/* ---------- Project Index ---------- */
.projects-index {
  max-width: 1600px;
  margin-inline: auto;
}

.projects-header {
  max-width: 850px;
  margin-bottom: 3rem;
}

.projects-header h1 {
  margin: 1rem 0;
}

.projects-intro {
  max-width: 700px;
  font-size: 1.1rem;
  line-height: 1.7;
}

.project-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-bottom: 2rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--color-border);
}

.project-filter a {
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-green-dark);
  font: 0.8rem/1.5 var(--font-mono);
}

.project-filter a:hover,
.project-filter a[aria-current] {
  background: var(--color-green-dark);
  color: var(--color-text-light);
}

.projects-list {
  margin-bottom: 5rem;
}

.projects-list .section-header {
  margin-bottom: 2rem;
}

.projects-list .section-header h2 {
  margin: 0.75rem 0;
}

.empty-state {
  padding: 3rem 0;
}