.local-demo {
  width: min(1540px, calc(100vw - 24px));
}

.local-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: start;
  margin-bottom: 14px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  padding: 14px;
  margin-bottom: 14px;
}

.control-group {
  display: grid;
  gap: 5px;
  min-width: min(340px, 100%);
}

.control-label {
  font-family: "Cinzel", serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.segmented {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.segmented button {
  border: 0;
  border-radius: 0;
  border-right: 1px solid var(--line);
  min-width: 98px;
}

.segmented button:last-child {
  border-right: 0;
}

.segmented button.active {
  color: var(--gold);
  background: rgba(212,168,67,0.18);
}

.editor-grid,
.debug-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 14px;
}

.pi-workbench {
  margin-bottom: 14px;
}

.panel {
  min-width: 0;
}

.source-shell {
  position: relative;
}

.source-shell textarea {
  --source-font-size: 13px;
  --source-line-height: 20.15px;
  --source-pad-x: 14px;
  --source-pad-y: 12px;
  width: 100%;
  min-height: 300px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(4,3,2,0.58);
  color: var(--ink);
  padding: var(--source-pad-y) var(--source-pad-x);
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--source-font-size);
  line-height: var(--source-line-height);
  outline: none;
  position: relative;
  z-index: 1;
}

.source-shell textarea:focus {
  border-color: rgba(212,168,67,0.48);
  box-shadow: 0 0 0 2px rgba(212,168,67,0.08);
}

.source-cursor {
  position: absolute;
  left: 1px;
  right: 1px;
  top: 1px;
  height: calc(var(--source-line-height, 20.15px) + 2px);
  padding-left: var(--source-pad-x, 14px);
  border-left: 3px solid var(--gold);
  background: rgba(212,168,67,0.13);
  border-radius: 5px;
  pointer-events: none;
  z-index: 2;
  transition: transform 120ms ease;
}

.timeline {
  counter-reset: step;
  list-style: none;
  max-height: 520px;
  overflow: auto;
  padding-right: 4px;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  cursor: default;
}

.timeline-item::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--gold);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
}

.timeline-item.active {
  border-color: rgba(212,168,67,0.58);
  background: rgba(212,168,67,0.08);
}

.timeline-title {
  color: var(--gold);
  font-family: "Cinzel", serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.timeline-detail {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  margin-top: 2px;
}

.state-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.tab-panel {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: rgba(212,168,67,0.025);
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
}

.tab-button {
  border: 0;
  border-radius: 0;
  border-right: 1px solid var(--line);
  min-width: 110px;
}

.tab-button.active {
  color: var(--gold);
  background: rgba(212,168,67,0.16);
}

.tab-pane {
  display: none;
  min-height: 210px;
  padding: 10px;
}

.tab-pane.active {
  display: block;
}

.output-list,
.instruction-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 310px;
  overflow: auto;
}

.output-line,
.instruction-item {
  border: 1px solid rgba(212,168,67,0.13);
  border-radius: 4px;
  background: rgba(0,0,0,0.24);
  padding: 6px 8px;
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  line-height: 1.35;
}

.output-line.error {
  border-color: rgba(190,80,70,0.55);
  color: #ffb2a8;
}

.instruction-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 8px;
  cursor: pointer;
}

.instruction-item.active {
  border-color: rgba(212,168,67,0.58);
  background: rgba(212,168,67,0.1);
}

.instruction-index {
  color: var(--muted);
}

.pi-stack-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.8fr;
  gap: 10px;
}

.pi-stack-grid h3 {
  margin-bottom: 8px;
  color: var(--gold);
  font-family: "Cinzel", serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stack-controls {
  display: grid;
  grid-template-columns: minmax(90px, 1fr) repeat(3, minmax(58px, auto));
  gap: 6px;
  margin-top: 8px;
}

.stack-controls button {
  padding-left: 9px;
  padding-right: 9px;
}

.stack-input {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(4,3,2,0.58);
  color: var(--ink);
  padding: 7px 9px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  outline: none;
}

.interactive-stack {
  min-height: 170px;
  max-height: 280px;
  overflow: auto;
  border: 1px dashed rgba(212,168,67,0.2);
  border-radius: 6px;
  padding: 8px;
  background: rgba(0,0,0,0.12);
}

.stack-footer {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-top: 8px;
  position: sticky;
  bottom: 0;
  padding: 8px 0 0;
  background: linear-gradient(180deg, rgba(4,3,2,0.02), rgba(4,3,2,0.9) 35%);
  z-index: 3;
}

.stack-input-wide {
  flex: 1;
}

.stack-index-head {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 8px;
  margin: 0 8px 6px;
  color: var(--muted);
  font-family: "Cinzel", serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.stack-box {
  min-height: 174px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(212,168,67,0.03);
  padding: 10px;
}

.stack-box h3 {
  margin-bottom: 8px;
  color: var(--gold);
  font-family: "Cinzel", serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stack-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stack-item {
  display: grid;
  grid-template-columns: 58px 1fr;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(212,168,67,0.13);
  border-radius: 4px;
  background: rgba(0,0,0,0.24);
  padding: 6px 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--ink);
  cursor: default;
}

.stack-index {
  color: var(--muted);
}

.stack-value {
  min-width: 0;
  overflow-wrap: anywhere;
}

.stack-item.hot {
  border-color: rgba(212,168,67,0.58);
  background: rgba(212,168,67,0.1);
}

.stack-item.selected {
  border-color: rgba(99,201,216,0.78);
  background: rgba(99,201,216,0.12);
}

.stack-item.muted {
  color: var(--muted);
  font-style: italic;
}

.compare-panel {
  margin-bottom: 2px;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.compare-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(212,168,67,0.035);
  padding: 12px;
  min-height: 108px;
}

.compare-card.active {
  border-color: rgba(212,168,67,0.62);
  background: rgba(212,168,67,0.1);
}

.compare-card strong {
  display: block;
  color: var(--gold);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  margin-bottom: 6px;
}

.compare-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

@media (max-width: 980px) {
  .local-hero,
  .editor-grid,
  .debug-grid,
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .local-hero .metrics-row {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .toolbar,
  .button-row,
  .segmented {
    width: 100%;
  }

  .segmented button,
  .button-row button {
    flex: 1;
    min-width: 0;
  }

  .state-grid {
    grid-template-columns: 1fr;
  }

  .pi-stack-grid {
    grid-template-columns: 1fr;
  }

  .stack-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stack-input {
    grid-column: 1 / -1;
  }
}