/* ── CASE STUDY PAGE ── */
:root {
  --cs-gold: #00BCD4;
  --cs-gold-lt: #4dd9ec;
  --cs-bg: #050b16;
  --cs-bg2: #080e1a;
  --cs-border: rgba(0,188,212,0.12);
  --cs-beige: #c8dcf5;
  --cs-muted: rgba(200,220,245,0.55);
}

.ef-cs-page {
  background: var(--cs-bg);
  min-height: 100vh;
}

/* BACK */
.ef-cs-back {
  padding: 1.5rem 2rem 0;
  max-width: 1100px;
  margin: 0 auto;
}
.ef-cs-back__link {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(196,154,64,0.5);
  text-decoration: none;
  transition: color 0.3s ease;
}
.ef-cs-back__link:hover { color: var(--cs-gold); }

/* HERO */
.ef-cs-hero {
  padding: 4rem 2rem 3rem;
  border-bottom: 1px solid var(--cs-border);
}
.ef-cs-hero__inner {
  max-width: 800px;
  margin: 0 auto;
}
.ef-cs-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--cs-gold);
  margin-bottom: 1.25rem;
}
.ef-cs-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 300;
  color: var(--cs-beige);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.ef-cs-title em {
  font-style: italic;
  color: var(--cs-gold);
}
.ef-cs-subtitle {
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  color: var(--cs-muted);
  line-height: 1.6;
  margin-bottom: 1.75rem;
  max-width: 600px;
}
.ef-cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 2rem;
}
.ef-cs-tags span {
  font-family: 'DM Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #00BCD4;
  border: 1px solid rgba(0,188,212,0.25);
  padding: 3px 10px;
  border-radius: 2px;
}
.ef-cs-hero__links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* BUTTONS */
.ef-cs-btn {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.75rem 1.75rem;
  border-radius: 2px;
  transition: all 0.3s ease;
  display: inline-block;
}
.ef-cs-btn--primary {
  background: rgba(0,188,212,0.1);
  color: #00BCD4;
  border: 1px solid rgba(0,188,212,0.4);
  font-weight: 600;
}
.ef-cs-btn--primary:hover {
  background: #00BCD4;
  color: #050b16;
  border-color: #00BCD4;
  transform: translateY(-2px);
}
.ef-cs-btn--ghost {
  border: 1px solid rgba(0,188,212,0.25);
  color: rgba(0,188,212,0.7);
  background: transparent;
}
.ef-cs-btn--ghost:hover {
  border-color: #00BCD4;
  color: #00BCD4;
  background: rgba(0,188,212,0.08);
  transform: translateY(-2px);
}

/* METRICS BAR */
.ef-cs-metrics {
  background: #060c18;
  border-bottom: 1px solid var(--cs-border);
}
.ef-cs-metrics__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}
.ef-cs-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}
.ef-cs-metric__value {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 400;
  color: var(--cs-gold);
  line-height: 1;
}
.ef-cs-metric__label {
  font-family: 'DM Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cs-muted);
}

/* CONTENT BLOCKS */
.ef-cs-content {
  padding: 5rem 2rem;
}
.ef-cs-content__inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4rem;
}
.ef-cs-block {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--cs-border);
}
.ef-cs-block:last-child { border-bottom: none; }
.ef-cs-block__number {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--cs-gold);
  padding-top: 0.35rem;
}
.ef-cs-block__title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--cs-beige);
  margin-bottom: 1.25rem;
}
.ef-cs-block__text {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--cs-muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.ef-cs-block__text strong { color: var(--cs-beige); }
.ef-cs-list {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--cs-muted);
  line-height: 1.75;
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.ef-cs-list li::before {
  content: '→ ';
  color: var(--cs-gold);
}
.ef-cs-list strong { color: var(--cs-beige); }
.ef-cs-insight {
  border-left: 2px solid #00BCD4;
  padding: 1rem 1.5rem;
  background: rgba(0,188,212,0.05);
  border-radius: 0 3px 3px 0;
  margin-top: 1.5rem;
}
.ef-cs-insight__text {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--cs-muted);
  line-height: 1.65;
  margin: 0;
  font-style: italic;
}
.ef-cs-insight__text strong { color: var(--cs-gold); }

/* RESULTS GRID */
.ef-cs-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}
.ef-cs-result {
  background: rgba(0,188,212,0.05);
  border: 1px solid rgba(0,188,212,0.12);
  border-radius: 3px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: border-color 0.3s ease;
}
.ef-cs-result:hover { border-color: rgba(0,188,212,0.5); }
.ef-cs-result__metric {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.2rem;
  color: var(--cs-gold);
}
.ef-cs-result__desc {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  color: var(--cs-muted);
}

/* CTA */
.ef-cs-cta {
  padding: 6rem 2rem;
  background: #060c18;
  border-top: 1px solid var(--cs-border);
  text-align: center;
}
.ef-cs-cta__inner { max-width: 600px; margin: 0 auto; }
.ef-cs-cta__eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(196,154,64,0.5);
  margin-bottom: 1rem;
}
.ef-cs-cta__title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 300;
  color: var(--cs-beige);
  margin-bottom: 2rem;
  line-height: 1.2;
}
.ef-cs-cta__title em {
  font-style: italic;
  color: var(--cs-gold);
}

@media (max-width: 768px) {
  .ef-cs-block { grid-template-columns: 1fr; gap: 0.5rem; }
  .ef-cs-results-grid { grid-template-columns: 1fr; }
  .ef-cs-metrics__inner { justify-content: center; }
}