:root {
  color-scheme: dark;
  --bg: #101315;
  --bg-elevated: #151a1d;
  --surface: rgba(22, 29, 32, 0.9);
  --surface-strong: #1d2529;
  --surface-muted: #263136;
  --text: #f0f5f4;
  --muted: #a8b6b8;
  --subtle: #758488;
  --accent: #38d5c3;
  --accent-strong: #9be96f;
  --accent-warm: #ffb454;
  --border: rgba(118, 145, 148, 0.28);
  --border-strong: rgba(56, 213, 195, 0.45);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Roboto", Arial, sans-serif;
  color: var(--text);
  background:
    linear-gradient(rgba(56, 213, 195, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 213, 195, 0.04) 1px, transparent 1px),
    linear-gradient(135deg, #101315 0%, #15191c 48%, #11181a 100%);
  background-size: 48px 48px, 48px 48px, auto;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  content: "";
  background:
    linear-gradient(90deg, transparent 0 68%, rgba(155, 233, 111, 0.08) 68% 68.15%, transparent 68.15%),
    linear-gradient(115deg, transparent 0 24%, rgba(56, 213, 195, 0.08) 24% 24.12%, transparent 24.12%),
    linear-gradient(15deg, transparent 0 78%, rgba(255, 180, 84, 0.07) 78% 78.12%, transparent 78.12%);
  pointer-events: none;
}

img {
  display: block;
  max-width: 100%;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(155, 233, 111, 0.72);
  outline-offset: 4px;
}

p {
  margin: 0;
  line-height: 1.7;
}

ul {
  margin: 0;
  padding-left: 1.1rem;
}

li {
  padding-left: 0.18rem;
  color: var(--muted);
  line-height: 1.65;
}

li::marker {
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
}

h1 {
  max-width: 12ch;
  color: #ffffff;
  font-size: clamp(3rem, 8vw, 5.8rem);
  font-weight: 900;
}

h2 {
  color: #ffffff;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  font-weight: 800;
}

h3 {
  color: #f8fbfb;
  font-size: 1.1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 17, 19, 0.88);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
}

.brand {
  color: var(--text);
  font-weight: 900;
}

.brand::before {
  display: inline-block;
  width: 0.72em;
  height: 0.72em;
  margin-right: 10px;
  border: 2px solid var(--accent);
  content: "";
  transform: rotate(45deg);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--muted);
}

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

main {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  align-items: center;
  gap: clamp(32px, 7vw, 84px);
  min-height: calc(100vh - 72px);
  padding: 56px 0 72px;
}

.hero::before {
  position: absolute;
  top: 11%;
  right: 0;
  width: min(58vw, 620px);
  height: min(42vw, 420px);
  border: 1px solid rgba(56, 213, 195, 0.18);
  border-radius: 8px;
  content: "";
  background:
    linear-gradient(90deg, rgba(56, 213, 195, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(56, 213, 195, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
  opacity: 0.55;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-summary {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.2rem;
}

.hero-actions,
.contact-links,
.document-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button,
.contact-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 18px;
  font-weight: 700;
}

.button.primary {
  border-color: rgba(56, 213, 195, 0.7);
  color: #071211;
  background: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 213, 195, 0.14), 0 14px 36px rgba(56, 213, 195, 0.16);
}

.button.secondary,
.contact-links a {
  color: var(--text);
  background: rgba(22, 29, 32, 0.82);
}

.button:hover,
.contact-links a:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.headshot {
  position: relative;
  z-index: 1;
  margin: 0;
}

.headshot::before {
  position: absolute;
  inset: 18px -18px -18px 18px;
  z-index: -1;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  content: "";
}

.headshot img {
  width: min(100%, 420px);
  aspect-ratio: 4 / 5;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
  filter: saturate(0.9) contrast(1.06);
}

.section {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) minmax(0, 0.64fr);
  gap: clamp(28px, 6vw, 72px);
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.section-heading {
  display: grid;
  align-content: start;
  gap: 14px;
}

.section-body,
.timeline,
.cards,
.research-layout,
.publication-list {
  display: grid;
  gap: 18px;
}

.section-body {
  color: var(--muted);
  font-size: 1.04rem;
}

.placeholder {
  border-left: 3px solid var(--accent-warm);
  padding-left: 16px;
  color: var(--text);
  background: transparent;
}

.timeline-item,
.card,
.feature,
.publication,
.document-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(56, 213, 195, 0.05), transparent 34%),
    var(--surface);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset;
}

.timeline-item,
.card,
.feature,
.publication {
  display: grid;
  gap: 12px;
  padding: 22px;
}

.timeline-item:hover,
.card:hover,
.feature:hover,
.publication:hover,
.document-card:hover {
  border-color: var(--border-strong);
  background:
    linear-gradient(135deg, rgba(56, 213, 195, 0.09), transparent 38%),
    var(--surface-strong);
}

.cards {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card:last-child {
  grid-column: 1 / -1;
}

.meta,
.pub-type {
  color: var(--subtle);
  font-size: 0.92rem;
  font-weight: 700;
}

.meta a {
  color: var(--accent);
}

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

.pub-type {
  color: var(--accent-warm);
}

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

.publication-group ul {
  display: grid;
  gap: 12px;
}

.publication-group li {
  color: var(--muted);
}

.publication-group em {
  color: var(--text);
  font-style: italic;
}

.featured-paper {
  border-color: var(--border-strong);
}

.paper-meta {
  color: var(--muted);
  font-weight: 700;
}

.paper-meta em {
  color: var(--text);
  font-style: italic;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.document-card {
  display: grid;
  gap: 6px;
  min-width: min(100%, 240px);
  padding: 20px;
  color: var(--text);
}

.document-card span {
  color: var(--subtle);
  font-size: 0.92rem;
}

.document-card strong {
  color: var(--accent);
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-links .contact-card {
  display: grid;
  justify-content: start;
  gap: 6px;
  min-height: 76px;
  padding: 18px 20px;
  text-align: left;
}

.contact-card span {
  color: var(--subtle);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-card strong {
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 1rem;
}

.contact-card:hover strong {
  color: var(--accent);
}

.footer {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--subtle);
  font-size: 0.92rem;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

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

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero::before {
    top: 4%;
    width: 100%;
    height: 360px;
  }

  .headshot {
    order: -1;
  }

  .headshot img {
    width: min(100%, 340px);
  }

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

@media (max-width: 520px) {
  main,
  .nav,
  .footer {
    width: min(100% - 24px, 1120px);
  }

  .nav-links {
    gap: 12px;
    font-size: 0.9rem;
  }

  .hero-actions,
  .document-links {
    flex-direction: column;
  }

  .contact-links {
    grid-template-columns: 1fr;
  }

  .button,
  .contact-links a,
  .document-card {
    width: 100%;
  }

  .section {
    padding: 52px 0;
  }

  .headshot::before {
    inset: 12px -12px -12px 12px;
  }
}