/* Extensions: services → categories → portfolio → case study */
:root {
  --ext-card-bg: rgba(255,255,255,0.98);
}

.ext-hero {
  padding: 150px 0 70px;
  background: var(--gradient-primary);
}
.ext-hero__title { color: var(--white); font-weight: 900; margin-bottom: 10px; }
.ext-hero__subtitle { color: rgba(255,255,255,0.86); max-width: 820px; font-size: 1.1rem; line-height: 1.6; }
.ext-hero__crumbs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.ext-hero__pill {
  display: inline-flex; gap: 10px; align-items: center;
  padding: 8px 14px; border-radius: 999px;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.92);
  font-weight: 700; font-size: 13px;
}

.ext-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 1024px) { .ext-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .ext-grid { grid-template-columns: 1fr; } }

.ext-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}
.ext-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), 0 20px 40px -20px rgba(26, 147, 111, 0.25);
  border-color: rgba(26, 147, 111, 0.3);
}
.ext-card__head {
  padding: 22px 22px 14px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.ext-card__icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-tertiary);
  color: var(--primary);
  border-radius: var(--radius-md);
  flex: 0 0 52px;
  transition: var(--transition);
}
.ext-card:hover .ext-card__icon { background: var(--gradient-primary); color: var(--white); }
.ext-card__title { font-size: 1.2rem; margin-bottom: 6px; }
.ext-card__desc { color: var(--text-secondary); font-size: 14px; line-height: 1.6; margin-bottom: 0; }
.ext-card__body { padding: 0 22px 22px; }
.ext-card__meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 16px; }
.ext-chip {
  padding: 4px 10px;
  background: var(--bg-tertiary);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ext-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 800;
  font-size: 13px;
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
}
.ext-card__cta:hover { background: var(--primary); color: var(--white); }
.ext-card__link { color: inherit; text-decoration: none; display: block; }

/* Case study */
.cs-preview {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--white);
}
.cs-preview img { width: 100%; height: auto; display: block; }
.cs-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 1024px) { .cs-grid { grid-template-columns: 1fr; } }
.cs-panel {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 22px;
}
.cs-section-title { font-size: 1.1rem; margin-bottom: 10px; }
.cs-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.cs-tags span { padding: 8px 14px; background: var(--bg-tertiary); color: var(--primary); font-weight: 800; border-radius: 999px; font-size: 13px; }
.cs-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.cs-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--text-secondary); }
.cs-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); margin-top: 8px; flex: 0 0 8px; }