/* =========================================================
   Wonseok Oh — academic single-column site
   Inter (body) · Fraunces (name) · vivid cobalt accent
   ========================================================= */

:root {
  --bg:         #ffffff;
  --ink:        #16181d;
  --ink-soft:   #545a66;
  --line:       #e7e8ee;
  --cobalt:     #2f5fd0;          /* comfortable cobalt — section titles & toggle */
  --cobalt-2:   #1f47a8;
  --cobalt-soft:#e9eefb;
  --oral:       #e11414;          /* vivid red — for "Oral" */
  --link:       #3b8ee8;          /* light blue (jonbarron-style, a touch lighter) */
  --link-hover: #1772d0;
  --photo-bg:   #ffffff;          /* fill behind the contained profile photo */
}

html[data-theme="dark"] {
  --bg:         #0c0e14;
  --ink:        #eceef4;
  --ink-soft:   #a3a9b8;
  --line:       #232634;
  --cobalt:     #6f9aff;
  --cobalt-2:   #9bb8ff;
  --cobalt-soft:#172138;
  --oral:       #ff5252;
  --link:       #5b8cff;
  --link-hover: #87a8ff;
  --photo-bg:   #1a1d27;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0 22px;            /* side gutters so content never sticks to the edges */
  background-color: var(--bg);
  color: var(--ink);
  text-rendering: optimizeLegibility;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* body type — Lato, medium scale; thickness comes from native (non-antialiased) rendering */
body, td, th, tr, p, a, li {
  font-family: "Lato", Verdana, Helvetica, sans-serif;
  font-size: 15px;
  font-weight: 400;
}

strong {
  font-family: "Lato", Verdana, Helvetica, sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

/* ---------- Links (light blue, subtle underline grow) ---------- */
a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s ease;
  position: relative;
}
a:hover { color: var(--link-hover); }
a::after {
  content: '';
  position: absolute; width: 0; height: 1.5px; bottom: -1px; left: 0;
  background: var(--link);
  transition: width 0.25s ease;
}
a:hover::after { width: 100%; }

/* ---------- Headings: cobalt blue text, no bar ---------- */
heading {
  font-family: "Inter", sans-serif;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cobalt);
  display: inline-block;
  padding-bottom: 2px;
  margin-bottom: 0px;
}

papertitle {
  font-family: "Inter", sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

university {
  font-family: "Inter", sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

honor {
  font-family: "Inter", sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

name {
  font-family: "Fraunces", "Palatino Linotype", Palatino, serif;
  font-weight: 600;
  font-size: 32px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

cname {
  font-family: 'Nanum Myeongjo', 'KaiTi', 'STKaiti', serif, "Inter", sans-serif;
  font-weight: 400;
  font-size: 20px;
  color: var(--ink-soft);
  margin-left: 6px;
}

.accent-strong { color: var(--oral); font-weight: 700; }

span.highlight { background-color: var(--cobalt-soft); }

/* ---------- Publication toggle buttons ---------- */
.button {
  background: color-mix(in srgb, var(--link) 14%, transparent);
  border: 1px solid transparent;
  border-radius: 100px;
  padding: 4px 14px;
  cursor: pointer;
  font-family: "Inter", sans-serif;
  font-size: 0.85em;
  font-weight: 600;
  color: var(--link);
  margin: 0 0.1em;
}
.button::after { display: none; }
.button:hover { color: var(--link-hover); }
.selected-button {
  background: var(--link);
  color: #ffffff !important;
  border-color: transparent;
  box-shadow: 0 2px 8px -2px color-mix(in srgb, var(--link) 55%, transparent);
}

/* ---------- Social icons ---------- */
.social-icons a {
  display: inline-block;
  margin: 0 11px;
  font-size: 23px;
  color: var(--link);
}
.social-icons a:hover { color: var(--link-hover); }
.social-icons a::after { display: none; }
.social-icons a i { width: 23px; text-align: center; }

/* ---------- Layout tables ---------- */
.content-table {
  width: 100%;
  border: 0px;
  border-spacing: 0px;
  border-collapse: separate;
  margin-right: auto;
  margin-left: auto;
  margin-bottom: 6px;
  animation: fadeIn 0.5s ease-out;
}

/* a touch more breathing room above each section heading */
.content-table:has(heading) { margin-top: 14px; }

.section-wrapper {
  padding: 0%;
  width: 96%;
  border: 0px;
  border-spacing: 0px;
  border-collapse: separate;
  margin-right: auto;
  margin-left: auto;
  margin-bottom: 22px;
}

.section-content {
  padding: 0px 10px;
  width: 100%;
  vertical-align: middle;
}
/* tighten the gap between a heading and its first paragraph */
.section-content > p:first-child { margin-top: 0; }
/* pull each section's content closer to its heading */
.content-table:has(heading) + .section-wrapper,
.content-table:has(heading) + .content-table { margin-top: 0; }

.publication-media {
  padding: 12px 22px;
  width: 30%;
  vertical-align: middle;
  text-align: center;
}
.publication-media img,
.publication-media video {
  max-width: 100%;
  border-radius: 8px;
}

.publication-details {
  width: 70%;
  vertical-align: middle;
}
.publication-details papertitle { line-height: 1.35; }

.publication-description {
  margin-bottom: 0px;
  margin-top: 6px;
  color: var(--ink-soft);
}

.experience-logo {
  padding: 10px 24px;
  width: 25%;
  vertical-align: middle;
  text-align: center;
}
.experience-logo .exp-logo {
  display: inline-block;
  max-width: 150px;
  max-height: 92px;
  width: auto;
  height: auto;
  object-fit: contain;
}
.years {
  font-weight: 700;
  color: var(--link);
}

.experience-details {
  width: 75%;
  vertical-align: top;
  padding: 4px 0 10px;
}

/* ---------- Publication filtering (Recent / Others) ---------- */
.publications-container.show-recent [data-group="others"] { display: none; }
.publications-container.show-others [data-group="recent"] { display: none; }

/* list rhythm */
li { padding: 3px 0; }

/* tight lists for Service / Selected Honors — flush to the heading */
ul.tight { margin: 0; padding-left: 20px; }
ul.tight li { padding: 2px 0; line-height: 1.45; }

/* ---------- News: distinct boxed feed (own teal accent) ---------- */
:root        { --news-accent: #0d9488; --news-panel: #f4fbfa; --news-line: #d3ece8; }
html[data-theme="dark"] { --news-accent: #2dd4bf; --news-panel: #0f1b1a; --news-line: #1f3b38; }

/* centered, narrower card wrapper */
.news-block { display: flex; justify-content: center; margin: 4px 0 22px; }
.news-card {
  width: 100%;
  max-width: 560px;
  background: var(--news-panel);
  border: 1px solid var(--news-line);
  border-left: 3px solid var(--news-accent);
  border-radius: 8px;
  overflow: hidden;
}
.news-card__head {
  font-family: "Inter", sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--news-accent);
  padding: 9px 16px;
  border-bottom: 1px solid var(--news-line);
  background: color-mix(in srgb, var(--news-accent) 8%, transparent);
}

.news {
  margin: 0;
  max-height: 128px;                /* ~65% of the previous height; scrolls if it grows */
  overflow-y: auto;
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 14px;
  row-gap: 0;
  align-items: baseline;
  padding: 6px 16px;
  font-size: 13px;                  /* slightly smaller than body */
}
.news dt {
  font-family: "Inter", sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--news-accent);
  white-space: nowrap;
  padding: 6px 0;
}
.news dd {
  margin: 0;
  line-height: 1.4;
  padding: 6px 0;
  border-bottom: 1px solid var(--news-line);
}
.news dt { border-bottom: 1px solid var(--news-line); }
.news dt:last-of-type, .news dd:last-of-type { border-bottom: 0; }
/* tidy scrollbar */
.news::-webkit-scrollbar { width: 7px; }
.news::-webkit-scrollbar-thumb { background: var(--news-line); border-radius: 4px; }

@media (max-width: 768px) {
  .news-card { max-width: 100%; }
  .news { column-gap: 10px; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  position: fixed; top: 16px; right: 16px; z-index: 100;
  cursor: pointer; width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--line); color: var(--ink);
  font-size: 15px; display: grid; place-items: center;
  transition: border-color 0.2s ease;
}
.theme-toggle::after { display: none; }
.theme-toggle:hover { border-color: var(--cobalt); }
html[data-theme="dark"] .theme-toggle__icon { font-size: 0; }
html[data-theme="dark"] .theme-toggle__icon::before { content: "☀"; font-size: 15px; }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  name { font-size: 30px !important; }
  cname { font-size: 20px !important; }
  heading { font-size: 19px; }
  .section-wrapper { padding: 5px; }
  .publication-media,
  .experience-logo {
    width: 100% !important;
    display: block;
    padding: 6px !important;
    text-align: left;
  }
  .publication-details,
  .experience-details {
    width: 100% !important;
    display: block;
  }
}

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