/* Lab layout & pyramid instrument styles
   Restrained editorial character — workbench, not publication artwork. */

.lab {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--lj-space-lg) var(--lj-space-md) var(--lj-space-2xl);
}

.lab-header {
  margin-bottom: var(--lj-space-xl);
  border-bottom: 1px solid var(--lj-border);
  padding-bottom: var(--lj-space-md);
}

.lab-header h1 {
  margin: 0 0 var(--lj-space-xs);
  font-size: 1.5rem;
  color: var(--lj-ink);
}

.lab-header p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--lj-muted);
  font-family: var(--lj-mono);
}

.lab-meta {
  margin-top: var(--lj-space-sm);
  font-size: 0.75rem;
  color: var(--lj-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Stage */
.pyramid-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--lj-space-md);
  margin: var(--lj-space-xl) 0;
}

.pyramid-visual {
  width: min(100%, 360px);
  aspect-ratio: 320 / 280;
}

.pyramid-svg {
  width: 100%;
  height: auto;
  display: block;
}

.proxy-label {
  font-family: var(--lj-mono);
  font-size: 7px;
  fill: var(--lj-muted);
  letter-spacing: 0.06em;
}

.region-face {
  cursor: pointer;
  pointer-events: auto;
  stroke: var(--lj-ink);
  stroke-width: 1.25;
  transition: fill 0.15s ease;
}

.region-face--a {
  fill: var(--lj-paper);
}

.region-face--b {
  fill: #efece4;
}

.region-face--c {
  fill: #e8e4da;
}

.pyramid-region.is-active .region-face {
  fill: var(--lj-lemon-soft);
  stroke-width: 1.75;
}

.pyramid-region.is-focused .region-face {
  cursor: pointer;
  pointer-events: auto;
  stroke: var(--lj-lemon-deep);
  stroke-width: 1.75;
}

.pyramid-region.is-expanded .region-face {
  cursor: pointer;
  pointer-events: auto;
  fill: var(--lj-lemon);
}

.region-label {
  font-family: var(--lj-serif);
  font-size: 18px;
  fill: var(--lj-ink);
  pointer-events: none;
}

.region-sublabel {
  font-family: var(--lj-mono);
  font-size: 8px;
  fill: var(--lj-muted);
  pointer-events: none;
  letter-spacing: 0.04em;
}

.pyramid-outline {
  stroke: var(--lj-ink);
  stroke-width: 1;
  opacity: 0.35;
  pointer-events: none;
}

.pyramid-status {
  font-family: var(--lj-mono);
  font-size: 0.75rem;
  color: var(--lj-muted);
  min-height: 1.25rem;
  text-align: center;
}

/* Controls */
.controls {
  display: flex;
  flex-direction: column;
  gap: var(--lj-space-lg);
  margin-top: var(--lj-space-lg);
}

.control-block {
  border: 1px solid var(--lj-border);
  background: var(--lj-paper);
  padding: var(--lj-space-md);
}

.control-block h2 {
  margin: 0 0 var(--lj-space-sm);
  font-size: 0.8125rem;
  font-family: var(--lj-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--lj-muted);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--lj-space-sm);
}

.btn {
  appearance: none;
  border: 1px solid var(--lj-ink);
  background: transparent;
  color: var(--lj-ink);
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-family: var(--lj-sans);
  min-height: 44px;
  min-width: 44px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: var(--lj-ink);
  color: var(--lj-off-white);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn.is-active,
.btn[aria-pressed="true"] {
  background: var(--lj-ink);
  color: var(--lj-off-white);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn--accent {
  border-color: var(--lj-lemon-deep);
}

.btn--accent:hover:not(:disabled),
.btn--accent[aria-pressed="true"] {
  background: var(--lj-lemon-deep);
  color: var(--lj-off-white);
  border-color: var(--lj-lemon-deep);
}

/* Treatment radio group */
.treatment-list {
  display: flex;
  flex-direction: column;
  gap: var(--lj-space-sm);
}

.treatment-option {
  display: flex;
  align-items: flex-start;
  gap: var(--lj-space-sm);
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1.4;
}

.treatment-option input {
  margin-top: 0.2rem;
  accent-color: var(--lj-lemon-deep);
  width: 1.1rem;
  height: 1.1rem;
}

.treatment-option strong {
  font-weight: 600;
}

.treatment-option span {
  display: block;
  color: var(--lj-muted);
  font-size: 0.8125rem;
}

.lab-footer {
  margin-top: var(--lj-space-2xl);
  padding-top: var(--lj-space-md);
  border-top: 1px solid var(--lj-border);
  font-size: 0.75rem;
  color: var(--lj-muted);
  font-family: var(--lj-mono);
}

.lab-footer a {
  color: var(--lj-ink);
}

/* Responsive */
@media (max-width: 480px) {
  .lab {
    padding: var(--lj-space-md) var(--lj-space-sm) var(--lj-space-xl);
  }

  .btn-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* Reduced motion: keep state legible without movement */
@media (prefers-reduced-motion: reduce) {
  .btn:active:not(:disabled) {
    transform: none;
  }

  .region-face {
  cursor: pointer;
  pointer-events: auto;
    transition: none;
  }
}


/* v0.1.2 — production / reduced-motion: no CSS transition lag after seek */
.pyramid-stage.is-production .region-face,
.pyramid-stage.is-reduced-motion .region-face {
  transition: none !important;
}


/* Crystal overlays — only shown under crystal-2000 skin */
.crystal-facet,
.crystal-edge-hl,
.crystal-inner {
  display: none;
}

[data-skin="crystal-2000"] .crystal-facet,
[data-skin="crystal-2000"] .crystal-edge-hl,
[data-skin="crystal-2000"] .crystal-inner {
  display: block;
}