@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap");

:root {
  --ink: #172b3a;
  --muted: #60717d;
  --line: #dce5e8;
  --paper: #fff;
  --tint: #f4f8f8;
  --teal: #087e83;
  --teal-dark: #075e63;
  --accent: #e5f4f1;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.7 "DM Sans", system-ui, -apple-system, sans-serif;
}

h1,
h2,
h3 {
  font-family: Manrope, "DM Sans", sans-serif;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

h1 {
  margin: 0.25rem 0 1.2rem;
  font-size: clamp(2.6rem, 6vw, 4.7rem);
  font-weight: 800;
}

h2 {
  margin: 0.2rem 0 1rem;
  font-size: clamp(1.65rem, 3vw, 2.25rem);
}

h3 {
  margin: 0.35rem 0 0.7rem;
  font-size: 1.2rem;
}

p {
  margin: 0.5rem 0 1rem;
}

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

code {
  background: var(--tint);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

.container {
  width: min(var(--max), calc(100% - 44px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 76px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  color: var(--ink);
  font: 800 1.65rem Manrope, sans-serif;
  letter-spacing: -0.08em;
}

.brand span {
  color: var(--teal);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.55rem;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--teal-dark);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 0.45rem 0.7rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(340px, 0.95fr);
  gap: 54px;
  align-items: center;
  padding: 90px 0 94px;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--teal);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lead {
  max-width: 650px;
  color: #39505e;
  font-size: 1.3rem;
  line-height: 1.5;
}

.hero-copy > p:not(.eyebrow):not(.lead) {
  max-width: 650px;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--teal);
  border-radius: 7px;
  background: var(--teal);
  color: #fff;
  padding: 0.78rem 1.1rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.button:hover {
  background: var(--teal-dark);
  text-decoration: none;
}

.button-quiet {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.button-quiet:hover {
  background: var(--tint);
  color: var(--ink);
}

.profile-card,
.info-card,
.topic-card,
.teaching-card,
.contact-panel > div {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.profile-card {
  padding: 28px;
  border-radius: 14px;
  box-shadow: 0 14px 38px #1b3a4a0b;
}

.profile-photo {
  display: block;
  width: 96px;
  height: 96px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  object-fit: cover;
  object-position: center 18%;
}

.profile-label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.tag-list,
.chips,
.pub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list {
  list-style: none;
  padding: 0;
}

.tag-list li,
.chips span,
.pub-tags a,
.pub-authorship,
.filter-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--tint);
  color: #3c5664;
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  white-space: nowrap;
}

.profile-rule {
  margin: 23px 0 16px;
  border-top: 1px solid var(--line);
}

.profile-meta {
  display: grid;
  gap: 12px;
}

.profile-meta-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  align-items: center;
  color: inherit;
}

.profile-meta-item span span {
  font-size: 0.9rem;
}

.profile-meta-icon,
.profile-social-link {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--tint);
  color: var(--teal-dark);
}

.profile-meta-icon svg,
.profile-social-link svg {
  width: 19px;
  height: 19px;
}

.profile-socials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.profile-social-link:hover,
.profile-meta-item:hover .profile-meta-icon {
  border-color: #bfd2d8;
  background: #fff;
  text-decoration: none;
}

.small {
  font-size: 0.88rem;
}

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

.section {
  padding-top: 76px;
  padding-bottom: 82px;
}

.section-tint {
  background: var(--tint);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 27px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.text-link {
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 700;
}

.card-grid,
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.info-card,
.topic-card {
  padding: 24px;
}

.topic-grid {
  margin: 0 0 30px;
}

.topic-grid-compact {
  margin-bottom: 24px;
}

.topic-card:hover {
  border-color: #bfd2d8;
  box-shadow: 0 8px 24px #1b3a4a0b;
  text-decoration: none;
}

.topic-card h2 {
  margin: 0.35rem 0 0.7rem;
  font-size: 1.22rem;
}

.topic-card p,
.info-card p,
.project-row p,
.page-lead,
.research-item p:not(.eyebrow),
.detail-list,
.timeline p,
.publication p:not(.authors):not(.venue),
.note-box span {
  color: var(--muted);
}

.card-number {
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.info-card > a {
  font-size: 0.88rem;
  font-weight: 700;
}

.project-row {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.project-mark {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--teal-dark);
  font: 800 1rem Manrope, sans-serif;
}

.note-box {
  display: grid;
  gap: 5px;
  margin-top: 36px;
  border-left: 3px solid var(--teal);
  background: var(--tint);
  padding: 20px 22px;
}

.note-box a {
  margin-top: 4px;
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 24px 0;
  font-size: 0.84rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}

.footer-inner a {
  color: var(--muted);
}

.page-content {
  min-height: 68vh;
  padding-top: 72px;
  padding-bottom: 90px;
}

.page-content > h1 {
  max-width: 900px;
  font-size: clamp(2.4rem, 5vw, 3.8rem);
}

.page-lead {
  max-width: 780px;
  margin-bottom: 42px;
  font-size: 1.18rem;
  line-height: 1.6;
}

.research-item {
  max-width: 880px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.research-item h2 {
  margin-bottom: 14px;
}

.related-work {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.skill-chip-groups {
  display: grid;
  gap: 16px;
}

.skill-chip-label {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tool-chips span {
  border-color: #d8d4f4;
  background: #f4f1ff;
  color: #4a3f82;
}

.related-work h3 {
  margin-bottom: 10px;
}

.related-work ul {
  margin: 0;
  padding-left: 18px;
}

.related-work li {
  margin: 0.35rem 0;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.method-grid p {
  font-size: 0.92rem;
}

.filter-toolbar {
  display: grid;
  gap: 14px;
  margin-bottom: 18px;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.filter-label {
  font-size: 0.9rem;
  font-weight: 700;
}

.filter-chip {
  cursor: pointer;
}

.filter-chip.is-active {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}

.filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-reset {
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  padding: 0.55rem 0.9rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
}

.filter-reset:hover {
  background: var(--tint);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: 28px 0 14px;
}

.filter-row label {
  font-size: 0.9rem;
  font-weight: 700;
}

.filter-row input {
  min-width: min(100%, 320px);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0.7rem 0.9rem;
  font: inherit;
}

.publication {
  display: grid;
  grid-template-columns: 75px 1fr;
  gap: 22px;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
}

.pub-year {
  padding-top: 5px;
  color: var(--teal);
  font: 700 1rem Manrope, sans-serif;
}

.publication h2 {
  margin: 0 0 0.5rem;
  font-size: 1.22rem;
}

.publication p {
  margin: 0.25rem 0;
}

.authors {
  font-size: 0.92rem;
}

.pub-meta-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.venue {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-style: italic;
}

.pub-authorship {
  color: var(--teal-dark);
  font-weight: 700;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.87rem;
  font-weight: 700;
}

.pub-link {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--tint);
  color: var(--teal-dark);
  padding: 0.45rem 0.8rem;
}

.pub-link:hover {
  border-color: #bfd2d8;
  background: #fff;
  text-decoration: none;
}

.empty-state {
  color: var(--muted);
  padding: 20px 0;
}

.teaching-card {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  max-width: 900px;
  padding: 28px;
}

.teaching-date,
.timeline-date {
  color: var(--teal);
  font-size: 0.88rem;
  font-weight: 700;
}

.teaching-card h2,
.contact-panel h2 {
  font-size: 1.35rem;
}

.timeline {
  max-width: 880px;
}

.timeline article {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.timeline h2 {
  margin: 0 0 7px;
  font-size: 1.2rem;
}

.timeline h3,
.cv-section h2 {
  margin: 0 0 7px;
}

.cv-layout {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-top: 34px;
}

.cv-sidebar {
  display: grid;
  gap: 20px;
  position: sticky;
  top: 96px;
}

.cv-main {
  display: grid;
  gap: 34px;
}

.cv-section {
  max-width: 920px;
}

.cv-list {
  margin: 0;
  padding-left: 18px;
}

.cv-list li,
.timeline li {
  margin: 0.45rem 0;
}

.cv-sidebar .info-card h2 {
  font-size: 1.28rem;
}

.tennis-photo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  max-width: 920px;
  margin-top: 20px;
}

.tennis-photo-placeholder {
  margin: 0;
}

.tennis-photo-box {
  display: grid;
  place-items: center;
  min-height: 280px;
  border: 1px dashed #bfd2d8;
  border-radius: 14px;
  background: var(--tint);
  color: var(--muted);
  font-weight: 700;
}

.tennis-photo-image {
  display: block;
  width: 100%;
  height: 320px;
  border: 1px solid var(--line);
  border-radius: 14px;
  object-fit: cover;
  object-position: center;
  background: var(--tint);
}

.tennis-photo-placeholder figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 850px;
}

.contact-panel > div {
  padding: 28px;
}

.social-list {
  margin: 0;
  padding-left: 18px;
}

.social-list li {
  margin: 0.4rem 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 20;
  background: #fff;
  padding: 8px;
}

.skip-link:focus {
  left: 8px;
}

@media (max-width: 760px) {
  .container {
    width: min(var(--max), calc(100% - 32px));
  }

  .site-header {
    height: 66px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 65px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    padding: 14px 22px 20px;
  }

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

  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 58px 0 62px;
  }

  .profile-card {
    max-width: 500px;
  }

  .section {
    padding-top: 55px;
    padding-bottom: 60px;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .method-grid,
  .contact-panel,
  .teaching-card,
  .cv-layout,
  .tennis-photo-grid,
  .timeline article,
  .publication {
    grid-template-columns: 1fr;
  }

  .publication {
    gap: 14px;
  }

  .page-content {
    padding-top: 52px;
    padding-bottom: 64px;
  }

  .cv-sidebar {
    position: static;
  }

  .footer-inner {
    flex-direction: column;
    gap: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}