/*
 * Video band and player, shared by the home page (concept film), "How it's built" (product tour) and "About" (story).
 * Depends on css/design-system.css tokens; behaviour in js/player.js.
 */

/* ══════════════════════════════════════════════════════════
   VIDEO BAND AND PLAYER (concept film, product tour)
   ══════════════════════════════════════════════════════════ */

.tour {
  position: relative;
  padding-block: var(--section);
  background: var(--theater);
  border-block: 1px solid var(--line);
  isolation: isolate;
  overflow: hidden;
}

.tour::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: none;
}

.player__frame {
  overflow: hidden;
  border: 1px solid var(--theater-line);
  border-radius: var(--r-lg);
  background: var(--theater-2);
  box-shadow: var(--shadow-3);
}

.player__stage {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--theater-2);
}

.player__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.player__play {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  color: #fff;
  background: rgba(24, 32, 28, 0.04);
  transition: opacity var(--dur-2) var(--ease-out);
}

.player__play-icon {
  --size: clamp(64px, 9vw, 92px);
  display: grid;
  place-items: center;
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  background: var(--btn-fill);
  color: var(--btn-ink);
  box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.7), 0 12px 30px -12px rgba(24, 32, 28, 0.4);
  transition: transform var(--dur-2) var(--ease-out);
}

.player__play-icon svg {
  width: calc(var(--size) * 0.36);
  height: calc(var(--size) * 0.36);
  margin-left: calc(var(--size) * 0.06);
}

.player__play-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--r-pill);
  background: rgba(21, 23, 27, 0.72);
  font-size: var(--fs-sm);
  font-weight: 500;
}

.player__play-label .mono {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--fs-xs);
}

.player__hint {
  display: none;
  margin-top: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--theater-ink-2);
}

/* No playable source: point to the transcript instead of a dead frame */
.player__unavailable {
  display: none;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--r-pill);
  background: rgba(21, 23, 27, 0.72);
  font-size: var(--fs-sm);
}

.player.is-unavailable .player__play-label {
  display: none;
}

.player.is-unavailable .player__unavailable {
  display: inline-flex;
}

.player__play:hover .player__play-icon {
  transform: scale(1.06);
}

.player.is-started .player__play {
  opacity: 0;
  pointer-events: none;
}

/* While the silent preview loops, the button sits in the bottom corner so the film's words stay readable;
   a tap anywhere on the video still starts it */
.player.is-previewing .player__play {
  flex-flow: row wrap;
  align-content: flex-end;
  justify-content: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
}

.player.is-previewing .player__play-icon {
  --size: 52px;
  box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.7), 0 10px 24px -12px rgba(24, 32, 28, 0.4);
}

.player .chapters {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.player .chapters--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chapter {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "num title time"
    "desc desc desc";
  align-items: baseline;
  column-gap: var(--space-2);
  row-gap: var(--space-1);
  width: 100%;
  height: 100%;
  padding: var(--space-4) var(--space-4) var(--space-5);
  overflow: hidden;
  border: 1px solid var(--theater-line);
  border-radius: var(--r-md);
  background: var(--tint);
  color: var(--theater-ink);
  text-align: left;
  transition: background-color var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out);
}

.chapter:hover {
  background: var(--tint-2);
  border-color: var(--line-hover);
}

.chapter__num {
  grid-area: num;
  font-size: var(--fs-2xs);
  color: var(--accent);
}

.chapter__title {
  grid-area: title;
  font-weight: 600;
  font-size: var(--fs-sm);
}

.chapter__time {
  grid-area: time;
  font-size: var(--fs-2xs);
  color: var(--theater-ink-2);
}

.chapter__desc {
  grid-area: desc;
  font-size: var(--fs-xs);
  line-height: 1.45;
  color: var(--theater-ink-2);
}

.chapter__bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
}

.chapter.is-active {
  border-color: var(--accent-line);
  background: var(--accent-soft);
}

@media (max-width: 860px) {
  .player .chapters {
    display: flex;
    margin-inline: calc(var(--gutter) * -1);
    padding: 0 var(--gutter) var(--space-2);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: var(--gutter);
    scrollbar-width: none;
  }

  .player .chapters::-webkit-scrollbar {
    display: none;
  }

  .player .chapters li {
    flex: 0 0 min(220px, 62%);
    scroll-snap-align: start;
  }

  .player__frame {
    border-radius: var(--r-md);
  }
}

/* Phones: the commercial switches to its 4:5 cut; the landscape-only tour says it opens full screen */
@media (max-width: 699px) {
  .player--portrait-on-phones .player__stage {
    aspect-ratio: 4 / 5;
  }

  /* The phone poster has a headline above and a phone below; button and label sit side by side in the gap */
  .player--portrait-on-phones .player__play {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-3);
    padding-top: 16%;
  }

  /* If the phone turns mid-play, letterbox instead of cropping */
  .player--portrait-on-phones .player__video {
    object-fit: contain;
  }

  .player--fullscreen-on-phones .player__hint {
    display: block;
  }

  /* A 16:9 poster is small on a phone: a smaller button in the gap between the poster's
     headline and phone, and the label kept for screen readers only (the length is in the heading) */
  .player--fullscreen-on-phones .player__play {
    padding-left: 10%;
  }

  .player--fullscreen-on-phones .player__play-icon {
    --size: 56px;
    box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.7), 0 10px 24px -12px rgba(24, 32, 28, 0.4);
  }

  .player--fullscreen-on-phones .player__play-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

.transcript {
  margin-top: var(--space-8);
  max-width: 760px;
  color: var(--theater-ink-2);
}

.transcript summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--theater-ink);
  list-style: none;
}

.transcript summary::-webkit-details-marker {
  display: none;
}

.transcript summary::before {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  transition: transform var(--dur-2) var(--ease-out);
}

.transcript[open] summary::before {
  transform: rotate(45deg);
}

.transcript__body {
  padding: var(--space-4) 0 0 var(--space-5);
  border-left: 1px solid var(--theater-line);
  font-size: var(--fs-sm);
}