/* George Katakalos — personal site
   No build step, no external fonts or scripts: deploys as-is to Cloudflare Pages. */

:root {
  --paper: #f7f5f0;
  --paper-2: #efece4;
  --ink: #1b1d1f;
  --ink-2: #4a4f55;
  --ink-3: #767c83;
  --rule: #d9d4c8;
  --accent: #0e5c58;
  --accent-ink: #ffffff;
  --accent-soft: #dcebe8;
  --code-bg: #ebe7dd;
  --serif: "Iowan Old Style", "Charter", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  --measure: 68ch;
  --wide: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131516;
    --paper-2: #1b1e20;
    --ink: #ecebe6;
    --ink-2: #b9bbb8;
    --ink-3: #8b8f90;
    --rule: #2e3335;
    --accent: #5fc2b8;
    --accent-ink: #0b1312;
    --accent-soft: #173431;
    --code-bg: #1f2426;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--paper); padding: .5rem .75rem; z-index: 10; }

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 1.5rem; }

/* ---------- header ---------- */
.site-header { border-bottom: 1px solid var(--rule); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: 1rem; padding-bottom: 1rem; }
.brand { font-family: var(--serif); font-size: 1.15rem; color: var(--ink); text-decoration: none; letter-spacing: .01em; }
.brand b { font-weight: 600; }
.nav { display: flex; gap: 1.25rem; flex-wrap: wrap; font-size: .92rem; }
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }

/* ---------- hero ---------- */
.hero { padding: 5.5rem 0 4rem; border-bottom: 1px solid var(--rule); }
.eyebrow { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 1.25rem; }
.hero h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(2.4rem, 5.4vw, 4.1rem); line-height: 1.05; letter-spacing: -.015em; margin: 0 0 1.5rem; max-width: 18ch; }
.hero h1 em { font-style: italic; color: var(--accent); }
.lede { font-size: 1.2rem; color: var(--ink-2); max-width: 58ch; margin: 0 0 2rem; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; }
.btn { display: inline-block; padding: .7rem 1.15rem; border: 1px solid var(--ink); color: var(--ink); text-decoration: none; font-size: .95rem; border-radius: 2px; }
.btn:hover { background: var(--ink); color: var(--paper); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); background: var(--accent); color: var(--accent-ink); }

.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 3.5rem; border-top: 1px solid var(--rule); }
.facts div { padding: 1.1rem 1rem 0 0; }
.facts dt { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.facts dd { margin: .3rem 0 0; font-family: var(--serif); font-size: 1.15rem; }

/* ---------- sections ---------- */
section.block { padding: 4.5rem 0; border-bottom: 1px solid var(--rule); }
.section-head { display: grid; grid-template-columns: 220px 1fr; gap: 2rem; align-items: baseline; }
.section-head h2 { font-family: var(--serif); font-weight: 500; font-size: 1.6rem; margin: 0; }
.section-head .kicker { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 .35rem; }
.section-body { max-width: var(--measure); }
.section-body p:first-child { margin-top: 0; }

/* focus cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin-top: 2.5rem; }
.card { background: var(--paper); padding: 1.6rem 1.5rem; }
.card h3 { font-family: var(--serif); font-weight: 500; font-size: 1.2rem; margin: 0 0 .6rem; }
.card p { margin: 0; color: var(--ink-2); font-size: .97rem; }
.card .num { font-family: var(--mono); font-size: .8rem; color: var(--accent); display: block; margin-bottom: 1rem; }

/* experience */
.roles { list-style: none; margin: 2.5rem 0 0; padding: 0; }
.role { display: grid; grid-template-columns: 220px 1fr; gap: 2rem; padding: 1.6rem 0; border-top: 1px solid var(--rule); }
.role:first-child { border-top: 0; padding-top: 0; }
.role .when { font-family: var(--mono); font-size: .85rem; color: var(--ink-3); padding-top: .2rem; }
.role h3 { font-family: var(--serif); font-weight: 500; font-size: 1.25rem; margin: 0; }
.role .org { color: var(--ink-2); margin: .1rem 0 .7rem; }
.role ul { margin: 0; padding-left: 1.1rem; color: var(--ink-2); }
.role li { margin: .25rem 0; }

/* projects */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-top: 2.5rem; }
.project { border: 1px solid var(--rule); padding: 1.5rem; background: var(--paper); }
.project h3 { font-family: var(--serif); font-weight: 500; font-size: 1.2rem; margin: 0 0 .25rem; }
.project .stack { font-family: var(--mono); font-size: .78rem; color: var(--ink-3); margin: 0 0 .8rem; }
.project p { margin: 0; color: var(--ink-2); font-size: .97rem; }

/* writing list */
.posts { list-style: none; padding: 0; margin: 2.5rem 0 0; }
.posts li { border-top: 1px solid var(--rule); }
.posts li:last-child { border-bottom: 1px solid var(--rule); }
.posts a { display: grid; grid-template-columns: 220px 1fr auto; gap: 2rem; padding: 1.4rem 0; text-decoration: none; color: var(--ink); align-items: baseline; }
.posts a:hover h3 { color: var(--accent); }
.posts time, .posts .tag { font-family: var(--mono); font-size: .82rem; color: var(--ink-3); }
.posts h3 { font-family: var(--serif); font-weight: 500; font-size: 1.3rem; margin: 0 0 .3rem; }
.posts p { margin: 0; color: var(--ink-2); font-size: .97rem; }

/* education / publications */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 2.5rem; }
.two-col h3 { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; margin: 0 0 1rem; }
.plain { list-style: none; padding: 0; margin: 0; }
.plain li { padding: .7rem 0; border-top: 1px solid var(--rule); color: var(--ink-2); font-size: .95rem; }
.plain li strong { color: var(--ink); font-weight: 600; }

/* contact */
.contact-links { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* ---------- article ---------- */
.article-head { padding: 4rem 0 2.5rem; border-bottom: 1px solid var(--rule); }
.article-head .meta { font-family: var(--mono); font-size: .82rem; color: var(--ink-3); margin: 0 0 1rem; }
.article-head h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(2rem, 4.4vw, 3.1rem); line-height: 1.1; letter-spacing: -.01em; margin: 0 0 1rem; max-width: 24ch; }
.article-head .standfirst { font-size: 1.2rem; color: var(--ink-2); max-width: 60ch; margin: 0; }

.prose { max-width: var(--measure); margin: 0 auto; padding: 3rem 1.5rem 4rem; font-size: 1.06rem; }
.prose h2 { font-family: var(--serif); font-weight: 500; font-size: 1.55rem; margin: 2.6rem 0 .8rem; line-height: 1.25; }
.prose h3 { font-size: 1.05rem; margin: 2rem 0 .5rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.15rem; }
.prose li { margin: .35rem 0; }
.prose blockquote { margin: 1.8rem 0; padding: .2rem 0 .2rem 1.2rem; border-left: 3px solid var(--accent); font-family: var(--serif); font-size: 1.25rem; color: var(--ink); }
.prose code { font-family: var(--mono); font-size: .88em; background: var(--code-bg); padding: .1em .35em; border-radius: 3px; }
.prose pre { background: var(--code-bg); padding: 1rem 1.1rem; overflow-x: auto; border-radius: 3px; font-size: .88rem; line-height: 1.5; }
.prose pre code { background: none; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: .95rem; }
.prose th, .prose td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.prose th { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.prose .callout { background: var(--accent-soft); padding: 1rem 1.2rem; border-radius: 3px; margin: 1.6rem 0; }
.prose .callout p:last-child { margin-bottom: 0; }

.flow { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; margin: 1.6rem 0; font-family: var(--mono); font-size: .82rem; }
.flow span { border: 1px solid var(--rule); background: var(--paper-2); padding: .45rem .65rem; border-radius: 3px; }
.flow i { font-style: normal; color: var(--ink-3); }

.article-foot { max-width: var(--measure); margin: 0 auto; padding: 0 1.5rem 4rem; }
.article-foot .bio { border-top: 1px solid var(--rule); padding-top: 1.5rem; color: var(--ink-2); font-size: .95rem; }

/* ---------- 404 ---------- */
.notfound { padding-top: 6rem; padding-bottom: 6rem; }
.notfound h1 { font-family: var(--serif); font-weight: 500; font-size: 2.4rem; margin: 0 0 1rem; }

/* ---------- footer ---------- */
.site-footer { padding: 2.5rem 0 3rem; color: var(--ink-3); font-size: .88rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.site-footer a { color: var(--ink-2); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .section-head, .role { grid-template-columns: 1fr; gap: .4rem; }
  .cards, .projects, .two-col { grid-template-columns: 1fr; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .posts a { grid-template-columns: 1fr; gap: .3rem; }
  .hero { padding: 3.5rem 0 3rem; }
  .site-header .wrap { flex-direction: column; align-items: flex-start; gap: .4rem; }
  .brand { white-space: nowrap; }
  .nav { gap: .9rem; }
  section.block { padding: 3.25rem 0; }
}

@media print {
  .site-header, .site-footer, .actions, .contact-links { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  section.block { padding: 1.2rem 0; break-inside: avoid; }
}