#portfolio {
  border-top: 1px solid var(--accent-subtle);
}

.portfolio-header {
  max-width: 780px;
  margin-bottom: var(--space-5);
}

@media (min-width: 768px) {
  .portfolio-header {
    margin-bottom: var(--space-7);
  }
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: stretch;
}

@media (min-width: 540px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }
}

.portfolio-item {
  position: relative;
  padding: var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  row-gap: var(--space-2);
  transition: border-color var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}

@media (min-width: 768px) {
  .portfolio-item {
    padding: var(--space-5);
  }
}

.portfolio-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent);
  transition: height var(--transition-base);
}

.portfolio-item:hover {
  border-color: var(--accent-muted);
  transform: translateY(-2px);
}

.portfolio-item:hover::before {
  height: 100%;
}

.portfolio-sector {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 12px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid var(--accent-muted);
  border-radius: 2px;
}

.portfolio-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(1.25em * 2);
  margin: 0;
}

.portfolio-meta {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--accent);
  opacity: 0.85;
  letter-spacing: 0.01em;
  margin: 0;
}

.portfolio-copy {
  font-size: 0.9375rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin: 0;
  align-self: start;
}