/* Research page styling */

:root {
  --research-text-color: var(--global-text-color);
  --research-muted-color: rgba(0, 0, 0, 0.62);
  --research-subtle-color: rgba(0, 0, 0, 0.75);
  --research-accent-color: var(--global-link-color);
  --research-accent-soft: rgba(82, 173, 200, 0.15);
  --research-surface-color: rgba(0, 0, 0, 0.03);
  --research-surface-strong: rgba(0, 0, 0, 0.045);
  --research-border-color: rgba(0, 0, 0, 0.08);
  --research-chip-border: rgba(0, 0, 0, 0.16);
  --research-pill-border: rgba(0, 0, 0, 0.2);
  --research-hero-start: rgba(0, 0, 0, 0.04);
  --research-hero-end: rgba(0, 0, 0, 0.015);
}

html[data-theme="dark"] {
  --research-text-color: var(--global-text-color);
  --research-muted-color: rgba(255, 255, 255, 0.65);
  --research-subtle-color: rgba(255, 255, 255, 0.82);
  --research-accent-color: var(--global-link-color);
  --research-accent-soft: rgba(138, 200, 255, 0.15);
  --research-surface-color: rgba(255, 255, 255, 0.02);
  --research-surface-strong: rgba(255, 255, 255, 0.03);
  --research-border-color: rgba(255, 255, 255, 0.08);
  --research-chip-border: rgba(255, 255, 255, 0.15);
  --research-pill-border: rgba(255, 255, 255, 0.2);
  --research-hero-start: rgba(33, 33, 33, 0.85);
  --research-hero-end: rgba(80, 80, 80, 0.15);
}

.research-page {
  color: var(--research-text-color);
}

.research-page a {
  color: var(--research-accent-color);
}

.research-hero {
  margin-bottom: 1.75rem;
  padding: 1.5rem;
  border: 1px solid var(--research-border-color);
  border-radius: 18px;
  background: linear-gradient(135deg, var(--research-hero-start), var(--research-hero-end));
  line-height: 1.6;
}

.hero-highlights {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.highlight-card {
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--research-border-color);
  background: var(--research-surface-color);
}

.highlight-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--research-muted-color);
}

.highlight-value {
  font-size: 1.8rem;
  font-weight: 600;
}

.research-areas {
  margin-top: 1.75rem;
}

.areas-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.area-tip {
  color: var(--research-muted-color);
  font-size: 0.95rem;
}

.areas-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.area-card {
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--research-border-color);
  background: var(--research-surface-color);
  line-height: 1.4;
}

.area-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.area-chips {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.area-chip {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--research-chip-border);
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.area-chip:hover,
.area-chip.active {
  border-color: var(--research-accent-color);
  background: var(--research-accent-soft);
}

.research-projects {
  margin-top: 2rem;
}

.project-group + .project-group {
  margin-top: 1.5rem;
}

.group-title {
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--research-muted-color);
  border-bottom: 1px solid var(--research-border-color);
  padding-bottom: 0.4rem;
}

.project-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.9rem;
}

.project-card {
  border: 1px solid var(--research-border-color);
  border-radius: 12px;
  padding: 1rem;
  background: var(--research-surface-strong);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.project-card.hidden {
  display: none;
}

.project-meta {
  font-size: 0.85rem;
  color: var(--research-muted-color);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.project-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.project-summary {
  font-size: 0.9rem;
  color: var(--research-subtle-color);
}

.project-points {
  padding-left: 1rem;
  margin: 0.2rem 0 0;
  color: var(--research-subtle-color);
}

.project-points li + li {
  margin-top: 0.25rem;
}

.project-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-pill {
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--research-pill-border);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-links {
  margin-top: auto;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.project-links a {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

@media (max-width: 640px) {
  .areas-header {
    flex-direction: column;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }
}