/* Layout for the existing demo runner; shared visual tokens are in style.css. */
.demo-main .desc {
  max-width: 740px;
}
.hero-img {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  margin: 24px 0;
  border-radius: 20px;
}
.details-grid,
.engineering-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 24px 0;
}
.detail-card,
.eng-card {
  padding: 20px;
  border: 1px solid var(--line);
}
.detail-card p,
.eng-card p {
  font-size: 13px;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
}
.metric-card {
  border: 1px solid var(--line);
  padding: 20px;
  text-align: center;
}
.metric-card strong {
  font-size: 24px;
}
.metric-card span,
.metric-card small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.card {
  padding: 30px;
  margin-top: 32px;
  border: 1px solid var(--line);
}
.card h2 {
  margin-bottom: 12px;
}
.card > p {
  margin-bottom: 20px;
  font-size: 14px;
}
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.status {
  margin-top: 20px;
  font-size: 13px;
}
.calculator-demo,
.iris-demo {
  margin-top: 20px;
  padding: 20px;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 18px;
  scroll-margin-top: 100px;
}
.calculator-display {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  font: 600 28px var(--font-mono);
  text-align: right;
}
.calculator-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 14px;
}
.calculator-grid button {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  transition: opacity 0.2s;
}
.calculator-grid button:hover {
  opacity: 0.75;
}
.iris-header {
  margin-bottom: 18px;
  font-size: 13px;
  font-weight: 500;
}
.iris-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.iris-grid label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}
.iris-grid input {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 16px;
}
.iris-result {
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  margin-top: 18px;
}
.iris-probs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.iris-probs span {
  font-size: 11px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.steps {
  list-style: none;
  margin: 20px 0;
  padding: 0;
}
.steps li {
  position: relative;
  padding-left: 22px;
  font-size: 12px;
  margin-top: 6px;
}
.steps li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
}
.steps li.done::before {
  background: var(--blue);
}
.steps li.error {
  color: var(--error);
}
.frame-wrap {
  position: relative;
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  scroll-margin-top: 100px;
}
.frame-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: var(--canvas);
  font-size: 11px;
}
.frame-badge {
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 9px;
}
.demo-frame {
  width: 100%;
  height: min(68vh, 600px);
  border: 0;
  display: block;
  background: #fff;
}
.frame-skeleton {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
}
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--line);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.error-panel,
.note-panel {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: 12px;
  padding: 20px;
  background: var(--canvas);
}
.error-panel h3,
.note-panel h3 {
  font-size: 17px;
  margin-bottom: 12px;
}
.panel-detail {
  white-space: pre-line;
  font-size: 13px;
  overflow-wrap: anywhere;
}
.panel-actions {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.panel-actions a,
.panel-actions button,
.panel-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  min-height: 44px;
}
.source-meta {
  font-size: 12px;
  margin-top: 18px;
}
.source-meta code {
  padding: 3px 6px;
  border-radius: 4px;
  font-size: 11px;
}
.scroll-arrow {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  z-index: 10;
}
@media (max-width: 640px) {
  .details-grid,
  .engineering-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 520px) {
  .actions > * {
    width: 100%;
  }
}