/* Site nav — shared across inner pages */
.site-nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-nav-brand {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-nav-links { display: flex; gap: 28px; }
.site-nav-link {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.15s;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.site-nav-link:hover { color: var(--fg); }
.site-nav-link.active { color: var(--fg); border-bottom-color: var(--accent); }

/* Case Studies pages — matches theme.css tokens */

.cs-page,
.csd-page {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
}

/* INDEX PAGE */
.cs-header {
  padding: 72px 48px 60px;
  border-bottom: 1px solid var(--border);
}
.cs-header-inner { max-width: 1200px; margin: 0 auto; }
.cs-eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.cs-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.cs-subtitle {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 520px;
}

.cs-grid-section { padding: 64px 48px; }
.cs-grid-inner { max-width: 1200px; margin: 0 auto; }
.cs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.cs-card {
  display: block;
  text-decoration: none;
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  background: #fff;
}
.cs-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(201, 123, 58, 0.12);
  transform: translateY(-2px);
}
.cs-card-inner { padding: 28px 28px 24px; }
.cs-card-industry {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.cs-card-client {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.cs-card-tagline {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.5;
  margin-bottom: 20px;
}
.cs-card-metric {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg);
  background: var(--accent-light);
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 16px;
}
.cs-card-arrow {
  font-size: 1.1rem;
  color: var(--fg-subtle);
  transition: color 0.15s, transform 0.15s;
}
.cs-card:hover .cs-card-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

.cs-loading, .cs-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 0;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* CTA band */
.cs-cta-band, .csd-cta-band {
  background: var(--fg);
  padding: 64px 48px;
  text-align: center;
}
.cs-cta-inner, .csd-cta-inner { max-width: 640px; margin: 0 auto; }
.cs-cta-heading, .csd-cta-heading {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.cs-cta-body, .csd-cta-body {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 28px;
}
.cs-cta-btn, .csd-cta-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: background 0.15s;
}
.cs-cta-btn:hover, .csd-cta-btn:hover { background: #b06a2e; }

/* DETAIL PAGE */
.csd-hero {
  background: var(--fg);
  padding: 80px 48px 72px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.csd-hero-inner { max-width: 800px; margin: 0 auto; }
.csd-hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.csd-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 16px;
}
.csd-hero-tagline {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  max-width: 560px;
}
.csd-loading { color: rgba(255,255,255,0.5); }

.csd-body { padding: 0 48px; }
.csd-body-inner { max-width: 800px; margin: 0 auto; padding: 64px 0; }

.csd-section { padding: 40px 0; border-bottom: 1px solid var(--border); }
.csd-section:last-child { border-bottom: none; }
.csd-section-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.csd-section-body p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--fg);
  white-space: pre-wrap;
}

.csd-metrics {
  background: var(--bg-alt);
  padding: 48px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.csd-metrics-inner {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 32px;
}
.csd-metric { text-align: center; }
.csd-metric-val {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.csd-metric-key {
  font-size: 0.85rem;
  color: var(--fg-muted);
  text-transform: capitalize;
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 640px) {
  .cs-header, .cs-grid-section, .cs-cta-band { padding-left: 20px; padding-right: 20px; }
  .csd-hero, .csd-body, .csd-metrics, .csd-cta-band { padding-left: 20px; padding-right: 20px; }
  .cs-grid { grid-template-columns: 1fr; }
}