/* Research-area cards on the front page (_pages/about.md, data in _data/research_areas.yml).
   Colours use the theme's --global-* variables so light/dark mode both work. */

/* Home page: capitalize the theme's lowercase section headings ("news", "selected publications") */
h2::first-letter {
  text-transform: uppercase;
}

.research-areas {
  clear: both; /* start below the floated profile picture */
  padding-top: 1rem;
}

.research-areas .ra-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}

.research-areas .ra-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--global-divider-color);
  border-radius: 0.6rem;
  background-color: var(--global-card-bg-color);
  color: var(--global-text-color);
  text-decoration: none;
  transition:
    border-color 0.15s ease,
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.research-areas .ra-card:hover {
  border-color: var(--global-theme-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  text-decoration: none;
}

/* Vignette: same frame for every card; figures are fitted inside on white (they have white backgrounds) */
.research-areas .ra-media {
  aspect-ratio: 2.8 / 1;
  margin: -0.3rem -0.4rem 0.2rem;
  border-radius: 0.4rem;
  overflow: hidden;
  background-color: #fff;
}

.research-areas .ra-media img,
.research-areas .ra-media video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.research-areas .ra-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.research-areas .ra-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
  color: var(--global-theme-color);
  background-color: color-mix(in srgb, var(--global-theme-color) 12%, transparent);
}

.research-areas .ra-title {
  flex: 1;
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.research-areas .ra-chevron {
  color: var(--global-text-color-light);
  font-size: 0.8rem;
}

.research-areas .ra-card:hover .ra-chevron {
  color: var(--global-theme-color);
}

.research-areas .ra-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--global-text-color-light);
}

.research-areas .ra-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
}

.research-areas .ra-tag {
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  border: 1px solid var(--global-divider-color);
  color: var(--global-text-color-light);
}