:root {
  --bg: #0f172a;
  --fg: #e5e7eb;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --card: #020617;
}

* {
  box-sizing: border-box;
}

.headshot-container {
    display: flex;
    justify-content: center;
    margin: 30px 0;
}

.headshot {
    width: 60vw;
    max-width: 400px;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
    display: block;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

/* Hero */
.hero {
  padding: 4rem 1.5rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.tagline {
  color: var(--muted);
  margin-bottom: 1.5rem;
}

nav a {
  margin: 0 0.75rem;
  font-weight: 500;
}

/* Sections */
.section {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: 12px;
}

.card h3 {
  margin-top: 0;
}

.card a {
  display: inline-block;
  margin-top: 0.75rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ========================= */
/* Publications Page */
/* ========================= */

.publications {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.publications h1 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

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

.pub-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

/* Individual Publication Card */
.publication {
  background: var(--card);
  padding: 1.25rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 1.25rem;
  position: relative;
  border: 1px solid rgba(148, 163, 184, 0.15); /* subtle border for structure */
}

/* Year badge */
.publication .year {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Authors */
.publication .authors {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

/* Title */
.publication .title {
  font-style: italic;
  margin-bottom: 0.25rem;
}

/* Venue */
.publication .venue {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

/* Links */
.publication .links a {
  margin-right: 1rem;
  font-size: 0.9rem;
}

.publication .links a::after {
  content: "•";
  margin-left: 1rem;
  color: var(--muted);
}

.publication .links a:last-child::after {
  content: "";
  margin: 0;
}

/* Responsive */
@media (max-width: 600px) {
  .publication .year {
    position: static;
    display: block;
    margin-bottom: 0.5rem;
  }
}