:root {
  --bg: #eef3f8;
  --card: #ffffff;
  --text: #001a35;
  --muted: #2e465f;
  --accent: #003b73;
  --accent-soft: #dce9f6;
  --warm: #914100;
  --warm-soft: #fff0d5;
  --warm-surface: #fff8eb;
  --warm-line: #d99a52;
  --line: #aebfd0;
  --shadow: 0 18px 45px rgba(0, 26, 53, 0.14);
  --radius: 22px;
  --max-width: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(11, 45, 92, 0.15), transparent 34%),
    radial-gradient(circle at top right, rgba(217, 154, 82, 0.16), transparent 30%),
    var(--bg);
  color: var(--muted);
  line-height: 1.65;
}

button,
select,
input,
textarea {
  font-family: inherit;
}

.icon-sprite {
  display: none;
}

a {
  color: var(--accent);
  font-family: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
select:focus-visible {
  outline: 3px solid #1976c5;
  outline-offset: 3px;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 22px 64px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 58px;
}

.brand {
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
  font-size: 1.15rem;
}

nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

nav a {
  color: var(--muted);
  font-weight: 650;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(240px, 0.55fr);
  gap: 28px;
  align-items: stretch;
  margin-bottom: 34px;
}

.hero-card,
.profile-box,
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-card {
  padding: 36px;
}

.hero > .hero-card,
.hero > .profile-box {
  height: 100%;
  min-height: 100%;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--warm-soft);
  color: var(--warm);
  border: 1px solid var(--warm-line);
  font-weight: 750;
  font-size: 0.83rem;
  margin-bottom: 18px;
}

.eyebrow-icon {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

h1 {
  color: var(--text);
  font-size: 4.35rem;
  line-height: 0.96;
  letter-spacing: 0;
  margin: 0 0 20px;
}

.subtitle {
  font-size: 1.04rem;
  line-height: 1.68;
  color: var(--muted);
  max-width: 760px;
  margin: 0;
}

.subtitle,
section p {
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.highlight {
  color: var(--text);
  font-weight: 760;
}

.subtitle strong,
.profile-box strong,
section p strong,
section li strong,
.news-table strong,
.award-list strong,
.service-list strong,
.teaching-list strong {
  color: var(--text);
  font-family: inherit;
  font-weight: 760;
}

.profile-meta strong,
.item-title {
  color: var(--text);
}

.subtitle a,
section p a,
section li a {
  font-family: inherit;
  font-weight: 760;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  font-weight: 750;
  font-size: 0.94rem;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

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

.button.primary:hover {
  background: #002b55;
  border-color: #002b55;
}

.button:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 22px rgba(7, 26, 51, 0.1);
  text-decoration: none;
  transform: translateY(-1px);
}

.profile-box {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  text-align: left;
}

.avatar {
  width: min(100%, 210px);
  aspect-ratio: 0.90;
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(11, 45, 92, 0.09), rgba(54, 96, 148, 0.06)),
    url("images/profile_photo.png");
  background-size: cover;
  background-position: center;
  margin: 0 auto 22px;
}

.profile-box p {
  margin: 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.profile-meta {
  width: 100%;
  margin-top: 0;
  display: grid;
  gap: 7px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--muted);
}

.profile-meta-group,
.profile-meta-focus {
  display: grid;
  gap: 2px;
}

.inline-logo-link {
  display: inline;
  vertical-align: baseline;
  white-space: normal;
}

.inline-logo-link img {
  display: inline-block;
  width: auto;
  height: 0.82em;
  margin-right: 3px;
  object-fit: contain;
  vertical-align: -0.06em;
}

.inline-logo-link[href*="comp.nus.edu.sg"] img {
  height: 0.9em;
}

section {
  margin-top: 26px;
  padding: 30px;
}

/* Quieter surfaces let the longer, information-dense sections breathe. */
#about,
#experience,
#service,
#teaching {
  background: #f8fbfe;
  border-color: #c6d3df;
  box-shadow: 0 12px 32px rgba(0, 26, 53, 0.09);
}

h2 {
  color: var(--text);
  margin: 0 0 18px;
  font-size: 1.38rem;
  letter-spacing: 0;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

section > .section-title {
  margin: -30px -30px 18px;
  padding: 14px 30px;
  background: linear-gradient(90deg, var(--warm-soft), var(--warm-surface));
  border-radius: var(--radius) var(--radius) 0 0;
}

section > .section-title .section-icon,
.section-heading-row .section-icon {
  color: var(--warm);
  background: var(--warm-surface);
  border-color: var(--warm-line);
}

.section-icon,
.news-entry-icon,
.award-icon {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--accent);
}

.news-entry-icon.acceptance {
  color: var(--warm);
  background: var(--warm-soft);
  border: 1px solid var(--warm-line);
}

.news-entry-icon.milestone {
  color: var(--accent);
  background: var(--accent-soft);
}

.section-icon {
  width: 34px;
  height: 34px;
  border: 1px solid #9db4ca;
  border-radius: 12px;
  background: var(--accent-soft);
}

.section-icon svg {
  width: 19px;
  height: 19px;
}

.news-entry-icon,
.award-icon {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--accent-soft);
}

.award-icon {
  color: var(--warm);
  background: var(--warm-soft);
  border: 1px solid var(--warm-line);
}

.news-entry-icon svg,
.award-icon svg {
  width: 16px;
  height: 16px;
}

.section-icon svg,
.news-entry-icon svg,
.award-icon svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

h3 {
  color: var(--text);
  margin: 0 0 8px;
  font-size: 1rem;
}

p {
  margin-top: 0;
}

.research-themes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.research-theme {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #ffffff;
}

.research-theme h3 {
  color: var(--accent);
  font-size: 1.02rem;
  margin-bottom: 9px;
}

.research-theme p {
  margin-bottom: 0;
  font-size: 0.93rem;
  line-height: 1.62;
  text-align: left;
  hyphens: none;
}

.research-convergence {
  margin: 16px 0 0;
  padding: 18px 20px;
  border-left: 4px solid var(--warm-line);
  border-radius: 0 14px 14px 0;
  background: #fffaf2;
  text-align: left;
  hyphens: none;
}




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

.timeline-item {
  display: grid;
  grid-template-columns: 150px 76px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.timeline-item > div:last-child {
  min-width: 0;
}

.timeline-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.date {
  color: var(--accent);
  font-weight: 800;
  font-size: 0.92rem;
}

.experience-logo {
  width: 76px;
  height: 50px;
  min-width: 76px;
  max-width: 76px;
  min-height: 50px;
  max-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
}

.experience-logo:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.experience-logo img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.item-title {
  font-weight: 800;
  margin-bottom: 2px;
}

.item-place {
  color: var(--muted);
  margin-bottom: 6px;
}

ul {
  padding-left: 20px;
  margin: 0;
}

li {
  margin-bottom: 10px;
}

.news-table-wrap {
  overflow-x: auto;
}

.news-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.96rem;
}

.news-table tr {
  border-top: 1px solid var(--line);
}

.news-table tr:first-child {
  border-top: 0;
}

.news-table th,
.news-table td {
  padding: 14px 0;
  text-align: left;
  vertical-align: top;
}

.news-table th {
  width: 128px;
  padding-right: 22px;
  color: var(--accent);
  font-weight: 850;
  white-space: nowrap;
}

.news-table td {
  color: var(--muted);
}

.news-entry {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: start;
}

.news-entry-content {
  display: block;
}

.news-highlight {
  display: inline-flex;
  align-items: center;
  margin-right: 8px;
  min-height: 25px;
  padding: 2px 9px;
  border: 1px solid var(--warm-line);
  border-radius: 999px;
  background: var(--warm-soft);
  color: var(--warm);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.award-list {
  padding-left: 22px;
  list-style: disc;
}

.award-list li {
  display: list-item;
  padding-left: 2px;
  margin-bottom: 10px;
  color: var(--muted);
}

.award-list li::marker {
  color: var(--warm);
}

footer {
  margin-top: 36px;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 800px) {
  header {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 38px;
  }

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

  .hero-card,
  .profile-box {
    padding: 28px;
  }

  h1 {
    font-size: 3rem;
  }

  .timeline-item {
    grid-template-columns: 70px minmax(0, 1fr);
    gap: 6px;
  }

  .research-themes {
    grid-template-columns: 1fr;
  }

  .timeline-item .date {
    grid-column: 1 / -1;
  }

  .experience-logo {
    width: 64px;
    height: 46px;
    min-width: 64px;
    max-width: 64px;
    min-height: 46px;
    max-height: 46px;
  }

  section {
    padding: 24px;
  }

}

.page-hero {
  padding: 40px;
}

.page-hero h1 {
  margin: -40px -40px 24px;
  padding: 18px 40px;
  background: linear-gradient(90deg, var(--warm-soft), var(--warm-surface));
  border-radius: var(--radius) var(--radius) 0 0;
}

.section-links {
  margin-top: 18px;
}

.paper-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.paper-card {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  scroll-margin-top: 24px;
}

.rich-paper-list .paper-card {
  display: grid;
  grid-template-columns: minmax(260px, 34%) 1fr;
  gap: 24px;
  align-items: center;
}

.paper-thumb {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  border: 1px solid var(--line);
  object-fit: contain;
  background: #eef3f8;
  padding: 10px;
}

.paper-thumb-fallback {
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: 900;
  font-size: 1.7rem;
}

.paper-title {
  font-weight: 850;
  letter-spacing: 0;
  line-height: 1.35;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.paper-authors {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.paper-authors strong {
  color: var(--text);
}

.paper-meta {
  color: var(--accent);
  font-weight: 800;
  font-size: 0.92rem;
  margin-bottom: 10px;
}

.paper-meta strong {
  color: inherit;
  font-weight: inherit;
}

.paper-tldr {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.paper-tldr strong {
  color: var(--text);
}

.paper-year {
  color: var(--muted);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.paper-links a {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 750;
}

.paper-links a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.note {
  color: var(--muted);
  margin-top: 18px;
}

.section-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: -30px -30px 18px;
  padding: 14px 30px;
  background: linear-gradient(90deg, var(--warm-soft), var(--warm-surface));
  border-radius: var(--radius) var(--radius) 0 0;
}

.section-heading-row h2 {
  margin-bottom: 0;
  padding: 0;
  background: none;
  border: 0;
  border-radius: 0;
}

.filter-control {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
}

.filter-control select {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font: inherit;
  padding: 6px 34px 6px 12px;
}

.compact-timeline {
  gap: 10px;
}

.compact-timeline .timeline-item {
  padding-top: 10px;
}

.compact-timeline .item-place {
  margin-bottom: 0;
}

@media (max-width: 800px) {
  section > .section-title,
  .section-heading-row {
    margin-top: -24px;
    margin-right: -24px;
    margin-left: -24px;
    padding-right: 24px;
    padding-left: 24px;
  }

  .section-heading-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .rich-paper-list .paper-card {
    grid-template-columns: 1fr;
  }

  .paper-thumb {
    max-height: 260px;
  }
}