/* Work hub — case-hero (shared with chapter hubs) + project grid */

.work-systems-link {
  display: inline-flex;
  margin-top: 20px;
  font: 600 14px/1 var(--font-display);
  color: var(--accent);
}
.work-systems-link:hover { text-decoration: underline; }

.work-section { padding: 48px 20px 64px; }
.work-inner { max-width: var(--container-max); margin: 0 auto; }

.project-group { margin-bottom: 48px; }
.project-group:last-child { margin-bottom: 0; }
.project-group-title {
  font: 600 13px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--meta);
  margin-bottom: 20px;
}
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.project-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s var(--ease);
}
.project-card:hover {
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border));
  box-shadow: var(--elev-raised);
  transform: translateY(-3px);
}
.project-thumb {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--border-soft), var(--surface));
  position: relative;
  overflow: hidden;
}
.project-thumb--health { background: linear-gradient(135deg, #e8edf5, #d8e2f0); }
.project-thumb--edu { background: linear-gradient(135deg, #e8f0e8, #d4e8d4); }
.project-thumb--geo { background: linear-gradient(135deg, #e8e4f5, #d4cce8); }
.project-thumb--ai { background: linear-gradient(135deg, #eceef4, #dde2ec); }
.project-body { padding: 22px 24px 26px; }
.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.tag {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 4px;
  background: var(--fill-subtle);
  color: var(--muted);
}
.project-body h3 {
  font: 600 clamp(20px, 2.5vw, 26px)/1.2 var(--font-display);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.project-body p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.55;
  max-width: 48ch;
}

@media (min-width: 600px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}
@media (min-width: 768px) {
  .work-section { padding: 64px 32px 80px; }
  .project-grid { gap: 40px; }
  .project-thumb { aspect-ratio: 3 / 2; }
}