:root {
  --navy: #002147;
  --red: #E1261C;
  --light-gray: #f5f5f5;
  --spacing: 2rem;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--navy);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing);
}

header {
  margin: 2rem auto -2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding-bottom: 1rem;
  width: 100%;
  flex-wrap: nowrap;
}

.logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

h1 {
  font-size: clamp(1.2rem, 5vw, 2rem);
  color: var(--navy);
  margin: 0;
  line-height: 1;
  white-space: nowrap;
}

@media (max-width: 480px) {
  header {
    gap: 0.5rem;
  }
  
  .logo {
    width: 30px;
    height: 30px;
  }
}

h2 {
  font-size: clamp(1.2rem, 4vw, 1.5rem);
  color: var(--navy);
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--red);
}

.about {
  margin-bottom: var(--spacing);
}

.publications {
  margin-bottom: var(--spacing);
}

ul {
  list-style: none;
}

.publications li {
  margin-bottom: 1rem;
  padding: 1rem;
  background-color: var(--light-gray);
  border-radius: 4px;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: var(--spacing);
}

.social-links a {
  color: var(--navy);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.social-links a:hover {
  color: var(--red);
}

.social-icon {
  width: 24px;
  height: 24px;
}