/* === Case Studies Page === */
.page-casestudies { overflow: auto; }
.page-casestudies .scroll-container { height: auto; overflow: visible; }

.cs-main {
  padding-top: 64px;
}

/* Hero */
.cs-hero {
  padding: 100px 24px 60px;
  text-align: center;
  background: #fafafa;
}
.cs-hero-inner {
  max-width: 700px;
  margin: 0 auto;
}
.cs-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #999;
  margin-bottom: 16px;
}
.cs-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #1a1a1a;
  margin-bottom: 16px;
}
.cs-hero-sub {
  font-size: 1.15rem;
  color: #666;
}

/* Stats bar */
.cs-stats {
  background: #1a1a1a;
  padding: 48px 24px;
}
.cs-stats-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.cs-stat-number {
  display: block;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}
.cs-stat-label {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Case study sections */
.cs-case {
  padding: 80px 24px;
  border-bottom: 1px solid #eee;
}
.cs-case:nth-child(even) {
  background: #fafafa;
}
.cs-case-inner {
  max-width: 780px;
  margin: 0 auto;
}
.cs-case-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.cs-case-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  color: #fff;
}
.cs-tag-ads { background: #2563eb; }
.cs-tag-marketing { background: #7c3aed; }
.cs-tag-ai { background: #f59e0b; color: #1a1a1a; }
.cs-case-industry {
  font-size: 0.8rem;
  color: #999;
  font-weight: 500;
}
.cs-case h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: #1a1a1a;
  margin-bottom: 12px;
}
.cs-case-summary {
  font-size: 1.05rem;
  color: #555;
  line-height: 1.6;
  margin-bottom: 36px;
}

/* Metrics */
.cs-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.cs-metric {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
}
.cs-metric-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: -0.02em;
}
.cs-metric-label {
  display: block;
  font-size: 0.75rem;
  color: #999;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Details */
.cs-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.cs-detail-block h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 8px;
}
.cs-detail-block p,
.cs-detail-block li {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.6;
}
.cs-detail-block ul {
  list-style: none;
  padding: 0;
}
.cs-detail-block li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 6px;
}
.cs-detail-block li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #999;
}

/* Results table */
.cs-results-table {
  border: 1px solid #eee;
  border-radius: 12px;
  overflow: hidden;
  margin-top: 16px;
}
.cs-results-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  padding: 14px 20px;
  font-size: 0.95rem;
  color: #555;
  border-bottom: 1px solid #eee;
}
.cs-results-row:last-child { border-bottom: none; }
.cs-results-header {
  background: #f7f7f7;
  font-weight: 600;
  color: #1a1a1a;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.cs-results-total {
  background: #1a1a1a;
  color: #fff;
  font-weight: 700;
}

/* 4-col metrics */
.cs-metrics-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .cs-results-row {
    grid-template-columns: repeat(5, 1fr);
    font-size: 0.8rem;
    padding: 10px 12px;
  }
}

/* CTA */
.cs-cta {
  padding: 80px 24px;
  text-align: center;
  background: #f0f4ff;
}
.cs-cta-inner {
  max-width: 600px;
  margin: 0 auto;
}
.cs-cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #1a1a1a;
  margin-bottom: 12px;
}
.cs-cta p {
  font-size: 1.05rem;
  color: #555;
  margin-bottom: 32px;
}
.cs-cta-btn {
  display: inline-block;
  padding: 14px 40px;
  background: #1a1a1a;
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.2s;
}
.cs-cta-btn:hover { opacity: 0.85; }

/* Responsive */
@media (max-width: 768px) {
  .cs-stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .cs-metrics {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .cs-case { padding: 60px 20px; }
  .cs-hero { padding: 80px 20px 48px; }
}

@media (max-width: 480px) {
  .cs-stats-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}