/* Daehyun Choi — Personal website */

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  color: #111;
  padding-top: 65px;
  background: #fff;
}

/* ─── Navbar ─────────────────────────── */
.navbar-dc {
  background-color: #1a2f6b;
  border: none;
  box-shadow: 0 1px 5px rgba(0,0,0,0.28);
}

.navbar-dc .navbar-brand {
  color: #e8eeff;
  font-weight: 600;
  font-size: 14px;
  padding: 16px 15px;
}

.navbar-dc .navbar-brand:hover { color: #fff; }

.navbar-dc .nav > li > a {
  color: rgba(232,238,255,0.88);
  font-size: 13.5px;
  padding: 20px 14px;
}

.navbar-dc .nav > li > a:hover,
.navbar-dc .nav > li > a:focus {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.navbar-dc .navbar-toggle { border-color: rgba(255,255,255,0.3); margin-top: 11px; }
.navbar-dc .navbar-toggle .icon-bar { background-color: rgba(255,255,255,0.8); }

.dc-avatar-wrap {
  display: none;
}

.dc-avatar-wrap a { display: block; width: 100%; height: 100%; }

.dc-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

@media (max-width: 767px) {
  .dc-avatar-wrap { display: none; }
  .navbar-dc .navbar-brand { font-size: 12.5px; }
}

/* ─── Layout ──────────────────────────── */
.dc-main {
  padding-top: 2.5em;
  padding-bottom: 2em;
}

/* ─── Bio ─────────────────────────────── */
.dc-bio-header {
  display: flex !important;
  flex-direction: row !important;
  gap: 2.2em;
  align-items: flex-start;
  margin-bottom: 1.8em;
}

.dc-bio-photo {
  width: 175px;
  height: 175px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 18%;
  flex: 0 0 175px;
  background-color: #fff;
  box-shadow: 0 1px 6px rgba(0,0,0,0.08);
}

.dc-bio-header-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.55em;
  min-height: 175px;
}

.dc-identity {
  font-size: 0.8em;
  color: #111;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 500;
  margin: 0;
  line-height: 1.6;
}

.dc-badges {
  margin: 0;
  line-height: 2;
}

.dc-bio-body { }

.dc-bio-body p { font-size: 1em; color: #111; margin-bottom: 1em; }

@media (max-width: 480px) {
  .dc-bio-header { flex-direction: column !important; align-items: center; }
  .dc-bio-photo { width: 130px; height: 130px; flex: 0 0 130px; }
  .dc-bio-header-text { min-height: auto; align-items: center; text-align: center; gap: 0.4em; }
  .dc-identity { text-align: center; }
}

.dc-name {
  font-size: 2.4em;
  font-weight: 700;
  color: #111;
  margin: 0 0 0.1em 0;
  letter-spacing: -0.5px;
}

.dc-position {
  font-size: 1.05em;
  color: #111;
  margin: 0;
}

#bio .dc-bio-body p { font-size: 1em; color: #333; margin-bottom: 1em; }

details {
  background: #f7f9fc;
  border: 1px solid #dde4f0;
  border-radius: 5px;
  padding: 1em 1.3em;
  margin-top: 1.3em;
}

details summary {
  cursor: pointer;
  color: #1a2f6b;
  font-size: 1em;
  outline: none;
}

details summary:hover { color: #2a4fa0; }

details[open] summary {
  margin-bottom: 0.8em;
}

.dc-ri-heading {
  font-size: 0.88em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #111;
  margin: 1.2em 0 0.5em 0;
}

.dc-interests {
  margin: 0;
  padding-left: 1.4em;
  font-size: 0.95em;
  color: #333;
}

.dc-interests li { margin-bottom: 0.35em; }

/* ─── Divider ─────────────────────────── */
.dc-hr { margin: 2.2em 0; border-color: #e8ecf3; }

/* ─── Section titles ──────────────────── */
.dc-section-title {
  font-size: 1.55em;
  font-weight: 700;
  color: #1a2f6b;
  margin: 0 0 1.4em 0;
  padding-bottom: 0.4em;
  border-bottom: 2px solid #e4e9f5;
}

/* ─── News ────────────────────────────── */
.dc-news .list-group-item {
  font-size: 0.95em;
  padding: 8px 15px;
  border-left: 3px solid #1a2f6b;
  border-top: 1px solid #edf0f7;
  border-right: 1px solid #edf0f7;
  border-bottom: 1px solid #edf0f7;
  border-radius: 0 !important;
  background: #fafbfd;
  margin-bottom: 3px;
}

.dc-news-date {
  font-weight: 600;
  color: #1a2f6b;
  margin-right: 6px;
  white-space: nowrap;
}

.dc-news-toggle {
  margin-top: 8px;
  font-size: 12px;
  color: #555;
  border-color: #ccc;
  background: #f7f9fc;
}

.dc-news-toggle:hover {
  background: #edf0f7;
  color: #1a2f6b;
  border-color: #b0bcd8;
}

/* ─── Page header ────────────────────── */
.dc-page-header {
  background: linear-gradient(135deg, #1a2f6b 0%, #0d1c4a 100%);
  color: #fff;
  padding: 3em 0 2.2em;
  margin-bottom: 0;
}

.dc-page-header h1 {
  font-size: 2.2em;
  font-weight: 700;
  color: #fff;
  margin: 0 0 0.2em 0;
  letter-spacing: -0.5px;
}

.dc-page-subtitle {
  font-size: 1em;
  color: rgba(255,255,255,0.75);
  margin: 0;
}

.dc-page-subtitle a { color: rgba(255,255,255,0.85); text-decoration: underline; }
.dc-page-subtitle a:hover { color: #fff; }

/* ─── Subsection headings ─────────────── */
.dc-subsection {
  font-size: 1.15em;
  font-weight: 700;
  color: #444;
  margin: 2.2em 0 1.3em 0;
  padding-bottom: 0.35em;
  border-bottom: 1px solid #e8ecf3;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── Project wrap (images left of blue border) ─ */
.dc-proj-wrap {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.1em;
}

.dc-proj-images {
  flex-shrink: 0;
  width: 220px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-right: 1em;
}

.dc-proj-images img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  border-radius: 2px;
}

.dc-proj-wrap .dc-proj-card {
  margin-bottom: 0;
  flex: 1;
}

@media (max-width: 600px) {
  .dc-proj-wrap { flex-direction: column; }
  .dc-proj-images { width: 100%; margin-right: 0; margin-bottom: 0.6em;
                    grid-auto-rows: 100px; }
}

.dc-proj-funder-logo {
  height: 18px;
  vertical-align: middle;
  margin-left: 0.5em;
  opacity: 0.8;
  filter: grayscale(20%);
}

/* ─── Project cards ───────────────────── */
.dc-proj-card {
  background: #fafbfd;
  border: 1px solid #dde4f0;
  border-left: 4px solid #1a2f6b;
  border-radius: 0 5px 5px 0;
  padding: 1.1em 1.2em;
  margin-bottom: 1.1em;
  transition: box-shadow 0.2s;
}

.dc-proj-card:hover {
  box-shadow: 0 2px 10px rgba(26,47,107,0.1);
}

.dc-proj-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.4em;
  margin-bottom: 0.6em;
}

.dc-proj-title {
  font-size: 1em;
  font-weight: 700;
  color: #1a2f6b;
  margin: 0 0 0.2em 0;
}

.dc-proj-support {
  font-size: 1em;
  color: #555;
  margin: 0;
}

.dc-proj-date {
  font-size: 1em;
  color: #888;
  white-space: nowrap;
  margin-top: 0.1em;
}

.dc-proj-desc {
  font-size: 1em;
  color: #333;
  margin-bottom: 0.5em;
  line-height: 1.6;
}

.dc-proj-kw {
  font-size: 1em;
  color: #555;
  margin-bottom: 0.4em;
}

.dc-proj-video {
  width: 100%;
  max-width: 100%;
  border-radius: 4px;
  margin: 0.8em 0;
  display: block;
  background: #000;
}

/* ─── Open Source cards ───────────────── */
.dc-os-card {
  background: #fff;
  border: 1px solid #dde4f0;
  border-radius: 6px;
  padding: 1.3em 1.4em;
  margin-bottom: 1.5em;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  transition: box-shadow 0.2s;
}

.dc-os-card:hover {
  box-shadow: 0 3px 12px rgba(26,47,107,0.1);
}

.dc-os-card-wip {
  border-style: dashed;
  background: #fafbfd;
  opacity: 0.85;
}

.dc-os-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5em;
  margin-bottom: 0.75em;
}

.dc-os-title {
  font-size: 1.1em;
  font-weight: 700;
  color: #1a2f6b;
  margin: 0 0 0.3em 0;
}

.dc-os-title a { color: #1a2f6b; text-decoration: none; }
.dc-os-title a:hover { text-decoration: underline; }

.dc-os-meta { margin: 0; }

.dc-os-tag {
  display: inline-block;
  font-size: 0.75em;
  background: #edf0f9;
  color: #1a2f6b;
  border: 1px solid #c8d0e8;
  border-radius: 3px;
  padding: 1px 6px;
  margin-right: 3px;
  margin-bottom: 2px;
}

.dc-os-btn {
  margin-top: 0.2em;
  white-space: nowrap;
}

.dc-os-wip-badge {
  display: inline-block;
  font-size: 0.72em;
  font-weight: 600;
  background: #e8a020;
  color: #fff;
  border-radius: 3px;
  padding: 1px 6px;
  margin-left: 6px;
  vertical-align: middle;
}

.dc-os-desc {
  font-size: 0.97em;
  color: #444;
  line-height: 1.6;
  margin-bottom: 0.6em;
}

.dc-os-pub {
  font-size: 0.86em;
  color: #555;
  margin-bottom: 0.8em;
}

.dc-os-pub a { color: #1a2f6b; }

.dc-os-posts {
  background: #f5f7fc;
  border: 1px dashed #c8d0e8;
  border-radius: 4px;
  padding: 0.6em 0.9em;
  margin-top: 0.8em;
}

.dc-os-posts-title {
  font-size: 0.82em;
  font-weight: 700;
  color: #1a2f6b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.3em 0;
}

.dc-os-posts-placeholder {
  font-size: 0.85em;
  color: #888;
  margin: 0;
}

/* ─── Research cards ─────────────────── */
.dc-research-card {
  display: block;
  border: 1px solid #dde4f0;
  border-radius: 5px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.dc-research-card:hover {
  box-shadow: 0 3px 12px rgba(26,47,107,0.15);
  border-color: #1a2f6b;
  text-decoration: none;
  color: inherit;
}

.dc-research-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

.dc-research-caption {
  padding: 0.75em 0.9em 0.85em;
  background: #fafbfd;
}

.dc-research-caption strong {
  font-size: 0.95em;
  color: #1a2f6b;
  display: block;
  margin-bottom: 0.3em;
}

.dc-research-caption p {
  font-size: 0.85em;
  color: #555;
  margin: 0;
  line-height: 1.5;
}

/* ─── Publications ────────────────────── */
.dc-pub-note { font-size: 0.94em; color: #666; margin-bottom: 1.2em; }

.dc-pub-cat {
  font-size: 1.05em;
  font-weight: 700;
  color: #111;
  margin: 1.8em 0 0.8em 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid #e4e9f5;
  padding-bottom: 0.3em;
}

.dc-publist { list-style: none; padding: 0; margin: 0; }

.dc-publist > li {
  display: flex !important;
  flex-direction: row !important;
  gap: 1.1em;
  align-items: flex-start;
  font-size: 0.97em;
  line-height: 1.6;
  margin-bottom: 1.1em;
  padding-bottom: 1.1em;
  border-bottom: 1px solid #eef0f5;
}

.dc-publist > li:last-child { border-bottom: none; }

.dc-pub-img {
  width: 240px;
  height: 180px;
  object-fit: cover;
  flex-shrink: 0;
  border-radius: 3px;
  display: block;
  background: #f0f2f7;
}

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

.dc-award-badge {
  display: inline-block;
  font-size: 0.82em;
  font-weight: 600;
  color: #b8860b;
  background: #fffbe6;
  border: 1px solid #f0d060;
  border-radius: 3px;
  padding: 1px 7px;
  margin: 3px 0 3px 0;
}

@media (max-width: 600px) {
  .dc-publist > li { flex-direction: column !important; }
  .dc-pub-img { width: 100%; height: 180px; }
}

.dc-btn {
  display: inline-block;
  margin-left: 4px;
  font-size: 1em;
  color: #1a2f6b;
  text-decoration: none;
}

.dc-btn:hover { text-decoration: underline; color: #1a2f6b; }

/* ─── About ────────────────────────────── */
#about h4 {
  font-size: 0.95em;
  font-weight: 700;
  color: #444;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1.6em 0 0.8em 0;
}

.dc-about-list { list-style: none; padding: 0; margin: 0; }

.dc-about-list > li {
  font-size: 0.97em;
  padding: 0.55em 0;
  border-bottom: 1px solid #f0f2f7;
  line-height: 1.6;
}

#about p { font-size: 0.97em; color: #444; line-height: 1.65; }

/* ─── Footer ──────────────────────────── */
.dc-footer {
  background: #f5f7fc;
  border-top: 1px solid #dde4f0;
  padding: 1.5em 0;
  text-align: center;
  font-size: 0.85em;
  color: #888;
}

.dc-footer a { color: #1a2f6b; }

.dc-footer-email {
  font-size: 0.95em;
  color: #555;
  margin-bottom: 0.3em;
}

.dc-footer-email a {
  color: #1a2f6b;
  font-weight: 500;
}