:root {
  --sidebar-bg: #f8f9fa;
  --border-soft: rgba(0, 0, 0, 0.08);
  --text-muted-custom: #5c636a;
}

body {
  font-family: "Lato", system-ui, -apple-system, sans-serif;
  color: #212529;
}

/* Offset in-page anchors below fixed navbar */
section[id] {
  scroll-margin-top: 4.5rem;
}

.site-navbar {
  border-bottom: 1px solid var(--border-soft);
}

.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-soft);
}

@media (min-width: 992px) {
  .sidebar-sticky {
    position: sticky;
    top: 4.5rem;
    max-height: calc(100vh - 5rem);
    overflow-y: auto;
  }
}

/* Vertical oval crop (ellipse): unequal width/height + 50% radius — not a circle or square crop */
.portrait {
  width: 168px;
  height: 210px;
  max-width: 100%;
  object-fit: cover;
  /* Slightly left of center reframes the crop (tweak 40–50% if needed) */
  object-position: 40% center;
  border-radius: 50%;
}

.sidebar-name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-title {
  font-size: 0.95rem;
  color: var(--text-muted-custom);
  font-weight: 400;
}

.sidebar-links a {
  color: #212529;
  text-decoration: none;
}

.sidebar-links a:hover {
  text-decoration: underline;
}

.sidebar-links .bi {
  width: 1.1rem;
  text-align: center;
  opacity: 0.85;
}

.main-content h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.main-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-soft);
}

.card-hover {
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
  border-color: var(--border-soft);
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.pub-item,
.talk-item,
.news-item {
  margin-bottom: 1.25rem;
}

.pub-item .title,
.talk-item .title {
  font-weight: 700;
}

.pub-item .meta,
.talk-item .meta {
  font-size: 0.9rem;
  color: var(--text-muted-custom);
}

.news-item .news-date {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-right: 0.35rem;
  white-space: nowrap;
}

footer.site-footer {
  border-top: 1px solid var(--border-soft);
  font-size: 0.85rem;
  color: var(--text-muted-custom);
}