/* Ezekiel Yeo — site styles. One file, no framework. */

@font-face {
  font-family: "Newsreader";
  src: url("/assets/fonts/newsreader-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("/assets/fonts/newsreader-latin-wght-italic.woff2") format("woff2");
  font-weight: 200 800;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---- Tokens ---- */
:root {
  --paper: #f7f5f0;
  --paper-2: #efece5;
  --ink: #1b1c1a;
  --ink-2: #4a4c48;
  --muted: #74766f;
  --rule: #dcd8ce;
  --accent: #1f5e4f;
  --accent-soft: #e2ece7;

  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --wrap: 66rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --label: 11rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #141513;
    --paper-2: #1c1d1b;
    --ink: #ecebe6;
    --ink-2: #c3c2bb;
    --muted: #8f918a;
    --rule: #2e302c;
    --accent: #8fd0b9;
    --accent-soft: #1d2b26;
  }
}

/* ---- Base ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 1.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--sans);
  font-feature-settings: "cv11", "ss01";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { margin: 0; font-weight: 500; line-height: 1.2; }
p, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration-color: color-mix(in srgb, var(--accent) 55%, transparent); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--accent); text-decoration-color: currentColor; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
strong { font-weight: 600; }
::selection { background: var(--accent-soft); }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--ink); color: var(--paper); padding: 0.5rem 0.75rem; z-index: 10; }

.eyebrow {
  font: 500 0.75rem/1.4 var(--sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow a { text-decoration: none; }

/* ---- Masthead ---- */
.masthead { border-bottom: 1px solid var(--rule); }
.masthead__inner { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem 2rem; padding-block: 1.1rem; }
.wordmark { font: 500 1.25rem/1 var(--serif); text-decoration: none; letter-spacing: -0.01em; }
.nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; font-size: 0.9375rem; }
.nav a { text-decoration: none; color: var(--ink-2); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); }

/* ---- Hero ---- */
.hero { padding-block: clamp(3.5rem, 10vw, 7rem) clamp(2.5rem, 6vw, 4rem); }
.hero__name {
  margin-top: 1.25rem;
  font: 400 clamp(3rem, 9vw, 5.75rem)/0.95 var(--serif);
  letter-spacing: -0.035em;
}
.hero__aka { margin-top: 0.9rem; color: var(--muted); font-size: 0.9375rem; }
.hero__lede {
  margin-top: 2rem;
  max-width: 30ch;
  font: 400 clamp(1.4rem, 3vw, 2rem)/1.3 var(--serif);
  letter-spacing: -0.01em;
  color: var(--ink-2);
}
.hero__actions { margin-top: 2.25rem; display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.75rem; }

.button {
  display: inline-block;
  padding: 0.7rem 1.15rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: 3px;
  font-weight: 500;
  font-size: 0.9375rem;
  text-decoration: none;
}
.button:hover { background: var(--accent); color: var(--paper); }
.textlink { font-weight: 500; font-size: 0.9375rem; text-decoration: none; color: var(--accent); }
.textlink:hover { text-decoration: underline; }

.figures {
  margin-top: clamp(3rem, 8vw, 5rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
}
.figures > div { display: flex; flex-direction: column-reverse; justify-content: flex-end; gap: 0.35rem; padding: 1rem 1rem 0 0; }
.figures > div + div { padding-left: 1rem; border-left: 1px solid var(--rule); }
.figures dd { margin: 0; font: 400 clamp(2.25rem, 6vw, 3.5rem)/1 var(--serif); letter-spacing: -0.03em; }
.figures dt { font-size: 0.8125rem; color: var(--muted); line-height: 1.35; }

/* ---- Sections: label in the left column, content on the right ---- */
.section {
  display: grid;
  grid-template-columns: var(--label) minmax(0, 1fr);
  gap: 1rem 3rem;
  padding-block: clamp(2.5rem, 6vw, 3.75rem);
  /* Hairline divider aligned with the content edges, not the page gutter. */
  background: linear-gradient(var(--rule), var(--rule)) no-repeat center top / calc(100% - 2 * var(--gutter)) 1px;
}
.section__label {
  font: 500 0.75rem/1.6 var(--sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.3rem;
}
.section__body { max-width: 46rem; }
.section__body h3 { font: 500 1.25rem/1.3 var(--serif); letter-spacing: -0.005em; }

.prose p + p { margin-top: 1.1em; }
.prose a { color: var(--accent); }
#about .prose { font: 400 1.25rem/1.6 var(--serif); color: var(--ink); }

/* Focus areas */
.focus { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 2.5rem; }
.focus p { margin-top: 0.4rem; color: var(--ink-2); font-size: 0.975rem; }

/* Timeline (experience, education) */
.timeline { display: grid; gap: 2.25rem; }
.timeline__item { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); gap: 0.25rem 1.5rem; }
.timeline__dates { font-size: 0.875rem; color: var(--muted); padding-top: 0.25rem; font-variant-numeric: tabular-nums; }
.timeline__org { color: var(--ink-2); margin-top: 0.15rem; }
.timeline__detail { margin-top: 0.6rem; color: var(--ink-2); font-size: 0.975rem; }
.points { margin-top: 0.75rem; display: grid; gap: 0.4rem; }
.points li { position: relative; padding-left: 1.1rem; color: var(--ink-2); font-size: 0.975rem; }
.points li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 0.45rem; height: 1px; background: var(--muted); }

/* Publications */
.pubs { display: grid; gap: 1.6rem; }
.pubs + p { margin-top: 2rem; }
.pub__title { font: 400 1.175rem/1.38 var(--serif); }
.pub__title a { text-decoration: none; }
.pub__title a:hover { text-decoration: underline; }
.pub__authors { margin-top: 0.3rem; font-size: 0.875rem; color: var(--ink-2); }
.pub__authors strong { color: var(--ink); }
.pub__meta { margin-top: 0.3rem; font-size: 0.875rem; color: var(--muted); }
.pub__venue { font-style: italic; }
.pub__note { margin-top: 0.45rem; font-size: 0.95rem; color: var(--ink-2); }
.tag {
  display: inline-block;
  padding: 0.05rem 0.45rem;
  border-radius: 2px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 500;
  font-style: normal;
}

/* Credentials */
.columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; max-width: none; }
.columns h3 { font-size: 1.05rem; margin-bottom: 0.6rem; }
.plain { display: grid; gap: 0.35rem; font-size: 0.95rem; color: var(--ink-2); }

/* Essays */
.essays { display: grid; gap: 1.5rem; }
.essays + p { margin-top: 2rem; }
.essays a { font: 400 1.35rem/1.3 var(--serif); text-decoration: none; letter-spacing: -0.005em; }
.essays a:hover { text-decoration: underline; }
.essays p { margin-top: 0.25rem; color: var(--ink-2); font-size: 0.975rem; }
.essays--full { gap: 2.25rem; }

/* Contact */
.contact__lede { font: 400 1.25rem/1.5 var(--serif); max-width: 34ch; }
.contact__email {
  display: inline-block;
  margin-top: 1.25rem;
  font: 400 clamp(1.6rem, 5vw, 2.6rem)/1.15 var(--serif);
  letter-spacing: -0.02em;
  color: var(--accent);
  overflow-wrap: anywhere;
}
.section--contact .inline-links { margin-top: 1.5rem; }

.inline-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; font-size: 0.9375rem; }

/* ---- Inner page header ---- */
.pagehead { padding-block: clamp(3rem, 8vw, 5.5rem) clamp(2rem, 5vw, 3rem); }
.pagehead h1 { margin-top: 1rem; font: 400 clamp(2.4rem, 6vw, 4rem)/1.02 var(--serif); letter-spacing: -0.03em; max-width: 18ch; }
.pagehead__lede { margin-top: 1.5rem; max-width: 44rem; font: 400 1.25rem/1.55 var(--serif); color: var(--ink-2); }
.pagehead__lede a { color: var(--accent); }
.chips { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chips a {
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 0.8125rem;
  text-decoration: none;
  color: var(--ink-2);
}
.chips a:hover { border-color: var(--accent); color: var(--accent); }

/* Apps */
.apps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem; max-width: none; }
.app p { margin-top: 0.5rem; color: var(--ink-2); font-size: 0.975rem; }
.app__platform { font: 500 0.75rem/1 var(--sans); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin-left: 0.4rem; vertical-align: 0.2em; }
.app .app__stack { font-size: 0.8125rem; color: var(--muted); }
.app .inline-links { margin-top: 0.75rem; }
.app .inline-links a { color: var(--accent); }

/* ---- Essay page ---- */
.post { max-width: calc(42rem + 2 * var(--gutter)); padding-block: clamp(3rem, 8vw, 5.5rem) 4rem; }
.post__head h1 { margin-top: 1rem; font: 400 clamp(2.2rem, 6vw, 3.4rem)/1.05 var(--serif); letter-spacing: -0.03em; }
.post__dek { margin-top: 1rem; font: italic 400 1.35rem/1.45 var(--serif); color: var(--ink-2); }
.post__meta { margin-top: 1.25rem; font-size: 0.875rem; color: var(--muted); }
.post__meta a { color: var(--muted); }
.prose--post { margin-top: 2.75rem; font: 400 1.2rem/1.7 var(--serif); }
.prose--post h2 { margin: 2.4em 0 0.6em; font: 600 1.05rem/1.3 var(--sans); letter-spacing: 0; }
.prose--post p, .prose--post ul, .prose--post ol, .prose--post blockquote { margin: 0 0 1.1em; }
.prose--post ul { padding-left: 1.2em; list-style: disc; }
.prose--post ol { padding-left: 1.4em; list-style: decimal; }
.prose--post li + li { margin-top: 0.4em; }
.prose--post blockquote { border-left: 2px solid var(--accent); padding-left: 1rem; color: var(--ink-2); }
.prose--post h2#references ~ ul, .prose--post h2:last-of-type + ul { font: 400 0.875rem/1.5 var(--sans); color: var(--ink-2); overflow-wrap: anywhere; }
.post__foot { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); display: grid; gap: 0.5rem; font-size: 0.9375rem; color: var(--ink-2); }

/* ---- Footer ---- */
.footer { border-top: 1px solid var(--rule); margin-top: 2rem; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; padding-block: 2rem 2.5rem; font-size: 0.875rem; color: var(--muted); }
.footer a { color: var(--ink-2); }

/* ---- Small screens ---- */
@media (max-width: 760px) {
  .section { grid-template-columns: minmax(0, 1fr); gap: 1.25rem; }
  .focus, .apps, .columns { grid-template-columns: minmax(0, 1fr); }
  .timeline__item { grid-template-columns: minmax(0, 1fr); }
  .timeline__dates { padding-top: 0; }
  .figures dd { font-size: 2.25rem; }
  #about .prose { font-size: 1.15rem; }
}
@media (max-width: 420px) {
  .figures { grid-template-columns: minmax(0, 1fr); }
  .figures > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); padding-bottom: 1rem; }
  .figures > div { flex-direction: row-reverse; justify-content: space-between; align-items: baseline; padding: 0.75rem 0; }
}

/* ---- Print: the homepage doubles as a CV (File → Print → Save as PDF) ---- */
@media print {
  @page { size: A4; margin: 14mm 15mm; }
  :root { --paper: #fff; --ink: #000; --ink-2: #222; --muted: #555; --rule: #ccc; --accent: #000; --accent-soft: #eee; --label: 6.5rem; }
  html { font-size: 11px; }
  body { line-height: 1.45; }
  .masthead, .hero__actions, .skip, .footer, .chips, .hero__lede { display: none; }
  .section:has(#focus-h), .section:has(#writing-h), .pubs + p { display: none; }
  .hero { padding-block: 0 0.5rem; }
  .hero__name { margin-top: 0.4rem; font-size: 2.6rem; }
  .hero__aka { margin-top: 0.3rem; }
  .figures { margin-top: 0.9rem; grid-template-columns: repeat(3, 1fr); }
  .figures > div { flex-direction: column-reverse; padding: 0.5rem 1rem 0 0; }
  .figures > div + div { padding-left: 1rem; border-left: 1px solid var(--rule); border-top: 0; }
  .figures dd { font-size: 1.8rem; }
  .section { background-image: none; border-top: 1px solid var(--rule); padding-block: 0.8rem; grid-template-columns: var(--label) minmax(0, 1fr); gap: 1.25rem; }
  .section__body { max-width: none; }
  #about .prose { font-size: 1.1rem; line-height: 1.5; }
  .timeline { gap: 0.9rem; }
  .timeline__item { grid-template-columns: 8rem minmax(0, 1fr); gap: 0 1rem; }
  .timeline__dates { padding-top: 0.15rem; }
  .points { margin-top: 0.3rem; gap: 0.15rem; }
  .pubs { gap: 0.6rem; }
  .pub__note { display: none; }
  .columns { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .timeline__item, .pub, .columns > div { break-inside: avoid; }
  .contact__lede { display: none; }
  .contact__email { margin-top: 0; font-size: 1.3rem; }
  .section--contact .inline-links { margin-top: 0.4rem; }
  a { text-decoration: none; }
}