*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body { width: 100%; height: 100%; overflow: hidden; background: transparent; }

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

img { display: block; -webkit-user-drag: none; -webkit-touch-callout: none; }

/* ---------- Shell ---------- */

.ad {
  --line: rgba(201, 164, 92, 0.35);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  display: grid;
  width: var(--w);
  height: var(--h);
  padding: var(--pad);
  gap: var(--gap);
  overflow: hidden;
  background: radial-gradient(130% 70% at 50% 0%, var(--bg-glow) 0%, var(--bg) 65%);
  border: 1px solid var(--line);
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.ad--stacked {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: var(--thumbs-size) minmax(0, 1fr) var(--bar-size);
  grid-template-areas: "thumbs" "stage" "bar";
}

.ad--split {
  grid-template-columns: minmax(0, 1fr) var(--thumbs-size);
  grid-template-rows: minmax(0, 1fr) var(--bar-size);
  grid-template-areas: "stage thumbs" "stage bar";
}

/* ---------- Loader ---------- */

.loader {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader span {
  width: 26px;
  height: 26px;
  border: 2px solid rgba(201, 164, 92, 0.2);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.ad.is-ready .loader { opacity: 0; visibility: hidden; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Static thumbnails ---------- */

.thumbs {
  grid-area: thumbs;
  position: relative;
  display: flex;
  gap: var(--thumb-gap);
  min-width: 0;
  min-height: 0;
}

.ad--split .thumbs { flex-direction: column; }

.ad--stacked .thumbs::after {
  content: "";
  position: absolute;
  left: calc(var(--pad) * -1);
  right: calc(var(--pad) * -1);
  bottom: calc(var(--gap) / -2 - 0.5px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.55;
}

.thumb {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #000;
  opacity: 0;
  transform: translateY(-10px);
  transition:
    opacity 0.6s ease calc(var(--i) * 120ms + 200ms),
    transform 0.7s var(--ease) calc(var(--i) * 120ms + 200ms),
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.ad--split .thumb { transform: translateX(10px); }

.ad.is-ready .thumb { opacity: 1; transform: none; }

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), filter 0.4s ease;
}

.thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.45));
  pointer-events: none;
}

.thumb:hover img,
.thumb:focus-visible img,
.thumb.is-active img { transform: scale(1.08); }

.thumb.is-active {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold), 0 0 14px rgba(201, 164, 92, 0.45);
}

.ad.is-spotlight .thumb:not(.is-active) img { filter: grayscale(0.5) brightness(0.55); }

.thumb:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 1px; }

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

.stage {
  grid-area: stage;
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #000;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 0.8s ease 0.1s, transform 1s var(--ease) 0.1s;
}

.ad.is-ready .stage { opacity: 1; transform: none; }

.stage:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 1px; }

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--fade) ease;
}

.slide.is-active { opacity: 1; z-index: 2; }
.slide.is-leaving { z-index: 1; }

.slide__bg,
.spot-layer__bg {
  position: absolute;
  inset: -24px;
  background-size: cover;
  background-position: center;
  filter: blur(14px) brightness(0.5) saturate(1.1);
}

.slide__img,
.spot-layer__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.slide.is-active .slide__img,
.slide.is-leaving .slide__img { animation: kenburns var(--kb) linear forwards; }

@keyframes kenburns {
  from { transform: scale(1); }
  to { transform: scale(var(--kb-scale)); }
}

.ad.is-paused .slide__img,
.ad.is-paused .progress__fill { animation-play-state: paused; }

/* Story-style progress */

.progress {
  position: absolute;
  top: 6px;
  left: 8px;
  right: 8px;
  z-index: 5;
  display: flex;
  gap: 4px;
  transition: opacity 0.4s ease;
}

.progress__seg {
  position: relative;
  flex: 1;
  height: 2px;
  overflow: hidden;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.28);
}

.progress__fill {
  position: absolute;
  inset: 0;
  background: var(--gold-light);
  transform: scaleX(0);
  transform-origin: left center;
}

.progress__seg.is-done .progress__fill { transform: scaleX(1); }
.progress__seg.is-current .progress__fill { animation: fill var(--interval) linear forwards; }

@keyframes fill { to { transform: scaleX(1); } }

.ad.is-spotlight .progress,
.ad.is-ended .progress { opacity: 0; }

/* ---------- Spotlight (selected thumbnail replaces carousel) ---------- */

.spotlight {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.75s cubic-bezier(0.7, 0, 0.2, 1);
}

.ad--split .spotlight { clip-path: inset(0 0 0 100%); }

.ad.is-spotlight .spotlight { clip-path: inset(0 0 0 0); pointer-events: auto; }

.spot-layer {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.spot-layer.is-in { opacity: 1; }

.spot-layer__img {
  transform: scale(1.12);
  transition: transform 1.4s var(--ease);
}

.ad.is-spotlight .spot-layer.is-in .spot-layer__img { transform: scale(1); }

.spotlight::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -70%;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 236, 190, 0.28), transparent);
  transform: skewX(-18deg);
  pointer-events: none;
}

.ad.is-spotlight .spotlight::after { animation: sweep 1.3s ease 0.45s; }

@keyframes sweep { to { left: 130%; } }

.spotlight__close {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(18, 10, 10, 0.7);
  color: var(--gold-light);
  opacity: 0;
  transition: opacity 0.3s ease 0.4s;
}

.spotlight__close svg { width: 10px; height: 10px; }

.ad.is-spotlight .spotlight__close { opacity: 1; }

/* ---------- Bottom bar / CTA ---------- */

.bar {
  grid-area: bar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
  padding: 0 4px 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.2));
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s ease 0.7s, transform 0.7s var(--ease) 0.7s;
}

.ad--split .bar { padding: 0; border: 0; background: none; }

.ad.is-ready .bar { opacity: 1; transform: none; }

.tagline {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 9.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-light);
}

.cta {
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: calc(100% - 8px);
  padding: 0 12px;
  overflow: hidden;
  border: 1px solid var(--gold);
  border-radius: 3px;
  background: var(--cta-bg);
  color: var(--cta-text);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background 0.3s ease, transform 0.2s ease;
}

.ad--split .cta { width: 100%; height: 100%; padding: 0 6px; font-size: 9.5px; letter-spacing: 0.06em; }

.cta svg { width: 11px; height: 11px; transition: transform 0.3s var(--ease); }

.cta:hover svg { transform: translateX(3px); }
.cta:active { transform: scale(0.97); }
.cta:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 1px; }

.cta::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg);
  animation: shimmer 3.4s ease-in-out 2.2s infinite;
}

@keyframes shimmer {
  0% { left: -60%; }
  35%, 100% { left: 130%; }
}

@media (prefers-reduced-motion: reduce) {
  .slide.is-active .slide__img,
  .slide.is-leaving .slide__img,
  .cta::after,
  .ad.is-spotlight .spotlight::after { animation: none; }
}