/* Homepage styles */
:root {
  --bg: #ffffff;
  --bg-alt: #fafafa;
  --panel: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --border: rgba(17, 24, 39, 0.14);
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.06);
  --radius: 12px;
  --accent: #111827;
  --accent-2: #2563eb;
  --max: 920px;
  --pad: 22px;
  --gap: 18px;
  --font:
    ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR",
    "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

:root[data-theme="dark"] {
  --bg: #0b0c0f;
  --bg-alt: #0f1218;
  --panel: #0f1218;
  --text: #eef2ff;
  --muted: #a9b4d0;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --accent: #eef2ff;
  --accent-2: #7aa2ff;
}

:root[data-theme="dark"] .callout {
  background: #1a2233;
  border: 1px solid #2c3a57;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a {
  color: inherit;
}

code {
  font-family: var(--mono);
  background: rgba(122, 162, 255, 0.1);
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
  border-radius: 8px;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: -999px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 10px;
  z-index: 9999;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.brand-dot {
  display: none;
}

.brand-text {
  font-size: 15px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: block;
}

.nav {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 520;
  font-size: 14px;
  padding: 6px 8px;
  border-radius: 10px;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-thickness: 2px;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 12px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.icon-btn:hover {
  border-color: color-mix(in srgb, var(--accent-2) 45%, var(--border));
}

h1,
h2 {
  letter-spacing: -0.03em;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(30px, 3.8vw, 44px);
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 13px;
}

.highlight {
  font-weight: 600;
  color: #2563eb;
}

.hero-simple {
  padding: 34px 0 18px;
}

.hero-simple-inner {
  display: flex;
  align-items: flex-start;
  gap: 22px;
}

.title-tight {
  margin: 0;
  font-size: clamp(34px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-simple .title {
  font-size: 36px;
  font-weight: 600;
}

.subtitle {
  margin: 10px 0 14px;
  color: var(--muted);
  max-width: 64ch;
}

.lede {
  margin: 14px 0 0;
  max-width: 70ch;
}

.hero-signal {
  margin: 0 0 10px;
  color: var(--accent-2);
  font-weight: 650;
  font-size: 14px;
  letter-spacing: 0.01em;
}

.icon-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
}

.icon-link {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  position: relative;
  padding: 0;
}

.icon-link:hover {
  border-color: color-mix(in srgb, var(--accent-2) 45%, var(--border));
}

.icon {
  width: 20px;
  height: 20px;
  display: block;
}

.icon-link.is-copied::after {
  content: "Copied";
  position: absolute;
  top: -34px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 9px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
  box-shadow: var(--shadow);
  white-space: nowrap;
}

.avatar {
  width: 150px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.avatar-inline {
  width: clamp(92px, 10vw, 120px);
  margin: 0;
  flex: 0 0 auto;
}

.avatar-inline .avatar-img,
.avatar-inline .avatar-placeholder {
  border-radius: 999px;
}

.avatar-inline figcaption {
  display: none;
}

.callout {
  margin-top: 14px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: #eef4ff;
  border: 1px solid #dbe7ff;
}

.callout strong {
  color: var(--text);
}

.callout .callout-muted {
  color: var(--muted);
  margin-left: 6px;
}

.news {
  margin-top: 18px;
}

.subhead {
  margin: 0 0 10px;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.news-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.news-list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px;
}

.news-date {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.news-text a {
  color: var(--accent-2);
  text-decoration: none;
}

.news-text a:hover {
  text-decoration: underline;
}

.section {
  padding: 28px 0;
}

.section-compact {
  padding-top: 10px;
}

.section.alt {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-kicker {
  margin: 4px 0 0;
  color: var(--muted);
}

.section-actions {
  margin-top: 18px;
}

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.prose {
  max-width: 70ch;
}

.grid-2,
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.panel-title {
  margin: 0 0 10px;
  font-size: 16px;
}

.bullets {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.bullets li {
  margin: 4px 0;
}

.text-link {
  color: #5b5fc7;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.text-link:hover {
  border-bottom: 1px solid #5b5fc7;
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 18px;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-thumb {
  border: 0;
  padding: 0;
  background: none;
  cursor: pointer;
  display: block;
  width: 100%;
  text-align: inherit;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

.project-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.project-thumb:hover img {
  transform: scale(1.03);
}

.project-title {
  margin: 10px 0 0;
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.project-desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.project-links {
  margin-top: 8px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
  border: 1px solid transparent;
  background: var(--panel);
  color: var(--text);
}

.chip:hover {
  transform: translateY(-1px);
  transition: 0.15s ease;
  border-color: color-mix(in srgb, var(--accent-2) 45%, var(--border));
}

.chip.chip-primary {
  background: #111827;
  color: #ffffff;
  border: 1px solid #111827;
  font-weight: 600;
}

.chip.chip-primary:hover {
  background: #000000;
  border-color: #000000;
}

.chip-blue {
  background: #e8f1ff;
  border: 1px solid #c7dbff;
  color: #1d4ed8;
}

.chip-demo {
  background: #ede9fe;
  border: 1px solid #c4b5fd;
  color: #5b21b6;
}

.chip-bib {
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  color: #4338ca;
}

.tag-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.tag-row-large {
  gap: 12px;
}

.tag {
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12.5px;
  background: transparent;
  font-weight: 500;
}

.tag-row-large .tag {
  font-size: 13px;
  padding: 8px 12px;
}

.pub-filters {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  margin: 10px 0 18px;
}

.filter-btn {
  border: none;
  background: transparent;
  padding: 10px 12px;
  border-radius: 10px;
  font: inherit;
  color: var(--muted);
  cursor: pointer;
}

.filter-btn:hover {
  color: var(--text);
}

.filter-btn.is-active {
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent-2);
  font-weight: 700;
}

.pubs {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
}

.pub {
  padding: 0;
}

.pub-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
}

.pub-row:first-child {
  border-top: none;
}

.pub-left {
  min-width: 0;
}

.pub-title {
  font-weight: 780;
  line-height: 1.25;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.pub-authors {
  margin-top: 6px;
  color: var(--muted);
}

.pub-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.pub-right {
  text-align: right;
  white-space: nowrap;
}

.pub-venue {
  font-weight: 760;
}

.pub-note {
  margin-top: 4px;
  font-size: 0.92rem;
}

.pub-actions .chip {
  color: var(--accent-2);
  border: 1px solid color-mix(in srgb, var(--accent-2) 28%, var(--border));
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
}

.pub-actions .chip:hover {
  border-color: color-mix(in srgb, var(--accent-2) 45%, var(--border));
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
  text-decoration: none;
}

.pub-actions .chip.chip-blue {
  background: #e8f1ff;
  border: 1px solid #c7dbff;
  color: #1d4ed8;
}

.pub-actions .chip.chip-bib {
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  color: #4338ca;
}

.pub-actions .chip.chip-demo {
  background: #ede9fe;
  border: 1px solid #c4b5fd;
  color: #5b21b6;
}

.pub-row[hidden],
#pubEmpty[hidden] {
  display: none !important;
}

.pubs-preview {
  margin-top: 18px;
}

.pubs-preview .pub-row:last-child {
  border-bottom: 1px solid var(--border);
}

.page-hero {
  padding-bottom: 8px;
}

.publications-hero {
  max-width: 760px;
}

.eyebrow-home {
  margin: 0 0 8px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.publications-intro {
  max-width: 62ch;
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 18px;
}

.skill-group {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.skill-group::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-2);
  opacity: 0.8;
}

.skill-group h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--text);
}

.skill-group strong {
  color: var(--accent-2);
  font-weight: 600;
}

.skill-group p {
  margin: 0 0 10px;
  color: var(--muted);
  line-height: 1.7;
}

.skill-group p:last-child {
  margin-bottom: 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 22px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.lightbox[hidden] {
  display: none;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
}

.lightbox-figure {
  position: relative;
  margin: 0;
  width: min(1100px, calc(100% - 32px));
  height: min(85vh, 820px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  overflow: hidden;
}

.lightbox-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: rgba(0, 0, 0, 0.25);
}

.lightbox-close {
  position: absolute;
  top: 10px;
  right: 10px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  cursor: pointer;
}

@media (min-width: 820px) {
  .nav {
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
  }
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .project-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1040px) {
  .skills-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .avatar {
    margin-inline: auto;
  }
}

@media (max-width: 760px) {
  .hero-simple-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .subtitle,
  .lede {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-signal {
    text-align: center;
  }

  .news-list li {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .pub-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .pub-right {
    text-align: left;
    white-space: normal;
  }
}

@media (min-width: 720px) {
  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media print {
  .site-header {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section.alt {
    background: transparent;
    border: none;
  }

  .panel,
  .avatar {
    box-shadow: none;
  }
}
/* =========================
   Resume / CV page
   ========================= */

.cv-page-section {
  padding-top: 56px;
  padding-bottom: 72px;
}

.cv-page-container {
  max-width: 880px;
}

.cv-page-header {
  max-width: 700px;
  margin-bottom: 30px;
}

.cv-page-title {
  margin: 0;
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.cv-page-intro {
  margin: 14px 0 0;
  max-width: 44rem;
  font-size: 18px;
  line-height: 1.6;
  color: var(--muted);
}

.cv-download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 28px;
}

.cv-download-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--panel);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow);
}

.cv-card-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 700;
}

.cv-card-title {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.cv-card-text {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.cv-download-btn {
  margin-top: 18px;
  width: fit-content;
}

.cv-page-note {
  margin-top: 22px;
}

@media (max-width: 760px) {
  .cv-download-grid {
    grid-template-columns: 1fr;
  }

  .cv-page-section {
    padding-top: 38px;
    padding-bottom: 56px;
  }
}

/* Minimal CV page */

.cv-minimal {
  padding-top: 64px;
  padding-bottom: 80px;
}

.cv-minimal-container {
  max-width: 640px;
}

.cv-title {
  font-size: clamp(36px, 5vw, 56px);
  margin: 8px 0 24px;
  letter-spacing: -0.04em;
}

.cv-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}