/* ---------- Case study page ---------- */

.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-grey-45);
  padding-top: 120px;
}
.cs-back:hover { color: var(--color-black); }
.cs-back .icon { transform: rotate(180deg); transition: transform 0.2s ease; }
.cs-back:hover .icon { transform: rotate(180deg) translateX(3px); }

.cs-hero {
  padding-top: 24px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--color-grey-88);
}
.cs-label {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: block;
}
.cs-hero h1 {
  font-weight: 700;
  font-size: clamp(2rem, 2.4vw + 1.2rem, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-black);
  padding-top: 16px;
  max-width: 780px;
}
.cs-hero-sub {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-grey-45);
  max-width: 620px;
  padding-top: 20px;
}

.cs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-top: 40px;
}
.cs-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cs-meta-item span:first-child {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-grey-45);
}
.cs-meta-item span:last-child {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-black);
}

.cs-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--color-grey-88);
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 64px;
}
.cs-section:last-of-type { border-bottom: none; }
.cs-section-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-grey-45);
}
.cs-section-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.cs-section-body h2 {
  font-weight: 700;
  font-size: 1.625rem;
  letter-spacing: -0.02em;
  color: var(--color-black);
}
.cs-section-body p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-grey-45);
  max-width: 640px;
}
.cs-section-body ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 640px;
}
.cs-section-body li {
  position: relative;
  padding-left: 20px;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-grey-45);
}
.cs-section-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--color-grey-45);
}
.cs-section-body li strong { color: var(--color-black); font-weight: 600; }

.cs-image {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-grey-88);
  box-shadow: 0 20px 40px -24px rgba(0, 0, 0, 0.25);
}
.cs-image-caption {
  display: block;
  margin-top: -8px;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-grey-45);
  max-width: 640px;
}

/* Metrics — the recruiter-facing highlight */
.cs-metrics-section {
  background: var(--color-black);
  border-radius: var(--radius-lg);
  padding: 56px;
  margin: 64px 0;
}
.cs-metrics-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 40px;
  max-width: 560px;
}
.cs-metrics-head .cs-section-label { color: var(--color-grey-62); }
.cs-metrics-head h2 {
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  color: var(--color-grey-96);
}
.cs-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
}
.cs-metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--white-13);
}
.cs-metric-value {
  font-weight: 700;
  font-size: clamp(1.75rem, 1.6vw + 1.2rem, 2.5rem);
  letter-spacing: -0.03em;
  color: var(--color-white);
}
.cs-metric-label {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-grey-62);
}

.cs-reflection {
  background: var(--color-grey-95);
  border-radius: var(--radius-md);
  padding: 40px;
}

.cs-footer-nav {
  padding: 64px 0 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.cs-footer-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

@media (max-width: 860px) {
  .cs-section { grid-template-columns: 1fr; gap: 16px; }
  .cs-metrics-section { padding: 40px 28px; border-radius: 24px; }
}

@media (max-width: 640px) {
  .cs-back { padding-top: 88px; }
  .cs-hero { padding-bottom: 40px; }
  .cs-meta { gap: 24px; }
  .cs-section { padding: 48px 0; }
  .cs-metrics-section { margin: 48px 0; padding: 32px 20px; }
  .cs-metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}