/* A dark name band up top over an editorial grid: section labels in a left
   rail, content on the right. */

@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  /* Static display cut (opsz 72, wght 480), Basic Latin only. */
  src: url("../fonts/newsreader-display.woff2") format("woff2");
}

@font-face {
  font-family: "Newsreader";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  /* Static text cut (opsz 20, wght 420), Basic Latin plus quotes and dashes. */
  src: url("../fonts/newsreader-text-italic.woff2") format("woff2");
}

@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("../fonts/source-sans-3.woff2") format("woff2");
}

:root {
  --bg: #fbfaf6;
  --surface: #ffffff;
  --ink: #15242b;
  --muted: #5c6c71;
  --accent: #1d6b61;
  --accent-soft: rgba(29, 107, 97, 0.09);
  --accent-line: rgba(29, 107, 97, 0.3);
  --warm: #9c5d12;
  --warm-soft: rgba(196, 128, 44, 0.14);
  --rule: #e2e7e2;
  --edge: #e3e8e4;
  --plate: #ffffff;
  --shadow: 0 1px 2px rgba(21, 36, 43, 0.04), 0 12px 30px -20px rgba(21, 36, 43, 0.3);
  --shadow-lift: 0 2px 6px rgba(21, 36, 43, 0.05), 0 24px 46px -22px rgba(21, 36, 43, 0.38);
  --bar: rgba(251, 250, 246, 0.8);

  /* The hero band is dark in both themes. */
  --band-top: #0a171b;
  --band-bottom: #0f3136;
  --band-glow: rgba(52, 140, 128, 0.3);
  --band-warm: rgba(214, 150, 72, 0.12);
  --band-ink: #f2f7f5;
  --band-muted: #a3c5bd;
  --band-edge: rgba(163, 197, 189, 0.32);

  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body: "Source Sans 3", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 70rem;
  --gutter: clamp(1rem, 4vw, 2.25rem);
  --rail: 13rem;
  --rail-gap: 3.5rem;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1316;
    --surface: #101b1f;
    --ink: #e4ecea;
    --muted: #98aba7;
    --accent: #7ccfbf;
    --accent-soft: rgba(124, 207, 191, 0.1);
    --accent-line: rgba(124, 207, 191, 0.36);
    --warm: #f0b56a;
    --warm-soft: rgba(240, 181, 106, 0.13);
    --rule: #1c292d;
    --edge: #1e2d31;
    --plate: #eef3f1;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 12px 32px -18px rgba(0, 0, 0, 0.75);
    --shadow-lift: 0 2px 6px rgba(0, 0, 0, 0.4), 0 26px 50px -22px rgba(0, 0, 0, 0.85);
    --bar: rgba(11, 19, 22, 0.78);
    --band-top: #060f12;
    --band-bottom: #0b262a;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0b1316;
  --surface: #101b1f;
  --ink: #e4ecea;
  --muted: #98aba7;
  --accent: #7ccfbf;
  --accent-soft: rgba(124, 207, 191, 0.1);
  --accent-line: rgba(124, 207, 191, 0.36);
  --warm: #f0b56a;
  --warm-soft: rgba(240, 181, 106, 0.13);
  --rule: #1c292d;
  --edge: #1e2d31;
  --plate: #eef3f1;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 12px 32px -18px rgba(0, 0, 0, 0.75);
  --shadow-lift: 0 2px 6px rgba(0, 0, 0, 0.4), 0 26px 50px -22px rgba(0, 0, 0, 0.85);
  --bar: rgba(11, 19, 22, 0.78);
  --band-top: #060f12;
  --band-bottom: #0b262a;
  color-scheme: dark;
}

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

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s, text-decoration-color 0.2s, opacity 0.2s;
}

a:hover {
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 100;
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
}

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

/* Top bar: transparent over the band, frosted once the band scrolls away. */

.topbar {
  position: absolute;
  inset: 0 0 auto;
  z-index: 50;
  color: var(--band-ink);
  transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
}

.js .topbar {
  position: fixed;
}

.topbar.is-solid {
  background: var(--bar);
  color: var(--ink);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
  box-shadow: 0 1px 0 var(--rule);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  height: 3.75rem;
}

.wordmark {
  margin-right: auto;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: -0.01em;
  color: inherit;
  text-decoration: none;
  visibility: hidden;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
}

.topbar.is-solid .wordmark {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.topnav {
  display: none;
  gap: 1.6rem;
}

.topnav a,
.topbar-cv {
  color: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  opacity: 0.8;
}

.topnav a:hover,
.topbar-cv:hover {
  opacity: 1;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar-cv {
  padding: 0.3rem 0.85rem;
  border: 1px solid currentColor;
  border-radius: 999px;
}

.theme-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  opacity: 0.85;
  cursor: pointer;
  transition: background-color 0.2s, opacity 0.2s;
}

.js .theme-toggle {
  display: inline-flex;
}

.theme-toggle:hover {
  opacity: 1;
  background: rgba(128, 128, 128, 0.16);
}

.theme-toggle svg {
  width: 1.15rem;
  height: 1.15rem;
}

.icon-sun {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun {
    display: block;
  }

  :root:not([data-theme="light"]) .icon-moon {
    display: none;
  }
}

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

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

/* Hero band */

.hero {
  color: var(--band-ink);
  background:
    radial-gradient(52rem 30rem at 76% 36%, var(--band-glow), transparent 68%),
    radial-gradient(36rem 22rem at 4% 112%, var(--band-warm), transparent 72%),
    linear-gradient(180deg, var(--band-top), var(--band-bottom));
}

.hero-inner {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: clamp(24rem, 56vh, 31rem);
  padding-block: 6rem 3.5rem;
}

.name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3.3rem, 1.6rem + 5.4vw, 6.4rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--band-ink);
}

.tagline {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.6rem;
  margin: 1.1rem 0 0;
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  line-height: 1.45;
  color: var(--band-muted);
}

.tagline .sep {
  opacity: 0.6;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

/* Pills: contact links in the band, paper and project links below. */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.36rem 0.85rem;
  border: 1px solid var(--accent-line);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--accent);
  text-decoration: none;
}

.pill:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.pill svg {
  flex: none;
  width: 1em;
  height: 1em;
}

.pill-hero {
  border-color: var(--band-edge);
  background: rgba(255, 255, 255, 0.04);
  color: var(--band-ink);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.pill-hero:hover {
  border-color: rgba(242, 247, 245, 0.65);
  background: rgba(255, 255, 255, 0.1);
}

/* Intro */

.intro {
  display: flow-root;
  padding-top: 2.25rem;
}

.portrait {
  position: relative;
  z-index: 3;
  float: right;
  display: block;
  width: 8.5rem;
  height: auto;
  aspect-ratio: 4 / 5;
  margin: -4.5rem 0 0.75rem 1.25rem;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 0 0 4px var(--bg), var(--shadow-lift);
}

.bio p {
  max-width: 38rem;
  margin: 0;
}

.bio p + p {
  margin-top: 1rem;
}

.bio .vision {
  clear: both;
  max-width: 37rem;
  margin-top: 2rem;
  padding-left: 1.25rem;
  border-left: 2px solid var(--accent);
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.2rem, 1.08rem + 0.45vw, 1.42rem);
  line-height: 1.5;
  color: var(--ink);
}

/* Sections */

.section {
  margin-top: clamp(3.5rem, 2rem + 4vw, 6rem);
  scroll-margin-top: 4.5rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1.6rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.65rem, 1.35rem + 1vw, 2.05rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
}

.stack {
  display: grid;
  gap: 1.75rem;
}

/* Entries */

.entry-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.15rem 1.25rem;
}

.entry-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 650;
  line-height: 1.35;
  text-wrap: balance;
}

.date {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.entry-meta {
  margin: 0.2rem 0 0;
  font-size: 0.97rem;
  color: var(--muted);
}

.entry-text {
  margin: 0.5rem 0 0;
}

.points {
  margin: 0.5rem 0 0;
  padding-left: 1.15rem;
}

.points li + li {
  margin-top: 0.25rem;
}

.points li::marker {
  color: var(--accent);
}

/* Timeline */

.timeline {
  display: grid;
  gap: 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tl-item {
  position: relative;
  padding-left: 1.9rem;
}

.tl-item:not(:last-child)::before {
  content: "";
  position: absolute;
  top: 1.2rem;
  bottom: -2.45rem;
  left: calc(0.35rem - 0.5px);
  width: 1px;
  background: var(--accent-line);
}

.tl-dot {
  position: absolute;
  top: 0.45rem;
  left: 0;
  width: 0.7rem;
  height: 0.7rem;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
}

.tl-item.is-current .tl-dot {
  background: var(--accent);
}

.tl-item.is-current .tl-dot::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.6s ease-out infinite;
}

@keyframes pulse {
  from {
    opacity: 0.45;
    transform: scale(1);
  }

  to {
    opacity: 0;
    transform: scale(2.8);
  }
}

/* Papers */

.papers {
  display: grid;
  gap: 1.4rem;
}

.paper {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  padding: 1.1rem;
  border: 1px solid var(--edge);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.35s, border-color 0.35s;
}

.paper:hover {
  transform: translateY(-3px);
  border-color: var(--accent-line);
  box-shadow: var(--shadow-lift);
}

.paper-figure {
  display: block;
  max-width: 13rem;
  aspect-ratio: 1 / 1;
  padding: 0.65rem;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: 12px;
  background: var(--plate);
}

.paper-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.paper:hover .paper-figure img {
  transform: scale(1.045);
}

.paper-body {
  min-width: 0;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.6rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.chip svg {
  width: 0.85em;
  height: 0.85em;
}

.chip-warm {
  background: var(--warm-soft);
  color: var(--warm);
}

.paper-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 650;
  line-height: 1.35;
  text-wrap: balance;
}

.paper-title a {
  color: var(--ink);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition: background-size 0.35s, color 0.2s;
}

.paper-title a:hover {
  color: var(--accent);
  background-size: 100% 1px;
}

.authors {
  margin: 0.35rem 0 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.authors strong {
  font-weight: 650;
  color: var(--ink);
}

sup {
  font-size: 0.7em;
  line-height: 0;
}

.summary {
  margin: 0.55rem 0 0;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.85rem 0 0;
  padding: 0;
  list-style: none;
}

.footnote {
  margin: 1.1rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Honors */

.honors {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.honor {
  min-width: 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule);
}

.honor-wide {
  grid-column: span 2;
}

.honor-rank {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 2rem + 1.4vw, 3.1rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.honor-rank .pre {
  margin-right: 0.3em;
  font-family: var(--font-mono);
  font-size: 0.32em;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.honor-rank .ord {
  margin-left: 0.04em;
  font-size: 0.42em;
  letter-spacing: 0;
  vertical-align: 0.95em;
}

.honor-event {
  margin: 0.6rem 0 0;
  font-weight: 650;
  line-height: 1.35;
}

.honor-meta {
  margin: 0.2rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Footer */

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-top: clamp(4rem, 3rem + 4vw, 7rem);
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--muted);
}

.footer p {
  margin: 0;
}

.to-top {
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
}

.to-top:hover {
  color: var(--accent);
}

/* Scroll reveal, set up by site.js. */

@media (prefers-reduced-motion: no-preference) {
  .reveal-ready .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
  }

  .reveal-ready .reveal.is-in {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tl-item.is-current .tl-dot::after {
    display: none;
  }
}

/* 404 */

.lost {
  max-width: 34rem;
  margin: 0 auto;
  padding: 18vh var(--gutter) 4rem;
}

.lost-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.lost-title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.6rem, 2rem + 3vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
}

.lost p {
  margin-top: 1.25rem;
}

/* Wider screens */

@media (min-width: 40rem) {
  .portrait {
    width: 10rem;
    margin-top: -5.5rem;
  }

  .paper {
    grid-template-columns: 11.5rem minmax(0, 1fr);
    gap: 1.5rem;
    padding: 1.25rem;
  }

  .honors {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 52rem) {
  .topnav {
    display: flex;
  }
}

@media (min-width: 64rem) {
  .hero-text {
    padding-left: calc(var(--rail) + var(--rail-gap));
  }

  .intro {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, 1fr);
    column-gap: var(--rail-gap);
    padding-top: 0;
  }

  .portrait {
    float: none;
    width: 100%;
    margin: -8rem 0 0;
  }

  .bio {
    padding-top: 2.5rem;
  }

  .section {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, 1fr);
    column-gap: var(--rail-gap);
    padding-top: 1.75rem;
    border-top: 1px solid var(--rule);
  }

  .section-head {
    position: sticky;
    top: 5.25rem;
    align-self: start;
    flex-direction: column;
    gap: 0.55rem;
    margin: 0;
    padding-top: 0;
    border-top: 0;
  }

  .paper {
    grid-template-columns: 12.5rem minmax(0, 1fr);
  }
}

/* Phones */

@media (max-width: 39.99rem) {
  .hero-inner {
    min-height: 25rem;
    padding-bottom: 5.25rem;
  }

  .tagline {
    flex-direction: column;
  }

  .tagline .sep {
    display: none;
  }

  .section-head {
    flex-wrap: wrap;
  }
}

@media print {
  .topbar,
  .skip-link,
  .to-top {
    display: none !important;
  }

  .hero {
    background: none;
    color: #000;
  }

  .hero-inner {
    min-height: 0;
    padding-block: 0 1rem;
  }

  .name,
  .tagline {
    color: #000;
  }

  .pill-hero {
    border-color: #999;
    color: #000;
  }

  .portrait {
    margin-top: 0;
  }

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

  .paper {
    box-shadow: none;
    break-inside: avoid;
  }
}