/* ==========================================================================
   PDFtoGrid — shared stylesheet
   Direction: continuous-feed green-bar printout. Pale ledger paper, mint
   bars, a red margin rule, and mono type for anything that is data. The
   converter itself (tool.css) is the one loud object on the site.
   ========================================================================== */

/* --- self-hosted type (no third-party font request) ------------------- */
@font-face { font-family: "Martian Mono"; src: url("/font-martian-mono.woff2") format("woff2");
  font-weight: 100 800; font-stretch: 75% 112.5%; font-display: swap; }
@font-face { font-family: "Literata"; src: url("/font-literata.woff2") format("woff2");
  font-weight: 200 900; font-style: normal; font-display: swap; }
@font-face { font-family: "Literata"; src: url("/font-literata-italic.woff2") format("woff2");
  font-weight: 200 900; font-style: italic; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/font-jetbrains-mono.woff2") format("woff2");
  font-weight: 100 800; font-display: swap; }

:root {
  --paper:  #FBFCFA;
  --bar:    #E4EDE3;   /* the green bar */
  --gutter: #EDF1EC;
  --ink:    #101614;
  --ink-2:  #2E3A35;
  --slate:  #55665D;
  --rule:   #C3D2C6;
  --redink: #B3261E;
  --deep:   #17241F;   /* footer and dark bars */

  --display: "Martian Mono", ui-monospace, monospace;
  --body:    "Literata", Georgia, serif;
  --data:    "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --max: 74rem;
  --read: 40rem;
  --shadow: 0 1px 0 rgba(16,22,20,.04), 0 18px 40px -28px rgba(16,22,20,.45);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--body); font-size: 1.0625rem; line-height: 1.68;
  font-optical-sizing: auto; -webkit-font-smoothing: antialiased;
}
::selection { background: var(--bar); }

h1, h2, h3, .kicker, .wordmark { font-family: var(--display); font-weight: 700; line-height: 1.15; }
h1 { font-size: clamp(1.85rem, 4.6vw, 3rem); letter-spacing: -.05em; margin: 0 0 .9rem; text-wrap: balance; }
h2 { font-size: clamp(1.15rem, 2.4vw, 1.45rem); letter-spacing: -.04em; text-wrap: balance; }
h3 { font-size: 1rem; letter-spacing: -.03em; }
p { margin: 0 0 1rem; }
a { color: var(--ink); text-decoration-color: var(--rule); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--redink); text-decoration-color: var(--redink); }
:focus-visible { outline: 2px solid var(--redink); outline-offset: 2px; }
code { font-family: var(--data); font-size: .86em; background: var(--bar); padding: .1em .35em; border-radius: 3px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }
@media (max-width: 620px) { .wrap { padding: 0 1rem; } }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* --- masthead --------------------------------------------------------- */
.masthead { border-bottom: 1px solid var(--rule); background: var(--paper); }
.masthead .wrap { display: flex; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; padding-block: .85rem; flex-wrap: wrap; }
.wordmark { font-size: .95rem; letter-spacing: -.06em; text-decoration: none; display: inline-flex; align-items: center; gap: .55rem; color: var(--ink); }
.wordmark:hover { color: var(--ink); }
.wordmark .tld { color: var(--redink); margin-left: -.55rem; }
.wordmark .mark {               /* the favicon, drawn in CSS: two bars and a red rule */
  width: 1.45rem; height: 1.45rem; border-radius: 4px; flex: none;
  background:
    linear-gradient(var(--redink), var(--redink)) 50% 50% / 2px 72% no-repeat,
    linear-gradient(var(--bar), var(--bar)) 50% 30% / 70% 3px no-repeat,
    linear-gradient(var(--bar), var(--bar)) 50% 70% / 70% 3px no-repeat,
    var(--ink);
}
.navlinks { display: flex; gap: .15rem; font-family: var(--data); font-size: .8rem; flex-wrap: wrap; }
.navlinks a { text-decoration: none; color: var(--slate); padding: .35rem .6rem; border-radius: 4px; }
.navlinks a:hover { color: var(--ink); background: var(--gutter); }
.navlinks a[aria-current="page"] { color: var(--ink); background: var(--bar); box-shadow: inset 0 -2px 0 var(--redink); }
@media (max-width: 760px) {
  .masthead .wrap { padding-block: .6rem .5rem; }
  .navlinks { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; width: calc(100% + 2rem); margin-inline: -1rem; padding-inline: .5rem; }
  .navlinks::-webkit-scrollbar { display: none; }
  .navlinks a { white-space: nowrap; }
}

/* --- page head -------------------------------------------------------- */
.pagehead { padding: 3rem 0 1.75rem; max-width: 50rem; }
@media (max-width: 620px) { .pagehead { padding: 2rem 0 1.25rem; } }
.kicker {
  font-family: var(--data); font-weight: 500; font-size: .85rem; letter-spacing: 0; color: var(--redink);
  display: flex; align-items: center; gap: .6rem; margin: 0 0 1rem;
}
.kicker::before { content: ""; width: 1.4rem; height: 2px; background: var(--redink); flex: none; }
.standfirst { font-size: clamp(1.08rem, 1.6vw, 1.22rem); line-height: 1.6; color: var(--slate); max-width: 44rem; margin: 0; text-wrap: pretty; }
.byline { font-family: var(--data); font-size: .78rem; color: var(--slate); margin: 1rem 0 0; }
.byline a { color: var(--ink-2); }

/* --- guide layout: article + converter card --------------------------- */
.layout { display: grid; grid-template-columns: minmax(0, var(--read)) minmax(0, 18rem); gap: 4.5rem; align-items: start; padding-bottom: 3rem; }
.layout--single { grid-template-columns: minmax(0, var(--read)); }
@media (max-width: 960px) { .layout { grid-template-columns: minmax(0, 1fr); gap: 2rem; } }
.article { min-width: 0; }
.article h2 { margin: 2.8rem 0 .8rem; padding-top: 1.1rem; border-top: 2px solid var(--ink); }
.article h3 { margin: 1.8rem 0 .4rem; }
.article ol, .article ul { padding-left: 1.3rem; margin: 0 0 1.1rem; }
.article li { margin-bottom: .55rem; }
.article li::marker { color: var(--redink); font-family: var(--data); font-size: .9em; }

.side { position: sticky; top: 1.5rem; }
@media (max-width: 960px) { .side { position: static; } }
.sidecard { border: 1px solid var(--ink); background: var(--paper); box-shadow: var(--shadow); }
.sidecard__title { margin: 0; padding: .8rem 1rem; background: var(--ink); color: var(--paper); font-family: var(--display); font-weight: 700; font-size: .78rem; letter-spacing: -.04em; line-height: 1.35; }
.sidecard ol { list-style: none; counter-reset: s; margin: 0; padding: 0; }
.sidecard li:nth-child(odd) { background: var(--bar); }
.sidecard li { counter-increment: s; display: flex; gap: .75rem; align-items: center; margin: 0; height: 2rem; padding-right: .75rem; font-family: var(--data); font-size: .78rem; }
.sidecard li::before { content: counter(s); width: 2rem; text-align: right; padding-right: .55rem; color: var(--slate); font-size: .68rem; border-right: 1px solid var(--redink); align-self: stretch; display: grid; align-content: center; background: var(--gutter); }
.sidecard .cta { margin: 1rem; display: flex; justify-content: center; }
.sidecard__note { margin: 0 1rem 1rem; font-family: var(--data); font-size: .7rem; color: var(--slate); line-height: 1.5; }

/* --- shared blocks ---------------------------------------------------- */
.cta {
  display: inline-flex; align-items: center; gap: .55rem;
  background: var(--ink); color: var(--paper); font-family: var(--display); font-size: .78rem; font-weight: 700; letter-spacing: -.02em;
  padding: .85rem 1.2rem; text-decoration: none; margin: .25rem 0 1.4rem; border-radius: 3px;
  box-shadow: 0 2px 0 var(--redink);
}
.cta::after { content: "→"; font-family: var(--data); }
.cta:hover { background: var(--redink); color: #fff; box-shadow: 0 2px 0 var(--ink); }
.callout { background: var(--bar); border-left: 3px solid var(--redink); padding: 1rem 1.2rem; margin: 1.5rem 0; }
.callout p:last-child { margin: 0; }
.contact { background: var(--bar); border-left: 3px solid var(--redink); padding: 1.1rem 1.2rem; margin: 1.5rem 0; font-family: var(--data); font-size: .9rem; }
.contact p { margin: 0 0 .4rem; } .contact p:last-child { margin: 0; }

details { border-top: 1px solid var(--rule); padding: .9rem 0; }
details:last-of-type { border-bottom: 1px solid var(--rule); }
summary { font-family: var(--display); font-weight: 700; font-size: .88rem; letter-spacing: -.035em; cursor: pointer; list-style: none; display: flex; gap: .75rem; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; color: var(--redink); font-weight: 700; flex: none; }
details[open] summary::before { content: "–"; }
details p { color: var(--slate); margin: .7rem 0 0 1.5rem; }

.related { background: var(--gutter); border: 1px solid var(--rule); padding: 1.2rem 1.3rem; margin-top: 2.5rem; }
.related h2 { margin: 0 0 .7rem; padding: 0; border: 0; font-size: 1rem; }
.related ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: .2rem 1rem; }
.related li { margin: 0; font-family: var(--data); font-size: .82rem; }
.related a { text-decoration: none; }
.related a::before { content: "→ "; color: var(--redink); }

/* comparison and data tables inside articles */
.article table, table.cmp { width: 100%; border-collapse: collapse; font-size: .9rem; margin: .5rem 0 1.5rem; }
.article table th, .article table td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.article table thead th, .article table tr:first-child th { font-family: var(--data); font-size: .74rem; font-weight: 600; color: var(--paper); background: var(--ink); border-color: var(--ink); }
.article table tbody tr:nth-child(even) td { background: var(--bar); }
@media (max-width: 620px) { .article table { display: block; overflow-x: auto; } }

.ad-slot { margin: 2.5rem 0; padding: .5rem 0; border-block: 1px dashed var(--rule); min-height: 6rem; display: grid; place-items: center; text-align: center; }
.ad-slot span { font-family: var(--data); font-size: .68rem; color: var(--slate); }

/* --- answer-first summary: a printout slip ---------------------------- */
.answer { margin: 0 0 2.2rem; border: 1px solid var(--ink); background: var(--paper); box-shadow: var(--shadow); }
.answer h2 {
  margin: 0; padding: .65rem 1rem; border: 0; background: var(--ink); color: var(--paper);
  font-size: .8rem; letter-spacing: -.03em; display: flex; justify-content: space-between; gap: 1rem;
}
.answer__lead { margin: 0; padding: 1rem 1.1rem 1rem 3.1rem; font-size: 1.06rem; line-height: 1.6; position: relative; }
.answer ol { list-style: none; counter-reset: a; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.answer li {
  counter-increment: a; position: relative; margin: 0; padding: .55rem 1.1rem .55rem 3.1rem;
  font-size: .96rem; line-height: 1.55; color: var(--ink-2);
}
.answer li:nth-child(odd) { background: var(--bar); }
.answer li::before {
  content: counter(a); position: absolute; left: 0; top: 0; bottom: 0; width: 2.3rem;
  display: grid; place-items: center; font-family: var(--data); font-size: .7rem; color: var(--slate);
  background: var(--gutter); border-right: 1px solid var(--redink);
}
.answer__lead::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2.3rem; background: var(--gutter); border-right: 1px solid var(--redink); }
.answer__eg { margin: 0; padding: .8rem 1.1rem .9rem 3.1rem; border-top: 1px solid var(--rule); font-size: .94rem; color: var(--slate); position: relative; }
.answer__eg::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2.3rem; background: var(--gutter); border-right: 1px solid var(--redink); }
.answer__eg strong { color: var(--ink); font-family: var(--display); font-size: .82rem; letter-spacing: -.03em; }
@media (max-width: 520px) {
  .answer__lead, .answer li, .answer__eg { padding-left: 2.6rem; }
  .answer li::before, .answer__lead::before, .answer__eg::before { width: 1.9rem; }
}

/* --- footer ----------------------------------------------------------- */
.site-footer { background: var(--deep); color: #A9BBB0; margin-top: 3rem; padding: 3rem 0 3.5rem; font-size: .9rem; }
.site-footer .wrap { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 2rem; }
@media (max-width: 900px) { .site-footer .wrap { grid-template-columns: repeat(2, minmax(0, 1fr)); } .site-footer .colophon { grid-column: 1 / -1; } }
@media (max-width: 480px) { .site-footer .wrap { grid-template-columns: 1fr; } }
.site-footer .wordmark { color: #fff; }
.site-footer .wordmark .tld { color: #FF8A80; }
.site-footer .colophon p { font-family: var(--data); font-size: .76rem; line-height: 1.6; margin: .9rem 0 0; max-width: 24rem; }
.site-footer nav { display: flex; flex-direction: column; gap: .45rem; font-family: var(--data); font-size: .8rem; }
.site-footer nav strong { font-family: var(--display); font-size: .78rem; color: #fff; letter-spacing: -.03em; margin-bottom: .3rem; }
.site-footer a { color: #D6E2DA; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; text-decoration-color: #FF8A80; }

@media (max-width: 600px) { body { font-size: 1rem; } }
@media print { .masthead, .site-footer, .side, .ad-slot { display: none !important; } }