/* Age ladder: "Stories for their age" from the parents area (build_app.py .pladder + ageChips).
   A three-rung segmented control (Just their age / Their age and up / All ages), the child's
   age as four chips, and a small grid of real covers that filters live.
   Built by js/components/age-ladder.js inside <div class="db-age-ladder" data-db="age-ladder">. */
.db-age-ladder{color:var(--db-ink);font-family:var(--db-font)}
.db-age-ladder__label{margin:0 0 7px;font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--db-muted)}
.db-age-ladder__label:not(:first-child){margin-top:16px}
.db-age-ladder__rungs,.db-age-ladder__ages{display:grid;gap:5px;padding:5px;border-radius:14px;background:rgba(0,0,0,.22);border:1px solid rgba(255,255,255,.08)}
.db-age-ladder__rungs{grid-template-columns:repeat(3,1fr)}
.db-age-ladder__ages{grid-template-columns:repeat(4,1fr)}
.db-age-ladder__opt{min-height:52px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:6px 4px;border:0;border-radius:10px;
  background:none;color:var(--db-muted);font:600 .88rem/1.15 var(--db-font);text-align:center;text-wrap:balance;cursor:pointer;
  transition:background var(--m-dur-fast) var(--m-ease),color var(--m-dur-fast) var(--m-ease),transform var(--m-dur-fast) var(--m-ease)}
.db-age-ladder__ages .db-age-ladder__opt{min-height:44px;font-size:.95rem}
.db-age-ladder__opt small{display:block;font-weight:500;font-size:.74rem;opacity:.9}
.db-age-ladder__opt:hover{background:rgba(255,255,255,.08);color:var(--db-ink)}
.db-age-ladder__opt:active{transform:scale(.96)}
.db-age-ladder__opt[aria-checked="true"]{background:var(--db-gold);color:var(--db-on-gold)}
.db-age-ladder__opt:focus-visible{outline:3px solid var(--db-focus);outline-offset:2px}
.db-age-ladder__opt i{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:5px;vertical-align:1px}
.db-age-ladder__opt[aria-checked="true"] i{box-shadow:0 0 0 1.5px rgba(36,26,5,.4)}
.db-age-ladder__count{margin:16px 2px 10px;font-size:.92rem;color:var(--db-muted)}
.db-age-ladder__count b{color:var(--db-gold);font-variant-numeric:tabular-nums}
.db-age-ladder__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:12px}
.db-age-ladder__book{position:relative;margin:0;border-radius:8px;overflow:hidden;background:var(--db-card);box-shadow:0 6px 16px rgba(4,6,20,.4)}
.db-age-ladder__book img{width:100%;aspect-ratio:16/10;object-fit:cover}
.db-age-ladder__book .db-chip{position:absolute;left:6px;bottom:6px;min-height:22px;padding:0 .5rem;font-size:.7rem}
.db-age-ladder__book .db-chip--free{left:auto;right:6px;font-size:.6rem}
.db-age-ladder__book.is-in{animation:db-al-in var(--m-dur) var(--m-ease) both}
@keyframes db-al-in{from{opacity:0;transform:translateY(6px) scale(.96)}to{opacity:1;transform:none}}
.db-age-ladder__more{display:flex;align-items:center;justify-content:center;aspect-ratio:16/10;border-radius:8px;border:1.5px dashed rgba(255,255,255,.22);
  color:var(--db-muted);font-weight:700;font-size:.95rem}
.db-age-ladder__note{margin:10px 2px 0;font-size:.82rem;color:var(--db-muted);line-height:1.45}
@media (prefers-reduced-motion:reduce){.db-age-ladder__book.is-in{animation:none}.db-age-ladder__opt{transition:none}.db-age-ladder__opt:active{transform:none}}