/* Article-scoped visuals for "Life from simple rules" */

.article-body .ca-lab {
  margin: 12px 0 8px;
  padding: 28px 24px 24px;
  border: 1px solid var(--rule);
  background:
    radial-gradient(ellipse 70% 50% at 90% 0%, rgba(var(--goldrgb), 0.1), transparent 55%),
    radial-gradient(ellipse 50% 40% at 0% 100%, rgba(var(--goldrgb), 0.06), transparent 50%),
    var(--hover);
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.ca-lab-head { display: flex; flex-direction: column; gap: 10px; }

.ca-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.ca-lab-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.02em;
  color: var(--ink);
}

.ca-lab-sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 44ch;
}

.ca-canvas-wrap {
  position: relative;
  border: 1px solid var(--rule);
  background: var(--bg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.ca-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.ca-controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.ca-control {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ca-control-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
}

.ca-control-label strong {
  color: var(--gold);
  font-weight: 500;
}

.ca-control input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--rule2);
  outline: none;
  cursor: pointer;
}

.ca-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 1px rgba(var(--goldrgb), 0.5);
}

.ca-control input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--bg);
}

.ca-presets,
.ca-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ca-chip,
.ca-btn {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 14px;
  border: 1px solid var(--rule2);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
}

.ca-chip:hover,
.ca-btn:hover {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--gold) 45%, var(--rule2));
}

.ca-chip[aria-pressed="true"] {
  color: var(--bg);
  background: var(--gold);
  border-color: var(--gold);
}

.ca-btn--primary {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--gold) 55%, var(--rule2));
  background: color-mix(in srgb, var(--gold) 12%, transparent);
}

.ca-btn--primary:hover {
  background: color-mix(in srgb, var(--gold) 22%, transparent);
}

.ca-stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 8px;
  border-top: 1px solid var(--rule);
}

.ca-stats div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ca-stats dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}

.ca-stats dd {
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.02em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.ca-stats .ca-bin {
  font-family: var(--mono);
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.article-body code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--gold);
}

@media (max-width: 640px) {
  .article-body .ca-lab { padding: 22px 18px; }
  .ca-stats { grid-template-columns: 1fr; gap: 18px; }
  .ca-chip,
  .ca-btn { flex: 1 1 auto; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  .ca-chip,
  .ca-btn { transition: none; }
}