/* =========================================================
   Tokens
   ========================================================= */
:root {
  --paper: #F7F5F0;
  --ink: #201F1B;
  --ink-soft: #625E54;
  --ink-faint: #8B8678;
  --rule: #DEDACD;
  --accent: #2B4C43;
  --accent-soft: #E4E9E3;

  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --content-max: 720px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #FFFF;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

a:hover,
a:focus-visible {
  border-bottom-color: currentColor;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  margin: 0;
}

h1 {
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* =========================================================
   Site header / nav (repeated on every page)
   ========================================================= */
.site-header {
  border-bottom: 1px solid var(--rule);
  background: #6F828C;
}

.site-header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 22px 32px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.site-name {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: #FFFF;
  border-bottom: none;
}

.topnav-links {
  display: flex;
  gap: 22px;
  font-size: 0.92rem;
}

.topnav-links a {
  color: #FFFF;
  border-bottom: none;
}

.topnav-links a:hover,
.topnav-links a:focus-visible {
  color: var(--accent);
}

.topnav-links a.is-active {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

/* =========================================================
   Main content
   ========================================================= */
.content {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 56px 32px 96px;
}

.section {
  margin-bottom: 56px;
}

.section:last-child {
  margin-bottom: 0;
}

.section h1 {
  margin-bottom: 20px;
}

.section-intro {
  color: var(--ink-soft);
  margin: 0 0 20px;
}

/* ---------- About ---------- */
.about-grid {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.headshot {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  border: 1px solid var(--rule);
  flex: 0 0 auto;
}

.about-grid h1 {
  margin-bottom: 8px;
}

.role {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ---------- Education ---------- */
.entry {
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.entry:last-child {
  border-bottom: none;
}

.entry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}

.entry-head h3 {
  font-size: 1.05rem;
  font-weight: 500;
}

.entry-date {
  font-size: 0.85rem;
  color: var(--ink-faint);
  white-space: nowrap;
}

.entry-sub {
  margin: 6px 0 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.entry-desc {
  margin: 6px 0 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

/* ---------- Research (figure + text) ---------- */
.research-entry {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 64px;
}

.research-entry:last-child {
  margin-bottom: 0;
}

.research-figure {
  margin: 0;
  width: 100%;
}

.research-figure img {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  background: #FFFFFF;
  display: block;
  border-radius: 2px;
}

.research-figure figcaption {
  margin-top: 8px;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--ink-faint);
}

.research-text h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

/* ---------- Publications ---------- */
.pub {
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}

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

.pub-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
}

.pub-meta {
  margin: 6px 0 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.pub-links {
  margin: 6px 0 0;
  font-size: 0.85rem;
}

.pub-links a {
  color: var(--accent);
}

/* ---------- Contact ---------- */
.contact-email a {
  font-family: var(--serif);
  font-size: 1.2rem;
}

.contact-social {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.95rem;
}

/* ---------- Fieldwork gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.gallery-item {
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 2px;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.25s ease;
}

.gallery-item:hover img,
.gallery-item:focus-visible img {
  transform: scale(1.04);
}

.gallery-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(16, 15, 13, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 40px;
}

.lightbox.is-open {
  display: flex;
}

.lightbox-img {
  max-width: min(1100px, 100%);
  max-height: 100%;
  object-fit: contain;
  border-radius: 2px;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  background: none;
  border: none;
  color: #F7F5F0;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 10px;
  line-height: 1;
}

.lightbox-close {
  top: 20px;
  right: 24px;
  font-size: 2rem;
}

.lightbox-prev { left: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 16px; top: 50%; transform: translateY(-50%); }

.lightbox-close:hover,
.lightbox-nav:hover {
  color: var(--accent-soft);
}

/* =========================================================
   Site footer (repeated on every page)
   ========================================================= */
.site-footer {
  border-top: 1px solid var(--rule);
}

.site-footer-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.footer-links {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
}

.footer-links a {
  color: var(--ink-soft);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent);
}

.site-footer-inner p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 720px) {
  .site-header-inner {
    padding: 18px 20px;
  }

  .topnav-links {
    gap: 14px;
    flex-wrap: wrap;
  }

  .content {
    padding: 40px 20px 72px;
  }

  .about-grid {
    flex-direction: column;
    gap: 16px;
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 20px;
  }
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  a {
    transition: none;
  }
}