/* ==========================================================================
   TouchTo — Stufe Detail screen (AssistUK redesign)
   Banner + collapsible info cards + activity tile grid + prev/next nav.
   Relies on shared components in redesign.css (.page-wide, .section,
   .section__title, .eyebrow, .stufe-banner, .card, .act-grid, .act-tile,
   .btn-ghost-pill).
   ========================================================================== */

.screen-stufe-detail {
  padding: 28px 24px 64px;
}
@media (max-width: 700px) {
  .screen-stufe-detail { padding: 18px 14px 56px; }
}

/* ── Back button ── */
.r-sd-back {
  margin-bottom: 22px;
  padding-top: 12px;
  padding-bottom: 12px;
  min-height: 48px;
}

/* ── Info section ── */
.r-sd-info { margin-top: 40px; }

.r-sd-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.r-sd-card {
  padding: 0;
  overflow: hidden;
  border-radius: 22px;
}
.r-sd-card:hover { transform: none; box-shadow: var(--shadow-md); }

/* Header acts as the expand/collapse toggle */
.r-sd-card__head {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: var(--c-fg1);
  min-height: 64px;
  transition: background var(--transition-base);
}
.r-sd-card__head:hover { background: var(--c-bg-secondary); }

.r-sd-card__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
}
.r-sd-card__icon svg,
.r-sd-card__icon i { width: 22px; height: 22px; }

.r-sd-card__title {
  flex: 1;
  min-width: 0;
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
  line-height: 1.2;
  margin: 0;
}

.r-sd-card__chevron {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: var(--c-fg3);
  transition: transform var(--ease-out, ease) 0.25s;
}
.r-sd-card__chevron svg,
.r-sd-card__chevron i { width: 22px; height: 22px; }
.r-sd-card.is-open .r-sd-card__chevron { transform: rotate(180deg); }

/* Body collapsed by default; revealed when card has .is-open */
.r-sd-card__body {
  display: none;
  padding: 0 24px 22px;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--c-fg2);
  white-space: pre-line;
}
.r-sd-card.is-open .r-sd-card__body { display: block; }

.r-sd-card__body .r-sd-link-item { margin: 0 0 10px; }
.r-sd-card__body a {
  color: var(--c-accent);
  font-weight: 600;
  word-break: break-word;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.r-sd-card__body a:hover { color: var(--c-accent-2); }

/* ── Activities ── */
.r-sd-acts { margin-top: 48px; }

/* ── Prev/next stufe navigation ── */
.r-sd-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
}
.r-sd-nav__btn { min-height: 52px; }
.r-sd-nav__btn span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 40vw;
}
@media (max-width: 480px) {
  .r-sd-nav { flex-direction: column; align-items: stretch; }
  .r-sd-nav__btn { width: 100%; }
}