/* Idea Lab walkthrough (lab-steps.js). Only applies once the script has run. */
.lab-form.is-steps { position: relative; }
.lab-form.is-steps .lab-step[hidden] { display: none; }
.lab-form.is-steps .lab-step:focus { outline: none; }
.lab-form.is-steps .lab-step.is-in { animation: labStepIn .32s ease both; }
@keyframes labStepIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.lab-progress { margin: 0 0 34px; }
.lab-progress-meta {
  display: flex; justify-content: space-between; gap: 12px;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 10px;
}
.lab-progress-bar { position: relative; height: 2px; background: var(--line); overflow: hidden; }
.lab-progress-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--signal); transition: width .35s ease; }

.lab-sr {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* Step headings: the question itself becomes the headline */
.lab-step-title,
.lab-form.is-steps .lab-q legend,
.lab-form.is-steps .chips legend {
  font-family: var(--serif); font-weight: 400; font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  line-height: 1.12; letter-spacing: 0; text-transform: none; color: var(--ink);
  margin: 0 0 8px; padding: 0;
}
.lab-form.is-steps .lab-q legend .req,
.lab-form.is-steps .chips legend .req { font-size: .6em; vertical-align: super; }
.lab-step-hint { color: var(--muted); margin: 0 0 24px; max-width: 46ch; }
.lab-form.is-steps .lab-q { margin-top: 0; gap: 10px; }
.lab-form.is-steps .chips { margin-bottom: 0; }
/* In single-question steps the hint sits inside the fieldset, under the legend */
.lab-form.is-steps fieldset > .lab-step-hint { margin-bottom: 14px; }
.lab-form.is-steps .chips > .lab-step-hint { flex-basis: 100%; max-width: none; margin-bottom: 8px; }

.lab-form.is-steps .lab-q label { transition: border-color .15s ease, background-color .15s ease; }
.lab-form.is-steps .lab-q label:hover { border-color: var(--ink-2); }
.lab-form.is-steps .lab-q label:has(input:checked) { border-color: var(--ink); background: var(--paper-2); }

.lab-nav { display: flex; align-items: center; gap: 18px; margin-top: 30px; }
.lab-nav .lab-next[hidden], .lab-nav .lab-back[hidden] { display: none; }
.lab-back {
  background: none; border: 0; padding: 8px 0; cursor: pointer;
  font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}
.lab-back:hover, .lab-back:focus-visible { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.lab-form.is-steps .f-actions { margin-top: 22px; flex-wrap: wrap; align-items: center; gap: 18px; }
.lab-form.is-steps .f-actions .lab-back { order: -1; }

/* Review list on the last step */
.lab-review { margin: 0 0 26px; border-top: 1px solid var(--line); }
.lab-review:empty { display: none; }
.lab-review-row {
  display: grid; grid-template-columns: minmax(120px, 34%) 1fr; gap: 14px;
  padding: 11px 0; border-bottom: 1px solid var(--line);
}
.lab-review dt {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); padding-top: 3px;
}
.lab-review dd { margin: 0; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.lab-edit {
  flex: none; background: none; border: 0; padding: 0; cursor: pointer;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--signal-text); text-decoration: underline; text-underline-offset: 3px;
}
@media (max-width: 560px) {
  .lab-review-row { grid-template-columns: 1fr; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  .lab-form.is-steps .lab-step.is-in { animation: none; }
  .lab-progress-fill { transition: none; }
}