*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-dark: #1e1e1e;
  --bg-panel: #252526;
  --bg-toolbar: #323233;
  --text-primary: #d4d4d4;
  --text-secondary: #858585;
  --accent: #007acc;
  --accent-hover: #1a8cff;
  --accent-subtle: rgba(0, 120, 212, 0.22);
  --border: #3c3c3c;
  --canvas-bg: #1e1e1e;
  --grid-major: rgba(255,255,255,0.08);
  --grid-minor: rgba(255,255,255,0.03);
  --panel-width: 220px;
  --bottom-offset: 28px;
  /* Toolbar layout — fixed 2-row ribbon; groups each contain a 2-row button grid */
  --toolbar-row-h: 34px;
  --toolbar-btn-sz: 26px;                                        /* button square size */
  --toolbar-rows: 2;
  --toolbar-height: calc(var(--toolbar-btn-sz) * var(--toolbar-rows) + 19px); /* 2×26px buttons + 13px label + 2×1px row-gaps + 2×2px padding = 71px */
  --toolbar-minimized-height: 20px;
  --top-offset: calc(24px + var(--toolbar-height)); /* menu-bar + toolbar */
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 13px;
  background: var(--bg-dark);
  color: var(--text-primary);
}

body.cad-task-locked {
  cursor: progress;
  user-select: none;
}

.cad-task-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 17, 20, 0.48);
  backdrop-filter: blur(2px);
  pointer-events: auto;
}

.cad-task-overlay[hidden] {
  display: none;
}

.cad-task-overlay-panel {
  min-width: 240px;
  max-width: min(360px, calc(100vw - 32px));
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(37, 37, 38, 0.96);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.48);
  display: flex;
  align-items: center;
  gap: 14px;
}

.cad-task-spinner {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--accent-hover);
  animation: cad-task-spin 0.8s linear infinite;
  flex: 0 0 auto;
}

.cad-task-label {
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.35;
}

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

/* Menu Bar */
#menu-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 24px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 4px;
  z-index: 101;
  user-select: none;
  font-size: 12px;
}
.menu-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}
.menu-label {
  padding: 0 8px;
  height: 100%;
  display: flex;
  align-items: center;
  cursor: default;
  color: var(--text-secondary);
  border-radius: 2px;
}
.menu-label:hover,
.menu-item.open .menu-label {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
}
.menu-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  padding: 4px 0;
  z-index: 200;
}
.menu-item.open .menu-dropdown {
  display: block;
}
.menu-dropdown button {
  display: block;
  width: 100%;
  padding: 4px 16px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 12px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.menu-dropdown button:hover {
  background: var(--accent);
  color: #fff;
}
.menu-dropdown button.active {
  background: rgba(0, 122, 204, 0.22);
  color: var(--text-primary);
}
.menu-checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 4px 16px;
  color: var(--text-primary);
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  user-select: none;
  box-sizing: border-box;
}
.menu-checkbox-item:hover {
  background: var(--accent);
  color: #fff;
}
.menu-checkbox-item.active {
  background: rgba(0, 122, 204, 0.22);
}
.menu-checkbox-item input {
  margin: 0;
}
.menu-slider-item {
  width: 100%;
  padding: 6px 16px 8px;
  color: var(--text-primary);
  font-size: 12px;
  box-sizing: border-box;
}
.menu-slider-item:hover {
  background: rgba(0, 122, 204, 0.10);
}
.menu-slider-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.menu-slider-item input[type="range"] {
  width: 100%;
  margin: 0;
}
.menu-dropdown hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 4px 0;
}

/* Submenu (nested flyout) */
.menu-submenu-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 16px;
  color: var(--text-primary);
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}
.menu-submenu-item:hover {
  background: var(--accent);
  color: #fff;
}
.submenu-arrow {
  font-size: 8px;
  margin-left: 12px;
  opacity: 0.6;
}
.menu-submenu {
  display: none;
  position: absolute;
  left: 100%;
  top: -4px;
  min-width: 280px;
  white-space: nowrap;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  padding: 4px 0;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  scrollbar-gutter: stable;
  z-index: 201;
}
.menu-submenu-item:hover > .menu-submenu {
  display: block;
}
.menu-submenu button {
  display: block;
  width: 100%;
  padding: 4px 16px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 12px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.menu-submenu button:hover {
  background: var(--accent);
  color: #fff;
}
.menu-submenu button.active {
  background: rgba(0, 122, 204, 0.22);
  color: var(--text-primary);
}
.menu-placeholder {
  display: block;
  padding: 4px 16px;
  color: var(--text-secondary);
  font-size: 12px;
  font-style: italic;
}

/* Override --top-offset when toolbar is minimized/auto so panels reposition */
body.toolbar-minimized, body.toolbar-auto {
  --top-offset: calc(24px + var(--toolbar-minimized-height)); /* menu-bar + slim toolbar handle */
}

/* Toolbar — single horizontal ribbon; each group contains a 2-row button grid */
#toolbar {
  position: fixed;
  top: 24px; left: 0; right: 0;
  height: var(--toolbar-height);
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: row;
  align-items: stretch;
  padding: 2px 48px 2px 4px; /* right padding reserves space for the fixed toggle btn */
  gap: 0;
  z-index: 100;
  user-select: none;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none; /* hide scrollbar (Firefox) */
  transition: height 0.18s ease;
}
#toolbar::-webkit-scrollbar {
  display: none; /* hide scrollbar (Chrome/Safari) */
}

/* ── Toolbar minimize states ── */
/* Minimized: show only the slim handle bar (the toggle button row) */
body.toolbar-minimized #toolbar {
  height: var(--toolbar-minimized-height);
  overflow: hidden;
  padding: 0 48px 0 4px;
}
body.toolbar-minimized #toolbar .toolbar-row,
body.toolbar-minimized #toolbar .toolbar-row-sketch {
  display: none !important;
}

/* Auto-hide: collapsed by default, expands on hover */
body.toolbar-auto #toolbar {
  height: var(--toolbar-minimized-height);
  overflow: hidden;
  padding: 0 48px 0 4px;
  transition: height 0.18s ease;
}
body.toolbar-auto #toolbar:hover {
  height: var(--toolbar-height);
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 48px 2px 4px;
}
body.toolbar-auto #toolbar .toolbar-row,
body.toolbar-auto #toolbar .toolbar-row-sketch {
  display: none !important;
}
body.toolbar-auto #toolbar:hover .toolbar-row {
  display: contents !important;
}
body.toolbar-auto.sketch-on-plane #toolbar:hover .toolbar-row-sketch {
  display: contents !important;
}

/* Toolbar toggle button — position:fixed so it is always viewport-relative and
   never clipped or displaced by the toolbar's overflow:auto scroll container */
#toolbar-toggle-btn {
  position: fixed;
  top: 24px; /* same top edge as #toolbar */
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 0 6px;
  width: 48px;
  height: var(--toolbar-height);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 10px;
  white-space: nowrap;
  background: var(--bg-toolbar);
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  z-index: 101; /* above #toolbar (z-index:100) */
  transition: color 0.12s, background 0.12s;
}
#toolbar-toggle-btn:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.07);
}
/* Slim height in minimized/auto states */
body.toolbar-minimized #toolbar-toggle-btn,
body.toolbar-auto #toolbar-toggle-btn {
  height: var(--toolbar-minimized-height);
}

/* Toolbar rows become transparent flex wrappers so their groups are direct children of #toolbar */
.toolbar-row {
  display: contents;
}

/* Sketch draw/constrain rows — hidden in part/default modes */
.toolbar-row-sketch {
  display: none;
}
body.sketch-on-plane .toolbar-row-sketch {
  display: contents;
}

/* Each group: vertical column — label on top, then a 3-row button grid */
.tool-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  align-self: stretch;
  padding: 2px 3px;
  gap: 1px;
  min-width: 0;
}

/* Vertical separator between groups */
.toolbar-sep {
  width: 1px;
  align-self: stretch;
  background: var(--border);
  margin: 4px 3px;
  flex-shrink: 0;
}

/* Group label — acts as collapse/expand toggle, sits above the button grid */
.group-label {
  font-size: 9px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  user-select: none;
  padding: 0 1px;
  height: 13px;
  line-height: 13px;
  border-radius: 2px;
  flex-shrink: 0;
  transition: color 0.12s;
  white-space: nowrap;
}
.group-label:hover {
  color: var(--text-primary);
}
.group-label::after {
  content: ' ▾';
  font-size: 7px;
  opacity: 0.6;
}
.tg-collapsed .group-label::after {
  content: ' ▸';
}
/* When group is collapsed, hide the button grid */
.tool-group.tg-collapsed > .group-btns {
  display: none !important;
}

/* Button grid: 2 rows, auto columns, column-major flow */
.group-btns {
  display: grid;
  grid-template-rows: repeat(2, var(--toolbar-btn-sz));
  grid-auto-flow: column;
  grid-auto-columns: var(--toolbar-btn-sz);
  gap: 1px;
  flex-shrink: 0;
}

#toolbar button {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
  border-radius: 3px;
  width: 26px;
  height: 26px;
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s;
}

#toolbar button svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
  flex-shrink: 0;
}

#toolbar button:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--border);
}

#toolbar button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

#toolbar .toolbar-select {
  width: 48px;
  height: 26px;
  background: #252526;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 11px;
  padding: 0 3px;
}

#toolbar button#btn-construction.active {
  background: rgba(144,238,144,0.25);
  border-color: #90EE90;
  color: #90EE90;
}

#toolbar button.construction-mode {
  color: #90EE90;
}

#toolbar button.construction-mode.active {
  background: rgba(144,238,144,0.25);
  border-color: #90EE90;
  color: #90EE90;
}

/* Sketch accent button - stands out in toolbar */
#toolbar button.sketch-accent {
  background: rgba(46, 204, 113, 0.18);
  border-color: rgba(46, 204, 113, 0.5);
  color: #2ecc71;
}
#toolbar button.sketch-accent:hover {
  background: rgba(46, 204, 113, 0.3);
  border-color: #2ecc71;
  color: #2ecc71;
}
#toolbar button.sketch-accent.active {
  background: #2ecc71;
  border-color: #2ecc71;
  color: #fff;
}
#toolbar button.sketch-accent.awaiting {
  background: rgba(230, 180, 40, 0.25);
  border-color: rgba(230, 180, 40, 0.7);
  color: #e8b428;
  animation: awaitPulse 1.2s ease-in-out infinite;
}
@keyframes awaitPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(230, 180, 40, 0.4); }
  50% { box-shadow: 0 0 8px 2px rgba(230, 180, 40, 0.5); }
}

/* Properties Panel (unified right sidebar) */
#properties-panel {
  position: fixed;
  top: var(--top-offset);
  right: 0;
  width: var(--panel-width);
  bottom: var(--bottom-offset);
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  z-index: 90;
  user-select: none;
  display: flex;
  flex-direction: column;
}

/* Sidebar sections inside the unified right panel */
.sidebar-section {
  padding: 0 10px;
}
.sidebar-section:first-child {
  padding-top: 0;
}

/* Feature and Parameters panels: hidden by default, shown by .active */
#feature-panel {
  display: none;
  border-bottom: 1px solid var(--border);
  padding: 0;
}
#feature-panel.active {
  display: block;
}

#parameters-panel {
  display: none;
  border-bottom: 1px solid var(--border);
  padding: 0;
}
#parameters-panel.active {
  display: block;
}

/* Properties & Layers sections get normal padding */
#properties-section,
#layers-section {
  padding: 10px;
}

#properties-panel h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

#properties-panel hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 12px 0;
}

.hint {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 11px;
}

.prop-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
  font-size: 12px;
}

.prop-row.prop-row-stepper {
  align-items: stretch;
}

.prop-row label {
  color: var(--text-secondary);
}

.prop-row input, .prop-row select {
  width: 100px;
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2px 4px;
  font-size: 12px;
}

.image-props-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.image-props-header {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.image-props-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.image-props-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
}

.image-props-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.image-props-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(max-content, 1fr));
  width: 100%;
  gap: 6px;
}

.image-props-tab {
  min-height: 28px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 11px;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.image-props-tab:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
}

.image-props-tab.active {
  color: var(--text-primary);
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.image-props-summary {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.image-props-note {
  font-size: 11px;
  line-height: 1.4;
  color: var(--text-secondary);
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255,255,255,0.03);
}

.image-props-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.image-props-actions .app-modal-btn {
  flex: 1 1 0;
  min-width: 0;
}

.image-trace-stats {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255,255,255,0.03);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 7px;
}

.image-stepper {
  display: flex;
  align-items: center;
  gap: 4px;
}

.image-stepper input {
  width: 56px;
  text-align: center;
}

.image-stepper-btn {
  width: 24px;
  height: 24px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
}

.image-stepper-btn:hover {
  background: rgba(255,255,255,0.08);
}

/* Layers */
.layer-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
  margin-bottom: 2px;
}

.layer-row:hover { background: rgba(255,255,255,0.05); }
.layer-row.active-layer { background: rgba(0,120,212,0.2); }

.layer-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.layer-name { flex: 1; }

.layer-visibility {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  padding: 0;
  line-height: 1;
}

#btn-add-layer {
  width: 100%;
  margin-top: 6px;
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--border);
  border-radius: 3px;
  padding: 4px;
  cursor: pointer;
  font-size: 12px;
}

#btn-add-layer:hover {
  background: rgba(0,120,212,0.1);
}

/* Left Panel (Primitives & Constraints) */
#left-panel {
  position: fixed;
  top: var(--top-offset);
  left: 0;
  width: var(--panel-width);
  bottom: var(--bottom-offset);
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  padding: 10px;
  overflow-y: auto;
  z-index: 90;
  user-select: none;
  display: flex;
  flex-direction: column;
}

#left-panel h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

#left-panel hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 8px 0;
  flex-shrink: 0;
}

#primitives-section {
  flex: 1;
  min-height: 80px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

#primitives-list {
  flex: 1;
  overflow-y: auto;
}

.lp-virtual-spacer {
  width: 100%;
  flex: 0 0 auto;
}

.lp-virtual-content {
  display: flex;
  flex-direction: column;
}

#constraints-section {
  flex: 1;
  min-height: 80px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

#constraints-list {
  flex: 1;
  overflow-y: auto;
}

.lp-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 6px;
  min-height: 22px;
  box-sizing: border-box;
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
  margin-bottom: 1px;
  color: var(--text-primary);
  transition: background 0.1s;
}

.lp-item:hover {
  background: rgba(255,255,255,0.08);
}

.lp-item.highlight {
  background: rgba(0,191,255,0.15);
  color: #7fd8ff;
}

.lp-item.selected {
  background: rgba(0,120,212,0.25);
  color: #00bfff;
}

.lp-item .lp-icon {
  width: 14px;
  text-align: center;
  flex-shrink: 0;
  font-size: 10px;
  color: var(--text-secondary);
}

.lp-item .lp-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lp-item .lp-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  padding: 0 2px;
  line-height: 1;
  visibility: hidden;
}

.lp-item .lp-edit {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  padding: 0 2px;
  line-height: 1;
  visibility: hidden;
}

.lp-item:hover .lp-delete,
.lp-item.highlight .lp-delete,
.lp-item:hover .lp-edit,
.lp-item.highlight .lp-edit {
  visibility: visible;
}

.lp-item .lp-delete:hover {
  color: #ff6644;
}

.lp-item .lp-edit:hover {
  color: var(--accent-hover);
}

.lp-item .lp-eye {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 13px;
  padding: 0 3px;
  line-height: 1;
  opacity: 0.5;
}

.lp-item:hover .lp-eye {
  opacity: 1;
}

.lp-item .lp-eye:hover {
  color: var(--accent-hover);
}

.lp-item .lp-var-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: default;
}

.lp-item .lp-var-eq {
  flex-shrink: 0;
  margin: 0 2px;
  color: var(--text-secondary);
}

.lp-item .lp-var-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: text;
  border-radius: 2px;
  padding: 0 3px;
  transition: background 0.15s;
}

.lp-item .lp-var-value:hover {
  background: rgba(255,255,255,0.1);
}

.lp-inline-input {
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--accent);
  color: var(--text-primary);
  font-size: 11px;
  font-family: inherit;
  padding: 1px 4px;
  border-radius: 2px;
  outline: none;
  width: 60px;
  flex-shrink: 1;
  min-width: 30px;
}

.lp-inline-input:focus {
  border-color: var(--accent-hover);
  box-shadow: 0 0 3px rgba(0,191,255,0.3);
}

#variables-section {
  min-height: 60px;
  display: flex;
  flex-direction: column;
}

#variables-list {
  flex: 1;
  overflow-y: auto;
}

#btn-add-variable {
  width: 100%;
  margin-top: 4px;
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--border);
  border-radius: 3px;
  padding: 3px;
  cursor: pointer;
  font-size: 11px;
}

#btn-add-variable:hover {
  background: rgba(0,120,212,0.1);
}

.filter-badge {
  font-size: 10px;
  color: var(--accent);
  cursor: pointer;
}

.filter-badge:hover {
  color: var(--accent-hover);
}

.lp-toggle-all {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  padding: 0 2px;
  margin-left: auto;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.15s;
}

.lp-toggle-all:hover {
  opacity: 1;
  color: var(--accent-hover);
}

.lp-toggle-all.off {
  opacity: 0.3;
  text-decoration: line-through;
}

/* Canvas */
#cad-canvas {
  position: fixed;
  top: var(--top-offset);
  left: var(--panel-width);
  right: var(--panel-width);
  bottom: var(--bottom-offset);
  background: var(--canvas-bg);
  cursor: crosshair;
  touch-action: none;
}

/* Status Bar */
#status-bar {
  position: fixed;
  bottom: 60px; left: 0; right: 0;
  height: 28px;
  background: var(--bg-toolbar);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 16px;
  font-size: 12px;
  z-index: 100;
  user-select: none;
}

#status-tool { color: var(--accent); font-weight: 600; }

/* Mode indicator badge in status bar */
.status-mode {
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.status-mode.sketch-mode {
  background: rgba(33, 150, 243, 0.25);
  color: #64B5F6;
  border: 1px solid rgba(33, 150, 243, 0.4);
}
.status-mode.view-3d-mode {
  background: rgba(76, 175, 80, 0.25);
  color: #81C784;
  border: 1px solid rgba(76, 175, 80, 0.4);
}

/* Smooth transitions for tool groups */
.tool-group[data-group="draw"],
.tool-group[data-group="modify"],
.tool-group[data-group="constrain"],
.tool-group[data-group="pattern"],
.tool-group[data-group="ops"] {
  transition: opacity 0.2s, pointer-events 0s;
}
#status-coords { font-family: 'Consolas', monospace; }
#status-snap, #status-ortho {
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 11px;
  font-weight: 600;
}

#status-snap.active, #status-ortho.active {
  background: var(--accent);
  color: #fff;
}

#status-snap:not(.active), #status-ortho:not(.active) {
  color: var(--text-secondary);
}

#status-message {
  flex: 1;
  text-align: right;
  color: var(--text-secondary);
}

/* Recording / Playback Bar */
#recording-bar {
  position: fixed;
  bottom: 28px; left: 0; right: 0;
  height: 32px;
  background: var(--bg-toolbar);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 4px;
  z-index: 100;
  user-select: none;
}

.rec-btn {
  width: 26px; height: 26px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
}
.rec-btn:hover { background: rgba(255,255,255,0.08); }
.rec-btn:disabled { opacity: 0.3; cursor: default; }
.rec-btn:disabled:hover { background: transparent; }

#btn-record.recording { color: #e53935; border-color: #e53935; animation: record-pulse 1s ease-in-out infinite; }

.rec-sep {
  width: 1px; height: 20px;
  background: var(--border);
  margin: 0 4px;
}

#play-slider {
  flex: 1;
  min-width: 80px;
  height: 4px;
  accent-color: var(--accent);
  cursor: pointer;
}
#play-slider:disabled { opacity: 0.3; cursor: default; }

.rec-label {
  font-size: 11px;
  color: var(--text-secondary);
  min-width: 60px;
  text-align: center;
  font-family: 'Consolas', monospace;
}

.rec-speed-label {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

#play-speed {
  width: 42px;
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 11px;
  text-align: center;
  padding: 1px 2px;
}

.rec-preview {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 340px;
  font-family: 'Consolas', monospace;
  font-size: 11px;
  color: var(--accent);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.15s;
}
.rec-preview.active {
  opacity: 1;
}
.rec-preview.flash {
  animation: rec-flash 0.4s ease-out;
}
@keyframes rec-flash {
  0% { background: rgba(33,150,243,0.3); }
  100% { background: rgba(255,255,255,0.04); }
}

/* Playback position indicator */
.playback-indicator {
  position: fixed;
  z-index: 200;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: left 0.15s ease-out, top 0.15s ease-out;
}
.playback-indicator-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: rgba(255, 82, 82, 0.7);
  border: 2px solid #fff;
  box-shadow: 0 0 8px rgba(255, 82, 82, 0.6), 0 0 2px rgba(0,0,0,0.4);
  animation: indicator-pulse 1.2s ease-in-out infinite;
}
.playback-indicator-label {
  position: absolute;
  top: 22px; left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  font-family: 'Consolas', monospace;
  color: #fff;
  background: rgba(0,0,0,0.7);
  padding: 1px 6px;
  border-radius: 3px;
  white-space: nowrap;
}
@keyframes indicator-pulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.3); opacity: 1; }
}

/* Command Line */
#command-line {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 28px;
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 8px;
  z-index: 100;
}

#command-line label {
  color: var(--text-secondary);
  font-size: 12px;
  white-space: nowrap;
}

#cmd-input {
  flex: 1;
  background: transparent;
  color: var(--text-primary);
  border: none;
  outline: none;
  font-family: 'Consolas', monospace;
  font-size: 13px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-panel); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

/* Context menu */
.context-menu {
  position: fixed;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 0;
  min-width: 160px;
  z-index: 200;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.context-menu-item {
  padding: 6px 16px;
  cursor: pointer;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
}

.context-menu-item:hover {
  background: var(--accent);
  color: #fff;
}

.context-menu-item .shortcut {
  color: var(--text-secondary);
  margin-left: 24px;
}

.context-menu-separator {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* App modal */
.app-modal-root {
  position: fixed;
  inset: 0;
  z-index: 300;
  pointer-events: none;
}

.app-modal-root.open {
  pointer-events: auto;
}

.app-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.app-modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(420px, calc(100vw - 32px));
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 10px 24px rgba(0,0,0,0.5);
  padding: 14px;
  color: var(--text-primary);
}

.app-modal-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.app-modal-message {
  font-size: 12px;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.app-modal-input {
  width: 100%;
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 6px 8px;
  font-size: 12px;
  margin-bottom: 12px;
  outline: none;
}

.app-modal-input:focus {
  border-color: var(--accent);
}

.app-modal-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 12px;
}

.app-modal-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
}

.app-modal-field-label {
  color: var(--text-primary);
  font-weight: 600;
}

.app-modal-select {
  appearance: auto;
}

.app-modal-field-hint {
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1.35;
}

.app-modal-error {
  color: #ff8a80;
  font-size: 11px;
  line-height: 1.35;
}

.app-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.app-modal-btn {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 5px 10px;
  cursor: pointer;
  font-size: 12px;
}

.app-modal-btn:hover {
  background: rgba(255,255,255,0.08);
}

.app-modal-btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.app-modal-btn:disabled:hover {
  background: transparent;
}

.app-modal-btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.app-modal-btn.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Inline dimension input widget */
.dim-inline-widget {
  position: fixed;
  z-index: 400;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0;
  pointer-events: auto;
  animation: dim-inline-fade-in 0.1s ease-out;
}

@keyframes dim-inline-fade-in {
  from { opacity: 0; transform: translateX(-50%) translateY(4px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.dim-inline-tooltip {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 5px 5px 0 0;
  padding: 6px 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.dim-inline-type {
  font-weight: 600;
  color: var(--accent);
  font-size: 11px;
}

.dim-inline-hint {
  color: var(--text-secondary);
  font-size: 10px;
  opacity: 0.8;
}

.dim-inline-driven {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-size: 11px;
  color: var(--text-primary);
  margin-left: auto;
  user-select: none;
}

.dim-inline-driven input[type="checkbox"] {
  accent-color: var(--accent);
  width: 13px;
  height: 13px;
  cursor: pointer;
}

/* Dimension type selector (alternate types) */
.dim-type-selector {
  display: flex;
  gap: 2px;
  padding: 3px 6px 4px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-top: none;
  overflow-x: auto;
}

.dim-type-btn {
  background: var(--bg-dark);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 8px;
  font-size: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.dim-type-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.dim-type-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.dim-inline-input-row {
  display: flex;
  align-items: center;
  gap: 0;
}

.dim-inline-input {
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: 0 0 0 5px;
  padding: 5px 8px;
  font-size: 13px;
  font-family: 'Consolas', monospace;
  outline: none;
  width: 160px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.dim-inline-input:focus {
  border-color: var(--accent-hover);
  box-shadow: 0 0 6px rgba(0,191,255,0.35);
}

.dim-inline-ok {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  border-left: none;
  border-radius: 0 0 5px 0;
  padding: 5px 10px;
  font-size: 13px;
  cursor: pointer;
  line-height: 1;
}

.dim-inline-ok:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* ── Context Menu ── */
.context-menu {
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #252526;
  color: #ccc;
  border: 1px solid #454545;
  border-radius: 5px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  position: fixed;
  user-select: none;
  display: flex;
  flex-direction: column;
  z-index: 10000;
  padding: 4px 0;
  min-width: 180px;
}
.context-menu.hidden { display: none; }

.context-menu .menu-item {
  cursor: default;
  display: flex;
  align-items: center;
  font-size: 13px;
  padding: 0 12px;
  height: 28px;
  color: #ccc;
  position: relative;
}
.context-menu .menu-item .menu-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-right: 8px;
  flex-shrink: 0;
  font-size: 14px;
}
.context-menu .menu-item .menu-label {
  flex: 1;
  white-space: nowrap;
}
.context-menu .menu-item .menu-shortcut {
  margin-left: 24px;
  font-size: 12px;
  color: #888;
  white-space: nowrap;
}
.context-menu .menu-item .menu-submenu-arrow {
  margin-left: 12px;
  font-size: 10px;
  color: #888;
}
.context-menu .menu-item:hover {
  background: #094771;
  color: #fff;
  border-radius: 0;
}
.context-menu .menu-item:first-child { border-top-left-radius: 4px; border-top-right-radius: 4px; }
.context-menu .menu-item:last-child { border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; }
.context-menu .menu-item.disabled {
  color: #5a5a5a;
  background: transparent;
}
.context-menu .menu-item.disabled:hover {
  color: #5a5a5a;
  background: transparent;
  cursor: default;
}
.context-menu hr {
  margin: 4px 0;
  border: none;
  border-top: 1px solid #454545;
}

/* Submenu container */
.context-menu .submenu-container {
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #252526;
  color: #ccc;
  border: 1px solid #454545;
  border-radius: 5px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  padding: 4px 0;
  min-width: 160px;
  display: none;
  flex-direction: column;
  position: absolute;
  left: 100%;
  top: 0;
  z-index: 10001;
}
.context-menu .menu-item:hover > .submenu-container {
  display: flex;
}
.context-menu .submenu-container .menu-item {
  display: flex;
  align-items: center;
  padding: 0 12px;
  height: 28px;
  font-size: 13px;
  color: #ccc;
  cursor: default;
}
.context-menu .submenu-container .menu-item:hover {
  background: #094771;
  color: #fff;
}
.context-menu .submenu-container .menu-item .menu-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-right: 8px;
  flex-shrink: 0;
  font-size: 14px;
}

@media (max-width: 1000px) {
  :root {
    --panel-width: 180px;
  }

  .group-label {
    display: none;
  }

  #status-bar {
    gap: 10px;
    padding: 0 8px;
    font-size: 11px;
  }
}

@media (max-width: 780px) {
  :root {
    --panel-width: 0px;
    --toolbar-row-h: 42px;
    --toolbar-btn-sz: 32px;
  }

  #menu-bar {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  #menu-bar::-webkit-scrollbar {
    display: none;
  }

  #toolbar {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 2px 8px;
  }
  #toolbar::-webkit-scrollbar {
    display: none;
  }

  .tool-group {
    gap: 2px;
    padding: 2px 2px;
  }

  .group-btns {
    grid-template-rows: repeat(2, var(--toolbar-btn-sz));
    grid-auto-columns: var(--toolbar-btn-sz);
    gap: 2px;
  }

  .toolbar-sep {
    margin: 4px 2px;
  }

  #toolbar button {
    width: var(--toolbar-btn-sz);
    height: var(--toolbar-btn-sz);
    border-radius: 6px;
  }

  #toolbar button svg {
    width: 19px;
    height: 19px;
  }

  #toolbar button:disabled {
    display: none;
  }

  /* Hide the right sidebar on mobile — it's not useful for touch */
  #properties-panel {
    display: none;
  }

  /* ── Collapsible lower sidebar on mobile (left panel moved to bottom) ── */
  #left-panel {
    position: fixed;
    right: 0;
    left: 0;
    top: auto;
    bottom: var(--bottom-offset);
    height: 36vh;
    width: auto;
    border-right: none;
    border-top: 1px solid var(--border);
    transition: height 0.2s ease;
    z-index: 200;
  }

  /* When the left panel is collapsed, shrink to just the toggle bar */
  #left-panel.mobile-collapsed {
    height: 32px;
    min-height: 32px;
    overflow: hidden;
  }

  /* Toggle bar for collapsing/expanding the entire sidebar */
  .mobile-sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    background: var(--bg-toolbar);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
    font-size: 11px;
    color: var(--text-secondary);
    gap: 6px;
    flex-shrink: 0;
  }
  .mobile-sidebar-toggle:active {
    background: rgba(255,255,255,0.06);
  }
  .mobile-sidebar-toggle-arrow {
    font-size: 10px;
    transition: transform 0.2s ease;
  }
  #left-panel.mobile-collapsed .mobile-sidebar-toggle-arrow {
    transform: rotate(180deg);
  }

  /* Collapsible sidebar sections on mobile */
  #left-panel .sidebar-section.collapsed > :not(.history-tree-header):not(.feature-panel-header) {
    display: none;
  }
  .history-tree-header,
  .feature-panel-header {
    cursor: pointer;
    user-select: none;
  }
  .history-tree-header h3::after,
  .feature-panel-header h3::after {
    content: ' ▾';
    font-size: 10px;
    opacity: 0.6;
  }
  .sidebar-section.collapsed .history-tree-header h3::after,
  .sidebar-section.collapsed .feature-panel-header h3::after {
    content: ' ▸';
  }

  #cad-canvas {
    left: 0;
    right: 0;
    bottom: calc(var(--bottom-offset) + 36vh);
  }

  #view-3d {
    left: 0;
    right: 0;
    bottom: calc(var(--bottom-offset) + 36vh);
  }

  /* When sidebar is collapsed, viewport expands to fill */
  #left-panel.mobile-collapsed ~ #cad-canvas,
  body:has(#left-panel.mobile-collapsed) #cad-canvas,
  body:has(#left-panel.mobile-collapsed) #view-3d,
  body.mobile-sidebar-collapsed #cad-canvas,
  body.mobile-sidebar-collapsed #view-3d {
    bottom: calc(var(--bottom-offset) + 32px);
  }

  #view-3d,
  #view-3d canvas {
    touch-action: none;
  }

  /* ── Collapsible node tree on mobile ── */
  .node-tree {
    width: 180px;
    max-height: calc(100vh - var(--top-offset) - 84px);
  }
  .node-tree-header {
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .node-tree-header::after {
    content: '▾';
    font-size: 10px;
    opacity: 0.6;
  }
  .node-tree.mobile-collapsed .node-tree-header::after {
    content: '▸';
  }
  .node-tree.mobile-collapsed .node-tree-content {
    display: none;
  }

  /* Hide SNAP/AUTO/ORTHO on mobile — not useful for touch */
  #status-snap,
  #status-autocoincidence,
  #status-ortho {
    display: none;
  }

  /* Smaller font for status bar on mobile */
  #status-bar {
    gap: 6px;
    padding: 0 6px;
    font-size: 10px;
  }
  #status-bar .fov-group {
    display: none;
  }

  /* Even smaller status message text on mobile */
  #status-message {
    font-size: 8px;
    line-height: 1.2;
    max-height: 28px;
    overflow: hidden;
  }
}

/* ── Motion Analysis Panel ── */
.motion-panel {
  position: fixed;
  bottom: var(--bottom-offset);
  left: var(--panel-width);
  right: var(--panel-width);
  background: var(--bg-panel);
  border-top: 2px solid var(--accent);
  z-index: 90;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 50vh;
  overflow-y: auto;
}

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

.motion-title {
  font-weight: 600;
  font-size: 13px;
  color: var(--accent-hover);
}

.motion-header-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

.motion-label {
  display: block;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.motion-select,
.motion-input {
  width: 100%;
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 3px 6px;
  font-size: 12px;
  font-family: 'Consolas', monospace;
}

.motion-select:focus,
.motion-input:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

.motion-row {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.motion-field {
  flex: 1;
}

.motion-section {
  margin-bottom: 2px;
}

.motion-actions {
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

.motion-btn {
  padding: 5px 14px;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
  background: var(--bg-toolbar);
  color: var(--text-primary);
}

.motion-btn.primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.motion-btn.primary:hover {
  background: var(--accent-hover);
}

.motion-btn-sm {
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
  background: var(--bg-toolbar);
  color: var(--text-primary);
}

.motion-btn-sm:hover {
  background: var(--accent);
  color: #fff;
}

.motion-btn-close {
  font-weight: bold;
  border-color: transparent;
  font-size: 14px;
}

.motion-btn-stop {
  background: #6e2020;
  border-color: #8b3030;
  color: #ffa0a0;
}

.motion-btn-stop:hover {
  background: #8b3030;
}

.motion-probes-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 4px;
  max-height: 120px;
  overflow-y: auto;
}

.motion-probe-row {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 2px 4px;
  background: var(--bg-dark);
  border-radius: 3px;
}

.motion-probe-row select {
  flex: 1;
  background: var(--bg-toolbar);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1px 4px;
  font-size: 11px;
  font-family: 'Consolas', monospace;
}

.motion-probe-type {
  font-size: 10px;
  color: var(--accent-hover);
  min-width: 30px;
}

.motion-probe-remove {
  cursor: pointer;
  color: var(--text-secondary);
  border: none;
  background: none;
  font-size: 13px;
  padding: 0 2px;
}

.motion-probe-remove:hover {
  color: #f44;
}

.motion-probe-actions {
  display: flex;
  gap: 4px;
}

/* Playback controls */
.motion-transport {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* FOV slider in toolbar */
/* Tessellation quality selector in status bar */
.tess-quality-group {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-right: 8px;
}

.tess-quality-label {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 600;
  user-select: none;
}

.tess-quality-select {
  background: var(--bg-secondary, #2a2d32);
  color: var(--text-primary, #ddd);
  border: 1px solid var(--border-color, #444);
  border-radius: 3px;
  font-size: 11px;
  padding: 1px 4px;
  cursor: pointer;
  outline: none;
}

.tess-quality-select:hover {
  border-color: var(--accent-color, #4fc3f7);
}

/* FOV slider in status bar */
.fov-group,
.fisheye-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.fov-label,
.fisheye-label {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.5px;
  user-select: none;
}

.fov-slider,
.fisheye-slider {
  width: 90px;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--bg-dark);
  border-radius: 2px;
  outline: none;
}

.fov-slider::-webkit-slider-thumb,
.fisheye-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 1.5px solid var(--bg-panel);
}

.fov-slider::-moz-range-thumb,
.fisheye-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 1.5px solid var(--bg-panel);
}

.fov-value,
.fisheye-value {
  font-size: 11px;
  color: var(--text-secondary);
  min-width: 30px;
  text-align: right;
  font-family: 'Consolas', monospace;
  user-select: none;
}

.status-spacer {
  flex: 1;
}

.motion-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--bg-dark);
  border-radius: 3px;
  outline: none;
}

.motion-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-hover);
  cursor: pointer;
  border: 2px solid var(--bg-panel);
}

.motion-frame-info {
  font-size: 11px;
  color: var(--text-secondary);
  min-width: 60px;
  text-align: right;
  font-family: 'Consolas', monospace;
}

.motion-speed {
  width: 80px;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--bg-dark);
  border-radius: 2px;
}

.motion-speed::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
}

.motion-speed-label {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: 'Consolas', monospace;
  min-width: 30px;
}

.motion-value {
  font-size: 12px;
  font-family: 'Consolas', monospace;
  color: var(--accent-hover);
}

.motion-probe-output {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 11px;
  padding-top: 2px;
}

.motion-probe-output-item {
  display: flex;
  gap: 4px;
  align-items: baseline;
}

.motion-probe-output-item .probe-label {
  color: var(--text-secondary);
}

.motion-probe-output-item .probe-value {
  font-family: 'Consolas', monospace;
  color: var(--accent-hover);
}

/* Viewport adjusts when motion panel is open */
body.motion-active #view-3d {
  bottom: calc(88px + var(--motion-panel-h, 0px));
}

/* Unified 3D View - Full Screen */
#view-3d {
  position: fixed;
  top: var(--top-offset);
  left: var(--panel-width);
  right: var(--panel-width);
  bottom: var(--bottom-offset);
  background: #1e1e1e;
  z-index: 10;
  display: block;
}

/* Legacy 2D canvas remains as offscreen render source */
#cad-canvas {
  display: none !important;
}

/* ── DXF Export Panel (sidebar) ── */
.dxf-export-panel {
  padding: 4px 0;
}
.dxf-export-selection {
  margin-bottom: 8px;
}
.dxf-export-info {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.dxf-export-preview-wrap {
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 6px;
}
.dxf-export-preview {
  display: block;
  width: 100%;
  height: auto;
}
.dxf-export-stats {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 2px;
}
.dxf-export-btn {
  flex: 1;
  padding: 6px 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-toolbar);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 12px;
}
.dxf-export-btn:hover { background: var(--accent); color: #fff; }
.dxf-export-btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.dxf-export-btn.primary:hover { background: #005fa3; }

/* ── DXF Preview Overlay (full-screen) ── */
.dxf-preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: #0d1117;
  display: flex;
  flex-direction: column;
}
.dxf-preview-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
  padding: 0 12px;
  background: #161b22;
  border-bottom: 1px solid #30363d;
  flex-shrink: 0;
}
.dxf-preview-title {
  font-size: 13px;
  color: #c9d1d9;
}
.dxf-preview-btn {
  padding: 5px 16px;
  border: 1px solid #30363d;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  background: #21262d;
  color: #c9d1d9;
}
.dxf-preview-btn:hover { background: #30363d; }
.dxf-preview-btn.download { background: var(--accent); color: #fff; border-color: var(--accent); }
.dxf-preview-btn.download:hover { background: #005fa3; }
.dxf-preview-btn.exit { background: transparent; border-color: #30363d; }
.dxf-preview-btn.exit:hover { background: #30363d; }
.dxf-preview-canvas {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
}

/* Adjust left panel for unified view */
#left-panel {
  z-index: 20; /* Above 3D view */
}

.feature-panel-header {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-toolbar);
}

.feature-panel-header h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.feature-list {
  padding: 8px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  margin: 4px 0;
  background: rgba(255,255,255,0.03);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s;
  border-left: 3px solid transparent;
}

.feature-item:hover {
  background: rgba(255,255,255,0.06);
}

.feature-item.selected {
  background: rgba(0, 122, 204, 0.2);
  border-left-color: var(--accent);
}

.feature-item.suppressed {
  opacity: 0.5;
  border-left-color: #f44336;
}

.feature-icon {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.feature-icon svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.feature-info {
  flex: 1;
  min-width: 0;
}

.feature-name {
  font-weight: 500;
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feature-type {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: capitalize;
}

.feature-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.feature-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 2px 6px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.15s;
}

.feature-btn:hover {
  background: rgba(255,255,255,0.1);
}

/* Locked state — dims panel and disables pointer interactions */
#feature-panel.locked .feature-list {
  opacity: 0.45;
  pointer-events: none;
}

.parameters-panel-header {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-toolbar);
}

.parameters-panel-header h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.parameters-header-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.parameters-header-icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.parameters-content {
  padding: 12px;
}

.parameter-row {
  margin-bottom: 12px;
}

.parameter-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.parameter-input {
  width: 100%;
  padding: 6px 8px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.parameter-input:focus {
  outline: none;
  border-color: var(--accent);
}

.parameter-selection-field {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  cursor: pointer;
  text-align: left;
}

.parameter-selection-field:hover {
  border-color: var(--accent);
}

.parameter-selection-field.active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.parameter-selection-field-value {
  color: var(--text-primary);
  font-size: 13px;
}

.parameter-selection-field-hint {
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1.3;
}

select.parameter-input {
  appearance: auto;
  cursor: pointer;
}

.parameter-info {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.parameter-info p {
  margin-bottom: 6px;
}

.parameter-subsection-title {
  margin: 12px 0 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.parameter-advanced-details {
  margin: 12px 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: color-mix(in srgb, var(--bg-dark) 88%, transparent);
}

.parameter-advanced-details > summary {
  cursor: pointer;
  padding: 8px 10px;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  user-select: none;
}

.parameter-advanced-body {
  padding: 0 10px 10px;
}

.parameter-array-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.parameter-array-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.parameter-action-button {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-dark);
  color: var(--text-primary);
  font-size: 12px;
  cursor: pointer;
}

.parameter-action-button:hover {
  border-color: var(--accent);
}

.parameter-action-button-danger {
  color: var(--danger, #ff8f8f);
}

/* Left feature-params section reuses parameter styles */
#left-feature-params-content {
  padding: 8px 0;
}
#left-feature-params-content .parameter-row {
  margin-bottom: 10px;
}
#left-feature-params-content .hint {
  padding: 4px 0;
}

body.workspace-cam #left-feature-params-content {
  padding: 4px 0;
}

body.workspace-cam #left-feature-params-content .parameter-row {
  margin-bottom: 8px;
}

body.workspace-cam #left-feature-params-content .parameter-label {
  margin-bottom: 3px;
}

body.workspace-cam #left-feature-params-content .parameter-input {
  padding: 5px 7px;
}
.parameter-value {
  font-size: 13px;
  color: var(--text-primary);
  text-transform: capitalize;
}

/* Edge Selection List — chamfer/fillet mode */
.edge-selection-hint {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 8px;
}
.edge-selection-list {
  margin-bottom: 8px;
}
.edge-selection-empty {
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.6;
  padding: 4px 0;
}
.edge-selection-items {
  max-height: 140px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg-dark);
}
.edge-selection-item {
  display: flex;
  align-items: center;
  padding: 3px 6px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  gap: 4px;
}
.edge-selection-item:last-child {
  border-bottom: none;
}
.edge-selection-item:hover {
  background: rgba(0, 180, 255, 0.1);
}
.edge-selection-label {
  flex: 1;
  font-size: 11px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: default;
}
.edge-selection-remove {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.edge-selection-remove:hover {
  background: rgba(244, 67, 54, 0.3);
  color: #f44336;
}
.edge-selection-clear {
  margin-top: 4px;
  width: 100%;
  padding: 4px;
  font-size: 11px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-secondary);
  cursor: pointer;
}
.edge-selection-clear:hover {
  background: rgba(244, 67, 54, 0.15);
  color: #f44336;
  border-color: rgba(244, 67, 54, 0.4);
}

/* ================================================================
   History Tree Panel
   ================================================================ */

.history-tree-header {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-toolbar);
}

.history-tree-header h3 {
  margin: 0;
  font-size: 12px;
  color: var(--text-primary);
}

.history-tree-list {
  padding: 4px 8px;
  position: relative;
}

.history-node {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  margin: 2px 0;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.12s;
  font-size: 12px;
  border-left: 3px solid transparent;
}

.history-node:hover {
  background: rgba(255,255,255,0.06);
}

.history-node.selected {
  background: rgba(0, 122, 204, 0.2);
  border-left-color: var(--accent);
}

.history-node.editing {
  background: rgba(255, 193, 7, 0.15);
  border-left-color: #ffc107;
}

.history-node.rolled-back {
  opacity: 0.35;
}

.history-node.status-suppressed {
  opacity: 0.45;
  text-decoration: line-through;
}

.history-node.status-failed {
  border-left-color: #f44336;
}

.history-node.status-non-exact {
  border-left-color: #ff9800;
}

.history-node-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  width: 16px;
  height: 16px;
}

.history-node-icon svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.history-node-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-primary);
}

.history-node-badge {
  flex-shrink: 0;
  font-size: 11px;
}

.history-key-count {
  flex-shrink: 0;
  font-size: 10px;
  color: var(--text-secondary);
  opacity: 0.7;
}

.badge-exact  { color: #4caf50; }
.badge-nonexact { color: #ff9800; }
.badge-failed { color: #f44336; }
.badge-suppressed { color: var(--text-secondary); }
.badge-error { color: #f44336; }

.history-pointer-bar {
  height: 2px;
  background: var(--accent);
  margin: 4px 0;
  border-radius: 1px;
}

/* ================================================================
   Diagnostics Panel
   ================================================================ */

.diag-panel-header {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-toolbar);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.diag-panel-header h3 {
  margin: 0;
  font-size: 12px;
  color: var(--text-primary);
}

.diag-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  padding: 2px 4px;
}

.diag-panel-body {
  padding: 6px 10px;
  max-height: 200px;
  overflow-y: auto;
}

.diag-empty {
  text-align: center;
  padding: 8px 0;
}

.diag-entry {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 4px 0;
  font-size: 11px;
  line-height: 1.4;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.diag-entry:last-child {
  border-bottom: none;
}

.diag-icon {
  flex-shrink: 0;
  width: 14px;
  text-align: center;
}

.diag-message {
  flex: 1;
  color: var(--text-primary);
  word-break: break-word;
}

.diag-category {
  flex-shrink: 0;
  font-size: 9px;
  color: var(--text-secondary);
  opacity: 0.6;
  text-transform: uppercase;
}

.diag-info .diag-icon { color: var(--accent); }
.diag-warning .diag-icon { color: #ff9800; }
.diag-error .diag-icon { color: #f44336; }

/* ================================================================
   Feature Edit Session Overlay
   ================================================================ */

.edit-session-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255, 193, 7, 0.1);
  border: 1px solid rgba(255, 193, 7, 0.3);
  border-radius: 4px;
  margin: 8px;
  font-size: 12px;
}

.edit-session-bar .session-label {
  flex: 1;
  color: var(--text-primary);
}

.edit-session-bar .session-cache-info {
  font-size: 10px;
  color: var(--text-secondary);
}

.edit-session-bar button {
  padding: 4px 10px;
  font-size: 11px;
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  background: var(--bg-dark);
  color: var(--text-primary);
  transition: background 0.15s;
}

.edit-session-bar button:hover {
  background: rgba(255,255,255,0.08);
}

.edit-session-bar button.commit-btn {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.edit-session-bar button.commit-btn:hover {
  background: rgba(0, 122, 204, 0.85);
}

.edit-session-bar button.cancel-btn {
  border-color: rgba(244, 67, 54, 0.4);
}

.edit-session-bar button.cancel-btn:hover {
  background: rgba(244, 67, 54, 0.15);
  color: #f44336;
}

/* In Part mode, hide the right sidebar parameters panel (it lives in the left panel now) */
body.workspace-part #parameters-panel,
body.workspace-cam #parameters-panel {
  display: none !important;
}

/* Node Tree Overlay — transparent panel in top-left of viewport */
.node-tree {
  position: fixed;
  top: calc(var(--top-offset) + 8px);
  left: calc(var(--panel-width) + 8px);
  width: 200px;
  max-height: calc(100vh - var(--top-offset) - 84px);
  background: rgba(30, 30, 30, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  z-index: 25;
  font-size: 12px;
  color: var(--text-secondary);
  overflow-y: auto;
  pointer-events: auto;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

body.workspace-cam .node-tree {
  width: calc(var(--panel-width) - 16px);
}

.node-tree-header {
  padding: 6px 10px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  user-select: none;
}

body.workspace-cam .node-tree-header {
  padding: 5px 8px;
}

.node-tree-content {
  padding: 4px 0;
}

body.workspace-cam .node-tree-content {
  padding: 2px 0;
}

.node-tree-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  cursor: default;
  user-select: none;
  transition: background 0.12s;
}

.node-tree-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.node-tree-item.active {
  background: rgba(0, 122, 204, 0.25);
  color: var(--text-primary);
}

.node-tree-plane {
  cursor: pointer;
}

.node-tree-plane.inactive {
  cursor: default;
  opacity: 0.5;
}

.node-tree-plane.hovered {
  background: rgba(135, 206, 235, 0.15);
  color: var(--text-primary);
}

.node-tree-plane.inactive.hovered {
  background: transparent;
}

.node-tree-plane.selected {
  background: rgba(0, 122, 204, 0.35);
  color: var(--text-primary);
  outline: 1px solid rgba(0, 122, 204, 0.6);
  outline-offset: -1px;
}

.node-tree-plane.inactive.selected {
  background: transparent;
  outline: none;
}

.node-tree-eye {
  flex-shrink: 0;
  width: 20px;
  text-align: center;
  font-size: 11px;
  cursor: pointer;
  opacity: 0.6;
  margin-right: 2px;
}

body.workspace-cam .node-tree-eye {
  width: 16px;
  margin-right: 0;
}

.node-tree-eye:hover {
  opacity: 1.0;
}

.node-tree-hidden-indicator {
  font-size: 10px;
  opacity: 0.5;
  margin-left: 4px;
}

.node-tree-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  text-align: center;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.node-tree-icon svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.node-tree-child-icon {
  opacity: 0.6;
  margin-right: 4px;
}

.node-tree-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Locked state — dims tree and disables pointer interactions on items */
.node-tree.locked .node-tree-content {
  opacity: 0.45;
  pointer-events: none;
}
.node-tree.locked .node-tree-content .node-tree-eye {
  pointer-events: auto;
  opacity: 0.5;
}

.node-tree-children {
  padding-left: 16px;
}

body.workspace-cam .node-tree-children {
  padding-left: 12px;
}

.node-tree-features {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  margin-top: 2px;
  padding-top: 2px;
}

.node-tree-feature {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}

body.workspace-cam .node-tree-feature {
  gap: 5px;
  padding: 2px 8px;
}

.node-tree-feature:hover {
  background: rgba(255, 255, 255, 0.06);
}

.node-tree-feature.active {
  background: rgba(0, 122, 204, 0.25);
  color: var(--text-primary);
}

.node-tree-feature.has-error {
  color: var(--text-primary);
}

.node-tree-feature.has-error .node-tree-label {
  color: #ffb4a8;
}

.node-tree-feature.has-warning .node-tree-label {
  color: #ffd27a;
}

.node-tree-status {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  margin-left: auto;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
}

.node-tree-status-error {
  color: #1d0907;
  background: #ff7a66;
}

.node-tree-status-warning {
  color: #241800;
  background: #f5b83b;
}

.node-tree-feature.suppressed {
  opacity: 0.4;
  text-decoration: line-through;
}

.node-tree-folder-arrow {
  flex-shrink: 0;
  width: 12px;
  text-align: center;
  font-size: 10px;
  cursor: pointer;
  opacity: 0.6;
  user-select: none;
}

.node-tree-folder-arrow:hover {
  opacity: 1.0;
}

.node-tree-child-feature {
  padding-left: 26px;
  font-size: 11px;
  opacity: 0.8;
}

body.workspace-cam .node-tree-child-feature {
  padding-left: 18px;
}

/* ── Suppression / Rollback Bar ── */
.node-tree-rollback-bar {
  position: relative;
  height: 6px;
  cursor: ns-resize;
  user-select: none;
  margin: 0 6px;
  display: flex;
  align-items: center;
}

.node-tree-rollback-bar::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: #f59e0b;
  border-radius: 1px;
  transform: translateY(-50%);
  box-shadow: 0 0 4px rgba(245, 158, 11, 0.4);
}

.node-tree-rollback-bar:hover::before,
.node-tree-rollback-bar.dragging::before {
  height: 3px;
  background: #fbbf24;
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.6);
}

.node-tree-rollback-bar::after {
  content: '▼';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 7px;
  color: #f59e0b;
  line-height: 1;
}

/* Features below the rollback bar */
.node-tree-feature.rolled-back {
  opacity: 0.35;
  text-decoration: line-through;
  pointer-events: auto;
}

/* ── Quick-Start Page ── */
.startup-loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 550;
  background:
    radial-gradient(circle at top, rgba(0, 122, 204, 0.16), transparent 38%),
    linear-gradient(180deg, #1c1f24 0%, #13161a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.startup-loading-overlay.hidden {
  display: none;
}

.startup-loading-card {
  width: min(520px, calc(100vw - 40px));
  padding: 32px 28px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(30, 30, 30, 0.92);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.startup-loading-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.startup-loading-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.startup-loading-track {
  position: relative;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.startup-loading-bar {
  height: 100%;
  width: 20%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2a9df4 0%, #69d2e7 100%);
  box-shadow: 0 0 24px rgba(42, 157, 244, 0.35);
  transition: width 0.35s ease;
}

.startup-loading-step-counter {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.52);
}

.startup-loading-steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.startup-loading-step {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.startup-loading-step-bullet {
  width: 10px;
  height: 10px;
  flex: 0 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.startup-loading-step.is-active {
  color: rgba(255, 255, 255, 0.94);
}

.startup-loading-step.is-active .startup-loading-step-bullet {
  background: linear-gradient(180deg, #5ab3ff 0%, #2a9df4 100%);
  border-color: rgba(105, 210, 231, 0.65);
  box-shadow: 0 0 0 4px rgba(42, 157, 244, 0.16);
  transform: scale(1.05);
}

.startup-loading-step.is-done {
  color: rgba(255, 255, 255, 0.72);
}

.startup-loading-step.is-done .startup-loading-step-bullet {
  background: rgba(105, 210, 231, 0.9);
  border-color: rgba(105, 210, 231, 0.9);
}

.startup-loading-actions {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
}

.startup-console-button {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

.startup-console-button:hover {
  background: rgba(255, 255, 255, 0.12);
}

.quick-start-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

.quick-start-overlay.hidden {
  display: none;
}

.console-view {
  position: fixed;
  inset: 0;
  z-index: 560;
  background: var(--bg-dark);
  display: none;
  flex-direction: column;
}

body.console-view-open .console-view {
  display: flex;
}

.console-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border);
}

.console-view-heading {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.console-view-heading h2 {
  font-size: 20px;
  font-weight: 600;
}

.console-entry-count {
  color: var(--text-secondary);
  font-size: 12px;
}

.console-view-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.console-control {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 12px;
}

.console-control select,
.console-view-actions button {
  background: var(--bg-panel);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  padding: 6px 10px;
}

.console-view-actions button {
  cursor: pointer;
}

.console-view-actions button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.console-checkbox input {
  margin: 0;
}

.console-view-body {
  min-height: 0;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  padding: 0 20px 20px;
}

.console-view-columns,
.console-entry {
  display: grid;
  grid-template-columns: 64px 126px 74px minmax(120px, 180px) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.console-view-columns {
  padding: 10px 12px;
  color: var(--text-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.console-entries {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #161616;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.console-entry {
  padding: 10px 12px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.console-entry:first-child {
  border-top: none;
}

.console-entry.empty {
  display: block;
  color: var(--text-secondary);
}

.console-entry-line,
.console-entry-time,
.console-entry-source {
  color: var(--text-secondary);
}

.console-entry-level {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.console-entry.level-debug .console-entry-level,
.console-entry.level-log .console-entry-level,
.console-entry.level-info .console-entry-level {
  background: rgba(42, 157, 244, 0.16);
  color: #7ec8ff;
}

.console-entry.level-warn .console-entry-level {
  background: rgba(255, 193, 7, 0.16);
  color: #ffd166;
}

.console-entry.level-error .console-entry-level {
  background: rgba(244, 67, 54, 0.16);
  color: #ff8a80;
}

.console-entry-message {
  min-width: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.console-value-text + .console-value-text,
.console-value-text + .console-tree,
.console-tree + .console-value-text,
.console-tree + .console-tree {
  margin-left: 8px;
}

.console-value-string {
  color: #ce9178;
}

.console-value-number,
.console-value-boolean,
.console-value-bigint {
  color: #b5cea8;
}

.console-value-null,
.console-value-undefined {
  color: #808080;
}

.console-value-function {
  color: #dcdcaa;
}

.console-value-symbol,
.console-value-date {
  color: #4fc1ff;
}

.console-tree {
  display: inline-block;
  min-width: 0;
}

.console-tree > summary {
  cursor: pointer;
  list-style: none;
  color: #9cdcfe;
}

.console-tree > summary::-webkit-details-marker {
  display: none;
}

.console-tree-children {
  margin: 6px 0 0 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.console-tree-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.console-tree-key {
  color: #9cdcfe;
}

@media (max-width: 780px) {
  .console-view-header {
    padding: 12px;
  }

  .console-view-body {
    padding: 0 12px 12px;
  }

  .console-view-columns {
    display: none;
  }

  .console-entry {
    grid-template-columns: 56px 1fr;
    gap: 6px 10px;
  }

  .console-entry-time,
  .console-entry-level,
  .console-entry-source,
  .console-entry-message {
    grid-column: 2;
  }

  .console-entry-line {
    grid-row: 1 / span 4;
  }
}

.quick-start-content {
  text-align: center;
  max-width: 700px;
  padding: 40px 24px;
}

.quick-start-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.quick-start-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.quick-start-options {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.quick-start-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 20px 18px;
  width: 180px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  color: var(--text-primary);
}

.quick-start-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.quick-start-card:active {
  transform: translateY(0);
}

.quick-start-card.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.qs-icon {
  width: 48px;
  height: 48px;
}

.qs-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
}

.qs-label {
  font-size: 15px;
  font-weight: 600;
}

.qs-desc {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* ── Part Mode Toolbar ── */
.part-mode-only {
  display: none;
}

.cam-mode-only {
  display: none;
}

body.workspace-part .part-mode-only {
  display: flex;
}

body.workspace-cam .cam-mode-only {
  display: flex;
}

body.workspace-cam {
  --panel-width: 280px;
}

/* In Part workspace (not sketching): hide layers section (sketch-specific) */
body.workspace-part #layers-section,
body.workspace-part #layers-separator,
body.workspace-cam #layers-section,
body.workspace-cam #layers-separator {
  display: none;
}

/* In Part workspace (not sketching): hide sketch-only left panel sections */
body.workspace-part .sketch-only-section,
body.workspace-cam .sketch-only-section {
  display: none !important;
}

body.workspace-cam #variables-section,
body.workspace-cam .left-panel-vars-sep {
  display: none !important;
}
/* Feature properties section (Part mode only, hidden by default) */
#left-feature-params {
  display: none;
}
body.workspace-part #left-feature-params {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 60px;
  overflow-y: auto;
}
body.workspace-cam #left-feature-params {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 60px;
  overflow-y: auto;
}

body.workspace-cam #left-panel {
  padding: 8px;
}

body.workspace-cam #left-panel h3 {
  margin-bottom: 6px;
}

/* Show layers when sketching within Part workspace */
body.workspace-part.sketch-on-plane #layers-section,
body.workspace-part.sketch-on-plane #layers-separator {
  display: block !important;
}
/* Restore sketch sections when sketching within Part workspace */
body.workspace-part.sketch-on-plane #primitives-section,
body.workspace-part.sketch-on-plane #constraints-section {
  display: flex !important;
}
body.workspace-part.sketch-on-plane #dimensions-section {
  display: block !important;
}
body.workspace-part.sketch-on-plane hr.sketch-only-section {
  display: block !important;
}
/* Hide feature params when sketching */
body.workspace-part.sketch-on-plane #left-feature-params {
  display: none !important;
}

/* In Part workspace (not sketching): hide sketch-specific tool groups (now in toolbar-row-sketch rows) */
/* toolbar-row-sketch is already hidden by default; nothing extra needed here */
/* In Part workspace (not sketching): hide sketch-only edit buttons */
body.workspace-part .sketch-tool-only {
  display: none;
}

/* Part mode status indicator */
.status-mode.part-mode {
  background: rgba(255, 152, 0, 0.25);
  color: #FFB74D;
  border: 1px solid rgba(255, 152, 0, 0.4);
}

.status-mode.cam-mode {
  background: rgba(76, 175, 80, 0.22);
  color: #9be29f;
  border: 1px solid rgba(76, 175, 80, 0.42);
}

.cam-panel-section {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 0;
}

.cam-panel-section:first-child {
  border-top: none;
  padding-top: 0;
}

.cam-stage-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 10px;
}

.cam-stage-nav button {
  min-height: 28px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

.cam-stage-nav button.active,
.cam-panel-button.active {
  border-color: var(--accent);
  background: rgba(0, 122, 204, 0.22);
  color: var(--text-primary);
}

.cam-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
}

body.workspace-cam .cam-panel-section {
  padding: 6px 0;
}

body.workspace-cam .cam-panel-heading {
  margin-bottom: 6px;
}

.cam-panel-note {
  margin: 6px 0;
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1.35;
}

body.workspace-cam .cam-panel-note {
  margin: 4px 0;
}

.cam-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

body.workspace-cam .cam-action-row {
  gap: 4px;
  margin-top: 6px;
}

.cam-action-row button,
.cam-panel-button {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font: inherit;
  font-size: 11px;
  padding: 6px 8px;
  cursor: pointer;
}

.cam-action-row button:hover,
.cam-panel-button:hover {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.1);
}

body.workspace-cam .cam-action-row button,
body.workspace-cam .cam-panel-button {
  padding: 5px 7px;
}

.cam-panel-button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.cam-panel-button:disabled {
  cursor: default;
  opacity: 0.55;
}

.cam-panel-summary {
  margin: 8px 0;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1.4;
}

body.workspace-cam .cam-panel-summary {
  margin: 6px 0;
  padding: 6px 7px;
}

.cam-panel-note.warning {
  color: #ffcc80;
}

.cam-panel-note.error {
  color: #ff7a7a;
}

.cam-slider-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 38px;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
  color: var(--text-secondary);
  font-size: 11px;
}

.cam-slider-row input[type="range"] {
  width: 100%;
}

.cam-operation-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cam-operation-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    rgba(22, 22, 22, 0.94);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  transition: border-color 120ms ease, transform 120ms ease, background 120ms ease;
}

.cam-operation-item:hover {
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.cam-operation-item.active {
  border-color: rgba(255, 255, 255, 0.22);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03)),
    rgba(34, 34, 34, 0.98);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.16);
}

.cam-operation-item.compact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 10px;
  box-shadow: none;
}

.cam-operation-item.compact:hover {
  transform: none;
}

.cam-operation-item.compact .cam-operation-main {
  gap: 3px;
}

.cam-operation-item.compact .cam-operation-header {
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
}

.cam-operation-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.cam-operation-item.compact .cam-operation-title {
  font-size: 12px;
  line-height: 1.15;
}

.cam-operation-meta-line {
  color: var(--text-secondary);
  font-size: 10px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cam-operation-item.compact .cam-operation-controls {
  align-self: center;
  justify-content: flex-end;
  padding-top: 0;
  border-top: none;
}

.cam-operation-item.compact .cam-operation-actions {
  gap: 1px;
}

.cam-operation-summary.compact {
  color: var(--text-secondary);
  font-size: 10px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cam-operation-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cam-operation-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.cam-operation-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.cam-operation-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.cam-operation-control {
  min-width: 28px;
  max-width: 58px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font: inherit;
  font-size: 10px;
  padding: 4px 5px;
  cursor: pointer;
}

.cam-operation-control:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.cam-operation-control.danger {
  color: #ffb4a8;
}

.cam-operation-control:disabled {
  cursor: default;
  opacity: 0.42;
}

.cam-operation-control.icon-only {
  min-width: 24px;
  max-width: 24px;
  padding: 0;
  background: transparent;
  border-color: transparent;
  font-size: 12px;
  line-height: 1;
  opacity: 0.72;
}

.cam-operation-control.icon-only:hover {
  border-color: transparent;
  opacity: 1;
}

.cam-operation-control.cam-operation-visibility {
  font-size: 13px;
}

.cam-plan-browser {
  display: flex;
  flex-direction: column;
  margin-top: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

.cam-plan-group + .cam-plan-group {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.cam-plan-group-heading {
  padding: 8px 10px 6px;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.cam-plan-browser .node-tree-feature {
  gap: 8px;
  padding: 6px 8px 6px 10px;
}

.cam-plan-browser .node-tree-feature:hover {
  background: rgba(255, 255, 255, 0.05);
}

.cam-plan-browser .node-tree-feature.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.cam-plan-row-labels {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cam-plan-row-meta {
  color: var(--text-secondary);
  font-size: 10px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cam-plan-row-controls {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.cam-plan-row-controls .cam-operation-control.icon-only {
  min-width: 22px;
  max-width: 22px;
}

.cam-operation-control.cam-plan-toggle {
  min-width: 32px;
  max-width: none;
  padding: 3px 6px;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.08);
}

.cam-plan-group .cam-panel-note {
  margin: 0;
  padding: 0 10px 10px;
}

.cam-operation-title {
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.cam-operation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cam-operation-stat {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.cam-operation-summary {
  color: var(--text-primary);
  font-size: 11px;
  line-height: 1.45;
}

.cam-operation-summary.warning {
  color: #ffd0b0;
}

.cam-operation-summary.error {
  color: #ff9a9a;
}

.cam-pill {
  border-radius: 999px;
  padding: 4px 9px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.cam-pill.muted {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
}

/* In Part workspace, re-enable sketch tools during sketch-on-plane */
body.workspace-part.sketch-on-plane .sketch-tool-only {
  display: inline-flex !important;
}

/* In sketch-on-plane mode: hide Part-only tools and 3D group */
body.sketch-on-plane .part-mode-only {
  display: none !important;
}
body.sketch-on-plane .tool-group[data-group="part-sketch"],
body.sketch-on-plane .tool-group[data-group="part-features"],
body.sketch-on-plane .tool-group[data-group="part-ops"],
body.sketch-on-plane .tool-group[data-group="part-tools"] {
  display: none !important;
}
body.sketch-on-plane #node-tree {
  display: none;
}
body.sketch-on-plane #feature-panel,
body.sketch-on-plane #parameters-panel {
  display: none !important;
}

/* ── Exit Sketch Button ── */
.exit-sketch-btn {
  position: fixed;
  top: calc(var(--top-offset) + 8px);
  left: calc(var(--panel-width) + 8px);
  z-index: 200;
  display: none;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: rgba(220, 60, 60, 0.9);
  border: 1.5px solid rgba(240, 80, 80, 0.95);
  border-radius: 6px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.08);
  transition: background 0.15s, box-shadow 0.15s;
  letter-spacing: 0.3px;
}
.exit-sketch-btn:hover {
  background: rgba(240, 70, 70, 1);
  box-shadow: 0 4px 14px rgba(220, 60, 60, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.exit-sketch-btn:active {
  opacity: 0.85;
}
.exit-sketch-btn svg {
  flex-shrink: 0;
}
.exit-extrude-btn {
  position: fixed;
  top: calc(var(--top-offset) + 8px);
  left: calc(var(--panel-width) + 216px);
  z-index: 200;
  display: none;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: rgba(220, 60, 60, 0.9);
  border: 1.5px solid rgba(240, 80, 80, 0.95);
  border-radius: 6px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.08);
  transition: background 0.15s, box-shadow 0.15s;
  letter-spacing: 0.3px;
}
.exit-extrude-btn:hover {
  background: rgba(240, 70, 70, 1);
  box-shadow: 0 4px 14px rgba(220, 60, 60, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.exit-extrude-btn:active {
  opacity: 0.85;
}
.exit-extrude-btn svg {
  flex-shrink: 0;
}

/* ── Scene Manager Section (left panel) ── */
#scene-manager-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 60px;
  overflow-y: auto;
}

/* Scene Manager active: hide part editing tools, feature props, node tree */
body.scene-manager-active .part-mode-only[data-group="part-sketch"],
body.scene-manager-active .part-mode-only[data-group="part-features"],
body.scene-manager-active .part-mode-only[data-group="part-ops"],
body.scene-manager-active .part-mode-only[data-group="part-tools"] {
  display: none !important;
}
body.scene-manager-active #left-feature-params {
  display: none !important;
}
body.scene-manager-active #node-tree {
  display: none !important;
}

.scene-manager-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px 0 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.scene-manager-btn {
  flex: 1;
  padding: 5px 8px;
  font-size: 11px;
  font-weight: 500;
  color: #d4d4d4;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s;
}
.scene-manager-btn:hover {
  background: rgba(255, 255, 255, 0.12);
}
.scene-manager-btn.accent {
  background: rgba(0, 122, 204, 0.25);
  border-color: rgba(0, 122, 204, 0.5);
  color: #87CEEB;
}
.scene-manager-btn.accent:hover {
  background: rgba(0, 122, 204, 0.4);
}
.scene-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}
.scene-list .hint {
  padding: 12px;
  color: #858585;
  font-size: 11px;
  text-align: center;
}
.scene-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  cursor: pointer;
  transition: background 0.1s;
  border-left: 3px solid transparent;
}
.scene-item:hover {
  background: rgba(255, 255, 255, 0.05);
}
.scene-item.active {
  background: rgba(255, 255, 255, 0.08);
  border-left-color: #007acc;
}
.scene-item-name {
  flex: 1;
  font-size: 12px;
  color: #d4d4d4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.scene-item-name[contenteditable="true"] {
  outline: none;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  padding: 0 4px;
  cursor: text;
}
.scene-item-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.12s;
}
.scene-item:hover .scene-item-actions {
  opacity: 1;
}
.scene-item-btn {
  background: none;
  border: none;
  color: #858585;
  cursor: pointer;
  font-size: 13px;
  padding: 2px 4px;
  border-radius: 3px;
  line-height: 1;
}
.scene-item-btn:hover {
  color: #d4d4d4;
  background: rgba(255, 255, 255, 0.10);
}
.scene-item-btn.delete:hover {
  color: #f48771;
  background: rgba(244, 135, 113, 0.12);
}
@media (prefers-reduced-motion: reduce) {
}

/* In Sketch workspace, hide Part-only tools */
body.workspace-sketch .part-mode-only {
  display: none;
}

/* ── Plane Selection Tooltip ── */
.plane-select-tooltip {
  position: fixed;
  z-index: 1000;
  background: rgba(40, 40, 40, 0.95);
  color: #87CEEB;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 4px;
  border: 1px solid rgba(135, 206, 235, 0.3);
  pointer-events: none;
  white-space: nowrap;
  animation: tooltip-fade 4s ease-in-out;
}

@keyframes tooltip-fade {
  0% { opacity: 0; transform: translateY(-4px); }
  10% { opacity: 1; transform: translateY(0); }
  80% { opacity: 1; }
  100% { opacity: 0; }
}

/* --- Recording button pulse (defined in recording-bar section above) --- */
@keyframes record-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* =========================================================================
   File Drag-and-Drop overlay
   ========================================================================= */
.file-drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  animation: drop-fade-in 0.15s ease-out;
}

.file-drop-overlay.hidden {
  display: none;
}

@keyframes drop-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.file-drop-box {
  border: 2px dashed var(--accent);
  border-radius: 12px;
  padding: 40px 60px;
  text-align: center;
  color: var(--text-primary);
  background: var(--bg-panel);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  pointer-events: none;
}

.file-drop-box .drop-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.file-drop-box .drop-label {
  font-size: 16px;
  font-weight: 600;
}

.file-drop-box .drop-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* DXF import plane selection panel */
.dxf-import-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 350;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 10px 24px rgba(0,0,0,0.5);
  padding: 16px;
  color: var(--text-primary);
  min-width: 320px;
}

.dxf-import-panel .dxf-import-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
}

.dxf-import-panel .dxf-import-info {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.dxf-import-panel .dxf-import-section {
  margin-bottom: 10px;
}

.dxf-import-panel .dxf-import-section label {
  font-size: 11px;
  font-weight: 500;
  display: block;
  margin-bottom: 4px;
  color: var(--text-secondary);
}

.dxf-import-panel .dxf-import-section select,
.dxf-import-panel .dxf-import-section input {
  width: 100%;
  background: var(--bg-dark);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 5px 8px;
  font-size: 12px;
  outline: none;
}

.dxf-import-panel .dxf-import-section select:focus,
.dxf-import-panel .dxf-import-section input:focus {
  border-color: var(--accent);
}

.dxf-import-panel .dxf-import-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}

.dxf-import-panel .dxf-import-actions button {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 5px 12px;
  cursor: pointer;
  font-size: 12px;
}

.dxf-import-panel .dxf-import-actions button:hover {
  background: rgba(255,255,255,0.08);
}

.dxf-import-panel .dxf-import-actions button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.dxf-import-panel .dxf-import-actions button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* ---- Pattern Tool Panels ---- */
.pattern-tool-panel {
  padding: 8px 10px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(0,122,204,0.06);
}

.pattern-tool-panel h3 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  margin-bottom: 8px;
}

.pattern-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 5px;
  font-size: 12px;
}

.pattern-field label {
  color: var(--text-secondary);
  flex-shrink: 0;
  margin-right: 8px;
}

.pattern-value {
  color: var(--text-secondary);
  font-style: italic;
  text-align: right;
}

.pattern-value.pattern-ok {
  color: rgba(0,230,118,0.9);
  font-style: normal;
}

.pattern-input {
  width: 70px;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg-dark);
  color: var(--text-primary);
  font-size: 12px;
  text-align: right;
}

.pattern-input:focus {
  outline: none;
  border-color: var(--accent);
}

.pattern-tool-panel hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 6px 0;
}

.pattern-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.pattern-btn {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: transparent;
  color: var(--text-primary);
  font-size: 12px;
  cursor: pointer;
}

.pattern-btn:hover {
  background: rgba(255,255,255,0.06);
}

.pattern-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.pattern-btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.pattern-btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.pattern-btn-primary:disabled {
  opacity: 0.4;
}