:root {
  --text: #212529;
  --muted: #6c757d;
  --accent: #0b7285;
  --accent-dark: #095c6b;
  --border: #e9ecef;
  --bg: #ffffff;
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Inter", -apple-system, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

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

a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Top navigation */

.topnav {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 1.6rem 1.5rem 0;
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.topnav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

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

.topnav a.active {
  color: var(--text);
  font-weight: 600;
}

/* Main column */

.page {
  flex: 1;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 2.8rem 1.5rem 3rem;
}

/* Intro */

h1 {
  margin: 0 0 0.3rem;
  font-size: clamp(1.9rem, 4.5vw, 2.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 .accent {
  color: var(--accent);
  font-weight: 400;
}

.affiliation {
  margin: 0 0 2rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.intro-body {
  margin-bottom: 1.6rem;
}

.intro-body::after {
  content: "";
  display: block;
  clear: both;
}

.pic {
  float: right;
  width: 280px;
  height: auto;
  margin: 0.3rem 0 1rem 1.8rem;
  border-radius: 8px;
}

.intro-body p {
  margin: 0 0 1rem;
}

.intro-body p:last-child {
  margin-bottom: 0;
}

/* Social row */

.social {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}

.social a,
.social button {
  color: var(--muted);
  font-size: 1.25rem;
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
  transition: color 140ms ease;
  line-height: 1;
}

.social a:hover,
.social button:hover {
  color: var(--accent);
  text-decoration: none;
}

.email-reveal {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Section headings (teaching page) */

h2 {
  margin: 2.6rem 0 1.2rem;
  font-size: 1.45rem;
  font-weight: 300;
  letter-spacing: -0.01em;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

h2:first-child {
  margin-top: 0;
}

/* Entries (teaching page) */

.entry {
  margin-bottom: 1.7rem;
}

.entry h3 {
  margin: 0 0 0.1rem;
  font-size: 1.02rem;
  font-weight: 600;
}

.entry-meta {
  margin: 0 0 0.4rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.entry p {
  margin: 0;
  color: #40464c;
}

/* Publication list */

.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.pub-title {
  display: block;
  font-weight: 600;
}

.pub-authors {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Footer */

.footer {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: #adb5bd;
}

.footer p {
  margin: 0 0 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  .topnav {
    justify-content: center;
  }

  h1,
  .affiliation {
    text-align: center;
  }

  .pic {
    float: none;
    display: block;
    margin: 0 auto 1.4rem;
    width: min(320px, 100%);
  }

  .social {
    justify-content: center;
  }
}