:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-alt: #edf4f1;
  --ink: #1b1f23;
  --muted: #5d6670;
  --line: #d9ded8;
  --accent: #0f766e;
  --accent-strong: #0b5d57;
  --accent-soft: #dff4ee;
  --blue: #2563eb;
  --amber: #d97706;
  --rose: #be123c;
  --shadow: 0 18px 45px rgba(27, 31, 35, 0.08);
  --radius: 8px;
  --max-width: 1180px;
  --header-height: 74px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101411;
  --surface: #181d1a;
  --surface-alt: #17211f;
  --ink: #f4f7f3;
  --muted: #aab4b1;
  --line: #303833;
  --accent: #5eead4;
  --accent-strong: #99f6e4;
  --accent-soft: #143732;
  --blue: #93c5fd;
  --amber: #fbbf24;
  --rose: #fb7185;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  letter-spacing: 0;
}

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

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 6px;
  transform: translateY(-140%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 80;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--blue), var(--amber));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 82%, transparent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(100% - 36px, var(--max-width));
  min-height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.86rem;
  line-height: 1;
}

.brand-text {
  font-size: 1rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 650;
}

.nav a:hover,
.nav a:focus-visible,
.nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--surface-alt);
  outline: 0;
}

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

.button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.button {
  min-height: 42px;
  gap: 8px;
  padding: 0 15px;
  font-weight: 760;
}

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

[data-theme="dark"] .button.primary {
  color: #06201d;
}

.button.ghost {
  background: transparent;
}

.button:hover,
.button:focus-visible,
.icon-button:hover,
.icon-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  outline: 0;
}

.icon-button {
  width: 42px;
  height: 42px;
}

.button svg,
.icon-button svg,
.social-link svg,
.contact-link svg,
.mini-link svg,
.search-box svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.2;
  flex: 0 0 18px;
}

.meta-pill svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  margin-right: 7px;
  stroke-width: 2.35;
}

.menu-toggle {
  display: none;
}

.site-main {
  min-height: calc(100vh - var(--header-height));
}

.container {
  width: min(100% - 36px, var(--max-width));
  margin: 0 auto;
}

.page-hero {
  padding: 72px 0 44px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--accent-strong);
  font-size: 0.83rem;
  font-weight: 800;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

.page-title {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.page-lede {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1.03rem, 1.5vw, 1.22rem);
}

.home-hero {
  padding: 62px 0 54px;
}

.home-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  gap: 44px;
  align-items: center;
}

.hero-copy {
  max-width: 760px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--accent-strong);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.84rem;
}

.hero-kicker::before {
  content: "";
  width: 36px;
  height: 2px;
  background: currentColor;
}

.hero-title {
  margin: 0;
  font-size: clamp(3rem, 7vw, 7.4rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.hero-role {
  margin: 22px 0 0;
  color: var(--ink);
  font-size: clamp(1.05rem, 2vw, 1.42rem);
  font-weight: 760;
}

.hero-lede {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.meta-pill,
.tag,
.pub-type {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-height: 30px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.hero-aside {
  display: grid;
  gap: 16px;
}

.profile-frame {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.profile-frame img {
  width: 100%;
  aspect-ratio: 1 / 1.18;
  object-fit: cover;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat-tile {
  min-height: 104px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.stat-number {
  display: block;
  color: var(--accent-strong);
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1;
  font-weight: 850;
}

.stat-label {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
  font-weight: 700;
}

.section-band {
  padding: 64px 0;
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.section-band.alt {
  background: var(--surface-alt);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(280px, 0.28fr);
  gap: 30px;
  align-items: end;
  margin-bottom: 28px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.7rem);
  line-height: 1.1;
}

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

.quick-grid,
.project-grid,
.skill-grid,
.contact-grid,
.award-grid {
  display: grid;
  gap: 16px;
}

.quick-grid {
  grid-template-columns: repeat(3, 1fr);
}

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

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

.contact-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.info-card,
.project-card,
.skill-group,
.contact-card,
.award-card,
.publication-item,
.timeline-item,
.cv-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.info-card,
.project-card,
.skill-group,
.contact-card,
.award-card,
.publication-item {
  padding: 24px;
}

.info-card h3,
.project-card h3,
.skill-group h3,
.contact-card h3,
.award-card h3,
.publication-item h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.25;
}

.info-card p,
.project-card p,
.skill-group p,
.contact-card p,
.award-card p,
.publication-item p {
  margin: 12px 0 0;
  color: var(--muted);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.card-icon svg {
  width: 22px;
  height: 22px;
  stroke-width: 2.15;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 16px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 18px;
  width: 2px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  margin-left: 54px;
  padding: 26px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -45px;
  top: 28px;
  width: 14px;
  height: 14px;
  border: 3px solid var(--bg);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--line);
}

.timeline-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.timeline-item h2,
.timeline-item h3 {
  margin: 0;
  font-size: 1.24rem;
  line-height: 1.24;
}

.timeline-meta,
.publication-meta,
.project-meta {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.timeline-date {
  min-width: max-content;
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 800;
}

.clean-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.clean-list li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
}

.clean-list li + li {
  margin-top: 8px;
}

.clean-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: min(100%, 320px);
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--muted);
}

.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}

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

.seg-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  padding: 0 12px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 760;
}

.seg-button:hover,
.seg-button:focus-visible,
.seg-button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
  outline: 0;
}

.publication-list {
  display: grid;
  gap: 14px;
}

.publication-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.publication-links,
.project-links,
.footer-links,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.mini-link,
.contact-link,
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-strong);
  font-weight: 800;
  text-decoration: none;
}

.mini-link:hover,
.mini-link:focus-visible,
.contact-link:hover,
.contact-link:focus-visible,
.social-link:hover,
.social-link:focus-visible {
  text-decoration: underline;
  outline: 0;
}

.cv-panel {
  display: grid;
  grid-template-columns: 0.72fr 0.28fr;
  gap: 30px;
  align-items: center;
  padding: 28px;
}

.cv-panel h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
}

.cv-panel p {
  margin: 12px 0 0;
  color: var(--muted);
}

.cv-preview {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
}

.cv-preview img {
  width: 100%;
  max-height: 310px;
  object-fit: cover;
  object-position: top;
}

.project-card {
  display: flex;
  flex-direction: column;
}

.project-card .project-links {
  margin-top: auto;
  padding-top: 18px;
}

.project-meta {
  margin: 0 0 12px;
  color: var(--accent-strong);
}

.skills-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.66fr) minmax(280px, 0.34fr);
  gap: 18px;
  align-items: start;
}

.language-list {
  display: grid;
  gap: 10px;
}

.language-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.language-row:last-child {
  border-bottom: 0;
}

.contact-card {
  min-height: 190px;
}

.contact-card .contact-link {
  margin-top: 18px;
}

.site-footer {
  padding: 38px 0;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-grid {
  width: min(100% - 36px, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, auto);
  gap: 28px;
  align-items: center;
}

.footer-title {
  margin: 0;
  font-weight: 850;
}

.footer-meta {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.developer-credit {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-credit-final {
  grid-column: 1 / -1;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.developer-credit a {
  color: var(--accent-strong);
  font-weight: 850;
  text-decoration: none;
}

.developer-credit a:hover,
.developer-credit a:focus-visible {
  text-decoration: underline;
  outline: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.footer-links .social-link {
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  text-decoration: none;
}

.footer-links .social-link:hover,
.footer-links .social-link:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
  text-decoration: none;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 180ms ease;
  cursor: pointer;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 70;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 14px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.empty-state {
  padding: 26px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .header-inner {
    gap: 14px;
  }

  .nav a {
    padding: 0 8px;
    font-size: 0.85rem;
  }

  .home-hero-grid,
  .cv-panel,
  .skills-layout {
    grid-template-columns: 1fr;
  }

  .profile-frame img {
    max-height: 680px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 68px;
  }

  .header-inner {
    width: min(100% - 24px, var(--max-width));
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 12px;
    right: 12px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .nav a {
    min-height: 44px;
    padding: 0 12px;
  }

  .header-actions {
    margin-left: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .quick-grid,
  .project-grid,
  .skill-grid,
  .contact-grid,
  .award-grid,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links {
    justify-self: center;
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .container,
  .footer-grid {
    width: min(100% - 24px, var(--max-width));
  }

  .brand-text {
    display: none;
  }

  .header-inner {
    gap: 10px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .header-actions {
    gap: 6px;
  }

  .header-actions .button {
    width: auto;
  }

  .icon-button {
    width: 40px;
    flex-basis: 40px;
    height: 40px;
    border-radius: 8px;
  }

  .nav-cv {
    min-height: 40px;
    padding: 0 12px;
    border-color: var(--ink);
    background: var(--ink);
    color: var(--bg);
    border-radius: 8px;
  }

  [data-theme="dark"] .nav-cv {
    border-color: var(--accent);
    background: var(--accent);
    color: #06201d;
  }

  .home-hero {
    padding-top: 44px;
  }

  .page-hero {
    padding-top: 48px;
  }

  .hero-title,
  .page-title {
    font-size: clamp(2.4rem, 15vw, 4.4rem);
  }

  .hero-actions,
  .toolbar,
  .timeline-top,
  .publication-head,
  .footer-grid {
    align-items: stretch;
    flex-direction: column;
  }

  .button,
  .search-box {
    width: 100%;
  }

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

  .timeline::before {
    left: 8px;
  }

  .timeline-item {
    margin-left: 30px;
    padding: 22px;
  }

  .timeline-item::before {
    left: -29px;
  }

  .segmented {
    width: 100%;
  }

  .seg-button {
    flex: 1 1 auto;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-links {
    grid-template-columns: repeat(4, 44px);
    justify-content: center;
    justify-self: center;
    gap: 8px;
  }

  .footer-links .social-link {
    width: 44px;
    height: 44px;
    min-height: 44px;
    padding: 0;
    justify-content: center;
  }

  .footer-link-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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