/* =================================================================
   jthomas.site — home page. "Swarm stage", Sky palette.
   A living glowworm swarm (js/swarm.js) re-forms into a figure for
   each section. Tokens below; see CLAUDE.md for the rules.
   ================================================================= */

/* Fonts: css/fonts.css */

:root {
  /* Sky */
  --bg:        #F4F9FE;
  --surface:   #FCFEFF;   /* cards */
  --ink:       #0F2238;   /* 14.3:1 */
  --ink-2:     #4A5E75;   /* 5.9:1, secondary text */
  --accent:    #1F5FCC;   /* 5.2:1, links, buttons (white text 5.9:1) */
  --accent-hi: #1A52B3;
  --line:      color-mix(in srgb, var(--ink) 13%, transparent);
  /* canvas only (not text): */
  --swarm-glow: #2F7BFF;
  --swarm-dot:  #8FA6C0;

  --sans: "Bricolage Grotesque", "Bricolage Fallback", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --step--1: 0.8125rem;  /* 13  mono metadata */
  --step-0:  1.1875rem;  /* 19  body */
  --step-1:  1.375rem;   /* 22  lede */
  --step-2:  1.5rem;     /* 24  entry titles */
  --step-3:  clamp(2rem, 1.3rem + 2.2vw, 2.75rem);     /* 32–44 */
  --step-4:  clamp(2.25rem, 1.2rem + 3.4vw, 3.75rem);  /* 36–60 section */
  --step-5:  clamp(1.875rem, 1rem + 2.9vw, 3.5rem);    /* 30–56 hero line */

  --track-tight: -0.03em;
  --pad: clamp(20px, 4vw, 56px);
  --maxw: 1240px;
  --radius: 10px;       /* buttons */
  --radius-card: 16px;  /* cards, photo */
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ───────── Base ───────── */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, p, ol, ul, dl, dd, figure, blockquote { margin: 0; padding: 0; }
ol, ul { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  transition: text-decoration-color .2s, color .2s;
}
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: color-mix(in srgb, var(--accent) 22%, transparent); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 50; background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: var(--radius); }
.skip:focus { top: 12px; }
p, li { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }

/* ───────── Stage ───────── */
#stage {
  position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 0;
  pointer-events: none;
  transition: opacity .8s var(--ease);
}
#stage.ambient { opacity: .45; }

/* ───────── Header ───────── */
.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 18px var(--pad);
  background: linear-gradient(var(--bg) 55%, color-mix(in srgb, var(--bg) 0%, transparent));
}
.brand { font-weight: 650; font-size: 18px; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; }
.top nav { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.top nav a { color: var(--ink-2); text-decoration: none; }
.top nav a:hover, .top nav a.on { color: var(--ink); }
.top nav a.on { text-decoration: underline; text-decoration-color: var(--swarm-glow); text-decoration-thickness: 2px; text-underline-offset: 6px; }
.top nav .pill-cta {
  color: #fff; background: var(--accent); padding: 8px 14px; border-radius: var(--radius); text-decoration: none;
}
.top nav .pill-cta:hover { background: var(--accent-hi); color: #fff; }
.top nav .pill-cta.on { color: #fff; text-decoration: none; }
@media (max-width: 860px) { .top nav a:not(.pill-cta) { display: none; } }

/* ───────── Sections ───────── */
main { position: relative; z-index: 1; }
.stage-sec {
  min-height: 100vh;
  padding: 120px var(--pad) 96px;
  display: flex; flex-direction: column; justify-content: center;
}
.copy { max-width: 540px; }
.kicker {
  font-family: var(--mono); font-size: var(--step--1); letter-spacing: .02em;
  color: var(--ink-2); margin-bottom: 20px;
}
.kicker .mark { color: var(--accent); }
.kicker a { color: inherit; }
.h-sec { font-size: var(--step-4); line-height: 1.04; font-weight: 600; letter-spacing: var(--track-tight); }
.copy > p { margin-top: 20px; color: var(--ink-2); }
.copy > p.lead { color: var(--ink); font-size: var(--step-1); line-height: 1.45; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--accent); color: #fff;
  padding: 14px 22px; border-radius: var(--radius);
  font-weight: 600; font-size: 17px; line-height: 1.2; text-decoration: none;
  transition: background-color .2s;
}
.btn:hover { background: var(--accent-hi); color: #fff; }
.btn:focus-visible { border-radius: var(--radius); }
.ctas { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 32px; }

/* ───────── Hero ───────── */
#hero { justify-content: flex-end; padding-bottom: 72px; }
#hero .eyebrow { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-2); margin-bottom: 18px; }
#hero h1 { font-size: var(--step-5); line-height: 1.08; font-weight: 600; letter-spacing: var(--track-tight); max-width: 17em; }
#hero .sub { margin-top: 22px; font-size: var(--step-1); line-height: 1.45; color: var(--ink-2); max-width: 30em; }
.social { display: flex; gap: 18px; font-family: var(--mono); font-size: var(--step--1); }
.social a { color: var(--ink-2); }
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .9s ease, transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal, .reduce .reveal { opacity: 1; transform: none; transition: none; }

/* ───────── Throughline ───────── */
.stats { display: flex; flex-wrap: wrap; gap: 12px 36px; margin-top: 28px; }
.stats div { font-size: 15px; color: var(--ink-2); line-height: 1.3; max-width: 13em; }
.stats b { display: block; font-size: 32px; line-height: 1.1; font-weight: 650; color: var(--ink); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.years { margin-top: 28px; }
.years li { display: grid; grid-template-columns: 64px 1fr; gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 17px; }
.years time { font-family: var(--mono); color: var(--accent); font-size: 14px; padding-top: 3px; }
.quote { margin-top: 32px; padding-left: 20px; border-left: 2px solid var(--swarm-glow); }
.quote p { font-size: var(--step-1); line-height: 1.4; font-weight: 500; letter-spacing: -0.01em; text-indent: -0.4em; }
.quote figcaption { margin-top: 10px; font-family: var(--mono); font-size: var(--step--1); color: var(--ink-2); }

/* ───────── Essays ───────── */
.essays { margin-top: 28px; border-top: 1px solid var(--line); }
.essays a { display: block; padding: 18px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.essays .d { font-family: var(--mono); font-size: 12px; color: var(--ink-2); margin-bottom: 6px; }
.essays .t { font-size: var(--step-2); line-height: 1.2; font-weight: 600; letter-spacing: -0.02em; transition: color .2s; }
.essays .s { color: var(--ink-2); font-size: 17px; margin-top: 4px; }
.essays a:hover .t { color: var(--accent); }
.more-links { margin-top: 18px; display: flex; gap: 24px; font-size: 16px; }

/* ───────── Work ───────── */
.work { margin-top: 28px; display: grid; gap: 14px; }
.work article { background: color-mix(in srgb, var(--surface) 88%, transparent); border: 1px solid var(--line); border-radius: var(--radius-card); padding: 20px 22px; backdrop-filter: blur(2px); }
.work .when { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.work h3 { font-size: 21px; line-height: 1.25; font-weight: 600; letter-spacing: -0.015em; margin-top: 4px; }
.work p { font-size: 16px; color: var(--ink-2); margin-top: 6px; line-height: 1.5; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tags li { font-family: var(--mono); font-size: 12px; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-2); background: var(--bg); }

/* ───────── Appendix (quiet, dense) ───────── */
.appendix { padding: 96px var(--pad) 48px; }
.appendix-inner { max-width: var(--maxw); margin: 0 auto; }
.appendix-head { max-width: 640px; margin-bottom: 56px; }
.appendix-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 56px 40px; }
.block { grid-column: span 6; }
.block-wide { grid-column: 1 / -1; }
.block h3 { font-size: 22px; font-weight: 600; letter-spacing: -0.015em; padding-bottom: 12px; border-bottom: 1px solid var(--ink); margin-bottom: 4px; }
.bib li { display: grid; grid-template-columns: 2.4em 1fr; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 16px; line-height: 1.45; }
.bib .n { font-family: var(--mono); font-size: 12px; color: var(--ink-2); padding-top: 3px; }
.bib .title { color: var(--ink); font-weight: 550; text-decoration: none; }
a.title:hover { color: var(--accent); }
.bib .meta { display: block; color: var(--ink-2); font-size: 14px; margin-top: 3px; }
.bib .type { font-family: var(--mono); font-size: 11px; color: var(--accent); margin-left: 8px; white-space: nowrap; }
.rows li { display: grid; grid-template-columns: 1fr auto; gap: 2px 20px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.rows .main { font-weight: 550; font-size: 17px; }
.rows .sub { grid-column: 1; font-size: 15px; color: var(--ink-2); }
.rows .hl { grid-column: 1 / -1; font-size: 15px; color: var(--ink-2); line-height: 1.5; margin-top: 4px; }
.skills { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; }
.skills div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.skills dt { font-weight: 600; font-size: 17px; }
.skills dd { margin: 4px 0 0; font-size: 15px; color: var(--ink-2); line-height: 1.5; }
.rows .yr { grid-column: 2; grid-row: 1 / span 2; font-family: var(--mono); font-size: 13px; color: var(--ink-2); white-space: nowrap; padding-top: 3px; }
.now { font-family: var(--mono); font-size: 10px; font-weight: 500; letter-spacing: .06em; color: #fff; background: var(--accent); border-radius: 999px; padding: 2px 7px; margin-left: 8px; vertical-align: 2px; }
.projects { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 16px; }
.projects a { display: flex; flex-direction: column; gap: 6px; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card); text-decoration: none; color: var(--ink); transition: border-color .2s; }
.projects a:hover { border-color: var(--accent); }
.projects .name { font-weight: 600; font-size: 17px; word-break: break-word; }
.projects .lang { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.projects p { font-size: 15px; color: var(--ink-2); line-height: 1.45; }
.about { display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: start; margin-top: 16px; }
.about img { border-radius: var(--radius-card); aspect-ratio: 180 / 220; object-fit: cover; }
.about p { font-size: 17px; }
.about p + p { margin-top: 12px; color: var(--ink-2); }
.about .creds { font-family: var(--mono); font-size: 13px; }
.service li { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
.service-tail { margin-top: 14px; font-size: 15px; color: var(--ink-2); }

/* ───────── Contact & footer ───────── */
#contact { position: relative; z-index: 1; padding-bottom: 0; }
#contact .copy { margin-block: auto; }
.mail { margin-top: 28px; font-size: var(--step-3); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; }
.mail a { text-decoration-thickness: 2px; }
.elsewhere { margin-top: 20px; font-size: 16px; color: var(--ink-2); display: flex; flex-wrap: wrap; gap: 6px 20px; }
.colophon {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px;
  margin: 64px calc(-1 * var(--pad)) 0;
  padding: 24px var(--pad) 72px;
  border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 12px; color: var(--ink-2);
  background: var(--bg);
}


/* ───────── Responsive ───────── */
@media (max-width: 1023px) {
  .appendix-grid { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .block { grid-column: 1 / -1; }
  .projects { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 800px) {
  .stage-sec:not(#hero) {
    padding-top: calc(38vh + 40px);
    justify-content: flex-start;
    background: linear-gradient(transparent 36vh, color-mix(in srgb, var(--bg) 88%, transparent) 44vh);
  }
}
@media (max-width: 560px) {
  .projects { grid-template-columns: 1fr; }
  .skills { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .about img { max-width: 180px; }
  .bib li { grid-template-columns: 2em 1fr; }
    .ctas { gap: 16px 20px; }
}

/* ───────── Print: a plain CV ───────── */
@media print {
  #stage, .top, .ctas, .skip, .social { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .stage-sec { min-height: 0; padding: 12pt 0; background: none !important; }
  .reveal { opacity: 1; transform: none; }
  .appendix { padding: 12pt 0; }
  .block { break-inside: avoid; }
  a { color: #000; text-decoration: none; }
  .projects a, .work article { border-color: #999; background: none; }
}