/* ─────────────────────────────────────────────
   Case study layout — extends styles.css tokens
   ───────────────────────────────────────────── */

:root { --cs-accent: var(--accent); }

/* ─── Case study nav (different from home tabbed nav) ─── */
.cs-nav__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 26px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cs-nav__back {
  font-family: 'Oswald', sans-serif;
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-meta);
  text-decoration: none;
  transition: color .25s, transform .25s;
}
.cs-nav__back:hover {
  color: var(--text);
  transform: translateX(-3px);
}

/* ─── Case study hero ─── */
.cs-hero {
  max-width: 1240px;
  margin: 0 auto;
  padding: 80px 48px 56px;
  position: relative;
}
.cs-hero__eyebrow {
  font-family: 'Oswald', sans-serif;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cs-accent);
  margin-bottom: 24px;
}
.cs-hero__title {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: clamp(44px, 6vw, 84px);
  line-height: 0.98;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  max-width: 980px;
}
.cs-hero__title em {
  color: var(--cs-accent);
  font-style: normal;
}
.cs-hero__lede {
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 720px;
  margin-top: 32px;
}
.cs-hero__meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.cs-hero__meta-label {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.cs-hero__meta-value {
  font-size: 16px;
  color: var(--text-soft);
  line-height: 1.5;
}

/* ─── Cover image ─── */
.cs-cover {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px 48px 40px;
}
.cs-cover__frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #1b3a5e;
}
.cs-cover__frame img {
  width: 100%;
  height: auto;
  display: block;
}

/* ─── Case study body container ─── */
.cs-body {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 48px 40px;
}

/* ─── Section block (label + content) ─── */
.cs-section {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  padding: 64px 0;
  border-top: 1px solid var(--border);
}
.cs-section--noborder { border-top: none; padding-top: 40px; }
.cs-section__label {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-meta);
}
.cs-section__label--faint { color: var(--text-faint); }
.cs-section__content { max-width: 880px; }
.cs-section__content--narrow { max-width: 820px; }

.cs-section__title {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.05;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.cs-section__title em {
  color: var(--cs-accent);
  font-style: normal;
}
.cs-section__title--gap { margin-bottom: 36px; }

.cs-section__sub {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: clamp(24px, 2.4vw, 32px);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.cs-section__sub em { color: var(--cs-accent); font-style: normal; }

.cs-section__lede {
  font-size: 20px;
  line-height: 1.7;
  color: var(--text-muted);
}
.cs-section__lede--gap { margin-bottom: 44px; }

.cs-section__p {
  font-size: 19px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.cs-section__p:last-child { margin-bottom: 0; }

.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 56px;
}
.cs-two-col p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-muted);
}
.cs-two-col__heading {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 24px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.cs-two-col__body {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ─── Pull quote ─── */
.cs-quote {
  margin-top: 44px;
  border-left: 3px solid var(--cs-accent);
  background: rgba(180, 157, 240, 0.06);
  padding: 26px 32px;
  border-radius: 0 8px 8px 0;
}
.cs-section .cs-quote { margin-top: 36px; }
.cs-quote p {
  font-style: italic;
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-soft);
}

/* ─── Caption ─── */
.cs-figure {
  padding: 8px 0 16px;
}
.cs-figure--last { padding-bottom: 40px; }
.cs-figure__frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #cfcfcf;
}
.cs-figure__frame img {
  width: 100%;
  height: auto;
  display: block;
}
.cs-figure__caption {
  font-size: 14px;
  color: var(--text-faint);
  margin-top: 14px;
}
.cs-figure__stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.cs-figure--padded .cs-figure__frame { padding: 28px; }

/* ─── Numbered process strip ─── */
.cs-process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: 1000px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
}
.cs-process__step {
  padding: 28px 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.cs-process__step:last-child { border-right: none; }
.cs-process__num {
  font-family: 'Oswald', sans-serif;
  font-weight: 300;
  font-size: 16px;
  color: var(--text-fainter);
  margin-bottom: 18px;
}
.cs-process__heading {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 19px;
  text-transform: uppercase;
  margin-bottom: 14px;
  line-height: 1.1;
}
.cs-process__body {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ─── Process strip — 2-column variant (2x2 grid) ─── */
.cs-process--cols-2 {
  grid-template-columns: 1fr 1fr;
}
.cs-process--cols-2 .cs-process__step {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.cs-process--cols-2 .cs-process__step:nth-child(2n) {
  border-right: none;
}
.cs-process--cols-2 .cs-process__step:nth-last-child(-n+2) {
  border-bottom: none;
}

/* ─── Process strip — 3-column variant (single row) ─── */
.cs-process--cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.cs-process__step-label {
  font-family: 'Oswald', sans-serif;
  font-weight: 300;
  font-size: 15px;
  color: var(--text-fainter);
  margin-bottom: 16px;
}

/* ─── Finding cards (pain point + opportunity) ─── */
.cs-findings {
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.cs-finding {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 34px 36px;
}
.cs-finding__label {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cs-accent);
  margin-bottom: 14px;
}
.cs-finding__title {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: clamp(22px, 2.2vw, 28px);
  text-transform: uppercase;
  margin-bottom: 20px;
  line-height: 1.1;
}
.cs-finding__quote {
  font-style: italic;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-dim);
  border-left: 2px solid rgba(180, 157, 240, 0.5);
  padding-left: 20px;
  margin-bottom: 28px;
}
.cs-finding__compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.cs-finding__col-label {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.cs-finding__col-label--pain { color: var(--cs-accent); }
.cs-finding__col-label--opp  { color: #6FCF8E; }
.cs-finding__col-body {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ─── Insights stack (sub-heading + paragraph blocks) ─── */
.cs-insights {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.cs-insights__heading {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 22px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.cs-insights__body {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ─── Feature cards (2x2 platform overview) ─── */
.cs-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cs-feature-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 28px 30px;
}
.cs-feature-card__label {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-accent);
  margin-bottom: 14px;
}
.cs-feature-card__heading {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 22px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.cs-feature-card__body {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ─── Feature walkthrough (image left, text right) ─── */
.cs-walk {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: center;
  padding: 24px 0;
}
.cs-walk--last { padding-bottom: 56px; }
.cs-walk__frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0d0e11;
}
.cs-walk__frame img {
  width: 100%;
  height: auto;
  display: block;
}
.cs-walk__tag {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-accent);
  margin-bottom: 14px;
}
.cs-walk__body {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ─── 3-column row inside a section (catalyst sub-strip) ─── */
.cs-strip-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
}
.cs-strip-3__cell {
  padding: 28px 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.cs-strip-3__cell:last-child { border-right: none; }
.cs-strip-3__heading {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 20px;
  text-transform: uppercase;
  margin-bottom: 14px;
  line-height: 1.1;
}
.cs-strip-3__body {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ─── 4-column value strip ─── */
.cs-value-label {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.cs-strip-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
}
.cs-strip-4__cell {
  padding: 24px 22px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.cs-strip-4__cell:last-child { border-right: none; }
.cs-strip-4__cell p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ─── Sprint pills (steps with arrow separators) ─── */
.cs-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.cs-pills__step {
  font-family: 'Oswald', sans-serif;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 40px;
  padding: 10px 20px;
}
.cs-pills__arrow {
  font-family: 'Oswald', sans-serif;
  color: var(--text-fainter);
}

/* ─── Dash-bullet list (themes / key points) ─── */
.cs-dash-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cs-dash-list li {
  font-size: 17px;
  line-height: 1.5;
  color: var(--text-muted);
  padding-left: 22px;
  position: relative;
}
.cs-dash-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--cs-accent);
}
.cs-dash-list__label {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-accent);
  margin-bottom: 16px;
}

/* ─── Insight quote list (border-left, no background fill) ─── */
.cs-insight-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.cs-insight-list p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-muted);
  border-left: 2px solid rgba(180, 157, 240, 0.5);
  padding-left: 22px;
}

/* ─── Outcomes / stat cards ─── */
.cs-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cs-stats--cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.cs-stat {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 30px 32px;
}
.cs-stat__label {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-accent);
  margin-bottom: 14px;
}
.cs-stat__heading {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 24px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.cs-stat__body {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ─── Next project banner ─── */
.cs-next {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.cs-next__link {
  display: block;
  text-decoration: none;
  color: inherit;
  max-width: 1240px;
  margin: 0 auto;
  padding: 72px 48px;
}
.cs-next__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  flex-wrap: wrap;
}
.cs-next__label {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-meta);
  margin-bottom: 16px;
}
.cs-next__title {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: clamp(34px, 4.5vw, 64px);
  text-transform: uppercase;
  line-height: 0.98;
  transition: color .25s;
}
.cs-next__arrow {
  font-family: 'Oswald', sans-serif;
  color: var(--cs-accent);
  font-size: 40px;
  transition: transform .3s var(--easing);
}
.cs-next__link:hover .cs-next__title { color: var(--cs-accent); }
.cs-next__link:hover .cs-next__arrow { transform: translate(6px, -6px); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .cs-nav__inner,
  .cs-hero,
  .cs-cover,
  .cs-body,
  .cs-next__link { padding-left: 24px; padding-right: 24px; }

  .cs-hero { padding-top: 56px; padding-bottom: 36px; }
  .cs-hero__meta { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .cs-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 48px 0;
  }
  .cs-section--noborder { padding-top: 16px; }

  .cs-two-col { grid-template-columns: 1fr; gap: 24px; }

  .cs-walk { grid-template-columns: 1fr; gap: 20px; padding: 20px 0; }
  .cs-walk--last { padding-bottom: 32px; }

  .cs-process,
  .cs-strip-3,
  .cs-strip-4 { grid-template-columns: 1fr; }
  .cs-process__step,
  .cs-strip-3__cell,
  .cs-strip-4__cell {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .cs-process__step:last-child,
  .cs-strip-3__cell:last-child,
  .cs-strip-4__cell:last-child { border-bottom: none; }

  .cs-features,
  .cs-stats { grid-template-columns: 1fr; }

  .cs-process--cols-2 { grid-template-columns: 1fr; }
  .cs-process--cols-2 .cs-process__step {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .cs-process--cols-2 .cs-process__step:last-child { border-bottom: none; }

  .cs-process--cols-3 { grid-template-columns: 1fr; }

  .cs-stats--cols-3 { grid-template-columns: 1fr; }

  .cs-finding { padding: 26px 22px; }
  .cs-finding__compare { grid-template-columns: 1fr; gap: 24px; }
}