/* ============================================================
   papers.css — paper cards and abstract toggles
   ============================================================ */

.paper-card {
  border-left: 3px solid var(--accent);
  padding: 0.9rem 0 0.9rem 1.1rem;
  margin-bottom: 1.4rem;
}

.paper-card:last-child {
  margin-bottom: 0;
}

.paper-meta {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 0.3rem;
}

.paper-venue {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  min-width: 2.5rem;
}

.paper-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.2rem;
  line-height: 1.4;
}

.paper-authors {
  font-size: 0.88rem;
  color: var(--gray);
  font-weight: 300;
  margin-bottom: 0.55rem;
}

/* Abstract toggle */
details {
  margin-bottom: 0.55rem;
}

details summary {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  user-select: none;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::before {
  content: '▸';
  color: var(--accent);
  font-size: 0.7rem;
  transition: transform 0.15s ease;
  display: inline-block;
}

details[open] summary::before {
  transform: rotate(90deg);
}

details p,
details ul,
details dl {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text);
  line-height: 1.65;
  padding-left: 0.1rem;
}

/* Links */
.paper-links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.paper-links a {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.paper-links a:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

/* Active nav link */
nav ul li a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}