:root {
  --bg: #f8f9fb;
  --surface: #ffffff;
  --surface-2: #f1f4f8;
  --text: #172033;
  --muted: #637084;
  --line: #d9e0ea;
  --line-strong: #c7d0dd;
  --accent: #3156c8;
  --accent-2: #243f7d;
  --accent-soft: #edf2ff;
  --shadow: 0 12px 34px rgba(26, 43, 76, 0.07);
  --radius: 12px;
  --max: 1180px;
}

[data-theme="dark"] {
  --bg: #0f1622;
  --surface: #151f2e;
  --surface-2: #1b2738;
  --text: #edf2fb;
  --muted: #aab6c7;
  --line: #2c3b50;
  --line-strong: #3a4a61;
  --accent: #86a4ff;
  --accent-2: #c1d0ff;
  --accent-soft: #1b2b4c;
  --shadow: 0 14px 38px rgba(0, 0, 0, 0.22);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

:where(a, button):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 70%, transparent);
  outline-offset: 3px;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
img { max-width: 100%; display: block; }
button, a { -webkit-tap-highlight-color: transparent; }

.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.narrow { width: min(calc(100% - 40px), 820px); margin-inline: auto; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-top: 3px solid var(--accent-2);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 93%, transparent);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 780;
  letter-spacing: -0.025em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 35px;
  height: 35px;
  border-radius: 8px;
  color: #fff;
  background: var(--accent);
  box-shadow: none;
  font-size: .78rem;
  letter-spacing: -.03em;
}

.nav-links { display: flex; align-items: center; gap: 4px; }

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 650;
  font-size: .9rem;
  padding: 8px 11px;
  border-radius: 7px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--surface-2);
}

.header-actions { display: flex; align-items: center; gap: 8px; }

.icon-button,
.menu-button {
  width: 39px;
  height: 39px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: .95rem;
}

.menu-button { display: none; }

/* ---------- Type ---------- */
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--accent);
  font-weight: 800;
  font-size: .72rem;
  margin-bottom: 13px;
}

h1, h2, h3 {
  line-height: 1.13;
  margin-top: 0;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(3rem, 7vw, 6.2rem);
  margin-bottom: 18px;
  font-weight: 760;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.15rem);
  margin-bottom: 18px;
  font-weight: 735;
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  font-weight: 720;
}

.lead {
  font-size: clamp(1.06rem, 1.8vw, 1.28rem);
  color: var(--muted);
  max-width: 760px;
  margin: 0 0 28px;
}

.role-line {
  color: var(--accent-2);
  font-weight: 760;
  font-size: .96rem;
  margin-bottom: 12px;
}

/* ---------- Buttons ---------- */
.button-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 43px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-weight: 720;
  font-size: .88rem;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}

.button.primary {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

.button.primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.button.ghost { background: transparent; }

.link-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.scholar-icon {
  box-sizing: content-box;
  padding: 2px;
  border-radius: 50%;
  background: #fff;
}

[data-theme="dark"] .link-icon[src$="github.svg"] { filter: invert(1); }

/* ---------- Home hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 78px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.hero::before {
  content: "";
  position: absolute;
  right: -190px;
  top: -270px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 8%, transparent), transparent 69%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 64px;
  align-items: center;
}

.hero .lead { max-width: 720px; }

.profile-panel {
  position: relative;
  padding: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.profile-visual {
  aspect-ratio: 1 / .99;
  border-radius: 9px;
  overflow: hidden;
  background:
    linear-gradient(rgba(49, 86, 200, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(49, 86, 200, .045) 1px, transparent 1px),
    var(--accent-soft);
  background-size: 24px 24px;
  border: 1px solid var(--line);
}

[data-theme="dark"] .profile-visual {
  background:
    linear-gradient(rgba(134, 164, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(134, 164, 255, .06) 1px, transparent 1px),
    #182640;
  background-size: 24px 24px;
}

.profile-visual img {
  width: 100%;
  height: 100%;
}

.profile-visual img {
  object-fit: cover;
}

.profile-carousel {
  position: relative;
  display: grid;
}

.carousel-slide {
  grid-area: 1 / 1;
  color: var(--accent);
  opacity: 0;
  pointer-events: none;
  transform: translateX(24px) scale(.98);
  transition: opacity .55s ease, transform .55s ease;
}

.carousel-slide.active {
  z-index: 1;
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.slide-caption {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 8px;
  color: #fff;
  background: rgba(23, 32, 51, .78);
  backdrop-filter: blur(8px);
}

.slide-caption strong,
.slide-caption span { display: block; }
.slide-caption span { font-size: .76rem; opacity: .8; }

.carousel-controls {
  position: absolute;
  z-index: 2;
  top: 16px;
  right: 16px;
  display: flex;
  gap: 7px;
}

.carousel-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--surface);
  cursor: pointer;
  transition: width .25s ease, background .25s ease;
}

.carousel-dot.active {
  width: 25px;
  border-radius: 10px;
  background: var(--accent);
}


/* ---------- Sections ---------- */
.section { padding: 84px 0; }

.section.alt {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 36px;
  align-items: end;
  margin-bottom: 36px;
}

.section-header p {
  max-width: 610px;
  margin: 0;
  color: var(--muted);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-block: 1px solid var(--line-strong);
}

.grid-3 > .card {
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
}

.grid-3 > .card + .card { border-left: 1px solid var(--line-strong); }

.card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 5px 18px rgba(35, 50, 80, .035);
  overflow: hidden;
}


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

.card-number {
  font-size: .72rem;
  color: var(--accent);
  font-weight: 850;
  letter-spacing: .12em;
  margin-bottom: 32px;
}

.tag-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 19px; }

.tag {
  padding: 5px 9px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--line));
  background: var(--accent-soft);
  color: var(--accent-2);
  font-weight: 700;
  font-size: .73rem;
}

/* ---------- Featured research ---------- */
.feature-project {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-copy { padding: clamp(28px, 5vw, 50px); }
.feature-copy p { color: var(--muted); }

.feature-art {
  min-height: 420px;
  background:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(145deg, #17294e, #3156c8);
  background-size: 30px 30px, 30px 30px, auto;
  display: grid;
  place-items: center;
}


.research-feature-art {
  background:
    linear-gradient(rgba(49, 86, 200, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(49, 86, 200, .045) 1px, transparent 1px),
    var(--accent-soft);
  background-size: 30px 30px;
}

.research-glove-figure {
  width: auto;
  max-width: 98%;
  height: 550px;
  object-fit: contain;
}


/* ---------- Timeline ---------- */
.timeline { position: relative; margin-top: 24px; }

.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line-strong);
}

.timeline-item {
  position: relative;
  padding-left: 34px;
  margin-bottom: 34px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--accent);
}

.alt .timeline-item::before { border-color: var(--surface); }

.timeline-item .date {
  color: var(--accent);
  font-weight: 800;
  font-size: .78rem;
  margin-bottom: 4px;
}

.timeline-item p { margin: 4px 0 0; color: var(--muted); }

.education-timeline .timeline-item {
  padding-bottom: 36px;
}

.cv-degree {
  margin: 5px 0 10px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 750;
}

.education-timeline p strong,
.cv-result strong { color: var(--text); }

.cv-result {
  margin-top: 10px !important;
}
.cv-thesis {
  display: grid;
  justify-items: start;
  gap: 3px;
  max-width: 720px;
  margin-top: 12px !important;
  font-size: .9rem;
}

.cv-thesis strong {
  color: var(--text);
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.cv-thesis-grade {
  margin-top: 3px;
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
}

.cv-thesis a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.cv-thesis a:hover,
.cv-thesis a:focus-visible { text-decoration: underline; }

/* ---------- Inner pages ---------- */
.page-hero {
  padding: 68px 0 54px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.page-hero h1 {
  font-size: clamp(2.7rem, 6.4vw, 5rem);
  max-width: 920px;
}

.publication {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
}

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

.pub-year { color: var(--accent); font-weight: 850; }
.pub-title { font-weight: 760; font-size: 1.06rem; margin-bottom: 4px; }
.pub-meta { color: var(--muted); }

.publication-link {
  display: inline-flex;
  margin: 10px 12px 0 0;
  color: var(--accent);
  font-size: .8rem;
  font-weight: 750;
  text-decoration: none;
}

.publication-link:hover,
.publication-link:focus-visible { text-decoration: underline; }

.status {
  display: inline-flex;
  margin-top: 10px;
  padding: 4px 8px;
  border-radius: 5px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--line));
  background: var(--accent-soft);
  color: var(--accent-2);
  font-size: .7rem;
  font-weight: 780;
}

/* ---------- Projects ---------- */
.project-card { padding: 0; }

.project-thumb {
  height: 300px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}

.project-thumb img {
  width: 100%;
  height: 100%;
}

.project-thumb img {
  object-fit: cover;
  transition: transform .35s ease;
}

.project-card:hover .project-thumb img { transform: scale(1.035); }

.project-link {
  display: inline-flex;
  margin-top: 20px;
  color: var(--accent);
  font-size: .88rem;
  font-weight: 800;
  text-decoration: none;
}

.project-link:hover { text-decoration: underline; }
.project-body { padding: 24px; }

.project-meta {
  color: var(--accent);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .02em;
  margin-bottom: 8px;
}

/* ---------- CV ---------- */
.cv-grid {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: 40px;
}

.cv-aside {
  position: sticky;
  top: 96px;
  align-self: start;
}

.skill-group + .skill-group { margin-top: 22px; }
.skill-group h3 { font-size: .92rem; margin-bottom: 8px; }
.skill-group p { color: var(--muted); margin: 0; }

.academic-links {
  display: grid;
  gap: 6px;
}

.academic-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: .9rem;
  font-weight: 700;
  text-decoration: none;
}

.academic-links a:hover { text-decoration: underline; }

.clean-list { margin: 0; padding-left: 20px; }
.clean-list li + li { margin-top: 8px; }


/* ---------- Spacing utilities ---------- */
.section-group { margin-top: 48px; }
.section-group + .section-group { margin-top: 54px; }
.subsection-heading { margin-top: 58px; }

/* ---------- Footer ---------- */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-links { display: flex; gap: 18px; }

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-links .link-icon {
  width: 16px;
  height: 16px;
}

.footer a {
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
  transition: color .2s ease, text-decoration-color .2s ease;
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--text);
  text-decoration-color: currentColor;
}

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .45s ease, transform .45s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .button { transition: none; }
  .carousel-slide,
  .carousel-dot,
  .project-thumb img { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid,
  .feature-project,
  .cv-grid {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr 1fr;
    border: 0;
    gap: 16px;
  }

  .grid-3 > .card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
  }

  .grid-3 > .card + .card { border-left: 1px solid var(--line); }

  .feature-art {
    min-height: 330px;
    order: -1;
  }

  .research-glove-figure { height: 340px; }

  .cv-aside { position: static; }

  .menu-button { display: grid; }

  .nav-links {
    display: none;
    position: absolute;
    left: 20px;
    right: 20px;
    top: 66px;
    padding: 10px;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px; }
}

@media (max-width: 640px) {
  .container,
  .narrow {
    width: min(calc(100% - 28px), var(--max));
  }

  .hero { padding: 60px 0 52px; }
  h1 { font-size: 3.3rem; }
  .section { padding: 62px 0; }

  .section-header { display: block; }
  .section-header > p { margin-top: 16px; }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }


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

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions .button { display: none; }
}