.directive-openscad {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  overflow: hidden;
  gap: 8px;
  height: var(--openscad-height, calc(100dvh - 80px));
}

/* Left side: wraps preview-container + params card */
.directive-openscad .left-side {
  width: 100%;
  min-height: 120px;
  min-width: 120px;
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
}

.directive-openscad .preview-container {
  width: 100%;
  min-height: 120px;
  border: 1px solid var(--color-spacer);
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--color-background, var(--color--background, #fff));
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
}

.directive-openscad .preview-header {
  border-bottom: 1px solid var(--color-spacer);
  padding: 8px 16px;
  font-weight: 600;
}

.directive-openscad .preview-canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
}

/* Canvas wrapper: relative container for overlay positioning */
.directive-openscad .canvas-wrapper {
  position: relative;
  flex: 1;
  overflow: hidden;
  min-height: 80px;
  display: flex;
}

/* Canvas overlay: covers the canvas area */
.directive-openscad .canvas-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  box-sizing: border-box;
  pointer-events: none;
}

.directive-openscad .canvas-overlay.hidden {
  display: none;
}

/* Loading state */
.directive-openscad .canvas-overlay.loading {
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
}

/* Error state */
.directive-openscad .canvas-overlay.error {
  background: rgba(239, 68, 68, 0.12);
  color: #991b1b;
  align-items: flex-start;
  justify-content: flex-start;
  overflow-y: auto;
  pointer-events: auto;
}

.directive-openscad .canvas-overlay .overlay-message {
  font-weight: 600;
  font-size: 0.95em;
  text-align: center;
}

.directive-openscad .canvas-overlay.error .overlay-message {
  white-space: pre-wrap;
  word-break: break-word;
  font-weight: 400;
  text-align: left;
  font-family: hyperbook-monospace, monospace;
  font-size: 0.85em;
}

.directive-openscad .overlay-dismiss {
  padding: 4px 14px;
  border: 1px solid currentColor;
  border-radius: 4px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 0.85em;
  opacity: 0.8;
  flex: 0 0 auto;
}

.directive-openscad .overlay-dismiss:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.06);
}

/* Spinner */
.directive-openscad .canvas-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: openscad-spin 0.75s linear infinite;
}

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

/* Splitter between canvas and parameters card */
.directive-openscad .canvas-params-splitter {
  width: 100%;
  height: 4px;
  margin: 6px 0;
  cursor: row-resize;
  background: var(--color-spacer);
  border-radius: 999px;
  flex-shrink: 0;
  touch-action: none;
  opacity: 0.45;
  transition: opacity 0.15s ease-in-out;
}

.directive-openscad .canvas-params-splitter:hover {
  opacity: 0.65;
}

/* Parameters card */
.directive-openscad .parameters-panel {
  width: 100%;
  min-height: 80px;
  border: 1px solid var(--color-spacer);
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--color-background, var(--color--background, #fff));
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.directive-openscad .parameters-panel.hidden {
  display: none;
}

.directive-openscad .parameters-header {
  border-bottom: 1px solid var(--color-spacer);
  padding: 8px 16px;
  font-weight: 600;
  flex-shrink: 0;
}

.directive-openscad .parameters-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 12px;
  box-sizing: border-box;
}

.directive-openscad .parameters-body > * + * {
  margin-top: 10px;
}

.directive-openscad .editor-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  min-height: 120px;
  min-width: 120px;
  flex: 1 1 0;
}

/* Main left/right splitter */
.directive-openscad .splitter {
  background: var(--color-spacer);
  border-radius: 999px;
  flex-shrink: 0;
  touch-action: none;
  opacity: 0.45;
  transition: opacity 0.15s ease-in-out;
}

.directive-openscad .splitter:hover {
  opacity: 0.65;
}

.directive-openscad.split-vertical .splitter {
  width: 100%;
  height: 4px;
  cursor: row-resize;
}

.directive-openscad.split-horizontal .splitter {
  width: 4px;
  height: 100%;
  cursor: col-resize;
}

.directive-openscad.resizing {
  user-select: none;
}

.directive-openscad .buttons {
  display: flex;
  border: 1px solid var(--color-spacer);
  border-radius: 8px;
  border-bottom: none;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  overflow: hidden;
}

.directive-openscad .buttons.bottom {
  border: 1px solid var(--color-spacer);
  border-radius: 8px;
  border-top: none;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.directive-openscad button {
  flex: 1;
  padding: 8px 16px;
  border: none;
  border-right: 1px solid var(--color-spacer);
  background-color: var(--color-background, var(--color--background, #fff));
  color: var(--color-text);
  cursor: pointer;
}

.directive-openscad .buttons select.download-format {
  flex: 0 0 auto;
  min-width: 72px;
  padding: 8px 10px;
  border: none;
  border-right: 1px solid var(--color-spacer);
  background-color: var(--color-background, var(--color--background, #fff));
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

.directive-openscad .buttons button:last-child {
  border-right: none;
}

.directive-openscad button.fullscreen {
  flex: 0 0 auto;
  min-width: 42px;
  width: 42px;
  padding: 8px 0;
}

.directive-openscad button:hover,
.directive-openscad button.active {
  background-color: var(--color-spacer);
}

.directive-openscad .editor,
.directive-openscad .parameters {
  width: 100%;
  border: 1px solid var(--color-spacer);
  flex: 1;
  margin: 0;
  min-height: 0;
  overflow: hidden;
}

.directive-openscad .editor .cm-editor {
  height: 100%;
}

/* The parameters textarea is always hidden — the form replaces it visually */
.directive-openscad .parameters {
  display: none !important;
}

.directive-openscad .param-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.directive-openscad .param-row label {
  flex: 1;
  font-weight: 500;
  min-width: 0;
  word-break: break-word;
}

.directive-openscad .param-row input[type="text"],
.directive-openscad .param-row input[type="number"],
.directive-openscad .param-row select {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--color-spacer);
  border-radius: 4px;
  background: var(--color-background, var(--color--background, #fff));
  color: var(--color-text);
  font-family: inherit;
}

.directive-openscad .param-vector {
  flex: 1;
  display: flex;
  gap: 4px;
}

.directive-openscad .param-vector input[type="number"] {
  flex: 1;
  min-width: 0;
}

.directive-openscad .param-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.directive-openscad .params-empty {
  color: var(--color-text-muted, #888);
  font-style: italic;
  margin: auto;
  text-align: center;
}

.directive-openscad .param-group {
  border: 1px solid var(--color-spacer);
  border-radius: 6px;
  overflow: hidden;
}

.directive-openscad .param-group-summary {
  padding: 6px 12px;
  font-weight: 600;
  cursor: pointer;
  background: var(--color-background, var(--color--background, #fff));
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.directive-openscad .param-group-summary::-webkit-details-marker {
  display: none;
}

.directive-openscad .param-group-summary::before {
  content: "▶";
  font-size: 0.65em;
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

.directive-openscad .param-group[open] .param-group-summary::before {
  transform: rotate(90deg);
}

.directive-openscad .param-group-summary:hover {
  background: var(--color-spacer);
}

.directive-openscad .param-group-body {
  padding: 8px 12px;
  border-top: 1px solid var(--color-spacer);
}

.directive-openscad .param-group-body > * + * {
  margin-top: 10px;
}

.directive-openscad:fullscreen {
  width: 100vw;
  height: 100dvh !important;
  padding: 12px;
  box-sizing: border-box;
  background-color: var(--color-background, var(--color--background, #fff));
}

.directive-openscad:fullscreen::backdrop {
  background-color: var(--color-background, var(--color--background, #fff));
}

@media screen and (min-width: 1024px) {
  .directive-openscad {
    flex-direction: row;
  }

  .directive-openscad .left-side,
  .directive-openscad .editor-container {
    flex: 1;
    height: 100% !important;
  }
}

@media (prefers-color-scheme: dark) {
  .directive-openscad .preview-canvas {
    background: linear-gradient(180deg, #2a2a2a 0%, #1e1e1e 100%);
  }

  .directive-openscad .canvas-overlay.error {
    background: rgba(239, 68, 68, 0.18);
    color: #fca5a5;
  }

  .directive-openscad .overlay-dismiss:hover {
    background: rgba(255, 255, 255, 0.1);
  }
}