/* ═══════════════════════════════════════════════════════════════
   NUDGEBEE — Case Studies Hub Page Styles
   Used by: /case-studies/index.html
   ═══════════════════════════════════════════════════════════════ */

/* ── Hero ── */
.csh-hero {
  padding: 120px var(--gutter) 56px;
  background: var(--off);
  position: relative;
  overflow: hidden;
}
.csh-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 90% 20%, rgba(250,200,53,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 40% 50% at 5% 80%, rgba(56,162,255,0.05) 0%, transparent 60%);
  pointer-events: none;
}
.csh-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}
.csh-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--fh);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--navy);
  background: var(--yellow);
  padding: 5px 14px;
  border-radius: var(--r-pill);
  margin-bottom: 24px;
}
.csh-hero-h {
  font-family: var(--fh);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 20px;
  max-width: 780px;
}
.csh-hero-h .hl-mark {
  display: inline-block;
  background: var(--yellow);
  padding: 0 10px;
  transform: none;
  border-radius: 4px;
}
.csh-hero-sub {
  font-family: var(--fb);
  font-size: 1.1rem;
  color: var(--ink-light);
  line-height: 1.7;
  max-width: 600px;
}

/* ── Filter bar ── */
.csh-filter-wrap {
  background: var(--off);
  padding: 0 var(--gutter) 40px;
}
.csh-filter {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.csh-filter-btn {
  font-family: var(--fb);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-light);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-pill);
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.csh-filter-btn:hover {
  border-color: var(--navy);
  color: var(--navy);
}
.csh-filter-btn.active {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

/* ── Case study grid ── */
.csh-catalog {
  padding: 0 var(--gutter) 96px;
  background: var(--off);
}
.csh-catalog-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* Featured card (full width) */
.csh-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  margin-bottom: 32px;
  transition: box-shadow 0.25s, border-color 0.25s;
}
.csh-featured:hover {
  border-color: var(--border-mid);
  box-shadow: 0 8px 40px rgba(27,45,74,0.1);
}
.csh-featured-img-wrap {
  position: relative;
  overflow: hidden;
  height: 360px;
}
.csh-featured-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.csh-featured:hover .csh-featured-img-wrap img {
  transform: scale(1.04);
}
.csh-featured-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--yellow);
  color: var(--navy);
  font-family: var(--fh);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 5px 12px;
  border-radius: var(--r-pill);
}
.csh-featured-body {
  padding: 40px 40px 40px 0;
}
.csh-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.csh-card-tag {
  font-family: var(--fb);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--purple);
}
.csh-card-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ink-light);
  opacity: 0.4;
}
.csh-card-read {
  font-family: var(--fb);
  font-size: 0.75rem;
  color: var(--ink-light);
}
.csh-featured-h {
  font-family: var(--fh);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.csh-featured-lead {
  font-family: var(--fb);
  font-size: 0.95rem;
  color: var(--ink-light);
  line-height: 1.7;
  margin-bottom: 28px;
}
.csh-featured-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 28px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.csh-stat-item {}
.csh-stat-num {
  font-family: var(--fh);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
  margin-bottom: 4px;
}
.csh-stat-lbl {
  font-family: var(--fb);
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}
.csh-read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--fb);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--navy);
  border-bottom: 2px solid var(--yellow);
  padding-bottom: 2px;
  transition: gap 0.2s;
}
.csh-read-link:hover {
  gap: 10px;
}
.csh-read-link svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── Standard 3-col grid ── */
.csh-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

/* ── Standard card ── */
.csh-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}
.csh-card:hover {
  border-color: var(--border-mid);
  box-shadow: 0 8px 32px rgba(27,45,74,0.1);
  transform: translateY(-3px);
}
.csh-card-img-wrap {
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.csh-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.csh-card:hover .csh-card-img-wrap img {
  transform: scale(1.06);
}
.csh-card-no-img {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--off) 0%, #e8eef6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.csh-card-no-img svg {
  width: 48px;
  height: 48px;
  stroke: var(--border-mid);
  fill: none;
}
.csh-card-body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.csh-card-title {
  font-family: var(--fh);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 10px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.csh-card-excerpt {
  font-family: var(--fb);
  font-size: 0.85rem;
  color: var(--ink-light);
  line-height: 1.65;
  margin-bottom: 20px;
}
.csh-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.csh-card-company {
  font-family: var(--fb);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
}
.csh-card-arrow {
  width: 32px;
  height: 32px;
  border-radius: var(--r-sm);
  background: var(--off);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  flex-shrink: 0;
}
.csh-card:hover .csh-card-arrow {
  background: var(--yellow);
}
.csh-card-arrow svg {
  width: 15px;
  height: 15px;
  stroke: var(--navy);
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── Inline card (text-only, no image) ── */
.csh-card-inline {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-xl);
  padding: 28px 28px 28px 24px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
  cursor: pointer;
}
.csh-card-inline:hover {
  border-color: var(--border-mid);
  box-shadow: 0 4px 20px rgba(27,45,74,0.08);
  transform: translateY(-2px);
}
.csh-card-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--purple-pale);
  display: flex;
  align-items: center;
  justify-content: center;
}
.csh-card-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--purple);
  fill: none;
  stroke-width: 1.8;
}
.csh-card-inline-body {
  flex: 1;
  min-width: 0;
}
.csh-card-inline-title {
  font-family: var(--fh);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 6px;
}
.csh-card-inline-sub {
  font-family: var(--fb);
  font-size: 0.82rem;
  color: var(--ink-light);
  line-height: 1.55;
}

/* ── 2-col grid variant ── */
.csh-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

/* ── Section label above grid ── */
.csh-section-label {
  font-family: var(--fh);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--purple);
  margin-bottom: 20px;
  display: block;
}

/* ── Empty state ── */
.csh-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 0;
  color: var(--ink-light);
  font-family: var(--fb);
  font-size: 1rem;
}

/* ── CTA Banner ── */
.csh-cta {
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 100%);
  padding: var(--sp-5xl) 0;
  position: relative;
  overflow: hidden;
}
.csh-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(250,200,53,0.15), transparent 50%),
    radial-gradient(circle at bottom left, rgba(56,162,255,0.08), transparent 40%);
  pointer-events: none;
}
.csh-cta-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.csh-cta-text {}
.csh-cta-brand {
  font-family: var(--fh);
  font-size: 1rem;
  font-weight: 800;
  color: var(--yellow);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.csh-cta-h {
  font-family: var(--fh);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 12px;
}
.csh-cta-sub {
  font-family: var(--fb);
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.65;
  max-width: 480px;
}
.csh-cta-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  flex-shrink: 0;
}
.csh-cta-note {
  font-family: var(--fb);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .csh-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .csh-hero {
    padding: 100px var(--gutter-sm) 40px;
  }
  .csh-filter-wrap {
    padding: 0 var(--gutter-sm) 32px;
  }
  .csh-catalog {
    padding: 0 var(--gutter-sm) 64px;
  }
  .csh-featured {
    grid-template-columns: 1fr;
  }
  .csh-featured-img-wrap {
    height: 240px;
  }
  .csh-featured-body {
    padding: 28px 28px 32px;
  }
  .csh-grid {
    grid-template-columns: 1fr;
  }
  .csh-grid-2 {
    grid-template-columns: 1fr;
  }
  .csh-featured-stats {
    gap: 20px;
  }
  .csh-cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .csh-cta-actions {
    width: 100%;
  }
}

@media (max-width: 600px) {
  .csh-filter {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }
  .csh-filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }
}