/* === Tokens (light) === */
:root {
  --bg:           white;
  --bg-outer:     #FAF8F0;
  --bg-alt:       #EFECE3;
  --fg:           #1A1916;
  --fg-muted:     #6A6A60;
  --accent:       #1a6abf;
  --accent-muted: #90b8e8;
  --accent-dark:  #0f4a8a;
  --link:         var(--accent);
  --link-vis:     #0f4a8a;
  --border:       #CECCBF;
  --rule:         #D0CEBC;

  --font-body: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-mono: 'Source Code Pro', 'Courier New', monospace;

  --hl-type:   #176017;
  --hl-key:    #7a3b10;
  --hl-field:  #6A6A60;
  --hl-string: #1a5796;
  --hl-num:    #a03030;

  --sz-xs:   11.5px;
  --sz-sm:   13px;
  --sz-base: 16px;
  --sz-md:   17px;
  --sz-lg:   21px;
  --sz-xl:   28px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:           #1A1918;
    --bg-outer:     #111110;
    --bg-alt:       #232220;
    --fg:           #E4E2DA;
    --fg-muted:     #88887E;
    --accent:       #5a9fe0;
    --accent-muted: #1a3a5a;
    --accent-dark:  #78b8f0;
    --link:         var(--accent);
    --link-vis:     #4a8fd0;
    --border:       #2E2D28;
    --rule:         #3A3830;

    --hl-type:   #5a9fe0;
    --hl-key:    #d4a27a;
    --hl-field:  #88887E;
    --hl-string: #6aaddc;
    --hl-num:    #e07070;
  }
}

:root[data-theme="dark"] {
  --bg:           #1A1918;
  --bg-outer:     #111110;
  --bg-alt:       #232220;
  --fg:           #E4E2DA;
  --fg-muted:     #88887E;
  --accent:       #5a9fe0;
  --accent-muted: #1a3a5a;
  --accent-dark:  #78b8f0;
  --link:         var(--accent);
  --link-vis:     #4a8fd0;
  --border:       #2E2D28;
  --rule:         #3A3830;

  --hl-type:   #5a9fe0;
  --hl-key:    #d4a27a;
  --hl-field:  #88887E;
  --hl-string: #6aaddc;
  --hl-num:    #e07070;
}

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

/* === Base === */
body {
  font-family: var(--font-body);
  font-size: var(--sz-base);
  line-height: 1.68;
  color: var(--fg);
  background: var(--bg-outer);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-y: scroll;
  scrollbar-gutter: stable;
}

/* === Paper === */
.paper {
  margin: 0 auto;
  background: var(--bg);
  min-height: 100vh;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.06), 0 1px 6px rgba(0,0,0,0.04);
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover { text-decoration: underline; }
a:visited { color: var(--link-vis); }

p {
  margin-bottom: 1rem;
  text-align: justify;
  hyphens: none;
  overflow-wrap: break-word;
}
p:last-child { margin-bottom: 0; }

/* === Layout === */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* === Navigation === */
.site-nav {
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.site-nav .container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  column-gap: 1rem;
  row-gap: 0.35rem;
}

.site-nav nav {
  display: flex;
  align-items: center;
  justify-self: end;
  grid-column: 3;
  grid-row: 1;
}

.brand-affiliations {
  font-size: var(--sz-sm);
  color: var(--fg);
  line-height: 1.5;
  font-style: italic;
  grid-column: 1;
  grid-row: 2;
  align-self: center;
}

.brand-name {
  display: block;
  font-size: 22px;
  font-weight: 400;
  white-space: nowrap;
  line-height: 1;
  color: var(--fg);
  grid-column: 1;
  grid-row: 1;
  align-self: center;
}
.brand-name-link {
  color: var(--fg);
  text-decoration: none;
}
.brand-name strong { font-weight: 600; }
.brand-name sup {
  font-size: 0.45em;
  vertical-align: super;
  line-height: 0;
  font-weight: 400;
}
.brand-affiliations sup { font-size: 0.75em; }
.brand-name-link:hover, .brand-name-link:visited { color: var(--fg); text-decoration: none; }
.brand-name sup a { color: var(--fg-muted); text-decoration: none; }
.brand-name sup a:hover { color: var(--accent); }
.brand-affiliations sup a { color: var(--fg-muted); text-decoration: none; }
.brand-affiliations sup a:hover { color: var(--accent); }

.nav-avatar {
  display: block;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 1.5px solid #1A1916;
  position: relative;
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
}

.nav-avatar img {
  position: absolute;
  width: 220%;
  height: auto;
  left: 50%;
  top: 50%;
  transform: translate(-35%, -52%);
}

.nav-icons {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  justify-self: end;
  grid-column: 3;
  grid-row: 2;
}

.nav-icons svg {
  width: 17px;
  height: 17px;
}

.nav-icons a {
  display: inline-flex;
  align-items: center;
  transition: opacity 0.12s;
}
.nav-icons a:hover { opacity: 0.7; text-decoration: none; }
.nav-icons a:visited { color: inherit; }

.nav-icons a[aria-label="Email"]          { color: var(--fg-muted); }
.nav-icons a[aria-label="Google Scholar"] { color: #4285F4; }
.nav-icons a[aria-label="ORCID"]          { color: #A6CE39; }
.nav-icons a[aria-label="ACL Anthology"]  { color: #C41230; }
.nav-icons a[aria-label="GitHub"]         { color: var(--fg-muted); }

.nav-links {
  display: flex;
  gap: 1.6rem;
  list-style: none;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  font-size: var(--sz-base);
  color: var(--fg);
  letter-spacing: 0.01em;
}
.nav-links a.active {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.nav-links a:visited { color: var(--fg); }
.nav-links a.active:visited { color: var(--accent); }

.nav-links a:focus-visible,
.theme-toggle:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.theme-toggle {
  font-size: 13px;
  color: var(--fg);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  font-family: var(--font-body);
  line-height: 1;
  transition: color 0.12s;
  vertical-align: baseline;
  margin-left: 1rem;
}
.theme-toggle:hover { opacity: 0.7; }

/* === Main === */
main { padding: 1.5rem 0 1rem; }

/* === Typography === */
h1 {
  font-size: var(--sz-xl);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  text-wrap: balance;
}

h2 {
  font-size: var(--sz-md);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 2.8rem;
  margin-bottom: 1.1rem;
  text-wrap: balance;
  border-bottom: 1px solid var(--accent-muted);
  padding-bottom: 0.3rem;
}

h3 {
  font-size: var(--sz-base);
  font-weight: 600;
  line-height: 1.4;
  text-wrap: balance;
}

/* === Inline citation refs === */
.cite-ref {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.88em;
  font-weight: 700;
}

/* === About page === */

.about-position {
  font-size: var(--sz-base);
  font-style: italic;
  color: var(--fg-muted);
  margin-bottom: 1.5rem;
}

.about-bio { margin-bottom: 1.5rem; }

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0;
  font-size: var(--sz-sm);
  margin-top: 1.4rem;
}

.about-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--fg-muted);
  padding-right: 1.3rem;
  position: relative;
}
.about-links a svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  opacity: 0.75;
}
.about-links a::after {
  content: '·';
  position: absolute;
  right: 0.4rem;
  color: var(--border);
}
.about-links a:last-child::after { display: none; }
.about-links a:hover { color: var(--link); text-decoration: none; }
.about-links a:hover svg { opacity: 1; }
.about-links a:visited { color: var(--fg-muted); }

.interests {
  color: var(--fg-muted);
  line-height: 2;
  font-size: var(--sz-base);
}

/* === Publications === */
.pub-year-group { margin-bottom: 1rem; }

.pub-year-label {
  font-size: var(--sz-sm);
  font-weight: 600;
  color: var(--fg-muted);
  border-bottom: 1px solid var(--accent-muted);
  padding-bottom: 0.3rem;
  margin-bottom: 1.2rem;
  margin-top: 1.8rem;
}

.pub-entry {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  margin-bottom: 1.2rem;
}

.pub-abstract-heading {
  font-size: var(--sz-base);
  font-weight: 400;
  line-height: 1.4;
  margin-bottom: 0.4rem;
}

.pub-abstract-heading .pub-abstract-label {
  color: var(--fg);
}

.pub-abstract-heading .pub-abstract-title,
.pub-abstract-heading .pub-abstract-title a {
  color: var(--accent-dark);
}
.pub-abstract-heading .pub-abstract-title a:hover {
  color: var(--accent);
  text-decoration: none;
}

.pub-abstract {
  font-size: var(--sz-base);
  line-height: 1.65;
  margin-bottom: 1rem;
  text-align: justify;
  hyphens: none;
  overflow-wrap: break-word;
  background: rgba(128, 128, 128, 0.06);
  padding: 0.65rem 0.9rem;
  border-radius: 2px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.07), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

.pub-apa {
  font-size: var(--sz-sm);
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 0.55rem;
}

.pub-num {
  flex-shrink: 0;
  width: 1.5rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--sz-sm);
  font-weight: 700;
}

.pub-body {
  flex: 1;
  min-width: 0;
}

.pub-title {
  font-size: var(--sz-base);
  font-weight: 400;
  line-height: 1.4;
  margin-bottom: 0.2rem;
  color: var(--accent-dark);
}

.pub-title a { color: var(--accent-dark); }
.pub-title a:hover { color: var(--accent); text-decoration: none; }

.pub-authors {
  font-size: var(--sz-sm);
  font-style: italic;
  color: var(--fg-muted);
  margin-bottom: 0.15rem;
}

.pub-authors strong {
  font-style: normal;
  font-weight: 500;
  color: var(--fg);
}

.pub-venue {
  font-size: var(--sz-sm);
  color: var(--fg-muted);
  margin-bottom: 0.55rem;
}

.pub-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pub-link, .bibtex-toggle {
  display: inline-block;
  font-size: 12.5px;
  font-family: var(--font-body);
  color: var(--accent);
  border: 1px solid var(--accent-muted);
  padding: 1px 8px 2px;
  border-radius: 2px;
  background: none;
  cursor: pointer;
  transition: color 0.12s, border-color 0.12s;
  line-height: 1.6;
  text-decoration: none;
}

.pub-link:hover, .bibtex-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

.pub-link:visited { color: var(--accent); }

.cite-count {
  font-size: var(--sz-xs);
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
  margin-left: 0.3rem;
}

.bibtex-block {
  display: none;
  margin-top: 0.8rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1rem 1.1rem;
}

.bibtex-block.open { display: block; }

.bibtex-block pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.bib-t  { color: var(--hl-type); }
.bib-k  { color: var(--hl-key); font-style: italic; }
.bib-f  { color: var(--hl-field); }
.bib-eq { color: var(--hl-field); }
.bib-v  { color: var(--hl-string); }
.bib-n  { color: var(--hl-num); }

/* === Publications title bar === */
.pub-title-bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.pub-title-bar h1 { margin-bottom: 0; }

.pub-count {
  font-size: var(--sz-sm);
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}

/* === CV === */
.cv-section { margin-bottom: 0.5rem; }

.cv-entries { display: flex; flex-direction: column; gap: 1.4rem; }

.cv-entry { margin-bottom: 1.4rem; }

.cv-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.cv-role {
  font-weight: 500;
  line-height: 1.35;
}

.cv-date {
  font-size: var(--sz-xs);
  color: var(--fg-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.cv-org {
  font-style: italic;
  color: var(--fg-muted);
  font-size: var(--sz-sm);
}

.cv-desc {
  font-size: var(--sz-sm);
  color: var(--fg-muted);
  margin-top: 0.1rem;
}

.cv-list {
  font-size: var(--sz-sm);
  color: var(--fg-muted);
  padding-left: 1.2rem;
  margin-top: 0.1rem;
  margin-bottom: 0;
}

.cv-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.cv-skill {
  font-size: var(--sz-xs);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 1px 8px 2px;
  border-radius: 2px;
}

.cv-title-bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.cv-title-bar h1 { margin-bottom: 0; }

.cv-download {
  display: inline-block;
  font-size: var(--sz-sm);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 2px;
  transition: color 0.12s, border-color 0.12s;
  white-space: nowrap;
}
.cv-download:hover { color: var(--link); border-color: var(--link); text-decoration: none; }

.cv-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.5rem;
}

.cv-photo {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 3px;
}

/* === Blog === */
.blog-intro { color: var(--fg-muted); font-style: italic; }

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.5rem;
}

.blog-tag {
  font-size: var(--sz-xs);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 2px 9px 3px;
  border-radius: 2px;
}

/* === Footer === */
footer {
  border-top: 1px solid var(--border);
  padding: 1.4rem 0;
}

footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: var(--sz-xs);
  color: var(--fg-muted);
}

footer a { color: var(--fg-muted); }
footer a:hover { color: var(--link); }
footer a:visited { color: var(--fg-muted); }

/* === More link === */
.more-link {
  font-size: var(--sz-sm);
  display: inline-block;
  margin-top: 0.4rem;
}

/* === Section title bar (heading + right-aligned link) === */
.recent-pubs-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-top: 2.8rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--accent-muted);
  padding-bottom: 0.3rem;
}
.recent-pubs-header h2 {
  margin-top: 0;
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}

/* === Accent picker === */
.accent-picker {
  position: fixed;
  bottom: 1.6rem;
  right: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 7px;
  z-index: 200;
}

.accent-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  padding: 0;
  cursor: pointer;
  background: var(--dot-color);
  box-shadow: 0 0 0 1.5px transparent, 0 0 0 0 transparent;
  transition: box-shadow 0.12s, transform 0.12s;
  outline: none;
}

.accent-dot:hover {
  transform: scale(1.25);
}

.accent-dot.active {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 3.5px var(--dot-color);
}

.accent-dot:focus-visible {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 3.5px var(--accent);
}

/* === Responsive === */
@media (max-width: 600px) {
  .container { padding: 0 1.2rem; }
  :root {
    --sz-base: 15px;
    --sz-xl:   24px;
  }
  .site-nav .container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: center;
  }
  .brand-name { order: 1; flex: 1; }
  .nav-avatar { order: 2; width: 56px; height: 56px; grid-row: auto; }
  .site-nav nav { order: 3; width: 100%; justify-content: flex-end; }
  .brand-affiliations { order: 4; width: 100%; }
  .nav-icons { order: 5; width: 100%; justify-content: flex-end; justify-self: auto; }
  .nav-links { gap: 1.1rem; }
  .cv-head { flex-direction: column; gap: 0.1rem; }
  .cv-hero { gap: 1rem; }
  .cv-avatar { width: 62px; height: 62px; }
  .cv-photos { grid-template-columns: 1fr; }
  .cv-photo { height: 240px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}