/* ==========================================================================
   Site styles — homepage and global components.
   Editorial, content-first, publication-first. Typography does the work;
   borders over shadows; motion near-invisible.
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 0.97rem;            /* ~15.5px */
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-x: clip;
}

img, video { max-width: 100%; display: block; }

a, button { touch-action: manipulation; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover, a:focus-visible {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

::selection { background: var(--accent); color: #FFFFFF; }

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.skip-link:focus { top: 0; color: #FFFFFF; }

/* --- Layout ------------------------------------------------------------- */
.wrap {
  width: min(calc(100% - 48px), var(--page-width));
  margin-inline: auto;
}

main section {
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--border);
}
main section:last-of-type { border-bottom: none; }

/* Mono metadata register — eyebrows, dates, venues, labels */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: var(--space-5);
}

/* --- Navigation --------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 250, 247, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 3.25rem;
}

.nav-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-name:hover { color: var(--ink); text-decoration: none; }

.nav-links {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  font-size: 0.88rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-links a.active { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.nav-toggle span { position: relative; }
.nav-toggle span::before,
.nav-toggle span::after { content: ''; position: absolute; left: 0; }
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* --- Hero / About ------------------------------------------------------- */
.hero { padding-top: var(--space-8); }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 210px;
  gap: var(--space-7);
  align-items: start;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-hover);
  margin-bottom: var(--space-3);
}

h1 {
  font-size: clamp(2.4rem, 5vw, 3.25rem);
  font-weight: 640;
  letter-spacing: -0.028em;
  line-height: 1.04;
  color: var(--ink);
  text-wrap: balance;
  margin-bottom: var(--space-5);
}

.hero-text { max-width: var(--content-width); }

.hero-links {
  font-size: 0.92rem;
  font-weight: 500;
  margin: calc(-1 * var(--space-3)) 0 var(--space-5);
}
.hero-links .sep { color: var(--border); margin: 0 0.5rem; }
.hero-text p { margin-bottom: var(--space-4); }
.hero-text strong { font-weight: 600; }

.interests {
  margin: var(--space-5) 0;
}
.interests-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: var(--space-1);
}
.interests-line { color: var(--text-muted); }
.interests-line .sep { color: var(--border); margin: 0 0.4rem; }

.profile-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: var(--space-4);
  line-height: 1.9;
}
.profile-links .sep { color: var(--border); margin: 0 0.5rem; }

.profile-photo {
  width: 210px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

/* --- Section titles ----------------------------------------------------- */
.section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.section-head h2 {
  font-size: 1.6rem;
  font-weight: 620;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* --- Shared metadata row: venue + badge --------------------------------- */
.meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
}

.venue {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.32em;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #F9F6F2;
  background: var(--ink);
  padding: 0.14rem 0.5rem;
  border-radius: var(--radius-sm);
}

/* --- Selected Research --------------------------------------------------- */
.research-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6) var(--space-5);
}

.research-item { display: flex; flex-direction: column; }

.research-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--media-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-4);
}
.research-media img,
.research-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.research-item:hover .research-media img,
.research-item:hover .research-media video { transform: scale(1.01); }

.research-item h3 {
  font-size: 0.98rem;
  font-weight: 630;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: var(--space-2) 0 var(--space-1);
}
.research-item h3 a { color: var(--ink); }
.research-item h3 a:hover { color: var(--accent-hover); text-decoration: none; }

.research-sub {
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.5;
  margin-bottom: var(--space-2);
}

.research-links,
.pub-links {
  font-size: 0.88rem;
  font-weight: 500;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.research-collab {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 var(--space-2);
  align-self: flex-start;
}
.research-collab span {
  font-size: 0.78rem;
  color: var(--text-subtle);
}
.research-collab img { height: 14px; width: auto; max-width: 56px; object-fit: contain; }

/* --- Publications -------------------------------------------------------- */
.pub-year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-subtle);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border);
  margin: var(--space-7) 0 var(--space-5);
}
.pub-list > .pub-year:first-child { margin-top: 0; }

.pub-entry {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: var(--space-5) 28px;
  padding: var(--space-4) 0;
}
.pub-entry + .pub-entry { border-top: 1px solid var(--border); }

.pub-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
}
.pub-media { position: relative; }
.pub-media img { width: 100%; height: 100%; object-fit: cover; }
.pub-media-collab {
  position: absolute;
  right: 6px;
  bottom: 6px;
  background: rgba(255,255,255,0.92);
  border-radius: var(--radius-sm);
  padding: 2px 4px;
}
.pub-media-collab img { height: 14px; width: auto; }

.pub-info { min-width: 0; }

.pub-title {
  display: inline;
  font-size: 1.04rem;
  font-weight: 630;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
a.pub-title:hover { color: var(--accent-hover); text-decoration: none; }

.pub-authors {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: var(--space-1) 0;
}
.pub-authors .me { font-weight: 600; color: var(--ink); }
.pub-authors u { text-decoration: none; font-weight: 600; color: var(--ink); }

.pub-venue {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  margin: var(--space-1) 0 var(--space-2);
}
.pub-venue-chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.pub-award {
  display: inline-flex;
  align-items: center;
  gap: 0.32em;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #F9F6F2;
  background: var(--ink);
  padding: 0.14rem 0.5rem;
  border-radius: var(--radius-sm);
}

.pub-note, .pub-equal {
  font-size: 0.82rem;
  color: var(--text-subtle);
  margin-bottom: var(--space-1);
}

.pub-collab {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-subtle);
  margin-bottom: var(--space-1);
}
.pub-collab img, .pub-collab-logos img { height: 14px; width: auto; display: inline-block; vertical-align: middle; }

/* --- Experience ---------------------------------------------------------- */
.exp-list { max-width: var(--content-width); }

.exp-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: var(--space-5);
  padding: var(--space-4) 0;
}
.exp-row + .exp-row { border-top: 1px solid var(--border); }

.exp-dates {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-subtle);
  padding-top: 0.2rem;
  white-space: nowrap;
}

.exp-org {
  font-weight: 620;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.exp-org img { height: 26px; width: auto; }
.exp-role { color: var(--text-muted); font-size: 0.92rem; margin-top: 2px; }

/* --- News ---------------------------------------------------------------- */
.news-list { max-width: var(--content-width); list-style: none; }

.news-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  font-size: 0.94rem;
}
.news-item + .news-item { border-top: 1px solid var(--border); }
.news-item[hidden] { display: none; }

.news-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-subtle);
  padding-top: 0.2rem;
  white-space: nowrap;
}
.news-body strong { font-weight: 600; }

.show-more {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: var(--space-4);
  cursor: pointer;
  color: var(--accent);
  background: none;
  border: none;
  padding: 0.35rem 0;
}
.show-more:hover { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 3px; }

/* --- Footer -------------------------------------------------------------- */
.site-footer {
  padding: var(--space-7) 0 var(--space-7);
  border-top: 1px solid var(--border);
}
.footer-name { font-weight: 620; }
.footer-role {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: var(--space-1) 0 var(--space-4);
}
.footer-links {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-4);
}
.footer-links .sep { color: var(--border); margin: 0 0.5rem; }
.footer-copy { color: var(--text-subtle); font-size: 0.82rem; }
.footer-tracker { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --- Responsive ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .research-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .hero-photo { order: -1; }
  .profile-photo { width: 190px; }
}

@media (max-width: 768px) {
  main section { padding: var(--space-7) 0; }
  .pub-entry { grid-template-columns: 150px 1fr; gap: var(--space-4) 20px; }
}

@media (max-width: 680px) {
  .wrap { width: calc(100% - 40px); }

  .nav-toggle { display: inline-flex; }
  .site-nav .wrap { flex-wrap: wrap; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding: var(--space-2) 0 var(--space-3);
    border-top: 1px solid var(--border);
    margin-top: var(--space-2);
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 0.6rem 0.25rem; }

  main section { padding: var(--space-7) 0; }

  .research-grid { grid-template-columns: 1fr; gap: var(--space-6); }

  .pub-entry { grid-template-columns: 1fr; }
  .pub-media { max-width: 420px; }

  .exp-row { grid-template-columns: 1fr; gap: var(--space-1); padding: var(--space-3) 0; }
  .exp-dates { padding-top: 0; }

  .news-item { grid-template-columns: 1fr; gap: var(--space-1); }
  .news-date { padding-top: 0; }
}

@media (max-width: 430px) {
  .profile-links .sep { display: none; }
  .profile-links a { margin-right: var(--space-4); }
}

/* --- Reduced motion ------------------------------------------------------ */
@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;
  }
  .research-item:hover .research-media img,
  .research-item:hover .research-media video { transform: none; }
}

.badge .medal,
.pub-award .medal {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  color: #E8B44C;
}