/* Restivo Homelab — identity stylesheet (v3, from Claude Design project "Restivo Homelab Visual Identity", 2026-09-02)
   Newsreader (headings) · Public Sans (body) · Source Code Pro (code)
   Light and dark tokens; every text/background pair ≥ 4.5:1. Fonts are linked from each page's <head>. */

/* ---------- Tokens ---------- */
:root {
  --bg: #F6F3EC;        /* Paper */
  --surface: #FDFCF9;   /* Sheet */
  --ink: #1C1B18;       /* Ink */
  --muted: #5C5A53;     /* Graphite */
  --rule: #D6D1C6;      /* Rule */
  --primary: #1D3FB2;   /* Cobalt */
  --on-primary: #FFFFFF;
  --success: #1D6B3B;   /* Verified */
  --warn: #8A5600;      /* Caution */

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Source Code Pro", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --fs-h1: clamp(34px, 1.6vw + 24px, 46px);
  --fs-h2: 30px;
  --fs-h3: 19px;
  --fs-body: 17px;
  --fs-small: 14px;
  --fs-code: 14.5px;
  --lh-head: 1.1;
  --lh-body: 1.55;

  --wrap: 960px;
  --prose: 720px;
  --gutter: 24px;
  --radius: 2px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181B;        /* Slate */
    --surface: #1F2024;   /* Panel */
    --ink: #ECE8DF;       /* Bone */
    --muted: #A6A297;     /* Ash */
    --rule: #35373D;      /* Rule */
    --primary: #8AA6FF;   /* Cobalt lite */
    --on-primary: #17181B;
    --success: #6CC98A;   /* Verified */
    --warn: #E3B75C;      /* Caution */
    color-scheme: dark;
  }
}
/* Optional manual override, same values as the media query */
:root[data-theme="dark"] {
  --bg:#17181B; --surface:#1F2024; --ink:#ECE8DF; --muted:#A6A297; --rule:#35373D;
  --primary:#8AA6FF; --on-primary:#17181B; --success:#6CC98A; --warn:#E3B75C;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg:#F6F3EC; --surface:#FDFCF9; --ink:#1C1B18; --muted:#5C5A53; --rule:#D6D1C6;
  --primary:#1D3FB2; --on-primary:#FFFFFF; --success:#1D6B3B; --warn:#8A5600;
  color-scheme: light;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 var(--fs-body)/var(--lh-body) var(--sans);
  font-feature-settings: "kern", "liga";
  text-rendering: optimizeLegibility;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.prose { max-width: var(--prose); margin: 0 auto; padding: 0 var(--gutter); }
main, main.wrap, main.prose { padding-top: 40px; padding-bottom: 72px; }

h1, h2, h3, h4 { margin: 0; color: var(--ink); text-wrap: balance; }
h1 {
  font: 500 var(--fs-h1)/var(--lh-head) var(--serif);
  letter-spacing: -0.015em;
  margin-bottom: 20px;
}
h2 {
  font: 500 var(--fs-h2)/1.15 var(--serif);
  letter-spacing: -0.01em;
  margin: 56px 0 18px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}
h3 {
  font: 600 var(--fs-h3)/1.3 var(--sans);
  margin: 32px 0 8px;
}
p, ul, ol { margin: 0 0 1.05em; }
ul, ol { padding-left: 1.4em; }
li { margin-bottom: 0.4em; }
li::marker { color: var(--muted); }
strong { font-weight: 600; }
em { font-style: italic; }
small, .small { font-size: var(--fs-small); line-height: 1.45; }
.lede {
  font: 400 21px/1.4 var(--serif);
  color: var(--ink);
  margin-bottom: 1.2em;
}
.note {
  font-size: var(--fs-small);
  color: var(--muted);
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
hr {
  border: 0;
  height: 3px;
  margin: 48px 0;
  background:
    linear-gradient(var(--ink), var(--ink)) top / 100% 1px no-repeat,
    linear-gradient(var(--rule), var(--rule)) bottom / 100% 1px no-repeat;
}
img { max-width: 100%; height: auto; display: block; }

/* Links */
a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--primary) 45%, transparent);
}
a:hover { text-decoration-color: currentColor; }
h2 a, h3 a { color: inherit; text-decoration: none; }
h2 a:hover, h3 a:hover { color: var(--primary); }

/* Focus rings */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius);
}
.btn:focus-visible { outline-offset: 2px; }

/* Skip link */
.skip-link {
  position: absolute; left: 12px; top: -100px;
  padding: 8px 12px;
  background: var(--ink); color: var(--bg);
  font: 600 var(--fs-small)/1 var(--sans);
  text-decoration: none; z-index: 100;
}
.skip-link:focus { top: 12px; }

/* ---------- Header + nav ---------- */
header.site {
  background: var(--bg);
  border-bottom: 1px solid var(--ink);
  box-shadow: 0 4px 0 -3px var(--rule); /* second hairline: a double rule */
}
header.site .wrap {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding-top: 18px; padding-bottom: 16px;
}
.brand {
  font: 500 22px/1 var(--serif);
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--primary); }
nav { display: flex; gap: 22px; flex-wrap: wrap; }
nav a {
  font: 600 13px/1 var(--sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
nav a:hover, nav a[aria-current="page"] { border-bottom-color: var(--primary); color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: 56px;
  align-items: start;
  padding-top: 24px;
}
.hero-copy p { font-size: 18px; max-width: 34em; }
.hero-copy p:first-of-type { font: 400 21px/1.4 var(--serif); }

.checklist {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--ink);
  padding: 20px 22px 22px;
}
.checklist h2 {
  font: 600 var(--fs-h3)/1.3 var(--sans);
  margin: 0 0 6px; padding: 0; border: 0;
}
.checklist > p { font-size: var(--fs-small); color: var(--muted); margin-bottom: 12px; }
.tally {
  font: 600 13px/1 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.checklist ul { list-style: none; padding: 0; margin: 0 0 18px; }
.checklist li { margin: 0; border-bottom: 1px solid var(--rule); }
.checklist li:last-child { border-bottom: 0; }
.checklist label {
  display: grid; grid-template-columns: 18px 1fr; gap: 12px;
  align-items: start;
  padding: 9px 0;
  font-size: var(--fs-small); line-height: 1.45;
  cursor: pointer;
}
.checklist input[type="checkbox"] {
  width: 18px; height: 18px; margin: 2px 0 0;
  accent-color: var(--success);
}
.checklist input:checked + span,
.checklist li:has(input:checked) { color: var(--muted); }
.checklist .btn { width: 100%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  background: var(--primary);
  color: var(--on-primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  font: 600 15px/1.2 var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background .12s, border-color .12s;
}
.btn:hover { background: color-mix(in srgb, var(--primary) 88%, var(--ink)); border-color: color-mix(in srgb, var(--primary) 88%, var(--ink)); color: var(--on-primary); }
.btn:active { transform: translateY(1px); }
.btn.quiet {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn.quiet:hover { background: var(--surface); color: var(--primary); border-color: var(--primary); }

/* ---------- Product boxes ---------- */
.cardbox {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}
.cardbox:last-of-type { border-bottom: 1px solid var(--rule); }
.cardbox img {
  width: 168px;
  border: 1px solid var(--rule);
  background: var(--surface);
}
.cardbox h3 { margin: 4px 0 8px; font: 500 26px/1.15 var(--serif); letter-spacing: -0.01em; }
.cardbox h2 { margin: 4px 0 8px; padding: 0; border: 0; font: 500 26px/1.15 var(--serif); letter-spacing: -0.01em; }
.cardbox p { margin-bottom: 16px; color: var(--ink); max-width: 38em; }
.buyrow { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.price {
  font: 500 26px/1 var(--serif);
  font-variant-numeric: tabular-nums lining-nums;
  color: var(--ink);
}

/* Purchase box on product pages */
.cardbox.buy {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--ink);
  padding: 28px;
  margin: 32px 0;
}
.cardbox.buy .price { font-size: 32px; }
.cardbox.buy p { margin-bottom: 12px; }
.cardbox.buy .buyrow { margin: 6px 0 16px; }
.upcoming {
  font: 600 var(--fs-small)/1.45 var(--sans);
  color: var(--warn);
}
.upcoming::before { content: "\25B2\00A0"; font-size: 10px; vertical-align: 2px; }

/* ---------- Email capture ---------- */
.capture {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--primary);
  padding: 26px 28px 24px;
  margin: 48px 0;
}
.capture h2 { margin: 0 0 8px; padding: 0; border: 0; font-size: 26px; }
.capture p { max-width: 44em; }
.capture p:last-child { font-size: var(--fs-small); color: var(--muted); margin: 10px 0 0; }
form.signup {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin: 16px 0 0;
}
form.signup label { display: block; width: 100%; font: 600 13px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
form.signup input[type="email"] {
  flex: 1 1 260px;
  min-height: 44px;
  padding: 10px 12px;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--muted);
  border-radius: var(--radius);
  font: 400 16px/1.2 var(--sans);
}
form.signup input[type="email"]::placeholder { color: var(--muted); }
form.signup input[type="email"]:focus-visible { border-color: var(--primary); outline-offset: 0; }

/* ---------- Guide index entries ---------- */
.entry { padding: 28px 0; border-top: 1px solid var(--rule); }
.entry:last-of-type { border-bottom: 1px solid var(--rule); }
.entry h2 { margin: 0 0 10px; padding: 0; border: 0; font-size: 26px; }
.entry p { max-width: 40em; }
.entry > a { font-weight: 600; }

/* ---------- Article body ---------- */
.prose h2 { margin-top: 56px; }
.prose .capture h2, .prose .entry h2 { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose li { margin-bottom: 0.55em; }
.prose blockquote { margin: 0 0 1.2em; padding-left: 20px; border-left: 2px solid var(--ink); font-style: italic; }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 32px;
  font-size: 15px;
  line-height: 1.4;
  font-variant-numeric: tabular-nums lining-nums;
}
thead th {
  font: 600 12.5px/1.3 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  padding: 0 12px 8px 0;
  border-bottom: 1px solid var(--ink);
}
td {
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
td:first-child, th:first-child { padding-left: 0; }
td:last-child, th:last-child { padding-right: 0; }
tbody tr:hover td { background: var(--surface); }

/* Code */
code, kbd, samp {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1px 5px;
}
pre {
  font: 400 var(--fs-code)/1.55 var(--mono);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-left: 1px solid var(--ink);
  padding: 18px 20px;
  margin: 24px 0 32px;
  overflow-x: auto;
  tab-size: 4;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* ---------- Footer ---------- */
footer.site {
  border-top: 1px solid var(--ink);
  box-shadow: inset 0 4px 0 -3px var(--rule);
  padding: 28px 0 40px;
  font-size: var(--fs-small);
  color: var(--muted);
}
footer.site .wrap {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
footer.site p { margin: 0; }
footer.site a { color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; gap: 36px; }
  :root { --fs-h2: 26px; }
}
@media (max-width: 560px) {
  :root { --gutter: 18px; --fs-body: 16px; --fs-h2: 24px; }
  main, main.wrap, main.prose { padding-top: 28px; padding-bottom: 56px; }
  header.site .wrap { padding-top: 14px; padding-bottom: 12px; gap: 12px; }
  nav { gap: 14px 18px; }
  .hero-copy p, .lede, .hero-copy p:first-of-type { font-size: 18px; }
  .cardbox { grid-template-columns: 104px minmax(0, 1fr); gap: 16px; }
  .cardbox img { width: 104px; }
  .cardbox h3, .cardbox h2 { font-size: 22px; }
  .cardbox.buy { grid-template-columns: 1fr; padding: 20px; }
  .cardbox.buy img { width: 140px; }
  .capture { padding: 20px 18px; }
  .btn { width: 100%; }
  .buyrow .btn { width: auto; }
  table { font-size: 14px; display: block; overflow-x: auto; }
}
@media print {
  header.site, footer.site, .capture, .skip-link { display: none; }
  body { background: #fff; color: #000; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* Honeypot: a field only a bot fills in. */
.hp { position: absolute; left: -9999px; }
