/* Standfast Commerce — site stylesheet.
   Accessibility first: large type, high contrast, visible focus, no horizontal scroll.
   Colours are tokens on :root and are redefined for dark mode. */

:root {
  --bg: #ffffff;
  --bg-alt: #f3f4f6;
  --ink: #111111;
  --ink-soft: #333333;
  --line: #9a9a9a;
  --link: #0b4fa8;
  --link-visited: #5b2a86;
  --accent: #0b4fa8;
  --focus: #ffbf00;
  --warn-bg: #fff4d6;
  --warn-line: #8a5a00;
  --ok-bg: #e6f4ea;
  --ok-line: #1e6b3a;
  --no-bg: #fbe9e7;
  --no-line: #8a1c0f;
  --max: 46rem;
  --gutter: 16px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1115;
    --bg-alt: #1a1d23;
    --ink: #f4f4f4;
    --ink-soft: #d6d6d6;
    --line: #6b6b6b;
    --link: #8ab4ff;
    --link-visited: #c9a3ff;
    --accent: #8ab4ff;
    --focus: #ffd75e;
    --warn-bg: #3a2c00;
    --warn-line: #ffd75e;
    --ok-bg: #0f2e1a;
    --ok-line: #7fd39a;
    --no-bg: #3b1410;
    --no-line: #ff9d8c;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1115;
  --bg-alt: #1a1d23;
  --ink: #f4f4f4;
  --ink-soft: #d6d6d6;
  --line: #6b6b6b;
  --link: #8ab4ff;
  --link-visited: #c9a3ff;
  --accent: #8ab4ff;
  --focus: #ffd75e;
  --warn-bg: #3a2c00;
  --warn-line: #ffd75e;
  --ok-bg: #0f2e1a;
  --ok-line: #7fd39a;
  --no-bg: #3b1410;
  --no-line: #ff9d8c;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 20px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}
@media (max-width: 480px) { html { font-size: 19px; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  overflow-wrap: break-word;
}
a { overflow-wrap: anywhere; }

img, svg, video { max-width: 100%; height: auto; }

/* Skip link */
.skip {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  background: var(--ink);
  color: var(--bg);
  padding: 0.6rem 1rem;
  z-index: 100;
  text-decoration: none;
  font-weight: 700;
  border-radius: 6px;
}
.skip:focus { top: var(--gutter); outline: 4px solid var(--focus); }

/* Focus */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 4px solid var(--focus);
  outline-offset: 3px;
}

/* Links */
a { color: var(--link); text-decoration: underline; text-underline-offset: 0.15em; text-decoration-thickness: 0.09em; }
a:visited { color: var(--link-visited); }
a:hover { text-decoration-thickness: 0.18em; }

/* Layout */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.wrap-wide { max-width: 64rem; margin: 0 auto; padding: 0 var(--gutter); }

header.site {
  border-bottom: 2px solid var(--line);
  background: var(--bg);
}
header.site .wrap-wide {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
  padding-top: 1rem;
  padding-bottom: 0.5rem;
}
.brand {
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink);
  padding: 0.3rem 0;
}
.brand:visited { color: var(--ink); }
nav.main ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.2rem;
}
nav.main a {
  display: inline-block;
  padding: 0.55rem 0.7rem;
  min-height: 44px;
  line-height: 1.3;
  color: var(--ink);
  text-decoration: none;
  border-radius: 6px;
  border: 2px solid transparent;
}
nav.main a:visited { color: var(--ink); }
nav.main a:hover { text-decoration: underline; }
nav.main a[aria-current="page"] {
  border-color: var(--ink);
  font-weight: 700;
}

main { padding: 1.5rem 0 3rem; }
main > * + * { margin-top: 0; }

h1 { font-size: 2rem; line-height: 1.2; margin: 0.5rem 0 1rem; letter-spacing: -0.01em; }
h2 { font-size: 1.5rem; line-height: 1.25; margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.2rem; line-height: 1.3; margin: 1.75rem 0 0.5rem; }
@media (min-width: 853px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.7rem; }
}
p, li, dd, dt, td, th, label, legend { font-size: 1rem; }
p { margin: 0 0 1rem; }
ul, ol { padding-left: 1.4rem; margin: 0 0 1.25rem; }
li { margin: 0 0 0.5rem; }
li > ul, li > ol { margin-top: 0.5rem; }

.lead { font-size: 1.2rem; line-height: 1.5; color: var(--ink); }
.small { font-size: 0.9rem; color: var(--ink-soft); }
.proof { font-size: 0.95rem; font-weight: 700; color: var(--accent); margin: -0.35rem 0 1.25rem; }

hr { border: 0; border-top: 2px solid var(--line); margin: 2.5rem 0; }

/* Callouts */
.note, .warn, .ok, .no {
  padding: 1rem 1.1rem;
  border-left: 8px solid var(--line);
  background: var(--bg-alt);
  margin: 1.25rem 0;
  border-radius: 0 6px 6px 0;
}
.note > :last-child, .warn > :last-child, .ok > :last-child, .no > :last-child { margin-bottom: 0; }
.warn { background: var(--warn-bg); border-left-color: var(--warn-line); }
.ok { background: var(--ok-bg); border-left-color: var(--ok-line); }
.no { background: var(--no-bg); border-left-color: var(--no-line); }

blockquote {
  margin: 1.25rem 0;
  padding: 1rem 1.25rem;
  border-left: 8px solid var(--accent);
  background: var(--bg-alt);
  font-size: 1.15rem;
  line-height: 1.5;
}
blockquote p { margin: 0 0 0.5rem; }
blockquote cite { display: block; font-style: normal; font-size: 0.9rem; color: var(--ink-soft); margin-top: 0.5rem; }

/* Buttons */
.button {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  padding: 0.8rem 1.3rem;
  min-height: 48px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  border: 3px solid var(--ink);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1.3;
}
.button:visited { color: var(--bg); }
.button:hover { text-decoration: underline; }
.button.secondary { background: var(--bg); color: var(--ink); }
.button.secondary:visited { color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.25rem 0 1.5rem; }

/* Tables: a scrolling region keeps table semantics and stops page-level horizontal scroll */
.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  border: 2px solid var(--line);
  border-radius: 6px;
  -webkit-overflow-scrolling: touch;
}
.table-wrap:focus-visible { outline: 4px solid var(--focus); }
table { border-collapse: collapse; width: 100%; min-width: 640px; }
caption { text-align: left; font-weight: 700; padding: 0.75rem 0.9rem; caption-side: top; }
th, td { text-align: left; vertical-align: top; padding: 0.65rem 0.9rem; border-top: 1px solid var(--line); line-height: 1.45; overflow-wrap: normal; min-width: 8rem; }
caption { overflow-wrap: normal; }
thead th { background: var(--bg-alt); border-top: 0; }
tbody th { font-weight: 700; }
td.num, th.num { text-align: right; white-space: nowrap; }
.scroll-hint { font-size: 0.85rem; color: var(--ink-soft); margin: -0.75rem 0 1.25rem; }
@media (min-width: 700px) { .scroll-hint { display: none; } }

/* Tier cards and definition lists */
.tiers { display: grid; gap: 1.25rem; grid-template-columns: 1fr; margin: 1.5rem 0; }
@media (min-width: 853px) { .tiers { grid-template-columns: 1fr 1fr; } }
.tier {
  border: 2px solid var(--line);
  border-radius: 10px;
  padding: 1.1rem 1.2rem 0.5rem;
  background: var(--bg);
}
.tier h3 { margin-top: 0; }
.price { font-size: 1.6rem; font-weight: 800; margin: 0.25rem 0 0.5rem; letter-spacing: -0.01em; }
.price small { font-size: 0.95rem; font-weight: 500; color: var(--ink-soft); }
dl.facts { margin: 0 0 1rem; }
dl.facts dt { font-weight: 700; margin-top: 0.75rem; }
dl.facts dd { margin: 0.15rem 0 0; }

/* Forms */
form { margin: 1.25rem 0; }
fieldset { border: 2px solid var(--line); border-radius: 8px; padding: 1rem 1.1rem 0.5rem; margin: 0 0 1.5rem; min-width: 0; }
legend { font-weight: 700; padding: 0 0.4rem; }
.field { margin: 0 0 1.1rem; }
label { display: block; font-weight: 700; margin-bottom: 0.35rem; }
.hint { display: block; font-weight: 400; font-size: 0.9rem; color: var(--ink-soft); margin-top: 0.15rem; }
input[type="text"], input[type="email"], input[type="url"], input[type="tel"], input[type="date"],
input[type="file"], select, textarea {
  width: 100%;
  max-width: 100%;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg);
  border: 2px solid var(--ink-soft);
  border-radius: 6px;
  padding: 0.65rem 0.75rem;
  min-height: 48px;
}
textarea { min-height: 8rem; resize: vertical; }
.check { display: flex; align-items: flex-start; gap: 0.7rem; margin: 0 0 0.75rem; font-weight: 400; }
.check input { width: 1.5rem; height: 1.5rem; margin: 0.2rem 0 0; flex: 0 0 auto; }
button[type="submit"] { font: inherit; }
.status { margin-top: 1rem; }
.status:empty { display: none; }

/* Footer */
footer.site {
  border-top: 2px solid var(--line);
  margin-top: 2rem;
  padding: 1.5rem 0 2.5rem;
  background: var(--bg-alt);
}
footer.site ul { list-style: none; padding: 0; margin: 0 0 1rem; display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
footer.site a { color: var(--ink); }
footer.site a:visited { color: var(--ink); }
footer.site address { font-style: normal; margin: 0 0 1rem; }
footer.site p { margin: 0 0 0.75rem; }

/* Utility */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.sources { font-size: 0.95rem; }
.sources li { margin-bottom: 0.6rem; }
.toc { border: 2px solid var(--line); border-radius: 8px; padding: 1rem 1.2rem 0.5rem; margin: 1.25rem 0; background: var(--bg-alt); }
.toc h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.toc ol { margin-bottom: 0.5rem; }
kbd, code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; background: var(--bg-alt); padding: 0.05em 0.35em; border-radius: 4px; }
pre { background: var(--bg-alt); padding: 1rem; border-radius: 6px; overflow-x: auto; }