:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --bg-strong: #ffffff;
  --surface: #ffffff;
  --surface-2: #e9eef1;
  --text: #171717;
  --text-soft: #5d646b;
  --text-muted: #8b9198;
  --border: #d8e0e4;
  --border-soft: rgba(23, 23, 23, 0.08);
  --accent: #0f766e;
  --accent-2: #b45309;
  --accent-soft: #d5f1eb;
  --ink: #111827;
  --shadow: 0 18px 60px rgba(21, 38, 48, 0.11);
  --shadow-soft: 0 10px 30px rgba(21, 38, 48, 0.08);
  --radius: 8px;
  --max: 1120px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111827;
  --bg-strong: #0b1220;
  --surface: #172033;
  --surface-2: #202a3c;
  --text: #f4f7fb;
  --text-soft: #b9c2cf;
  --text-muted: #7d8899;
  --border: #2b374c;
  --border-soft: rgba(244, 247, 251, 0.09);
  --accent: #2dd4bf;
  --accent-2: #f59e0b;
  --accent-soft: #123b3a;
  --ink: #f8fafc;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
  --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.28);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 32rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-strong) 44rem, var(--bg) 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(125, 136, 153, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 136, 153, 0.09) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 70%);
}

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, var(--accent) 55%, transparent);
  text-underline-offset: 0.18em;
  transition: color 160ms ease, text-decoration-color 160ms ease;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

::selection {
  background: var(--accent-soft);
  color: var(--text);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transform: translateY(-160%);
}

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  width: min(100% - 32px, var(--max));
  margin: 14px auto 0;
  padding: 10px 12px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px) saturate(160%);
}

.brand,
.nav-links,
.theme-toggle,
.button,
.text-button,
.inline-button {
  display: inline-flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
}

.nav-links {
  justify-content: center;
  gap: 4px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  padding: 8px 10px;
  color: var(--text-soft);
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
  border-radius: 999px;
}

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

.theme-toggle {
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--text);
  cursor: pointer;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.icon-sun,
[data-theme="dark"] .icon-moon {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: block;
}

.hero,
.section,
.site-footer {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.hero {
  padding: 92px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3.2rem, 7vw, 6.4rem);
  font-weight: 800;
}

h2 {
  max-width: none;
  font-size: clamp(1.65rem, 2.4vw, 2.55rem);
  font-weight: 780;
}

h3 {
  font-size: 1.1rem;
  font-weight: 750;
}

.hero-role {
  margin: 22px 0 0;
  color: var(--text-soft);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  font-weight: 650;
}

.hero-summary {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.hero-summary strong {
  color: var(--text);
}

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

.button {
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.35) inset;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  transform: translateY(-1px);
}

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

[data-theme="dark"] .button.primary {
  color: #111827;
  background: #f8fafc;
  border-color: #f8fafc;
}

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

.profile-image {
  position: relative;
  display: grid;
  min-height: 410px;
  place-items: center;
  color: #ffffff;
  isolation: isolate;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.92), rgba(180, 83, 9, 0.78)),
    linear-gradient(45deg, transparent 47%, rgba(255, 255, 255, 0.25) 48% 52%, transparent 53%),
    var(--surface-2);
}

.profile-image::before,
.profile-image::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.profile-image::before {
  width: 58%;
  aspect-ratio: 1;
  border-radius: 50%;
}

.profile-image::after {
  inset: 28px;
  border-radius: var(--radius);
}

.profile-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  z-index: 1;
}

.profile-image img + span {
  opacity: 0;
}

.profile-image.is-missing img {
  display: none;
}

.profile-image.is-missing img + span {
  opacity: 1;
}

.profile-image span {
  z-index: 2;
  font-family: var(--mono);
  font-weight: 600;
  text-transform: uppercase;
}

.profile-meta {
  display: grid;
  gap: 10px;
  padding: 18px;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.profile-meta span {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}

.profile-meta span:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.hero-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  overflow: hidden;
  margin-top: 54px;
  color: var(--text-soft);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.hero-strip span {
  min-height: 70px;
  display: grid;
  place-items: center;
  padding: 12px;
  font-weight: 750;
  text-align: center;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.section {
  padding: 82px 0;
  scroll-margin-top: 96px;
}

.section + .section {
  border-top: 1px solid var(--border-soft);
}

.section-muted {
  width: 100%;
  max-width: none;
  padding-inline: max(16px, calc((100vw - var(--max)) / 2));
  background: color-mix(in srgb, var(--surface-2) 65%, transparent);
}

.section-heading {
  margin-bottom: 32px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 40px;
  align-items: start;
}

.lead {
  margin: 0;
  color: var(--text-soft);
  font-size: clamp(1.2rem, 1.7vw, 1.55rem);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.fact-grid div {
  min-height: 150px;
  padding: 20px;
  background: var(--surface);
}

.fact-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
}

.fact-label {
  color: var(--text-soft);
  font-size: 0.9rem;
}

.news-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.news-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-soft);
}

.news-list time,
.pub-year,
.timeline time,
.service-card span {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
}

.extra-news {
  display: none !important;
}

.news-list.is-expanded .extra-news {
  display: grid !important;
}

.text-button,
.inline-button {
  gap: 8px;
  padding: 0;
  margin-top: 18px;
  color: var(--accent);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
  background: none;
  border: 0;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card,
.publication,
.service-card,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.project-card {
  overflow: hidden;
}

.project-visual {
  min-height: 210px;
  background-color: var(--surface-2);
  background-image:
    linear-gradient(135deg, rgba(255, 255, 255, 0.22), transparent),
    radial-gradient(circle at 72% 28%, rgba(255, 255, 255, 0.3), transparent 22%),
    linear-gradient(135deg, var(--accent), var(--accent-2));
}

.visual-two {
  background-image:
    linear-gradient(120deg, rgba(255, 255, 255, 0.22), transparent),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.2) 0 2px, transparent 2px 22px),
    linear-gradient(135deg, #334155, var(--accent));
}

.visual-three {
  background-image:
    radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.35), transparent 18%),
    radial-gradient(circle at 75% 65%, rgba(255, 255, 255, 0.28), transparent 20%),
    linear-gradient(135deg, var(--accent-2), #7c3aed);
}

.card-body {
  padding: 20px;
}

.card-body p,
.publication p,
.timeline p,
.service-card p,
.contact-card p {
  margin: 10px 0 0;
  color: var(--text-soft);
}

.tag-row,
.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.tag-row {
  margin-bottom: 12px;
}

.tag-row span {
  padding: 4px 8px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--accent-soft);
  border-radius: 999px;
}

.link-row {
  margin-top: 16px;
}

.link-row a,
.link-row button {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 750;
  line-height: 1.2;
}

.link-row .inline-button {
  margin-top: 0;
}

.publication-list {
  display: grid;
  gap: 16px;
}

.publication {
  display: grid;
  grid-template-columns: minmax(180px, 240px) 1fr;
  gap: 22px;
  padding: 22px;
}

.pub-meta {
  display: grid;
  gap: 12px;
  align-content: start;
}

.publication-media {
  position: relative;
  width: 100%;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}

.publication-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.authors {
  color: var(--text) !important;
}

.bibtex {
  display: none;
  max-width: 100%;
  margin: 18px 0 0;
  padding: 16px;
  overflow-x: auto;
  color: var(--text-soft);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.bibtex.is-visible {
  display: block;
}

code {
  font-family: var(--mono);
  font-size: 0.84rem;
}

.timeline {
  display: grid;
  gap: 0;
  max-width: 900px;
  border-left: 1px solid var(--border);
}

.timeline article {
  position: relative;
  padding: 0 0 28px 28px;
}

.timeline article::before {
  position: absolute;
  top: 4px;
  left: -7px;
  width: 13px;
  height: 13px;
  content: "";
  background: var(--accent);
  border: 3px solid var(--bg);
  border-radius: 50%;
}

.timeline h3 {
  margin-top: 6px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.timeline-tags span {
  padding: 4px 8px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--accent-soft);
  border-radius: 999px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  padding: 22px;
}

.service-card h3 {
  margin-top: 12px;
}

.contact-section {
  padding-bottom: 56px;
}

.contact-card {
  padding: clamp(28px, 5vw, 56px);
}

.contact-card p:not(.eyebrow) {
  max-width: 650px;
  font-size: 1.05rem;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  padding: 26px 0 44px;
  color: var(--text-soft);
  font-size: 0.92rem;
  border-top: 1px solid var(--border-soft);
}

.site-footer span:last-child {
  display: flex;
  gap: 14px;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
  max-width: min(320px, calc(100vw - 36px));
  padding: 12px 14px;
  color: #ffffff;
  font-weight: 700;
  background: #111827;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

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

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

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

@media (max-width: 960px) {
  .site-nav {
    grid-template-columns: 1fr auto;
    border-radius: var(--radius);
  }

  .nav-links {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    order: 3;
  }

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

  .profile-panel {
    max-width: 520px;
  }

  .project-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .hero,
  .section,
  .site-footer {
    width: min(100% - 24px, var(--max));
  }

  .section-muted {
    padding-inline: 12px;
  }

  .hero {
    padding-top: 56px;
  }

  h1 {
    font-size: clamp(2.7rem, 14vw, 4.4rem);
  }

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

  .profile-image {
    min-height: 300px;
  }

  .news-list li,
  .publication {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}