/* ============================================================
   richolson-playground — hand-written scoped overrides
   ------------------------------------------------------------
   Atomic prepends the compiled Tailwind v4 bundle ABOVE this block.
   - Same palette tokens as the other sections, flipping under a
     .dark ancestor (class-based dark mode).
   - --engine-local / --engine-frontier alias accent / accent2 so the
     exhibit station badges read semantically in the markup.
   - Scoped under .custom-section-richolson-playground so nothing leaks.
   ============================================================ */
.custom-section-richolson-playground.ro-play-site {
  --bg: oklch(0.985 0.008 160);
  --surface: oklch(0.965 0.012 175);
  --surface-2: oklch(0.93 0.016 180);
  --text: oklch(0.24 0.022 165);
  --muted: oklch(0.47 0.024 200);
  --line: oklch(0.88 0.015 175);
  --accent: oklch(0.55 0.14 158);
  --accent2: oklch(0.55 0.13 245);
  --on-accent: oklch(0.99 0.01 160);
  --code-bg: oklch(0.95 0.012 178);
  --accent-ghost: oklch(0.55 0.14 158 / 0.45);

  --engine-local: var(--accent);
  --engine-frontier: var(--accent2);

  --font-sans: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  position: relative;
  display: block;
  min-height: 100vh;
  background: transparent;
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background .4s ease, color .4s ease;
}

.dark .custom-section-richolson-playground.ro-play-site {
  --bg: oklch(0.16 0.012 160);
  --surface: oklch(0.205 0.016 162);
  --surface-2: oklch(0.245 0.02 162);
  --text: oklch(0.945 0.015 150);
  --muted: oklch(0.72 0.02 150);
  --line: oklch(0.31 0.02 160);
  --accent: oklch(0.82 0.16 150);
  --accent2: oklch(0.87 0.15 96);
  --on-accent: oklch(0.17 0.02 160);
  --code-bg: oklch(0.125 0.012 160);
  --accent-ghost: oklch(0.82 0.16 150 / 0.5);
}

.custom-section-richolson-playground.ro-play-site ::selection { background: var(--accent); color: var(--on-accent); }
.custom-section-richolson-playground.ro-play-site ::-moz-selection { background: var(--accent); color: var(--on-accent); }

.custom-section-richolson-playground.ro-play-site .ro-shell-menu summary {
  list-style: none;
}

.custom-section-richolson-playground.ro-play-site .ro-shell-menu summary::-webkit-details-marker {
  display: none;
}

.custom-section-richolson-playground.ro-play-site .ro-shell-menu[open] summary {
  border-color: var(--accent);
}

/* Pressable controls: visible feedback for mouse, touch, and keyboard activation. */
.custom-section-richolson-playground.ro-play-site button:not(:disabled),
.custom-section-richolson-playground.ro-play-site a[href][class*="rounded"] {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transform-origin: center;
  transition-property: transform, box-shadow, filter, border-color, background-color, color;
  transition-duration: .14s;
  transition-timing-function: ease;
}

.custom-section-richolson-playground.ro-play-site button:not(:disabled):active,
.custom-section-richolson-playground.ro-play-site a[href][class*="rounded"]:active {
  transform: translateY(2px) scale(0.975);
  box-shadow: inset 0 2px 9px color-mix(in oklab, var(--text) 18%, transparent), 0 0 0 1px color-mix(in oklab, var(--accent) 42%, transparent);
  filter: brightness(0.94) saturate(1.08);
}

.custom-section-richolson-playground.ro-play-site button:disabled {
  cursor: not-allowed;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-card,
.custom-section-richolson-playground.ro-play-site .ro-harness-builder {
  background-image: radial-gradient(color-mix(in oklab, var(--line) 42%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  box-shadow: inset 0 1px 0 color-mix(in oklab, var(--accent) 14%, transparent), 0 32px 72px -60px rgb(0 0 0 / 0.78);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-takeaway {
  box-shadow: inset 0 1px 0 color-mix(in oklab, var(--accent) 10%, transparent);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-stage {
  background-image: radial-gradient(color-mix(in oklab, var(--line) 50%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-machine {
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-ring {
  min-width: 0;
  border: 1.5px dashed var(--line);
  background: transparent;
  opacity: .52;
  transition: border-color .16s ease, background-color .16s ease, box-shadow .16s ease, opacity .16s ease;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-ring[data-active="true"] {
  border: 2px solid var(--accent);
  background: color-mix(in oklab, var(--accent) 7%, transparent);
  box-shadow: 0 0 26px -8px var(--accent-ghost);
  opacity: 1;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-ring[data-active="false"] > [data-legend] {
  color: var(--muted);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-ring[data-active="true"] > [data-legend] {
  color: var(--accent);
}

.custom-section-richolson-playground.ro-play-site [data-core][data-active="false"] {
  border: 2px solid oklch(0.66 0.18 25);
  box-shadow: 0 0 30px -6px color-mix(in oklab, oklch(0.66 0.18 25) 44%, transparent);
}

.custom-section-richolson-playground.ro-play-site [data-core][data-active="true"] {
  border: 2px solid var(--accent);
  box-shadow: 0 0 30px -6px var(--accent-ghost);
}

.custom-section-richolson-playground.ro-play-site [data-core][data-active="false"] > [data-kicker] {
  color: oklch(0.66 0.18 25);
}

.custom-section-richolson-playground.ro-play-site [data-core][data-active="true"] > [data-kicker] {
  color: var(--accent);
}

.custom-section-richolson-playground.ro-play-site [data-tag="red"] {
  border: 1px solid color-mix(in oklab, oklch(0.66 0.18 25) 60%, var(--line));
  color: oklch(0.66 0.18 25);
  background: color-mix(in oklab, oklch(0.66 0.18 25) 10%, transparent);
}

.custom-section-richolson-playground.ro-play-site [data-tag="green"] {
  border: 1px solid color-mix(in oklab, var(--accent) 55%, var(--line));
  color: var(--accent);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
}

.custom-section-richolson-playground.ro-play-site [data-row] {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.custom-section-richolson-playground.ro-play-site [data-row][data-who="visitor"] {
  align-items: flex-end;
}

.custom-section-richolson-playground.ro-play-site [data-row][data-who="model"] {
  align-items: flex-start;
}

.custom-section-richolson-playground.ro-play-site [data-bubble] {
  max-width: 88%;
  padding: 12px 15px;
  font-size: .96rem;
  line-height: 1.5;
  border-radius: 15px;
}

.custom-section-richolson-playground.ro-play-site [data-bubble][data-who="visitor"] {
  background: var(--surface-2);
  color: var(--text);
  border-bottom-right-radius: 5px;
}

.custom-section-richolson-playground.ro-play-site [data-bubble][data-who="model"] {
  background: var(--code-bg);
  border: 1px solid var(--line);
  color: var(--text);
  border-bottom-left-radius: 5px;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-tick {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-tick[data-done="true"] {
  border-color: color-mix(in oklab, var(--accent) 55%, var(--line));
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  color: var(--accent);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-tick[data-active="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.custom-section-richolson-playground.ro-play-site [data-val] {
  color: var(--text);
}

.custom-section-richolson-playground.ro-play-site [data-val][data-ok="1"] {
  color: var(--accent);
}

.custom-section-richolson-playground.ro-play-site #ro-harness-run:disabled,
.custom-section-richolson-playground.ro-play-site #ro-harness-continue:disabled,
.custom-section-richolson-playground.ro-play-site #ro-harness-model:disabled,
.custom-section-richolson-playground.ro-play-site [data-harness-layer]:disabled {
  cursor: not-allowed;
  opacity: .52;
}

.custom-section-richolson-playground.ro-play-site #ro-harness-run:disabled,
.custom-section-richolson-playground.ro-play-site #ro-harness-continue:disabled {
  box-shadow: none;
  filter: grayscale(.35) saturate(.75);
  transform: none;
}

.custom-section-richolson-playground.ro-play-site [data-demo-active="true"] {
  border-color: color-mix(in oklab, var(--accent) 58%, var(--line));
  box-shadow: 0 24px 54px -46px var(--accent-ghost), inset 0 1px 0 color-mix(in oklab, var(--accent) 18%, transparent);
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-visual {
  width: min(82%, 360px);
  color: var(--text);
  font-family: var(--font-mono);
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-kicker {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-title {
  margin-bottom: 7px;
  font-family: var(--font-sans);
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.18;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-text {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: .72rem;
  line-height: 1.35;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-bars {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 10px;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-meter-label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: .56rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-meter {
  display: block;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-meter > span {
  display: block;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 16px -8px var(--accent-ghost);
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-meter[data-tone="warn"] > span {
  background: oklch(0.66 0.18 25);
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-meter[data-tone="needed"] > span {
  background: var(--engine-frontier);
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-meter[data-tone="maybe"] > span {
  background: var(--accent2);
  opacity: .75;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-pill {
  border: 1px solid color-mix(in oklab, var(--accent) 46%, var(--line));
  border-radius: 999px;
  padding: 3px 7px;
  color: var(--accent);
  font-size: .56rem;
  line-height: 1;
  white-space: nowrap;
}

.custom-section-richolson-playground.ro-play-site .ro-mini-demo-result {
  display: block;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: .74rem;
  line-height: 1.35;
}

.custom-section-richolson-playground.ro-play-site .ro-question-prompt-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  max-height: 112px;
  overflow-y: auto;
  padding-right: 2px;
}

.custom-section-richolson-playground.ro-play-site .ro-question-prompt {
  border: 1px solid color-mix(in oklab, var(--accent) 42%, var(--line));
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 8%, transparent);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .64rem;
  line-height: 1;
  padding: 8px 10px;
}

.custom-section-richolson-playground.ro-play-site .ro-question-prompt:hover,
.custom-section-richolson-playground.ro-play-site .ro-question-prompt:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--accent) 20%, transparent);
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.2;
  outline: none;
  padding: 10px 12px;
  transition: border-color .16s ease, box-shadow .16s ease;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-input::placeholder {
  color: color-mix(in oklab, var(--muted) 78%, transparent);
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--accent) 24%, transparent);
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-count {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .62rem;
  line-height: 1;
  padding: 7px 10px;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-btn:not(:disabled):hover {
  border-color: var(--accent);
  color: var(--accent);
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-btn:disabled {
  color: color-mix(in oklab, var(--muted) 54%, transparent);
  cursor: not-allowed;
  opacity: .58;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-match {
  border-radius: 4px;
  background: color-mix(in oklab, var(--engine-frontier) 35%, transparent);
  color: var(--text);
  padding: 0 2px;
}

.custom-section-richolson-playground.ro-play-site .ro-source-search-match.is-active {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 0 16px -8px var(--accent-ghost);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in oklab, var(--surface) 76%, transparent);
  padding: 12px;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress-track {
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress-fill {
  position: relative;
  width: 0;
  height: 100%;
  overflow: hidden;
  border-radius: inherit;
  background: linear-gradient(90deg, color-mix(in oklab, var(--accent) 70%, transparent), var(--accent));
  box-shadow: 0 0 18px -4px var(--accent-ghost);
  transition: width .22s ease;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 38%;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, color-mix(in oklab, var(--on-accent) 48%, transparent), transparent);
  opacity: 0;
  transform: translateX(-120%);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="running"] .ro-harness-progress-fill {
  animation: ro-harness-progress-fill 1.15s ease-in-out infinite;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="running"] .ro-harness-progress-fill::after {
  animation: ro-harness-progress-strobe 1.05s ease-in-out infinite;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="needs_input"] {
  border-color: color-mix(in oklab, var(--accent) 60%, var(--line));
  box-shadow: 0 0 20px -14px var(--accent-ghost);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="complete"] {
  border-color: var(--accent);
  box-shadow: 0 0 22px -12px var(--accent-ghost);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="error"] {
  border-color: oklch(0.66 0.18 25);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress-step {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 6px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .58rem;
  line-height: 1;
  text-align: center;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress-step[data-active="true"] {
  border-color: color-mix(in oklab, var(--accent) 58%, var(--line));
  color: var(--accent);
  background: color-mix(in oklab, var(--accent) 9%, transparent);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-progress-step[data-done="true"] {
  border-color: var(--accent);
  color: var(--on-accent);
  background: var(--accent);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-reply-panel {
  border: 1px solid color-mix(in oklab, var(--accent) 58%, var(--line));
  border-radius: 14px;
  background: color-mix(in oklab, var(--accent) 7%, var(--surface));
  padding: 14px;
  box-shadow: 0 0 22px -16px var(--accent-ghost);
}

.custom-section-richolson-playground.ro-play-site .ro-harness-telemetry-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-telemetry-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  padding: 16px;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-telemetry-panel li {
  padding: 10px 12px;
  font-size: .84rem;
  line-height: 1.45;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-telemetry-panel li span:first-child {
  margin-bottom: 2px;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-generated-graphic {
  overflow: hidden;
  border-radius: 16px;
}

.custom-section-richolson-playground.ro-play-site .ro-harness-generated-graphic svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 238px;
  font-family: var(--font-mono);
  background:
    radial-gradient(color-mix(in oklab, var(--line) 75%, transparent) 1px, transparent 1px),
    var(--bg);
  background-size: 22px 22px;
}

@media (min-width: 820px) {
  .custom-section-richolson-playground.ro-play-site .ro-harness-telemetry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .custom-section-richolson-playground.ro-play-site .ro-harness-generated-graphic,
  .custom-section-richolson-playground.ro-play-site .ro-harness-telemetry-safety {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .custom-section-richolson-playground.ro-play-site .ro-harness-ring {
    padding: 20px;
  }
}

@keyframes ro-blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes ro-pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0; }
  20% { opacity: .72; }
  70% { transform: scale(1.09); opacity: 0; }
}
@keyframes ro-lane-fast { 0% { transform: scaleX(.04); } 55%, 100% { transform: scaleX(1); } }
@keyframes ro-lane-slow { 0% { transform: scaleX(.04); } 80%, 100% { transform: scaleX(.7); } }
@keyframes ro-scan { 0% { transform: translateY(-100%); } 100% { transform: translateY(420%); } }
@keyframes ro-harness-progress-fill {
  0%, 100% { opacity: .78; }
  50% { opacity: 1; }
}
@keyframes ro-harness-progress-strobe {
  0% { opacity: 0; transform: translateX(-120%); }
  18% { opacity: .64; }
  52% { opacity: .28; }
  100% { opacity: 0; transform: translateX(220%); }
}

.custom-section-richolson-playground.ro-play-site .ro-blink { animation: ro-blink 1.1s step-end infinite; }
.custom-section-richolson-playground.ro-play-site .ro-pulse { position: relative; }
.custom-section-richolson-playground.ro-play-site .ro-pulse::after {
  position: absolute;
  inset: 0;
  border: 1px solid var(--accent);
  border-radius: inherit;
  content: "";
  pointer-events: none;
  transform-origin: center;
  will-change: transform, opacity;
  animation: ro-pulse-ring 2.4s ease-out infinite;
}
.custom-section-richolson-playground.ro-play-site .ro-lane-fast,
.custom-section-richolson-playground.ro-play-site .ro-lane-slow {
  transform-origin: left center;
  will-change: transform;
}
.custom-section-richolson-playground.ro-play-site .ro-lane-fast { animation: ro-lane-fast 2.8s ease-out infinite; }
.custom-section-richolson-playground.ro-play-site .ro-lane-slow { animation: ro-lane-slow 2.8s linear infinite; }
.custom-section-richolson-playground.ro-play-site .ro-scan { animation: ro-scan 3.2s linear infinite; }

@media (prefers-reduced-motion: reduce) {
  .custom-section-richolson-playground.ro-play-site .ro-pulse::after,
  .custom-section-richolson-playground.ro-play-site .ro-lane-fast,
  .custom-section-richolson-playground.ro-play-site .ro-lane-slow,
  .custom-section-richolson-playground.ro-play-site .ro-scan,
  .custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="running"] .ro-harness-progress-fill,
  .custom-section-richolson-playground.ro-play-site .ro-harness-progress[data-state="running"] .ro-harness-progress-fill::after { animation: none; }

  .custom-section-richolson-playground.ro-play-site button:not(:disabled),
  .custom-section-richolson-playground.ro-play-site a[href][class*="rounded"] {
    transition-duration: .01ms;
  }
}

/* Spot-the-Bot answer panel states (set by section.js) */
.custom-section-richolson-playground.ro-play-site .ro-pick { transition: border-color .18s ease, background .18s ease, transform .18s ease; }
.custom-section-richolson-playground.ro-play-site .ro-pick[data-state="chosen"]  { border-color: var(--accent); }
.custom-section-richolson-playground.ro-play-site .ro-pick[data-state="correct"] { border-color: var(--engine-local); background: color-mix(in oklab, var(--engine-local) 14%, transparent); }
.custom-section-richolson-playground.ro-play-site .ro-pick[data-state="wrong"]   { border-color: oklch(0.66 0.18 25); background: color-mix(in oklab, oklch(0.66 0.18 25) 12%, transparent); }