/* Demo-specific styles: temperature, probability bars, the continuation box,
   and the interpolation cloud. All sizes are fixed where content changes
   length, so nothing jumps while you are teaching. */

/* ---------- temperature control ---------- */

.temp-row {
  display: flex;
  align-items: center;
  gap: .9rem;
  width: 100%;
}

.temp-row label {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--pencil);
  white-space: nowrap;
}

.temp-row input[type="range"] {
  flex: 1 1 16rem;
  max-width: 22rem;
  accent-color: var(--pen);
  height: 1.4rem;
}

.temp-readout {
  font-family: var(--mono);
  font-size: .92rem;
  color: var(--ink);
  min-width: 3ch;
  text-align: right;
  white-space: nowrap;
}

#scale-readout { min-width: 13ch; }

.temp-row input[type="range"]:focus-visible {
  outline: 2px solid var(--pen);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- probability bars ---------- */

.roll-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 10.5rem;
  gap: 1.5rem;
  align-items: start;
}

.bars { display: flex; flex-direction: column; gap: .45rem; min-width: 0; }

.bar-row {
  display: grid;
  grid-template-columns: 2ch minmax(0, 1fr) 4rem;
  gap: .7rem;
  align-items: center;
}

.bar-char {
  font-family: var(--mono);
  font-size: .95rem;
  color: var(--ink-soft);
  background: none;
  padding: 0;
  text-align: center;
}

.bar-track {
  display: block;
  height: .8rem;
  background: var(--ground);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  overflow: hidden;
}

.bar-fill {
  display: block;
  height: 100%;
  background: var(--pen);
  border-radius: 1px;
  transition: width .25s ease;
  transform-origin: left;
  animation: grow .35s ease;
}

@keyframes grow { from { transform: scaleX(0); } }

.bar-pct {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--pencil);
  text-align: right;
  white-space: nowrap;
}

.bar-pct.is-picked { font-weight: 700; color: var(--keep); }

.bar-char.is-picked,
.bar-fill.is-picked { background: var(--keep); color: var(--keep); }

.bar-char.is-picked {
  font-weight: 700;
  color: var(--keep);
  background: var(--keep-wash);
  border-radius: 3px;
}

.roll-result {
  border-left: 1px solid var(--rule);
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  min-height: 12rem;
}

.picked-char {
  font-family: var(--mono);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--keep);
  background: none;
  padding: 0;
  animation: pick-pop .25s ease-out;
}

@keyframes pick-pop { from { transform: scale(.55); opacity: 0; } }

.demo-note {
  margin: .2rem 0 0 !important;
  font-size: .8rem;
  color: var(--pencil) !important;
  max-width: none !important;
}

/* ---------- continuation output ---------- */

.continue-out {
  background: var(--ground);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: .9rem 1rem 1rem;
  font-family: var(--mono);
  font-size: .92rem;
  line-height: 1.65;
  color: var(--ink);
  overflow-wrap: break-word;
}

.continue-out .prefix { color: var(--pencil); }

.continue-out .continuation {
  color: var(--ink);
  background: var(--pen-wash);
  border-radius: 2px;
}

.continue-out .cursor {
  display: inline-block;
  width: .55em;
  height: 1.1em;
  margin-left: .15em;
  vertical-align: text-bottom;
  background: var(--pen);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- interpolation cloud ---------- */

.cloud-stage {
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--ground);
  padding: .5rem;
  overflow-x: auto;
}

#cloud-svg {
  display: block;
  width: 100%;
  min-width: 34rem;
  height: auto;
}

.cloud-label {
  font-family: var(--mono);
  font-size: .9rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  fill: var(--pencil);
  paint-order: stroke;
  stroke: var(--ground);
  stroke-width: 4px;
  stroke-linejoin: round;
}

.pt-big { fill: var(--pencil-faint); opacity: .85; }
.pt-small { fill: var(--pen); opacity: .85; }
.pt-query { fill: var(--keep); opacity: .95; }

.pt-query { animation: land .5s ease; transform-box: fill-box; transform-origin: center; }

@keyframes land {
  0% { transform: scale(0); opacity: 0; }
  70% { transform: scale(1.6); }
  100% { transform: scale(1); opacity: .95; }
}

@media (max-width: 40rem) {
  .roll-grid { grid-template-columns: minmax(0, 1fr); }
  .roll-result {
    border-left: none;
    border-top: 1px solid var(--rule);
    padding-left: 0;
    padding-top: 1rem;
    min-height: 0;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: .5rem 1.2rem;
  }
  .picked-char { font-size: 2.2rem; }
  .roll-result .subhead { width: 100%; }
}

/* ---------- tokenizer chips (Beat 2) ---------- */

.tok-count {
  margin: 0 0 .6rem !important;
  font-size: .9rem;
  color: var(--ink-soft) !important;
}

.tok-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.tok {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: .1rem;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  padding: .25rem .45rem .2rem;
}

.tok-piece {
  font-family: var(--mono);
  font-size: .88rem;
  color: var(--ink);
  white-space: pre;
}

.tok-id {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--pencil);
}

/* ---------- training ladder (Beat 4) ---------- */

.train-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.loss-ladder { display: flex; flex-direction: column; gap: .5rem; }

.loss-row {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) 6.5rem;
  gap: .6rem;
  align-items: center;
  opacity: .85;
}

.loss-row.is-current { opacity: 1; }

.loss-label {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--pencil);
  text-align: right;
}

.loss-bar { background: var(--pencil); }
.loss-row.is-current .loss-bar { background: var(--pen); }

.loss-bits {
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.train-sample {
  border-left: 1px solid var(--rule);
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.train-text {
  margin: 0 !important;
  font-family: var(--mono);
  font-size: .92rem;
  line-height: 1.65;
  color: var(--ink) !important;
  background: var(--ground);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: .9rem 1rem;
  overflow-wrap: break-word;
}

/* ---------- citation exercise (Beat 6) ---------- */

.cite-paragraph p {
  font-family: var(--serif);
  font-size: 1.04rem;
  line-height: 1.7;
}

.cite-ref {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--pen);
  background: none;
  border: none;
  border-bottom: 1px dotted var(--pen);
  padding: 0;
  cursor: default;
}

.cite-list {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .7rem;
}

.cite-card {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rule-strong);
  border-radius: 0 3px 3px 0;
  background: var(--ground);
  padding: .8rem 1rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.cite-card.is-right { border-left-color: var(--keep); }
.cite-card.is-wrong { border-left-color: var(--pen-bright); }
.cite-card.is-unanswered { border-left-color: var(--pencil-faint); }
.cite-card.is-flash { border-left-color: var(--pen); background: var(--pen-wash); }

.cite-text { margin: 0 !important; font-size: .9rem; color: var(--ink) !important; }

.cite-marks { display: flex; gap: .5rem; }

.cite-marks .chip.is-chosen {
  color: var(--pen);
  border-color: var(--pen);
  background: var(--pen-wash);
}

.cite-verdict {
  margin: 0 !important;
  font-size: .84rem;
  color: var(--ink-soft) !important;
  max-width: none !important;
}

.cite-card.is-right .cite-verdict { color: var(--keep) !important; }
.cite-card.is-wrong .cite-verdict { color: var(--ink) !important; }

/* ---------- scale cards (Beat 7) ---------- */

.scale-cards {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13.5rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}

.scale-card {
  background: var(--surface);
  padding: 1rem 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
  opacity: .78;
  transition: opacity .25s ease;
}

.scale-card.is-on { opacity: 1; }

.scale-era {
  font-family: var(--mono);
  font-size: .6rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--pen);
}

.scale-card strong { font-size: .95rem; line-height: 1.3; }

.scale-card p {
  margin: 0 !important;
  font-size: .82rem;
  color: var(--ink-soft) !important;
  max-width: none !important;
}

/* ---------- foundation model cards (Beat 8) ---------- */

.fm-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}

.fm-card svg.fm-pipe {
  display: block;
  width: 100%;
  height: auto;
  padding: .5rem .75rem .1rem;
}

.pipe-arrow { stroke: var(--pen); stroke-width: 2.5; }
.pipe-arrowhead { fill: var(--pen); }
.pipe-backbone { stroke: var(--rule-strong); }
.pipe-chip { fill: var(--surface); stroke: var(--rule-strong); }
.pipe-block-rect { fill: var(--pen-wash); stroke: var(--pen); }
.pipe-block-txt { font-family: var(--mono); font-size: 13px; font-weight: 600; fill: var(--pen); text-anchor: middle; }
.pipe-sub { font-family: var(--mono); font-size: 10.5px; fill: var(--pencil); text-anchor: middle; }
.pipe-txt { font-family: var(--mono); font-size: 12.5px; fill: var(--ink-soft); text-anchor: middle; }
.pipe-letter { font-family: var(--mono); font-size: 11px; fill: var(--ink); text-anchor: middle; }
.pipe-rank { font-family: var(--mono); font-size: 12px; fill: var(--ink-soft); }
.pipe-out-chip { fill: var(--keep-wash); stroke: var(--keep); }
.pipe-out-txt { font-family: var(--mono); font-size: 12.5px; font-weight: 700; fill: var(--keep); text-anchor: middle; }
.pipe-io-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; fill: var(--pencil); }
.pipe-cap { font-family: var(--mono); font-size: 11px; fill: var(--pencil); }
.pipe-bead { fill: var(--surface); stroke: var(--rule-strong); }
.pipe-ribbon { fill: none; stroke: var(--keep); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
.pipe-node { fill: var(--keep-wash); stroke: var(--keep); }
.pipe-edge { stroke: var(--pen); stroke-width: 1.5; opacity: .45; }
.pipe-cell { fill: var(--pen); stroke: var(--rule-strong); }
.pipe-cell-out { fill: var(--keep-wash); stroke: var(--keep); }
.pipe-letter-out { font-family: var(--mono); font-size: 11px; font-weight: 700; fill: var(--keep); text-anchor: middle; }
.pipe-bar { fill: var(--pen); }

.fm-card {
  background: var(--surface);
  padding: 0;
}

.fm-card summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .2rem;
  position: relative;
  padding-right: 2.2rem;
}

.fm-card summary::after,
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  color: var(--pencil);
}

.fm-card[open] summary::after,
.faq-item[open] summary::after { content: "\2212"; }

.fm-card summary::-webkit-details-marker { display: none; }
.fm-card summary:hover { background: var(--pen-wash); }

.fm-card summary strong { font-size: 1.02rem; }

.fm-card summary span {
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--pencil-faint);
}

.fm-card[open] summary { border-bottom: 1px solid var(--rule); }

.fm-card > p {
  margin: .8rem 1.1rem 0 !important;
  font-size: .88rem;
  color: var(--ink-soft) !important;
  max-width: none !important;
}

.fm-card > p:last-of-type { margin-bottom: 1rem !important; }

.fm-io {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--pen);
}

.fm-idea {
  font-family: var(--serif) !important;
  font-style: italic;
  color: var(--pencil) !important;
}

/* ---------- quiz (Beat 9) ---------- */

.quiz { display: flex; flex-direction: column; gap: 1rem; margin-top: .4rem; }

.quiz-q {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rule-strong);
  border-radius: 0 3px 3px 0;
  padding: .9rem 1.1rem;
  background: var(--ground);
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.quiz-q.is-right { border-left-color: var(--keep); }
.quiz-q.is-wrong { border-left-color: var(--pen-bright); }

.quiz-prompt { margin: 0 !important; font-size: .94rem; color: var(--ink) !important; max-width: none !important; }

.quiz-choices { display: flex; flex-wrap: wrap; gap: .5rem; }

.quiz-choices .chip.is-chosen {
  color: var(--pen);
  border-color: var(--pen);
  background: var(--pen-wash);
}

.quiz-choices .chip:disabled { cursor: default; opacity: .75; }
.quiz-choices .chip.is-chosen:disabled { opacity: 1; }

.quiz-verdict {
  margin: 0 !important;
  font-size: .86rem;
  color: var(--ink-soft) !important;
  max-width: none !important;
}

.quiz-q.is-right .quiz-verdict { color: var(--keep) !important; }
.quiz-q.is-wrong .quiz-verdict { color: var(--ink) !important; }

.quiz-choices .chip.is-answer {
  color: var(--keep);
  border-color: var(--keep);
  background: var(--keep-wash);
}

/* ---------- failure table (Beat 9) ---------- */

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface);
  box-shadow: var(--shadow);
  margin-top: 1.1rem;
  max-width: 48rem;
}

.table-scroll:focus-visible {
  outline: 2px solid var(--pen);
  outline-offset: 2px;
}

.beat-table { border-collapse: collapse; width: 100%; min-width: 34rem; }

.beat-table th, .beat-table td {
  text-align: left;
  vertical-align: top;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--rule);
  font-size: .88rem;
}

.beat-table thead th {
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--pencil);
  font-weight: 500;
  border-bottom: 1px solid var(--rule-strong);
  white-space: nowrap;
}

.beat-table tbody tr:last-child th,
.beat-table tbody tr:last-child td { border-bottom: none; }

.beat-table td:first-child { color: var(--ink); }
.beat-table td { color: var(--ink-soft); }

/* ---------- appendix (Beat 10) ---------- */

.beat-h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2.4rem 0 0;
}

.glossary { margin: 1rem 0 0; max-width: 44rem; }

.glossary dt {
  font-weight: 600;
  color: var(--ink);
  margin-top: .8rem;
}

.glossary dt::after { content: ":"; color: var(--pencil-faint); font-weight: 400; }

.glossary dd {
  margin: 0;
  display: inline;
  color: var(--ink-soft);
  font-size: .96rem;
}

.faq { display: flex; flex-direction: column; gap: .6rem; margin-top: 1rem; max-width: 48rem; }

.faq-item {
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--surface);
  padding: 0;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: .8rem 1.1rem;
  font-weight: 600;
  font-size: .95rem;
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: var(--pen-wash); border-radius: 3px; }
.faq-item[open] summary { border-bottom: 1px solid var(--rule); }

.faq-item > p {
  margin: .8rem 1.1rem 1rem !important;
  font-size: .92rem;
  color: var(--ink-soft) !important;
  max-width: none !important;
}

.shelf {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  max-width: 44rem;
  color: var(--ink-soft);
}

.shelf li { margin: .35rem 0; font-size: .95rem; }

@media (max-width: 40rem) {
  .train-grid { grid-template-columns: minmax(0, 1fr); }
  .train-sample { border-left: none; border-top: 1px solid var(--rule); padding-left: 0; padding-top: 1rem; }
}

/* Spacing for control rows that follow a visual, and sizing so secondary
   chips hold their own next to a primary button. */
.cloud-stage + .demo-form,
.cite-list + .demo-form,
.quiz + .demo-form { margin-top: 1.1rem; }

.demo-form .chip { padding: .5rem .9rem; font-size: .74rem; }