/* =========================================================================
   DNS & ISPL — refined academic editorial theme
   Layered on top of the Quarto theme. Safe to extend.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Spline+Sans:wght@400;500;600&display=swap');

:root {
  --ink:        #16243d;   /* deep navy — primary text/headings */
  --ink-soft:   #3c4a63;
  --accent:     #0f766e;   /* teal — links & accents */
  --accent-dk:  #0b5752;
  --rule:       rgba(22, 36, 61, .10);
  --paper:      #ffffff;
  --paper-2:    #f7f8fa;   /* subtle card tint */
  --serif:      "Fraunces", Georgia, "Times New Roman", serif;
  --sans:       "Spline Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ---- Base typography ---- */
body {
  font-family: var(--sans);
  color: var(--ink-soft);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, .navbar-brand {
  font-family: var(--serif);
  color: var(--ink);
  letter-spacing: -0.01em;
}
h1 { font-weight: 600; }
h2 { font-weight: 600; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-dk); }

/* Section headings get a short accent rule */
.content h2 {
  margin-top: 2.25rem;
  padding-bottom: .35rem;
  border-bottom: 2px solid var(--rule);
}

/* ---- Navbar ---- */
.navbar { box-shadow: 0 2px 14px rgba(22,36,61,.06); }
.navbar-brand { font-weight: 700; letter-spacing: .2px; }

/* =========================================================================
   Home profile area
   ========================================================================= */
.profile-container {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  align-items: center;
  margin-block: 1.5rem 2rem;
}
.profile-image img {
  width: 200px;
  height: 200px;
  border-radius: 9999px;
  object-fit: cover;
  box-shadow: 0 12px 30px rgba(22,36,61,.18);
  border: 4px solid #fff;
}
.profile-content {
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--ink-soft);
}
.profile-content strong { color: var(--ink); }

/* ---- Social links / buttons ---- */
.social-links {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin: .5rem 0 1.25rem;
}
.social-button {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem .9rem;
  border-radius: .7rem;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink);
  font-weight: 500;
  font-size: .92rem;
  text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.social-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(22,36,61,.12);
  border-color: var(--accent);
  color: var(--accent-dk);
}

/* ---- Divider ---- */
.divider { height: 1px; background: var(--rule); margin: 1.25rem 0; }

/* ---- Bio / Lab containers ---- */
.bio-container, .lab-container { display: grid; gap: 1rem; }
.quote-section {
  border-left: 3px solid var(--accent);
  padding: .35rem 0 .35rem 1rem;
  color: var(--ink);
  font-size: 1.08rem;
}

/* =========================================================================
   Publications
   ========================================================================= */
.pub-wrap { margin-top: .5rem; }

.pub-summary {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: .25rem 0 1.75rem;
}
.pub-stat {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: .6rem;
  padding: .45rem .8rem;
  font-size: .9rem;
  color: var(--ink-soft);
}
.pub-stat strong { color: var(--accent-dk); font-size: 1.05rem; }

.pub-list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  counter-reset: pub;
}
.pub-item {
  counter-increment: pub;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: .85rem;
  padding: .85rem 0 .85rem .25rem;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
.pub-item:hover { background: linear-gradient(90deg, rgba(15,118,110,.04), transparent 70%); }
.pub-item::before {
  content: counter(pub);
  grid-column: 1 / 2;
  grid-row: 1;
  align-self: start;
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  font-size: .95rem;
  opacity: .45;
  padding-top: .15rem;
}
/* place badge under the number, citation on the right */
.pub-badge {
  grid-column: 1 / 2;
  grid-row: 1;
  align-self: start;
  margin-top: 1.5rem;            /* push below the counter */
  justify-self: start;
  display: inline-block;
  font-family: var(--sans);
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .16rem .42rem;
  border-radius: .35rem;
  white-space: nowrap;
}
.pub-cite {
  grid-column: 2 / 3;
  grid-row: 1;
  font-size: .96rem;
  line-height: 1.6;
  color: var(--ink-soft);
}
.pub-cite i { color: var(--ink); }
.pub-cite a { word-break: break-word; font-size: .9rem; }
.pub-me { font-weight: 700; color: var(--ink); }

/* badge palette */
.b-ssci   { background: #e7edf7; color: #1d3a73; }
.b-sci    { background: #e2f1ef; color: #0b5752; }
.b-scopus { background: #fbeede; color: #92500a; }
.b-kci    { background: #eef0f3; color: #475569; }

/* =========================================================================
   Lab page tweaks
   ========================================================================= */
.lab-container .profile-image img,
.profile-image img.lab-logo { border-radius: 1rem; }

/* =========================================================================
   Tables / TOC overflow
   ========================================================================= */
.table-responsive { overflow-x: auto; }

/* =========================================================================
   Mobile
   ========================================================================= */
@media (max-width: 720px) {
  .profile-container { grid-template-columns: 1fr; text-align: center; gap: 1rem; }
  .profile-image img { margin-inline: auto; width: 160px; height: 160px; }
  .pub-item { grid-template-columns: 52px 1fr; gap: .6rem; }
  .pub-badge { font-size: .56rem; }
}

/* =========================================================================
   Courses
   ========================================================================= */
.course-info {
  display: block;
  background: var(--paper-2);
  border-left: 3px solid var(--accent);
  border-radius: 0 .5rem .5rem 0;
  padding: .7rem 1rem;
  margin: .25rem 0 1.5rem;
  font-size: .95rem;
  color: var(--ink-soft);
}
.course-info strong { color: var(--ink); }

/* Course list grid */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1rem 0 2rem;
}
.course-card {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--rule);
  border-radius: .9rem;
  background: var(--paper);
  text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(22,36,61,.12);
  border-color: var(--accent);
}
.course-tag {
  align-self: flex-start;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .03em;
  padding: .16rem .5rem;
  border-radius: .4rem;
}
.tag-ug   { background: #e7edf7; color: #1d3a73; }
.tag-grad { background: #e2f1ef; color: #0b5752; }
.course-title-ko {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--ink);
  line-height: 1.3;
}
.course-title-en {
  font-size: .85rem;
  color: var(--ink-soft);
}

/* =========================================================================
   Reports (research.qmd #reports)
   ========================================================================= */
.report-wrap { margin-top: .5rem; }

.report-summary {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: .25rem 0 1.5rem;
}
.report-stat {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: .6rem;
  padding: .45rem .8rem;
  font-size: .9rem;
  color: var(--ink-soft);
}
.report-stat strong { color: var(--accent-dk); font-size: 1.05rem; }

.report-year {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--rule);
}
.report-year:last-of-type { border-bottom: 1px solid var(--rule); }
.report-year-label {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--ink);
  line-height: 1.1;
  position: sticky;
  top: 1rem;
}

.report-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}
.report-item {
  padding: .5rem 0 .5rem .9rem;
  border-left: 2px solid var(--rule);
  transition: border-color .12s ease, background .12s ease;
}
.report-item:hover {
  border-left-color: var(--accent);
  background: linear-gradient(90deg, rgba(15,118,110,.05), transparent 72%);
}
.report-title {
  display: block;
  font-size: .98rem;
  line-height: 1.5;
  color: var(--ink);
  font-weight: 500;
}
.report-meta {
  display: block;
  font-size: .82rem;
  color: var(--ink-soft);
  margin-top: .12rem;
}
.report-org { color: var(--ink); font-weight: 500; }

@media (max-width: 720px) {
  .report-year { grid-template-columns: 1fr; gap: .4rem; }
  .report-year-label { position: static; font-size: 1.2rem; }
}

/* =========================================================================
   Projects (projects.qmd)
   ========================================================================= */
.project-wrap { margin-top: .5rem; }

.project-summary {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: .25rem 0 1.5rem;
}
.project-stat {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: .6rem;
  padding: .45rem .8rem;
  font-size: .9rem;
  color: var(--ink-soft);
}
.project-stat strong { color: var(--accent-dk); font-size: 1.05rem; }

.project-list { display: grid; gap: .9rem; margin: 1rem 0 2rem; }
.project-card {
  border: 1px solid var(--rule);
  border-radius: .9rem;
  padding: 1rem 1.2rem;
  background: var(--paper);
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(22,36,61,.10);
  border-color: var(--accent);
}
.project-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  margin-bottom: .45rem;
}
.project-role {
  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .03em;
  padding: .22rem .55rem;
  border-radius: .4rem;
  white-space: nowrap;
}
.role-pi { background: var(--accent); color: #fff; }              /* 연구책임 */
.role-co { background: var(--paper-2); color: var(--ink-soft); border: 1px solid var(--rule); } /* 연구참여 */
.project-period { font-size: .82rem; color: var(--ink-soft); white-space: nowrap; }
.project-period .now { color: var(--accent-dk); font-weight: 600; }
.project-title {
  font-family: var(--serif);
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
}
.project-org { font-size: .85rem; color: var(--ink-soft); margin-top: .3rem; }

@media (max-width: 720px) {
  .project-head { flex-wrap: wrap; gap: .4rem; }
}