/* Side-scrolling carousel — minimalist single-image slider, skinned to the
   ABST vector-line design system. Button + autoplay driven; scroll-snap
   settles each index into place. Thin corner-bracket accents on hover
   match .post-card. */

.carousel-section {
  padding: 64px 0 48px;
}

.carousel-shell {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.carousel-viewport {
  flex: 1;
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 0 20px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.carousel-viewport::-webkit-scrollbar { display: none; }

.carousel-item {
  position: relative;
  flex: 0 0 100%;
  width: 100%;
  margin: 0;
  display: flex;
  justify-content: center;
  scroll-snap-align: center;
}

.carousel-item .carousel-thumb {
  width: min(1200px, 100%);
  border: 1.5px solid var(--line-strong);
  transition: border-color 0.18s ease;
}

.carousel-item:hover .carousel-thumb {
  border-color: var(--accent);
}

.carousel-thumb::before,
.carousel-thumb::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--accent-cyan);
  border-style: solid;
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
  z-index: 2;
}

.carousel-thumb::before { top: -1.5px; left: -1.5px; border-width: 2px 0 0 2px; }
.carousel-thumb::after { bottom: -1.5px; right: -1.5px; border-width: 0 2px 2px 0; }

.carousel-item:hover .carousel-thumb::before,
.carousel-item:hover .carousel-thumb::after { opacity: 1; }

.carousel-thumb {
  position: relative;
  aspect-ratio: 3 / 2;
  min-height: 440px;
  background: var(--paper-tint);
  overflow: hidden;
}

.carousel-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  -webkit-user-drag: none;
}

.carousel-thumb-placeholder {
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-arrow {
  flex: 0 0 auto;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.carousel-arrow:hover {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

@media (max-width: 640px) {
  .carousel-section { padding: 40px 20px 24px; }
  .carousel-thumb { min-height: 260px; }
  .carousel-arrow { display: none; }
}