:root {
  --primary: #1f4e79;
  --secondary: #4f6d7a;
  --accent: #e6f0f7;
  --text: #1f2933;
  --muted: #6b7280;
  --border: #e5e7eb;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  line-height: 1.65;
  background-color: #fafafa;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header / Hero */

.site-header {
  background: linear-gradient(135deg, var(--primary), #163a5a);
  color: white;
  padding: 3.5rem 0;
}

.hero {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.photo {
  width: 190px;
  height: 190px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.3);
}

.hero-text h1 {
  margin: 0;
  font-size: 2.25rem;
  font-weight: 700;
}

.title {
  margin-top: 0.5rem;
  font-weight: 500;
  opacity: 0.95;
}

.subtitle {
  margin-top: 0.75rem;
  opacity: 0.9;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
}

.btn.primary {
  background: white;
  color: var(--primary);
}

.btn.primary:hover {
  background: #f0f4f8;
}

.btn.secondary {
  border: 1px solid rgba(255,255,255,0.6);
  color: white;
}

.btn.secondary:hover {
  background: rgba(255,255,255,0.1);
}

/* Sections */

main {
  padding: 3rem 0 4rem;
}

section {
  margin-bottom: 3rem;
}

h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

/* Cards */

.card {
  background: var(--white);
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

/* Highlights */

.highlights {
  margin-top: 1.5rem;
  padding-left: 1.25rem;
}

.highlights li {
  margin-bottom: 0.5rem;
}

/* Services */

.services {
  text-align: center;
}

.service-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--white);
  padding: 1.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  text-align: left;
}

.service-card h3 {
  margin-top: 0;
  color: var(--secondary);
}

/* Contact Callout */

.callout {
  background: var(--accent);
  border-radius: 12px;
  padding: 2.5rem;
}

.contact-info {
  margin-top: 1rem;
  font-size: 1.05rem;
}

.contact a {
  color: var(--primary);
  text-decoration: none;
}

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

/* Footer */

.site-footer {
  background: #f1f5f9;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Responsive */

@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }
}

/* Publications */

.publications {
  margin-top: 3rem;
}

.pub-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
}

.pub-list li {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 1.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.pub-list li:last-child {
  border-bottom: none;
}

.pub-year {
  font-weight: 600;
  color: var(--secondary);
  font-size: 0.95rem;
}

.pub-title {
  margin: 0;
  font-weight: 500;
}

.pub-meta {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.pub-note {
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}