:root {
  color-scheme: dark;
  --bg: #030711;
  --body-bg: radial-gradient(circle at top left, #071730 0%, #030711 60%);
  --card: #0b1220;
  --card-alt: #111a2b;
  --text: #f8fafc;
  --muted: #9eb2d1;
  --brand: #50e3c2;
  --accent: #5bc0ff;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 60px rgba(5, 8, 20, 0.45);
  --nav-panel-bg: rgba(3, 7, 17, 0.95);
  --toggle-bg: rgba(255, 255, 255, 0.05);
  --toggle-bg-hover: rgba(255, 255, 255, 0.12);
  font-family: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', sans-serif;
  scroll-behavior: smooth;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 1rem;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--brand);
  color: #031222;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px);
  background: rgba(3, 7, 17, 0.85);
  border-bottom: 1px solid var(--border);
  z-index: 999;
}

.nav {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 0.95rem clamp(1rem, 4vw, 2rem);
  display: flex;
  position: relative;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.35rem;
  border-radius: 0.5rem;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-toggle span {
  width: 1.75rem;
  height: 2px;
  background: var(--text);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 0.4rem 0.95rem;
  background: var(--toggle-bg);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: var(--toggle-bg-hover);
  transform: translateY(-2px);
}

.theme-icon {
  font-size: 0.95rem;
}

main {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 2vw, 2rem);
}

.hero {
  display: grid;
  grid-template-columns: minmax(320px, 2fr) minmax(240px, 1fr);
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: start;
}

.hero-text{
  text-align: justify;
}
.hero-text h1 {
  font-size: clamp(2.5rem, 5vw, 3.15rem);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.hero-text span {
  display: block;
  color: var(--muted);
  font-weight: 400;
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  margin-top: 0.35rem;
}

.hero .lede {
  font-size: 1rem;
  color: var(--muted);
}

.bio-detail {
  margin-top: 0.75rem;
  color: var(--text);
  font-size: 1rem;
}

.social-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.25rem 0 0.75rem;
  padding: 0;
}

.social-links a {
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid transparent;
}

.social-links a:hover,
.social-links a:focus-visible {
  border-color: var(--accent);
}

.hero-media {
  position: relative;
  margin-top: 1.75rem;
}
.hero-photo{
  position: relative;
}

.hero-media p{
  margin: 0;
}
.hero-media img {
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-media .badge {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  padding: 0.85rem 1.1rem;
  background: rgba(3, 7, 17, 0.85);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  color: var(--muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin: 1.05rem 0;
  margin-bottom: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.55rem 1.55rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: linear-gradient(120deg, var(--brand), var(--accent));
  color: #031222;
}

.btn.ghost {
  border-color: var(--border);
  color: var(--text);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.quick-facts {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  color: var(--muted);
}

.quick-facts li {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 1rem;
  text-align: center;
}

.stat-card strong {
  font-size: 2rem;
  display: block;
}

.section-heading {
  max-width: 720px;
}

.section-heading h2 {
  margin: 0.2rem 0 0.6rem;
  font-size: clamp(2rem, 4vw, 2.6rem);
}

.section-heading p {
  color: var(--muted);
  margin: 0;
}

.news-timeline {
  margin: 1.35rem 0 0;
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  border-left: 2px solid var(--border);
}

.news-timeline:not(.expanded) li:nth-of-type(n + 4) {
  display: none;
}

.news-timeline li {
  position: relative;
  padding-left: 1.15rem;
}

.news-timeline li::before {
  content: '';
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 999px;
  background: var(--brand);
  border: 2px solid var(--bg);
  position: absolute;
  left: -0.5rem;
  top: 0.4rem;
  box-shadow: 0 0 0 2px rgba(80, 227, 194, 0.25);
}

.news-timeline time {
  font-size: 0.9rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.news-timeline p {
  margin: 0;
}
.news-timeline h3{
  margin-bottom: 0;
  margin-top: 0.5rem;
}

.news-toggle {
  margin-top: 1rem;
  margin-left: 1.1rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
  padding: 0.65rem 1.5rem;
  cursor: pointer;
  align-self: flex-start;
}

.news-toggle:hover,
.news-toggle:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}
.pub-grid {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.25rem;
}

.pub-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.85rem 0.9rem;
  border-radius: 1rem;
  display: grid;
  grid-template-columns: minmax(110px, 200px) 1fr;
  gap: 0.9rem;
  align-items: start;
}

.pub-cover {
  width: 100%;
  border-radius: 7px;
  object-fit: cover;
  border: 1px solid var(--border);
  align-self: center;
}

.pub-content {
  display: flex;
  flex-direction: column;
}

.pub-card h3 {
  margin-top: 0rem;
  margin-bottom: 0.25rem;
  font-size: 1.25rem;
  line-height: 1.2;
}

.pub-card .authors {
  color: var(--muted);
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.45;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.25rem;
}

.pub-links a {
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid transparent;
}

.pub-links a:hover,
.pub-links a:focus-visible {
  border-color: var(--accent);
}

.venue {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.experience .timeline {
  margin-top: 1.25rem;
  display: grid;
  gap: 0.85rem;
}

.timeline article {
  border-left: 3px solid var(--brand);
  padding: 0.75rem 0.9rem 0.8rem 1.25rem;
  background: var(--card-alt);
  border-radius: 1rem;
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0.15rem 0 0.5rem;
}

.timeline-logo {
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: rgba(80, 227, 194, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.55rem;
  max-width: 10rem;
}

.timeline-logo img {
  max-height: 2.6rem;
  width: auto;
  height: auto;
  display: block;
  border-radius: 0;
}

.timeline-meta {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.experience h3{
  margin: 0;
}

.timeline-date {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

.education-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.education-grid article {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 1rem;
}

.school {
  color: var(--muted);
  margin: 0.35rem 0 0.75rem;
}

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

.talk-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.talk-list p.details{
  margin: 0;
}
.talk-list li {
  display: grid;
  grid-template-columns: minmax(110px, 140px) 1fr;
  gap: 0.75rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}

.talk-date {
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  margin: 0.1rem 0 0;
}


.talk-list h3{
  margin: 0 0 0.25rem;
}
.talk-list li:last-child{
  border-bottom: none;
}
.muted {
  color: var(--muted);
}

.pill-list {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill-list span {
  border: 1px solid var(--border);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.95rem;
}

.skills-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}

.skill-card {
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 0.9rem 1rem;
}

.skill-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.skill-card p {
  margin: 0;
  color: var(--muted);
}

.contact-card {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.65rem;
}

.contact-card > div {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 0.85rem 1rem;
}

.site-footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  color: var(--muted);
}

.back-to-top {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--accent);
  text-decoration: none;
}

body[data-theme='light'] {
  color-scheme: light;
  --bg: #f8fafc;
  --body-bg: radial-gradient(circle at top left, #eef4ff 0%, #fbfdff 55%);
  --card: #ffffff;
  --card-alt: #f1f5f9;
  --text: #0f172a;
  --muted: #475569;
  --brand: #2563eb;
  --accent: #0f9d58;
  --border: rgba(15, 23, 42, 0.1);
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.18);
  --nav-panel-bg: rgba(255, 255, 255, 0.98);
  --toggle-bg: rgba(15, 23, 42, 0.05);
  --toggle-bg-hover: rgba(15, 23, 42, 0.12);
}

body[data-theme='light'] .hero-media .badge {
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
}

body[data-theme='light'] .site-header {
  background: rgba(255, 255, 255, 0.85);
}

@media (max-width: 720px) {
  .nav-actions {
    align-items: flex-end;
    gap: 0.5rem;
  }

  .nav-links {
    position: absolute;
    inset: 100% 1rem auto;
    flex-direction: column;
    background: var(--nav-panel-bg);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: 1rem;
    display: none;
    min-width: min(260px, 90vw);
  }

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

  .nav-toggle {
    display: flex;
  }
}

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

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

  .news-timeline {
    border-left: none;
  }

  .news-timeline li {
    padding-left: 0;
  }

  .news-timeline li::before {
    display: none;
  }

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

  .news-toggle {
    margin-left: 0;
  }
}
#work{
  margin-top: -2rem;
}