/* Greidi Lab — applied scenario surface (extends app.css tokens) */

.lab-body {
  height: auto;
  min-height: 100vh;
  overflow: auto;
}

.lab-main {
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: 0.85rem 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.lab-head h1 {
  margin: 0.1rem 0 0.35rem;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.lab-kicker {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-deep);
}

.lab-lede {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.95rem;
  max-width: 58ch;
}

.lab-prices {
  list-style: none;
  margin: 0 0 0.65rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.lab-prices li {
  padding: 0.3rem 0.65rem;
  background: var(--surface-low);
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.88rem;
}

.lab-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.lab-stages li {
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--outline-soft);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--card);
}

.lab-stages li.is-current {
  border-color: var(--primary);
  color: var(--primary-deep);
  background: var(--primary-soft);
}

.lab-stages li.is-done {
  border-color: var(--secondary);
  color: var(--secondary);
  background: var(--secondary-soft);
}

/* Side-by-side workspace on wide screens */
.lab-workspace {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.15fr);
  gap: 1rem;
  align-items: start;
}

.lab-chart-panel,
.lab-stage-panel {
  background: var(--card);
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-1);
  padding: 0.85rem 1rem 1rem;
  min-width: 0;
}

.lab-chart-panel {
  position: sticky;
  top: 0.75rem;
}

.lab-chart-wrap {
  width: 100%;
  overflow: hidden;
  max-width: 28rem;
  margin: 0 auto;
}

#lab-chart {
  width: 100%;
  height: auto;
  display: block;
  background: linear-gradient(180deg, #f8fafc 0%, #eef6ff 100%);
  border-radius: 0.5rem;
}

.lab-slider-row {
  margin-top: 0.65rem;
  display: grid;
  gap: 0.35rem;
}

.lab-slider-row label {
  font-weight: 600;
  font-size: 0.88rem;
}

.lab-slider-controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.lab-slider-controls input[type="range"] {
  flex: 1;
  min-width: 0;
}

.lab-slider-controls input[type="number"] {
  width: 4.25rem;
  padding: 0.3rem 0.4rem;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-btn);
  font: inherit;
}

.lab-live-costs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  font-weight: 700;
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}

.lab-live-costs.is-hidden {
  visibility: hidden;
}

.lab-stage-panel h2 {
  margin: 0 0 0.3rem;
  font-size: 1.2rem;
}

.stage-prompt {
  margin: 0 0 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

.stage-form {
  display: grid;
  gap: 0.65rem;
}

.stage-form label {
  display: grid;
  gap: 0.25rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.stage-form input[type="text"],
.stage-form input[type="number"],
.stage-form select {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-btn);
  font: inherit;
  font-size: 1rem;
  max-width: 100%;
  width: 100%;
}

.choice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.choice-row label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-btn);
  font-weight: 600;
  cursor: pointer;
  background: var(--paper);
}

.choice-row input {
  margin: 0;
}

.lab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.lab-actions .btn {
  appearance: none;
  border: 1px solid var(--outline-soft);
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-btn);
  cursor: pointer;
}

.lab-actions .btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.lab-actions .btn.ghost {
  background: transparent;
}

.lab-actions .btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.lab-feedback,
.lab-hint {
  margin: 0.75rem 0 0;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
}

.lab-feedback.ok {
  background: var(--secondary-soft);
  color: var(--ok);
}

.lab-feedback.bad {
  background: #fce8e8;
  color: var(--bad);
}

.lab-hint {
  background: var(--primary-soft);
  color: var(--primary-deep);
}

.lab-error {
  margin: 0;
  color: var(--bad);
  font-weight: 600;
}

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

.lab-done-banner {
  margin: 0;
  padding: 0.75rem 0.9rem;
  background: var(--secondary-soft);
  border-radius: var(--radius-btn);
  font-weight: 700;
  color: var(--ok);
}

.lab-next-transfer {
  margin-top: 0.85rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--outline-soft);
  border-radius: var(--radius-btn);
  background: var(--surface-low);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  align-items: flex-start;
}

.lab-next-why {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.92rem;
}

/* Stack on tablet / phone */
@media (max-width: 900px) {
  .lab-workspace {
    grid-template-columns: 1fr;
  }

  .lab-chart-panel {
    position: static;
  }

  .lab-chart-wrap {
    max-width: 22rem;
  }
}

@media (max-width: 640px) {
  .lab-main {
    padding: 0.65rem 0.85rem 2rem;
  }

  .lab-chart-wrap {
    max-width: none;
  }

  .lab-slider-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .lab-slider-controls input[type="number"] {
    width: 100%;
  }
}