/* Discover 动画 tab (lib/discover-films.js, docs/prd-video-sharing-20261104.md). Film posters follow the
   contest wall's film card: 16:9 picture, a dark play mark, the running time in a corner; the community
   cards reuse the book cards' author / like / share / preview controls from discover-books.css. */

/* minmax(0, 1fr): without it the scrolling 官方精选 row's full width becomes the tab's width. */
.discover-films { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; }
.discover-films > .dl-shelf { min-inline-size: 0; }
/* The tab panel is switched with [hidden]; the display rule above must not override it. */
.discover-films[hidden] { display: none; }

.dl-film-poster {
  position: relative;
  display: block;
  inline-size: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 12px;
  background: var(--rk-paper-2);
}
.dl-film-poster img { inline-size: 100%; block-size: 100%; object-fit: cover; display: block; }
.dl-film-play {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 50%;
  inline-size: 48px;
  block-size: 48px;
  transform: translate(-50%, -50%);
  transition: transform .18s ease;
}
[dir="rtl"] .dl-film-play { transform: translate(50%, -50%); }
.dl-film-tag,
.dl-film-length {
  position: absolute;
  border-radius: 999px;
  padding: 3px 9px;
  background: rgba(14, 13, 11, .62);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
}
.dl-film-tag { inset-block-start: 10px; inset-inline-start: 10px; }
.dl-film-length { inset-block-end: 10px; inset-inline-end: 10px; font-variant-numeric: tabular-nums; }

/* 官方精选: one scrolling row of posters. */
.dl-film-official-row {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 300px);
  gap: 16px;
  overflow-x: auto;
  padding-block-end: 8px;
  scroll-snap-type: x proximity;
}
.dl-film-official {
  display: grid;
  gap: 8px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--rk-ink);
  text-align: start;
  cursor: pointer;
  scroll-snap-align: start;
}
.dl-film-official-title { font-size: 15px; font-weight: 700; line-height: 1.35; overflow-wrap: anywhere; }
.dl-film-official:hover .dl-film-play,
.dl-film-card-poster:hover .dl-film-play { transform: translate(-50%, -50%) scale(1.08); }
.dl-film-official:focus-visible,
.dl-film-card-poster:focus-visible { outline: 3px solid var(--rk-focus-ring); outline-offset: 3px; border-radius: 12px; }

/* 用户作品: two columns, one under 640px. */
.dl-film-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.dl-film-card {
  display: grid;
  gap: 10px;
  border: 1px solid var(--rk-line);
  border-radius: 16px;
  padding: 12px;
  background: var(--rk-surface);
}
.dl-film-card-poster { padding: 0; border: 0; background: none; cursor: pointer; }
.dl-film-card-title { margin: 0; font-size: 16px; line-height: 1.35; overflow-wrap: anywhere; }
.dl-film-card-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-inline-size: 0; }
.dl-film-card-actions { display: flex; align-items: center; gap: 6px; flex: 0 0 auto; }
.dl-film-empty { margin: 8px 0 24px; color: var(--rk-ink-soft); font-size: 14px; line-height: 1.6; }
.dl-film-more { block-size: 1px; }

/* The viewer: the contest viewer's frame with a <video> on the stage instead of an iframe. */
.dl-film-stage { display: grid; place-items: center; align-content: center; gap: 12px; padding: 16px; }
.dl-film-stage video { inline-size: 100%; max-block-size: 100%; border-radius: 12px; background: #000; object-fit: contain; }
.dl-film-lyrics { inline-size: min(100%, 720px); text-align: center; color: #f4f1ea; }
.dl-film-lyrics p { margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dl-film-lyrics [data-lyric-now] { font-size: 18px; font-weight: 700; }
.dl-film-lyrics [data-lyric-next] { min-block-size: 1.4em; color: #b9b3a7; font-size: 14px; }
.dl-film-viewer .contest-viewer-actions .contest-button svg { inline-size: 18px; block-size: 18px; }

@media (max-width: 640px) {
  .dl-film-grid { grid-template-columns: minmax(0, 1fr); }
  .dl-film-official-row { grid-auto-columns: 78%; }
}