/* Styles for the PGD-anatomy figure (Figure 1 of the toy-models post), ported
   from the aisap site and scoped under .pgd-anatomy so nothing leaks into or
   from the blog's global stylesheet. Fonts follow the blog's body font. */

.pgd-anatomy {
  --pgd-surface-1: #ffffff;
  --pgd-ink: #1a1a1a;
  --pgd-ink2: #4a4744;
  --pgd-muted: #666666;
  --pgd-grid: #ece9e2;
  --pgd-axis: #d8d5cd;
  --pgd-border: #e0e0e0;
  --pgd-radius: 6px;
  --pgd-font: var(--font-body, 'Iowan Old Style', 'Iowan Old Style BT', 'Source Serif 4', Georgia, serif);

  /* the blog theme styles figure > div as a centering flexbox — this widget
     needs to be a plain full-width block inside the figure */
  display: block;
  width: 100%;
  color: var(--pgd-ink);
  font-family: var(--pgd-font);
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
}

.pgd-anatomy .card {
  background: var(--pgd-surface-1);
  border: 1px solid var(--pgd-border);
  border-radius: var(--pgd-radius);
  padding: 20px;
}
.pgd-anatomy .card.panel {
  padding: 0;
  overflow: hidden;
}
.pgd-anatomy .stage-full {
  width: 100%;
  line-height: 0;
}
.pgd-anatomy .panel-lower {
  padding: 20px 24px 24px;
}

.pgd-anatomy .stage {
  width: 100%;
  height: auto;
  display: block;
  background: var(--pgd-surface-1);
  touch-action: none;
}

/* Clean custom range slider: thin rounded track, small thumb. The filled
   portion is driven by an inline --pct on WebKit; Firefox uses its native
   ::-moz-range-progress. */
.pgd-anatomy input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 16px;
  background: transparent;
  cursor: pointer;
  margin: 0;
}
.pgd-anatomy input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 999px;
  background:
    linear-gradient(var(--pgd-axis), var(--pgd-axis)) left / var(--pct, 0%)
      100% no-repeat,
    var(--pgd-grid);
}
.pgd-anatomy input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--pgd-surface-1);
  border: 1px solid var(--pgd-axis);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  transition: transform 0.1s ease;
}
.pgd-anatomy input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.12);
}
.pgd-anatomy input[type="range"]:focus-visible {
  outline: none;
}
.pgd-anatomy input[type="range"]:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.18);
}
.pgd-anatomy input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: var(--pgd-grid);
}
.pgd-anatomy input[type="range"]::-moz-range-progress {
  height: 4px;
  border-radius: 999px;
  background: var(--pgd-axis);
}
.pgd-anatomy input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--pgd-surface-1);
  border: 1px solid var(--pgd-axis);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

/* Control strip under the plot: grid so labels share a row and sliders share
   a row — exactly level regardless of control heights. */
.pgd-anatomy .controls-grid {
  padding: 18px 2px 0;
  display: grid;
  grid-template-columns: auto auto minmax(160px, 2fr) minmax(140px, 1fr);
  column-gap: 20px;
  row-gap: 6px;
  align-items: center;
}
.pgd-anatomy .ctl-label {
  font-family: var(--pgd-font);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--pgd-ink2);
}
.pgd-anatomy .ctl-label .val {
  color: var(--pgd-ink);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}
.pgd-anatomy .ctl-new { grid-area: 2 / 1; }
.pgd-anatomy .ctl-play { grid-area: 2 / 2; }
.pgd-anatomy .ctl-steps-label { grid-area: 1 / 3; }
.pgd-anatomy .ctl-scrub { grid-area: 2 / 3; }
.pgd-anatomy .ctl-eps-label { grid-area: 1 / 4; }
.pgd-anatomy .ctl-eps { grid-area: 2 / 4; }

@media (max-width: 640px) {
  .pgd-anatomy .controls-grid {
    grid-template-columns: auto 1fr;
  }
  .pgd-anatomy .ctl-new { grid-area: 1 / 2; justify-self: start; margin-bottom: 12px; }
  .pgd-anatomy .ctl-steps-label { grid-area: 2 / 2; }
  .pgd-anatomy .ctl-play { grid-area: 3 / 1; }
  .pgd-anatomy .ctl-scrub { grid-area: 3 / 2; }
  .pgd-anatomy .ctl-eps-label { grid-area: 4 / 2; margin-top: 12px; }
  .pgd-anatomy .ctl-eps { grid-area: 5 / 2; }
}

.pgd-anatomy button.btn {
  border: 1px solid var(--pgd-ink);
  background: transparent;
  color: var(--pgd-ink);
  border-radius: var(--pgd-radius);
  padding: 9px 16px;
  font-family: var(--pgd-font);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}
.pgd-anatomy button.btn:hover {
  background: var(--pgd-ink);
  border-color: var(--pgd-ink);
  color: #fff;
}
.pgd-anatomy button.btn.primary {
  background: var(--pgd-surface-1);
  border: 1px solid var(--pgd-axis);
  color: var(--pgd-ink);
}
.pgd-anatomy button.btn.primary:hover {
  background: var(--pgd-surface-1);
  border-color: var(--pgd-ink2);
  color: var(--pgd-ink);
}
.pgd-anatomy button.btn:disabled {
  opacity: 0.4;
  cursor: default;
}
.pgd-anatomy button.btn.subtle {
  font-family: var(--pgd-font);
  font-size: 0.8rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--pgd-ink2);
  border: 1px solid var(--pgd-axis);
  padding: 3px 12px;
}
.pgd-anatomy button.btn.subtle:hover {
  background: transparent;
  border-color: var(--pgd-ink2);
  color: var(--pgd-ink);
}

.pgd-anatomy .scrub {
  flex: 1;
  min-width: 180px;
}
/* Outlined playback button — transparent background with a clear black
   ring and icon (the faint white-on-white primary style was unclear).
   Selector carries button.btn so it outranks the .btn.primary rules above. */
.pgd-anatomy button.btn.play-btn {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 50%;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1.5px solid var(--pgd-ink);
  color: var(--pgd-ink);
}

.pgd-anatomy button.btn.play-btn:hover {
  background: var(--pgd-ink);
  border-color: var(--pgd-ink);
  color: #fff;
}

.pgd-anatomy .play-btn svg {
  width: 15px;
  height: 15px;
  display: block;
}

.pgd-anatomy .train-bar {
  height: 6px;
  background: var(--pgd-grid);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 10px;
}
.pgd-anatomy .train-bar > div {
  height: 100%;
  background: var(--pgd-ink2);
  transition: width 0.1s linear;
}
.pgd-anatomy .notice {
  font-family: var(--pgd-font);
  font-size: 0.95rem;
  color: var(--pgd-ink2);
  background: rgba(128, 0, 0, 0.04);
  border: 1px solid var(--pgd-border);
  border-radius: var(--pgd-radius);
  padding: 16px 18px;
}