/*
 * IsleIQ watch view: a lesson page built around one video.
 * Depends on: iq-tokens.css, iq-components.css
 * Adopted from the CF watch layout and fitted to the IsleIQ script
 * structure (hook, context, core, key takeaways, one CTA).
 *
 * Skeleton (Elementor HTML widget or template):
 *   <div class="iq-watch">
 *     <section class="iq-watch-stage">
 *       <div class="iq-watch-stage__inner">
 *         <span class="iq-watch-stage__sub">AI for Business . Episode 4</span>
 *         <h1 class="iq-watch-stage__title">...</h1>
 *         <div class="iq-video-embed"><iframe ...></iframe></div>
 *       </div>
 *     </section>
 *     <nav class="iq-chapter-bar" aria-label="Chapters">
 *       <div class="iq-chapter-bar__inner">
 *         <a class="iq-chapter-btn is-active" href="#hook">Hook <span class="iq-chapter-btn__time">0:00</span></a>
 *       </div>
 *     </nav>
 *     <div class="iq-watch-content">
 *       <div class="iq-watch-content__inner iq-content-row">
 *         <main class="iq-watch-main">... iq-takeaways, iq-transcript ...</main>
 *         <aside class="iq-content-row__aside">... iq-chapter-list, iq-series-next ...</aside>
 *       </div>
 *     </div>
 *   </div>
 */

.iq-watch {
  min-height: 100vh;
  background: var(--iq-navy-900);
  color: var(--iq-white);
}

/* ------------------------------------------------------------------
   Stage
------------------------------------------------------------------ */

.iq-watch-stage {
  padding: var(--iq-space-8) 0 0;
  background: linear-gradient(180deg, #06111d 0%, var(--iq-navy-900) 100%);
}

.iq-watch-stage__inner,
.iq-chapter-bar__inner,
.iq-watch-content__inner {
  width: min(100% - (var(--iq-container-pad) * 2), var(--iq-container-watch));
  margin-inline: auto;
}

.iq-watch-stage__sub {
  display: block;
  margin-bottom: var(--iq-space-2);
  color: var(--iq-mint);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.iq-watch-stage__title {
  margin-bottom: var(--iq-space-5);
  color: var(--iq-white);
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
  line-height: var(--iq-leading-snug);
}

.iq-video-embed {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--iq-radius-xl) var(--iq-radius-xl) 0 0;
  background: var(--iq-navy);
}

.iq-video-embed iframe,
.iq-video-embed video,
.iq-video-embed img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
}

/* Placeholder poster with a centred play button, before the embed loads. */
.iq-video-embed__poster {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--iq-space-4);
  background:
    radial-gradient(ellipse at 70% 20%, rgba(46, 196, 182, 0.2), transparent 60%),
    linear-gradient(160deg, var(--iq-teal-900), var(--iq-navy-900));
}

.iq-video-embed__poster-text {
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-sm);
  font-weight: 700;
}

/* ------------------------------------------------------------------
   Chapter bar: maps to the script sections.
------------------------------------------------------------------ */

.iq-chapter-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid var(--iq-mint-soft);
  background: rgba(0, 0, 0, 0.35);
}

.iq-chapter-bar__inner {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}

.iq-chapter-bar__inner::-webkit-scrollbar {
  display: none;
}

.iq-chapter-btn {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: var(--iq-space-2);
  padding: 0.9rem 1.1rem;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-xs);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    color var(--iq-duration) var(--iq-ease),
    border-color var(--iq-duration) var(--iq-ease);
}

.iq-chapter-btn:hover {
  color: var(--iq-white);
}

.iq-chapter-btn.is-active,
.iq-chapter-btn--active {
  border-bottom-color: var(--iq-amber);
  color: var(--iq-amber);
}

.iq-chapter-btn__time {
  color: rgba(255, 255, 255, 0.55);
  font-family: var(--iq-font-body);
  font-size: 0.7rem;
  font-weight: 500;
}

/* ------------------------------------------------------------------
   Content area
------------------------------------------------------------------ */

.iq-watch-content {
  padding: var(--iq-space-10) 0 var(--iq-space-20);
}

.iq-watch-main h2 {
  margin-bottom: var(--iq-space-5);
  padding-bottom: var(--iq-space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--iq-white);
  font-size: var(--iq-text-xl);
}

.iq-watch-main p {
  color: rgba(255, 255, 255, 0.74);
  line-height: var(--iq-leading-loose);
}

/* Transcript: <div class="iq-transcript"><button class="iq-transcript__toggle"
   aria-expanded="false" aria-controls="t1">Transcript <span class="iq-transcript__icon"
   aria-hidden="true"></span></button><div class="iq-transcript__body" id="t1" hidden>...</div></div>
   iq-main.js handles the toggle. */
.iq-transcript {
  overflow: hidden;
  margin-top: var(--iq-space-8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--iq-radius-lg);
}

.iq-transcript__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--iq-space-5) var(--iq-space-6);
  border: 0;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.78);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-sm);
  font-weight: 800;
  text-align: left;
  transition: background-color var(--iq-duration) var(--iq-ease);
}

.iq-transcript__toggle:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--iq-white);
}

.iq-transcript__icon {
  width: 0.6rem;
  height: 0.6rem;
  border: solid currentColor;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  transition: transform var(--iq-duration) var(--iq-ease);
}

.iq-transcript__toggle[aria-expanded="true"] .iq-transcript__icon {
  transform: rotate(-135deg);
}

.iq-transcript__body {
  max-height: 22rem;
  overflow-y: auto;
  padding: var(--iq-space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.78);
  font-size: var(--iq-text-sm);
  line-height: var(--iq-leading-loose);
}

.iq-transcript__body[hidden] {
  display: none;
}

/* ------------------------------------------------------------------
   Aside
------------------------------------------------------------------ */

.iq-chapter-list {
  overflow: hidden;
  margin-bottom: var(--iq-space-6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--iq-radius-lg);
  background: rgba(255, 255, 255, 0.03);
}

.iq-chapter-list__heading {
  margin: 0;
  padding: var(--iq-space-4) var(--iq-space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.iq-chapter-list__item {
  display: flex;
  align-items: center;
  gap: var(--iq-space-3);
  padding: var(--iq-space-4) var(--iq-space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  border-left: 3px solid transparent;
  text-decoration: none;
  transition: background-color var(--iq-duration) var(--iq-ease);
}

.iq-chapter-list__item:last-child {
  border-bottom: 0;
}

.iq-chapter-list__item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.iq-chapter-list__item.is-active {
  border-left-color: var(--iq-amber);
  background: var(--iq-amber-soft);
}

.iq-chapter-list__num {
  flex-shrink: 0;
  width: 1.4rem;
  color: var(--iq-amber);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-sm);
  font-weight: 800;
}

.iq-chapter-list__label {
  flex: 1;
  color: rgba(255, 255, 255, 0.74);
  font-size: var(--iq-text-sm);
  line-height: var(--iq-leading-snug);
}

.iq-chapter-list__item.is-active .iq-chapter-list__label {
  color: var(--iq-white);
  font-weight: 600;
}

.iq-chapter-list__time {
  flex-shrink: 0;
  padding: 2px 6px;
  border-radius: var(--iq-radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.7rem;
  font-weight: 600;
}

/* Next in series, or the single prompt-kit CTA for the episode. */
.iq-series-next {
  padding: var(--iq-space-6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 3px solid var(--iq-amber);
  border-radius: var(--iq-radius-lg);
  background: linear-gradient(160deg, var(--iq-teal-900), var(--iq-teal));
}

.iq-series-next__label {
  display: block;
  margin-bottom: var(--iq-space-2);
  color: var(--iq-amber);
  font-family: var(--iq-font-display);
  font-size: var(--iq-text-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.iq-series-next__title {
  margin-bottom: var(--iq-space-3);
  color: var(--iq-white);
  font-size: var(--iq-text-lg);
  line-height: var(--iq-leading-snug);
}

.iq-series-next__body {
  margin-bottom: var(--iq-space-5);
  color: rgba(255, 255, 255, 0.74);
  font-size: var(--iq-text-sm);
}

@media (max-width: 900px) {
  .iq-watch-content {
    padding-top: var(--iq-space-8);
  }
}