/* Shared calm surfaces for the learning entry flow and older direct links.
   Answer validation, progress and semantic feedback retain their own states. */
.learning-flow {
  --public-bg: var(--kds-color-background, #f6f7fa);
  min-height: 60vh;
}
.learning-flow > .container { max-width: 1180px; }
.learning-flow h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.learning-flow .learning-flow-summary {
  background: var(--public-bg);
  border-bottom: 1px solid var(--public-line);
}
.learning-flow-summary > .container { max-width: 880px; }
.learning-flow-summary .display-1 { font-size: clamp(3rem, 8vw, 4.5rem); }
.learning-flow .btn { min-height: 44px; border-radius: 12px; white-space: normal; }
.learning-flow .form-text { color: var(--public-muted); line-height: 1.6; }
.learning-flow form[action="/study-plan/setup"] {
  background: var(--public-surface);
  border: 1px solid var(--public-line);
  border-radius: 20px;
  padding: clamp(20px, 4vw, 36px);
}
.learning-flow .qt-answer-btn {
  display: flex;
  align-items: baseline;
  color: var(--public-ink);
  background-color: var(--public-surface);
  border-color: var(--public-line);
  line-height: 1.6;
}
.learning-flow .qt-answer-btn:not(:disabled):hover {
  background: var(--public-soft);
  border-color: var(--public-brand);
}
.learning-flow .qt-answer-text { min-width: 0; overflow-wrap: anywhere; }
.learning-flow .progress { background-color: var(--public-line); }
.learning-flow .katex-display,
.kdg-shell-main .katex-display { overflow-x: auto; overflow-y: hidden; padding-block: 4px; }

/* The diagnosis keeps its distraction-free shell and native radio inputs. */
.kdg-shell-header__inner { max-width: 1180px; min-height: 82px; }
.kdg-shell-main > .container { max-width: 1180px; }
.kdg-shell-main h1 { letter-spacing: -.035em; }
.kdg-shell-main .card,
.kdg-shell-main .diagnosis-result-card {
  background: var(--kds-color-surface);
  border: 1px solid var(--kds-color-line) !important;
  border-radius: var(--kds-radius-xl);
  box-shadow: none;
}
.kdg-shell-main .card.shadow-sm { box-shadow: none !important; }
.kdg-shell-main .diagnosis-confetti { display: none; }
.kdg-shell-main .diagnosis-result-panel {
  background: var(--kds-color-surface);
  border: 1px solid var(--kds-color-line);
  box-shadow: none;
}
.kdg-shell-main label.btn:has(input[type="radio"]:checked) {
  border-color: var(--kds-color-primary);
  background: var(--kds-color-primary-soft);
  color: var(--kds-color-ink);
}
.kdg-shell-main label.btn:has(input:focus-visible) {
  outline: var(--kds-focus-ring-width) solid var(--kds-focus-ring-color);
  outline-offset: var(--kds-focus-ring-offset);
}
@media (max-width: 575.98px) {
  .learning-flow > section { padding-block: 28px !important; }
  .learning-flow .card-body { padding: 20px !important; }
  .learning-flow .btn-lg { font-size: 1rem; }
  .kdg-shell-header__inner { min-height: 72px; }
}
.kdg-shell-main .diagnosis-result-page { background: var(--kds-color-background); }
.learning-flow .list-group-item { background: var(--public-surface); color: var(--public-ink); }
.learning-flow .step-body { min-width: 0; }
.learning-flow-step { flex-wrap: wrap; row-gap: 12px; }
.learning-flow-step > .flex-grow-1 { flex-basis: 50%; min-width: 0; }
@media (max-width: 575.98px) {
  .learning-flow .step-body > .d-flex { flex-wrap: wrap; gap: 8px; }
}