@font-face {
  font-family: "Fraunces";
  src: url("fonts/fraunces-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/plex-mono-400-latin.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/plex-mono-500-latin.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --bg: #f7f3ea;
  --surface: #fdfbf6;
  --ink: #1b2633;
  --ink-soft: #4b5664;
  --line: #e2dacb;
  --accent: #2b6a66;
  --accent-strong: #1e504d;
  --accent-tint: #e3ece7;
  --on-accent: #fdfbf6;
  --todo-bg: #fff3c4;
  --todo-ink: #5f4200;
  --todo-line: #c99a06;

  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius: 16px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141b22;
    --surface: #1a232c;
    --ink: #ece6da;
    --ink-soft: #aab3bd;
    --line: #2b3643;
    --accent: #84c2ba;
    --accent-strong: #a6d6cf;
    --accent-tint: #1f3433;
    --on-accent: #10181d;
    color-scheme: dark;
  }
}

/* ---------- Base ---------- */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 1.0625rem/1.65 var(--sans);
}

h1, h2, h3, h4 { margin: 0; }

h1, h2, .brand, .project h3, .interest h3, .math-card h3, .panel h3, .sub-head, .email-big {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0; }

sup { font-size: 0.72em; line-height: 0; }

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

a:hover { color: var(--accent-strong); text-decoration-thickness: 2px; }

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

img { max-width: 100%; height: auto; }

.container {
  width: min(100% - 2.5rem, 72rem);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
}

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

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  min-height: 4rem;
}

.brand {
  color: var(--ink);
  font-size: 1.15rem;
  text-decoration: none;
}

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

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-list a {
  color: var(--ink-soft);
  text-decoration: none;
}

.nav-list a:hover { color: var(--ink); text-decoration: underline; }

.nav-list .nav-resume {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
}

.nav-list .nav-resume:hover,
.nav-list .nav-resume[aria-current="page"] {
  background: var(--accent);
  color: var(--on-accent);
  text-decoration: none;
}

section[id], [id^="project-"] { scroll-margin-top: 5rem; }

/* ---------- Shared pieces ---------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border: 1.5px solid var(--ink);
  border-radius: 10px;
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
}

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

.btn-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.btn-primary:hover { border-color: var(--accent-strong); background: var(--accent-strong); color: var(--on-accent); }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  background: var(--accent-tint);
  color: var(--accent-strong);
  font: 500 0.78rem/1.6 var(--mono);
}

.when {
  color: var(--ink-soft);
  font: 0.82rem/1.5 var(--mono);
  white-space: nowrap;
}

dl { margin: 0; }
dd { margin: 0; }

/* Placeholders for missing or unconfirmed content (see content.mjs) */

.todo {
  padding: 0.05rem 0.4rem;
  border: 1px dashed var(--todo-line);
  border-radius: 6px;
  background: var(--todo-bg);
  color: var(--todo-ink);
  font-size: 0.92em;
  font-family: var(--sans);
  font-weight: 400;
  letter-spacing: normal;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.todo-label { font-weight: 700; }

.unconfirmed {
  text-decoration: underline dotted var(--todo-line) 2px;
  text-underline-offset: 0.25em;
}

/* ---------- Introduction ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  align-items: end;
  gap: clamp(2rem, 5vw, 4.5rem);
  padding-block: clamp(3.5rem, 9vw, 7rem) clamp(3rem, 6vw, 5rem);
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--accent);
  font: 500 0.88rem/1.6 var(--mono);
}

.hero h1 {
  font-size: clamp(2.9rem, 7.5vw, 5.4rem);
  line-height: 1;
  letter-spacing: -0.025em;
}

.lede {
  max-width: 37rem;
  margin-top: 1.5rem;
  color: var(--ink-soft);
  font-size: clamp(1.1rem, 1.6vw, 1.22rem);
}

.hero .actions { margin-top: 2rem; }

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  font: 0.9rem/1.6 var(--mono);
}

.glance {
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.glance-title {
  margin-bottom: 0.5rem;
  color: var(--ink-soft);
  font: 500 0.78rem/1.6 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.glance dl > div {
  padding-block: 0.8rem;
  border-top: 1px solid var(--line);
}

.glance dt {
  color: var(--accent);
  font: 500 0.75rem/1.6 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.glance dd { margin-top: 0.1rem; line-height: 1.5; }

/* ---------- Sections ---------- */

.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
  border-top: 1px solid var(--line);
}

.section-head { margin-bottom: clamp(2rem, 4vw, 3rem); }

.section-num {
  margin-bottom: 0.35rem;
  color: var(--accent);
  font: 500 0.88rem/1.6 var(--mono);
}

.section-head h2 {
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  line-height: 1.1;
}

.section-intro {
  max-width: 40rem;
  margin-top: 0.85rem;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

/* ---------- Projects ---------- */

.project-list {
  display: grid;
  gap: 1.5rem;
}

.project {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  background: var(--surface);
}

.project:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }

.project.no-media { grid-template-columns: minmax(0, 1fr); }

.project-kicker {
  color: var(--ink-soft);
  font: 0.82rem/1.6 var(--mono);
}

.project h3 {
  margin-top: 0.4rem;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1.15;
}

.project-status {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.1rem 0.65rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font: 500 0.75rem/1.6 var(--mono);
}

.project-context {
  margin-top: 0.4rem;
  color: var(--ink-soft);
}

.project-facts {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.no-media .project-facts {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem 2.5rem;
}

.no-media .project-facts.two-col { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }

.project-facts dt {
  color: var(--accent);
  font: 500 0.75rem/1.6 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project-facts dd { margin-top: 0.3rem; }

.project-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  font-weight: 600;
}

.code-note {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.project-media {
  display: grid;
  place-items: center;
  min-height: 14rem;
  margin: 0;
  padding: 1.25rem;
  border-radius: 12px;
  background: var(--accent-tint);
}

.project-media figure { margin: 0; }

.project-media img {
  max-height: 32rem;
  border-radius: 8px;
}

.project-media figcaption {
  margin-top: 0.5rem;
  color: var(--ink-soft);
  font: 0.78rem/1.5 var(--mono);
  text-align: center;
}

.project > .project-media { align-self: center; }

/* Before/after images share one height, so a narrower output (e.g. after seam carving) looks narrower. */
.media-pair {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.media-pair img {
  height: clamp(8rem, 16vw, 13rem);
  width: auto;
  object-fit: contain;
}

.media-todo {
  border: 1.5px dashed var(--todo-line);
  background: var(--todo-bg);
  text-align: center;
}

.media-todo .todo { border: 0; background: none; }

/* ---------- Research interests ---------- */

.interest-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 2rem clamp(1.5rem, 4vw, 3rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.interest {
  padding-top: 1.25rem;
  border-top: 2px solid var(--accent);
}

.interest h3 { font-size: 1.45rem; }

.interest p {
  margin-top: 0.6rem;
  color: var(--ink-soft);
}

.interest-also {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.interest-also h3 {
  color: var(--ink-soft);
  font: 500 0.78rem/1.6 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.interest-also .tags li { font-size: 0.85rem; }

/* ---------- About & experience ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
}

.about-text > p {
  max-width: 36rem;
  font-size: 1.08rem;
}

.about-text > p + p { margin-top: 1rem; }

.math-card {
  margin-top: 2rem;
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.math-card h3 { font-size: 1.3rem; }

.math-card dl > div {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.math-card dt {
  color: var(--accent);
  font: 500 0.75rem/1.6 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.sub-head { font-size: 1.45rem; }

.exp-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.exp {
  padding-block: 1.25rem;
  border-top: 1px solid var(--line);
}

.exp:last-child { border-bottom: 1px solid var(--line); }

.exp-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.15rem 1rem;
}

.exp h4 {
  font-size: 1.05rem;
  font-weight: 650;
}

.exp-org {
  margin-top: 0.1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.exp-org + p { margin-top: 0.6rem; }

.exp .tags { margin-top: 0.75rem; }

/* ---------- Résumé & contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: 1.5rem;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.panel h3 { font-size: 1.45rem; }

.panel p { color: var(--ink-soft); }

.panel .actions { margin-top: auto; }

.email-big {
  font-size: clamp(1.3rem, 3vw, 1.65rem);
  overflow-wrap: anywhere;
}

.other-links {
  display: flex;
  gap: 1.25rem;
  font-weight: 600;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font: 0.82rem/1.6 var(--mono);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 2rem;
}

/* ---------- Résumé page ---------- */

.resume {
  max-width: 50rem;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.resume-head h1 {
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  line-height: 1.05;
}

.resume-sub {
  margin-top: 0.4rem;
  color: var(--accent);
  font-weight: 600;
}

.resume-contact {
  margin-top: 0.5rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.resume-head .actions { margin-top: 1.5rem; }

.resume section { margin-top: 2.5rem; }

.resume h2 {
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font: 500 0.8rem/1.6 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.entry + .entry { margin-top: 1.4rem; }

.entry-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0 1rem;
}

.entry h3 {
  font-size: 1.08rem;
  font-weight: 650;
}

.entry h4 {
  margin-top: 0.6rem;
  font-size: 0.98rem;
  font-weight: 600;
}

.entry .meta {
  margin-top: 0.1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.entry .detail { margin-top: 0.25rem; }
.entry .detail strong { font-weight: 600; }

.entry ul {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
}

.entry li + li { margin-top: 0.2rem; }
.entry li::marker { color: var(--accent); }

.award p { margin-top: 0.2rem; }

.skills {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 1.5rem;
}

.skills dt { font-weight: 600; }

/* ---------- Small screens ---------- */

@media (max-width: 56rem) {
  .hero, .about-grid, .project { grid-template-columns: minmax(0, 1fr); }
  .hero { align-items: start; }
}

@media (max-width: 40rem) {
  .site-header { position: static; }
  .header-inner { padding-block: 0.75rem; }
  .nav-list { gap: 0.25rem 0.9rem; font-size: 0.9rem; }
  .nav-list .nav-resume { padding: 0.2rem 0.7rem; }
  .skills { grid-template-columns: 1fr; gap: 0.1rem; }
  .skills dd + dt { margin-top: 0.6rem; }
}

/* ---------- Motion: only when the visitor hasn't asked for less ---------- */

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .btn, .project, .nav-list a, .brand {
    transition: color 0.15s, background-color 0.15s, border-color 0.15s, transform 0.15s;
  }
  .btn:hover { transform: translateY(-1px); }
}

/* ---------- Print: a compact one-page résumé (also builds the PDF) ---------- */

@page { size: letter; margin: 0.4in 0.5in; }

@media print {
  :root {
    --bg: #fff;
    --surface: #fff;
    --ink: #111;
    --ink-soft: #444;
    --line: #ccc;
    --accent: #111;
    --accent-strong: #111;
  }

  body { font-size: 9.4pt; line-height: 1.3; }

  .site-header, .site-footer, .skip-link, .screen-only { display: none; }

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

  .resume { width: auto; max-width: none; padding: 0; }

  .resume-head {
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--line);
    text-align: center;
  }

  .resume-head h1 { font-size: 21pt; }
  .resume-sub { margin-top: 0.15rem; font-size: 10.5pt; }
  .resume-contact { margin-top: 0.1rem; font-size: 9.4pt; }

  .resume section { margin-top: 0.35rem; }

  .resume h2 {
    margin-bottom: 0.3rem;
    padding-bottom: 0.1rem;
    color: var(--ink);
    font: 500 9.5pt/1.3 var(--sans);
    letter-spacing: 0.08em;
  }

  .entry { break-inside: avoid; }
  .entry + .entry { margin-top: 0.3rem; }
  .entry h3 { font-size: 10pt; }
  .entry h4 { margin-top: 0.15rem; font-size: 9.4pt; }
  .when { font: 9pt/1.3 var(--sans); }
  .entry .meta { margin: 0; font-size: 9pt; }
  .entry .detail { margin-top: 0.1rem; }
  .entry ul { margin-top: 0.1rem; padding-left: 1rem; }
  .entry li + li { margin-top: 0.05rem; }

  .skills { grid-template-columns: max-content auto max-content 1fr; gap: 0 0.75rem; }
  .skills dd + dt { margin-left: 1.25rem; }

  .award {
    display: grid;
    grid-template-columns: max-content 1fr max-content;
    align-items: baseline;
    column-gap: 0.6rem;
  }
  .award + .award { margin-top: 0.1rem; }
  .award .entry-head { display: contents; }
  .award h3 { grid-area: 1 / 1; }
  .award p { grid-area: 1 / 2; margin: 0; }
  .award .when { grid-area: 1 / 3; }
}