/* Event art frames (js/ui/art.js) with optional credited photos (js/ui/photo.js). */
.art { position: relative; overflow: hidden; border-radius: var(--radius-md, 14px); background: var(--color-surface-sunk); isolation: isolate; }
.art__svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.art__photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .7s ease, transform 6s ease-out; transform: scale(1.04); }
.art.has-photo .art__photo { opacity: 1; transform: none; }
.art__credit {
  position: absolute; z-index: 1; right: 6px; bottom: 6px; max-width: calc(100% - 12px);
  padding: 2px 8px; border-radius: 999px; background: rgba(26, 18, 12, .62); color: rgba(251, 246, 236, .9);
  font-family: var(--font-mono); font-size: 9px; letter-spacing: .02em; line-height: 1.6;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; opacity: 0; transition: opacity .4s ease .3s;
}
.art.has-photo .art__credit { opacity: 1; }
.art__credit a { color: inherit; text-decoration: none; }
.art__credit a:hover { text-decoration: underline; }

.sheet__art { aspect-ratio: 16 / 9; margin: 0 0 var(--space-3, 14px); box-shadow: inset 0 0 0 1px rgba(42, 31, 23, .06); }
.quiz__art { aspect-ratio: 16 / 9; margin: -6px -6px 10px; border-radius: 12px; }
.quiz__opt { overflow: hidden; }
.chron-card:has(.chron-card__thumb) { position: relative; padding-right: 86px; }
.chron-card__thumb { position: absolute; right: 12px; top: 12px; width: 62px; height: 62px; border-radius: 12px; }
.film__art { aspect-ratio: 21 / 9; margin: -6px -8px 12px; border-radius: 12px; }
@media (max-width: 640px) { .film__art { display: none; } }

@media (prefers-reduced-motion: no-preference) {
  .sheet__content--in .sheet__art .art__svg, .quiz__art .art__svg { animation: art-in 1.2s var(--ease-out, ease) both; }
}
@keyframes art-in { from { transform: scale(1.12); filter: saturate(.6); } }

/* ---------------------------------------------------------------- Quiz learning trail */
.trail { margin-top: var(--space-5, 28px); padding-top: var(--space-4, 20px); border-top: 1px solid var(--color-border); display: grid; gap: 14px; }
.trail__head { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; }
.trail__head p { margin: 4px 0 0; }
.trail__actions { display: flex; gap: 6px; flex-wrap: wrap; }
.trail__axis { position: relative; height: 46px; margin: 4px 8px 6px; border-bottom: 1px solid var(--color-ink); }
.trail__tick { position: absolute; bottom: -5px; width: 1px; height: 9px; background: var(--color-ink-soft); }
.trail__tick span { position: absolute; top: 12px; left: 50%; transform: translateX(-50%); font-family: var(--font-mono); font-size: 9px; color: var(--color-ink-soft); white-space: nowrap; }
.trail__dot { position: absolute; bottom: 6px; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; border: 2px solid var(--color-canvas-alt); background: var(--c); cursor: pointer; padding: 0; box-shadow: 0 1px 3px rgba(42, 31, 23, .3); transition: transform .2s var(--spring, ease); }
.trail__dot:nth-child(3n) { bottom: 20px; }
.trail__dot:nth-child(3n+1) { bottom: 13px; }
.trail__dot:hover, .trail__dot:focus-visible { transform: scale(1.5); z-index: 1; }
.trail__list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.trail__q { display: grid; grid-template-columns: 28px 1fr; gap: 6px 10px; align-items: center; padding: 10px; border: 1px solid var(--color-border); border-radius: var(--radius-md, 14px); background: var(--color-surface); }
.trail__mark { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; font-size: 13px; color: var(--color-canvas-alt); background: var(--color-sage, #7A8B67); }
.trail__q.is-wrong .trail__mark { background: var(--color-rose, #C8726C); }
.trail__pair { display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; align-items: center; min-width: 0; }
.trail__gap { font-size: 10px; color: var(--color-ink-soft); text-align: center; }
.trail__ev { display: flex; gap: 10px; align-items: center; min-width: 0; text-align: left; border: 0; background: none; padding: 4px; border-radius: 10px; cursor: pointer; font: inherit; color: inherit; }
.trail__ev:hover { background: var(--color-surface-sunk); }
.trail__ev > span { display: grid; min-width: 0; }
.trail__ev .mono { font-size: 9px; color: var(--color-brass, #A0672E); }
.trail__ev b { font-family: var(--font-display); font-weight: 600; font-size: .98rem; line-height: 1.2; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.trail__thumb { flex: none; width: 46px; height: 46px; border-radius: 10px; }
.trail__more { grid-column: 2; display: flex; gap: 6px; flex-wrap: wrap; }
.trail__more:empty { display: none; }
@media (max-width: 640px) { .trail__pair { grid-template-columns: 1fr; } .trail__gap { text-align: left; } }
@media (prefers-reduced-motion: no-preference) { .trail__q { animation: film-rise .45s var(--ease-out, ease) both; animation-delay: calc(var(--i) * 40ms); } }