.portfolio {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

section h3 {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-heading);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.4rem;
  margin-bottom: 0.25rem;
}

.projectList {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.projectCard {
  background-color: var(--color-background-soft);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.projectHeader {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0.35rem 0.75rem;
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  text-align: left;
}

.projectHeader:hover {
  background-color: var(--color-background-mute);
}

.projectHeader h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-heading);
  margin: 0;
  grid-column: 1;
  grid-row: 1;
}

.chevron {
  font-size: 1.1rem;
  color: var(--color-text);
  transition: transform 0.25s ease;
  line-height: 1;
  grid-column: 2;
  grid-row: 1;
  align-self: center;
}

.chevron.open {
  transform: rotate(180deg);
}

.tagList {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  grid-column: 1 / -1;
  grid-row: 2;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  color: #ffffff;
  letter-spacing: 0.01em;
}

.expandWrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}

.expandWrapper.expanded {
  grid-template-rows: 1fr;
}

.expandContent {
  overflow: hidden;
  padding: 0 1.25rem;
  transition: padding 0.28s ease;
}

.expandWrapper.expanded .expandContent {
  padding: 0 1.25rem 0.9rem;
}

.expandContent p {
  color: var(--color-text);
  line-height: 1.6;
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
}

.projectLinks {
  display: flex;
  gap: 0.75rem;
}

.projectLinks a {
  font-size: 0.85rem;
}