/* Shared Learning Machines styles for compact participant tools. */
.tool-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.tool-hero {
  display: grid;
  gap: 14px;
  margin-bottom: 24px;
}

.tool-kicker {
  margin: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tool-title {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.1rem, 6vw, 4.6rem);
  line-height: 0.96;
}

.tool-dek {
  max-width: 840px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.tool-idea {
  width: fit-content;
  max-width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--warm);
  font-weight: 800;
  box-shadow: var(--shadow-sm);
}

.tool-grid-2,
.tool-grid-3 {
  display: grid;
  gap: 16px;
  align-items: start;
}

.tool-grid-2 {
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.35fr);
}

.tool-grid-3 {
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1.35fr) minmax(250px, 0.9fr);
}

.lab-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.lab-pad {
  padding: 18px;
}

.lab-panel h2,
.lab-panel h3 {
  margin: 0 0 10px;
  letter-spacing: 0;
}

.lab-panel p {
  color: var(--muted);
}

.mini-label {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.small-muted {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.choice-list {
  display: grid;
  gap: 9px;
}

.choice-button,
.chip-button,
.tool-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
}

.choice-button {
  width: 100%;
  padding: 12px;
  background: var(--surface-2);
  color: var(--ink);
  text-align: left;
}

.choice-button:hover,
.choice-button:focus-visible,
.choice-button.active {
  border-color: var(--accent);
  outline: none;
}

.choice-button.active {
  background: color-mix(in oklab, var(--accent) 14%, var(--surface));
}

.choice-button strong {
  display: block;
  margin-bottom: 4px;
}

.choice-button span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-button {
  padding: 8px 10px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.9rem;
}

.chip-button.active {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 14%, var(--surface));
  color: var(--ink);
}

.tool-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 13px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 800;
}

.tool-button.secondary {
  background: transparent;
  color: var(--ink);
}

.tool-button:focus-visible,
.chip-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.table-wrap {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: 12px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
  text-align: left;
}

.comparison-table th {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.version-mark {
  display: inline-grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 800;
}

.output-card,
.frame-card,
.scene-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-2);
  overflow: hidden;
}

.output-visual,
.frame-visual,
.scene-visual {
  min-height: 180px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(94,234,212,0.12), rgba(192,132,252,0.12)),
    var(--code-bg);
}

.output-caption,
.frame-caption,
.scene-caption {
  padding: 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.evidence-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.evidence-list li {
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--ink-dim);
}

.note-box {
  width: 100%;
  min-height: 92px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--ink);
  font: 0.92rem/1.45 var(--font-body);
  padding: 11px;
}

.note-box:focus {
  outline: none;
  border-color: var(--accent);
}

.stack {
  display: grid;
  gap: 14px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.frame-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(76px, 1fr));
  gap: 8px;
}

.frame-thumb {
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--ink);
  cursor: pointer;
  overflow: hidden;
}

.frame-thumb.active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 2px color-mix(in oklab, var(--accent) 42%, transparent);
}

.frame-thumb svg,
.scene-visual svg,
.output-visual svg,
.frame-visual svg {
  width: 100%;
  height: 100%;
  display: block;
}

.scrub-range {
  width: 100%;
  accent-color: var(--accent);
}

.overlay-stage {
  display: grid;
  min-height: 360px;
  place-items: center;
  position: relative;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    var(--code-bg);
  background-size: 24px 24px;
  overflow: hidden;
}

.overlay-frame {
  position: absolute;
  inset: 24px;
  display: grid;
  place-items: center;
}

.overlay-frame img,
.overlay-frame svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.overlay-current {
  opacity: 1;
}

.overlay-previous {
  opacity: 0;
  mix-blend-mode: screen;
}

.overlay-stage.onion .overlay-previous {
  opacity: 0.48;
}

.overlay-stage.diff .overlay-current {
  mix-blend-mode: difference;
  filter: contrast(1.25) saturate(1.3);
}

.claim-grid {
  display: grid;
  gap: 10px;
}

.claim-grid label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.meter-row {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 10px;
  align-items: center;
  margin: 9px 0;
}

.meter-track {
  height: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

@media (max-width: 980px) {
  .tool-grid-2,
  .tool-grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .tool-shell {
    width: min(100% - 24px, 1180px);
    padding-top: 22px;
  }

  .overlay-stage {
    min-height: 260px;
  }

  .meter-row {
    grid-template-columns: 1fr;
  }
}

@media print {
  .nav,
  .button-row,
  .choice-list,
  .chip-row,
  input[type="file"],
  input[type="range"] {
    display: none !important;
  }

  .tool-shell {
    width: 100%;
    padding: 0;
  }

  .lab-panel,
  .output-card,
  .frame-card,
  .scene-card {
    box-shadow: none;
  }
}