/* Difficulty Adjusted shared stylesheet */

:root {
  --bg: #0b0b0c;
  --fg: #e9e7e2;
  --muted: #9c988f;
  --rule: #2a2a2c;
  --accent: #f7931a;
  --link: #e9e7e2;
  --link-hover: #ffffff;
  --maxw: 640px;
  --maxw-read: 680px;
  --serif: ui-serif, "Iowan Old Style", "Charter", Georgia, Cambria, "Times New Roman", Times, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafaf7;
    --fg: #161616;
    --muted: #555049;
    --rule: #e2ddd2;
    --link: #161616;
    --link-hover: #000000;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px 96px;
}
main.read { max-width: var(--maxw-read); }

.mast {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.mast a { color: var(--muted); text-decoration: none; }
.mast a:hover { color: var(--fg); }
.mast .dot { color: var(--accent); }

h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 42px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}

h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
}

h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 32px 0 10px;
}

.sub {
  color: var(--muted);
  font-style: italic;
  margin: 0 0 36px;
}

p { margin: 0 0 18px; }
.lede { font-size: 19px; }

ul, ol { margin: 0 0 18px; padding-left: 24px; }
li { padding: 3px 0; }

hr.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 32px 0;
}

.cta {
  display: inline-block;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 14px 22px;
  background: var(--accent);
  color: #0b0b0c;
  text-decoration: none;
  border-radius: 2px;
  transition: transform 80ms ease, opacity 80ms ease;
}
.cta:hover { opacity: 0.92; transform: translateY(-1px); color: #0b0b0c; }
.cta.secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--rule);
}
.cta.secondary:hover { color: var(--fg); border-color: var(--muted); }

.cta-row {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin: 8px 0 4px;
}
.cta-note {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
}

a { color: var(--link); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--link-hover); }

.meta-block {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--muted);
}
.meta-block strong { color: var(--fg); font-weight: 600; }

.what-list { list-style: none; padding: 0; margin: 0 0 8px; }
.what-list li { padding: 6px 0; border-bottom: 1px dashed var(--rule); }
.what-list li:last-child { border-bottom: 0; }

.not-for { color: var(--muted); font-size: 16px; font-style: italic; }

.tracker {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--muted);
  border-left: 2px solid var(--rule);
  padding: 8px 0 8px 14px;
}
.tracker strong { color: var(--fg); font-weight: 600; }

/* Cornerstone hub cards */
.piece-list { list-style: none; padding: 0; margin: 0; }
.piece {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}
.piece:last-child { border-bottom: 0; }
.piece a.piece-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 21px;
  text-decoration: none;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.piece a.piece-title:hover { color: var(--accent); }
.piece .piece-desc { color: var(--muted); font-size: 16px; margin: 6px 0 0; }
.piece .piece-soon {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.start-here {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 6px;
}

.article-meta {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 28px;
}

.callout {
  font-size: 16px;
  color: var(--muted);
  border-left: 2px solid var(--rule);
  padding: 4px 0 4px 16px;
  margin: 0 0 18px;
  font-style: italic;
}

.endnote { font-size: 15px; color: var(--muted); font-style: italic; }

footer {
  margin-top: 56px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--fg); }

@media (max-width: 480px) {
  main { padding: 48px 20px 72px; }
  h1 { font-size: 34px; }
  h2 { font-size: 23px; }
  body { font-size: 17px; }
}