/* MCS-150 Update Tracker. A reference document with one tool on it: ink, paper, hairline rules.
   Colour is reserved for status. No shadows, gradients or decorative imagery. */

:root {
  --ink: #16181b;
  --muted: #5d626a;
  --paper: #fbfaf7;
  --panel: #f2f0eb;
  --rule: #d9d5cc;
  --link: #16181b;
  --ok: #1d6a3f;   --ok-bg: #e8f2ec;
  --warn: #8a5300; --warn-bg: #f8eedc;
  --bad: #a3261a;  --bad-bg: #f8e5e2;
  --focus: #2c5bd6;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ebe8e1; --muted: #a09c94; --paper: #141517; --panel: #1d1f22; --rule: #33363b; --link: #ebe8e1;
    --ok: #7fcf9e; --ok-bg: #16281e; --warn: #e8b66a; --warn-bg: #2c2314; --bad: #f19a8f; --bad-bg: #2e1a18;
    --focus: #8fb0ff; color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 17px/1.6 var(--sans); font-variant-numeric: tabular-nums;
}
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.wrap { max-width: 46rem; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-head { border-bottom: 1px solid var(--rule); }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 24px; padding-top: 16px; padding-bottom: 14px; }
.wordmark { font-weight: 700; letter-spacing: -0.01em; text-decoration: none; font-size: 17px; }
.wordmark span { font-family: var(--mono); font-weight: 600; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 15px; }
.site-nav a { text-decoration: none; color: var(--muted); }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--ink); text-decoration: underline; }
.independent { background: var(--panel); border-bottom: 1px solid var(--rule); font-size: 14px; color: var(--muted); }
.independent .wrap { padding-top: 7px; padding-bottom: 7px; }

/* Type */
main { padding: 36px 0 56px; }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 14px; }
h2 { font-size: 22px; line-height: 1.25; letter-spacing: -0.01em; margin: 44px 0 10px; padding-top: 18px; border-top: 1px solid var(--rule); }
h3 { font-size: 17px; margin: 26px 0 4px; }
p, ul, ol { margin: 0 0 14px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 6px; }
.answer { font-size: 19px; line-height: 1.55; }
.meta { font-size: 14px; color: var(--muted); }
code, .mono { font-family: var(--mono); font-size: 0.94em; }
small { font-size: 14px; color: var(--muted); }

/* Lookup */
.lookup { margin: 26px 0 8px; padding: 20px; background: var(--panel); border: 1px solid var(--rule); }
.lookup label { display: block; font-weight: 600; margin-bottom: 6px; }
.lookup .row { display: flex; gap: 8px; }
.lookup input {
  flex: 1; min-width: 0; font: 600 22px/1 var(--mono); letter-spacing: 0.04em;
  padding: 12px 12px; color: var(--ink); background: var(--paper);
  border: 1px solid var(--ink); border-radius: 2px;
}
.lookup input::placeholder { color: var(--muted); font-weight: 400; letter-spacing: 0; }
button, .button {
  font: 600 16px/1 var(--sans); padding: 14px 20px; border: 1px solid var(--ink); border-radius: 2px;
  background: var(--ink); color: var(--paper); cursor: pointer; text-decoration: none; display: inline-block;
}
.button.secondary { background: transparent; color: var(--ink); }
.lookup .hint { margin: 8px 0 0; font-size: 14px; color: var(--muted); }

.result { margin-top: 18px; border-top: 1px solid var(--rule); padding-top: 16px; }
.result[hidden] { display: none; }
.result .who { font-family: var(--mono); font-size: 15px; margin: 0 0 12px; }
.result dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0 0 14px; }
.result dt { color: var(--muted); }
.result dd { margin: 0; font-weight: 600; }
.status { display: inline-block; font-size: 14px; font-weight: 700; padding: 3px 8px; border-radius: 2px; border: 1px solid; }
.status.ok { color: var(--ok); background: var(--ok-bg); }
.status.warn { color: var(--warn); background: var(--warn-bg); }
.status.bad { color: var(--bad); background: var(--bad-bg); }
.status.plain { color: var(--muted); background: transparent; }
.verdict { margin: 12px 0 14px; }
.notice { border-left: 3px solid var(--warn); padding: 4px 0 4px 12px; margin: 12px 0; font-size: 15px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 14px 0 6px; }
.source { font-size: 14px; color: var(--muted); margin: 10px 0 0; }
.error { color: var(--bad); font-weight: 600; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 8px 0 18px; font-size: 16px; }
th, td { text-align: left; padding: 8px 10px 8px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-size: 14px; color: var(--muted); font-weight: 600; border-bottom-color: var(--ink); }
td.mono { font-family: var(--mono); }

/* Guides list */
.guides { list-style: none; padding: 0; border-top: 1px solid var(--rule); }
.guides li { margin: 0; border-bottom: 1px solid var(--rule); padding: 12px 0; }
.guides a { font-weight: 600; }
.guides p { margin: 2px 0 0; font-size: 15px; color: var(--muted); }

.steps { counter-reset: step; list-style: none; padding: 0; }
.steps > li { counter-increment: step; position: relative; padding-left: 40px; margin-bottom: 16px; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 26px; height: 26px; border: 1px solid var(--ink); font: 600 14px/24px var(--mono); text-align: center; }

.faq h3 { margin-top: 22px; }

/* Footer */
.site-foot { border-top: 1px solid var(--rule); font-size: 14px; color: var(--muted); }
.site-foot .wrap { padding-top: 22px; padding-bottom: 36px; }
.site-foot p { margin: 0 0 8px; }
.site-foot a { color: var(--muted); }

@media (max-width: 560px) {
  body { font-size: 16px; }
  h1 { font-size: 28px; }
  .lookup { padding: 14px; margin-left: -6px; margin-right: -6px; }
  .lookup .row { flex-direction: column; }
  .lookup input { font-size: 20px; }
  .result dl { grid-template-columns: 1fr; gap: 0; }
  .result dd { margin-bottom: 8px; }
}