/* NEXXVU update center install page. The one stylesheet of the page; system fonts only; no external resources.
   Design tokens are the Central dashboard's (central_driver/.../dashboard_static/nexxvu.css), so both look alike. */
:root {
  --bg: #f4f6f8; --panel: #ffffff; --sunk: #eef1f4; --line: #d9e0e6; --line-strong: #b7c3cd;
  --ink: #14202b; --ink-2: #4c5d6c; --ink-3: #7a8a98;
  --brand: #0d6f78; --brand-ink: #0a565e; --brand-soft: #dcefef;
  --ok: #1f7a46; --ok-soft: #dcf0e3; --warn: #a3650a; --warn-soft: #f8ebd2; --bad: #b0352c; --bad-soft: #f7e0dc;
  --info: #3c5bb0; --info-soft: #e1e8f8;
  --radius: 8px; --gap: 14px;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f151b; --panel: #172029; --sunk: #111a22; --line: #26333f; --line-strong: #3a4a58;
    --ink: #e4ecf2; --ink-2: #a3b3c0; --ink-3: #7f909e;
    --brand: #3fb0ba; --brand-ink: #7fd2da; --brand-soft: #16323a;
    --ok: #5cc28a; --ok-soft: #15301f; --warn: #e0a84a; --warn-soft: #33260f; --bad: #ec8a80; --bad-soft: #3a1c19;
    --info: #8ea9f0; --info-soft: #1b2440;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--sans); }
a { color: var(--brand-ink); }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.mono { font-family: var(--mono); font-size: .92em; }
.note { color: var(--ink-2); }
.sr-only, .offscreen { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--brand); outline-offset: 2px; }
.skip { position: absolute; left: 16px; top: -48px; z-index: 10; background: var(--panel); color: var(--ink);
  padding: 8px 12px; border: 2px solid var(--brand); border-radius: 6px; }
.skip:focus { top: 8px; }

/* top bar (as the dashboard's) */
.topbar { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 16px; padding: 10px 16px; background: var(--panel);
  border-bottom: 1px solid var(--line); }
.topbar p { margin: 0; }
.brand { font-weight: 700; letter-spacing: .14em; font-size: 15px; color: var(--brand); }
.brand small { font-weight: 500; letter-spacing: .02em; color: var(--ink-2); margin-left: 6px; }
.topbar-hosts { margin-left: auto !important; font-size: 12.5px; color: var(--ink-2); overflow-wrap: anywhere; }

.page { max-width: 60rem; margin: 0 auto; padding: 0 16px; }
.hero { padding: 24px 0 8px; }
h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 6px; }
.lede { margin: 0; color: var(--ink-2); }
h2 { font-size: 1.3rem; margin: 0 0 10px; }
h3 { font-size: 1.02rem; margin: 22px 0 6px; }
.card h3 { margin: 0 0 10px; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
p { margin: 8px 0; }
.status { margin: 14px 0 0; padding: 9px 12px; border-radius: var(--radius); background: var(--warn-soft); }
.callout { padding: 9px 12px; border-radius: var(--radius); background: var(--bad-soft); }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11.5px; font-weight: 600;
  white-space: nowrap; vertical-align: 1px; margin-right: 4px; }
.b-warn { background: var(--warn); color: var(--panel); }

/* tabs (shown by the page script; without it the sections are stacked and the contents list is used) */
.tabs { display: flex; flex-wrap: wrap; gap: 2px; margin: 18px 0 0; padding: 3px; background: var(--sunk);
  border: 1px solid var(--line); border-radius: var(--radius); }
.tabs button { border: 0; background: none; padding: 7px 12px; border-radius: 6px; cursor: pointer; color: var(--ink-2); }
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] { background: var(--panel); color: var(--brand-ink); font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.toc { margin: 16px 0 0; padding: 10px 16px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); }
.toc ol { margin: 0; padding-left: 1.4rem; columns: 2 14rem; }
.js .toc { display: none; }

main { display: grid; gap: var(--gap); padding: 14px 0 8px; }
.tabpanel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px 20px;
  min-width: 0; }
.grid { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin: 14px 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; min-width: 0; }
.tabpanel > .card { margin: 14px 0; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; overflow-wrap: anywhere; min-width: 0; }
.hashes { margin-top: 12px; align-items: center; }
.hashes dd { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
ul.compact, ol.compact { margin: 6px 0; padding-left: 1.3rem; }
ul.compact li, ol.compact li { margin: 3px 0; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 600; }
thead th { font-size: 11px; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3);
  border-bottom: 1px solid var(--line-strong); }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; overflow-wrap: break-word; }

/* commands */
code, pre, kbd { font-family: var(--mono); font-size: .88rem; }
code, kbd { background: var(--sunk); padding: 1px 4px; border-radius: 4px; overflow-wrap: anywhere; }
pre { margin: 6px 0 10px; padding: 12px 14px; background: var(--sunk); border: 1px solid var(--line); border-radius: var(--radius);
  overflow-x: auto; white-space: pre; max-width: 100%; line-height: 1.5; }
pre code { background: none; padding: 0; overflow-wrap: normal; }
.code { display: grid; min-width: 0; }
.copy { border: 1px solid var(--line-strong); background: var(--panel); color: var(--ink-2); border-radius: 6px;
  padding: 2px 10px; font-size: 12.5px; cursor: pointer; }
.copy:hover { color: var(--brand-ink); border-color: var(--brand); }
.code > .copy { order: -1; justify-self: end; margin: 2px 0 -2px; }
pre.prompt { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 32rem; overflow-y: auto; }
ol.steps { padding-left: 1.4rem; margin: 6px 0; }
ol.steps > li { margin-bottom: 14px; }
ol.steps > li::marker { font-weight: 700; color: var(--brand); }
code.hash { font-size: .82rem; }

details { margin: 8px 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 0 12px; background: var(--panel); }
details[open] { padding-bottom: 6px; }
summary { cursor: pointer; padding: 8px 0; color: var(--brand-ink); font-weight: 600; }

footer { padding: 18px 0 32px; color: var(--ink-3); font-size: 13px; }

@media (max-width: 720px) {
  body { font-size: 15px; }
  .page { padding: 0 16px; }
  .tabpanel { padding: 14px 14px 16px; }
  .tabs { flex-direction: column; }
  .tabs button { text-align: left; }
  .topbar-hosts { margin-left: 0 !important; width: 100%; }
  .kv { grid-template-columns: 1fr; gap: 0; }
  .kv dd { margin-bottom: 6px; }
  h1 { font-size: 1.4rem; }
}
@media print {
  .tabs, .copy, .skip { display: none !important; }
  .js .tabpanel[hidden] { display: block !important; }
  .toc { display: block; }
  details { border: 0; }
}