:root {
  --max-width: 760px;
  --text: #1f2328;
  --muted: #59636e;
  --accent: #0b6bcb;
  --accent-hover: #084c91;
  --border: #e3e6ea;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 18px;
  padding-bottom: 18px;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}
.brand:hover { text-decoration: none; color: var(--accent); }
.nav { display: flex; gap: 22px; }
.nav a {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.97rem;
}
.nav a:hover { color: var(--accent); text-decoration: none; }
.nav a.active { color: var(--text); }

/* Profile / homepage */
.profile {
  display: flex;
  gap: 32px;
  align-items: center;
  margin: 48px 0 8px;
}
.profile-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
}
.profile-intro h1 {
  margin: 0 0 6px;
  font-size: 2rem;
  letter-spacing: -0.01em;
}
.tagline {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 1.05rem;
}
.profile-links { display: flex; flex-wrap: wrap; gap: 16px; }
.profile-links a { font-weight: 500; font-size: 0.95rem; }

/* Prose / content */
.prose { margin: 40px 0 56px; }
.prose h1 { font-size: 1.9rem; letter-spacing: -0.01em; margin: 0 0 24px; }
.prose h2 {
  font-size: 1.3rem;
  margin: 36px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.prose h3 { font-size: 1.1rem; margin: 24px 0 8px; }
.prose p { margin: 0 0 16px; }
.prose ul { padding-left: 22px; }
.prose li { margin-bottom: 6px; }
.prose img { max-width: 100%; height: auto; }
.prose blockquote {
  margin: 0 0 16px;
  padding: 4px 18px;
  border-left: 3px solid var(--border);
  color: var(--muted);
}

/* Buttons */
.button {
  display: inline-block;
  padding: 8px 16px;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95rem;
}
.button:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }
.cv-download { margin: 0 0 28px; }

/* Publications */
.publications { margin-top: 8px; }
.pub-year { font-size: 1.25rem; }
.pub-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
}
.pub-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.pub-text { display: block; }
.pub-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 8px;
  font-size: 0.9rem;
}
.pub-bibtex summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 500;
}
.pub-bibtex pre {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 0.82rem;
  margin-top: 10px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 28px 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 8px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--accent); }
.copyright { margin: 0; }

/* Responsive */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .profile {
    flex-direction: column;
    text-align: center;
    gap: 18px;
    margin-top: 32px;
  }
  .profile-links { justify-content: center; }
  .header-inner { justify-content: center; }
}