/* GridFloor — shared stylesheet, adapted from nathanzhao.cc's blog aesthetic.
   Light-first, Source Serif 4 body, Apple Garamond headings, calm palette.
   Data-heavy pages use .wide / .full container variants. */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,200..900;1,8..60,200..900&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --bg: #ffffff;
  --text: #333333;
  --heading: #111111;
  --muted: #777777;
  --dim: #999999;
  --link: #667eea;
  --link-soft: #4a5aba;
  --rule: #e0e0e0;
  --rule-soft: #efefef;
  --code-bg: #2e3e4e;
  --code-text: #eeeeee;
  --good: #1a9850;
  --bad: #d73027;
  --warn: #f59e0b;
  --serif: "Source Serif 4", "Georgia", serif;
  --display: "Apple Garamond", "Garamond", "Source Serif 4", serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
}

body {
  font-family: var(--serif);
  margin: auto;
  padding: 2rem 1.5rem;
  max-width: 900px;
  text-align: left;
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 1.6;
  font-size: 17px;
}

body.wide { max-width: 1100px; }
body.full { max-width: 1280px; }

@media (max-width: 480px) {
  body { padding: 1.5rem 1rem; font-size: 16px; }
}

/* ---------- typography ---------- */
h1, h2, h3, h4, h5, h6, strong, b {
  color: var(--heading);
  font-family: var(--display);
  font-weight: 600;
}

h1 { font-size: 2.2rem; letter-spacing: -0.01em; margin: 0 0 .2rem; }
h2 { font-size: 1.4rem; margin: 2rem 0 .6rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 .4rem; }
h4 { font-size: 1rem; margin: 1.2rem 0 .3rem; }

@media (max-width: 480px) { h1 { font-size: 1.7rem; } }

p { margin: .7em 0; }
p + p { margin-top: .9em; }

a {
  color: var(--link);
  text-decoration: none;
  transition: opacity .2s ease;
}
a:hover { opacity: 0.65; }

ul, ol { padding-left: 1.3em; }
li { margin: .25em 0; }

hr { border: none; border-top: 1px solid var(--rule); margin: 2rem 0; }

blockquote {
  border-left: 2px solid var(--rule);
  color: #555;
  padding-left: 1rem;
  font-style: italic;
  margin-left: 0;
}

code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.5px 5px;
  border-radius: 3px;
}

pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 0.6em 1em 0.7em;
  margin: 0.6em 0;
  border-radius: 4px;
  overflow: auto;
  line-height: 1.45;
  font-size: 0.9rem;
}
pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
}

/* ---------- lead / meta lines ---------- */
.lead {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
  margin: 0 0 1.5rem;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 1.5rem 0 .3rem;
}

/* ---------- top nav (hover-reveal pattern preserved by nav.js) ---------- */
#gf-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; gap: 4px; align-items: center;
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  transform: translateY(-100%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  font-family: var(--mono);
}
#gf-nav.show { transform: translateY(0); }
#gf-nav a {
  font-size: 12.5px; color: var(--muted); padding: 6px 11px;
  border-radius: 6px; transition: color .15s ease;
}
#gf-nav a:hover { color: var(--heading); background: var(--rule-soft); opacity: 1; }
#gf-nav a.active { color: var(--link); }
#gf-nav a.brand { color: var(--heading); font-weight: 700; letter-spacing: .04em; }
#gf-nav a.ext { color: var(--link); margin-left: auto; }
#gf-trigger { position: fixed; top: 0; left: 0; right: 0; height: 14px; z-index: 199; }

/* ---------- back link / breadcrumb ---------- */
a.back {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--link);
}

/* ---------- panels: verdict / caveat / note ---------- */
.panel {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 12px 16px;
  margin: 1rem 0;
  background: #fafafa;
}

.verdict {
  border-left: 3px solid var(--good);
  background: rgba(26, 152, 80, 0.04);
  padding: 12px 16px;
  border-radius: 0 6px 6px 0;
  margin: 1.2rem 0;
  font-size: 0.95rem;
}

.caveat {
  border-left: 3px solid var(--warn);
  background: rgba(245, 158, 11, 0.04);
  padding: 10px 14px;
  border-radius: 0 6px 6px 0;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.note {
  border-left: 2px solid var(--link);
  background: rgba(102, 126, 234, 0.04);
  padding: 10px 14px;
  border-radius: 0 6px 6px 0;
  margin: 1rem 0;
  font-size: 0.9rem;
}

/* ---------- tables (clean, restrained) ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1rem 0;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
th {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--mono); }
tr:hover td { background: var(--rule-soft); }

/* ---------- figures / charts ---------- */
figure { margin: 1.5rem 0; }
figure img, figure svg, figure canvas { display: block; max-width: 100%; height: auto; margin: 0 auto; }
figcaption { text-align: center; font-size: 0.8rem; color: var(--muted); padding-top: 0.5em; font-style: italic; }

canvas, svg { max-width: 100%; }

/* ---------- chips / badges ---------- */
.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--rule-soft);
  color: var(--text);
}
.chip.self { background: rgba(26, 152, 80, 0.14); color: #2c6e3a; }
.chip.yes  { background: rgba(26, 152, 80, 0.10); color: #2c6e3a; }
.chip.partial { background: rgba(245, 158, 11, 0.14); color: #8a6a14; }
.chip.no { background: var(--rule); color: var(--muted); }

/* ---------- cards / grid (landing) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 1.5rem 0;
}
.card {
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 14px 16px;
  background: #fff;
  transition: border-color .18s ease;
}
.card:hover { border-color: var(--link); }
.card h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.88rem; }
.card a.cardlink { display: block; color: inherit; }

/* ---------- ambient (subtle hover/glow, opt-in via body.ambient) ---------- */
body.ambient a:hover { text-shadow: 0 0 8px rgba(102, 126, 234, 0.35); }
body.ambient h1:hover, body.ambient h2:hover { text-shadow: 0 0 12px rgba(102, 126, 234, 0.15); }

/* ---------- print ---------- */
@media print {
  #gf-nav, #gf-trigger { display: none !important; }
  body { max-width: none; padding: 0; }
}