@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/Inter-Regular.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/Inter-Medium.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/Inter-SemiBold.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/Inter-Bold.woff2") format("woff2");
}

:root {
  --ink: #d8d8d2;
  --ink-dim: #9a9a93;
  --ink-faint: #6a6a63;
  --surface: #121214;
  --surface-raised: #1a1a1e;
  --rule: #2c2c30;
  --amber: #d99a4e;
  --amber-bright: #eab676;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --measure: 720px;
  --radius: 4px;
  --s1: 0.4rem;
  --s2: 0.8rem;
  --s3: 1.2rem;
  --s4: 2rem;
  --s5: 3.25rem;
}

/* Light mode for visitors who prefer it — paper, not neon. */
@media (prefers-color-scheme: light) {
  :root {
    --ink: #23231f;
    --ink-dim: #57574f;
    --ink-faint: #8a8a80;
    --surface: #f4f1ea;
    --surface-raised: #ebe7dd;
    --rule: #d9d3c6;
    --amber: #9a6b1f;
    --amber-bright: #7d5616;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--surface);
  margin: 0;
  padding: 0;
}

.shell {
  max-width: var(--measure);
  margin: 0 auto;
  padding: var(--s5) var(--s3);
}

a {
  color: var(--amber);
  text-decoration: none;
  text-underline-offset: 2px;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--amber-bright);
  text-decoration: underline;
}

strong {
  font-weight: 600;
  color: var(--ink);
}

/* ── Skip link ──────────────────────────────────────── */

.skip {
  position: absolute;
  top: -44px;
  left: 0.5rem;
  padding: 0.5rem 1rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  background: var(--amber);
  color: var(--surface);
  border-radius: var(--radius);
  z-index: 1000;
  transition: top 0.15s ease;
}

.skip:focus {
  top: 0.5rem;
  text-decoration: none;
}

/* ── Section headers: terminal prompt ───────────────── */

.section-head {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink-dim);
  margin: var(--s5) 0 var(--s3) 0;
  padding-bottom: var(--s1);
  border-bottom: 1px solid var(--rule);
}

.section-head::before {
  content: "~/" attr(data-path) " $ ";
  color: var(--amber);
}

/* ── Intro / hero ───────────────────────────────────── */

.intro {
  margin-bottom: var(--s4);
}

.portrait {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--s3);
  border: 1px solid var(--rule);
  filter: grayscale(0.2);
}

.name {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--s2) 0;
  color: var(--ink);
}

.cursor {
  display: inline-block;
  width: 0.6ch;
  height: 1.05em;
  margin-left: 0.15em;
  background: var(--amber);
  vertical-align: -0.12em;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
}

.role {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--ink-dim);
  margin: 0 0 var(--s3) 0;
}

.bio {
  color: var(--ink);
  margin: 0 0 var(--s2) 0;
}

/* ── Inline org logos ───────────────────────────────── */

.org-logo {
  height: 1em;
  width: auto;
  vertical-align: -0.12em;
  margin-right: 0.4em;
  display: inline-block;
}

.role .org-logo {
  height: 0.9em;
  margin-left: 0.25em;
  margin-right: 0;
}

@media (prefers-color-scheme: dark) {
  .org-logo {
    filter: invert(0.92) hue-rotate(180deg);
  }
}

/* ── Contact links ──────────────────────────────────── */

.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--s3);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface-raised);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.contact-link::before {
  content: "›";
  color: var(--amber);
  margin-right: 0.45em;
}

.contact-link:hover {
  border-color: var(--amber);
  color: var(--amber);
  text-decoration: none;
}

/* ── Topics (research interests) ────────────────────── */

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

.topic {
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 0.25rem 0.65rem;
  color: var(--ink-dim);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.topic::before {
  content: "#";
  color: var(--amber);
  margin-right: 0.15em;
}

/* ── Toolbelt (tech icons) ──────────────────────────── */

.toolbelt {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: var(--s3);
  padding-top: var(--s2);
  border-top: 1px dashed var(--rule);
}

.toolbelt img {
  height: 30px;
  width: auto;
  opacity: 0.8;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.toolbelt img:hover {
  opacity: 1;
  transform: translateY(-2px);
}

/* ── News log ───────────────────────────────────────── */

.log {
  list-style: none;
  padding: 0;
  margin: 0;
}

.log li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--s2);
  padding: var(--s1) 0;
  border-bottom: 1px solid var(--rule);
}

.log li:last-child {
  border-bottom: none;
}

.log-date {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
  padding-top: 0.15rem;
}

.log-text {
  color: var(--ink);
}

@media (max-width: 600px) {
  .log li {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}

/* ── Roles (experience) & degrees (education) ───────── */

.roles,
.degrees {
  list-style: none;
  padding: 0;
  margin: 0;
}

.roles > li,
.degrees > li {
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--rule);
}

.roles > li:last-child,
.degrees > li:last-child {
  border-bottom: none;
}

.role-line,
.degree-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--s2);
  margin-bottom: 0.15rem;
}

.role-org,
.degree-org {
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.role-org .org-logo,
.degree-org .org-logo {
  height: 1.05em;
  margin: 0;
}

.role-span,
.degree-span {
  font-family: var(--mono);
  color: var(--ink-faint);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.role-name,
.degree-name {
  color: var(--ink-dim);
  font-size: 0.95rem;
  margin: 0 0 0.3rem 0;
}

.role-note {
  color: var(--ink-faint);
  font-size: 0.85em;
}

.role-detail,
.degree-detail {
  color: var(--ink);
  font-size: 0.95rem;
  margin: 0;
}

.degree-verify {
  font-family: var(--mono);
  font-size: 0.78em;
  color: var(--ink-faint);
}

.degree-verify:hover {
  color: var(--amber);
}

@media (max-width: 600px) {
  .role-line,
  .degree-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }
}

/* ── Publications ───────────────────────────────────── */

#publications {
  counter-reset: paper;
}

.papers {
  list-style: none;
  padding: 0;
  margin: 0;
}

.papers > li {
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--rule);
  counter-increment: paper;
  position: relative;
  padding-left: 2.4rem;
}

.papers > li::before {
  content: "[" counter(paper) "]";
  position: absolute;
  left: 0;
  top: var(--s2);
  font-family: var(--mono);
  color: var(--amber);
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
}

.papers > li:last-child {
  border-bottom: none;
}

.papers-group {
  margin-top: var(--s3);
}

.papers-group > summary {
  cursor: pointer;
  font-family: var(--mono);
  color: var(--ink-dim);
  font-size: 0.9rem;
  padding: var(--s1) 0;
  user-select: none;
  list-style: none;
}

.papers-group > summary::-webkit-details-marker {
  display: none;
}

.papers-group > summary::before {
  content: "▸ ";
  color: var(--amber);
}

.papers-group[open] > summary::before {
  content: "▾ ";
}

.paper-title {
  font-weight: 500;
  font-size: 1rem;
  color: var(--ink);
  display: inline-block;
  margin-bottom: 0.2rem;
}

.paper-title:hover {
  color: var(--amber);
}

.paper-authors {
  color: var(--ink-dim);
  font-size: 0.9rem;
  margin: 0 0 0.2rem 0;
}

.paper-meta,
.talk-meta {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin: 0;
  font-size: 0.82rem;
}

.paper-venue {
  display: inline-block;
  font-family: var(--mono);
  padding: 0.1rem 0.5rem;
  background: var(--surface-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--ink-dim);
}

.paper-year {
  font-family: var(--mono);
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

/* ── Talks ──────────────────────────────────────────── */

.talks {
  list-style: none;
  padding: 0;
  margin: 0;
}

.talks > li {
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--rule);
}

.talks > li:last-child {
  border-bottom: none;
}

.talk-title {
  font-weight: 500;
  font-size: 1rem;
  color: var(--ink);
  display: inline-block;
  margin-bottom: 0.2rem;
}

.talk-title:hover {
  color: var(--amber);
}

.note {
  font-family: var(--mono);
  color: var(--ink-faint);
  font-style: italic;
}

/* ── Projects ───────────────────────────────────────── */

.projects {
  list-style: none;
  padding: 0;
  margin: 0;
}

.projects > li {
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--rule);
}

.projects > li:last-child {
  border-bottom: none;
}

.project-title {
  font-weight: 600;
  font-size: 1rem;
  display: inline-block;
  margin-bottom: 0.2rem;
}

.project-title::before {
  content: "./";
  font-family: var(--mono);
  color: var(--amber);
  font-weight: 400;
}

.project-detail {
  color: var(--ink-dim);
  font-size: 0.95rem;
  margin: 0;
}

/* ── Footer ─────────────────────────────────────────── */

.footer {
  margin-top: var(--s5);
  padding-top: var(--s3);
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  color: var(--ink-faint);
  font-size: 0.8rem;
  text-align: center;
}

.footer p {
  margin: 0;
}

/* ── Mobile ─────────────────────────────────────────── */

@media (max-width: 600px) {
  .shell {
    padding: var(--s4) var(--s2);
  }
  .name {
    font-size: 1.7rem;
  }
}

/* ── Print ──────────────────────────────────────────── */

@media print {
  :root {
    --ink: #000;
    --ink-dim: #333;
    --ink-faint: #555;
    --surface: #fff;
    --surface-raised: #fff;
    --rule: #ccc;
    --amber: #000;
    --amber-bright: #000;
  }
  body {
    font-size: 11pt;
    line-height: 1.45;
  }
  .shell {
    max-width: 100%;
    padding: 0;
  }
  .contact,
  .toolbelt,
  .skip,
  .cursor,
  .footer {
    display: none;
  }
  a {
    color: #000;
    text-decoration: none;
  }
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
    color: #555;
    word-break: break-all;
  }
  .section-head {
    page-break-after: avoid;
  }
  .roles > li,
  .degrees > li,
  .papers > li,
  .talks > li,
  .projects > li {
    page-break-inside: avoid;
  }
  .portrait {
    width: 80px;
    height: 80px;
  }
}