@font-face {
  font-family: "Inter";
  src: url("fonts/inter/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("fonts/inter/InterVariable-Italic.woff2") format("woff2");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --bg: #f7f9fb;
  --txt: #1f2937;
  --muted: #6b7280;
  --brand: #7b5bb3;
  --brand-2: #5d3f91;
  --card: #ffffff;
  --radius: 16px;
  --rule: #e5e7eb;
}

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

html,
body {
  background: var(--bg);
  color: var(--txt);
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a:hover {
  color: var(--brand-2);
  text-decoration: underline;
}

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

.text-blue-grey {
  color: var(--brand);
}

.fade-in {
  animation: fade-in 0.8s;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

img {
  max-width: 60%;
  height: auto;
}

.center {
  display: block;
  width: 50%;
  margin-right: auto;
  margin-left: auto;
}

.site-container {
  width: 100%;
  max-width: 1060px;
  margin-right: auto;
  margin-left: auto;
  padding-top: 0;
  padding-right: 16px;
  padding-left: 16px;
}

.main-wrap {
  max-width: 1020px;
  margin: 0 auto;
  padding: 40px 16px 32px;
}

.hero {
  background: var(--card);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.profile-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: 28px;
  align-items: center;
  text-align: left;
}

.profile-copy {
  min-width: 0;
}

.hero h1 {
  margin: 0 0 8px;
  font-weight: 800;
  letter-spacing: 0;
}

.bio-text {
  font-size: 18px;
  text-align: justify;
  text-align-last: left;
}

.bio-text p:last-child {
  margin-bottom: 0;
}

.profile-photo-wrap {
  width: 200px;
  aspect-ratio: 1;
  overflow: hidden;
  justify-self: end;
  border: 1px solid var(--rule);
  border-radius: 50%;
  box-shadow: 0 8px 22px rgba(31, 41, 55, 0.12);
}

.profile-photo {
  display: block;
  width: 100%;
  max-width: none;
  height: 100%;
  object-fit: cover;
}

.page-title {
  text-align: center;
}

.section-heading {
  margin: 24px 0 10px;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 4px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.profile-copy .btn-row {
  justify-content: center;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--card);
  color: var(--txt);
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--brand);
  color: var(--brand-2);
  box-shadow: 0 6px 18px rgba(31, 111, 235, 0.1);
}

.mySlides {
  display: none;
}

.carousel-slide {
  margin-top: 34px;
  text-align: center;
}

.carousel-image {
  display: block;
  width: min(48%, 360px);
  margin: 0 auto;
}

.carousel-caption {
  margin: 4px 0 0;
  opacity: 0.6;
}

.research-wrap {
  max-width: 940px;
}

.research-hero {
  padding: 40px 34px;
}

.research-header {
  margin-bottom: 30px;
  text-align: center;
}

.research-header .page-title {
  margin-bottom: 6px;
}

.research-title {
  text-wrap: balance;
}

.research-intro {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.research-section + .research-section {
  margin-top: 36px;
}

.research-section .section-heading {
  margin: 0 0 16px;
  font-size: 20px;
  letter-spacing: 3px;
}

.research-item {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

.research-item + .research-item {
  margin-top: 20px;
}

.research-section .research-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.paper-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.paper-title a {
  color: var(--txt);
  text-decoration: underline;
  text-decoration-color: rgba(96, 125, 139, 0.35);
  text-underline-offset: 4px;
}

.paper-title a:hover {
  color: var(--brand);
  text-decoration-color: currentColor;
}

.paper-authors {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.paper-meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.paper-abstract {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.65;
  text-align: justify;
  text-align-last: left;
}

.paper-abstract-label {
  font-weight: 700;
}

.thesis-note {
  font-style: italic;
}

.site-footer {
  margin-top: auto;
  padding: 32px 16px;
  text-align: center;
  background-color: rgb(246, 248, 250);
  opacity: 0.75;
}

.footer-icons {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: var(--card);
  color: var(--brand);
  text-decoration: none;
  transition: transform 0.12s, box-shadow 0.12s, border-color 0.12s;
}

.icon-btn:hover {
  transform: translateY(-1px);
  border-color: var(--brand);
  color: var(--brand);
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(31, 111, 235, 0.12);
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

.svg-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  max-width: none;
  flex: 0 0 auto;
  vertical-align: -0.125em;
  color: var(--brand);
  fill: currentColor;
}

.svg-icon use {
  fill: currentColor;
}

.icon-btn .svg-icon {
  width: 21px;
  height: 21px;
}

.fab-home .svg-icon {
  width: 20px;
  height: 20px;
}

.copyright {
  margin-top: 16px;
  color: var(--muted);
  font-size: 12px;
}

.copyright a {
  color: inherit;
  text-decoration: none;
}

.copyright a:hover {
  color: var(--brand);
  text-decoration: underline;
}

.fab-home {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1000;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: var(--card);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.fab-home:hover {
  transform: translateY(-1px);
  border-color: var(--brand);
  box-shadow: 0 14px 28px rgba(31, 111, 235, 0.18);
}

@media (max-width: 820px) {
  .site-container {
    max-width: 100%;
    padding-right: 0;
    padding-left: 0;
  }

  .main-wrap {
    width: 100%;
    max-width: 100%;
    padding: 24px 12px 28px;
  }

  .hero {
    width: 100%;
    max-width: 100%;
    padding: 28px 20px;
  }

  .profile-layout {
    grid-template-columns: 1fr;
    gap: 20px;
    min-width: 0;
  }

  .profile-photo-wrap {
    width: 176px;
    justify-self: center;
    order: -1;
  }

  .profile-photo {
    width: 100%;
  }

  .profile-copy h1 {
    text-align: center;
  }

  .bio-text {
    text-align: left;
  }

  .research-header {
    margin-bottom: 26px;
  }

  .research-section + .research-section {
    margin-top: 32px;
  }

  .paper-title {
    font-size: 18px;
  }

  .paper-authors,
  .paper-abstract {
    font-size: 15px;
  }

  .paper-meta {
    font-size: 14px;
  }

  .btn-row {
    gap: 10px;
  }

  .fab-home {
    right: 14px;
    bottom: 14px;
    width: 48px;
    height: 48px;
  }
}

@media (max-width: 540px) {
  .research-intro {
    display: none;
  }

  .research-title-separator {
    display: none;
  }

  .research-title-topic {
    display: block;
  }

  .main-wrap {
    padding-right: 10px;
    padding-left: 10px;
  }

  .hero {
    padding-right: 18px;
    padding-left: 18px;
  }

  .carousel-image {
    width: min(74%, 360px);
  }

  .btn-row {
    gap: 8px;
  }

  .btn {
    padding: 9px 12px;
  }
}