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

:root {
  --navy:   #1a3a6b;
  --text:   #111;
  --muted:  #666;
  --border: #ddd;
  --max-w:  900px;
}

body {
  font-family: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
  background: #fff;
}

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

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 54px;
}

.nav-name {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 0.1rem;
}

nav ul li a {
  display: block;
  padding: 0.3rem 0.9rem;
  font-size: 1.05rem;
  font-weight: 400;
  text-decoration: none;
  color: var(--muted);
  transition: color 0.15s;
}

nav ul li a:hover,
nav ul li a.active { color: var(--text); font-weight: 600; }

/* ── Main ── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

section { padding-top: 3.5rem; }

/* ── Hero ── */
.hero {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 3.5rem;
  align-items: flex-start;
  padding-top: 1.5rem;
}

.hero-photo {
  width: 400px;
  flex-shrink: 0;
}

.hero-photo-img {
  width: 400px;
  height: 467px;
  overflow: hidden;
}

.photo-meta {
  margin-top: 0.7rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.photo-meta a {
  font-size: 0.82rem;
  color: var(--navy);
  text-decoration: none;
}

.photo-meta a:hover { text-decoration: underline; }

.photo-meta span {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  transform: scale(1.1);
  transform-origin: center 60%;
  display: block;
}

/* ── Name ── */
h1 {
  font-family: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 4.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.0;
  color: var(--text);
  margin-bottom: 1.8rem;
}

.position {
  font-size: 1.05rem;
  color: var(--navy);
  font-weight: 600;
  margin-bottom: 0.1rem;
}

.affiliation {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 1.6rem;
}

.bio {
  font-family: 'Lora', Georgia, serif;
  font-size: 1.1rem;
  line-height: 1.75;
  color: #333;
  margin-bottom: 0.9rem;
}

.contact-line {
  margin-top: 1.6rem;
  font-size: 0.9rem;
  color: var(--muted);
}

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

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

/* ── Section headings ── */
h2 {
  font-size: 3rem;
  font-weight: 400;
  color: var(--text);
  text-align: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.6rem;
  margin-bottom: 2rem;
  letter-spacing: 0;
}

h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 2.2rem;
  margin-bottom: 1rem;
}

/* ── Papers ── */
.paper {
  margin-bottom: 1.6rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--border);
}

.paper:last-of-type { border-bottom: none; }

.paper-title {
  font-family: 'Lora', Georgia, serif;
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.45;
  margin-bottom: 0.25rem;
}

.badge {
  display: inline-block;
  background: #eef2f9;
  color: var(--navy);
  font-family: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  margin-left: 0.5rem;
  vertical-align: middle;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.badge:hover {
  background: var(--navy);
  color: #eef2f9;
}

.paper-authors {
  font-size: 0.92rem;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 0.2rem;
}

.paper-authors a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.paper-authors a:hover { color: var(--navy); }

.paper-links a {
  font-size: 0.85rem;
  color: var(--navy);
  text-decoration: none;
}

.paper-links a:hover { text-decoration: underline; }

.abstract {
  display: none;
  font-family: 'Lora', Georgia, serif;
  font-size: 1rem;
  line-height: 1.7;
  color: #444;
  margin-top: 0.7rem;
  border-left: 2px solid var(--border);
  padding-left: 1rem;
}

/* ── CV list ── */
.cv-list { list-style: none; }

.cv-list li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.97rem;
  line-height: 1.55;
}

.cv-list li:last-child { border-bottom: none; }
.cv-item { flex: 1; }

.cv-year {
  font-size: 0.88rem;
  color: var(--muted);
  white-space: nowrap;
}

/* ── Carousel ── */
.carousel {
  /* break out of main max-width */
  position: relative;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  width: 100vw;
  height: 82vh;
  overflow: hidden;
  background: #111;
  margin-top: 1.5rem;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  transform: translateX(0);
}

.slide.active {
  opacity: 1;
  transform: translateX(0);
  z-index: 2;
}

.slide.prev {
  opacity: 0.4;
  transform: translateX(-87%);
  z-index: 1;
}

.slide.next {
  opacity: 0.4;
  transform: translateX(87%);
  z-index: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.slide-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.6rem 2.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0) 100%);
  color: rgba(255,255,255,0.92);
  font-family: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  font-size: 1.3rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.carousel-btn:hover { background: rgba(255,255,255,0.25); }
.carousel-btn.prev { left: 1.5rem; }
.carousel-btn.next { right: 1.5rem; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.carousel-dots .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.carousel-dots .dot.active { background: var(--navy); }

/* ── Contact ── */
#contact p {
  font-size: 1rem;
  line-height: 1.9;
  color: #444;
}

#contact a { color: var(--navy); text-decoration: none; }
#contact a:hover { text-decoration: underline; }

/* ── Footer ── */
footer {
  background: #111;
  color: #fff;
  text-align: center;
  padding: 3rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-contact p {
  font-size: 0.9rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.85);
}

.footer-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.footer-contact a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
}

.footer-contact a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-updated {
  margin-top: 1.5rem;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── Responsive ── */
@media (max-width: 660px) {
  .hero { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-photo { width: 100%; }
  .hero-photo-img { width: 100%; height: 320px; }
  .hero-photo img { object-position: center 30%; }
  h1 { font-size: 2.8rem; }
  .nav-name { display: none; }
  nav ul { gap: 0; }
  nav ul li a { padding: 0.3rem 0.6rem; font-size: 0.95rem; }
  .carousel { height: 55vh; }
  h2 { font-size: 2.2rem; }
}