/* Scene 14 — What this U-Net gets right, and what it doesn't.

   Layout:
     hero
     gallery
       row .s14-row-best   (best-3 cards, sorted by accuracy desc)
       row .s14-row-worst  (worst-5 cards, sorted by accuracy asc)
     confusion-matrix section (revealed at step 2)
     caption + controls */

.s14-root .s14-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.s14-hero h1 { font-size: 28px; }
.s14-hero .lede em {
  font-style: italic;
  color: var(--ink);
}

/* ---------------------------------------------------------------------------
   Gallery: best row + worst row
   --------------------------------------------------------------------------- */

.s14-gallery {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.s14-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 12px 14px;
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
}

.s14-row-best  { border-left: 3px solid var(--cnn-pos); }
.s14-row-worst { border-left: 3px solid var(--cnn-neg); }

.s14-row-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  font-family: "SF Mono", Menlo, monospace;
}

.s14-row-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------------------------------------------------------------------
   Gallery cards
   --------------------------------------------------------------------------- */

.s14-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
  flex: 1 1 280px;
  min-width: 240px;
  max-width: 470px;
}

.s14-card-best  { border-top: 2px solid color-mix(in srgb, var(--cnn-pos) 80%, transparent); }
.s14-card-worst { border-top: 2px solid color-mix(in srgb, var(--cnn-neg) 80%, transparent); }

.s14-card-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.04em;
}

.s14-card-tag {
  font-family: "SF Mono", Menlo, monospace;
  font-size: 10px;
  text-transform: uppercase;
  color: var(--ink-secondary);
  background: var(--card-bg);
  padding: 1px 6px;
  border-radius: 2px;
  border: 1px solid var(--rule);
}

.s14-card-idx {
  font-family: "SF Mono", Menlo, monospace;
  font-size: 11px;
  color: var(--ink-secondary);
}

.s14-card-acc {
  margin-left: auto;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  font-weight: 600;
}
.s14-card-acc.s14-acc-good { color: var(--cnn-pos); }
.s14-card-acc.s14-acc-bad  { color: var(--cnn-neg); }

/* ---------------------------------------------------------------------------
   Visual triple (input | GT | pred). Only present for samples whose
   pixel data is in scene64.samples.
   --------------------------------------------------------------------------- */

.s14-card-vis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.s14-vis-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.s14-vis-label {
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  font-family: "SF Mono", Menlo, monospace;
}

.s14-vis-host {
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--card-bg);
  padding: 0;
}
.s14-vis-host canvas { display: block; image-rendering: pixelated; }

/* ---------------------------------------------------------------------------
   Metadata-only fallback (when sample pixels aren't inline)
   --------------------------------------------------------------------------- */

.s14-card-meta {
  padding: 12px;
  background: var(--card-bg);
  border: 1px dashed var(--rule);
  border-radius: 3px;
  text-align: center;
}
.s14-meta-note {
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-style: italic;
  font-size: 12.5px;
  color: var(--ink-secondary);
  line-height: 1.45;
}

/* ---------------------------------------------------------------------------
   Annotation block (revealed at step >= 1)
   --------------------------------------------------------------------------- */

.s14-card-ann {
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 220ms ease-out, max-height 320ms ease-out;
}
.s14-gallery.s14-annotations-on .s14-card-ann {
  opacity: 1;
  max-height: 360px;
}

.s14-ann-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.s14-ann-tag {
  font-family: "SF Mono", Menlo, monospace;
  font-size: 10px;
  letter-spacing: 0.02em;
  padding: 1px 6px;
  background: color-mix(in srgb, var(--cnn-accent) 25%, var(--card-bg));
  border: 1px solid color-mix(in srgb, var(--cnn-accent) 50%, var(--rule));
  border-radius: 2px;
  color: var(--ink);
}

.s14-ann-notes-empty {
  font-style: italic;
  font-size: 11.5px;
  color: var(--ink-secondary);
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
}

/* Per-class accuracy bars */
.s14-ann-bars {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 2px;
}

.s14-bar-row {
  display: grid;
  grid-template-columns: 56px 1fr 50px;
  gap: 6px;
  align-items: center;
}

.s14-bar-name {
  font-family: "SF Mono", Menlo, monospace;
  font-size: 10px;
  text-transform: lowercase;
  letter-spacing: 0;
}

.s14-bar-track {
  height: 8px;
  background: var(--rule);
  border-radius: 2px;
  overflow: hidden;
}

.s14-bar-fill {
  height: 100%;
  background: currentColor;
  transition: width 320ms ease-out;
}

.s14-bar-val {
  font-family: "SF Mono", Menlo, monospace;
  font-size: 10px;
  color: var(--ink-secondary);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ---------------------------------------------------------------------------
   Confusion matrix section
   --------------------------------------------------------------------------- */

.s14-cm-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 240ms ease-out, max-height 360ms ease-out;
}
.s14-cm-section.s14-visible {
  opacity: 1;
  max-height: 700px;
}

.s14-cm-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.s14-cm-title {
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-weight: 500;
  font-size: 16px;
  margin: 0;
  color: var(--ink);
}

.s14-cm-sub {
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-style: italic;
  font-size: 13px;
  color: var(--ink-secondary);
  margin: 0;
}

.s14-cm-host {
  margin: 4px auto 0;
}
.s14-cm-host canvas { display: block; }

/* ---------------------------------------------------------------------------
   Caption / controls
   --------------------------------------------------------------------------- */

.s14-caption {
  margin: 4px 4px 0;
  text-align: center;
  font-size: 14.5px;
}

.s14-controls { margin-top: 6px; }

/* ---------------------------------------------------------------------------
   Responsive
   --------------------------------------------------------------------------- */

@media (max-width: 760px) {
  .s14-card-vis { grid-template-columns: 1fr; }
  .s14-card { max-width: none; }
}