/* Turn Lab (anatomy-of-a-turn post): token-driven only. Every colour is a site token, so light and dark
   themes follow the tokens and no theme-specific rule is needed. Loaded by the post itself, not site-wide. */
.turn-lab {
  --k: var(--color-text-muted);
  /* Minimum touch target: 44 CSS px at the default root size (WCAG 2.5.5). */
  --turn-lab-target: 2.75rem;
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  border: thin solid var(--color-border);
  border-radius: 0.5em;
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  line-height: 1.45;
  max-width: 100%;
  min-width: 0;
}
.turn-lab[hidden] { display: none; }
.turn-lab ol, .turn-lab ul { list-style: none; margin: 0; padding: 0; }
.turn-lab li { margin: 0; }
.turn-lab li::marker { content: none; }

.turn-lab__block--system { --k: var(--color-pop-violet); }
.turn-lab__block--tools { --k: var(--color-pop-gold); }
.turn-lab__block--user { --k: var(--color-bg-navy); }
.turn-lab__block--assistant { --k: var(--color-accent); }
.turn-lab__block--tool { --k: var(--color-pop-coral); }

.turn-lab__sr { position: absolute; width: 0.0625rem; height: 0.0625rem; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Header: Back | count | Next on one row; step dots on their own row where there is room for 44px targets */
.turn-lab__head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: var(--space-xs) var(--space-sm); }
.turn-lab__count { justify-self: center; text-align: center; }
.turn-lab__btn {
  font: inherit; font-size: var(--text-ui); font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  border: thin solid var(--color-border); border-radius: 0.4em;
  background: var(--color-bg); color: var(--color-text); cursor: pointer;
  min-height: var(--turn-lab-target); min-width: var(--turn-lab-target);
}
.turn-lab__btn:hover:not(:disabled) { border-color: var(--color-accent); }
.turn-lab__btn:disabled { opacity: 0.45; cursor: default; }
.turn-lab__btn--primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-bg); }
.turn-lab__btn--primary:hover:not(:disabled) { background: var(--color-accent-hover); }
.turn-lab__dots { display: none; grid-column: 1 / -1; justify-content: center; }
@media (min-width: 40em) { .turn-lab__dots { display: flex; } }
.turn-lab__dot {
  display: grid; place-items: center;
  width: var(--turn-lab-target); height: var(--turn-lab-target); padding: 0;
  border: 0; border-radius: 50%; background: transparent; cursor: pointer;
}
.turn-lab__dot::before {
  content: ""; width: 1.1em; height: 1.1em; border-radius: 50%;
  border: thin solid var(--color-text-muted); background: transparent;
}
.turn-lab__dot.is-done::before { background: var(--color-text-muted); }
.turn-lab__dot[aria-current="step"]::before { background: var(--color-accent); border-color: var(--color-accent); transform: scale(1.2); }
.turn-lab__dot:hover::before { border-color: var(--color-accent); }
.turn-lab__count { font-size: var(--text-ui); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }

/* Caption */
.turn-lab__caption {
  margin: var(--space-sm) 0; padding: var(--space-sm) var(--space-md);
  border-left: 0.25em solid var(--color-accent); background: var(--color-bg);
  font-family: var(--font-serif); font-size: var(--text-base);
  min-height: 5.5em;
}
.turn-lab__step-title { font-family: var(--font-sans); }

/* The step-8 experiment: a pressed/unpressed toggle (aria-pressed carries the state) */
.turn-lab__try { margin: 0 0 var(--space-sm); }
.turn-lab__try[hidden] { display: none; }
.turn-lab__toggle { display: inline-flex; align-items: center; gap: 0.5em; max-width: 100%; text-align: left; }
.turn-lab__toggle::before {
  content: ""; flex: none; display: grid; place-items: center; width: 1.2em; height: 1.2em;
  border: thin solid var(--color-text-muted); border-radius: 0.25em; background: var(--color-bg); line-height: 1;
}
.turn-lab__toggle[aria-pressed="true"] { border-color: var(--color-accent); }
.turn-lab__toggle[aria-pressed="true"]::before { content: "✓"; background: var(--color-accent); border-color: var(--color-accent); color: var(--color-bg); }
.turn-lab__btn:focus-visible { outline: 0.2em solid var(--color-accent); outline-offset: 0.1em; }
.turn-lab__dropped {
  margin: var(--space-xs) 0 0; padding: var(--space-xs) var(--space-sm);
  border: thin dashed var(--color-border); border-radius: 0.4em;
  font-size: var(--text-xs); font-style: italic; color: var(--color-text-muted);
}

/* Body: two panels, stacked on narrow screens */
.turn-lab__body { display: grid; gap: var(--space-md); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 46em) { .turn-lab__body { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); } }
.turn-lab__panel { min-width: 0; }
.turn-lab__panel-title {
  margin: 0 0 var(--space-xs); font-family: var(--font-sans); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted);
}
.turn-lab__empty { margin: 0; color: var(--color-text-muted); font-style: italic; }

/* Chat bubbles */
.turn-lab__chat { display: flex; flex-direction: column; gap: var(--space-xs); }
.turn-lab__bubble {
  max-width: 92%; padding: var(--space-xs) var(--space-sm); border-radius: 0.6em;
  background: var(--color-bg); border: thin solid var(--color-border); overflow-wrap: anywhere;
}
.turn-lab__bubble--user { align-self: flex-end; background: color-mix(in srgb, var(--color-bg-navy) 12%, var(--color-bg)); }
.turn-lab__bubble--assistant { align-self: flex-start; border-left: 0.25em solid var(--color-accent); }
.turn-lab__bubble--status { align-self: flex-start; color: var(--color-text-muted); font-style: italic; border-style: dashed; }

/* Request blocks */
.turn-lab__blocks { display: flex; flex-direction: column; gap: var(--space-xs); }
.turn-lab__block details { border: thin solid var(--color-border); border-left: 0.35em solid var(--k); border-radius: 0.4em; background: var(--color-bg); }
.turn-lab__block.is-resent details { border-left-style: dotted; }
.turn-lab__block summary {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 var(--space-sm);
  padding: var(--space-xs) var(--space-sm); cursor: pointer; list-style: none; min-height: var(--turn-lab-target); align-content: center;
}
.turn-lab__block summary::-webkit-details-marker { display: none; }
.turn-lab__block summary::before { content: "▸"; color: var(--color-text-muted); }
.turn-lab__block details[open] summary::before { content: "▾"; }
.turn-lab__block summary:focus-visible { outline: 0.2em solid var(--color-accent); outline-offset: 0.1em; }
.turn-lab__role { font-weight: 700; }
.turn-lab__where { color: var(--color-text-muted); font-size: var(--text-xs); }
.turn-lab__chars { margin-left: auto; color: var(--color-text-muted); font-size: var(--text-xs); font-variant-numeric: tabular-nums; }
.turn-lab__tag { font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; padding: 0 0.4em; border-radius: 0.3em; }
.turn-lab__tag--new { background: var(--color-accent); color: var(--color-bg); }
.turn-lab__tag--resent { border: thin dashed var(--color-text-muted); color: var(--color-text-muted); }
.turn-lab__text {
  display: block; margin: 0; padding: var(--space-xs) var(--space-sm) var(--space-sm);
  font-family: var(--font-mono); font-size: var(--text-xs); white-space: pre-wrap; overflow-wrap: anywhere;
  border: 0; color: var(--color-text);
}
.turn-lab__swatch { display: inline-block; width: 0.8em; height: 0.8em; border-radius: 0.2em; background: var(--k); margin-right: 0.35em; vertical-align: -0.05em; }
.turn-lab__block summary .turn-lab__swatch { display: none; }
.turn-lab__out { margin-top: var(--space-sm); padding-top: var(--space-sm); border-top: thin dashed var(--color-border); }
.turn-lab__out-label { margin: 0 0 var(--space-xs); font-size: var(--text-xs); color: var(--color-text-muted); font-family: var(--font-mono); }

/* Meter */
.turn-lab__meter { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-xs) var(--space-md); margin: var(--space-md) 0 0; padding-top: var(--space-sm); border-top: thin solid var(--color-border); }
@media (min-width: 40em) { .turn-lab__meter { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.turn-lab__meter dt { font-size: var(--text-xs); color: var(--color-text-muted); }
.turn-lab__meter dd { margin: 0; font-size: var(--text-lg); font-weight: 700; font-variant-numeric: tabular-nums; }

/* Bars: one row per request, segment width proportional to characters */
.turn-lab__bars { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-md); }
.turn-lab__bar-row { display: grid; grid-template-columns: 5.5em minmax(0, 1fr); gap: 0 var(--space-sm); align-items: center; }
.turn-lab__bar-label { font-size: var(--text-xs); font-weight: 700; }
.turn-lab__bar-track { display: flex; height: 1.4em; background: var(--color-bg); border: thin solid var(--color-border); border-radius: 0.3em; overflow: hidden; }
.turn-lab__bar-total { grid-column: 2; font-size: var(--text-xs); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.turn-lab__bar-row.is-future { opacity: 0.5; }
.turn-lab__bar-row.is-current .turn-lab__bar-track { outline: 0.15em solid var(--color-accent); outline-offset: 0.1em; }
.turn-lab__seg { display: block; height: 100%; background: var(--k); }
.turn-lab__seg.is-resent, .turn-lab__legend-resent .turn-lab__swatch {
  background: repeating-linear-gradient(135deg, var(--k) 0 0.3em, color-mix(in srgb, var(--k) 35%, var(--color-bg)) 0.3em 0.6em);
}
.turn-lab__legend-resent { --k: var(--color-text-muted); }
.turn-lab__legend { display: flex; flex-wrap: wrap; gap: var(--space-xs) var(--space-md); margin-top: var(--space-sm); font-size: var(--text-xs); color: var(--color-text-muted); }

@media (prefers-reduced-motion: reduce) { .turn-lab * { transition: none !important; } }