/* Learner tools used by the answer-history and classroom guides. */

.learner-lab {
  margin: var(--space-5) 0 var(--space-6);
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel-2);
}

.learner-lab[hidden] {
  display: none;
}

.learner-lab__eyebrow {
  margin: 0 0 var(--space-1);
  color: var(--accent-text);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.guide-prose .learner-lab h2,
.guide-prose .learner-lab h3 {
  margin: 0 0 var(--space-2);
}

.learner-lab__intro,
.learner-lab__fallback,
.learner-lab__hint {
  margin: 0 0 var(--space-4);
  color: var(--muted);
  font-size: var(--text-base);
  line-height: 1.55;
}

.learner-lab__fallback {
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
}

.learner-lab__jump {
  font-weight: 700;
}

.learner-lab__controls {
  display: grid;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
}

.learner-lab label,
.learner-lab legend {
  color: var(--fg);
  font-size: var(--text-sm);
  font-weight: 700;
}

.learner-lab select,
.learner-lab button {
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel);
  color: var(--fg);
  font: inherit;
}

.learner-lab select {
  width: min(100%, 28rem);
  padding: var(--space-2) var(--space-3);
}

.learner-lab button {
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  font-weight: 700;
}

.learner-lab button:hover,
.learner-lab button:focus-visible,
.learner-lab select:focus-visible {
  border-color: var(--accent);
  outline: 3px solid color-mix(in srgb, var(--accent) 28%, transparent);
  outline-offset: 2px;
}

.learner-lab__result {
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.learner-lab__result p {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.55;
}

.learner-lab__result p:last-child {
  margin-bottom: 0;
}

.learner-lab__answer {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.learner-bars {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.learner-bar__label {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.learner-bar__track {
  height: 0.7rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--border);
}

.learner-bar__fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 180ms ease-out;
}

.learner-choice-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  border: 0;
}

.learner-choice-list button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.learner-steps {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-6);
  padding: 0;
  list-style: none;
  counter-reset: learner-step;
}

.learner-steps li {
  position: relative;
  min-height: 2.5rem;
  padding-left: 3.25rem;
  counter-increment: learner-step;
}

.learner-steps li::before {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  content: counter(learner-step);
  font-weight: 800;
}

@media (prefers-reduced-motion: reduce) {
  .learner-bar__fill {
    transition: none;
  }
}

@media (max-width: 600px) {
  .learner-lab {
    padding: var(--space-4);
  }

  .learner-bar__label {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
  }
}