/* =============================================
   BOURN MEDIA — Case Studies Page Styles
   ============================================= */

/* ── CASE ARTICLES ──────────────────────────── */
.csp-case {
  padding: 80px 48px;
  border-bottom: 1px solid var(--border);
}

.csp-case-head {
  max-width: 960px;
  margin: 0 auto 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.csp-case-studio {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.csp-case-genre {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.csp-case-title {
  max-width: 960px;
  margin: 0 auto 32px;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 4.5vw, 4.2rem);
  letter-spacing: 0.02em;
  color: var(--text);
  line-height: 0.95;
}

.csp-case-body {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.csp-ca {
  background: var(--surface);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.csp-ca--results {
  background: var(--bg);
  grid-column: 1 / -1;
}

.csp-ca-tag {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 500;
}

.csp-ca p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.csp-metrics {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 8px 0 20px;
}

.csp-metrics li {
  background: var(--surface);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.csp-metric-num {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 2.5vw, 2.4rem);
  letter-spacing: 0.04em;
  color: var(--amber);
  line-height: 1;
}

.csp-metric-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.csp-quote {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  font-style: italic;
  border-left: 2px solid var(--amber);
  padding-left: 16px;
  max-width: 640px;
}

/* ── CTA BODY VARIATION ─────────────────────── */
.csp-cta-body {
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 520px;
  text-align: center;
  line-height: 1.7;
}

.op-cta .csp-cta-btn {
  align-self: center;
}

/* ── RESPONSIVE ────────────────────────────── */
@media (max-width: 768px) {
  .csp-case {
    padding: 60px 24px;
  }

  .csp-case-body {
    grid-template-columns: 1fr;
  }

  .csp-ca, .csp-ca--results {
    padding: 28px 24px;
  }

  .csp-metrics {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .csp-metrics {
    grid-template-columns: 1fr;
  }
}