/* ====================================================================
   Case study page styles — extends styles.css
   ==================================================================== */

/* HERO of a case study */
.cs-hero {
  padding: 160px 0 60px;
  position: relative;
}
.cs-hero .container { max-width: 920px; }

.cs-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 14, 24, 0.5);
  transition: all 220ms var(--ease);
  margin-bottom: 36px;
}
.cs-back:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.04);
}

.cs-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.cs-eyebrow::before {
  content: ''; width: 24px; height: 1px; background: var(--accent);
}

.cs-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 400;
  font-size: clamp(36px, 5.2vw, 64px);
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 0 0 24px;
  text-wrap: balance;
  padding-top: 0.05em;
}
.cs-lead {
  font-family: 'Manrope', sans-serif;
  font-size: clamp(17px, 1.5vw, 20px);
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 0 50px;
  text-wrap: pretty;
  line-height: 1.55;
}

.cs-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 60px;
}
.cs-meta-item {
  padding: 0 22px;
  border-left: 1px solid var(--line);
}
.cs-meta-item:first-child { border-left: none; padding-left: 0; }
.cs-meta-item .ml {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-mute);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.cs-meta-item .mv {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  color: var(--text);
  letter-spacing: -0.005em;
  line-height: 1.3;
}

/* Stats banner */
.cs-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0 0 80px;
}
.cs-stat {
  padding: 28px 24px;
  background: linear-gradient(180deg, rgba(20,26,42,0.5), rgba(12,16,28,0.5));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  position: relative; overflow: hidden;
}
.cs-stat::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(300px 150px at 50% 100%, var(--accent-soft), transparent 70%);
  opacity: 0;
  transition: opacity 350ms var(--ease);
}
.cs-stat:hover::before { opacity: 1; }
.cs-stat .n {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: block;
  margin-bottom: 4px;
}
.cs-stat .l {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Body */
.cs-body { padding: 0 0 80px; }
.cs-body .container { max-width: 760px; }

.cs-section { margin-bottom: 72px; }
.cs-section-kicker {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 14px;
  padding: 5px 12px;
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
}
.cs-section h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 32px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 22px;
  text-wrap: balance;
}
.cs-section p {
  font-family: 'Manrope', sans-serif;
  font-size: 17px;
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0 0 16px;
  text-wrap: pretty;
}

/* Pull quote */
.cs-quote {
  position: relative;
  padding: 44px 36px;
  margin: 60px 0 80px;
  background: linear-gradient(180deg, rgba(20,26,42,0.5), rgba(12,16,28,0.5));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cs-quote::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(500px 200px at 0% 0%, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.cs-quote-mark {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 64px;
  line-height: 0.6;
  color: var(--accent);
  position: absolute;
  top: 18px; left: 22px;
  opacity: 0.4;
}
.cs-quote-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.4;
  color: var(--text);
  margin: 0 0 18px;
  position: relative; z-index: 1;
  padding-left: 26px;
}
.cs-quote-author {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
  padding-left: 26px;
  position: relative; z-index: 1;
}

/* Related */
.cs-related { padding: 60px 0 100px; border-top: 1px solid var(--line); }
.cs-related h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
}
.cs-related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

/* CTA */
.cs-cta { padding: 40px 0 100px; }

@media (max-width: 820px) {
  .cs-meta { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .cs-meta-item { border-left: none; padding-left: 0; }
  .cs-stats-row { grid-template-columns: repeat(2, 1fr); }
  .cs-related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .cs-stats-row { grid-template-columns: 1fr; }
  .cs-quote { padding: 36px 24px; }
  .cs-quote-text, .cs-quote-author { padding-left: 0; }
}

/* heading-order fix: section titles are h2 */
.cs-section h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 32px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 22px;
  text-wrap: balance;
}