/* ─── CASE STUDY SHARED STYLES ─── */

.cs-main { padding-top: 72px; }

/* HERO */
.cs-hero {
  background: var(--navy);
  padding: 64px 0 72px;
  position: relative;
  overflow: hidden;
}
.cs-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 80% at 90% 50%, rgba(200,169,81,0.1) 0%, transparent 70%);
}
.cs-hero .container { position: relative; }

.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  margin-bottom: 24px;
  transition: color 0.3s ease;
  letter-spacing: 0.02em;
}
.cs-back:hover { color: var(--gold); }

.cs-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--gold);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.cs-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 700px;
}

.cs-subtitle {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
  max-width: 640px;
  margin-bottom: 48px;
}

.cs-metrics {
  display: flex;
  gap: 0;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 680px;
}
.cs-metric {
  flex: 1;
  padding: 24px 20px;
  border-right: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}
.cs-metric:last-child { border-right: none; }
.cs-metric strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 6px;
}
.cs-metric span {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* SECTIONS */
.cs-section { padding: 72px 0; }
.cs-section--dark { background: var(--navy); }

.cs-heading {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 20px;
}
.cs-heading--light { color: var(--white); }

.cs-section p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 768px) { .cs-two-col { grid-template-columns: 1fr; gap: 40px; } }

.cs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cs-list li {
  font-size: 0.92rem;
  color: var(--muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
}
.cs-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}

/* PROOF GRID */
.cs-results-sub {
  color: rgba(255,255,255,0.4) !important;
  font-size: 0.85rem !important;
  margin-bottom: 36px !important;
  letter-spacing: 0.04em;
}

.cs-proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cs-proof-grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .cs-proof-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-proof-grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .cs-proof-grid,
  .cs-proof-grid--4 { grid-template-columns: 1fr; }
}

.cs-proof-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  overflow: hidden;
}
.cs-proof-card img {
  width: 100%;
  height: 260px;
  display: block;
  object-fit: cover;
  object-position: top;
}
.cs-proof-card p {
  font-size: 0.78rem !important;
  color: rgba(255,255,255,0.4) !important;
  padding: 12px 14px;
  margin: 0 !important;
  line-height: 1.5 !important;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* OUTCOMES */
.cs-outcome-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 8px;
}
@media (max-width: 900px) { .cs-outcome-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .cs-outcome-grid { grid-template-columns: 1fr; } }

.cs-outcome {
  border-left: 3px solid var(--gold);
  padding-left: 20px;
}
.cs-outcome strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 10px;
}
.cs-outcome p {
  font-size: 0.85rem !important;
  color: var(--muted);
  line-height: 1.6 !important;
  margin: 0 !important;
}

/* CTA */
.cs-cta {
  background: var(--off-white);
  padding: 80px 0;
  text-align: center;
  border-top: 1px solid var(--border);
}
.cs-cta h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}
.cs-cta p {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 32px;
}

/* METRICS RESPONSIVE */
@media (max-width: 600px) {
  .cs-metrics { flex-wrap: wrap; }
  .cs-metric { flex: 1 1 45%; border-bottom: 1px solid rgba(255,255,255,0.1); }
}