/* =========================
   MTE Lab - Dark + Blue Theme
   ========================= */

/* Base */
:root {
  --bg-primary: #0b0f14;
  --bg-secondary: #111821;
  --bg-card: #151d28;
  --text-primary: #e8eef6;
  --text-secondary: #a8b3c2;
  --accent-blue: #2f7cff;
  --accent-blue-hover: #1f66e0;
  --border-color: #1f2a38;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  color: var(--accent-blue-hover);
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.logo a {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.3px;
}

.logo .sub {
  color: var(--text-secondary);
  font-weight: 400;
}

.main-nav {
  display: flex;
  gap: 18px;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 8px;
  border-radius: 6px;
  transition: color 0.2s ease, background 0.2s ease;
}

.main-nav a:hover {
  color: var(--text-primary);
  background: rgba(47, 124, 255, 0.12);
  text-decoration: none;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, rgba(11, 15, 20, 0.9), rgba(17, 24, 33, 0.9)),
              radial-gradient(1200px 600px at 10% -10%, rgba(47, 124, 255, 0.18), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(47, 124, 255, 0.12), transparent 60%);
  border-bottom: 1px solid var(--border-color);
  padding: 100px 0 80px;
}

.hero-inner {
  max-width: 800px;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(47, 124, 255, 0.35);
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
  text-decoration: none;
}

/* Sections */
.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

.section-intro {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 720px;
  margin-bottom: 32px;
}

/* Grid & Cards */
.grid {
  display: grid;
  gap: 20px;
}

.research-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
  border-color: rgba(47, 124, 255, 0.35);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* People */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.person-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}

.person-photo-placeholder {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(47, 124, 255, 0.25), rgba(47, 124, 255, 0.05));
  border: 2px solid rgba(47, 124, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 1.1rem;
}

.person-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.person-role {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.person-info {
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Publications */
.pub-list {
  list-style: none;
  display: grid;
  gap: 14px;
}

.pub-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px 18px;
  display: grid;
  gap: 6px;
  box-shadow: var(--shadow);
}

.pub-year {
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 0.9rem;
}

.pub-title {
  font-weight: 600;
  font-size: 0.98rem;
}

.pub-authors {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.pub-journal {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-style: italic;
}

.pub-links {
  font-size: 0.85rem;
}

.pub-links a {
  margin-right: 10px;
}

.pub-note {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 16px;
}

/* News */
.news-list {
  list-style: none;
  display: grid;
  gap: 12px;
}

.news-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  align-items: baseline;
  box-shadow: var(--shadow);
}

.news-date {
  font-weight: 600;
  color: var(--accent-blue);
  font-size: 0.9rem;
}

.news-text {
  color: var(--text-primary);
  font-size: 0.95rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.contact-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
}

.site-footer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .main-nav {
    flex-wrap: wrap;
    gap: 10px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

/* Publications: expandable yearly lists */
.publication-year {
  margin-top: 14px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
}

.publication-year.active {
  border-color: rgba(47, 124, 255, 0.35);
}

.publication-year-header,
.publication-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 20px;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
  text-align: left;
}

.publication-year-header h3,
.publication-toggle {
  font-size: 1.1rem;
  font-weight: 700;
}

.publication-toggle {
  cursor: pointer;
  transition: background 0.2s ease;
}

.publication-toggle:hover {
  background: rgba(47, 124, 255, 0.10);
}

.publication-count {
  color: var(--accent-blue);
  font-weight: 600;
}

.toggle-icon {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--accent-blue);
  font-size: 1.25rem;
  line-height: 1;
}

.publication-list {
  margin: 0;
  padding: 4px 24px 22px 46px;
  color: var(--text-primary);
}

.publication-list.is-hidden {
  display: none;
}

.publication-list li {
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
}

.publication-list li::marker {
  color: var(--accent-blue);
  font-weight: 700;
}

.pub-authors,
.pub-title,
.pub-journal {
  margin: 0;
}

.pub-authors {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 5px;
}

.pub-title {
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 5px;
}

.pub-title a {
  color: var(--text-primary);
}

.pub-title a:hover {
  color: var(--accent-blue);
}

.pub-journal {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
}

@media (max-width: 768px) {
  .publication-list {
    padding: 4px 16px 18px 34px;
  }

  .publication-year-header,
  .publication-toggle {
    padding: 14px 16px;
  }

  .pub-authors,
  .pub-journal {
    font-size: 0.84rem;
  }

  .pub-title {
    font-size: 0.94rem;
  }
}

/* Expandable publication years */
.publication-year {
  margin-top: 14px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
}

.publication-year.active {
  border-color: rgba(47, 124, 255, 0.35);
}

.publication-year-header {
  padding: 17px 20px;
}

.publication-year-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
}

.publication-year details {
  width: 100%;
}

.publication-year summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 20px;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.publication-year summary::-webkit-details-marker {
  display: none;
}

.publication-year summary:hover {
  background: rgba(47, 124, 255, 0.10);
}

.publication-count {
  color: var(--accent-blue);
  font-weight: 600;
}

.toggle-icon {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--accent-blue);
  font-size: 1.25rem;
  line-height: 1;
}

.publication-list {
  margin: 0;
  padding: 4px 24px 22px 46px;
  color: var(--text-primary);
}

.publication-list li {
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
}

.publication-list li::marker {
  color: var(--accent-blue);
  font-weight: 700;
}

.pub-authors,
.pub-title,
.pub-journal {
  margin: 0;
}

.pub-authors {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 5px;
}

.pub-title {
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 5px;
}

.pub-title a {
  color: var(--text-primary);
}

.pub-title a:hover {
  color: var(--accent-blue);
}

.pub-journal {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
}

.publication-older-note {
  color: var(--text-secondary);
  padding: 6px 20px 20px;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .publication-list {
    padding: 4px 16px 18px 34px;
  }

  .publication-year-header,
  .publication-year summary {
    padding: 14px 16px;
  }

  .pub-authors,
  .pub-journal {
    font-size: 0.84rem;
  }

  .pub-title {
    font-size: 0.94rem;
  }
}

/* Research images: preserve original aspect ratio */
.research-card {
  padding: 0;
  overflow: visible;
}

.research-image-wrap {
  width: 100%;
  overflow: visible;
  background: #0b0f14;
  border-bottom: 1px solid var(--border-color);
}

.research-image {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: none;
  object-fit: initial;
  object-position: initial;
  aspect-ratio: auto;
}


.publication-subtitle {
  margin: 44px 0 16px;
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 700;
}

.selected-publications {
  margin-top: 10px;
}

.selected-publication-list {
  background: rgba(47, 124, 255, 0.05);
  border: 1px solid rgba(47, 124, 255, 0.25);
  border-radius: 12px;
  padding-top: 4px;
}

.all-publications {
  margin-top: 48px;
}

/* Hero title: responsive wrapping */
.lab-title {
  max-width: 100%;
  margin-bottom: 16px;
  font-size: clamp(1.6rem, 4.8vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  white-space: normal;
  overflow-wrap: normal;
  word-break: normal;
}

@media (max-width: 768px) {
  .lab-title {
    font-size: clamp(1.55rem, 7vw, 2rem);
    line-height: 1.25;
    letter-spacing: -0.03em;
  }
}

/* Selected publications: no numbering */
.selected-publication-list {
  display: block;
  margin: 0;
  padding: 4px 24px 8px;
}

.selected-publication-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--border-color);
}

.selected-publication-item:last-child {
  border-bottom: 0;
}

/* All publications main toggle */
.all-publications {
  margin-top: 48px;
  border: 1px solid rgba(47, 124, 255, 0.35);
  border-radius: 12px;
  background: var(--bg-card);
  overflow: hidden;
}

.all-publications-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 19px 20px;
  color: var(--text-primary);
  background: rgba(47, 124, 255, 0.08);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.all-publications-toggle::-webkit-details-marker {
  display: none;
}

.all-publications-toggle:hover {
  background: rgba(47, 124, 255, 0.15);
}

.all-publications-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(47, 124, 255, 0.45);
  border-radius: 50%;
  color: var(--accent-blue);
  font-size: 1.35rem;
  line-height: 1;
}

.all-publications[open] .all-publications-icon {
  font-size: 0;
}

.all-publications[open] .all-publications-icon::after {
  content: "−";
  font-size: 1.35rem;
}

.all-publications-content {
  padding: 8px 14px 14px;
}

.all-publications-content .publication-year {
  margin-top: 12px;
}

@media (max-width: 768px) {
  .all-publications-toggle {
    padding: 16px;
    font-size: 1.05rem;
  }

  .all-publications-content {
    padding: 8px 10px 10px;
  }
}

/* PI profile links */
.profile-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.profile-link:hover {
  color: var(--text-primary);
  border-color: rgba(47, 124, 255, 0.55);
  background: rgba(47, 124, 255, 0.12);
  text-decoration: none;
}

/* People profile photos */
.person-photo {
  display: block;
  width: 118px;
  height: 118px;
  margin: 0 auto 14px;
  border: 2px solid rgba(47, 124, 255, 0.42);
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  background: var(--bg-secondary);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}

.person-card:hover .person-photo {
  border-color: var(--accent-blue);
}

@media (max-width: 768px) {
  .person-photo {
    width: 105px;
    height: 105px;
  }
}
.scholar-icon,
.linkedin-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
}

.scholar-icon {
  background: #4285f4;
  font-family: Georgia, serif;
}

.linkedin-icon {
  background: #0a66c2;
  border-radius: 3px;
  font-family: Arial, sans-serif;
}

/* Interactive research keyword map */
.keyword-section {
  margin-top: 56px;
}

.keyword-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.keyword-section-header h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.keyword-section-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: right;
}

.keyword-map {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 18px;
  min-height: 330px;
  padding: 34px 28px;
  overflow: hidden;
  border: 1px solid rgba(47, 124, 255, 0.25);
  border-radius: 16px;
  background:
    radial-gradient(circle at 20% 20%, rgba(47, 124, 255, 0.12), transparent 36%),
    radial-gradient(circle at 85% 75%, rgba(47, 124, 255, 0.08), transparent 34%),
    var(--bg-card);
}

.keyword {
  position: relative;
  z-index: 1;
  border: 0;
  border-radius: 999px;
  padding: 5px 8px;
  color: var(--text-secondary);
  background: transparent;
  font-family: inherit;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition:
    color 0.25s ease,
    opacity 0.25s ease,
    transform 0.25s ease,
    text-shadow 0.25s ease;
  animation: keywordFloat 5s ease-in-out infinite;
}

.keyword:hover,
.keyword:focus-visible {
  color: #ffffff;
  outline: none;
  transform: translateY(-3px) scale(1.04);
  text-shadow: 0 0 16px rgba(47, 124, 255, 0.9);
}

.keyword-xl {
  color: #dceaff;
  font-size: clamp(1.55rem, 3.2vw, 2.4rem);
  font-weight: 700;
}

.keyword-lg {
  color: #bdd5ff;
  font-size: clamp(1.2rem, 2.3vw, 1.65rem);
}

.keyword-md {
  font-size: clamp(1rem, 1.7vw, 1.22rem);
}

.keyword-sm {
  color: #8f9bac;
  font-size: clamp(0.82rem, 1.35vw, 1rem);
  font-weight: 500;
}

.keyword:nth-child(2n) {
  animation-delay: -1.2s;
}

.keyword:nth-child(3n) {
  animation-delay: -2.6s;
}

.keyword:nth-child(5n) {
  animation-delay: -3.4s;
}

.keyword-map.is-filtered .keyword {
  opacity: 0.2;
  filter: grayscale(0.3);
  transform: scale(0.92);
}

.keyword-map.is-filtered .keyword.is-active,
.keyword-map.is-filtered .keyword.is-related {
  opacity: 1;
  filter: none;
  color: #ffffff;
  transform: scale(1.06);
  text-shadow: 0 0 18px rgba(47, 124, 255, 0.95);
}

.keyword-map.is-filtered .keyword.is-active {
  color: #7fb2ff;
  text-shadow: 0 0 22px rgba(47, 124, 255, 1);
}

.keyword-reset {
  display: none;
  margin: 14px auto 0;
  padding: 8px 13px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  background: transparent;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.keyword-reset:hover {
  color: var(--text-primary);
  border-color: rgba(47, 124, 255, 0.55);
  background: rgba(47, 124, 255, 0.1);
}

.keyword-reset.is-visible {
  display: block;
}

@keyframes keywordFloat {
  0%, 100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-5px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .keyword {
    animation: none;
  }
}

@media (max-width: 768px) {
  .keyword-section-header {
    display: block;
  }

  .keyword-section-header p {
    margin-top: 4px;
    text-align: left;
  }

  .keyword-map {
    min-height: 260px;
    gap: 8px 10px;
    padding: 24px 14px;
  }

  .keyword-xl {
    font-size: 1.45rem;
  }

  .keyword-lg {
    font-size: 1.15rem;
  }

  .keyword-md {
    font-size: 0.95rem;
  }

  .keyword-sm {
    font-size: 0.8rem;
  }
}

/* Expandable alumni panel */
.alumni-panel {
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-card);
}

.alumni-panel summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 20px;
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.alumni-panel summary::-webkit-details-marker {
  display: none;
}

.alumni-panel summary:hover {
  background: rgba(47, 124, 255, 0.10);
}

.alumni-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--accent-blue);
  font-size: 1.25rem;
  line-height: 1;
}

.alumni-panel[open] .alumni-toggle-icon {
  font-size: 0;
}

.alumni-panel[open] .alumni-toggle-icon::after {
  content: "−";
  font-size: 1.25rem;
}

.alumni-content {
  padding: 2px 20px 20px;
  border-top: 1px solid var(--border-color);
}

.alumni-content h4 {
  margin: 18px 0 8px;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
}

.alumni-content ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .alumni-panel summary {
    padding: 14px 16px;
    font-size: 1.1rem;
  }

  .alumni-content {
    padding: 2px 16px 16px;
  }
}

/* Hover cover preview for selected publications */

.cover-publication {
  position: relative;
}

.cover-preview {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 2000;

  width: min(360px, 38vw);
  max-height: 75vh;
  object-fit: contain;

  padding: 8px;
  border: 1px solid rgba(47, 124, 255, 0.45);
  border-radius: 12px;
  background: var(--bg-card);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);

  opacity: 0;
  visibility: hidden;
  /* pointer-events: none; ← 이 줄을 삭제 */
  transform: translate(-50%, -46%) scale(0.96);

  transition:
    opacity 0.2s ease,
    visibility 0.2s ease,
    transform 0.2s ease;
}

/* Desktop hover */
.cover-publication:hover .cover-preview,
.cover-publication:focus-within .cover-preview {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translate(-50%, -50%) scale(1) !important;
}

/* Mobile touch active state */
.cover-publication.is-active .cover-preview {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

@media (max-width: 768px) {
  .cover-preview {
    width: min(300px, 78vw);
    max-height: 65vh;
  }

  /* 모바일에서는 hover 대신 터치로만 작동 */
  .cover-publication:hover .cover-preview {
    opacity: 0;
    visibility: hidden;
  }
}

/* 연도별 논문 목록에서도 cover preview 작동 */
.publication-list li.cover-publication {
  position: relative;
}

.publication-list li.cover-publication .cover-preview {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 2000;

  width: min(360px, 38vw);
  max-height: 75vh;
  object-fit: contain;

  padding: 8px;
  border: 1px solid rgba(47, 124, 255, 0.45);
  border-radius: 12px;
  background: var(--bg-card);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);

  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -46%) scale(0.96);

  transition:
    opacity 0.2s ease,
    visibility 0.2s ease,
    transform 0.2s ease;
}

.publication-list li.cover-publication:hover .cover-preview {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translate(-50%, -50%) scale(1) !important;
}

@media (max-width: 768px) {
  .publication-list li.cover-publication .cover-preview {
    width: min(300px, 78vw);
    max-height: 65vh;
  }
}

/* 모바일에서는 cover preview 완전히 비활성화 */
@media (max-width: 768px) {
  .cover-preview {
    display: none !important;
  }
}

/* Recent News List (like Selected Publications) */
.recent-news-list {
  background: rgba(47, 124, 255, 0.05);
  border: 1px solid rgba(47, 124, 255, 0.25);
  border-radius: 12px;
  padding: 4px 0 8px;
  margin-bottom: 32px;
  overflow: hidden;
}

.recent-news-item {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  align-items: baseline;
   transition: background 0.2s ease, opacity 0.35s ease, transform 0.35s ease;
}

.recent-news-item:last-child {
  border-bottom: 0;
}

.recent-news-item:hover {
  background: rgba(47, 124, 255, 0.08);
}

.recent-news-date {
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 0.88rem;
  white-space: nowrap;
}

.recent-news-text {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* All News expandable */
.all-news {
  margin-top: 48px;
  border: 1px solid rgba(47, 124, 255, 0.35);
  border-radius: 12px;
  background: var(--bg-card);
  overflow: hidden;
}

.all-news-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 19px 20px;
  color: var(--text-primary);
  background: rgba(47, 124, 255, 0.08);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.all-news-toggle::-webkit-details-marker {
  display: none;
}

.all-news-toggle:hover {
  background: rgba(47, 124, 255, 0.15);
}

.all-news-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(47, 124, 255, 0.45);
  border-radius: 50%;
  color: var(--accent-blue);
  font-size: 1.35rem;
  line-height: 1;
}

.all-news[open] .all-news-icon {
  font-size: 0;
}

.all-news[open] .all-news-icon::after {
  content: "−";
  font-size: 1.35rem;
}

.all-news-content {
  padding: 8px 14px 14px;
}

.all-news-content .news-year {
  margin-top: 12px;
}

.news-year {
  margin-top: 14px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
}

.news-year summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 20px;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.news-year summary::-webkit-details-marker {
  display: none;
}

.news-year summary:hover {
  background: rgba(47, 124, 255, 0.10);
}


.news-list {
  margin: 0;
  padding: 4px 24px 22px 46px;
  color: var(--text-primary);
  list-style: none;
}

.news-list li {
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
}

.news-list li:first-child {
  border-top: 0;
}

.news-date {
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.news-text {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .recent-news-item {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 16px 18px;
  }

  .recent-news-date {
    font-size: 0.82rem;
  }

  .recent-news-text {
    font-size: 0.9rem;
  }

  .all-news-toggle {
    padding: 16px;
    font-size: 1.05rem;
  }

  .all-news-content {
    padding: 8px 10px 10px;
  }

  .news-list {
    padding: 4px 16px 18px 34px;
  }

  .news-year summary {
    padding: 14px 16px;
  }
}
/* News cover preview */
.news-list li.news-cover {
  position: relative;
  cursor: pointer;
}

.news-list li.news-cover .cover-preview {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 2000;

  width: min(360px, 38vw);
  max-height: 75vh;
  object-fit: contain;

  padding: 8px;
  border: 1px solid rgba(47, 124, 255, 0.45);
  border-radius: 12px;
  background: var(--bg-card);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);

  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -46%) scale(0.96);

  transition:
    opacity 0.2s ease,
    visibility 0.2s ease,
    transform 0.2s ease;
}

.news-list li.news-cover:hover .cover-preview {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translate(-50%, -50%) scale(1) !important;
}

@media (max-width: 768px) {
  .news-list li.news-cover .cover-preview {
    display: none !important;
  }
}