/* =========================================================================
   STUDIO NINE — CASE STUDY TEMPLATE
   ========================================================================= */

.s9-cs-hero {
  padding-top: calc(var(--s9-header-h) + clamp(3rem, 6vw, 6rem));
  padding-bottom: clamp(2rem, 4vw, 4rem);
}
/* Back-to-Work pill — mirrors the journal page's "All articles" button so
   the navigation pattern across long-form pages is consistent. The display:
   inline-flex stops the link stretching full-width and the margin-bottom
   keeps a clear breathing gap between the pill and the "Case 00 · YYYY"
   meta line that follows. */
.s9-cs-hero__back {
  display: inline-flex;
  align-items: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}
.s9-cs-hero__back .s9-btn__arrow--back { margin-right: 0.4em; }

/* Full-bleed cover image directly under the metadata bar. Sized to 100vh so
   the image lands like a film title sequence — quiet, considered, with the
   meta lifted above it. The image is set off from the hero meta by a generous
   gap, then runs edge-to-edge regardless of any outer container width. */
.s9-cs-cover {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  height: 100vh;
  max-height: 900px;
  min-height: 480px;
  overflow: hidden;
  background: var(--s9-bg-2, #efedea);
}
.s9-cs-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transform: scale(1.04);
  transition: transform 1200ms var(--s9-ease-out, cubic-bezier(0.2, 0.8, 0.2, 1));
}
/* Subtle slow zoom on reveal — Ken Burns, but restrained. */
.s9-cs-cover.is-revealed img,
.s9-cs-cover[data-reveal].is-in img {
  transform: scale(1.0);
}
/* Tiny tint at the bottom so the next section's text doesn't feel like it
   collides into a hard image edge. */
.s9-cs-cover::after {
  content: "";
  position: absolute; inset: auto 0 0 0;
  height: 16%;
  background: linear-gradient(to bottom, rgba(239, 237, 234, 0) 0%, rgba(239, 237, 234, 1) 100%);
  pointer-events: none;
}
/* Mobile — slightly shorter so the image isn't disorienting on phones. */
@media (max-width: 760px) {
  .s9-cs-cover { height: 70vh; max-height: 640px; min-height: 360px; }
}
.s9-cs-hero__num {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-sm);
  color: var(--s9-mute);
  letter-spacing: 0.08em;
  margin-bottom: var(--s9-space-3);
}
.s9-cs-hero__title {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 8vw, 8rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  padding-block: 0.08em;
}
.s9-cs-hero__tagline {
  font-family: var(--s9-font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 2.8vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--s9-fg-mute);
  max-width: 30ch;
  margin-top: var(--s9-space-5);
}
.s9-cs-hero__tagline em {
  color: var(--s9-accent-text);
  font-family: var(--s9-font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.06em;
}

.s9-cs-meta {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--s9-gutter);
  border-top: 1px solid var(--s9-line);
  border-bottom: 1px solid var(--s9-line);
  padding-block: var(--s9-space-5);
  margin-block: clamp(3rem, 6vw, 5rem);
}
@media (max-width: 900px) { .s9-cs-meta { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .s9-cs-meta { grid-template-columns: 1fr; } }
.s9-cs-meta dt {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-mute);
  margin-bottom: var(--s9-space-2);
}
.s9-cs-meta dd {
  font-size: var(--s9-size-base);
  color: var(--s9-fg);
  line-height: 1.4;
}

/* Hero image */
.s9-cs-hero-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--s9-bg-2);
  border-radius: var(--s9-r-md);
  overflow: hidden;
  margin-bottom: clamp(3rem, 6vw, 6rem);
}
.s9-cs-hero-image .s9-placeholder { aspect-ratio: 16 / 9; }

/* Section blocks */
.s9-cs-block {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(2rem, 4vw, 5rem);
  padding-block: clamp(3rem, 5vw, 5rem);
  border-bottom: 1px solid var(--s9-line);
}
@media (max-width: 760px) {
  .s9-cs-block { grid-template-columns: 1fr; gap: var(--s9-space-4); }
}
.s9-cs-block__label {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-mute);
  position: sticky;
  top: calc(var(--s9-header-h) + 2rem);
  align-self: start;
}
@media (max-width: 760px) { .s9-cs-block__label { position: static; } }
.s9-cs-block__heading {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(1.625rem, 3vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-bottom: var(--s9-space-5);
  padding-block: 0.04em;
}
.s9-cs-block__body {
  font-size: var(--s9-size-lg);
  line-height: 1.55;
  color: var(--s9-fg-mute);
  max-width: 60ch;
}
.s9-cs-block__body p + p { margin-top: var(--s9-space-4); }

/* Approach moves */
.s9-cs-moves {
  display: flex; flex-direction: column;
  margin-top: var(--s9-space-6);
  border-top: 1px solid var(--s9-line);
}
.s9-cs-move {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--s9-space-4);
  padding-block: var(--s9-space-4);
  border-bottom: 1px solid var(--s9-line);
}
.s9-cs-move__num {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-sm);
  color: var(--s9-accent-text);
}
.s9-cs-move__title {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: var(--s9-size-xl);
  letter-spacing: -0.02em;
  margin-bottom: var(--s9-space-2);
}
.s9-cs-move__desc {
  font-size: var(--s9-size-base);
  line-height: 1.55;
  color: var(--s9-fg-mute);
}

/* Gallery */
.s9-cs-gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--s9-gutter);
  padding-block: clamp(3rem, 6vw, 6rem);
}
.s9-cs-gallery__item {
  background: var(--s9-bg-2);
  border-radius: var(--s9-r-md);
  overflow: hidden;
}
.s9-cs-gallery__item--full { grid-column: span 12; aspect-ratio: 16 / 9; }
.s9-cs-gallery__item--half { grid-column: span 6; aspect-ratio: 4 / 3; }
.s9-cs-gallery__item--third { grid-column: span 4; aspect-ratio: 1 / 1; }
@media (max-width: 900px) {
  .s9-cs-gallery__item--half { grid-column: span 12; aspect-ratio: 4 / 3; }
  .s9-cs-gallery__item--third { grid-column: span 6; }
}

/* Outcome */
.s9-cs-outcome {
  background: var(--s9-light-bg);
  color: var(--s9-light-fg);
  padding-block: clamp(4rem, 8vw, 8rem);
}
.s9-cs-outcome__head {
  margin-bottom: clamp(3rem, 5vw, 5rem);
}
.s9-cs-outcome__heading {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  padding-block: 0.04em;
}
.s9-cs-outcome__heading em {
  font-family: var(--s9-font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--s9-accent-ink);
  background: var(--s9-accent);
  padding: 0 0.18em 0.06em;
  margin: 0 -0.05em;
  display: inline-block;
  font-size: 1.06em;
  line-height: 0.9;
}
.s9-cs-outcome__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--s9-light-line);
  border-bottom: 1px solid var(--s9-light-line);
}
@media (max-width: 760px) {
  .s9-cs-outcome__grid { grid-template-columns: 1fr; }
  .s9-cs-outcome__metric { border-bottom: 1px solid var(--s9-light-line); border-right: 0 !important; }
  .s9-cs-outcome__metric:last-child { border-bottom: 0; }
}
.s9-cs-outcome__metric {
  padding: clamp(2rem, 4vw, 3rem);
  border-right: 1px solid var(--s9-light-line);
}
.s9-cs-outcome__metric:last-child { border-right: 0; }
.s9-cs-outcome__metric-num {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 5.5vw, 5rem);
  line-height: 1;
  letter-spacing: -0.035em;
  display: block;
  color: var(--s9-light-fg);
  margin-bottom: var(--s9-space-2);
  padding-block: 0.04em;
}
.s9-cs-outcome__metric-label {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-light-mute);
}

/* Pull quote */
.s9-cs-quote {
  padding-block: clamp(4rem, 8vw, 8rem);
  text-align: left;
  max-width: 1100px;
  margin-inline: auto;
}
.s9-cs-quote blockquote {
  font-family: var(--s9-font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 4vw, 3.25rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--s9-fg);
}
.s9-cs-quote blockquote span { color: var(--s9-accent-text); }
.s9-cs-quote cite {
  display: flex; flex-direction: column;
  gap: var(--s9-space-1);
  margin-top: var(--s9-space-6);
  font-style: normal;
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-sm);
}
.s9-cs-quote cite strong { color: var(--s9-fg); font-weight: 500; }
.s9-cs-quote cite span { color: var(--s9-mute); }

/* Credits */
.s9-cs-credits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s9-gutter);
  padding-block: clamp(3rem, 5vw, 5rem);
  border-top: 1px solid var(--s9-line);
}
.s9-cs-credits--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 760px) { .s9-cs-credits, .s9-cs-credits--two { grid-template-columns: 1fr; } }
.s9-cs-credits__col p:first-child {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-mute);
  margin-bottom: var(--s9-space-3);
}
.s9-cs-credits__col ul {
  display: flex; flex-direction: column;
  gap: var(--s9-space-2);
  font-size: var(--s9-size-base);
  color: var(--s9-fg);
}

/* Next case */
.s9-cs-next {
  padding-block: clamp(4rem, 8vw, 8rem);
  border-top: 1px solid var(--s9-line);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s9-gutter);
  flex-wrap: wrap;
}
.s9-cs-next__label {
  font-family: var(--s9-font-mono);
  font-size: var(--s9-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--s9-mute);
  margin-bottom: var(--s9-space-3);
}
.s9-cs-next__link {
  font-family: var(--s9-font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5.5vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--s9-fg);
  display: inline-flex;
  align-items: baseline;
  gap: var(--s9-space-3);
  transition: color var(--s9-d-base) var(--s9-ease);
  padding-block: 0.04em;
  flex-wrap: wrap;
}
.s9-cs-next__link:hover { color: var(--s9-accent-text); }
.s9-cs-next__link::after {
  content: "→";
  font-size: 0.6em;
  color: var(--s9-accent-text);
  transition: transform var(--s9-d-fast) var(--s9-ease);
}
.s9-cs-next__link:hover::after { transform: translateX(8px); }