/* Everybody Reads blog — tokens lifted from everybodyreads.org.uk */
@import url("https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,400;0,600;0,700;0,800;1,400;1,600&display=swap");

:root {
  --ink: #1e293b;
  --body: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --soft: #f8fafc;
  --soft-2: #f1f5f9;
  --white: #fff;

  --blue: #309dfb;
  --blue-dark: #1b84dd;
  --orange: #f88b27;
  --purple: #6655dc;
  --green: #4a7c59;

  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 4px 4px 0 0 var(--ink);
  --shadow-sm: 3px 3px 0 0 var(--ink);
  --shadow-lg: 6px 6px 0 0 var(--ink);
  --border: 2px solid var(--ink);
  --wrap: 1120px;
}

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

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

body {
  margin: 0;
  font-family: Nunito, ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
  color: var(--body);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--ink); font-weight: 800; letter-spacing: -0.025em; line-height: 1.15; margin: 0 0 0.5em; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 740px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff;
  padding: 10px 16px; border-radius: 0 0 var(--radius) 0; z-index: 100;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 4px; }

/* ---------- Header ---------- */
.site-header { background: var(--white); border-bottom: 3px solid var(--ink); }
.site-header .wrap {
  display: flex; align-items: center; gap: 20px;
  min-height: 92px; padding-top: 14px; padding-bottom: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { width: 44px; height: 44px; }
.brand-word { font-weight: 800; font-size: 19px; line-height: 1.05; letter-spacing: -0.02em; }
.brand-word span { display: block; color: var(--ink); }
.brand-word span + span { color: var(--blue); }
.brand:hover { text-decoration: none; }

.site-nav { display: flex; align-items: center; gap: 10px; margin-left: auto; flex-wrap: wrap; }
.navlink {
  display: inline-block; padding: 8px 16px; border-radius: var(--radius);
  border: 2px solid var(--ink); background: var(--white); color: #334155;
  font-weight: 700; font-size: 15px; box-shadow: var(--shadow-sm);
  transition: transform .12s ease, box-shadow .12s ease;
}
.navlink:hover { text-decoration: none; transform: translate(-1px, -1px); box-shadow: 4px 4px 0 0 var(--ink); }
.navlink:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 0 var(--ink); }
.navlink.is-current { background: var(--soft); color: var(--blue); }
.navlink.primary { background: var(--blue); color: #fff; }
.navlink.primary:hover { background: var(--blue-dark); }

/* ---------- Page head ---------- */
.page-head { padding: 56px 0 8px; }
.page-head h1 { font-size: clamp(34px, 5vw, 48px); margin-bottom: 12px; }
.page-head .lede { font-size: 19px; color: var(--body); max-width: 60ch; margin: 0; }

.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .09em;
  text-transform: uppercase; padding: 5px 12px; border-radius: 999px;
  border: 2px solid var(--ink); background: var(--soft); color: var(--ink);
}
.eyebrow.research  { background: #e3f1ff; }
.eyebrow.teachers  { background: #e8f3ec; }
.eyebrow.parents   { background: #fdeee0; }
.eyebrow.product   { background: #eceaff; }

/* ---------- Post grid ---------- */
.post-grid {
  display: grid; gap: 28px; padding: 40px 0 72px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
.post-card {
  display: flex; flex-direction: column; background: var(--white);
  border: var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow);
  overflow: hidden; transition: transform .14s ease, box-shadow .14s ease;
}
.post-card:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-lg); }
.post-card .cover { border-bottom: var(--border); background: var(--soft); }
.post-card .cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.post-card .body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; gap: 12px; }
.post-card h2 { font-size: 21px; line-height: 1.25; margin: 0; }
.post-card h2 a { color: var(--ink); }
.post-card h2 a:hover { color: var(--blue); text-decoration: none; }
.post-card p { margin: 0; font-size: 15.5px; color: var(--body); }
.post-card .meta { margin-top: auto; padding-top: 6px; font-size: 13.5px; color: var(--muted); font-weight: 600; }
.post-card .meta span + span::before { content: "·"; margin: 0 8px; }

.featured { grid-column: 1 / -1; }
@media (min-width: 880px) {
  .featured { display: grid; grid-template-columns: 1.05fr 1fr; }
  .featured .cover { border-bottom: 0; border-right: var(--border); }
  .featured .cover img { height: 100%; aspect-ratio: auto; min-height: 320px; }
  .featured .body { padding: 36px 38px; gap: 14px; }
  .featured h2 { font-size: 30px; }
  .featured p { font-size: 17px; }
}

/* ---------- Article ---------- */
.article-head { padding: 52px 0 0; }
.article-head h1 { font-size: clamp(32px, 4.6vw, 46px); margin: 16px 0 14px; }
.article-meta { font-size: 14.5px; color: var(--muted); font-weight: 600; }
.article-meta span + span::before { content: "·"; margin: 0 9px; }

.article-cover { margin: 30px 0 38px; border: var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.article-cover img { width: 100%; }

.prose { font-size: 18px; line-height: 1.62; color: var(--body); padding-bottom: 16px; }
.prose > p { margin: 0 0 24px; }
.prose h2 { font-size: 27px; margin: 44px 0 14px; }
.prose h3 { font-size: 21px; margin: 34px 0 10px; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose em { color: var(--body); }
.prose ul, .prose ol { margin: 0 0 24px; padding-left: 24px; }
.prose li { margin-bottom: 8px; }
.prose hr { border: 0; border-top: 2px solid var(--line); margin: 40px 0; }
.prose img { border: var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin: 32px 0; }
.prose blockquote {
  margin: 32px 0; padding: 22px 26px; background: var(--soft);
  border: var(--border); border-left-width: 6px; border-radius: var(--radius);
  box-shadow: var(--shadow); font-size: 19px; color: var(--ink); font-weight: 600;
}
.prose blockquote p:last-child { margin-bottom: 0; }

/* callouts */
.stat-row { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin: 34px 0; }
.stat {
  background: var(--white); border: var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px 22px;
}
.stat .n { display: block; font-size: 34px; font-weight: 800; color: var(--blue); line-height: 1.1; letter-spacing: -0.03em; }
.stat .l { display: block; font-size: 14px; color: var(--muted); font-weight: 700; margin-top: 6px; }

.byline-note {
  margin: 40px 0 0; padding: 20px 24px; background: var(--soft);
  border: var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  font-size: 16px; color: var(--ink);
}
.byline-note p { margin: 0; }

.cta-band {
  margin: 56px 0 72px; padding: 36px 32px; text-align: center;
  background: var(--soft); border: var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
}
.cta-band h2 { font-size: 26px; margin-bottom: 10px; }
.cta-band p { margin: 0 auto 22px; max-width: 48ch; color: var(--body); }
.btn {
  display: inline-block; padding: 13px 26px; border-radius: var(--radius);
  border: var(--border); background: var(--blue); color: #fff; font-weight: 800; font-size: 16px;
  box-shadow: var(--shadow); transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { text-decoration: none; transform: translate(-2px, -2px); box-shadow: var(--shadow-lg); background: var(--blue-dark); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 0 var(--ink); }
.btn.ghost { background: var(--white); color: var(--ink); }

.back-link { display: inline-block; font-weight: 700; font-size: 15px; color: var(--muted); }
.back-link:hover { color: var(--blue); text-decoration: none; }

/* more posts */
.more { border-top: 3px solid var(--ink); padding: 48px 0 72px; background: var(--soft); margin-top: 20px; }
.more h2 { font-size: 22px; margin-bottom: 22px; }
.more-grid { display: grid; gap: 22px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* ---------- Footer ---------- */
.site-footer { border-top: 3px solid var(--ink); background: var(--white); padding: 48px 0 32px; }
.footer-grid { display: grid; gap: 34px; grid-template-columns: 1.4fr 1fr 1fr 1fr; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h3 { font-size: 14px; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer li a { color: var(--body); font-size: 15px; }
.site-footer li a:hover { color: var(--blue); }
.footer-tag { font-size: 15px; color: var(--muted); margin: 12px 0 0; max-width: 30ch; }
.footer-base { margin-top: 36px; padding-top: 22px; border-top: 2px solid var(--line); font-size: 14px; color: var(--muted); }

@media (max-width: 640px) {
  .site-header .wrap { flex-wrap: wrap; min-height: 0; gap: 14px; }
  .site-nav { margin-left: 0; width: 100%; }
  .navlink { font-size: 14px; padding: 7px 13px; }
  .prose { font-size: 17px; }
}

/* ---------- Inline figures ---------- */
.inline-fig { margin: 36px 0; }
.inline-fig img {
  width: 100%; border: var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); margin: 0; background: var(--white);
}
.inline-fig figcaption {
  margin-top: 12px; font-size: 14.5px; color: var(--muted);
  font-weight: 600; text-align: center;
}
.post-card .cover img, .article-cover img { background: var(--white); }

/* ---------- Section filter chips ---------- */
.filterbar { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.chip {
  display: inline-block; padding: 8px 18px; border-radius: 999px;
  border: 2px solid var(--ink); background: var(--white); color: #334155;
  font-weight: 700; font-size: 15px; box-shadow: var(--shadow-sm);
  transition: transform .12s ease, box-shadow .12s ease;
}
.chip:hover { text-decoration: none; transform: translate(-1px, -1px); box-shadow: 4px 4px 0 0 var(--ink); }
.chip:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 0 var(--ink); }
.chip.is-on { background: var(--blue); color: #fff; }
.chip.is-on:hover { background: var(--blue-dark); }

.empty-note {
  margin: 40px 0 72px; padding: 28px; text-align: center;
  background: var(--soft); border: 2px dashed var(--ink);
  border-radius: var(--radius-lg); color: var(--muted); font-weight: 600;
}