/* Will to Pattern — site styles
   One typeface, a pale grey-green paper, deep slate ink, one lake-blue for links.
   The murmuration is the only loud thing on the site; everything else stays quiet. */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,500;1,8..60,300;1,8..60,400&display=swap');

:root {
  --paper: #f3f5f2;
  --paper-deep: #e8ece7;
  --ink: #22302f;
  --ink-soft: #5f6f6d;
  --mist: #a9b8b6;
  --lake: #3e6b86;
  --lake-ink: #2d5166;

  --font: 'Source Serif 4', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --measure: 36rem;
  --gutter: clamp(1.25rem, 5vw, 4rem);
}

* { box-sizing: border-box; }

html { background: var(--paper); color: var(--ink); }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.125rem;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--lake); text-decoration: none; text-underline-offset: 0.18em; }
a:hover { color: var(--lake-ink); text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3 {
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
}
h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.8rem); margin-top: 3rem; margin-bottom: 0.6rem; }
h3 { font-size: 1.2rem; margin-top: 2rem; margin-bottom: 0.3rem; }

p { margin: 0 0 1.2em; max-width: var(--measure); }
em { font-style: italic; }

/* Header: a small murmuration echo on every page except the homepage */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem var(--gutter);
  border-bottom: 1px solid var(--paper-deep);
}
.site-header .mark {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--ink);
  font-size: 1.05rem;
}
.site-header .mark:hover { text-decoration: none; color: var(--lake-ink); }
.site-header .echo { width: 120px; height: 36px; display: block; }
.site-nav { display: flex; gap: 1.4rem; font-size: 1rem; }
.site-nav a { color: var(--ink-soft); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom: 1px solid var(--ink); }
.site-nav a:hover { color: var(--lake-ink); text-decoration: none; }

main { flex: 1; padding: 3rem var(--gutter) 5rem; }
main.narrow { max-width: calc(var(--measure) + 2 * var(--gutter)); }

.site-footer {
  padding: 2rem var(--gutter) 2.5rem;
  border-top: 1px solid var(--paper-deep);
  font-size: 0.95rem;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
}
.site-footer a { color: var(--ink-soft); }

/* ---------- Homepage ---------- */
.home { padding: 0; }
.stage {
  position: relative;
  height: 100svh;
  min-height: 540px;
}
#murmuration { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.stage-text {
  position: absolute;
  left: var(--gutter);
  bottom: clamp(2rem, 7vh, 4.5rem);
  max-width: 34rem;
}
.stage-text h1 { margin-bottom: 0.5rem; }
.stage-text .question {
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--ink-soft);
  margin-bottom: 1.6rem;
}
.stage-text .ways { display: flex; gap: 2rem; flex-wrap: wrap; font-size: 1.1rem; }
.stage-text .about-line {
  display: block;
  margin-top: 2.2rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* ---------- Patterns pages ---------- */
.lede {
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  font-weight: 300;
  line-height: 1.45;
  max-width: 30rem;
  margin-bottom: 2.5rem;
}
.triptych {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0 1rem;
  max-width: 60rem;
}
.triptych figure { margin: 0; }
.triptych canvas {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: block;
  background: var(--paper-deep);
}
.triptych figcaption {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-top: 0.5rem;
  min-height: 1.4em;
}
.triptych .hidden-caption { visibility: hidden; }
.reveal-note { font-size: 0.95rem; color: var(--ink-soft); margin: 0.5rem 0 2rem; }
.reveal-note button {
  font: inherit;
  color: var(--lake);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.reveal-note button:hover { text-decoration: underline; }

.ask {
  margin-top: 2.5rem;
  max-width: 30rem;
}
.ask label { display: block; margin-bottom: 0.5rem; }
.ask form { display: flex; gap: 0.6rem; }
.ask input {
  flex: 1;
  font: inherit;
  font-size: 1rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--mist);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
}
.ask button {
  font: inherit;
  font-size: 1rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--lake);
  border-radius: 3px;
  background: var(--lake);
  color: #fff;
  cursor: pointer;
}
.ask button:hover { background: var(--lake-ink); border-color: var(--lake-ink); }
.ask .thanks { color: var(--ink-soft); font-size: 0.95rem; }

.more-line {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-top: 2rem;
}
.foot-link {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--paper-deep);
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.three-ways { list-style: none; padding: 0; margin: 2rem 0 0; max-width: 40rem; }
.three-ways li { padding: 1.2rem 0; border-top: 1px solid var(--paper-deep); }
.three-ways li:last-child { border-bottom: 1px solid var(--paper-deep); }
.three-ways a { font-size: 1.35rem; color: var(--ink); }
.three-ways a:hover { color: var(--lake-ink); }
.three-ways span { display: block; color: var(--ink-soft); font-size: 1rem; margin-top: 0.2rem; }

/* ---------- Essays ---------- */
.essay-list { list-style: none; padding: 0; margin: 2rem 0 0; max-width: 40rem; }
.essay-list li { padding: 1.1rem 0; border-top: 1px solid var(--paper-deep); }
.essay-list li:last-child { border-bottom: 1px solid var(--paper-deep); }
.essay-list a { font-size: 1.3rem; color: var(--ink); }
.essay-list a:hover { color: var(--lake-ink); }
.essay-list .meta { font-size: 0.9rem; color: var(--ink-soft); }
.essay-list .summary { color: var(--ink-soft); margin: 0.3rem 0 0; }

article.essay { max-width: var(--measure); }
article.essay header { margin-bottom: 2.5rem; }
article.essay .meta { color: var(--ink-soft); font-size: 0.95rem; margin-top: 0.6rem; }
article.essay p { font-size: 1.15rem; line-height: 1.65; }
article.essay .series-note {
  font-size: 0.95rem;
  color: var(--ink-soft);
  border-left: 2px solid var(--paper-deep);
  padding-left: 1rem;
  margin: 2rem 0;
}
.placeholder {
  color: var(--ink-soft);
  font-style: italic;
}

/* ---------- Publications ---------- */
.pub-layout {
  display: grid;
  grid-template-columns: minmax(0, 46rem) 8rem;
  gap: 3rem;
  align-items: start;
}
.pub-filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0 2rem; }
.pub-filters button {
  font: inherit;
  font-size: 0.95rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--mist);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}
.pub-filters button[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.pub-filters button:hover { border-color: var(--ink); color: var(--ink); }
.pub-filters button[aria-pressed="true"]:hover { color: var(--paper); }

.highlights { margin: 0 0 2.5rem; padding: 1.4rem 1.5rem; background: var(--paper-deep); border-radius: 4px; }
.highlights h2 { margin: 0 0 0.8rem; font-size: 1.1rem; }
.highlights ul { list-style: none; padding: 0; margin: 0; }
.highlights li { padding: 0.35rem 0; }
.highlights .venue { color: var(--ink-soft); font-size: 0.95rem; }

.pub-list { list-style: none; padding: 0; margin: 0; }
.pub-year { margin-top: 2rem; font-size: 1rem; color: var(--ink-soft); padding-bottom: 0.3rem; border-bottom: 1px solid var(--paper-deep); scroll-margin-top: 1rem; }
.pub { padding: 0.9rem 0; border-bottom: 1px solid var(--paper-deep); }
.pub .title { font-size: 1.15rem; color: var(--ink); }
.pub .title a { color: var(--ink); }
.pub .title a:hover { color: var(--lake-ink); }
.pub .venue { color: var(--ink-soft); font-size: 0.95rem; }
.pub .aside { font-size: 0.9rem; margin-left: 0.6rem; }
.pub .summary { margin: 0.25rem 0 0; color: var(--ink-soft); font-size: 1rem; }
.pub.is-hidden, .pub-year.is-hidden { display: none; }

.year-rail { position: sticky; top: 1.5rem; font-size: 0.9rem; }
.year-rail ul { list-style: none; padding: 0; margin: 0; }
.year-rail li { padding: 0.1rem 0; }
.year-rail a { color: var(--ink-soft); }
.year-rail a:hover { color: var(--ink); text-decoration: none; }

/* ---------- About ---------- */
.about-answer {
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  font-weight: 300;
  line-height: 1.45;
  max-width: 32rem;
  margin-bottom: 2.5rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  body { font-size: 1.05rem; }
  .site-header { flex-wrap: wrap; }
  .site-nav { gap: 1rem; }
  .triptych { grid-template-columns: 1fr; max-width: 24rem; }
  .pub-layout { grid-template-columns: 1fr; }
  .year-rail { display: none; }
  .stage-text .ways { gap: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}