/* A1 lab styles. Only what styles.css lacks: the lab panel, dials, token chips,
   chance bars and run history. Uses the custom properties from styles.css so both
   themes work. Unlayered on purpose: these rules must win over styles.css defaults. */

/* ---------- No scripting ---------- */

html:not(.js) .lab-panel { display: none; }

/* ---------- Panel ---------- */

.lab-panel {
  --lab-word: var(--info);
  --lab-word-soft: var(--info-soft);
  --lab-piece: var(--indigo);
  --lab-piece-soft: var(--indigo-soft);
  --lab-punct: var(--amber);
  --lab-punct-soft: var(--amber-soft);
  --lab-end: var(--green);
  --lab-end-soft: var(--green-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--green);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  font-size: var(--fs-sm);
}
.lab-panel :last-child { margin-bottom: 0; }

.lab-heading { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2); margin: 0 0 var(--space-4); }
.lab-heading h2 { margin: 0; font-size: var(--fs-lg); }
.lab-heading .meta { margin: 0; }

#seed-note[hidden] { display: none; }
#seed-note { margin: 0 0 var(--space-3); font-size: var(--fs-xs); color: var(--text-muted); }

/* ---------- Dials ---------- */

.lab-dials { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); margin-bottom: var(--space-4); }
.lab-dial { display: grid; gap: var(--space-1); min-width: 0; }
.lab-dial-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); min-width: 0; }
.lab-dial label { font-weight: 650; }
.lab-dial .dial-hint { font-size: var(--fs-xs); color: var(--text-muted); margin: 0; }
.lab-dial output {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  min-width: 4ch;
  text-align: right;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
}
input[type="range"] {
  width: 100%; height: 36px; margin: 0;
  accent-color: var(--indigo-strong);
  cursor: pointer;
}

/* ---------- Buttons ---------- */

.lab-buttons { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-4); }
.lab-panel .btn { min-height: 44px; }

/* ---------- Answer readout ---------- */

.lab-answer {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}
.lab-answer-legend { margin: 0 0 var(--space-3); font-size: var(--fs-xs); color: var(--text-muted); }
.lab-answer-legend strong { color: var(--text); font-weight: 650; }

#prompt-text { margin: 0 0 var(--space-3); color: var(--text-muted); }
#prompt-text strong { color: var(--text); font-weight: 650; }

.answer-empty { margin: 0; color: var(--text-muted); }
.answer-text { margin: var(--space-3) 0 0; color: var(--text-muted); }
.answer-text strong { color: var(--text); font-weight: 650; }

/* ---------- Token chips ---------- */

ol.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); min-width: 0; }
.chip {
  display: inline-flex; align-items: baseline; gap: 6px;
  background: var(--surface);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  min-height: 36px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.2;
  min-width: 0;
  max-width: 100%;
}
.chip[data-kind="word"] { background: var(--lab-word-soft); border-color: var(--lab-word); border-style: solid; }
.chip[data-kind="piece"] { background: var(--lab-piece-soft); border-color: var(--lab-piece); border-style: dashed; }
.chip[data-kind="punct"] { background: var(--lab-punct-soft); border-color: var(--lab-punct); border-style: dotted; }
.chip[data-kind="end"] { background: var(--lab-end-soft); border-color: var(--lab-end); border-style: double; }

.chip .chip-n {
  font-size: var(--fs-xs); font-weight: 700; color: var(--text-muted);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-pill); padding: 0 7px; line-height: 1.6;
}
.chip .chip-text { font-weight: 650; color: var(--text); }
.chip .chip-kind { font-size: var(--fs-xs); color: var(--text-muted); font-family: var(--font-sans); }

/* ---------- Chance bars ---------- */

.dist-caption { margin: 0 0 var(--space-3); font-size: var(--fs-xs); color: var(--text-muted); }
#dist { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
#dist .bar { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr) 4.5rem; align-items: center; gap: var(--space-3); min-width: 0; }
#dist .bar-label { display: flex; flex-direction: column; gap: 0; min-width: 0; }
#dist .bar-token { font-family: var(--font-mono); font-weight: 650; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#dist .bar-kind { font-size: var(--fs-xs); color: var(--text-muted); }
#dist .bar-track { display: block; height: 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-pill); overflow: hidden; }
#dist .bar-fill { display: block; height: 100%; min-width: 2px; background: var(--chrome-accent); border-radius: inherit; }
#dist .bar[data-kind="word"] .bar-fill { background: var(--lab-word); }
#dist .bar[data-kind="piece"] .bar-fill { background: var(--lab-piece); }
#dist .bar[data-kind="punct"] .bar-fill { background: var(--lab-punct); }
#dist .bar[data-kind="end"] .bar-fill { background: var(--lab-end); }
#dist .bar-pct { font-variant-numeric: tabular-nums; font-weight: 650; text-align: right; color: var(--text); }
#dist .bar.cut .bar-label { text-decoration: line-through; }
#dist .bar.cut .bar-kind { text-decoration: none; }
#dist .bar.cut .bar-track { border-style: dashed; opacity: .6; }
#dist .bar.cut .bar-fill { display: none; }
#dist .bar.cut .bar-pct { color: var(--text-muted); font-weight: 400; }

/* ---------- History and tally ---------- */

#tally { font-weight: 650; margin: 0 0 var(--space-3); }
#history { list-style: decimal inside; margin: 0 0 var(--space-4); padding: 0; display: grid; gap: var(--space-2); }
#history:empty { display: none; }
#history li {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 6px 10px; font-size: var(--fs-sm); min-width: 0;
}
#history li:first-child { border-color: var(--border-strong); }
#history .h-text { font-family: var(--font-mono); font-weight: 650; color: var(--text); overflow-wrap: anywhere; }
#history .h-meta { font-size: var(--fs-xs); color: var(--text-muted); }
#history .h-flag {
  font-size: var(--fs-xs); font-weight: 650; text-transform: uppercase; letter-spacing: .04em;
  color: var(--green-text); background: var(--green-soft);
  border: 1px solid var(--green); border-radius: var(--radius-pill); padding: 0 8px;
}
#history li:not(:first-child) .h-flag { color: var(--text-muted); background: var(--surface); border-color: var(--border-strong); }

/* ---------- Lab status ---------- */

#lab-status { margin: 0; min-height: 1.5em; font-size: var(--fs-sm); color: var(--text); }

/* ---------- Motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .chip, #dist .bar-fill { transition: none; animation: none; }
}

/* ---------- Narrow screens ---------- */

@media (max-width: 539.98px) {
  .lab-panel { padding: var(--space-4); }
  .lab-dials { grid-template-columns: minmax(0, 1fr); gap: var(--space-3); }
  .lab-buttons { display: grid; grid-template-columns: minmax(0, 1fr); }
  .lab-panel .btn { width: 100%; }
  #dist .bar { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  #dist .bar-label { flex-direction: row; justify-content: space-between; align-items: baseline; gap: var(--space-2); }
  #dist .bar-pct { text-align: left; }
}