*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 16px;
  line-height: 1.65;
  color: #222;
  background: #fff;
}

/* ── Navigation ── */
header {
  border-bottom: 1px solid #ddd;
  padding: 0 1.5rem;
}

nav {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.site-name {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: #222;
  text-decoration: none;
  letter-spacing: 0.01em;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav ul a {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.9rem;
  color: #555;
  text-decoration: none;
  letter-spacing: 0.02em;
}

nav ul a:hover,
nav ul a.active {
  color: #1a3a6b;
}

/* ── Page layout ── */
main {
  max-width: 880px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 5rem;
}

/* ── Home: bio ── */
.bio {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: start;
}

.bio-text h1 {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1.65rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: #111;
}

.bio-text .title {
  font-size: 0.95rem;
  color: #444;
  margin-bottom: 0.15rem;
}

.bio-text .fields {
  margin: 1.1rem 0 0.9rem;
  font-style: italic;
  font-size: 0.95rem;
  color: #555;
}

.affiliations {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 1.25rem;
  font-family: system-ui, -apple-system, sans-serif;
}

.contact {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.9rem;
  color: #444;
  line-height: 1.9;
}

.contact a {
  color: #1a3a6b;
  text-decoration: none;
}

.contact a:hover {
  text-decoration: underline;
}

.bio-photo {
  width: 200px;
}

.bio-photo img {
  width: 200px;
  border-radius: 3px;
  display: block;
}

.photo-credit {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.6rem;
  color: #aaa;
  margin-top: 0.4rem;
  text-align: center;
  width: 200px;
}

/* ── Research page ── */
.page-title {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1.6rem;
  font-weight: 500;
  margin-bottom: 2.5rem;
  color: #111;
}

.research-section {
  margin-bottom: 3rem;
}

.section-heading {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #eee;
}

.paper {
  margin-bottom: 1.75rem;
}

.paper-title {
  font-size: 1rem;
  font-weight: bold;
  color: #1a3a6b;
  text-decoration: none;
  line-height: 1.4;
}

.paper-title:hover {
  text-decoration: underline;
}

span.paper-title {
  color: #222;
}

.paper-meta {
  font-size: 0.88rem;
  color: #666;
  margin: 0.2rem 0 0.35rem;
  font-family: system-ui, -apple-system, sans-serif;
}

.paper-links {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.85rem;
}

.paper-links a {
  color: #1a3a6b;
  text-decoration: none;
  margin-right: 0.85rem;
  border: 1px solid #c5d0e0;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}

.paper-links a:hover {
  background: #f0f4f9;
}

/* ── CV page ── */
.cv-section {
  margin-bottom: 2.5rem;
}

.cv-section h2 {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #eee;
}

.cv-section p,
.cv-section li {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  color: #333;
}

.cv-section ul {
  padding-left: 1.2rem;
}

.cv-link {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.95rem;
  color: #1a3a6b;
  text-decoration: none;
}

.cv-link:hover { text-decoration: underline; }

/* ── Footer ── */
footer {
  text-align: center;
  padding: 2rem;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.8rem;
  color: #aaa;
  border-top: 1px solid #eee;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .bio {
    grid-template-columns: 1fr;
  }
  .bio-photo {
    order: -1;
  }
  .bio-photo img {
    width: 120px;
  }
}