:root {
  --bg: #ffffff;
  --text: #1f2328;
  --muted: #5f6b76;
  --link: #1772d0;
  --link-hover: #f09228;
  --border: #e4e7eb;
  --tile: #f3f5f8;
  --tile-text: #7b8794;
  --code-bg: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111418;
    --text: #e3e6ea;
    --muted: #9aa4af;
    --link: #5aa9ff;
    --link-hover: #f5a35a;
    --border: #2a3038;
    --tile: #1b2026;
    --tile-text: #8a95a1;
    --code-bg: #1b2026;
  }
}

:root[data-theme="dark"] {
  --bg: #111418;
  --text: #e3e6ea;
  --muted: #9aa4af;
  --link: #5aa9ff;
  --link-hover: #f5a35a;
  --border: #2a3038;
  --tile: #1b2026;
  --tile-text: #8a95a1;
  --code-bg: #1b2026;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Lato", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover, a:focus-visible { color: var(--link-hover); }

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 24px 40px;
}

/* ---------- About Me ---------- */

.intro {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 44px;
  align-items: center;
  margin-bottom: 48px;
}

.name {
  margin: 0 0 16px;
  font-size: 2.1rem;
  font-weight: 400;
  text-align: center;
  letter-spacing: 0.01em;
}

.intro-text p { margin: 0 0 14px; }

.contact {
  text-align: center;
  color: var(--muted);
}

.intro-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
}

/* ---------- Publications ---------- */

h2 {
  margin: 0 0 4px;
  font-size: 1.45rem;
  font-weight: 400;
}

.legend {
  margin: 0 0 12px;
  font-size: 0.85rem;
  color: var(--muted);
}

.pub {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
  padding: 18px 0;
}

/* 모든 썸네일을 같은 2:1 틀에 맞추고 가운데 정렬 */
.pub-thumb {
  aspect-ratio: 2 / 1;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #ffffff; /* teaser 배경이 흰색이라 다크 모드에서도 흰색 유지 */
  overflow: hidden;
}

.pub-thumb img,
.pub-thumb video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 영상은 여백 없이 틀을 꽉 채움 (16:9 -> 2:1, 위아래 약간 잘림) */
.pub-thumb.is-video { padding: 0; }
.pub-thumb.is-video video { object-fit: cover; }

.pub-thumb.is-empty {
  background: var(--tile);
  display: flex;
  align-items: center;
  justify-content: center;
}

.thumb-label {
  padding: 0 12px;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--tile-text);
}

.pub-title {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.4;
  margin-bottom: 4px;
}

.pub-authors { font-size: 0.95rem; }
.pub-authors .self { color: var(--text); }
.pub-authors sup, .legend sup { font-size: 0.7em; }

.pub-venue {
  font-size: 0.95rem;
  color: var(--muted);
}

.pub-links {
  margin-top: 4px;
  font-size: 0.95rem;
  color: var(--muted);
}

.link-btn {
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: var(--link);
  cursor: pointer;
}
.link-btn:hover, .link-btn:focus-visible { color: var(--link-hover); }

.bibtex {
  position: relative;
  margin-top: 10px;
}

.bibtex pre {
  margin: 0;
  padding: 12px 14px;
  overflow-x: auto;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.78rem;
  line-height: 1.5;
}

.copy-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--muted);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}
.copy-btn:hover { color: var(--text); }

.footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  text-align: right;
}

/* ---------- Mobile ---------- */

@media (max-width: 640px) {
  .container { padding: 32px 16px 32px; }

  .intro {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 32px;
  }
  .intro-photo {
    order: -1;
    width: 160px;
    margin: 0 auto;
  }
  .name { font-size: 1.8rem; }

  .pub {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .pub-thumb.is-empty { display: none; }
}