/*
  The lesson video (Blocks/_Video.cshtml, js/video.js): a framed stage in the world's colours, the poster with a big
  play button, the version switch, a "Now" bar with "Practise it", and the chapters as chips (a scrolling strip on a
  phone, a dense grid on wider screens). Light and dark through the .ln tokens; the kids and teen looks below.
*/
.ln-video { margin: 0; display: grid; gap: 10px; }

.ln-video-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.ln-video-kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--w-ink, #0e7a5f); }
.ln-video-kicker svg { width: 18px; height: 18px; padding: 4px; border-radius: 50%; fill: #fff; background: var(--w-accent, #0e7a5f); }
.ln-video-length { padding: 2px 8px; border-radius: 999px; background: var(--ln-card-2); color: var(--ln-muted); letter-spacing: .04em; box-shadow: inset 0 0 0 1px var(--ln-line); }

.ln-video-switch { display: inline-flex; padding: 3px; border-radius: 999px; background: var(--ln-card-2); box-shadow: inset 0 0 0 1px var(--ln-line-2); }
.ln-video-switch button { border: 0; background: transparent; color: var(--ln-ink-2); font: inherit; font-size: 13.5px; font-weight: 800; padding: 6px 14px; min-height: 34px; border-radius: 999px; cursor: pointer; transition: background .2s var(--ln-ease), color .2s var(--ln-ease); }
.ln-video-switch button[aria-pressed="true"] { background: var(--w-strong, #0e7a5f); color: #fff; box-shadow: 0 6px 16px -8px var(--w-accent, #0e7a5f); }

.ln-video-stage { position: relative; border-radius: 20px; overflow: hidden; background: #0d1210; aspect-ratio: 16 / 9; box-shadow: var(--ln-shadow-lift), 0 0 0 1px color-mix(in srgb, var(--w-accent, #0e7a5f) 35%, transparent); }
.ln-video-stage::after { content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit; box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--w-glow, #e3c77e) 45%, transparent); }
.ln-video-stage video { display: block; width: 100%; height: 100%; object-fit: contain; background: #0d1210; }
.ln-video-play { position: absolute; inset: 0; margin: auto; width: 86px; height: 86px; border: 0; border-radius: 50%; cursor: pointer; display: grid; place-items: center; color: #fff;
  background: color-mix(in srgb, var(--w-deep, #163d2d) 70%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, .55), 0 18px 40px -12px rgba(0, 0, 0, .55); transition: transform .25s var(--ln-ease); }
.ln-video-play svg { width: 38px; height: 38px; fill: currentColor; margin-inline-start: 5px; }
.ln-video-play::before { content: ""; position: absolute; inset: -10px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .45); animation: ln-video-ring 2.4s ease-out infinite; }
.ln-video-play:hover, .ln-video-play:focus-visible { transform: scale(1.06); }
.ln-video-play[hidden] { display: none; }
@keyframes ln-video-ring { from { transform: scale(.9); opacity: .9; } to { transform: scale(1.35); opacity: 0; } }

.ln-video-now { display: flex; align-items: center; gap: 10px; min-height: 40px; padding: 4px 6px 4px 14px; border-radius: 14px; background: color-mix(in srgb, var(--w-accent, #0e7a5f) 9%, var(--ln-card)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--w-accent, #0e7a5f) 22%, transparent); }
.ln-video-now[hidden] { display: none; }
.ln-video-now-label { font-size: 11px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; color: var(--w-ink, #0e7a5f); }
.ln-video-now b { flex: 1; font-weight: 800; color: var(--ln-ink); }
.ln .ln-video-practise { min-height: 34px; padding: 4px 14px; font-size: 13.5px; }
.ln-video-practise[hidden] { display: none; }

.ln-video-chapters { list-style: none; margin: 0; padding: 2px; display: flex; gap: 8px; overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: thin; counter-reset: none; }
.ln-video-chapters li { flex: 0 0 auto; scroll-snap-align: center; }
.ln-video-chapters button { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 8px; align-items: center; text-align: start; min-width: 132px; min-height: 48px;
  padding: 7px 12px 7px 8px; border: 0; border-radius: 14px; cursor: pointer; font: inherit; color: var(--ln-ink); background: var(--ln-card); box-shadow: inset 0 0 0 1px var(--ln-line-2);
  transition: box-shadow .2s var(--ln-ease), background .2s var(--ln-ease), transform .2s var(--ln-ease); }
.ln-video-chapters button:hover { transform: translateY(-1px); box-shadow: inset 0 0 0 1px var(--w-accent, #0e7a5f); }
.ln-video-n { grid-row: 1 / 3; width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; font-size: 12.5px; font-weight: 900; color: var(--w-ink, #0e7a5f); background: color-mix(in srgb, var(--w-accent, #0e7a5f) 12%, transparent); }
.ln-video-chapters b { font-size: 13.5px; font-weight: 800; line-height: 1.2; white-space: nowrap; }
.ln-video-chapters time { font-size: 11.5px; font-weight: 700; color: var(--ln-muted); font-variant-numeric: tabular-nums; }
.ln-video-chapters button.is-current { background: var(--w-accent, #0e7a5f); color: #fff; box-shadow: 0 10px 22px -12px var(--w-accent, #0e7a5f); }
.ln-video-chapters button.is-current .ln-video-n { background: rgba(255, 255, 255, .2); color: #fff; }
.ln-video-chapters button.is-current time { color: rgba(255, 255, 255, .8); }

@media (min-width: 900px) {
  .ln-video-chapters { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); overflow: visible; }
  .ln-video-chapters button { width: 100%; }
}

/* Kids: bigger, rounder, sunnier. */
.ln--kid .ln-video-stage { border-radius: 28px; box-shadow: var(--ln-shadow-lift), 0 0 0 4px color-mix(in srgb, var(--w-glow, #ffd36b) 70%, transparent); }
.ln--kid .ln-video-play { width: 104px; height: 104px; background: color-mix(in srgb, var(--w-accent, #0f8b7d) 85%, transparent); }
.ln--kid .ln-video-chapters button { min-height: 56px; border-radius: 18px; }
.ln--kid .ln-video-chapters b { font-size: 15px; }

@media (max-width: 600px) {
  .ln-video-play, .ln--kid .ln-video-play { width: 72px; height: 72px; }
  .ln-video-play svg { width: 30px; height: 30px; }
  .ln-video-stage { border-radius: 16px; }
}

/* Teens: a neon edge on the dark stage. */
.ln--teen .ln-video-stage { box-shadow: 0 0 0 1px color-mix(in srgb, var(--w-accent, #7c5cff) 70%, transparent), 0 0 36px -8px color-mix(in srgb, var(--w-accent, #7c5cff) 60%, transparent); }

@media (prefers-reduced-motion: reduce) {
  .ln-video-play::before { animation: none; }
  .ln-video-chapters button, .ln-video-play { transition: none; }
}