/* ─────────────────────────────────────────────
   CASE STUDY PAGE
   Uncluttered, easy to scan layout
───────────────────────────────────────────── */

.case-study-page {
  padding-bottom: 0;
}

.case-study {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 40px 64px;
}

/* Hero */
.case-study-hero {
  padding: 48px 0 56px;
  border-bottom: 1px solid var(--grey-4);
}

.case-study-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Landing effect — initial state (before .case-study-landed) */
.case-study-hero-inner > * {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.case-study-landed .case-study-hero-inner > * {
  opacity: 1;
  transform: translateY(0);
}

.case-study-hero-inner > .case-study-meta       { transition-delay: 0.05s; }
.case-study-hero-inner > .case-study-title     { transition-delay: 0.12s; }
.case-study-hero-inner > .case-study-kpi-tile  { transition-delay: 0.2s; }
.case-study-hero-inner > .case-study-hero-images { transition-delay: 0.32s; }

.case-study-meta {
  font-size: 12px;
  font-weight: 500;
  color: var(--grey-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-study-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--black);
}

/* KPI tile — over the fold */
.case-study-kpi-tile {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid var(--black);
  border-radius: var(--radius);
  width: 100%;
}

.case-study-kpi-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  text-align: left;
}

.case-study-kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 72px;
  max-width: 600px;
  margin: 0 auto;
}

.case-study-kpi-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-start;
  text-align: left;
}

.case-study-kpi-col:first-child .case-study-kpi-line {
  white-space: nowrap;
}

.case-study-kpi-line {
  font-size: 14px;
  font-weight: 700;
  color: var(--black);
  margin: 0;
  line-height: 1.4;
}

.case-study-kpi-sub {
  font-weight: 700;
  color: var(--black);
}

.case-study-hero-images {
  margin-top: 28px;
}

.case-study-hero-images img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--grey-4);
}

/* Big figures: full width of content for legibility */
.case-study-fig-big {
  margin-top: 28px;
  width: 100%;
  max-width: 100%;
}

.case-study-fig-big img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--grey-4);
  display: block;
}

/* Michelin benchmark: container sizes to image, centered */
.case-study--benchmark .case-study-fig-big {
  width: max-content;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}
.case-study--benchmark .case-study-fig-big img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
}
.case-study--benchmark .case-study-fig-big figcaption {
  text-align: center;
}

/* Body sections */
.case-study-body {
  padding-top: 48px;
}

.case-study-block {
  margin-bottom: 56px;
}

.case-study-block:last-of-type {
  margin-bottom: 48px;
}

.case-study-h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-bottom: 14px;
}

.case-study-h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--black);
  margin-top: 32px;
  margin-bottom: 10px;
}

.case-study-lead,
.case-study-block p {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 15px;
  color: var(--grey-1);
  line-height: 1.7;
  margin-bottom: 12px;
}

.case-study-block p:last-child {
  margin-bottom: 0;
}

.case-study-list {
  margin: 12px 0 0 1em;
  padding-left: 1.25em;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 15px;
  color: var(--grey-1);
  line-height: 1.7;
  list-style-position: outside;
}

.case-study-list li {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 15px;
  color: var(--grey-1);
  line-height: 1.7;
  margin-bottom: 8px;
}

.case-study-list li:last-child {
  margin-bottom: 0;
}

.case-study-list li::marker {
  color: var(--grey-1);
}

/* Split: text + image side by side */
.case-study-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.case-study-split-text .case-study-h2 {
  margin-top: 0;
}

.case-study-split-fig {
  margin: 0;
  position: sticky;
  top: 80px;
}

.case-study-split-fig img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--grey-4);
}

.case-study-split-fig--no-border img {
  border: none;
}

/* Split figure that scrolls with content (no sticky) */
.case-study-split-fig--static {
  position: static;
}

/* Full-width figures */
.case-study-fig {
  margin: 24px 0 0;
}

.case-study-fig img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--grey-4);
}

.case-study-fig figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--grey-2);
  line-height: 1.5;
}

/* Image placeholder — reserve space for images to be added later */
.case-study-img-placeholder {
  width: 100%;
  min-height: 320px;
  background: var(--grey-5);
  border: 1px dashed var(--grey-4);
  border-radius: var(--radius);
}

/* Embedded mockup iframe */
.case-study-mockup-wrap {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--grey-4);
  background: var(--white);
}
.case-study-mockup-iframe {
  width: 100%;
  height: 580px;
  border: none;
  display: block;
}

.case-study-fig-wide {
  max-width: 100%;
}

/* Gallery: 2 columns */
.case-study-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.case-study-gallery-2 {
  grid-template-columns: repeat(2, 1fr);
}

.case-study-gallery .case-study-fig {
  margin: 0;
}

.case-study-gallery .case-study-fig-wide {
  grid-column: 1 / -1;
}

/* Gallery with fixed 390px-wide mockups (e.g. mobile screens) */
.case-study-gallery--390 {
  grid-template-columns: repeat(2, 390px);
  justify-content: center;
  gap: 24px;
}

.case-study-gallery--390 .case-study-fig {
  margin: 0;
}

.case-study-gallery--390 .case-study-fig img {
  width: 390px;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.case-study-gallery--390 .case-study-fig-wide {
  grid-column: 1;
  display: flex;
  justify-content: flex-start;
}

.case-study-gallery--390 .case-study-fig-wide img {
  margin: 0;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

/* Take-away: no separation from previous section */
.case-study-takeaway {
  /* no border or extra padding — flows after Results and metrics */
}

/* You may also like — up to 4 tiles on a single line, never wrap */
.case-study-also {
  margin-top: 56px;
  margin-bottom: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--grey-4);
}

.case-study-also-title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-3);
  margin-bottom: 16px;
}

.case-study-also-grid {
  display: flex;
  flex-wrap: nowrap;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.case-study-also-tile {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--grey-4);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
  flex: 1 1 0;
  min-width: 160px;
  max-width: 220px;
}

.case-study-also-tile:hover {
  border-color: var(--grey-3);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
}

.case-study-also-tile-img-wrap {
  aspect-ratio: 16 / 10;
  background: var(--grey-5);
  overflow: hidden;
}

.case-study-also-tile-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}

.case-study-also-tile-content {
  padding: 10px 12px;
}

.case-study-also-tile-meta {
  font-size: 10px;
  font-weight: 500;
  color: var(--grey-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.case-study-also-tile-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--black);
  line-height: 1.3;
}

/* Back link */
.case-study-footer {
  padding: 32px 0 40px;
  border-top: 1px solid var(--grey-4);
}

.case-study-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--grey-1);
  transition: color 0.18s;
}

.case-study-back:hover {
  color: var(--black);
}

.case-study-back svg {
  width: 16px;
  height: 16px;
}

/* Responsive */
@media (max-width: 760px) {
  .case-study {
    padding: 0 20px 48px;
  }

  .case-study-hero {
    padding: 32px 0 40px;
  }

  .case-study-kpi-tile {
    padding: 14px 18px;
  }

  .case-study-kpi-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .case-study-body {
    padding-top: 36px;
  }

  .case-study-block {
    margin-bottom: 44px;
  }

  .case-study-split {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .case-study-split-fig {
    position: static;
  }

  .case-study-gallery {
    grid-template-columns: 1fr;
  }

  .case-study-gallery--390 {
    grid-template-columns: 1fr;
  }
}

/* ─────────────────────────────────────────────
   DARK MODE — case study pages (matches styles.css theme)
───────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  html:not(.theme-light) .case-study-hero {
    border-bottom-color: rgba(255,255,255,0.08);
  }
  html:not(.theme-light) .case-study-meta { color: #707078; }
  html:not(.theme-light) .case-study-title { color: #f0f0f2; }
  html:not(.theme-light) .case-study-kpi-tile {
    background: #111114;
    border-color: rgba(255,255,255,0.2);
  }
  html:not(.theme-light) .case-study-kpi-title,
  html:not(.theme-light) .case-study-kpi-line,
  html:not(.theme-light) .case-study-kpi-sub { color: #e8e8ea; }
  html:not(.theme-light) .case-study-hero-images img,
  html:not(.theme-light) .case-study-fig-big img,
  html:not(.theme-light) .case-study-fig img,
  html:not(.theme-light) .case-study-split-fig img {
    border-color: rgba(255,255,255,0.12);
  }
  html:not(.theme-light) .case-study-h2,
  html:not(.theme-light) .case-study-h3 { color: #f0f0f2; }
  html:not(.theme-light) .case-study-lead,
  html:not(.theme-light) .case-study-block p,
  html:not(.theme-light) .case-study-list,
  html:not(.theme-light) .case-study-list li,
  html:not(.theme-light) .case-study-list li::marker { color: #a0a0a8; }
  html:not(.theme-light) .case-study-fig figcaption { color: #888892; }
  html:not(.theme-light) .case-study-img-placeholder {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.12);
  }
  html:not(.theme-light) .case-study-mockup-wrap {
    border-color: rgba(255,255,255,0.12);
    background: #0f0f12;
  }
  html:not(.theme-light) .case-study-takeaway,
  html:not(.theme-light) .case-study-also,
  html:not(.theme-light) .case-study-footer {
    border-top-color: rgba(255,255,255,0.08);
  }
  html:not(.theme-light) .case-study-also-title { color: #707078; }
  html:not(.theme-light) .case-study-also-tile {
    border-color: rgba(255,255,255,0.08);
    background: #111114;
  }
  html:not(.theme-light) .case-study-also-tile:hover {
    border-color: rgba(255,255,255,0.14);
    box-shadow: 0 6px 24px rgba(0,0,0,0.35);
  }
  html:not(.theme-light) .case-study-also-tile-img-wrap { background: rgba(255,255,255,0.06); }
  html:not(.theme-light) .case-study-also-tile-meta { color: #707078; }
  html:not(.theme-light) .case-study-also-tile-title { color: #e8e8ea; }
  html:not(.theme-light) .case-study-back { color: #a0a0a8; }
  html:not(.theme-light) .case-study-back:hover { color: #e8e8ea; }
}

html.dark-mode .case-study-hero {
  border-bottom-color: rgba(255,255,255,0.08);
}
html.dark-mode .case-study-meta { color: #707078; }
html.dark-mode .case-study-title { color: #f0f0f2; }
html.dark-mode .case-study-kpi-tile {
  background: #111114;
  border-color: rgba(255,255,255,0.2);
}
html.dark-mode .case-study-kpi-title,
html.dark-mode .case-study-kpi-line,
html.dark-mode .case-study-kpi-sub { color: #e8e8ea; }
html.dark-mode .case-study-hero-images img,
html.dark-mode .case-study-fig-big img,
html.dark-mode .case-study-fig img,
html.dark-mode .case-study-split-fig img {
  border-color: rgba(255,255,255,0.12);
}
html.dark-mode .case-study-h2,
html.dark-mode .case-study-h3 { color: #f0f0f2; }
html.dark-mode .case-study-lead,
html.dark-mode .case-study-block p,
html.dark-mode .case-study-list,
html.dark-mode .case-study-list li,
html.dark-mode .case-study-list li::marker { color: #a0a0a8; }
html.dark-mode .case-study-fig figcaption { color: #888892; }
html.dark-mode .case-study-img-placeholder {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.12);
}
html.dark-mode .case-study-mockup-wrap {
  border-color: rgba(255,255,255,0.12);
  background: #0f0f12;
}
html.dark-mode .case-study-takeaway,
html.dark-mode .case-study-also,
html.dark-mode .case-study-footer {
  border-top-color: rgba(255,255,255,0.08);
}
html.dark-mode .case-study-also-title { color: #707078; }
html.dark-mode .case-study-also-tile {
  border-color: rgba(255,255,255,0.08);
  background: #111114;
}
html.dark-mode .case-study-also-tile:hover {
  border-color: rgba(255,255,255,0.14);
  box-shadow: 0 6px 24px rgba(0,0,0,0.35);
}
html.dark-mode .case-study-also-tile-img-wrap { background: rgba(255,255,255,0.06); }
html.dark-mode .case-study-also-tile-meta { color: #707078; }
html.dark-mode .case-study-also-tile-title { color: #e8e8ea; }
html.dark-mode .case-study-back { color: #a0a0a8; }
html.dark-mode .case-study-back:hover { color: #e8e8ea; }