/* RecordRefinery design system.
   Reference: archival ledgers and instrument datasheets, not SaaS marketing.
   Rules: real numbers in monospace with tabular figures, hairline rules,
   warm paper ground, one institutional accent, one copper data accent. */

:root {
  --paper:    #fbfaf7;
  --paper-2:  #f4f2ec;
  --paper-3:  #edeae1;
  --ink:      #17181c;
  --ink-2:    #55585f;
  --ink-3:    #8b8f97;
  --rule:     #ddd8cd;
  --rule-2:   #c9c3b5;
  --accent:   #1c3f5f;   /* institutional blue, links and headings */
  --copper:   #8a5320;   /* data highlights, the verify affordance */
  --good:     #2a6248;
  --warn:     #8a5320;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 68ch;
  --page: 860px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:   #0e1013;
    --paper-2: #16191e;
    --paper-3: #1d2127;
    --ink:     #e8e9eb;
    --ink-2:   #9ea3ab;
    --ink-3:   #6f757e;
    --rule:    #262a31;
    --rule-2:  #333942;
    --accent:  #8fb4d8;
    --copper:  #d19a5e;
    --good:    #6fbc94;
    --warn:    #d19a5e;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

.wrap { max-width: var(--page); margin: 0 auto; padding: 0 24px 96px; }
.measure { max-width: var(--measure); }

/* ---------- masthead ---------- */

.masthead {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding: 22px 0 14px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 6px;
}
.mark { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.mark svg { display: block; }
.mark .name {
  font-family: var(--serif);
  font-size: 21px; font-weight: 600; letter-spacing: -.015em;
}
.mark .name em { font-style: normal; color: var(--copper); }
.masthead nav { display: flex; gap: 20px; font-size: 14px; }
.masthead nav a { color: var(--ink-2); text-decoration: none; }
.masthead nav a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.subrule {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px; margin-bottom: 40px;
  font-family: var(--mono);
  font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-3);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}

/* ---------- type ---------- */

h1 {
  font-family: var(--serif);
  font-size: clamp(30px, 4.6vw, 42px);
  line-height: 1.14; letter-spacing: -.02em;
  margin: 0 0 18px; font-weight: 600;
  max-width: 20ch;
}
h2 {
  font-family: var(--serif);
  font-size: 25px; line-height: 1.24; letter-spacing: -.012em;
  margin: 0 0 14px; font-weight: 600;
}
h3 { font-size: 16px; margin: 0 0 8px; font-weight: 650; letter-spacing: -.005em; }

.lede { font-size: 19.5px; line-height: 1.55; color: var(--ink-2); max-width: 60ch; margin: 0 0 20px; }
p { margin: 0 0 16px; max-width: var(--measure); }
a { color: var(--accent); text-underline-offset: 2px; }
ul, ol { max-width: var(--measure); margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 8px; }
strong { font-weight: 650; }
.small { font-size: 14.5px; color: var(--ink-2); }
.mono { font-family: var(--mono); font-size: .92em; }

/* numbered section headers, the methodological device */
section { margin-top: 58px; }
.sec-no {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em;
  color: var(--copper); text-transform: uppercase;
  display: block; margin-bottom: 10px;
}

/* ---------- datasheet header ---------- */

.spec {
  border: 1px solid var(--rule-2);
  background: var(--paper-2);
  border-radius: 3px;
  margin: 26px 0;
}
.spec dl {
  margin: 0; display: grid; grid-template-columns: 1fr;
}
@media (min-width: 640px) { .spec dl { grid-template-columns: 1fr 1fr; } }
.spec .pair {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
@media (min-width: 640px) {
  .spec .pair:nth-child(odd) { border-right: 1px solid var(--rule); }
}
.spec .pair:last-child, .spec .pair:nth-last-child(2):nth-child(odd) { border-bottom: 0; }
.spec dt { color: var(--ink-2); }
.spec dd { margin: 0; font-family: var(--mono); font-size: 13px; text-align: right; }

/* ---------- stat row ---------- */

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
         background: var(--rule); border: 1px solid var(--rule); margin: 26px 0; border-radius: 3px; overflow: hidden; }
@media (min-width: 680px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--paper); padding: 18px 16px; }
.stat .n {
  font-family: var(--mono); font-size: 27px; font-weight: 600;
  letter-spacing: -.03em; line-height: 1; color: var(--ink);
}
.stat .n sup { font-size: 14px; font-weight: 500; color: var(--ink-3); letter-spacing: 0; }
.stat .l { font-size: 12.5px; line-height: 1.4; color: var(--ink-2); margin-top: 7px; }

/* ---------- tables ---------- */

.scroll { overflow-x: auto; border: 1px solid var(--rule-2); border-radius: 3px; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
thead th {
  background: var(--paper-3);
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .07em; text-transform: uppercase;
  color: var(--ink-2); font-weight: 600; text-align: left;
  padding: 9px 12px; border-bottom: 1px solid var(--rule-2); white-space: nowrap;
}
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td.d { font-family: var(--mono); font-size: 12.5px; }
td.w { white-space: normal; min-width: 22ch; }

.tag {
  display: inline-block; font-family: var(--mono);
  font-size: 10.5px; letter-spacing: .04em; text-transform: uppercase;
  padding: 2px 6px; border-radius: 2px; border: 1px solid var(--rule-2); color: var(--ink-2);
}
.tag.clear { color: var(--good); border-color: currentColor; }
.tag.dnc   { color: var(--warn); border-color: currentColor; }

/* fill-rate bar inside the data dictionary */
.fill { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; }
.fill .bar { width: 46px; height: 5px; background: var(--rule); border-radius: 2px; overflow: hidden; flex: none; }
.fill .bar i { display: block; height: 100%; background: var(--copper); }

/* ---------- document block, the QA card ---------- */

.doc {
  border: 1px solid var(--rule-2); border-top: 3px solid var(--ink);
  background: var(--paper-2); border-radius: 2px;
  padding: 22px 24px; margin: 22px 0;
}
.doc .doc-hd {
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-2); margin-bottom: 4px;
}
.doc h3 { font-family: var(--serif); font-size: 19px; margin-bottom: 14px; font-weight: 600; }
.doc dl { margin: 0; }
.doc .line {
  display: flex; justify-content: space-between; gap: 16px; align-items: baseline;
  padding: 7px 0; border-bottom: 1px dotted var(--rule-2); font-size: 14.5px;
}
.doc .line:last-of-type { border-bottom: 0; }
.doc .line dt { color: var(--ink-2); }
.doc .line dd { margin: 0; font-family: var(--mono); font-size: 13.5px; text-align: right; white-space: nowrap; }

/* ---------- callout ---------- */

.note {
  border-left: 2px solid var(--copper);
  padding: 2px 0 2px 16px; margin: 20px 0;
  color: var(--ink-2); font-size: 15px; max-width: var(--measure);
}
.note strong { color: var(--ink); }

/* ---------- county card ---------- */

.county {
  display: block; text-decoration: none; color: inherit;
  border: 1px solid var(--rule-2); background: var(--paper-2);
  border-radius: 3px; padding: 20px 22px; margin: 22px 0;
  transition: border-color .15s ease, background .15s ease;
}
.county:hover { border-color: var(--accent); background: var(--paper-3); }
.county .hd { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.county .nm { font-family: var(--serif); font-size: 20px; font-weight: 600; }
.county .st {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--good); border: 1px solid currentColor; padding: 2px 7px; border-radius: 2px;
}
.county .sub { color: var(--ink-2); font-size: 14.5px; margin-top: 8px; }
.county .go { color: var(--accent); font-size: 14px; margin-top: 12px; display: inline-block; }

/* ---------- cta ---------- */

.cta {
  display: inline-block; background: var(--accent); color: var(--paper);
  text-decoration: none; padding: 13px 26px; border-radius: 3px;
  font-weight: 600; font-size: 15.5px; margin-top: 6px;
}
.cta:hover { filter: brightness(1.12); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--rule); margin-top: 72px; padding-top: 22px;
  font-size: 13px; line-height: 1.6; color: var(--ink-3); max-width: var(--measure);
}
footer p { max-width: none; margin-bottom: 12px; }
footer a { color: var(--ink-2); }
.legal { font-size: 12.3px; }