/* sections/culture.css — horizontal scroll cultural timeline */
.culture {
  background: var(--paper);
  padding-block: var(--s-9) var(--s-9);
  position: relative;
}
.culture__head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-5);
  align-items: end;
  margin-bottom: var(--s-7);
}
@media (max-width: 700px) {
  .culture__head { grid-template-columns: 1fr; }
  .culture__controls { display: none; }
}
.culture__title {
  max-width: 22ch;
  text-wrap: balance;
}
.culture__sub {
  color: var(--ink-soft);
  max-width: 56ch;
  margin-top: var(--s-3);
  font-size: 1.05rem;
  line-height: var(--lh-loose);
}
.culture__controls {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.culture__btn {
  width: 46px; height: 46px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: var(--paper-cool);
  box-shadow: inset 0 0 0 1px var(--line);
  transition: background var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.culture__btn:hover { background: var(--ink); color: var(--paper); }
.culture__btn:active { transform: scale(0.96); }
.culture__btn[disabled] { opacity: 0.4; pointer-events: none; }
.culture__btn svg { width: 16px; height: 16px; }

.culture__counter {
  font-family: var(--font-mono);
  font-size: var(--f-tiny);
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin-right: 6px;
  min-width: 6ch;
  text-align: right;
}

.culture__track-wrap {
  position: relative;
  margin-inline: calc(var(--gutter) * -1);
  padding-inline: var(--gutter);
  overflow: hidden;
}
.culture__track-wrap::after {
  content: "";
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: clamp(40px, 8vw, 120px);
  background: linear-gradient(90deg, transparent, var(--paper) 90%);
  pointer-events: none;
}

.culture__track {
  display: flex;
  gap: var(--s-5);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--gutter);
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-block: var(--s-3) var(--s-5);
  cursor: grab;
}
.culture__track::-webkit-scrollbar { display: none; }
.culture__track.is-dragging { cursor: grabbing; }

.culture-card {
  position: relative;
  flex: 0 0 clamp(280px, 30vw, 380px);
  aspect-ratio: 3 / 4;
  border-radius: var(--r-4);
  overflow: hidden;
  scroll-snap-align: start;
  background: var(--paper-warm);
  box-shadow: var(--sh-2);
  isolation: isolate;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  text-align: left;
  color: var(--paper);
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out);
}
.culture-card:hover { transform: translateY(-4px); box-shadow: var(--sh-3); }
.culture-card__media {
  position: absolute; inset: 0;
  z-index: 0;
}
.culture-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease-out);
}
.culture-card:hover .culture-card__media img { transform: scale(1.04); }
.culture-card__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,13,10,0) 30%, rgba(15,13,10,0.78) 100%);
}
.culture-card__body {
  position: relative;
  z-index: 1;
  padding: var(--s-5) var(--s-5) var(--s-5);
}
.culture-card__index {
  position: absolute;
  top: var(--s-4); left: var(--s-5);
  font-family: var(--font-mono);
  font-size: var(--f-tiny);
  color: rgba(245,241,232,0.78);
  letter-spacing: 0.16em;
  z-index: 1;
}
.culture-card__index::before {
  content: "";
  display: inline-block;
  width: 18px; height: 1px;
  background: var(--gold-soft);
  vertical-align: middle;
  margin-right: 8px;
}
.culture-card__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin-bottom: 8px;
}
.culture-card__era {
  font-size: var(--f-tiny);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold-soft);
  margin-bottom: 12px;
}
.culture-card__desc {
  font-size: var(--f-small);
  line-height: 1.55;
  color: rgba(245,241,232,0.88);
  max-width: 32ch;
}
.culture-card__people {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(245,241,232,0.18);
  font-size: var(--f-tiny);
  color: rgba(245,241,232,0.72);
}
.culture-card__people strong { color: var(--paper); font-weight: 500; }

/* Brief intro band above the strip */
.culture-intro {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--s-8);
  align-items: start;
  margin-bottom: var(--s-7);
}
@media (max-width: 800px) { .culture-intro { grid-template-columns: 1fr; gap: var(--s-5); } }

.culture-intro__history {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 56ch;
  border-left: 1px solid var(--line);
  padding-left: var(--s-5);
}
.culture-intro__history em { color: var(--ink); }

.culture-intro__index {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-4);
}
.culture-intro__index .item {
  padding: var(--s-4);
  background: var(--paper-cool);
  border-radius: var(--r-3);
  border: 1px solid var(--line);
}
.culture-intro__index .item .n {
  font-family: var(--font-mono);
  color: var(--gold-deep);
  font-size: var(--f-tiny);
  letter-spacing: 0.12em;
}
.culture-intro__index .item .l {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-top: 6px;
  color: var(--ink);
}
.culture-intro__index .item .d {
  font-size: var(--f-tiny);
  color: var(--ink-mute);
  margin-top: 4px;
  line-height: 1.5;
}

/* Reveal initial state */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }