/* ============================================================
   ALTULA — case-detail.css
   Case detail page: main gallery (large image + vertical
   thumbnail column with arrows) and info strip.
   Hero uses the shared .page-hero--image from common.css;
   header / footer styles come from style.css.
   ============================================================ */

/* ============================================================
   Gallery: large image + vertical thumbnail column
   ============================================================ */
.case-gallery-section {
  padding-top: clamp(2.5rem, 5vw, 4rem);
}

.case-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
  height: clamp(26rem, 58vw, 42rem);
  padding: clamp(0.75rem, 1.5vw, 1.25rem);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius);
}

.case-gallery__main {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
}

.case-gallery__main img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.25s ease;
}

.case-gallery__main img.is-fading {
  opacity: 0;
}

/* Thumbnail column: arrow / scrollable list / arrow */
.case-gallery__side {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
}

.case-gallery__arrow {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.5rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-white);
  color: var(--color-body);
  transition: color var(--transition), border-color var(--transition),
    opacity var(--transition);
}

.case-gallery__arrow svg {
  width: 1rem;
  height: 1rem;
}

.case-gallery__arrow:hover:not(:disabled) {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
}

.case-gallery__arrow:disabled {
  opacity: 0.35;
  cursor: default;
}

.case-gallery__arrow:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 0.2rem;
}

.case-gallery__thumbs {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow-y: auto;
  scrollbar-width: none; /* Firefox */
  scroll-behavior: smooth;
}

.case-gallery__thumbs::-webkit-scrollbar {
  display: none;
}

.case-gallery__thumb {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
  padding: 0;
  aspect-ratio: 4 / 3;
  border: 2px solid transparent;
  border-radius: var(--radius);
  opacity: 0.7;
  transition: opacity var(--transition), border-color var(--transition);
}

.case-gallery__thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-gallery__thumb:hover {
  opacity: 1;
}

.case-gallery__thumb.is-active {
  border-color: var(--color-gold);
  opacity: 1;
}

.case-gallery__thumb:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 0.2rem;
}

/* ============================================================
   Info strip (description + scenario / model)
   ============================================================ */
.case-info {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem 3rem;
  flex-wrap: wrap;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid var(--color-line);
}

.case-info__text {
  max-width: 44rem;
}

.case-info__meta {
  display: flex;
  gap: clamp(1.5rem, 3vw, 3rem);
  flex-wrap: wrap;
}

.case-info__meta .label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.case-info__meta .value {
  font-weight: 600;
  color: var(--color-ink);
}

/* ============================================================
   Responsive
   ============================================================ */

/* --- 768px — 1024px : tablet portrait --- */
@media (max-width: 64rem) {
  .case-gallery {
    grid-template-columns: minmax(0, 1fr) 12rem;
    height: clamp(22rem, 58vw, 34rem);
  }
}

/* --- < 768px : mobile (thumbs become a horizontal row) --- */
@media (max-width: 48rem) {
  .case-gallery {
    grid-template-columns: 1fr;
    height: auto;
  }

  .case-gallery__main {
    aspect-ratio: 16 / 10;
  }

  .case-gallery__side {
    flex-direction: row;
  }

  .case-gallery__arrow {
    display: none;
  }

  .case-gallery__thumbs {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .case-gallery__thumb {
    width: 7rem;
  }
}