/* Videos auf den App-Seiten: Vorschaufilm und Kacheln in Gruppen (ADR 0001). Farben aus palette.css,
   Abschnittsrahmen aus site.css. Kacheln: Desktop vier je Reihe, Tablet zwei, Handy als Zeile. */
.video-intro{max-width:68ch;color:var(--text-secondary);margin:0}
.video-preview{margin:36px 0 0}
.video-preview video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:var(--surface-secondary);border-radius:16px;box-shadow:0 0 0 1px var(--border-default),0 12px 32px rgba(0,0,0,.35)}
.video-preview figcaption{margin-top:12px;color:var(--text-muted);font-size:.875rem}
.video-group{margin-top:56px}
.video-group-title{margin:0;font-size:1.375rem}
.video-group-text{margin:4px 0 0;color:var(--text-secondary)}
.video-grid{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.video-card{display:flex;flex-direction:column;height:100%;text-decoration:none;color:var(--text-primary);background:var(--surface-secondary);border:1px solid var(--border-default);border-radius:16px;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.45),0 12px 32px rgba(0,0,0,.35);transition:border-color .15s}
.video-card:hover{border-color:var(--text-secondary)}
.video-card:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}
.video-card img{display:block;width:100%;height:auto;aspect-ratio:560/569;object-fit:cover;background:var(--surface-primary)}
.video-card-body{display:flex;flex-direction:column;flex:1;padding:14px 16px 14px}
.video-card-title{font-weight:700;line-height:1.3}
.video-card-text{margin-top:6px;color:var(--text-secondary);font-size:.9375rem;line-height:1.45;flex:1}
.video-card-meta{margin-top:10px;color:var(--text-muted);font-size:.875rem}
.video-card-meta::before{content:"▶ ";color:var(--text-secondary)}
.video-more{margin-top:20px}
.video-more>summary{display:none}
.video-more>.video-grid{margin-top:0}
.video-dialog{width:min(1100px,94vw);padding:0;border:1px solid var(--border-default);border-radius:16px;background:var(--surface-primary);color:var(--text-primary)}
.video-dialog::backdrop{background:rgba(0,0,0,.78)}
.video-dialog video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#000}
.video-dialog-title{margin:0;padding:12px 18px 16px;font-weight:700}
.video-dialog form{position:absolute;top:8px;right:8px;margin:0;z-index:1}
.video-dialog-close{width:44px;height:44px;border:0;border-radius:50%;background:rgba(9,10,12,.75);color:var(--text-primary);font-size:1.5rem;line-height:1;cursor:pointer}
.video-dialog-close:focus-visible{outline:3px solid var(--focus-ring)}
@media (max-width:1000px){.video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){
  .video-grid{grid-template-columns:minmax(0,1fr);gap:12px}
  .video-card{flex-direction:row}
  .video-card img{width:38%;flex:none;align-self:center}
  .video-card-body{padding:12px 14px}
  .video-more{margin-top:12px}
  .video-more>summary{display:flex;align-items:center;justify-content:center;gap:.4em;min-height:48px;padding:10px 16px;border:1px solid var(--border-default);border-radius:10px;color:var(--text-primary);font-weight:700;cursor:pointer;list-style:none}
  .video-more>summary::-webkit-details-marker{display:none}
  .video-more>summary::after{content:"↓";color:var(--text-secondary)}
  .video-more[open]>summary{margin-bottom:12px}
  .video-more[open]>summary::after{content:"↑"}
  .video-more-count{color:var(--text-secondary);font-weight:600}
}
@media (prefers-reduced-motion:reduce){.video-card{transition:none}}