/* =====================================================
   EAGLOPEN — Lite YouTube Embed (shared)
   Premium framed video player used on Research & AlgoLab.
   ===================================================== */

.yt-lite {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-primary-dark);
  box-shadow:
    0 30px 80px rgba(8, 26, 43, 0.45),
    0 4px 18px rgba(8, 26, 43, 0.3);
  isolation: isolate;
}

/* Editor-style chrome bar above the video */
.yt-lite-chrome {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.yt-lite-chrome .yt-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.18);
}

.yt-lite-chrome .yt-dot:nth-child(1) {
  background: #ff5f57;
}

.yt-lite-chrome .yt-dot:nth-child(2) {
  background: #febc2e;
}

.yt-lite-chrome .yt-dot:nth-child(3) {
  background: #28c840;
}

.yt-lite-chrome .yt-chrome-title {
  margin-left: var(--space-2);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.yt-lite-chrome .yt-chrome-live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.yt-lite-chrome .yt-chrome-live::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--color-gold);
  animation: ytLivePulse 1.8s ease-in-out infinite;
}

@keyframes ytLivePulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.75);
  }
}

/* Stage keeps a 16:9 ratio and hosts poster / iframe */
.yt-lite-stage {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.yt-lite-stage > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.8s var(--ease-expo), filter 0.8s var(--ease-expo);
}

.yt-lite:hover .yt-lite-stage > img {
  transform: scale(1.06);
}

/* Cinematic vignette over the poster */
.yt-lite-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(8, 26, 43, 0) 40%, rgba(8, 26, 43, 0.45) 100%),
    linear-gradient(180deg, rgba(8, 26, 43, 0.15) 0%, rgba(8, 26, 43, 0) 35%, rgba(8, 26, 43, 0.55) 100%);
  pointer-events: none;
  transition: opacity 0.6s var(--ease-expo);
}

.yt-lite.is-playing .yt-lite-stage::after {
  opacity: 0;
}

/* Play button */
.yt-lite-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 88px;
  height: 88px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(8, 26, 43, 0.55);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background 0.4s var(--ease-expo),
    transform 0.4s var(--ease-expo),
    box-shadow 0.4s var(--ease-expo);
  box-shadow: 0 0 0 0 rgba(201, 168, 76, 0.4);
}

.yt-lite-play i {
  margin-left: 4px;
}

.yt-lite-play::before {
  content: "";
  position: absolute;
  inset: -14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(201, 168, 76, 0.45);
  animation: ytPlayRing 2.4s var(--ease-expo) infinite;
  pointer-events: none;
}

@keyframes ytPlayRing {
  0% {
    transform: scale(0.85);
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  100% {
    transform: scale(1.25);
    opacity: 0;
  }
}

.yt-lite:hover .yt-lite-play {
  background: var(--color-gold);
  color: var(--color-primary-dark);
  transform: translate(-50%, -50%) scale(1.08);
  box-shadow: 0 12px 40px rgba(201, 168, 76, 0.45);
}

.yt-lite-play:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 4px;
}

/* Duration / label pill on the poster */
.yt-lite-label {
  position: absolute;
  left: var(--space-4);
  bottom: var(--space-4);
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: rgba(8, 26, 43, 0.65);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.92);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.04em;
  pointer-events: none;
}

.yt-lite-label i {
  color: var(--color-gold);
  font-size: 0.7rem;
}

/* Once playing: hide poster UI, show iframe */
.yt-lite.is-playing .yt-lite-play,
.yt-lite.is-playing .yt-lite-label,
.yt-lite.is-playing .yt-lite-stage > img {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s var(--ease-expo);
}

.yt-lite-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  z-index: 4;
}

@media (max-width: 640px) {
  .yt-lite-play {
    width: 64px;
    height: 64px;
    font-size: var(--font-size-xl);
  }

  .yt-lite-chrome .yt-chrome-title {
    max-width: 55%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .yt-lite-play::before,
  .yt-lite-chrome .yt-chrome-live::before {
    animation: none;
  }

  .yt-lite-stage > img,
  .yt-lite:hover .yt-lite-stage > img {
    transform: none;
    transition: none;
  }
}

/* FABLE 5: I FINISHED THIS FILE */