-bottom: 6px;
}

.category-tree-group {
  min-width: max-content;
}

.category-parent,
.category-panel .tree-child {
  grid-template-columns: 18px auto max-content max-content;
  min-width: max-content;
  width: max-content;
  max-width: none;
}

.category-parent .tree-name,
.category-panel .tree-child .tree-name {
  overflow: visible;
  text-overflow: clip;
  white-space: nowrap;
  min-width: max-content;
}

.tree-expander {
  width: 16px;
  height: 16px;
  border: 0;
  padding: 0;
  margin: 0;
  background: transparent;
  color: #cbd5e1;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
}

.tree-expander:disabled {
  cursor: default;
  opacity: 0;
}

.tree-expander-placeholder {
  pointer-events: none;
}

.tree-children {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-left: 14px;
  min-width: max-content;
}

.category-panel .tree-child {
  margin-left: 0;
}

/* Scrolls oscuros para listas de árbol */
.tree-list::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.tree-list::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.35);
  border-radius: 999px;
}

.tree-list::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 999px;
  border: 2px solid rgba(15, 23, 42, 0.35);
}

.tree-list::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

/* Evita que las filas del árbol se compriman cuando el panel es muy bajo */
.tree-list {
  align-items: flex-start;
}

.tree-list > *,
.tree-group,
.tree-parent,
.tree-child,
.tree-children {
  flex: 0 0 auto;
  flex-shrink: 0;
}

.tree-parent,
.tree-child {
  min-height: 26px;
  line-height: 16px;
}

.category-panel .tree-list {
  overflow-x: auto !important;
  overflow-y: auto !important;
}

.category-tree-group,
.category-parent,
.category-panel .tree-child,
.tree-children {
  flex-shrink: 0 !important;
}

.loading-panel {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.30);
  backdrop-filter: blur(2px);
  z-index: 1000;
  pointer-events: auto;
}

.loading-panel.hidden { display: none; }

.loading-card {
  width: min(440px, calc(100% - 42px));
  border-radius: 16px;
  padding: 18px 20px;
  background: rgba(15, 23, 42, 0.92);
  color: white;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.30);
  border: 1px solid rgba(255, 255, 255, 0.14);
  display: grid;
  gap: 10px;
}

.loading-card strong {
  font-size: 15px;
  letter-spacing: 0.2px;
}

.loading-card span,
.loading-card small {
  color: #dbeafe;
  font-size: 12px;
}

.loading-bar {
  width: 100%;
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
}

.loading-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 0.18s ease;
}

.loading-bar-fill.indeterminate {
  width: 42% !important;
  animation: loading-indeterminate 1s ease-in-out infinite alternate;
}

@keyframes loading-indeterminate {
  from { transform: translateX(-80%); }
  to { transform: translateX(160%); }
}


.project-panel .tree-parent,
.project-panel .tree-child,
.project-panel .tree-name,
.project-panel .tree-count {
  cursor: pointer;
  user-select: none;
}

.project-panel input[type="checkbox"] {
  cursor: pointer;
}

.project-panel .tree-parent:hover,
.project-panel .tree-child:hover {
  background: rgba(0, 102, 204, 0.34);
  outline: 1px solid rgba(96, 165, 250, 0.45);
}


/* Medición */
.measure-overlay-root {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}
.measure-point-label {
  position: absolute;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: rgba(217, 70, 239, 0.90);
  color: #fff7ed;
  font-size: 11px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.35);
}
.measure-distance-label {
  position: absolute;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.96);
  color: #0f172a;
  border: 1px solid rgba(15,23,42,0.22);
  font-weight: 700;
  font-size: 12px;
  line-height: 1.2;
  transform: translate(-50%, -150%);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.18);
  white-space: nowrap;
}
.measure-axis-box {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 6px;
  background: rgba(31, 41, 55, 0.9);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.28);
  font-size: 12px;
  font-weight: 700;
  color: #e5e7eb;
  white-space: nowrap;
}
.measure-axis-box.hidden,
.measure-distance-label.hidden,
.measure-point-label.hidden {
  display: none;
}
.measure-axis-x { color: #ef4444; }
.measure-axis-y { color: #22c55e; }
.measure-axis-z { color: #60a5fa; }
.measure-axis-box strong {
  color: inherit;
  margin-right: 3px;
}


/* Botones auxiliares de medición */
.viewer-actions button.measure-mini-button {
  width: 28px !important;
  height: 28px !important;
  min-width: 28px !important;
  min-height: 28px !important;
  margin-left: 5px;
  font-size: 18px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  border-radius: 7px !important;
  background: rgba(15, 23, 42, 0.88) !important;
  color: #e5e7eb !important;
}

.viewer-actions button.measure-mini-button:hover {
  background: #0f5ea8 !important;
}

.viewer-actions button.measure-mini-button.hidden {
  display: none !important;
}

.viewer-actions button.section-axis-button {
  margin-left: 0 !important;
  font-size: 12px !important;
  border: 1px solid currentColor !important;
  opacity: 0.72;
}

.viewer-actions button.section-axis-button.active {
  opacity: 1;
  background: #0f5ea8 !important;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.7), 0 0 0 4px currentColor !important;
}

.viewer-actions button.section-axis-x { color: #f87171 !important; }
.viewer-actions button.section-axis-y { color: #4ade80 !important; }
.viewer-actions button.section-axis-z { color: #60a5fa !important; }


/* Etiquetas directas de proyección de mediciones */
.measure-dynamic-label {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 3px 7px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.20);
}

.measure-total-dynamic {
  background: rgba(255, 255, 255, 0.96);
  color: #0f172a;
  border: 1px solid rgba(15, 23, 42, 0.22);
  transform: translate(-50%, -160%);
}

.measure-projection-label {
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.measure-projection-x {
  color: #ff4d4d;
}

.measure-projection-y {
  color: #31d158;
}

.measure-projection-z {
  color: #38bdf8;
}


/* Cabecera Visor 3D: tipografía alineada al menú principal */
.top-brand strong {
  display: inline-flex;
  align-items: center;
  padding: .55rem .9rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0;
  line-height: 1;
  transition: background-color .2s, color .2s;
}

.top-brand:hover strong,
.top-brand:focus-visible strong {
  background: rgba(0, 102, 204, 0.18);
  color: #fff;
}

.header-upload {
  padding: .55rem .9rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1;
}


/* Logo Visor 3D igual al logo de la portada principal */
.top-brand {
  gap: 0;
}

.top-brand img {
  height: 40px !important;
  width: auto !important;
  display: block;
}


/* Edición directa en Propiedades */
.properties-column .property-table td.property-value-cell.editable {
  cursor: text;
  position: relative;
}
.properties-column .property-table td.property-value-cell.editable:hover {
  background: rgba(96, 165, 250, 0.12);
  box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.35);
}
.properties-column .property-table tr.property-row-editable td:first-child::after {
  content: ' ✎';
  color: #60a5fa;
  opacity: 0.75;
  font-size: 11px;
}
.properties-column .property-table td.property-value-cell.readonly {
  color: #cbd5e1;
}
.properties-column .property-table td.property-value-cell.editing {
  padding: 2px 4px;
  background: rgba(15, 23, 42, 0.95);
  box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.65);
}
.property-value-input {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  border: 1px solid rgba(96, 165, 250, 0.65);
  border-radius: 4px;
  background: #020617;
  color: #f8fafc;
  padding: 4px 6px;
  font: inherit;
  outline: none;
}
.property-value-input:focus {
  border-color: #93c5fd;
  box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.22);
}

/* Selección inicial de modelos */
.project-load-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.42);
  backdrop-filter: blur(3px);
}

.project-load-card {
  width: min(620px, calc(100vw - 42px));
  max-height: min(760px, calc(100vh - 42px));
  display: grid;
  grid-template-rows: auto minmax(180px, 1fr) auto;
  gap: 12px;
  border-radius: 18px;
  padding: 18px;
  color: #f8fafc;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.30);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.40);
}

.project-load-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.project-load-header > div {
  display: grid;
  gap: 4px;
}

.project-load-header strong {
  font-size: 16px;
}

.project-load-header span,
.project-load-summary,
.project-load-status,
.project-load-count {
  color: #cbd5e1;
  font-size: 12px;
}

.project-load-close {
  width: 30px;
  height: 30px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 999px;
  background: rgba(30, 41, 59, 0.85);
  color: #f8fafc;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}

.project-load-toolbar,
.project-load-footer {
  display: flex;
  align-items: center;
  gap: 10px;
}

.project-load-toolbar button,
.project-load-secondary,
.project-load-primary {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 10px;
  padding: 8px 12px;
  background: rgba(30, 41, 59, 0.90);
  color: #f8fafc;
  cursor: pointer;
  font-size: 12px;
}

.project-load-primary {
  margin-left: auto;
  border-color: rgba(37, 99, 235, 0.85);
  background: #2563eb;
  font-weight: 700;
}

.project-load-primary:disabled,
.project-load-secondary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.project-load-tree {
  min-height: 180px;
  overflow: auto;
  padding: 8px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.62);
  border: 1px solid rgba(148, 163, 184, 0.20);
}

.project-load-node {
  min-height: 28px;
  display: grid;
  grid-template-columns: 14px 18px minmax(0, 1fr) minmax(72px, auto) minmax(74px, auto);
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 9px;
  cursor: pointer;
  user-select: none;
}

.project-load-node:hover {
  background: rgba(37, 99, 235, 0.22);
}

.project-load-row-selected {
  background: rgba(14, 165, 233, 0.24) !important;
  box-shadow: inset 3px 0 0 #38bdf8;
}

.project-load-expander {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  min-width: 14px;
  height: 18px;
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  color: #93c5fd;
  font-size: 10px;
  line-height: 18px;
  text-align: center;
  cursor: pointer;
}

.project-load-expander:disabled {
  cursor: default;
  opacity: 0;
}

.project-load-parent {
  font-weight: 650;
}

.project-load-child {
  color: #e2e8f0;
}

.project-load-name {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.project-load-status {
  justify-self: end;
  max-width: 110px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.14);
}

.project-load-status-loaded {
  color: #bbf7d0;
  background: rgba(22, 163, 74, 0.18);
}

.project-load-status-changed {
  color: #fde68a;
  background: rgba(217, 119, 6, 0.22);
}

.project-load-status-unloaded,
.project-load-status-new {
  color: #bfdbfe;
  background: rgba(37, 99, 235, 0.20);
}

.project-load-count {
  justify-self: end;
  white-space: nowrap;
}

.project-load-footer {
  padding-top: 2px;
}

.project-load-empty {
  padding: 16px;
  color: #cbd5e1;
  font-size: 13px;
}

.project-tree-node-deferred {
  opacity: 0.86;
}

.project-deferred-badge {
  display: inline-flex;
  margin-left: 8px;
  padding: 1px 6px;
  border-radius: 999px;
  color: #bfdbfe;
  background: rgba(37, 99, 235, 0.25);
  font-size: 10px;
  font-weight: 700;
  vertical-align: middle;
}

.project-load-discovery-card {
  width: min(560px, calc(100vw - 42px));
  grid-template-rows: auto minmax(130px, auto) auto;
}

.project-load-discovery-body {
  min-height: 130px;
  display: grid;
  align-content: center;
  gap: 14px;
}

.project-load-discovery-message {
  padding: 0;
  text-align: center;
  color: #e2e8f0;
}

.project-load-discovery-progress {
  position: relative;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.26);
}

.project-load-discovery-progress-bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -35%;
  width: 35%;
  border-radius: inherit;
  background: #2563eb;
  animation: project-load-discovery-move 1.15s ease-in-out infinite;
}

@keyframes project-load-discovery-move {
  0% { left: -35%; }
  50% { left: 45%; }
  100% { left: 100%; }
}

/* Fase 18.22: trípode local de medición anclado al primer punto. */
.measure-local-axis-label {
  min-width: 18px;
  padding: 2px 5px;
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: 0 2px 7px rgba(15,23,42,0.28);
}
.measure-local-axis-x { background: rgba(239,68,68,0.94); }
.measure-local-axis-y { background: rgba(34,197,94,0.94); }
.measure-local-axis-z { background: rgba(14,165,233,0.94); }