/* review-session.css
   Styling for the in-lesson retrieval engine (review-session.js).
   Uses the existing --sa-* design tokens; declares no new colours of its own. */

.sa-review-intro {
  margin: 0 0 20px;
  padding: 12px 16px;
  border-left: 3px solid var(--sa-teal);
  background: var(--sa-teal-soft);
  border-radius: 0 var(--sa-r-sm) var(--sa-r-sm) 0;
  color: var(--sa-ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.sa-review-q {
  padding: 18px 0;
  border-top: 1px solid var(--sa-rule-soft);
}
.sa-review-q:first-of-type { border-top: none; }

/* The interleaving must be visible. Students rate interleaved practice as
   unlikable and ineffective even when it works, so mixing it in silently reads
   as a bug. Labelled, it reads as rigour. */
.sa-review-tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--sa-plum-soft);
  color: var(--sa-plum-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.sa-review-stem {
  margin: 0 0 12px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--sa-ink);
}

.sa-review-marks {
  margin: -6px 0 10px;
  color: var(--sa-muted);
  font-size: 13px;
  font-weight: 600;
}

.sa-review-options { display: flex; flex-direction: column; gap: 8px; }

.sa-review-opt {
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  border: 1.5px solid var(--sa-rule);
  border-radius: var(--sa-r-sm);
  background: #fff;
  color: var(--sa-ink);
  font: inherit;
  font-size: 14px;
  line-height: 1.5;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.sa-review-opt:hover:not(:disabled) { border-color: var(--sa-teal); background: var(--sa-teal-soft); }
.sa-review-opt:disabled { cursor: default; }

.sa-review-opt.is-correct {
  border-color: var(--sa-green);
  background: var(--sa-green-soft);
  font-weight: 600;
}
.sa-review-opt.is-wrong {
  border-color: var(--sa-coral);
  background: var(--sa-coral-soft);
}

/* Elaborative feedback, never a bare tick. The explanation IS the intervention. */
.sa-review-feedback {
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: var(--sa-r-sm);
  background: var(--sa-bg-warm);
}

.sa-review-verdict {
  margin: 0 0 6px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--sa-ink-soft);
}
.sa-review-verdict.is-right { color: var(--sa-green); }
.sa-review-verdict.is-wrong { color: var(--sa-coral); }

.sa-review-why {
  margin: 0 0 10px;
  line-height: 1.65;
  color: var(--sa-ink-soft);
  font-size: 14px;
}
.sa-review-why:last-child { margin-bottom: 0; }

.sa-review-input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--sa-rule);
  border-radius: var(--sa-r-sm);
  background: #fff;
  font: inherit;
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
}
.sa-review-input:focus { outline: none; border-color: var(--sa-teal); }
.sa-review-input.is-empty { border-color: var(--sa-coral); }
.sa-review-input:disabled { background: var(--sa-bg-warm); color: var(--sa-ink-soft); }

/* Self-marking against the criteria is itself a retrieval and metacognition act,
   which is why there is one criterion per mark. */
.sa-review-criterion {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 8px;
  padding: 8px 10px;
  border-radius: var(--sa-r-sm);
  background: #fff;
  font-size: 14px;
  line-height: 1.5;
  color: var(--sa-ink-soft);
  cursor: pointer;
}
.sa-review-criterion input { margin-top: 3px; flex: none; }

.sa-review-summary {
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: var(--sa-r);
  border: 1.5px solid var(--sa-teal);
  background: var(--sa-teal-soft);
}

.sa-review-q .sa-next-btn { margin-top: 12px; }

@media (prefers-reduced-motion: reduce) {
  .sa-review-opt { transition: none; }
}