/* ─────────────────────────────────────────────────────
   CASE STUDY LAYOUT
───────────────────────────────────────────────────── */

/* ── Hero Banner ── */
.case-hero {
  padding: 160px 80px 80px;
  max-width: 1400px;
  margin: 0 auto;
}

.case-hero__eyebrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(244,243,238,.4);
  margin-bottom: 48px;
}

.case-hero__back {
  color: var(--white);
  text-decoration: none;
  transition: color .2s;
  letter-spacing: .1em;
}
.case-hero__back:hover { color: var(--green); }

.case-hero__title {
  font-size: clamp(72px, 12vw, 160px);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: .88;
  margin-bottom: 64px;
}

.rline {
  display: block;
  overflow: hidden;
  line-height: .92;
  padding-bottom: .08em;
}
.rline > span {
  display: block;
  transform: translateY(110%);
}

.case-hero__meta {
  display: flex;
  gap: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--off);
  opacity: 0;
  transform: translateY(24px);
}

.case-meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.case-meta-item__label {
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(244,243,238,.35);
}
.case-meta-item__val {
  font-size: 15px;
  font-weight: 500;
}

/* ── Cover image ── */
.case-cover {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  opacity: 0;
  transform: translateY(40px);
}
.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .8s cubic-bezier(.25,.46,.45,.94);
}
.case-cover:hover img { transform: scale(1.03); }

/* ── Text Blocks ── */
.case-text-blocks {
  max-width: 1400px;
  margin: 0 auto;
  padding: 100px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  border-bottom: 1px solid var(--off);
}

.case-text-block {
  opacity: 0;
  transform: translateY(30px);
}

.case-text-block__label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .28em;
  text-transform: uppercase;
  opacity: .35;
  margin-bottom: 20px;
}

.case-text-block__body {
  font-size: clamp(15px, 1.6vw, 19px);
  line-height: 1.75;
  font-weight: 300;
  color: rgba(244,243,238,.78);
}

/* Full-width single text block variant */
.case-text-blocks--single {
  grid-template-columns: 1fr;
  max-width: 860px;
}

/* Three columns variant */
.case-text-blocks--three {
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

/* ── Image Grid ── */
.case-image-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.case-image-grid__item {
  overflow: hidden;
  aspect-ratio: 4/3;
  opacity: 0;
  transform: translateY(30px);
  background: #1a1c1f;
}

.case-image-grid__item--wide {
  grid-column: span 2;
  aspect-ratio: 16/9;
}

.case-image-grid__item--tall {
  grid-row: span 2;
  aspect-ratio: auto;
}

.case-image-grid__item--square {
  aspect-ratio: 1/1;
}

.case-image-grid__item--full {
  grid-column: 1 / -1;
  aspect-ratio: 21/9;
}

.case-image-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .7s cubic-bezier(.25,.46,.45,.94), filter .5s ease;
  filter: grayscale(20%);
}

.case-image-grid__item:hover img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

/* ── Next project nav ── */
.case-nav {
  padding: 80px;
  border-top: 1px solid var(--off);
  max-width: 1400px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(24px);
}

.case-nav__next {
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.case-nav__label {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(244,243,238,.4);
}
.case-nav__title {
  font-size: clamp(36px, 6vw, 80px);
  font-weight: 700;
  letter-spacing: -.03em;
  transition: color .2s;
  display: flex;
  align-items: center;
  gap: 16px;
}
.case-nav__next:hover .case-nav__title { color: var(--green); }
.case-nav__arr {
  flex-shrink: 0;
  stroke: currentColor;
  transition: transform .3s ease;
  width: clamp(20px, 3.5vw, 36px);
  height: clamp(20px, 3.5vw, 36px);
}
.case-nav__next:hover .case-nav__arr { transform: translate(6px, -6px); }

/* ── Case footer ── */
.case-footer {
  border-top: 1px solid var(--off);
  padding: 40px 80px;
}

/* ── Word reveal ── */
.rword {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
}
.rword > span {
  display: inline-block;
  transform: translateY(110%);
}

/* ── Animation base states ── */
.js-fade-up {
  opacity: 0;
  transform: translateY(40px);
}

/* ─────────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────────── */

/* ── 900px: Tablet ── */
@media (max-width: 900px) {
  .case-hero         { padding: 140px 40px 60px; }
  .case-hero__meta   { gap: 40px; flex-wrap: wrap; }
  .case-text-blocks  { padding: 60px 40px; grid-template-columns: 1fr; gap: 48px; }
  .case-text-blocks--three { grid-template-columns: 1fr 1fr; }
  .case-nav          { padding: 60px 40px; }
  .case-footer       { padding: 32px 40px; }

  /* Grid: 2 columns on tablet */
  .case-image-grid { grid-template-columns: repeat(2, 1fr); }
  .case-image-grid__item--wide { grid-column: span 2; aspect-ratio: 16/9; }
  .case-image-grid__item--tall { grid-row: auto; aspect-ratio: 4/3; }
  .case-image-grid__item--full { aspect-ratio: 16/9; }
}

/* ── 540px: Mobile ── */
@media (max-width: 540px) {
  .case-hero         { padding: 120px 20px 40px; }
  .case-hero__meta   { gap: 24px; }
  .case-text-blocks  { padding: 40px 20px; gap: 36px; }
  .case-text-blocks--three { grid-template-columns: 1fr; }
  .case-nav          { padding: 40px 20px; }
  .case-footer       { padding: 24px 20px; }

  /* Grid: 1 column on mobile */
  .case-image-grid { grid-template-columns: 1fr; gap: 3px; }
  .case-image-grid__item,
  .case-image-grid__item--wide,
  .case-image-grid__item--tall,
  .case-image-grid__item--full,
  .case-image-grid__item--square {
    grid-column: auto;
    grid-row: auto;
    aspect-ratio: 4/3;
  }
}