/* Página de tutoriales estilo YouTube. Tema oscuro de la marca. */
.pagina-videos { background: #05070d; }
.videos-main { padding: 104px 16px 64px; }

/* Filtros por sistema (chips) */
.chips { display: flex; gap: 10px; overflow-x: auto; padding: 4px 2px 18px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip-filtro {
  flex: none; padding: 8px 16px; border-radius: 999px; text-decoration: none; font-size: 14px; font-weight: 500;
  background: rgba(255,255,255,.06); color: #e2e8f0; border: 1px solid rgba(255,255,255,.08);
  transition: background .25s, color .25s;
}
.chip-filtro:hover { background: rgba(255,255,255,.12); }
.chip-filtro.activo { background: #f1f5f9; color: #05070d; border-color: #f1f5f9; }

/* Reproducción + lista lateral */
.reproduccion { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 24px; align-items: start; }
.reproductor { position: relative; width: 100%; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: #000; box-shadow: 0 24px 60px -24px rgba(0,0,0,.8); }
.reproductor iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-titulo { font-size: clamp(20px, 2.6vw, 28px); line-height: 1.25; margin: 16px 0 12px; font-weight: 700; }
.video-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,.08); }
.video-meta > div { flex: 1; min-width: 180px; }
.video-meta strong { display: block; font-size: 15px; }
.video-meta span { color: #94a3b8; font-size: 13px; }
.canal-avatar { width: 42px; height: 42px; border-radius: 50%; object-fit: contain; background: #0b1020; padding: 4px; border: 1px solid rgba(255,255,255,.1); flex: none; }
.canal-avatar.pequeno { width: 34px; height: 34px; }
.btn-chico-videos { height: 40px; padding: 0 16px; font-size: 14px; }
.video-descripcion { margin-top: 14px; color: #cbd5e1; font-size: 14px; line-height: 1.6; background: rgba(255,255,255,.04); padding: 14px 16px; border-radius: 12px; }

.relacionados h2 { font-size: 16px; margin: 0 0 14px; font-weight: 700; }
.rel-item { display: flex; gap: 12px; text-decoration: none; color: #e2e8f0; margin-bottom: 14px; }
.rel-miniatura { width: 168px; flex: none; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; background: #111827; }
.rel-miniatura img, .card-miniatura img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s; }
.rel-item:hover .rel-miniatura img { transform: scale(1.05); }
.rel-texto strong { display: block; font-size: 14px; line-height: 1.35; margin-bottom: 4px; }
.rel-texto span { color: #94a3b8; font-size: 12px; }
.vacio-pequeno { color: #94a3b8; font-size: 14px; }

/* Cuadrícula estilo YouTube */
.grilla-videos { margin-top: 48px; }
.grilla-videos h2 { font-size: 20px; margin: 0 0 18px; font-weight: 700; }
.grid-yt { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 26px 18px; }
.card-yt { text-decoration: none; color: #e2e8f0; display: block; }
.card-miniatura { position: relative; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; background: #111827; }
.card-miniatura .play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) scale(.8); width: 52px; height: 52px; border-radius: 50%;
  display: grid; place-items: center; background: rgba(0,0,0,.65); color: #fff; font-size: 18px; opacity: 0; transition: all .3s;
}
.card-yt:hover .play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.card-yt:hover .card-miniatura img { transform: scale(1.04); }
.card-info { display: flex; gap: 12px; margin-top: 12px; }
.card-info strong { display: block; font-size: 15px; line-height: 1.35; margin-bottom: 4px; }
.card-info span { display: block; color: #94a3b8; font-size: 13px; line-height: 1.5; }

.estado-vacio { text-align: center; padding: 80px 16px; }
.estado-vacio h1 { font-size: 36px; margin-bottom: 10px; }
.estado-vacio p { color: #94a3b8; margin-bottom: 24px; }

/* Vista previa de tutoriales en la página principal */
.tut-cabecera { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; margin-bottom: 36px; }
.tut-cabecera h2 { margin-bottom: 0; }
.tut-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tut-card { text-decoration: none; color: #e2e8f0; display: grid; gap: 10px; }
.tut-miniatura { position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: #111827; border: 1px solid rgba(255,255,255,.08); }
.tut-miniatura img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s; }
.tut-card:hover .tut-miniatura img { transform: scale(1.05); }
.tut-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 54px; height: 54px; border-radius: 50%;
  display: grid; place-items: center; background: rgba(0,0,0,.6); color: #fff; font-size: 18px; transition: background .3s;
}
.tut-card:hover .tut-play { background: linear-gradient(135deg, #ff8a1f, #2f6bff); }
.tut-card strong { font-size: 16px; line-height: 1.35; }
.tut-card span { color: #94a3b8; font-size: 13px; }
.tut-proximamente { padding: 28px; border-radius: 16px; border: 1px dashed rgba(255,255,255,.14); color: #94a3b8; text-align: center; }
@media (max-width: 900px) { .tut-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .tut-grid { grid-template-columns: 1fr; } }

/* Móvil: el reproductor ocupa el ancho y la lista va debajo */
@media (max-width: 960px) {
  .reproduccion { grid-template-columns: 1fr; }
  .rel-miniatura { width: 144px; }
}
@media (max-width: 560px) {
  .videos-main { padding: 92px 12px 48px; }
  .grid-yt { grid-template-columns: 1fr; }
  .btn-chico-videos { width: 100%; justify-content: center; }
}