@import url("https://fonts.googleapis.com/css2?family=Courier+Prime:wght@400;700&display=swap");

:root {
  --ink: #161918;
  --ink-soft: #293835;
  --muted: #56615f;
  --line: rgba(30, 91, 98, 0.18);
  --paper: #f5fbf9;
  --white: #ffffff;
  --teal: #6fb0a6;
  --teal-dark: #1e5b62;
  --claret: #8c314d;
  --wash: #e8f3f1;
  --rose-wash: #f6eaee;
  --shadow: 0 18px 50px rgba(30, 91, 98, 0.12);
  --expand-sticky-top: 8.5rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Courier Prime", "Courier New", Courier, monospace;
  font-size: 16px;
  line-height: 1.6;
}

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

a {
  color: var(--teal-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--claret);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--white);
  border-radius: 6px;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
  padding: 0.7rem 6vw;
  background: #050505;
  border-bottom: 1px solid rgba(111, 176, 166, 0.32);
  backdrop-filter: blur(16px);
}

.brand {
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.35rem 0.7rem;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  border-radius: 999px;
}

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

.nav a:hover {
  background: var(--claret);
}

.mobile-nav {
  display: none;
}

.hero-home {
  min-height: 72vh;
  display: grid;
  align-items: end;
  padding: 8rem 6vw 5rem;
  background-color: #eef2f5;
  background-image: url("chauplane-banner.jpg");
  background-size: cover;
  background-position: center 55%;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.hero-home::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 44rem 25rem at 20% 71%,
      rgba(247, 247, 244, 0.9) 0%,
      rgba(247, 247, 244, 0.78) 34%,
      rgba(247, 247, 244, 0.38) 55%,
      rgba(247, 247, 244, 0.08) 76%,
      rgba(247, 247, 244, 0) 100%
    ),
    linear-gradient(
      90deg,
      rgba(247, 247, 244, 0.2) 0%,
      rgba(247, 247, 244, 0.08) 27%,
      rgba(247, 247, 244, 0) 48%
    );
}

.hero-content {
  position: relative;
  width: min(760px, 100%);
  margin-left: 0;
}

.home-portrait {
  width: min(280px, 58vw);
  aspect-ratio: 1;
  object-fit: contain;
  margin: 0 auto 1.2rem;
}

.home-intro {
  text-align: center;
}

.home-intro .lead {
  margin-right: auto;
  margin-left: auto;
}

.eyebrow,
.section-kicker,
.paper-type {
  margin: 0 0 0.6rem;
  color: var(--claret);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.12;
}

h1 {
  font-size: 4.6rem;
  font-weight: 700;
}

.page-title {
  font-size: 3.3rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.05rem;
}

.lead {
  max-width: 760px;
  margin: 1.2rem 0 0;
  color: var(--ink-soft);
  font-size: 1.28rem;
}

.hero-home .lead,
.hero-home .subtle {
  color: var(--claret);
}

.hero-actions,
.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.68rem 1rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.button {
  color: var(--white);
  background: var(--teal-dark);
  border: 1px solid var(--teal-dark);
}

.button.secondary {
  color: var(--teal-dark);
  background: var(--white);
  border-color: rgba(30, 91, 98, 0.3);
}

.button:hover {
  color: var(--white);
  background: var(--claret);
  border-color: var(--claret);
}

.button.secondary:hover {
  color: var(--white);
  background: var(--claret);
  border-color: var(--claret);
}

.scholar-button {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  min-width: 44px;
  padding-right: 0;
  padding-left: 0;
}

.scholar-logo {
  display: block;
  width: 21px;
  height: auto;
}

.section,
.page-hero,
.site-footer {
  padding: 4.5rem 6vw;
}

.page-hero {
  min-height: auto;
  display: grid;
  align-items: center;
  background:
    linear-gradient(
      90deg,
      rgba(245, 251, 249, 0.9) 0%,
      rgba(245, 251, 249, 0.74) 38%,
      rgba(245, 251, 249, 0.36) 72%,
      rgba(245, 251, 249, 0.22) 100%
    ),
    url("chauplane-ridge-hero.jpg");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--line);
}

.page-hero .lead {
  max-width: 900px;
}

.page-hero .section-inner {
  width: 100%;
}

.section-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 3rem;
  align-items: start;
}

.sticky-actions {
  position: sticky;
  top: 64px;
  z-index: 9;
  padding: 0.75rem 6vw;
  background: rgba(245, 251, 249, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.cv-section h2 {
  margin-bottom: 1.1rem;
}

.cv-section h3 {
  margin-top: 1.35rem;
  margin-bottom: 0.35rem;
}

.cv-section p {
  margin: 0.25rem 0;
}

.sticky-actions .hero-actions {
  max-width: 1180px;
  margin: 0 auto;
}

.contact-list,
.clean-list,
.timeline,
.lecture-list,
.link-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list {
  display: grid;
  gap: 1rem;
}

.contact-list li,
.fact {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.contact-list strong,
.fact strong {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
}

.feature-band {
  background: var(--wash);
  color: var(--ink);
}

.feature-band h2,
.feature-band p {
  color: var(--ink);
}

.feature-band a:not(.button) {
  color: var(--teal-dark);
}

.feature-band a:not(.button):hover {
  color: var(--claret);
}

.feature-band .section-kicker {
  color: var(--claret);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(30, 91, 98, 0.18);
  border: 1px solid var(--line);
}

.feature-grid .fact {
  min-height: 150px;
  padding: 1.2rem;
  background: var(--white);
  border: 0;
}

.fact span {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
}

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

.paper-list {
  display: grid;
  gap: 1rem;
}

.paper {
  padding: 1.25rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal-dark);
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(30, 91, 98, 0.08);
}

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

.commute-lead {
  width: 100%;
  max-width: none;
  margin: 0 auto 1.35rem;
  text-align: center;
}

.media-card {
  background: var(--white);
  border: 1px solid var(--line);
}

.media-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.media-card figcaption {
  padding: 0.8rem;
  color: var(--ink-soft);
  font-weight: 700;
}

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

.video-card {
  background: var(--white);
  border: 1px solid var(--line);
}

.video-card iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}

.video-card h3 {
  padding: 0.8rem;
}

.paper h2,
.paper h3 {
  margin-bottom: 0.55rem;
}

.paper p {
  margin: 0.45rem 0;
}

.paper .authors {
  color: var(--ink-soft);
}

.paper .venue {
  color: var(--teal-dark);
  font-weight: 700;
}

.venue-journal {
  color: var(--claret);
}

.paper .copyright-line {
  margin-top: -0.2rem;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.35;
}

.paper .paper-note {
  color: var(--ink-soft);
  font-weight: 400;
}

.paper-type {
  color: var(--claret);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.85rem;
  align-items: flex-start;
}

.pill,
.inline-dropdown summary {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0.25rem 0.65rem;
  color: var(--teal-dark);
  background: var(--wash);
  border: 1px solid rgba(30, 91, 98, 0.22);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.pill:hover,
.inline-dropdown summary:hover {
  color: var(--white);
  background: var(--claret);
  border-color: var(--claret);
}

.inline-dropdown {
  display: inline-flex;
}

.inline-dropdown summary {
  cursor: pointer;
  list-style: none;
}

.inline-dropdown summary::-webkit-details-marker {
  display: none;
}

.inline-dropdown summary::marker {
  content: "";
}

.inline-dropdown[open] summary {
  color: var(--white);
  background: var(--claret);
  border-color: var(--claret);
}

.dropdown-slot {
  flex: 0 0 100%;
  order: 999;
}

.dropdown-slot[hidden],
.dropdown-panel[hidden] {
  display: none;
}

.dropdown-panel {
  position: relative;
  margin-top: 0.65rem;
  padding: 0.9rem 1rem;
  color: var(--ink-soft);
  background: #fbfefe;
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(30, 91, 98, 0.08);
}

.dropdown-panel p {
  margin: 0;
}

.dropdown-panel pre {
  margin: 0;
  padding-top: 1.9rem;
  overflow-x: auto;
  white-space: pre-wrap;
  color: var(--ink);
  font-family: "Courier Prime", "Courier New", Courier, monospace;
  font-size: 0.88rem;
  line-height: 1.5;
}

.copy-button {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  min-height: 28px;
  padding: 0.2rem 0.6rem;
  color: var(--white);
  background: var(--teal-dark);
  border: 1px solid var(--teal-dark);
  border-radius: 999px;
  cursor: pointer;
  font-family: "Courier Prime", "Courier New", Courier, monospace;
  font-size: 0.78rem;
  font-weight: 700;
}

.copy-button:hover {
  background: var(--claret);
  border-color: var(--claret);
}

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

.cv-profile {
  display: grid;
  justify-items: center;
  margin-bottom: 1.35rem;
}

.cv-portrait {
  width: min(280px, 58vw);
  aspect-ratio: 1;
  object-fit: contain;
  filter: drop-shadow(0 14px 24px rgba(30, 91, 98, 0.16));
}

.cv-info-card h2 {
  font-size: 1rem;
}

.cv-card-label {
  margin: 0 0 0.5rem;
  color: var(--claret);
  font-size: 0.98rem;
  font-weight: 700;
}

.cv-box-title {
  margin: 0 0 0.85rem;
  color: var(--claret);
  font-family: "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
}

.affiliation-heading {
  margin: 1rem 0 0.35rem;
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 700;
}

.cv-info-card .affiliation-heading {
  font-size: 1.32rem;
  line-height: 1.16;
}

.cv-info-card .affiliation-heading:first-child,
.cv-expand-content .affiliation-heading:first-child {
  margin-top: 0;
}

.cv-info-card h2 + .compact-list,
.cv-info-card .affiliation-heading + .compact-list {
  margin-top: 0.55rem;
}

.compact-list {
  display: grid;
  gap: 0.45rem;
  margin: 0.85rem 0 0;
  padding: 0;
  list-style: none;
}

.compact-list li {
  padding-left: 1rem;
  border-left: 3px solid var(--teal);
}

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

.cv-expand-card {
  position: relative;
  display: grid;
  align-self: start;
}

.cv-expand-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.cv-expand-content {
  grid-area: 1 / 1;
  position: relative;
  overflow: hidden;
  transition: max-height 180ms ease;
}

.cv-expand-content > .cv-box-title:first-child,
.cv-expand-content > h3:first-child {
  padding-right: 6.75rem;
}

.cv-expand-toggle:not(:checked) ~ .cv-expand-content {
  max-height: 13rem;
}

.cv-expand-toggle:checked ~ .cv-expand-content {
  max-height: 420rem;
}

.cv-expand-toggle:not(:checked) ~ .cv-expand-content::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 5rem;
  background: linear-gradient(rgba(255, 255, 255, 0), var(--white));
  pointer-events: none;
}

.expand-control {
  position: sticky;
  top: var(--expand-sticky-top);
  z-index: 4;
  grid-area: 1 / 1;
  justify-self: end;
  align-self: start;
  display: inline-flex;
  align-items: center;
  width: max-content;
  min-height: 32px;
  margin: 0 0 0.7rem 1rem;
  padding: 0.25rem 0.75rem;
  color: var(--white);
  background: var(--teal-dark);
  border: 1px solid var(--teal-dark);
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(30, 91, 98, 0.14);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 700;
}

.expand-control:hover {
  background: var(--claret);
  border-color: var(--claret);
}

.cv-expand-toggle:checked ~ .expand-control .more-label,
.cv-expand-toggle:not(:checked) ~ .expand-control .less-label {
  display: none;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-heading p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 0.8rem;
}

.timeline li {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline time {
  color: var(--claret);
  font-weight: 800;
}

.clean-list {
  display: grid;
  gap: 0.85rem;
}

.clean-list li {
  padding-left: 1rem;
  border-left: 3px solid var(--teal);
}

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

.course-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: start;
}

.lecture-list {
  display: grid;
  gap: 0.65rem;
}

.lecture-list li {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
}

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

.site-footer {
  background: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
}

@media (max-width: 960px) {
  h1 {
    font-size: 3.4rem;
  }

  .page-title {
    font-size: 2.6rem;
  }

  .split,
  .course-layout,
  .two-col {
    grid-template-columns: 1fr;
  }

  .paper-grid,
  .feature-grid,
  .media-grid,
  .video-grid,
  .cv-summary-grid,
  .cv-expand-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  :root {
    --expand-sticky-top: 13.75rem;
  }

  .site-header {
    position: sticky;
    top: 0;
    align-items: center;
    flex-direction: row;
    min-height: 58px;
  }

  .nav {
    display: none;
  }

  .mobile-nav {
    position: relative;
    display: block;
    margin-left: auto;
  }

  .mobile-nav summary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0.35rem 0.75rem;
    color: var(--white);
    background: #050505;
    border: 1px solid rgba(255, 255, 255, 0.86);
    border-radius: 999px;
    cursor: pointer;
    font-weight: 700;
    list-style: none;
  }

  .mobile-nav summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav summary::after {
    content: "";
    width: 0.45rem;
    height: 0.45rem;
    margin-left: 0.55rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-0.12rem) rotate(45deg);
  }

  .mobile-nav[open] summary {
    background: #050505;
    border-color: var(--white);
  }

  .mobile-nav[open] summary::after {
    transform: translateY(0.08rem) rotate(225deg);
  }

  .mobile-nav-panel {
    position: absolute;
    top: calc(100% + 0.55rem);
    right: 0;
    z-index: 30;
    display: grid;
    min-width: 11rem;
    padding: 0.45rem;
    background: #050505;
    border: 1px solid rgba(111, 176, 166, 0.38);
    border-radius: 8px;
    box-shadow: 0 18px 34px rgba(0, 0, 0, 0.28);
  }

  .mobile-nav-panel a {
    display: block;
    padding: 0.7rem 0.85rem;
    color: rgba(255, 255, 255, 0.84);
    text-decoration: none;
    border-radius: 6px;
  }

  .mobile-nav-panel a:hover,
  .mobile-nav-panel a.active {
    color: var(--white);
    background: var(--teal-dark);
  }

  .hero-home {
    min-height: 68vh;
    padding-top: 5rem;
    background-position: 36% center;
  }

  .page-hero {
    min-height: auto;
    background-position: 36% center;
  }

  .page-hero .section-inner {
    padding-left: 0;
  }

  .sticky-actions {
    top: 58px;
  }

  .hero-home::before {
    background:
      radial-gradient(
        ellipse 24rem 24rem at 34% 63%,
        rgba(247, 247, 244, 0.88) 0%,
        rgba(247, 247, 244, 0.72) 36%,
        rgba(247, 247, 244, 0.26) 62%,
        rgba(247, 247, 244, 0) 100%
      ),
      linear-gradient(
        90deg,
        rgba(247, 247, 244, 0.2) 0%,
        rgba(247, 247, 244, 0) 70%
      );
  }

  .hero-content {
    margin-left: 0;
  }

  h1,
  .page-title {
    font-size: 2.55rem;
  }

  h2 {
    font-size: 1.55rem;
  }

  .lead {
    font-size: 1.08rem;
  }

  .section,
  .page-hero,
  .site-footer {
    padding: 3rem 6vw;
  }

  .paper-grid,
  .feature-grid,
  .media-grid,
  .video-grid,
  .cv-summary-grid,
  .cv-expand-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

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