/* ── Case study layout ── */
.case-back {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}
.case-back:hover { color: var(--walnut); }

.case-hero {
  padding-block: clamp(56px, 8vw, 96px) clamp(40px, 6vw, 64px);
  position: relative;
  z-index: 2;
}
.case-hero .case-back { margin-bottom: 40px; }
.case-hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(46px, 7.5vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.025em;
  margin: 16px 0 24px;
  color: var(--ink);
}
.case-hero h1 em { color: var(--walnut); font-style: italic; }
.case-hero .lede {
  font-family: var(--serif);
  font-size: clamp(18px, 1.6vw, 23px);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 62ch;
  margin: 0 0 56px;
}
.case-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--rule-soft);
  margin: 0;
}
@media (max-width: 720px) {
  .case-meta { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
.case-meta dt {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 6px;
}
.case-meta dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
  line-height: 1.4;
}

/* Full-bleed feature image */
.case-feature {
  position: relative;
  z-index: 2;
  margin-block: 40px;
}
.case-feature .ph--feature {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #d4c4a3 0%, #6b4d2e 100%);
  display: flex;
  align-items: flex-end;
  padding: 32px clamp(20px, 4vw, 56px);
  color: rgba(244,237,225,0.65);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.case-feature__img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* The brief */
.case-brief {
  padding-block: clamp(64px, 8vw, 112px);
  border-top: 1px solid var(--rule-soft);
}
.case-brief .container {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: clamp(40px, 6vw, 96px);
}
@media (max-width: 880px) {
  .case-brief .container { grid-template-columns: 1fr; gap: 32px; }
}
.case-brief h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 8px 0 0;
}
.case-brief h2 em { color: var(--walnut); font-style: italic; }
.case-brief__body p {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-2);
  margin: 0 0 18px;
  max-width: 64ch;
}
.case-brief__body p:first-child::first-letter {
  font-family: var(--serif);
  font-size: 4em;
  line-height: 0.8;
  float: left;
  margin: 10px 14px 0 -3px;
  color: var(--walnut);
  font-weight: 500;
}
.case-credits {
  margin: 40px 0 0;
  padding-top: 32px;
  border-top: 1px solid var(--rule-soft);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 540px) {
  .case-credits { grid-template-columns: 1fr; gap: 14px; }
}
.case-credits dt {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 4px;
}
.case-credits dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
}

/* Materials */
.case-materials {
  background: var(--paper-soft);
  padding-block: clamp(72px, 8vw, 120px);
  border-top: 1px solid var(--rule-soft);
}
.case-materials h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 8px 0 48px;
}
.case-materials h2 em { color: var(--walnut); font-style: italic; }
.case-materials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 56px);
}
@media (max-width: 880px) {
  .case-materials__grid { grid-template-columns: 1fr; gap: 32px; }
}
.case-materials__grid > div {
  padding-top: 24px;
  border-top: 1px solid var(--walnut);
}
.case-materials__grid h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--ink);
}
.case-materials__grid p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

/* Process gallery */
.case-process {
  padding-block: clamp(72px, 8vw, 120px);
  border-top: 1px solid var(--rule-soft);
}
.case-process h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 8px 0 48px;
}
.case-process h2 em { color: var(--walnut); font-style: italic; }
.case-process__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 880px) {
  .case-process__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
.case-process__item .ph {
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, #d4c4a3 0%, #9c8261 100%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  color: rgba(255,255,255,0.85);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.case-process__item .ph.alt2 { background: linear-gradient(135deg, #b8a280 0%, #6e553b 100%); }
.case-process__item .ph.alt3 { background: linear-gradient(135deg, #c4a98a 0%, #8a6e4b 100%); }
.case-process__item .ph.alt4 { background: linear-gradient(135deg, #a89070 0%, #5c4326 100%); }
.case-process__img {
  display: block;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.case-process__item .caption {
  margin: 12px 0 0;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* Install reveal */
.case-install {
  padding-block: clamp(72px, 8vw, 120px) 0;
  border-top: 1px solid var(--rule-soft);
}
.case-install h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 8px 0 48px;
}
.case-install h2 em { color: var(--walnut); font-style: italic; }
.case-install__feature {
  margin-block: 0 48px;
}
.case-install__feature .ph {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #5c4326 0%, #2a1d10 100%);
  display: flex;
  align-items: flex-end;
  padding: 32px clamp(20px, 4vw, 56px);
  color: rgba(244,237,225,0.55);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.case-install__feature-img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.case-install__detail {
  display: block;
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.case-install__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-bottom: clamp(72px, 8vw, 120px);
}
@media (max-width: 720px) {
  .case-install__grid { grid-template-columns: 1fr; gap: 16px; }
}
.case-install__grid .ph {
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, #d4c4a3 0%, #9c8261 100%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  color: rgba(255,255,255,0.85);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.case-install__grid .ph.alt2 { background: linear-gradient(135deg, #b8a280 0%, #6e553b 100%); }
.case-install__grid .ph.alt3 { background: linear-gradient(135deg, #c4a98a 0%, #8a6e4b 100%); }

/* Pull quote */
.case-quote {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(80px, 10vw, 140px);
}
.case-quote blockquote {
  margin: 0 auto;
  max-width: 56ch;
  font-family: var(--serif);
  font-size: clamp(22px, 2.4vw, 34px);
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--paper);
  font-style: italic;
}
.case-quote blockquote::before {
  content: "“";
  display: block;
  font-size: 3em;
  line-height: 0;
  color: var(--brass);
  font-style: normal;
  margin-bottom: 32px;
}
.case-quote__attr {
  margin: 32px 0 0;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
}

/* Next project nav */
.case-next {
  padding-block: clamp(40px, 5vw, 64px);
  border-top: 1px solid var(--rule-soft);
}
.case-next__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.case-next__nav a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 4px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.case-next__nav a:hover {
  color: var(--walnut);
  border-bottom-color: var(--walnut);
}
@media (max-width: 540px) {
  .case-next__nav { flex-direction: column; gap: 16px; align-items: flex-start; }
}

/* CTA strip */
.case-cta {
  padding-block: clamp(80px, 10vw, 140px);
  border-top: 1px solid var(--rule-soft);
  text-align: center;
}
.case-cta h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  color: var(--ink);
}
.case-cta p {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink-2);
  margin: 0 0 32px;
}
.case-cta .hero__cta { display: inline-flex; margin-bottom: 0; }