/* Analogy chips in slide headers, and the explainer slides added for the script:
   s06b (every face is a point), s28b (GAN as an alternative), s30b (measure and use well).
   Kept in one file so it never collides with the partN.css files. */

/* ================================================================ analogy chip */

/* A short "think of it as" line beside the title. The spoken version is in docs/script.md.
   Phones hide it: the demos need the room. */
.slide-head:has(> .analogy) {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  grid-template-areas: "label chip" "title chip";
  align-items: center;
  column-gap: calc(var(--gap) * 2);
  row-gap: 8px;
  max-width: none;
}
.slide-head:has(> .analogy) > .part-label { grid-area: label; }
.slide-head:has(> .analogy) > h2 { grid-area: title; }
.analogy {
  grid-area: chip;
  justify-self: end;
  max-width: 34ch;
  margin: 0;
  padding: 6px 14px 7px;
  border: 2px dashed var(--accent);
  background: var(--bg-raised);
  color: var(--text);
  font-size: var(--fs-small);
  line-height: 1.3;
  transform: rotate(-0.6deg);
}
.analogy-tag {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: calc(var(--fs-label) * 0.8);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
@media (max-height: 900px) {
  .analogy { max-width: 40ch; font-size: calc(var(--fs-small) * 0.85); padding: 4px 12px 5px; }
}
@media (max-width: 760px) {
  .analogy { display: none; }
  .slide-head:has(> .analogy) { display: flex; }
}

/* ================================================================ s06b every face is a point */

.faces-body {
  gap: calc(var(--gap) * 3);
}
svg.faces-chart {
  flex: 0 0 auto;
  width: min(58vh, 46vw, 600px);
  height: min(58vh, 46vw, 600px);
  background: var(--bg-raised);
  border: 3px solid var(--line);
  box-shadow: 8px 8px 0 var(--accent);
  touch-action: none;
  cursor: crosshair;
}
.faces-axes line { stroke: var(--line); stroke-width: 3; }
.faces-arrow { fill: var(--line); }
.faces-axis-label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 26px;
  fill: var(--accent);
}
.faces-crowd { transition: opacity var(--t-med) var(--ease); }
.faces-walkline {
  stroke: var(--accent);
  stroke-width: 4;
  stroke-dasharray: 10 8;
  opacity: 0;
  transition: opacity var(--t-med) var(--ease);
}
.faces-you circle { fill: var(--stamp); stroke: var(--line); stroke-width: 3; }
.faces-you text { font-family: var(--font-head); font-weight: 700; font-size: 24px; fill: var(--line); }

.faces-side {
  flex: 0 1 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap);
  min-width: 0;
}
svg.faces-big {
  width: min(30vh, 260px);
  height: min(30vh, 260px);
  background: var(--bg-raised);
  border: 3px solid var(--line);
  box-shadow: 6px 6px 0 var(--line);
}
.faces-read {
  margin: 0;
  font-size: var(--fs-body);
}
.faces-read strong { color: var(--accent); }
.faces-walk {
  display: flex;
  gap: 6px;
  transition: opacity var(--t-med) var(--ease);
}
.faces-walk svg {
  width: min(9vh, 74px);
  height: min(9vh, 74px);
  background: var(--bg-raised);
  border: 2px solid var(--line);
}
.faces-note {
  margin: 0;
  max-width: 26ch;
  text-align: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.15;
  color: var(--accent);
  transition: opacity var(--t-med) var(--ease);
}

/* The build: crowd at step 1, walk at step 2, nameless axes at step 3. */
#s06b[data-step="0"] .faces-crowd { opacity: 0; }
#s06b:is([data-step="0"], [data-step="1"]) .faces-walk { opacity: 0; }
#s06b[data-step="2"] .faces-walkline { opacity: 1; }
#s06b:not([data-step="3"]) .faces-note { opacity: 0; }

@media (max-width: 760px) {
  .faces-body { flex-direction: column; gap: var(--gap); }
  svg.faces-chart { width: min(86vw, 44vh); height: min(86vw, 44vh); box-shadow: 5px 5px 0 var(--accent); }
  .faces-side { flex: 0 0 auto; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 8px 14px; }
  svg.faces-big { width: 22vh; height: 22vh; max-width: 120px; max-height: 120px; grid-row: span 2; }
  .faces-read { font-size: 15px; }
  .faces-walk { grid-column: 1 / -1; justify-content: center; }
  .faces-walk svg { width: 12vw; height: 12vw; }
  .faces-note { font-size: 16px; }
}

/* ================================================================ s30b measure it, then use it well */

.eval-body {
  align-items: flex-start;
  gap: calc(var(--gap) * 1.5);
}
.eval-card {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 22px;
  border: 3px solid var(--line);
  background: var(--bg-raised);
  box-shadow: 6px 6px 0 var(--accent);
  font-size: var(--fs-small);
}
.eval-card:first-child { flex-grow: 1.4; }
.eval-card h3 { margin: 0; color: var(--accent); }
.eval-card ul { margin: 0; padding-left: 1.1em; display: flex; flex-direction: column; gap: 10px; }
.eval-card strong { color: var(--accent); }
.eval-sub { margin: 0; line-height: 1.35; }
.eval-bars { display: flex; flex-direction: column; gap: 8px; }
.eval-row { display: grid; grid-template-columns: 9.5em 1fr 5.5em; align-items: center; gap: 10px; }
.eval-name { font-family: var(--font-mono); font-size: 0.85em; }
.eval-track { height: 18px; border: 2px solid var(--line); background: var(--bg-sunken); }
.eval-fill { display: block; height: 100%; width: 0; background: var(--accent); transition: width 600ms var(--ease); }
.eval-row[data-model^="vae"] .eval-fill { background: var(--lilac); }
.eval-db { text-align: right; font-weight: 700; }

@media (max-height: 900px) {
  .eval-card { padding: 12px 16px; gap: 8px; font-size: calc(var(--fs-small) * 0.9); }
}
@media (max-width: 1000px) {
  .eval-body { flex-direction: column; gap: 10px; overflow: auto; }
  .eval-card { padding: 10px 14px; gap: 6px; font-size: 14px; box-shadow: 4px 4px 0 var(--accent); }
  .eval-card ul { gap: 4px; }
  .eval-row { grid-template-columns: 8em 1fr 4.5em; }
  .eval-track { height: 12px; }
}
@media (max-width: 760px) {
  .eval-body { overflow: visible; }
  .eval-card { font-size: 13px; }
  .eval-card h3 { font-size: 18px; }
  .eval-card .eval-sub:last-child { display: none; }
  .eval-row { gap: 6px; }
  .eval-db { font-size: 13px; }
}

/* ================================================================ s28b GAN as an alternative? */

.gan-body {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--gap) * 3);
}
.gan-left {
  flex: 1 1 640px;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: calc(var(--gap) * 1.2);
}
svg.gan-diagram { display: block; width: 100%; height: auto; overflow: visible; }
.gan-shadow { fill: var(--line); }
.gan-face { fill: var(--bg-raised); stroke: var(--line); stroke-width: 3; }
.gan-box.gen .gan-face { fill: color-mix(in srgb, var(--coral) 18%, var(--bg-raised)); }
.gan-box.disc .gan-face { fill: color-mix(in srgb, var(--sky) 18%, var(--bg-raised)); }
.gan-box.noise .gan-face { fill: var(--bg-sunken); stroke-dasharray: 6 5; }
.gan-fake, .gan-real { image-rendering: pixelated; }
.gan-name, .gan-label, .gan-verdict, .gan-back-label { text-anchor: middle; dominant-baseline: middle; }
.gan-name { font-family: var(--font-head); font-weight: 700; font-size: 21px; fill: var(--text); }
.gan-label { font-family: var(--font-mono); font-size: 18px; fill: var(--text); }
.gan-label.small { font-size: 16px; fill: var(--text-soft); }
.gan-verdict { font-family: var(--font-head); font-weight: 700; font-size: 22px; fill: var(--accent); }
.gan-back-label { font-family: var(--font-head); font-weight: 700; font-size: 19px; fill: var(--coral); paint-order: stroke; stroke: var(--bg); stroke-width: 8px; stroke-linejoin: round; }
.gan-arrow { fill: none; stroke: var(--line); stroke-width: 3; }
.gan-arrow.back { stroke: var(--coral); stroke-width: 3.5; stroke-dasharray: 9 6; }
.gan-tip { fill: var(--line); }
.gan-tip.back { fill: var(--coral); }
.gan-lines { margin: 0; padding-left: 1.2em; display: flex; flex-direction: column; gap: 6px; font-size: var(--fs-body); line-height: 1.35; }
.gan-lines li::marker { color: var(--accent); }

.gan-right {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--gap) * 1.2);
}
.gan-fig { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.gan-grid {
  width: min(500px, 46vh);
  height: auto;
  image-rendering: pixelated;
  border: 3px solid var(--line);
  box-shadow: 6px 6px 0 var(--line);
  background: var(--bg-raised);
}
.gan-fig figcaption { max-width: 34ch; text-align: center; font-size: var(--fs-small); color: var(--text-soft); line-height: 1.35; }

@media (max-height: 900px), (max-width: 1500px) {
  .gan-body { gap: calc(var(--gap) * 2); }
  .gan-left { flex-basis: 540px; max-width: 600px; }
  .gan-grid { width: min(420px, 52vh); }
  .gan-lines { font-size: var(--fs-small); }
  .gan-fig figcaption { font-size: var(--fs-label); }
}
@media (max-width: 1000px) {
  .gan-body { flex-direction: column; gap: var(--gap); }
  .gan-left { flex-basis: auto; width: 100%; }
  .gan-grid { width: min(78vw, 300px); }
}
@media (max-width: 760px) {
  .gan-lines { font-size: 14px; }
}