/* ===== CSS Variables & Theming ===== */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #e8e8ed;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-light: rgba(0, 113, 227, 0.08);
  --border: #d2d2d7;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --nav-border: rgba(0, 0, 0, 0.08);
  --gradient-start: #667eea;
  --gradient-end: #764ba2;
  --hero-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --collab-gradient: linear-gradient(135deg, #0c0c1d 0%, #1a1a3e 50%, #2d1b4e 100%);
  --tag-bg: #f0f0f5;
  --tag-text: #1d1d1f;
  --highlight-bg: linear-gradient(135deg, #fdf2e9 0%, #fef9f5 100%);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1c1c1e;
  --bg-tertiary: #2c2c2e;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #86868b;
  --accent: #2997ff;
  --accent-hover: #40a9ff;
  --accent-light: rgba(41, 151, 255, 0.12);
  --border: #38383a;
  --card-bg: #1c1c1e;
  --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.5);
  --nav-bg: rgba(0, 0, 0, 0.85);
  --nav-border: rgba(255, 255, 255, 0.08);
  --hero-gradient: linear-gradient(135deg, #0c0c1d 0%, #1a1a2e 100%);
  --tag-bg: #2c2c2e;
  --tag-text: #f5f5f7;
  --highlight-bg: linear-gradient(135deg, #1a1a2e 0%, #1c1c1e 100%);
}

[v-cloak] { display: none; }

#app {
  opacity: 0;
  transition: opacity 0.8s ease;
}
#app.fade-in {
  opacity: 1;
}

#page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f3f0;
  z-index: 9999;
  transition: opacity 0.3s ease;
}
#page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}
#page-loader img {
  width: 50px;
  max-width: 50px;
  height: auto;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--nav-border);
  transition: background var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 4px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  justify-content: center;
}

.nav-menu a {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
  background: var(--accent-light);
}

.nav-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
}

.btn-icon {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  width: 36px;
  min-width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
}

.btn-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

#langLabel {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(2px);
  transform: scale(1.15);
  animation: heroPan 20s ease-in-out infinite alternate;
}

@keyframes heroPan {
  0%   { transform: scale(1.15) translate(0, 0); }
  25%  { transform: scale(1.2) translate(-2%, -1%); }
  50%  { transform: scale(1.15) translate(1%, 1.5%); }
  75%  { transform: scale(1.2) translate(-1%, 0.5%); }
  100% { transform: scale(1.18) translate(1.5%, -1.5%); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.5) 100%);
}

.hero-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.hero-greeting {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
}

.greeting-icon {
  font-size: 22px;
  display: inline-block;
  animation: wave 2.5s ease-in-out infinite;
  transform-origin: 70% 70%;
}

@keyframes wave {
  0%   { transform: rotate(0deg); }
  10%  { transform: rotate(14deg); }
  20%  { transform: rotate(-8deg); }
  30%  { transform: rotate(14deg); }
  40%  { transform: rotate(-4deg); }
  50%  { transform: rotate(10deg); }
  60%  { transform: rotate(0deg); }
  100% { transform: rotate(0deg); }
}

.hero-name {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 4px;
  color: #ffffff;
}

.hero-name-ja {
  font-size: 20px;
  color: rgba(255,255,255,0.7);
  font-weight: 400;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}

.title-accent {
  color: #ffffff;
  font-weight: 600;
}

.hero-affiliations {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.hero-affiliations span {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-affiliations i {
  width: 18px;
  text-align: center;
  color: #2997ff;
  font-size: 13px;
}

.hero-greeting {
  color: rgba(255,255,255,0.7);
}

.hero-links {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-links a {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.8);
  font-size: 18px;
  border: 1px solid rgba(255,255,255,0.2);
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.hero-links a:hover {
  color: #ffffff;
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
  background: rgba(255,255,255,0.2);
}

.hero-stats {
  display: flex;
  gap: 32px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* Hero removed: photo-placeholder, hero-visual, hero-decoration */

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

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

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
  margin-top: 16px;
}

.section-subtitle a {
  margin-left: 8px;
}

/* ===== News Section ===== */
.news-list {
  margin-top: 24px;
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  min-width: 0;
}

.news-item > p {
  flex: 1;
  min-width: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.news-item:last-child {
  border-bottom: none;
}

.news-date {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  min-width: 80px;
  flex-shrink: 0;
}

.news-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.news-badge.new {
  background: var(--accent);
  color: #fff;
}

.news-item p {
  font-size: 14px;
  color: var(--text-primary);
}

.news-item p a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

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

/* ===== About Section ===== */
.section-about {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.about-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
  filter: blur(2px);
  transform: scale(1.05);
}

.about-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.88) 0%, rgba(255,255,255,0.92) 50%, rgba(255,255,255,0.88) 100%);
}

[data-theme="dark"] .about-overlay {
  background: linear-gradient(135deg, rgba(10,10,20,0.9) 0%, rgba(28,28,30,0.92) 50%, rgba(10,10,20,0.9) 100%);
}

.about-container {
  position: relative;
  z-index: 1;
}

.about-title {
  text-shadow: 0 1px 2px rgba(255,255,255,0.3);
}

[data-theme="dark"] .about-title {
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.about-card {
  margin-top: 24px;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
  padding: 32px;
}

[data-theme="dark"] .about-card {
  background: rgba(28,28,30,0.6);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.about-text {
  margin-bottom: 32px;
}

.about-text p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.research-interests h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.interest-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  background: rgba(255,255,255,0.7);
  color: var(--tag-text);
  border: 1px solid rgba(0,0,0,0.08);
  transition: all var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

[data-theme="dark"] .tag {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,113,227,0.08);
}

/* ===== Publications Section ===== */
.pub-controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.pub-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pub-sort {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.pub-sort-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-right: 4px;
}

.pub-sort-btn {
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

.pub-sort-btn:hover,
.pub-sort-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.pub-filter {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

.pub-filter:hover,
.pub-filter.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pub-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  transition: all var(--transition);
}

.pub-card:hover {
  box-shadow: var(--card-shadow-hover);
  border-color: var(--accent);
}

.pub-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 8px;
}

.pub-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
}

.pub-title-link {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

.pub-citations {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
  padding: 4px 10px;
  background: var(--accent-light);
  border-radius: 8px;
}

.pub-citations i {
  font-size: 11px;
}

.pub-authors {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.6;
}

.pub-authors .me {
  font-weight: 600;
  color: var(--text-primary);
}

.pub-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.pub-venue {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.pub-year {
  font-size: 12px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.pub-type-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pub-type-badge.conference {
  background: rgba(52, 199, 89, 0.12);
  color: #34c759;
}

.pub-type-badge.journal {
  background: rgba(88, 86, 214, 0.12);
  color: #5856d6;
}

.pub-type-badge.workshop {
  background: rgba(255, 149, 0, 0.12);
  color: #ff9500;
}

.pub-type-badge.domestic {
  background: rgba(255, 69, 58, 0.12);
  color: #ff453a;
}

.pub-type-badge.preprint {
  background: rgba(175, 82, 222, 0.12);
  color: #af52de;
}

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

.pub-link {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--tag-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.pub-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.pub-note {
  margin-top: 24px;
  font-size: 13px;
  color: var(--text-tertiary);
  font-style: italic;
}

.pub-actions {
  text-align: center;
  margin-top: 24px;
}

.pub-toggle-btn {
  padding: 12px 32px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.pub-toggle-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* ===== Talks Section ===== */
.talks-list {
  margin-top: 24px;
}

.talk-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.talk-item:last-child {
  border-bottom: none;
}

.talk-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}

.talk-year {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
}

.talk-type {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.talk-type.invited {
  background: rgba(0, 113, 227, 0.1);
  color: var(--accent);
}

.talk-type.conference {
  background: rgba(52, 199, 89, 0.1);
  color: #34c759;
}

.talk-type.domestic {
  background: rgba(255, 149, 0, 0.1);
  color: #ff9500;
}

.talk-award {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
  background: rgba(255, 59, 48, 0.1);
  color: #ff3b30;
}

.talk-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.talk-detail {
  font-size: 14px;
  color: var(--text-secondary);
}

.talk-body {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.talk-text {
  flex: 1;
}

.talk-image {
  width: 180px;
  height: 120px;
  object-fit: cover;
  border-radius: 10px;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.talks-sub-title {
  font-size: 18px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

/* ===== Timeline (Experience & Education) ===== */
.timeline {
  position: relative;
  margin-top: 32px;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--border);
  z-index: 2;
  transition: all var(--transition);
}

.timeline-marker.current {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-light);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.timeline-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 4px;
  background: white;
  padding: 2px;
}

.timeline-header h3 {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
}

.timeline-header h3 a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition);
}

.timeline-header h3 a:hover {
  color: var(--accent);
}

.company-note {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 400;
}

.timeline-date {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
  flex-shrink: 0;
}

.timeline-role {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 6px;
}

.timeline-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.timeline-highlights {
  list-style: none;
  margin-top: 8px;
}

.timeline-highlights li {
  font-size: 14px;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
  margin-bottom: 4px;
}

.timeline-highlights li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ===== Teaching Section ===== */
.teaching-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.teaching-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: all var(--transition);
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 6;
}

.teaching-card:hover {
  box-shadow: var(--card-shadow-hover);
}

.teaching-icon {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 16px;
}

.teaching-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.teaching-period {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.teaching-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.teaching-highlight-box {
  background: var(--highlight-bg);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.highlight-stat {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
}

.highlight-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -1px;
}

.highlight-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.highlight-note {
  font-size: 12px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.teaching-message {
  margin-top: 32px;
  padding: 24px 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.teaching-message-icon {
  font-size: 20px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.teaching-message p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Awards Section ===== */
.awards-list {
  margin-top: 24px;
}

.award-item {
  display: flex;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.award-item:last-child {
  border-bottom: none;
}

.award-year {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  min-width: 48px;
  flex-shrink: 0;
}

.award-content h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.award-content p {
  font-size: 13px;
  color: var(--text-secondary);
}

.awards-photo {
  margin-top: 32px;
  text-align: center;
}

.awards-photo img {
  max-width: 400px;
  width: 100%;
  border-radius: 16px;
  box-shadow: var(--card-shadow);
}

/* ===== Media Section ===== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.media-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all var(--transition);
  color: var(--text-primary);
}

.media-card:hover {
  box-shadow: var(--card-shadow-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.media-source {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.media-card p {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
}

.media-date {
  font-size: 12px;
  color: var(--text-tertiary);
}

.media-more {
  display: flex;
  align-items: center;
  justify-content: center;
  border-style: dashed;
}

.media-more p {
  text-align: center;
  color: var(--text-tertiary);
  font-style: italic;
}

/* ===== Service Section ===== */
.service-content {
  margin-top: 24px;
}

.service-category {
  margin-bottom: 28px;
}

.service-category h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-tag {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--border);
}

.service-tag.tier1 {
  background: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

.service-tag.tier2 {
  background: var(--tag-bg);
}

.service-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.service-details-heading {
  margin-top: 24px;
  margin-bottom: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
}

.service-detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.service-detail-list li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.service-detail-list li::before {
  content: "–";
  margin-right: 8px;
  color: var(--text-tertiary);
}

.service-detail-list a {
  color: var(--accent);
  text-decoration: none;
}

.service-detail-list a:hover {
  text-decoration: underline;
}

/* ===== Projects Section ===== */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0;
  overflow: hidden;
  transition: all var(--transition);
}

.project-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.project-image {
  width: 100%;
  height: 110px;
  object-fit: cover;
  border-radius: 16px 16px 0 0;
}

.project-body {
  padding: 10px 14px 12px;
}

.project-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.project-card p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tags span {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 600;
  background: var(--tag-bg);
  color: var(--text-secondary);
}

/* ===== Collaboration Section ===== */
.collaboration {
  background: var(--collab-gradient);
  color: #ffffff;
  padding: 100px 0;
}

.collab-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  color: #ffffff;
  margin-bottom: 12px;
}

.collab-title::after {
  background: #ffffff;
}

.collab-subtitle {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 48px;
  margin-top: 16px;
}

.collab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.collab-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 28px;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.collab-card:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.25);
}

.collab-card:hover .collab-icon {
  color: var(--accent-light);
}

/* collab-highlight removed — all cards are equal */

.collab-icon {
  font-size: 28px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 16px;
}

.collab-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #ffffff;
}

.collab-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.collab-card strong {
  color: rgba(255, 255, 255, 0.95);
}

.collab-contact {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.collab-contact p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 24px;
}

.collab-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.collab-btn {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition);
}

.collab-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  transform: translateY(-2px);
}

.collab-btn.primary {
  background: var(--accent);
  border-color: var(--accent);
}

.collab-btn.primary:hover {
  background: var(--accent-hover);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.footer-content--with-personal {
  position: relative;
}

.footer-personal-link {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-tertiary);
  font-size: 13px;
  opacity: 0.4;
  transition: all var(--transition);
}

.footer-personal-link:hover {
  opacity: 1;
  color: var(--accent);
  background: var(--accent-light);
}

.footer-map h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

#clustrmaps-container {
  min-height: 150px;
  border-radius: 8px;
  overflow: hidden;
}

.footer-info {
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
}

.footer-update {
  margin-top: 4px;
}

/* ===== Animations ===== */
.animate-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Section title — no floating animation per user request */

.interest-tags .tag {
  animation: tagPulse 4s ease-in-out infinite;
}

.interest-tags .tag:nth-child(2n) { animation-delay: 0.5s; }
.interest-tags .tag:nth-child(3n) { animation-delay: 1s; }
.interest-tags .tag:nth-child(4n) { animation-delay: 1.5s; }

@keyframes tagPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.hero-links a {
  animation: iconBreathe 3s ease-in-out infinite;
}

.hero-links a:nth-child(2) { animation-delay: 0.4s; }
.hero-links a:nth-child(3) { animation-delay: 0.8s; }
.hero-links a:nth-child(4) { animation-delay: 1.2s; }
.hero-links a:nth-child(5) { animation-delay: 1.6s; }
.hero-links a:nth-child(6) { animation-delay: 2.0s; }

@keyframes iconBreathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.timeline-marker {
  animation: markerGlow 3s ease-in-out infinite;
}

@keyframes markerGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(41, 151, 255, 0); }
  50% { box-shadow: 0 0 8px 2px rgba(41, 151, 255, 0.3); }
}

.timeline-marker.current {
  animation: markerGlowCurrent 2.5s ease-in-out infinite;
}

@keyframes markerGlowCurrent {
  0%, 100% { box-shadow: 0 0 0 0 rgba(41, 151, 255, 0.2); }
  50% { box-shadow: 0 0 12px 4px rgba(41, 151, 255, 0.5); }
}

.highlight-number {
  animation: numberPulse 3s ease-in-out infinite;
}

@keyframes numberPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.pub-citations {
  animation: citGlow 4s ease-in-out infinite;
}

@keyframes citGlow {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.15); }
}

.media-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.media-card:hover {
  transform: translateY(-4px);
}

/* collab-highlight is styled in the collab section above */

.service-tag {
  transition: transform 0.2s ease;
}

.service-tag:hover {
  transform: scale(1.08);
}

.award-year {
  animation: yearShimmer 5s ease-in-out infinite;
}

@keyframes yearShimmer {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; }
}

/* Featured media card highlight */
.media-card.featured {
  border-left: 3px solid var(--accent);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column;
    padding: 12px 16px;
    border-bottom: 1px solid var(--nav-border);
    gap: 0;
  }

  .nav-menu a {
    display: block;
    text-align: center;
    font-size: 15px;
    padding: 12px 16px;
    border-radius: 10px;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

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

  .hero-greeting {
    justify-content: center;
  }

  .hero-affiliations {
    align-items: center;
  }

  .hero-links {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .talk-body {
    flex-direction: column;
  }

  .talk-image {
    width: 100%;
    height: 160px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .teaching-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .collab-grid {
    grid-template-columns: 1fr;
  }

  .collab-title {
    font-size: 28px;
  }

  .collab-links {
    flex-direction: column;
    align-items: center;
  }

  .collab-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
    font-size: 13px;
    white-space: normal;
    text-align: center;
  }

  .footer-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-info {
    text-align: center;
  }

  .news-item {
    gap: 8px;
  }

  .timeline {
    padding-left: 24px;
  }

  .timeline::before {
    left: 7px;
  }

  .timeline-marker {
    left: -24px;
    width: 14px;
    height: 14px;
  }

  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .timeline-date {
    align-self: flex-start;
  }

  .award-item {
    flex-direction: column;
    gap: 8px;
  }

  .highlight-stat {
    flex-direction: column;
    gap: 4px;
  }

  .highlight-number {
    font-size: 42px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 0 60px;
  }

  .hero-name {
    font-size: 32px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
    align-items: center;
  }

  .stat-item {
    align-items: center;
  }

  .media-grid {
    grid-template-columns: 1fr;
  }

  .pub-card-header {
    flex-direction: column;
    gap: 8px;
  }

  .pub-controls {
    flex-direction: column;
  }

  .pub-filters {
    gap: 6px;
  }

  .pub-sort {
    flex-wrap: wrap;
  }

  .pub-filter {
    padding: 6px 14px;
    font-size: 12px;
  }
}

/* ===== Print Styles ===== */
@media print {
  .navbar,
  .nav-toggle,
  .btn-icon,
  .hero-decoration,
  .collab-links,
  #clustrmaps-container {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 20px 0;
  }

  .section {
    padding: 20px 0;
  }

  .animate-in {
    opacity: 1;
    transform: none;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}