/* ==========================================================================
   Case Studies (list + single) - premium upgrade.
   Scoped to .cs-page. No !important.
   ========================================================================== */

.cs-page {
  --cs-bg: #07070b;
  --cs-card: rgba(255, 255, 255, 0.035);
  --cs-card-hover: rgba(255, 255, 255, 0.06);
  --cs-border: rgba(255, 255, 255, 0.08);
  --cs-border-hover: rgba(196, 181, 253, 0.45);
  --cs-text: #f5f5f7;
  --cs-text-muted: #a8a8b3;
  --cs-accent: #c4b5fd;
  --cs-accent-strong: #a78bfa;
  --cs-success: #7AB55C;
}

/* --------- LISTING HERO --------- */
.cs-page .cs-listing-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #050508 0%, #0a0a12 100%);
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
  isolation: isolate;
}
.cs-page .cs-listing-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 50% 35% at 22% 28%, rgba(196, 181, 253, 0.18), transparent 70%),
    radial-gradient(ellipse 60% 40% at 78% 72%, rgba(122, 181, 92, 0.10), transparent 70%);
}
.cs-page .cs-listing-hero > .container { position: relative; z-index: 1; }
.cs-page .cs-listing-hero .section-header { text-align: center; max-width: 64ch; margin: 0 auto 2rem; }

.cs-page .cs-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.95rem;
  background: rgba(196, 181, 253, 0.08);
  border: 1px solid rgba(196, 181, 253, 0.25);
  color: var(--cs-accent);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.cs-page .cs-eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cs-success);
  flex-shrink: 0;
  box-shadow: 0 0 0 0 rgba(122, 181, 92, 0.7);
  animation: cs-pulse 2.4s infinite;
}
@keyframes cs-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.cs-page .cs-listing-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--cs-text);
  margin: 0 auto 1rem;
  max-width: 22ch;
}
.cs-page .cs-listing-hero h1 .accent,
.cs-page .cs-hero-accent {
  display: inline;
  background: linear-gradient(135deg, #c4b5fd 0%, #7AB55C 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.cs-page .cs-listing-hero .section-subtitle {
  color: var(--cs-text-muted);
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0 auto;
  max-width: 60ch;
}

/* --------- ROWS - chunks of 4 case-study cards each --------- */
.cs-page .cs-rows {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  background: var(--cs-bg);
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}
.cs-page .cs-carousel-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.cs-page .cs-carousel-row:not(:first-child) {
  position: relative;
  padding-top: 1.75rem;
}
.cs-page .cs-carousel-row:not(:first-child)::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196, 181, 253, 0.18), transparent);
}
@media (max-width: 980px) {
  .cs-page .cs-carousel-row { grid-template-columns: repeat(2, 1fr); }
}

/* Legacy alias kept for any caller still rendering .cs-card-grid */
.cs-page .cs-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: 1.5rem;
  background: var(--cs-bg);
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}
.cs-page .cs-card {
  display: flex;
  flex-direction: column;
  background: var(--cs-card);
  border: 1px solid var(--cs-border);
  border-radius: 18px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.cs-page .cs-card::before { content: none; }
.cs-page .cs-card:hover {
  background: var(--cs-card-hover);
  border-color: var(--cs-border-hover);
  transform: translateY(-3px);
  box-shadow: 0 14px 40px -16px rgba(196, 181, 253, 0.25);
}
.cs-page .cs-card-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.4);
}
.cs-page .cs-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.cs-page .cs-card:hover .cs-card-thumb img { transform: scale(1.04); }

.cs-page .cs-card-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.25rem 1.4rem 0;
  flex-wrap: wrap;
}
.cs-page .cs-card-industry {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cs-accent);
  background: transparent;
  padding: 0;
  border-radius: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.35;
  max-width: 100%;
}
.cs-page .cs-card-anon {
  display: none;
}
.cs-page .cs-card-anon {
  font-size: 0.7rem;
  color: var(--cs-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.cs-page .cs-card-title {
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--cs-text);
  margin: 0.65rem 1.4rem 0.45rem;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3em;
}
.cs-page .cs-card:hover .cs-card-title { color: var(--cs-accent); }
.cs-page .cs-card-desc {
  color: var(--cs-text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0 1.4rem 1rem;
  flex: 1 0 auto;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Listing cards: ONE headline metric only (the full 3-metric panel
   lives on the case-study single page where there is real estate). */
.cs-page .cs-card-headline-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  margin: 0 1.25rem 1rem;
  padding: 0.85rem 1rem;
  background: rgba(196, 181, 253, 0.06);
  border: 1px solid rgba(196, 181, 253, 0.22);
  border-left: 3px solid var(--cs-accent);
  border-radius: 0 10px 10px 0;
  text-align: center;
}
.cs-page .cs-card-headline-val {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--cs-text);
  letter-spacing: -0.015em;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.cs-page .cs-card-headline-lbl {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cs-text-muted);
  line-height: 1.3;
}

/* Legacy 3-metric panel kept for case-study single page hero use */
.cs-page .cs-card-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem 0.85rem;
  margin: 0 1.25rem 1rem;
  padding: 0.85rem 1rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--cs-border);
  border-radius: 10px;
}
.cs-page .cs-card-metric { text-align: center; min-width: 0; }
.cs-page .cs-card-metric:nth-child(3):last-child { grid-column: 1 / -1; }
.cs-page .cs-card-metric-val {
  display: block;
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--cs-text);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 0.3rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: keep-all;
  overflow-wrap: normal;
}
.cs-page .cs-card-metric-lbl {
  display: block;
  font-size: 0.7rem;
  color: var(--cs-text-muted);
  font-weight: 500;
  line-height: 1.25;
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

.cs-page .cs-card-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cs-accent);
  margin: 0 1.4rem 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
}

/* --------- LIST CLOSING CTA --------- */
.cs-page .section-cta-final {
  background: var(--cs-bg);
  padding: clamp(3rem, 5vw, 4.5rem) 0 clamp(4rem, 7vw, 6rem);
}
.cs-page .cta-final {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 0% 100%, rgba(122, 181, 92, 0.18), transparent 70%),
    radial-gradient(ellipse 50% 60% at 100% 0%, rgba(196, 181, 253, 0.22), transparent 70%),
    linear-gradient(135deg, rgba(15, 15, 20, 0.6) 0%, rgba(20, 16, 32, 0.5) 100%);
  border: 1px solid rgba(196, 181, 253, 0.3);
  border-radius: 24px;
  padding: clamp(2rem, 4vw, 3rem);
  text-align: center;
  box-shadow: 0 30px 80px -40px rgba(196, 181, 253, 0.35);
}
.cs-page .cta-final h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.018em;
  color: var(--cs-text);
  margin: 0 0 0.85rem;
}
.cs-page .cta-final p {
  color: var(--cs-text-muted);
  font-size: 0.98rem;
  line-height: 1.65;
  max-width: 56ch;
  margin: 0 auto 1.75rem;
}

/* --------- SINGLE PAGE --------- */
.cs-page .case-study-article {
  background: var(--cs-bg);
}
.cs-page .case-study-article a {
  color: var(--cs-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.cs-page .case-study-article h2,
.cs-page .case-study-article h3 {
  color: var(--cs-text);
  letter-spacing: -0.015em;
}

/* Related posts grid - premium card chrome */
.cs-page .related-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: 1.25rem;
}
.cs-page .related-post-card {
  background: var(--cs-card);
  border: 1px solid var(--cs-border);
  border-radius: 14px;
  padding: 1.25rem 1.4rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.cs-page .related-post-card:hover {
  background: var(--cs-card-hover);
  border-color: var(--cs-border-hover);
  transform: translateY(-2px);
}
.cs-page .related-post-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--cs-text);
  margin: 0 0 0.5rem;
  line-height: 1.35;
}
.cs-page .related-post-card:hover h3 { color: var(--cs-accent); }
.cs-page .related-post-card p {
  color: var(--cs-text-muted);
  font-size: 0.88rem;
  line-height: 1.55;
  margin: 0;
}

/* --------- MOBILE CAROUSELS ---------
   Each row of 4 case-study cards becomes a horizontal scroll-snap rail. */
@media (max-width: 768px) {
  .cs-page .cs-carousel-row,
  .cs-page .cs-card-grid,
  .cs-page .related-posts-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 1rem;
    gap: 1rem;
    margin-inline: -1rem;
    padding: 0.25rem 1rem 1.25rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(196, 181, 253, 0.35) transparent;
  }
  .cs-page .cs-carousel-row > *,
  .cs-page .cs-card-grid > *,
  .cs-page .related-posts-grid > * {
    flex: 0 0 min(86%, 360px);
    min-width: 240px;
    max-width: 360px;
    scroll-snap-align: start;
    scroll-margin-inline: 1rem;
  }
  .cs-page .cs-carousel-row::-webkit-scrollbar,
  .cs-page .cs-card-grid::-webkit-scrollbar,
  .cs-page .related-posts-grid::-webkit-scrollbar { height: 4px; }
  .cs-page .cs-carousel-row::-webkit-scrollbar-thumb,
  .cs-page .cs-card-grid::-webkit-scrollbar-thumb,
  .cs-page .related-posts-grid::-webkit-scrollbar-thumb {
    background: rgba(196, 181, 253, 0.35);
    border-radius: 4px;
  }
  .cs-page .cs-carousel-row:not(:first-child) { padding-top: 1rem; }
  .cs-page .cs-carousel-row:not(:first-child)::before { inset: 0 1rem auto 1rem; }
}

/* Per-row card stagger — each .cs-carousel-row is the IO target.
   Cards inside fade in (opacity only) sequentially when the row reveals.
   Restart on each row so the rhythm doesn't drift across the page. */
.cs-page .cs-carousel-row > .cs-card {
  opacity: 0;
  transition-property: opacity;
  transition-duration: 500ms;
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}
.cs-page .cs-carousel-row.visible > .cs-card { opacity: 1; }
.cs-page .cs-carousel-row.visible > .cs-card:nth-child(2) { transition-delay: 80ms; }
.cs-page .cs-carousel-row.visible > .cs-card:nth-child(3) { transition-delay: 160ms; }

/* Read-arrow translate on hover — only on devices that can hover.
   The arrow lives in its own span so it can move without dragging the label. */
.cs-page .cs-card-link-arrow {
  display: inline-block;
  margin-left: 0.35rem;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
@media (hover: hover) and (pointer: fine) {
  .cs-page .cs-card:hover .cs-card-link-arrow { transform: translateX(4px); }
}

.kf-bfcache .cs-page .cs-carousel-row > .cs-card { transition: none; }

@media (prefers-reduced-motion: reduce) {
  .cs-page .cs-eyebrow::before,
  .cs-page .cs-card,
  .cs-page .cs-card-thumb img,
  .cs-page .cs-card-link-arrow,
  .cs-page .related-post-card { transition: none; animation: none; }
  .cs-page .cs-card:hover, .cs-page .related-post-card:hover { transform: none; }
  .cs-page .cs-carousel-row > .cs-card { opacity: 1; transition: none; }
  .cs-page .cs-card:hover .cs-card-link-arrow { transform: none; }
}