.circuit-page .circuit-main {
  --circuit-ink: var(--ui-text);
  --circuit-surface: var(--ui-page);
  --circuit-muted: var(--ui-muted);
  --circuit-accent: var(--ui-accent);
  --circuit-grid: var(--ui-line);
  display: block;
  width: 100%;
  max-width: 1680px;
  min-width: 0;
  margin: 0 auto;
  padding: 28px 24px 64px;
  color: var(--ui-text);
  font-family: var(--font-zh-body, var(--font-ui));
}

.circuit-main [hidden] {
  display: none !important;
}
.circuit-main :where(h1, h2, h3, p) {
  margin: 0;
}
.circuit-main :where(h1, h2, h3) {
  color: var(--ui-text);
  font-family: var(--font-zh-title, var(--font-ui));
  letter-spacing: 0;
}
.circuit-main h1 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.5;
}
.circuit-main h2 {
  font-size: 1.06rem;
  line-height: 1.5;
}
.circuit-main h3 {
  font-size: 0.85rem;
}
.circuit-main :where(button, input, textarea, select, .circuit-button) {
  font: inherit;
}
.circuit-main :where(button, .circuit-button) {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--ui-line-strong);
  border-radius: 6px;
  background: var(--ui-surface);
  color: var(--ui-text);
  font-size: 0.82rem;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
}
.circuit-main :where(button, .circuit-button):hover {
  border-color: var(--ui-accent);
  background: var(--ui-accent-soft);
}
.circuit-main :where(button, .circuit-button).is-primary {
  background: var(--ui-accent);
  border-color: var(--ui-accent);
  color: var(--ui-accent-contrast);
}
.circuit-main :where(button, .circuit-button).is-primary:hover:not(:disabled) {
  background: var(--ui-accent-hover);
  border-color: var(--ui-accent-hover);
}
/* The shared shell forces button/link text colors with !important. Keep only
 * filled circuit actions paired with their theme's accent foreground. */
body.circuit-page .circuit-main :where(button, .circuit-button).is-primary,
body.circuit-page
  .circuit-main
  :where(button, .circuit-button).is-primary
  :where(span, strong, small) {
  color: var(--ui-accent-contrast) !important;
}
.circuit-main button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}
.circuit-main :where(button, input, textarea, select, a):focus-visible {
  outline: 2px solid var(--ui-focus, var(--ui-accent));
  outline-offset: 3px;
}
.circuit-main :where(input:not([type='range']):not([type='checkbox']), textarea, select) {
  width: 100%;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--ui-line-strong);
  border-radius: 5px;
  background: var(--ui-surface);
  color: var(--ui-text);
  font-size: 0.86rem;
  line-height: 1.5;
}
.circuit-main textarea {
  resize: vertical;
}
.circuit-main input[type='checkbox'] {
  accent-color: var(--ui-accent);
}
.circuit-main label {
  display: grid;
  gap: 6px;
  font-size: 0.77rem;
  color: var(--ui-muted);
  min-width: 0;
}
.circuit-heading,
.circuit-section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}
.circuit-heading > div > p:last-child {
  margin-top: 8px;
  color: var(--ui-muted);
  font-size: 0.88rem;
  line-height: 1.8;
}
.circuit-main .circuit-kicker {
  margin: 0 0 6px;
  color: var(--ui-muted);
  font-size: 0.77rem;
}
.circuit-kicker a {
  color: var(--ui-accent);
}
.circuit-heading-actions,
.circuit-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.circuit-editor-actions > :is(button, a) {
  white-space: nowrap;
  gap: 8px;
}
.circuit-editor-actions svg {
  width: 18px;
  height: 18px;
  flex: none;
}
.circuit-main .circuit-challenge-entry {
  border-color: #74d6a4;
  background: color-mix(in srgb, #74d6a4 10%, var(--ui-surface));
  color: #74d6a4;
  font-weight: 700;
}
.circuit-main .circuit-challenge-entry:hover {
  border-color: #8ee8ba;
  background: color-mix(in srgb, #74d6a4 18%, var(--ui-surface));
  color: #8ee8ba;
}
.circuit-document-heading {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(260px, 2fr);
  gap: 14px 22px;
  margin-bottom: 24px;
}
.circuit-document-meta,
.circuit-document-heading > .circuit-status,
.circuit-document-heading > a {
  grid-column: 1/-1;
}
.circuit-document-meta {
  color: var(--ui-muted);
  font-size: 0.76rem;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}
.circuit-status {
  color: var(--ui-muted);
  font-size: 0.82rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}
.circuit-status:empty {
  display: none;
}
.circuit-status.is-error {
  color: var(--ui-danger, #bc4b40);
}
.circuit-status.is-success {
  color: var(--ui-accent);
}
.circuit-workspace {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 226px;
  border: 1px solid var(--ui-line);
  border-radius: 8px;
  background: var(--ui-surface);
  overflow: hidden;
}
.circuit-palette,
.circuit-inspector {
  padding: 16px 12px;
  min-width: 0;
}
.circuit-palette {
  border-right: 1px solid var(--ui-line);
}
.circuit-palette > p,
.circuit-inspector > p {
  margin: 7px 0 14px;
  color: var(--ui-muted);
  font-size: 0.75rem;
  line-height: 1.6;
}
#circuit-palette {
  display: grid;
  gap: 5px;
  max-height: 480px;
  overflow-y: auto;
}
#circuit-palette button {
  justify-content: flex-start;
  gap: 8px;
  min-height: 34px;
  padding: 6px 8px;
  font-size: 0.74rem;
}
.circuit-palette-symbol {
  width: 26px;
  color: var(--ui-accent);
  font: 600 0.8rem var(--font-code, monospace);
  text-align: center;
  flex: 0 0 auto;
}
.circuit-example-label {
  margin-top: 22px;
}
#circuit-load-example {
  margin-top: 8px;
  width: 100%;
}
.circuit-example-admin {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--ui-line);
  font-size: 0.75rem;
}
.circuit-example-admin summary {
  cursor: pointer;
  font-weight: 600;
}
.circuit-example-admin p {
  margin: 10px 0;
  color: var(--ui-muted);
  line-height: 1.6;
  overflow-wrap: anywhere;
}
.circuit-example-admin button {
  width: 100%;
  margin-top: 7px;
  padding: 8px;
  white-space: normal;
  font-size: 0.74rem;
}
.circuit-example-delete-confirm {
  padding-top: 5px;
}
.circuit-reference-hint {
  flex-basis: 100%;
  margin: 4px 0;
  color: var(--ui-muted);
  font-size: 0.78rem;
  line-height: 1.6;
}
#circuit-example-delete-yes {
  color: var(--ui-danger, #d77c74);
}
#circuit-retry-examples {
  white-space: normal;
  font-size: 0.74rem;
}
.circuit-canvas-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--ui-page);
}
.circuit-canvas-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ui-line);
  color: var(--ui-muted);
  font-size: 0.72rem;
  min-height: 54px;
}
.circuit-canvas-toolbar p {
  line-height: 1.6;
}
#circuit-count {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
}
.circuit-stage {
  width: 100%;
  min-height: 440px;
  flex: 1;
  overflow: auto;
  overscroll-behavior: contain;
}
.circuit-stage > svg {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 400px;
  height: 100%;
}
.circuit-canvas-note {
  padding: 12px 14px;
  border-top: 1px solid var(--ui-line);
  color: var(--ui-muted);
  font-size: 0.72rem;
  line-height: 1.7;
}
.circuit-inspector {
  border-left: 1px solid var(--ui-line);
}
.circuit-selected-name {
  margin: 12px 0;
  font: 600 0.84rem var(--font-code, monospace);
}
.circuit-selection-actions {
  display: flex;
  gap: 6px;
  margin: 12px 0;
}
.circuit-selection-actions button {
  min-height: 34px;
  font-size: 0.73rem;
  padding: 6px 8px;
}
#circuit-parameters {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}
#circuit-parameters input {
  font-variant-numeric: tabular-nums;
}
#circuit-parameters .circuit-parameter-hint {
  margin: -4px 0 4px;
  color: var(--ui-muted);
  font-size: 0.7rem;
  line-height: 1.7;
}
.circuit-connection {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
  border-bottom: 1px solid var(--ui-line);
  font-size: 0.7rem;
  overflow-wrap: anywhere;
}
.circuit-connection button {
  min-height: 28px;
  padding: 4px 6px;
  font-size: 0.68rem;
  flex: 0 0 auto;
}
.circuit-analysis,
.circuit-results,
.circuit-sharing {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid var(--ui-line);
  border-radius: 8px;
  background: var(--ui-surface);
  min-width: 0;
}
#circuit-analysis-form,
.circuit-analysis-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: start;
}
#circuit-analysis-form > label {
  flex: 0 1 180px;
}
.circuit-analysis-fields {
  flex: 1;
}
.circuit-analysis-fields label {
  flex: 1 1 130px;
  max-width: 200px;
}
#circuit-run-status {
  margin-top: 14px;
}
.circuit-source-advice {
  margin-top: 12px;
  padding: 12px 14px;
  border: 1px solid var(--ui-line);
  border-radius: 8px;
  color: var(--ui-text);
  font-size: 13px;
  line-height: 1.65;
}
.circuit-source-advice p {
  margin: 0 0 8px;
}
.circuit-source-advice p:empty {
  display: none;
}
.circuit-source-advice button {
  max-width: 100%;
  white-space: normal;
  text-align: left;
}
#circuit-sampling-count {
  margin: 10px 0 0;
  color: var(--ui-muted);
  font-size: 12px;
}
#circuit-sampling-count:empty {
  display: none;
}
.circuit-traces {
  border: 0;
  padding: 0;
  margin: 0 0 14px;
  min-width: 0;
}
.circuit-traces legend {
  color: var(--ui-muted);
  font-size: 0.78rem;
  margin-bottom: 8px;
}
#circuit-traces {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 14px;
}
.circuit-main .circuit-inline-check {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: var(--ui-text);
  font-size: 0.76rem;
}
.circuit-waveform {
  min-height: 240px;
  overflow: auto;
  border: 1px solid var(--ui-line);
  border-radius: 5px;
  background: var(--ui-page);
}
.circuit-waveform svg {
  display: block;
  width: 100%;
  min-width: 0;
}
.circuit-playback {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
  min-width: 0;
}
.circuit-playback input[type='range'] {
  flex: 1;
  min-width: 60px;
  accent-color: var(--ui-accent);
}
.circuit-playback output {
  font: 0.75rem var(--font-code, monospace);
  min-width: 95px;
}
.circuit-meters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
  gap: 10px;
}
.circuit-meter {
  padding: 12px 14px;
  border: 1px solid var(--ui-line);
  border-radius: 5px;
}
.circuit-meter p {
  color: var(--ui-muted);
  font-size: 0.72rem;
  margin-bottom: 5px;
}
.circuit-meter strong {
  font: 500 1rem var(--font-code, monospace);
  font-variant-numeric: tabular-nums;
}
#circuit-warnings {
  margin-top: 14px;
}
.circuit-sharing {
  display: grid;
  gap: 16px;
}
.circuit-sharing p {
  color: var(--ui-muted);
  font-size: 0.8rem;
  line-height: 1.8;
  margin-top: 8px;
}
#circuit-reference-text {
  font-family: var(--font-code, monospace);
  font-size: 0.75rem;
}
.circuit-model-notes {
  margin-top: 22px;
  color: var(--ui-muted);
  font-size: 0.77rem;
  line-height: 1.9;
}
.circuit-model-notes summary {
  cursor: pointer;
  color: var(--ui-text);
}
.circuit-model-notes p {
  margin-top: 12px;
  max-width: 110ch;
}
.circuit-model-notes a {
  color: var(--ui-accent);
}
.circuit-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0;
}
.circuit-list-card {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--ui-line);
  border-radius: 8px;
  background: var(--ui-surface);
}
.circuit-list-card > a {
  color: var(--ui-text);
  font-size: 1.02rem;
  font-weight: 600;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.circuit-list-card > a:hover {
  color: var(--ui-accent);
}
.circuit-list-card p {
  color: var(--ui-muted);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
}
.circuit-list-card small {
  color: var(--ui-muted);
  font-size: 0.73rem;
  font-variant-numeric: tabular-nums;
}
.circuit-empty {
  padding: 38px 24px;
  border: 1px dashed var(--ui-line-strong);
  border-radius: 8px;
  color: var(--ui-muted);
  line-height: 1.8;
}
@media (max-width: 1200px) {
  .circuit-workspace {
    grid-template-columns: 142px minmax(0, 1fr);
  }
  .circuit-inspector {
    grid-column: 1/-1;
    border-left: 0;
    border-top: 1px solid var(--ui-line);
  }
  #circuit-parameters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  #circuit-connections {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
  .circuit-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 700px) {
  .circuit-page .circuit-main {
    padding: 18px 12px 90px;
  }
  .circuit-heading,
  .circuit-section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }
  .circuit-heading-actions {
    width: 100%;
  }
  .circuit-heading-actions > * {
    flex: 1;
  }
  .circuit-list-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .circuit-editor-actions {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
  }
  .circuit-editor-actions > :is(button, a) {
    min-width: 0;
    height: 48px;
    padding: 0;
    border-radius: 8px;
  }
  .circuit-editor-actions .circuit-action-label {
    display: none;
  }
  .circuit-editor-actions svg,
  .circuit-editor-actions #circuit-ai-toggle img {
    width: 22px;
    height: 22px;
  }
  .circuit-editor-actions > :is(a, #circuit-copy, #circuit-ai-toggle) {
    background: transparent;
  }
  .circuit-document-heading {
    grid-template-columns: 1fr;
  }
  .circuit-workspace {
    display: flex;
    flex-direction: column;
  }
  .circuit-palette {
    border-right: 0;
    border-bottom: 1px solid var(--ui-line);
  }
  #circuit-palette {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  #circuit-palette button {
    font-size: 0.7rem;
    padding: 6px;
    gap: 4px;
  }
  .circuit-palette-symbol {
    width: 20px;
    font-size: 0.72rem;
  }
  .circuit-example-label {
    margin-top: 14px;
  }
  .circuit-stage {
    min-height: 400px;
    max-height: 450px;
  }
  .circuit-canvas-toolbar {
    flex-wrap: wrap;
  }
  .circuit-canvas-toolbar p {
    flex: 1 1 200px;
  }
  #circuit-parameters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  #circuit-connections {
    grid-template-columns: 1fr;
  }
  .circuit-analysis,
  .circuit-results,
  .circuit-sharing {
    margin-top: 18px;
    padding: 16px 12px;
  }
  #circuit-analysis-form > label {
    flex-basis: 100%;
  }
  .circuit-analysis-fields label {
    max-width: none;
  }
  .circuit-playback {
    flex-wrap: wrap;
    gap: 10px;
  }
  .circuit-playback label {
    flex: 1 1 120px;
    min-width: 90px;
    white-space: nowrap;
    order: 2;
  }
  .circuit-playback input[type='range'] {
    flex: 1 1 calc(100% - 110px);
    order: 3;
  }
  .circuit-playback button {
    order: 1;
  }
  .circuit-playback output {
    order: 4;
  }
  .circuit-list {
    grid-template-columns: 1fr;
  }
}

.circuit-plot-controls {
  border-block: 1px solid var(--ui-line);
  padding: 16px 0;
  margin-bottom: 12px;
}
.circuit-plot-channels,
.circuit-plot-ranges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
  gap: 12px;
}
.circuit-plot-controls label {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 5px;
  font-size: 12px;
  color: var(--ui-muted);
}
.circuit-plot-controls input,
.circuit-plot-controls select {
  width: 100%;
  min-width: 0;
  min-height: 36px;
}
.circuit-plot-controls details {
  margin-top: 14px;
}
.circuit-plot-controls summary {
  cursor: pointer;
  font-size: 13px;
  padding-block: 4px;
}
.circuit-plot-ranges {
  margin-top: 10px;
}
.circuit-math-row {
  display: grid;
  grid-template-columns: 28px minmax(70px, 0.8fr) minmax(120px, 2fr) minmax(55px, 0.6fr) auto;
  align-items: end;
  gap: 10px;
  margin-block: 12px;
}
.circuit-math-row strong {
  align-self: center;
  font:
    12px ui-monospace,
    monospace;
}
.circuit-math-expression input {
  font-family: ui-monospace, monospace;
}
.circuit-math-row button {
  min-height: 36px;
}
.circuit-matrix-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.circuit-matrix-note {
  font-size: 12px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}
@media (max-width: 600px) {
  .circuit-plot-channels {
    grid-template-columns: 1fr 1fr;
  }
  .circuit-plot-channels > label:first-child {
    grid-column: 1 / -1;
  }
  .circuit-math-row {
    grid-template-columns: 28px minmax(0, 1fr) minmax(60px, 0.5fr) auto;
  }
  .circuit-math-expression {
    grid-column: 2 / -1;
    grid-row: 2;
  }
  .circuit-math-row strong {
    grid-row: 1 / 3;
  }
}

.circuit-annotation-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-block: 12px;
}
.circuit-main button[aria-pressed='true'][data-annotation-pick],
.circuit-main #circuit-annotation-pick[aria-pressed='true'] {
  background: var(--ui-accent-soft);
  border-color: var(--ui-accent);
}
.circuit-waveform.is-annotation-picking svg {
  cursor: crosshair;
}
.circuit-annotations {
  border-top: 1px solid var(--ui-line);
  padding-top: 14px;
  margin-top: 14px;
}
.circuit-annotations form {
  margin-block: 12px;
  padding: 12px;
  border: 1px solid var(--ui-line);
  border-radius: 6px;
}
.circuit-annotation-fields {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.circuit-annotations form .circuit-actions {
  margin-top: 10px;
}
.circuit-annotation-list {
  padding: 0;
  margin: 12px 0 0;
  list-style: none;
}
.circuit-annotation-list li {
  display: flex;
  align-items: start;
  gap: 8px;
  padding-block: 8px;
  border-top: 1px solid var(--ui-line);
}
.circuit-annotation-list .circuit-annotation-entry {
  display: grid;
  flex: 1;
  justify-content: stretch;
  text-align: left;
  min-width: 0;
  gap: 4px;
  border: 0;
  background: transparent;
  padding: 4px 0;
}
.circuit-annotation-entry span {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.circuit-annotation-entry small {
  color: var(--ui-muted);
  overflow-wrap: anywhere;
}
.circuit-annotation-entry small.is-error {
  color: var(--ui-danger, #d96565);
}
@media (max-width: 600px) {
  .circuit-annotation-toolbar {
    align-items: start;
    flex-direction: column;
    gap: 6px;
  }
  .circuit-annotation-fields {
    grid-template-columns: 1fr 1fr;
  }
  .circuit-annotation-fields > label:first-child {
    grid-column: 1 / -1;
  }
  .circuit-annotations > .circuit-section-heading {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }
}

/* Annotation text stays below the SVG so it cannot cover a waveform. */
.circuit-wave-group .circuit-wave-annotation-legend {
  display: grid;
  gap: 3px;
  margin: 10px 0 16px;
  padding: 8px 0 0;
  border-top: 1px solid var(--circuit-grid);
  list-style: none;
  min-width: 0;
}
.circuit-wave-annotation-legend > li {
  min-width: 0;
}
.circuit-wave-group .circuit-wave-annotation-entry {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  width: 100%;
  min-width: 0;
  gap: 8px;
  padding: 6px 4px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--circuit-ink);
  text-align: left;
  font: inherit;
  font-size: 12px;
  line-height: 1.6;
}
.circuit-wave-group button.circuit-wave-annotation-entry:hover {
  background: var(--circuit-surface);
}
.circuit-wave-group button.circuit-wave-annotation-entry:focus-visible {
  outline: 2px solid var(--circuit-accent);
  outline-offset: 1px;
}
.circuit-wave-annotation-details {
  display: grid;
  gap: 2px;
  min-width: 0;
  overflow-wrap: anywhere;
}
.circuit-wave-annotation-details strong {
  font-weight: 500;
  white-space: pre-wrap;
}
.circuit-wave-annotation-details small {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--circuit-muted);
}
.circuit-wave-annotation-swatch {
  position: relative;
  flex: 0 0 20px;
  height: 20px;
}
.circuit-wave-annotation-swatch::after {
  content: '';
  position: absolute;
}
.circuit-wave-annotation-swatch.is-point::after {
  inset: 6px;
  border: 1.75px solid currentColor;
  border-radius: 50%;
}
.circuit-wave-annotation-swatch.is-vertical::after {
  inset: 1px auto 1px 9px;
  border-left: 1.5px dashed currentColor;
}
.circuit-wave-annotation-swatch.is-horizontal::after {
  inset: 9px 1px auto;
  border-top: 1.5px dashed currentColor;
}
.circuit-wave-group [data-annotation-id]:focus-visible {
  outline: 1px solid var(--circuit-accent);
  outline-offset: 3px;
}

.circuit-viewport-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--ui-line);
}
.circuit-viewport-controls button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  font-size: 1.1rem;
}
.circuit-viewport-controls svg {
  width: 19px;
  height: 19px;
}
#circuit-zoom-value {
  min-width: 48px;
  text-align: center;
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}
#circuit-pan[aria-pressed='true'] {
  color: var(--circuit-accent);
  border-color: currentColor;
}
.circuit-stage {
  touch-action: none;
  overflow: hidden;
}
.circuit-stage.is-panning,
.circuit-stage.is-panning * {
  cursor: grab !important;
}

@media (min-width: 701px) {
  .circuit-stage {
    min-height: clamp(520px, 68vh, 900px);
  }
}
.circuit-stage {
  position: relative;
}
.circuit-stage > svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  min-height: 0;
}
.circuit-canvas-panel.is-expanded {
  position: fixed;
  inset: 12px;
  z-index: 2000;
  border: 1px solid var(--ui-line);
  border-radius: 12px;
  overflow: hidden;
}
.circuit-canvas-panel.is-expanded .circuit-stage {
  min-height: 0;
  max-height: none;
}
.circuit-canvas-panel.is-expanded .circuit-canvas-toolbar {
  flex-wrap: wrap;
}
@media (max-width: 700px) {
  .circuit-canvas-panel.is-expanded {
    inset: 4px;
  }
  .circuit-canvas-panel.is-expanded .circuit-canvas-note {
    display: none;
  }
}

#circuit-component-menu {
  width: min(680px, 94vw);
  max-height: 82dvh;
  overflow: auto;
  color: var(--circuit-ink);
  background: var(--circuit-surface, #102228);
  border: 1px solid #456069;
  border-radius: 16px;
  padding: 20px;
}
#circuit-component-menu::backdrop {
  background: #0009;
}
#circuit-component-menu header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#circuit-palette {
  display: block;
}
.circuit-component-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.circuit-component-grid button {
  min-height: 44px;
}
.circuit-page-glow {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, #ffe7a1, #ffd06b66);
  opacity: var(--circuit-lamp-glow, 0);
  pointer-events: none;
  z-index: 2001;
  transition: opacity 100ms linear;
}
@media (max-width: 600px) {
  .circuit-component-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}