/* ─── Reset & Base ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --accent: #2E5090;
  --accent-light: #3a6bc5;
  --text: #1a1a1a;
  --text-secondary: #555;
  --bg: #fff;
  --bg-alt: #f7f8fa;
  --border: #e0e0e0;
  --max-width: 780px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

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

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 3px solid var(--accent-light);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 24px;
  top: -48px;
  padding: 10px 14px;
  background: var(--text);
  color: #fff;
  border-radius: 4px;
  z-index: 200;
}

.skip-link:focus {
  top: 16px;
}

/* ─── Navigation ─── */
nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.nav-name:hover {
  text-decoration: none;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 12px 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

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

/* ─── Hero ─── */
#hero {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 48px 24px;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 36px;
}

.headshot {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  flex-shrink: 0;
}

.hero-text h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.subtitle span {
  display: block;
}

.hero-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-links a {
  font-size: 0.95rem;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  transition: background 0.15s, color 0.15s;
}

.hero-links a:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

/* ─── Main Content ─── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

main:focus {
  outline: none;
}

section {
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

section:last-child {
  border-bottom: none;
}

h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--accent);
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 10px;
  color: var(--text);
}

p {
  margin-bottom: 12px;
}

ul, ol {
  margin-left: 20px;
  margin-bottom: 12px;
}

li {
  margin-bottom: 6px;
}

/* ─── Publications ─── */
.pub-list {
  list-style: none;
  margin-left: 0;
  counter-reset: pub;
}

.pub-list li {
  counter-increment: pub;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.55;
}

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

.pub-list li::before {
  content: "[" counter(pub) "]";
  font-weight: 600;
  color: var(--accent);
  margin-right: 8px;
}

.paper-link {
  font-size: 0.85rem;
  font-weight: 600;
  margin-left: 4px;
}

/* ─── Timeline ─── */
.timeline {
  margin-bottom: 16px;
}

.timeline-item {
  display: flex;
  gap: 20px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child {
  border-bottom: none;
}

.year {
  min-width: 120px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  padding-top: 2px;
  flex-shrink: 0;
}

.detail {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ─── Document Downloads ─── */
.document-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.document-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-weight: 600;
  transition: background 0.15s;
}

.document-download:hover {
  background: var(--accent-light);
  text-decoration: none;
  color: #fff;
}

/* ─── Footer ─── */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

footer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

footer a {
  color: var(--text-secondary);
}

footer a:hover {
  color: var(--accent);
}

/* ─── Responsive ─── */
@media (max-width: 600px) {
  .nav-inner {
    flex-direction: column;
    gap: 8px;
  }

  .nav-links {
    gap: 14px;
    justify-content: center;
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

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

  .hero-text h1 {
    font-size: 1.6rem;
  }

  .headshot {
    width: 120px;
    height: 120px;
  }

  .timeline-item {
    flex-direction: column;
    gap: 4px;
  }

  .year {
    min-width: unset;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}