/* ===== AI Model Workbench - Obsidian-native Design ===== */

/* --- Utility Classes --- */

body {
  --ai3d-radius: var(--radius-s);
  --ai3d-spacing: var(--size-4-3);
}

.is-hidden {
  display: none;
}

.ai3d-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.ai3d-canvas-full {
  width: 100%;
  height: 100%;
  display: block;
}

.ai3d-settings-diagnostics {
  margin-top: 0.5rem;
}

.ai3d-settings-status-block {
  margin-bottom: 0.9rem;
}

.ai3d-annot-btn {
  position: relative;
}

.ai3d-inline-btn.ai3d-btn-active {
  color: var(--text-on-accent);
  background: var(--interactive-accent);
}

.ai3d-inline-btn.ai3d-btn-active:hover {
  filter: brightness(1.1);
}

.ai3d-res-btn {
  font-size: 10px;
  font-weight: 600;
  min-width: 32px;
}

/* --- Preview Host --- */

.ai3d-preview-host {
  min-height: var(--min-height, clamp(200px, 30vh, 400px));
  max-width: var(--max-width, none);
  border-radius: var(--ai3d-radius) var(--ai3d-radius) 0 0;
  border: 1px solid var(--background-modifier-border);
  overflow: hidden;
  background: var(--background-secondary);
  position: relative;
}

.ai3d-preview-host canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.ai3d-zoom-control {
  --ai3d-zoom-percent: 0%;
  position: absolute;
  top: 50%;
  right: 10px;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 168px;
  transform: translateY(-50%);
  border-radius: 999px;
  background: color-mix(in srgb, var(--background-primary) 46%, transparent);
  opacity: 0.72;
  transition: opacity 0.15s ease, background 0.15s ease;
  pointer-events: auto;
  cursor: ns-resize;
  touch-action: none;
  user-select: none;
}

.ai3d-zoom-control:hover,
.ai3d-zoom-control:focus-within,
.ai3d-zoom-control.is-dragging {
  opacity: 1;
  background: color-mix(in srgb, var(--background-primary) 68%, transparent);
}

.ai3d-zoom-control.is-hidden {
  display: none;
}

.ai3d-zoom-track {
  position: relative;
  width: 4px;
  height: 132px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--background-modifier-border) 78%, transparent);
  overflow: visible;
  pointer-events: none;
}

.ai3d-zoom-fill {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: var(--ai3d-zoom-percent);
  border-radius: inherit;
  background: var(--interactive-accent);
}

.ai3d-zoom-track::after {
  content: "";
  position: absolute;
  top: calc(100% - var(--ai3d-zoom-percent));
  left: 50%;
  width: 12px;
  height: 12px;
  transform: translate(-50%, -50%);
  border: 2px solid var(--background-primary);
  border-radius: 50%;
  background: var(--interactive-accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.32);
}

.ai3d-zoom-range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: ns-resize;
  opacity: 0;
  pointer-events: none;
  writing-mode: vertical-lr;
  direction: rtl;
}

@media (max-width: 600px) {
  .ai3d-zoom-control {
    right: 6px;
    width: 24px;
    height: 126px;
  }

  .ai3d-zoom-track {
    height: 96px;
  }
}

.ai3d-preview-host canvas.ai3d-disassembly-active,
.ai3d-grid-host canvas.ai3d-disassembly-active,
.ai3d-embed-preview canvas.ai3d-disassembly-active {
  cursor: grab;
  touch-action: none;
}

.ai3d-preview-host canvas.ai3d-disassembly-dragging,
.ai3d-grid-host canvas.ai3d-disassembly-dragging,
.ai3d-embed-preview canvas.ai3d-disassembly-dragging {
  cursor: grabbing;
}

.ai3d-preview-host canvas.ai3d-measurement-active,
.ai3d-grid-host canvas.ai3d-measurement-active,
.ai3d-embed-preview canvas.ai3d-measurement-active {
  cursor: crosshair;
}

.ai3d-preview-host canvas.ai3d-measurement-focus-aggregation,
.ai3d-grid-host canvas.ai3d-measurement-focus-aggregation,
.ai3d-embed-preview canvas.ai3d-measurement-focus-aggregation {
  animation: ai3d-measurement-focus-aggregation 1100ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes ai3d-measurement-focus-aggregation {
  0% {
    box-shadow:
      inset 0 0 0 0 rgba(96, 165, 250, 0),
      0 0 0 0 rgba(37, 99, 235, 0);
    filter: saturate(1) brightness(1);
  }
  34% {
    box-shadow:
      inset 0 0 0 2px rgba(125, 211, 252, 0.9),
      0 0 0 3px rgba(59, 130, 246, 0.44),
      0 0 28px rgba(37, 99, 235, 0.48);
    filter: saturate(1.15) brightness(1.04);
  }
  68% {
    box-shadow:
      inset 0 0 0 1px rgba(147, 197, 253, 0.5),
      0 0 0 10px rgba(59, 130, 246, 0.16),
      0 0 40px rgba(29, 78, 216, 0.28);
    filter: saturate(1.08) brightness(1.02);
  }
  100% {
    box-shadow:
      inset 0 0 0 0 rgba(96, 165, 250, 0),
      0 0 0 16px rgba(37, 99, 235, 0);
    filter: saturate(1) brightness(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ai3d-preview-host canvas.ai3d-measurement-focus-aggregation,
  .ai3d-grid-host canvas.ai3d-measurement-focus-aggregation,
  .ai3d-embed-preview canvas.ai3d-measurement-focus-aggregation {
    animation: none;
    box-shadow:
      inset 0 0 0 2px rgba(125, 211, 252, 0.75),
      0 0 24px rgba(37, 99, 235, 0.32);
  }
}

.ai3d-preview-host.is-mobile-scroll-mode canvas,
.ai3d-grid-host.is-mobile-scroll-mode canvas,
.ai3d-embed-preview.is-mobile-scroll-mode .ai3d-embed-canvas {
  pointer-events: none;
}

.ai3d-preview-host.is-mobile-scroll-mode .ai3d-annotation-pin,
.ai3d-grid-host.is-mobile-scroll-mode .ai3d-annotation-pin,
.ai3d-embed-preview.is-mobile-scroll-mode .ai3d-annotation-pin {
  pointer-events: none;
}

.ai3d-preview-host.is-mobile-interactive,
.ai3d-grid-host.is-mobile-interactive,
.ai3d-embed-preview.is-mobile-interactive {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--interactive-accent) 45%, transparent);
}

.ai3d-preview-host.is-mobile-interactive canvas,
.ai3d-grid-host.is-mobile-interactive canvas,
.ai3d-embed-preview.is-mobile-interactive .ai3d-embed-canvas {
  pointer-events: auto;
  touch-action: none;
}

/* --- Empty / Loading States --- */

.ai3d-inline-empty {
  padding: var(--ai3d-spacing);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-ui-small);
  line-height: 1.5;
}

.ai3d-direct-load-gate {
  display: flex;
  min-height: min(420px, 70vh);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--background-primary);
}

.ai3d-direct-load-gate-title {
  color: var(--text-normal);
  font-size: var(--font-ui-medium);
  font-weight: 600;
}

.ai3d-direct-load-gate-message {
  max-width: 420px;
  color: var(--text-muted);
}

.ai3d-direct-load-gate-meta {
  display: flex;
  max-width: min(520px, 90%);
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  color: var(--text-faint);
  font-size: var(--font-ui-smaller);
}

.ai3d-direct-load-gate-meta span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai3d-direct-load-gate-meta span + span::before {
  content: "/";
  margin-right: 6px;
  color: var(--background-modifier-border);
}

.ai3d-direct-load-gate-button {
  min-height: 30px;
  margin-top: 4px;
  padding: 4px 12px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--interactive-normal);
  color: var(--text-normal);
  font-size: var(--font-ui-small);
  font-weight: 600;
  cursor: pointer;
}

.ai3d-direct-load-gate-button:hover {
  background: var(--interactive-hover);
}

.ai3d-load-feedback-shell {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 28px);
}

.ai3d-load-feedback-shell.is-mobile {
  padding: 14px;
}

.ai3d-load-feedback {
  display: flex;
  flex-direction: column;
  gap: var(--size-4-1);
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 420px;
  width: min(100%, 420px);
  margin: 0 auto;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.ai3d-load-feedback-shell.is-mobile .ai3d-load-feedback {
  max-width: 300px;
  gap: 6px;
}

.ai3d-load-feedback.is-warning {
  color: var(--text-warning);
}

.ai3d-load-feedback.is-error {
  color: var(--text-error);
}

.ai3d-load-feedback-title {
  font-size: var(--font-ui-medium);
  font-weight: 600;
  color: var(--text-normal);
}

.ai3d-load-feedback-shell.is-mobile .ai3d-load-feedback-title {
  font-size: var(--font-ui-small);
}

.ai3d-load-feedback-message {
  color: var(--text-muted);
  line-height: 1.55;
}

.ai3d-load-feedback-hint {
  color: var(--text-faint);
  line-height: 1.5;
}

.ai3d-mobile-mode-hint {
  font-size: var(--font-ui-smaller);
  color: var(--text-faint);
  line-height: 1.45;
}

.ai3d-mobile-mode-hint--inline {
  padding: 6px 4px 0;
}

/* --- CM6 Widget: re-enable pointer events blocked by CodeMirror --- */

.ai3d-cm-widget,
.ai3d-inline-wrapper {
  pointer-events: auto;
}

.ai3d-inline-toolbar,
.ai3d-inline-toolbar button,
.ai3d-inline-toolbar input,
.ai3d-helper-toolbar,
.ai3d-helper-toolbar button {
  pointer-events: auto;
}

/* --- Inline Controls Toolbar --- */

.ai3d-inline-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--background-secondary);
  border: 1px solid var(--background-modifier-border);
  border-radius: 8px 8px 0 0;
  flex-wrap: wrap;
  font-size: 12px;
}

.ai3d-inline-label {
  color: var(--text-muted);
  white-space: nowrap;
  font-size: 11px;
}

.ai3d-inline-value {
  color: var(--text-normal);
  font-weight: 600;
  min-width: 30px;
  text-align: right;
  font-size: 11px;
}

.ai3d-inline-slider {
  flex: 1;
  min-width: 60px;
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--background-modifier-border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.ai3d-inline-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--interactive-accent);
  cursor: pointer;
}

.ai3d-inline-axis-btn,
.ai3d-inline-reset-btn {
  padding: 2px 8px;
  border-radius: var(--radius-s);
  border: 1px solid var(--background-modifier-border);
  background: var(--background-primary);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.ai3d-inline-axis-btn:hover,
.ai3d-inline-reset-btn:hover {
  border-color: var(--text-muted);
  color: var(--text-normal);
}

.ai3d-inline-axis-btn.is-active {
  background: var(--interactive-accent);
  color: var(--text-on-accent);
  border-color: transparent;
}

/* --- Inline Helper Toolbar (outside preview) --- */

.ai3d-helper-toolbar {
  container-type: inline-size;
  position: relative;
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px 2px;
  margin-top: -1px;
  border: 1px solid var(--background-modifier-border);
  border-top: none;
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  background: var(--background-secondary);
}

.ai3d-helper-toolbar.is-mobile {
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 4px;
}

.ai3d-helper-group {
  display: flex;
  align-items: center;
  gap: 2px;
}

.ai3d-helper-group + .ai3d-helper-group {
  margin-left: 4px;
  padding-left: 4px;
  border-left: 1px solid var(--background-modifier-border);
}

.ai3d-helper-group-inspect {
  min-width: 0;
}

.ai3d-measurement-strip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 1 auto;
  min-width: 0;
  max-width: 190px;
  min-height: 28px;
  padding: 0 5px;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font: inherit;
  line-height: 1;
  white-space: nowrap;
  border: none;
  border-radius: var(--radius-s);
  background: transparent;
  cursor: pointer;
}

.ai3d-measurement-strip:hover,
.ai3d-measurement-strip.is-expanded {
  background: var(--background-modifier-hover);
}

.ai3d-measurement-strip.is-active,
.ai3d-measurement-strip.is-expanded {
  color: var(--text-normal);
}

.ai3d-measurement-strip.is-pending {
  color: var(--text-accent);
}

.ai3d-measurement-strip.is-targeting {
  color: var(--text-warning);
}

.ai3d-measurement-strip.is-reviewing {
  color: var(--text-normal);
}

.ai3d-measurement-strip-value {
  min-width: 0;
  overflow: hidden;
  color: inherit;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai3d-measurement-strip-meta {
  flex: 0 0 auto;
  color: var(--text-faint);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.ai3d-measurement-strip-meta::before {
  content: "/";
  margin-right: 6px;
  color: var(--background-modifier-border);
}

.ai3d-helper-toolbar.is-mobile .ai3d-helper-group {
  gap: 4px;
}

.ai3d-helper-toolbar.is-mobile .ai3d-measurement-strip {
  flex: 1 1 auto;
  max-width: none;
  padding-left: 6px;
}

.ai3d-helper-toolbar.is-mobile .ai3d-helper-group + .ai3d-helper-group {
  margin-left: 0;
  padding-left: 0;
  border-left: none;
}

.ai3d-helper-toolbar .ai3d-inline-btn.is-secondary {
  display: none;
}

.ai3d-helper-toolbar.show-secondary .ai3d-inline-btn.is-secondary {
  display: flex;
}

.ai3d-slice-details {
  flex: 1 0 100%;
  min-width: 0;
  padding: 6px 2px 1px;
  margin-top: 2px;
  background: transparent;
  border-top: 1px solid var(--background-modifier-border);
  color: var(--text-normal);
  font-size: var(--font-ui-smaller);
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.ai3d-slice-details.is-hidden {
  display: none;
}

.ai3d-interaction-status {
  flex: 0 0 auto;
  min-height: 22px;
  padding: 3px 8px;
  border: 1px solid color-mix(in srgb, var(--interactive-accent) 42%, var(--background-modifier-border));
  border-radius: 999px;
  background: color-mix(in srgb, var(--interactive-accent) 12%, var(--background-secondary));
  color: var(--text-normal);
  font-size: var(--font-ui-smaller);
  font-weight: 650;
  line-height: 1.3;
  white-space: nowrap;
}

.ai3d-interaction-status.is-hidden {
  display: none;
}

.ai3d-helper-toolbar .ai3d-inline-btn.ai3d-linked-inactive {
  opacity: 0.48;
}

.ai3d-helper-toolbar .ai3d-inline-btn.ai3d-linked-inactive:hover {
  opacity: 1;
}

.ai3d-preview-host.ai3d-interaction-active {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--interactive-accent) 52%, transparent);
}

.ai3d-preview-host.ai3d-interaction-measurement {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #f59e0b 68%, transparent);
}

.ai3d-preview-host.ai3d-interaction-slice {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #38bdf8 72%, transparent);
}

.ai3d-preview-host.ai3d-interaction-disassembly {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #22c55e 62%, transparent);
}

.ai3d-slice-header,
.ai3d-slice-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.ai3d-slice-title,
.ai3d-slice-label {
  flex: 0 0 72px;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 650;
}

.ai3d-slice-summary,
.ai3d-slice-value {
  color: var(--text-faint);
  font-size: var(--font-ui-smaller);
  font-variant-numeric: tabular-nums;
}

.ai3d-slice-header {
  justify-content: space-between;
}

.ai3d-slice-summary {
  flex: 1 1 auto;
  min-width: 120px;
}

.ai3d-slice-reset-btn {
  min-height: 24px;
  border: 1px solid var(--background-modifier-border);
  background: transparent;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 700;
}

.ai3d-slice-reset-btn {
  width: 26px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ai3d-slice-reset-btn:hover {
  background: var(--background-modifier-hover);
  color: var(--text-normal);
}

.ai3d-slice-reset-btn svg {
  width: 14px;
  height: 14px;
  display: block;
}

.ai3d-slice-reset-btn svg * {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ai3d-slice-status-row {
  align-items: baseline;
}

.ai3d-slice-status-row .ai3d-slice-label {
  flex-basis: 58px;
}

.ai3d-slice-number-control,
.ai3d-slice-axis-control {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
}

.ai3d-slice-number-control {
  flex: 0 1 180px;
}

.ai3d-slice-number-input {
  width: 86px;
  min-width: 0;
  height: 26px;
  padding: 2px 6px;
  border: 1px solid var(--background-modifier-border);
  border-radius: 3px;
  background: var(--background-primary-alt);
  color: var(--text-normal);
  font-size: var(--font-ui-smaller);
  font-variant-numeric: tabular-nums;
}

.ai3d-slice-number-input:focus {
  border-color: var(--interactive-accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--interactive-accent) 45%, transparent);
}

.ai3d-slice-number-unit {
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
}

.ai3d-slice-rotation-row {
  align-items: flex-end;
}

.ai3d-slice-axis-control {
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
}

.ai3d-slice-axis-label {
  text-align: center;
  font-size: var(--font-ui-smaller);
  font-weight: 700;
}

.ai3d-slice-axis-control .ai3d-slice-number-unit {
  display: none;
}

.ai3d-slice-axis-x .ai3d-slice-axis-label {
  color: #ef4444;
}

.ai3d-slice-axis-y .ai3d-slice-axis-label {
  color: #22c55e;
}

.ai3d-slice-axis-z .ai3d-slice-axis-label {
  color: #3b82f6;
}

.ai3d-slice-mode-row {
  align-items: center;
}

.ai3d-slice-mode-row.is-hidden {
  display: none;
}

.ai3d-slice-mode-buttons {
  flex: 1 1 200px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px;
}

.ai3d-slice-mode-btn {
  min-height: 28px;
  padding: 3px 8px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--button-radius);
  background: var(--background-secondary);
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 650;
}

.ai3d-slice-mode-btn:hover {
  background: var(--background-modifier-hover);
  color: var(--text-normal);
}

.ai3d-slice-mode-btn.ai3d-btn-active {
  border-color: color-mix(in srgb, var(--interactive-accent) 68%, var(--background-modifier-border));
  background: color-mix(in srgb, var(--interactive-accent) 18%, var(--background-secondary));
  color: var(--text-normal);
}

.ai3d-helper-toolbar:not(.show-secondary) .ai3d-helper-group-inspect:not(.has-primary-visible) {
  display: none;
}

.ai3d-helper-toolbar .ai3d-mobile-more-toggle {
  display: flex;
  margin-left: auto;
}

.ai3d-inline-btn {
  position: relative;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
  padding: 0;
}

.ai3d-slice-btn {
  width: auto;
  min-width: 66px;
  gap: 5px;
  padding: 0 8px;
  border: 1px solid color-mix(in srgb, var(--interactive-accent) 34%, var(--background-modifier-border));
  color: var(--text-normal);
  background: color-mix(in srgb, var(--interactive-accent) 10%, transparent);
  font-size: var(--font-ui-smaller);
  font-weight: 650;
}

.ai3d-slice-btn:hover {
  background: color-mix(in srgb, var(--interactive-accent) 18%, var(--background-modifier-hover));
}

.ai3d-slice-active {
  cursor: default;
  touch-action: none;
}

.ai3d-slice-active.ai3d-slice-rotate {
  cursor: default;
}

.ai3d-slice-dragging {
  cursor: grabbing;
  touch-action: none;
}

.ai3d-slice-btn-text {
  line-height: 1;
  white-space: nowrap;
}

.ai3d-helper-toolbar.is-mobile .ai3d-inline-btn {
  width: 36px;
  height: 36px;
}

.ai3d-helper-toolbar.is-mobile .ai3d-slice-btn {
  width: auto;
  min-width: 72px;
}

.ai3d-helper-toolbar.is-mobile .ai3d-mobile-mode-btn {
  width: auto;
  min-width: 56px;
  min-height: 34px;
  padding: 4px 10px;
  gap: 6px;
  justify-content: center;
  border: 1px solid var(--background-modifier-border);
  border-radius: 999px;
  background: var(--background-primary);
  font-size: var(--font-ui-smaller);
  font-weight: 600;
}

.ai3d-helper-toolbar.is-mobile .ai3d-mobile-mode-btn-label {
  line-height: 1;
}

.ai3d-helper-toolbar.is-mobile .ai3d-mobile-more-toggle {
  display: flex;
  margin-left: auto;
}

@container (max-width: 420px) {
  .ai3d-helper-toolbar-adaptive {
    justify-content: flex-start;
    gap: 6px;
    padding: 6px 4px;
  }

  .ai3d-helper-toolbar-adaptive .ai3d-helper-group {
    gap: 4px;
  }

  .ai3d-helper-toolbar-adaptive .ai3d-measurement-strip {
    flex: 1 1 auto;
    max-width: 150px;
  }

  .ai3d-helper-toolbar-adaptive .ai3d-helper-group + .ai3d-helper-group {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
  }

  .ai3d-helper-toolbar-adaptive .ai3d-inline-btn.is-secondary {
    display: none;
  }

  .ai3d-helper-toolbar-adaptive.show-secondary .ai3d-inline-btn.is-secondary {
    display: flex;
  }

  .ai3d-helper-toolbar-adaptive:not(.show-secondary) .ai3d-helper-group-inspect:not(.has-primary-visible) {
    display: none;
  }

  .ai3d-helper-toolbar-adaptive .ai3d-mobile-more-toggle {
    display: flex;
    margin-left: auto;
  }
}

.ai3d-inline-btn:hover {
  color: var(--text-normal);
  background: var(--background-modifier-hover);
}

/* SVG icons inside plugin buttons 鈥?shared sizing and stroke styling. */
.ai3d-inline-btn svg,
.ai3d-annot-action-btn svg {
  width: 14px;
  height: 14px;
  display: block;
}

.ai3d-inline-btn svg *,
.ai3d-annot-action-btn svg * {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Grid Host (3dgrid) --- */

.ai3d-grid-host {
  height: var(--grid-height, clamp(280px, 42vh, 460px));
  min-height: 250px;
  border-radius: var(--ai3d-radius) var(--ai3d-radius) 0 0;
  border: 1px solid var(--background-modifier-border);
  overflow: hidden;
  background: var(--background-secondary);
  position: relative;
  max-height: clamp(250px, 40vh, 450px);
}

.ai3d-grid-host canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* --- JSON Config Error --- */

.ai3d-json-error {
  padding: var(--ai3d-spacing);
  border-radius: var(--radius-s);
  background: var(--background-modifier-error);
  border: 1px solid var(--color-red);
  color: var(--text-normal);
  font-size: var(--font-ui-small);
}

.ai3d-json-error pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-monospace);
  font-size: var(--font-ui-smaller);
  color: var(--text-muted);
}

/* --- Tooltip --- */

.ai3d-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 8px;
  border-radius: var(--radius-s);
  background: var(--background-primary);
  color: var(--text-normal);
  font-size: 11px;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  animation: ai3d-fade-in-centered 0.15s ease;
}

@keyframes ai3d-fade-in-centered {
  from { opacity: 0; transform: translateX(-50%) translateY(4px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* --- Direct File View --- */
.workspace-leaf-content[data-type="ai3d-direct-view"] {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.ai3d-direct-view-leaf {
  min-height: 0;
}

.workspace .workspace-leaf.ai3d-direct-view-leaf > .workspace-leaf-content:not(.ai3d-direct-view-leaf-content) {
  display: none;
}

.ai3d-direct-view-leaf > .workspace-leaf-content.ai3d-direct-view-leaf-content {
  flex: 1 1 0;
}

.ai3d-direct-view-leaf-content,
.workspace-leaf-content.ai3d-direct-view-leaf-content {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  height: auto;
  min-height: 0;
  overflow: hidden;
}

.ai3d-direct-view-leaf-content > .view-content.ai3d-direct-view,
.workspace-leaf-content[data-type="ai3d-direct-view"] > .view-content.ai3d-direct-view {
  flex: 1 1 auto;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  padding: 0;
}

.ai3d-direct-view {
  flex: 1 1 auto;
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}
.ai3d-workspace {
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  flex: 1 1 auto;
  width: 100%;
  height: 100%;
  min-height: 0;
  position: relative;
}
.ai3d-workspace-track-top {
  display: grid;
  grid-template-columns: 1fr 4px 200px;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}
.ai3d-workspace-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}
.ai3d-workspace-main .ai3d-preview-host {
  flex: 1;
  min-height: 0;
}
.ai3d-workspace-main .ai3d-helper-toolbar {
  flex-shrink: 0;
}
.ai3d-workspace-sidebar {
  display: flex;
  flex-direction: column;
  background: var(--background-secondary);
  border-left: 1px solid var(--background-modifier-border);
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 0;
}
.ai3d-sidebar-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px;
  min-height: 0;
  overflow-y: auto;
}
.ai3d-sidebar-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}
.ai3d-sidebar-content .ai3d-direct-workbench-control {
  min-width: 0;
  padding: 6px 8px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-primary);
}
.ai3d-sidebar-content .ai3d-direct-workbench-control-head,
.ai3d-sidebar-content .ai3d-direct-workbench-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.ai3d-sidebar-content .ai3d-direct-workbench-control-head {
  justify-content: space-between;
}
.ai3d-sidebar-content .ai3d-direct-workbench-action {
  padding: 5px 10px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-primary);
  color: var(--text-normal);
  font-size: var(--font-ui-smaller);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.ai3d-sidebar-content .ai3d-direct-workbench-action:hover {
  background: var(--background-modifier-hover);
  border-color: var(--interactive-accent);
}
.ai3d-sidebar-content .ai3d-direct-workbench-action:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.ai3d-sidebar-content .ai3d-direct-workbench-empty {
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  padding: 8px 0;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  align-items: center;
  padding: 6px 8px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-primary);
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-main,
.ai3d-sidebar-content .ai3d-direct-workbench-match-side {
  min-width: 0;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-side {
  display: flex;
  gap: 6px;
  align-items: center;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-title,
.ai3d-sidebar-content .ai3d-direct-workbench-match-source,
.ai3d-sidebar-content .ai3d-direct-workbench-match-model,
.ai3d-sidebar-content .ai3d-direct-workbench-match-target,
.ai3d-sidebar-content .ai3d-direct-workbench-match-reasons {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-title {
  color: var(--text-normal);
  font-weight: 600;
  font-size: 12px;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-source {
  color: var(--text-muted);
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-model {
  color: var(--text-faint);
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-target {
  color: var(--text-muted);
  font-size: 11px;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-reasons {
  color: var(--text-faint);
  font-size: 10px;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-score {
  color: var(--text-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.ai3d-sidebar-content .ai3d-direct-workbench-match-open {
  min-width: 44px;
}
.ai3d-resize-handle {
  background: var(--background-modifier-border);
  user-select: none;
  position: relative;
  z-index: 1;
  transition: background 0.15s;
}
.ai3d-resize-handle:hover {
  background: var(--interactive-accent);
}
.ai3d-resize-handle-h {
  cursor: col-resize;
}
.ai3d-resize-handle-v {
  display: none;
}
.ai3d-direct-view .ai3d-preview-host {
  flex: 1;
  min-height: 0;
}

.ai3d-direct-workbench-panel {
  position: absolute;
  left: 10px;
  bottom: 10px;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: min(760px, calc(100% - 236px));
  max-height: min(34%, 220px);
  overflow: hidden;
  gap: 8px;
  align-items: start;
  padding: 8px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: color-mix(in srgb, var(--background-secondary) 92%, transparent);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
  font-size: var(--font-ui-smaller);
}

.ai3d-direct-workbench-panel.is-hidden {
  display: none;
}

.ai3d-sidebar-content > .ai3d-direct-workbench-panel {
  position: static;
  left: auto;
  bottom: auto;
  z-index: auto;
  width: 100%;
  max-height: none;
  overflow: visible;
  box-shadow: none;
  background: var(--background-primary);
}

.ai3d-sidebar-content > .ai3d-direct-workbench-panel .ai3d-direct-workbench-overview {
  grid-template-columns: 1fr;
}

.ai3d-sidebar-content > .ai3d-direct-workbench-panel .ai3d-direct-workbench-metrics {
  flex-direction: column;
  gap: 6px;
}

.ai3d-sidebar-content > .ai3d-direct-workbench-panel .ai3d-direct-workbench-metric {
  flex: 0 0 auto;
}

.ai3d-direct-workbench-overview,
.ai3d-direct-workbench-status,
.ai3d-direct-workbench-metrics,
.ai3d-direct-workbench-controls {
  min-width: 0;
  display: flex;
  gap: 8px;
}

.ai3d-direct-workbench-overview,
.ai3d-direct-workbench-status,
.ai3d-direct-workbench-controls {
  flex-direction: column;
}

.ai3d-direct-workbench-overview {
  display: grid;
  grid-template-columns: minmax(180px, 0.72fr) minmax(0, 1.28fr);
  gap: 8px;
}

.ai3d-direct-workbench-metrics {
  flex-wrap: wrap;
  align-content: flex-start;
}

.ai3d-direct-workbench-line,
.ai3d-direct-workbench-metric,
.ai3d-direct-workbench-control {
  min-width: 0;
  padding: 5px 7px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-primary);
}

.ai3d-direct-workbench-line,
.ai3d-direct-workbench-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ai3d-direct-workbench-metric {
  flex: 1 1 84px;
}

.ai3d-direct-workbench-route {
  flex: 1;
}

.ai3d-direct-workbench-label {
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.25;
}

.ai3d-direct-workbench-value {
  min-width: 0;
  color: var(--text-normal);
  font-weight: 600;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai3d-direct-workbench-control {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ai3d-direct-workbench-control-head,
.ai3d-direct-workbench-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai3d-direct-workbench-control-head {
  justify-content: space-between;
}

.ai3d-direct-workbench-action {
  min-height: 26px;
  padding: 2px 8px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-primary);
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  cursor: pointer;
}

.ai3d-direct-workbench-action:hover {
  color: var(--text-normal);
  border-color: var(--interactive-accent);
}

.ai3d-direct-workbench-action:disabled {
  cursor: default;
  opacity: 0.55;
}

.ai3d-direct-workbench-knowledge {
  gap: 4px;
}

.ai3d-direct-workbench-registered {
  gap: 6px;
}

.ai3d-direct-workbench-registered-body {
  min-width: 0;
}

.ai3d-direct-workbench-empty {
  color: var(--text-muted);
  line-height: 1.35;
}

.ai3d-direct-workbench-match-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ai3d-direct-workbench-match {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-width: 0;
  padding: 6px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-secondary);
}

.ai3d-direct-workbench-match-main,
.ai3d-direct-workbench-match-side {
  min-width: 0;
}

.ai3d-direct-workbench-match-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ai3d-direct-workbench-match-side {
  display: flex;
  align-items: center;
  gap: 6px;
}

.ai3d-direct-workbench-match-title,
.ai3d-direct-workbench-match-source,
.ai3d-direct-workbench-match-model,
.ai3d-direct-workbench-match-target,
.ai3d-direct-workbench-match-reasons {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai3d-direct-workbench-match-title {
  color: var(--text-normal);
  font-weight: 600;
}

.ai3d-direct-workbench-match-source {
  color: var(--text-muted);
}

.ai3d-direct-workbench-match-model {
  color: var(--text-faint);
}

.ai3d-direct-workbench-match-target {
  color: var(--text-faint);
  font-size: var(--font-ui-smaller);
}

.ai3d-direct-workbench-match-reasons {
  color: var(--text-faint);
}

.ai3d-direct-workbench-match-score {
  min-width: 34px;
  color: var(--text-accent);
  font-weight: 700;
  text-align: right;
}

.ai3d-direct-workbench-match-open {
  min-width: 44px;
}

@media (max-width: 760px) {
  .ai3d-workspace-track-top {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) 4px auto;
  }
  .ai3d-resize-handle-h {
    cursor: row-resize;
  }
  .ai3d-workspace-sidebar {
    flex-direction: row;
    border-left: none;
    border-top: 1px solid var(--background-modifier-border);
    overflow-x: auto;
    overflow-y: hidden;
  }
  .ai3d-sidebar-content {
    flex-direction: row;
    gap: 8px;
    padding: 4px;
    min-width: min-content;
  }
  .ai3d-direct-workbench-panel {
    left: 8px;
    right: 8px;
    bottom: 8px;
    width: auto;
    max-height: 28%;
    grid-template-columns: 1fr;
  }
  .ai3d-direct-workbench-overview {
    grid-template-columns: 1fr;
  }
  .ai3d-direct-workbench-controls {
    gap: 8px;
  }
  .ai3d-direct-workbench-match {
    grid-template-columns: 1fr;
  }
  .ai3d-direct-workbench-match-side {
    justify-content: space-between;
  }
}

/* --- Responsive: Narrow Sidebar --- */

@media (max-width: 400px) {
  .ai3d-preview-host {
    min-height: 240px;
  }

  .ai3d-inline-toolbar {
    padding: 8px;
    gap: 6px;
  }

  .ai3d-inline-axis-btn,
  .ai3d-inline-reset-btn {
    min-height: 30px;
    padding: 4px 10px;
  }

  .ai3d-helper-toolbar {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px 4px;
  }

  .ai3d-inline-btn {
    width: 34px;
    height: 34px;
  }

  .ai3d-inline-btn svg,
  .ai3d-annot-action-btn svg {
    width: 16px;
    height: 16px;
  }

  .ai3d-embed-canvas {
    height: var(--ai3d-embed-height, 220px);
  }
}

/* --- Live Preview Embed --- */

.ai3d-embed-preview {
  position: relative;
  width: 100%;
  border-radius: var(--radius-s);
  overflow: hidden;
  border: 1px solid var(--background-modifier-border);
  background: var(--background-primary);
}

.ai3d-embed-preview.is-mobile {
  border-radius: var(--radius-m);
}

.ai3d-embed-preview-lazy {
  min-height: var(--ai3d-embed-height, 300px);
}

.ai3d-embed-canvas {
  display: block;
  width: 100%;
  height: var(--ai3d-embed-height, 300px);
  touch-action: pan-y pinch-zoom;
}

.ai3d-mobile-mode-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--size-4-2);
  padding: 6px 10px 8px;
  border-top: 1px solid var(--background-modifier-border);
  background: var(--background-secondary);
}

.ai3d-mobile-mode-bar.is-detached {
  margin-top: -1px;
  border: 1px solid var(--background-modifier-border);
  border-top: none;
  border-radius: 0 0 var(--ai3d-radius) var(--ai3d-radius);
}

.ai3d-mobile-mode-btn {
  flex-shrink: 0;
  min-width: 56px;
  min-height: 34px;
  padding: 4px 10px;
  border: 1px solid var(--background-modifier-border);
  border-radius: 999px;
  background: var(--background-primary);
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 600;
}

.ai3d-embed-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-muted);
  font-size: var(--font-ui-small);
}

.ai3d-embed-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-error);
  font-size: var(--font-ui-small);
  text-align: center;
  padding: 8px;
}

/* --- Loading Overlay --- */

.ai3d-loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: color-mix(in srgb, var(--background-primary) 85%, transparent);
  z-index: 10;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.ai3d-loading-overlay > :not(.ai3d-loading-skeleton) {
  position: relative;
  z-index: 1;
}

.ai3d-loading-overlay.is-hiding {
  opacity: 0;
}

.ai3d-loading-skeleton {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--background-secondary) 92%, transparent), color-mix(in srgb, var(--background-primary) 82%, transparent));
  overflow: hidden;
}

.ai3d-loading-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.18) 45%, transparent 100%);
  transform: translateX(-100%);
  animation: ai3d-skeleton-sweep 1.5s ease-in-out infinite;
}

.ai3d-loading-skeleton-canvas {
  flex: 1;
  border-radius: var(--radius-m);
  background: color-mix(in srgb, var(--background-modifier-border) 80%, transparent);
}

.ai3d-loading-skeleton-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai3d-loading-skeleton-line {
  height: 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--background-modifier-border) 75%, transparent);
}

.ai3d-loading-skeleton-line.is-short {
  width: 60%;
}

@keyframes ai3d-skeleton-sweep {
  to { transform: translateX(100%); }
}

.ai3d-loading-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--background-modifier-border);
  border-top-color: var(--interactive-accent);
  border-radius: 50%;
  animation: ai3d-spin 0.8s linear infinite;
}

@keyframes ai3d-spin {
  to { transform: rotate(360deg); }
}

.ai3d-loading-text {
  color: var(--text-muted);
  font-size: var(--font-ui-small);
  text-align: center;
}

.ai3d-loading-bar-track {
  width: 160px;
  height: 3px;
  border-radius: 2px;
  background: var(--background-modifier-border);
  overflow: hidden;
}

.ai3d-loading-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--interactive-accent);
  width: var(--bar-width, 0%);
  transition: width 0.4s ease;
}

.ai3d-loading-bar-fill.is-indeterminate {
  width: 40%;
  animation: ai3d-indeterminate 1.4s ease-in-out infinite;
}

@keyframes ai3d-indeterminate {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ===== Model Performance Feedback ===== */

.ai3d-performance-feedback {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 7px;
  max-width: min(320px, calc(100% - 20px));
  padding: 6px 9px;
  color: #f8fafc;
  background: rgba(10, 15, 22, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.ai3d-performance-feedback.is-subtle {
  opacity: 0.58;
}

.ai3d-performance-feedback-tier {
  flex: 0 0 auto;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  color: #111827;
  background: #fbbf24;
}

.ai3d-performance-feedback.is-extreme .ai3d-performance-feedback-tier {
  color: #ffffff;
  background: #ef4444;
}

.ai3d-performance-feedback-meta {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
  line-height: 1.3;
}

/* ===== Annotation Pins ===== */

.ai3d-annotation-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  overflow: hidden;
}

/* Semi-transparent overlay when annotation mode is active */
.ai3d-annot-mode-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  background: rgba(74, 158, 255, 0.06);
  border: 2px solid rgba(74, 158, 255, 0.3);
  border-radius: inherit;
  pointer-events: none;
  animation: ai3d-annot-pulse 2s ease-in-out infinite;
}

@keyframes ai3d-annot-pulse {
  0%, 100% { border-color: rgba(74, 158, 255, 0.3); }
  50% { border-color: rgba(74, 158, 255, 0.6); }
}

.ai3d-annotation-pin {
  --pin-anchor-x: 13px;
  --pin-anchor-translate: translate(calc(-1 * var(--pin-anchor-x)), calc(-50% + var(--pin-offset-y, 0px)));
  position: absolute;
  left: var(--pin-left, 0);
  top: var(--pin-top, 0);
  transform: var(--pin-anchor-translate);
  transform-origin: var(--pin-anchor-x) 50%;
  display: flex;
  align-items: center;
  gap: 5px;
  pointer-events: auto;
  cursor: default;
  user-select: none;
  padding: 3px 8px 3px 6px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.4));
  transition: opacity 0.25s ease, filter 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  will-change: transform;
}

.ai3d-annotation-pin--dot {
  --pin-anchor-x: 8px;
  width: 18px;
  height: 18px;
  justify-content: center;
  gap: 0;
  padding: 0;
  border-radius: 50%;
}

.ai3d-annotation-pin--dot .ai3d-pin-dot {
  width: 12px;
  height: 12px;
}

.ai3d-annotation-pin--snippet {
  --pin-anchor-x: 13px;
  align-items: flex-start;
  gap: 7px;
  width: min(260px, 46vw);
  padding: 6px 9px 7px 7px;
  border-radius: var(--radius-s);
}

.ai3d-pin-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.ai3d-pin-snippet {
  max-height: 82px;
  overflow: hidden;
  font-size: 10.5px;
  line-height: 1.35;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.74);
  white-space: pre-wrap;
  word-break: break-word;
}

.ai3d-pin-snippet--markdown {
  white-space: normal;
}

.ai3d-pin-snippet--markdown > :first-child,
.ai3d-pin-snippet--markdown > :last-child {
  margin-block-start: 0;
  margin-block-end: 0;
}

.ai3d-pin-snippet--markdown pre {
  max-width: 100%;
  overflow: hidden;
  white-space: pre-wrap;
}

.ai3d-annotation-pin:hover {
  transform: var(--pin-anchor-translate) scale(1.05);
  background: rgba(0, 0, 0, 0.7);
}

/* Occluded pin (behind model geometry) */
.ai3d-annotation-pin.ai3d-pin-occluded {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

/* Fully hidden pin (behind camera or outside the projected viewport) */
.ai3d-annotation-pin.ai3d-pin-hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.ai3d-pin-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--pin-color, #4a9eff);
  border: 2px solid rgba(255, 255, 255, 0.8);
  flex-shrink: 0;
  box-shadow: 0 0 6px currentColor;
}

.ai3d-pin-label {
  font-size: 11px;
  font-weight: 600;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ai3d-pin-delete {
  display: none;
  background: rgba(255, 60, 60, 0.85);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  font-size: 11px;
  line-height: 16px;
  text-align: center;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.ai3d-annotation-pin:hover .ai3d-pin-delete {
  display: block;
}

/* Annotation editor popup */
.ai3d-annotation-editor {
  position: absolute;
  left: var(--editor-left, 0);
  top: var(--editor-top, 0);
  z-index: 20;
  background: var(--background-primary);
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-m);
  padding: 8px;
  min-width: 180px;
  max-width: 240px;
  pointer-events: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ai3d-annotation-editor-input {
  width: 100%;
  font-size: 13px;
  padding: 4px 8px;
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  background: var(--background-secondary);
  color: var(--text-normal);
  outline: none;
  box-sizing: border-box;
}

.ai3d-annotation-editor-input:focus {
  border-color: var(--interactive-accent);
}

.ai3d-annotation-editor-colors {
  display: flex;
  gap: 4px;
}

.ai3d-pin-color-swatch {
  width: 18px;
  height: 18px;
  appearance: none;
  -webkit-appearance: none;
  display: block;
  border-radius: 50%;
  background: var(--swatch-color, #4a9eff);
  background-image: none;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: border-color 0.15s;
  flex-shrink: 0;
}

.ai3d-pin-color-swatch.is-selected {
  background: var(--swatch-color, #4a9eff);
  border-color: var(--text-normal, #ffffff);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--text-normal, #ffffff) 22%, transparent);
  transform: scale(1.08);
}

.ai3d-pin-color-swatch:hover {
  border-color: var(--text-muted, #999999);
}

.ai3d-annotation-editor-actions {
  display: flex;
  gap: 4px;
  justify-content: flex-end;
}

.ai3d-annotation-editor-btn {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-s);
  border: 1px solid var(--background-modifier-border);
  background: var(--background-secondary);
  color: var(--text-normal);
  cursor: pointer;
}

.ai3d-annotation-editor-confirm {
  background: var(--interactive-accent);
  color: var(--text-on-accent);
  border-color: var(--interactive-accent);
}

.ai3d-annotation-editor-delete {
  background: var(--background-secondary);
  color: var(--text-error);
  border-color: var(--text-error);
  margin-right: auto;
}

.ai3d-annotation-editor-delete:hover {
  background: var(--text-error);
  color: var(--text-on-accent);
}

/* Editor input wrapper */
.ai3d-editor-input-wrap {
  position: relative;
  width: 100%;
}

/* Binding tag: shown below input when a heading is selected */
.ai3d-editor-binding-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin-top: 3px;
  padding: 1px 6px;
  font-size: 11px;
  background: var(--background-secondary);
  color: var(--text-muted);
  border-radius: var(--radius-s);
  border: 1px solid var(--background-modifier-border);
  max-width: 100%;
  overflow: hidden;
  white-space: nowrap;
}

.ai3d-editor-binding-text {
  overflow: hidden;
  text-overflow: ellipsis;
}

.ai3d-editor-binding-clear {
  font-size: 10px;
  line-height: 1;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0 2px;
}

.ai3d-editor-binding-clear:hover {
  color: var(--text-error);
}

/* Content preview: shows heading section content */
.ai3d-editor-content-preview {
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-muted);
  background: var(--background-secondary);
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  padding: 6px 8px;
  max-height: 100px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.ai3d-editor-content-preview--markdown {
  white-space: normal;
}

.ai3d-editor-content-preview--markdown > :first-child,
.ai3d-editor-content-preview--markdown > :last-child,
.ai3d-pin-popover-body--markdown > :first-child,
.ai3d-pin-popover-body--markdown > :last-child {
  margin-block-start: 0;
  margin-block-end: 0;
}

.ai3d-editor-content-preview--markdown pre,
.ai3d-pin-popover-body--markdown pre {
  white-space: pre;
  overflow-x: auto;
}

.ai3d-editor-content-preview--markdown code,
.ai3d-pin-popover-body--markdown code {
  word-break: normal;
}

.ai3d-editor-content-preview--empty {
  font-style: italic;
  color: var(--text-faint);
}

/* Heading autocomplete dropdown */
.ai3d-heading-dropdown {
  max-height: 180px;
  overflow-y: auto;
  background: var(--background-primary);
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.ai3d-heading-dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  gap: 6px;
}

.ai3d-heading-dropdown-item:hover,
.ai3d-heading-dropdown-item.active {
  background: var(--background-modifier-hover);
}

.ai3d-heading-dropdown-heading {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-normal);
}

.ai3d-heading-dropdown-note {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-muted);
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Annotations panel section */
.ai3d-annot-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai3d-annot-toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai3d-annot-hint {
  font-size: var(--font-ui-smaller);
  color: var(--text-muted);
}

.ai3d-annot-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ai3d-annot-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border-radius: var(--radius-s);
  transition: background 0.15s ease;
}

.ai3d-annot-item:hover {
  background: var(--background-modifier-hover);
}

.ai3d-annot-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.ai3d-annot-label {
  font-size: var(--font-ui-small);
  color: var(--text-normal);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.ai3d-annot-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s ease;
  flex-shrink: 0;
}

.ai3d-annot-item:hover .ai3d-annot-actions {
  opacity: 1;
}

.ai3d-annot-action-btn {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-s);
  padding: 0;
}

.ai3d-annot-action-btn:hover {
  background: var(--background-modifier-hover);
  color: var(--text-normal);
}

.ai3d-annot-action-btn.is-delete:hover {
  color: var(--text-error);
}

/* Pin count badge on annotation toolbar button */
.ai3d-pin-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 14px;
  height: 14px;
  border-radius: 7px;
  background: var(--interactive-accent);
  color: var(--text-on-accent);
  font-size: 9px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  pointer-events: none;
}

/* --- Pin Hover Popover --- */

.ai3d-pin-popover {
  position: fixed;
  left: var(--popover-left, 0);
  top: var(--popover-top, 0);
  z-index: 100;
  max-width: 320px;
  max-height: 240px;
  background: var(--background-primary);
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-s);
  overflow: hidden;
  transform: translateX(-50%);
  pointer-events: auto;
}

.ai3d-pin-popover-title {
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-accent);
  border-bottom: 1px solid var(--background-modifier-border);
}

.ai3d-pin-popover-body {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  line-clamp: 8;
  -webkit-line-clamp: 8;
  -webkit-box-orient: vertical;
}

.ai3d-pin-popover-body--markdown {
  display: block;
  overflow-y: auto;
  text-overflow: unset;
  line-clamp: unset;
  -webkit-line-clamp: unset;
  -webkit-box-orient: initial;
  white-space: normal;
  word-break: break-word;
}

/* --- Pin Pulse Animation (note heading hover) --- */

@keyframes ai3d-pin-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(74, 158, 255, 0.6); transform: var(--pin-anchor-translate) scale(1); }
  50%  { box-shadow: 0 0 0 8px rgba(74, 158, 255, 0); transform: var(--pin-anchor-translate) scale(1.2); }
  100% { box-shadow: 0 0 0 0 rgba(74, 158, 255, 0); transform: var(--pin-anchor-translate) scale(1); }
}

.ai3d-pin-pulse {
  animation: ai3d-pin-pulse 1.2s ease-out;
}

/* --- Heading Pin Badge --- */

.ai3d-heading-pin-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
  font-size: 0.75em;
  opacity: 0.5;
  transition: opacity 0.15s;
  vertical-align: middle;
}

.ai3d-heading-pin-badge-swatch {
  width: 0.8em;
  height: 0.8em;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.15s, box-shadow 0.15s;
}

.ai3d-heading-pin-badge-count {
  font-size: 0.95em;
  font-weight: 700;
  line-height: 1;
  color: var(--text-muted);
}

.ai3d-heading-pin-badge:hover {
  opacity: 0.9;
}

.ai3d-heading-pin-badge-swatch:hover,
.ai3d-heading-pin-badge-swatch:focus-visible {
  opacity: 1;
  transform: scale(1.3);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12), 0 0 0 3px rgba(255, 255, 255, 0.14);
  outline: none;
}

/* Keep utility hiding stronger than later hover/layout display rules. */
body .is-hidden.is-hidden.is-hidden {
  display: none;
}

/* Measurement details inside the helper toolbar */
.ai3d-measurement-details {
  flex: 1 0 100%;
  min-width: 0;
  padding: 6px 2px 1px;
  margin-top: 2px;
  background: transparent;
  border: none;
  border-top: 1px solid var(--background-modifier-border);
  border-radius: 0;
  color: var(--text-normal);
  font-size: var(--font-ui-smaller);
  box-shadow: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.ai3d-measurement-details.is-hidden {
  display: none;
}

.ai3d-measurement-details-title {
  display: none;
}

.ai3d-measurement-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  min-width: 0;
}

.ai3d-measurement-section + .ai3d-measurement-section {
  padding-top: 6px;
  border-top: 1px solid var(--background-modifier-border);
}

.ai3d-measurement-section-title {
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 650;
  line-height: 1.2;
}

.ai3d-measurement-detail-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 0;
}

.ai3d-measurement-detail-actions {
  justify-content: flex-start;
  margin-bottom: 0;
}

.ai3d-measurement-record-summary {
  flex: 1 1 auto;
  min-width: 120px;
  color: var(--text-faint);
  font-size: var(--font-ui-smaller);
  font-variant-numeric: tabular-nums;
}

.ai3d-measurement-detail-action {
  width: 28px;
  height: 26px;
  color: var(--text-muted);
}

.ai3d-measurement-detail-action:disabled {
  color: var(--text-faint);
  opacity: 0.5;
  cursor: default;
}

.ai3d-measurement-detail-label {
  flex: 0 0 72px;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
}

.ai3d-measurement-detail-readonly {
  padding: 2px 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-variant-numeric: tabular-nums;
}

.ai3d-measurement-reference-row {
  align-items: center;
}

.ai3d-measurement-reference-value {
  min-width: 88px;
}

.ai3d-measurement-reference-input {
  width: 86px;
}

.ai3d-measurement-reference-apply {
  width: auto;
  min-width: 42px;
  height: 26px;
  padding: 0 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 600;
}

.ai3d-measurement-reference-apply:hover:not(:disabled) {
  background: var(--background-modifier-hover);
  color: var(--text-normal);
}

.ai3d-measurement-reference-apply:disabled {
  opacity: 0.45;
  cursor: default;
}

.ai3d-measurement-detail-input {
  width: 68px;
  min-height: 26px;
  padding: 2px 6px;
  font-size: var(--font-ui-smaller);
  background: var(--background-primary);
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  color: var(--text-normal);
  font-variant-numeric: tabular-nums;
}

.ai3d-measurement-detail-select {
  min-height: 26px;
  padding: 2px 6px;
  font-size: var(--font-ui-smaller);
  background: var(--background-primary);
  border: 1px solid var(--background-modifier-border);
  border-radius: var(--radius-s);
  color: var(--text-normal);
}

.ai3d-measurement-detail-lock {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-ui-smaller);
  color: var(--text-muted);
  cursor: pointer;
}

.ai3d-measurement-detail-scale-actions {
  margin-top: 2px;
  gap: 4px;
}

.ai3d-measurement-detail-scale-actions .ai3d-inline-btn {
  width: auto;
  min-width: 56px;
  height: 26px;
  padding: 0 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: var(--font-ui-smaller);
  font-weight: 600;
}

.ai3d-measurement-detail-scale-actions .ai3d-inline-btn:hover {
  background: var(--background-modifier-hover);
  color: var(--text-normal);
}

.ai3d-inline-btn[data-ai3d-action="toggle-measurement"].ai3d-btn-active {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--interactive-accent) 40%, transparent);
}

.ai3d-inline-btn[data-ai3d-action="toggle-slice"].ai3d-btn-active {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--interactive-accent) 40%, transparent);
}