@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* --ink was #1B2A22 ("Forest Ink") until 2026-08-11, when it was swapped for Harbor
     Teal after a site-wide review (tested first on a standalone unilevel copy). To
     revert: change the hex below back to #1B2A22 — --ink-soft and every other token
     were untouched by the swap, so nothing else needs to change. See PROGRESS.md,
     "Dark ink color swap," for the full before/after and how this was tested. */
  --ink:#154240;
  --ink-soft:#3C4A40;
  --paper:#F0EEE3;
  --paper-raised:#E8E4D4;
  --gold:#C08A34;
  --teal:#3F6B57;
  --line:#D2CCB6;
  --rust:#9A4A2E;
  --max:1120px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',sans-serif;
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
}
h1,h2,h3{
  font-family:'Fraunces',serif;
  font-weight:600;
  margin:0;
  letter-spacing:-0.01em;
}
.mono{font-family:'IBM Plex Mono',monospace;}
a{color:inherit;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px;}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--teal);
}

/* header */
header{position:sticky;top:0;z-index:20;background:rgba(240,238,227,0.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;font-family:'Fraunces',serif;font-weight:600;font-size:18px;text-decoration:none;color:var(--ink);}
.brand-mark{width:22px;height:22px;flex-shrink:0;}
.navlinks{display:flex;gap:26px;font-size:14px;font-weight:500;}
.navlinks a{text-decoration:none;color:var(--ink-soft);border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .15s,color .15s;}
.navlinks a:hover,.navlinks a.active{border-color:var(--gold);color:var(--ink);}

/* language toggle — active side driven by <html lang>, not a class, so the
   English source markup is identical on every page and build_es.py only
   needs to rewrite hrefs, never swap which side looks "active". Sits as the
   last item inside .navlinks so it inherits the existing flex/gap/mobile
   collapse behavior for free. */
.lang-toggle{
  display:flex;align-items:center;gap:6px;padding-left:8px;
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.03em;
}
.lang-toggle a{text-decoration:none;color:var(--ink-soft);transition:color .15s;}
.lang-toggle a:hover{color:var(--ink);}
.lang-toggle .lang-sep{color:var(--line);}
html[lang="en"] .lang-toggle a[data-lang="en"],
html[lang="es"] .lang-toggle a[data-lang="es"]{
  color:var(--gold);font-weight:600;pointer-events:none;
}

/* mobile nav toggle — hidden checkbox + label, no JS needed */
.nav-toggle{position:absolute;opacity:0;pointer-events:none;}
.nav-toggle-label{display:none;cursor:pointer;padding:6px;margin:-6px 0;color:var(--ink);}
.nav-toggle-label svg{display:block;width:22px;height:22px;}
.nav-toggle-label .icon-close{display:none;}
.nav-toggle:checked ~ .nav-toggle-label .icon-open{display:none;}
.nav-toggle:checked ~ .nav-toggle-label .icon-close{display:block;}
.nav-toggle:focus-visible ~ .nav-toggle-label{outline:2px solid var(--teal);outline-offset:2px;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--teal);outline-offset:3px;}

/* buttons */
.cta-row{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:2px;font-size:14px;font-weight:600;text-decoration:none;border:1px solid transparent;transition:transform .15s ease, background .15s ease;cursor:pointer;}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--teal);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--paper-raised);}

/* page header (non-home pages) */
.page-hero{padding:56px 0 40px;border-bottom:1px solid var(--line);}
.page-hero h1{font-size:clamp(30px,4vw,44px);margin-top:12px;line-height:1.08;}
.page-hero p.lede{font-size:16px;color:var(--ink-soft);max-width:74ch;margin-top:16px;}
.crumb{font-size:13px;color:var(--ink-soft);}
.crumb a{text-decoration:underline;text-decoration-color:var(--line);}

/* dark stat/data card */
.dark-card{background:var(--ink);border-radius:4px;padding:26px 24px;color:var(--paper);}
.stat-row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed rgba(240,238,227,0.18);font-size:13px;font-family:'IBM Plex Mono',monospace;}
.stat-row:last-child{border-bottom:none;}
.stat-row b{color:var(--gold);font-weight:500;}
.disclaimer-note{font-size:12px;color:var(--ink-soft);margin-top:14px;font-style:italic;}

/* principle / info cards */
.p-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.p-card{background:var(--paper);padding:26px 22px;}
.p-card .num{font-family:'IBM Plex Mono',monospace;color:var(--gold);font-size:13px;}
.p-card h3{font-size:19px;margin-top:10px;}
.p-card p{font-size:14.5px;color:var(--ink-soft);margin-top:10px;}

/* page preview cards */
.pv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.pv-card{border:1px solid var(--line);padding:22px;border-radius:3px;text-decoration:none;color:var(--ink);display:block;transition:border-color .15s, transform .15s;}
.pv-card:hover{border-color:var(--gold);transform:translateY(-2px);}
.pv-card h3{font-size:18px;margin-top:10px;}
.pv-card p{font-size:13.5px;color:var(--ink-soft);margin-top:8px;}
.pv-card .go{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--teal);margin-top:16px;display:block;}

/* generic section */
section{padding:64px 0;}
section.tight{padding:48px 0;}
.section-line{border-top:1px solid var(--line);}
.section-raised{background:var(--paper-raised);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* footer / disclosure */
footer{border-top:1px solid var(--line);padding:40px 0 60px;margin-top:20px;}
.disclosure{background:var(--paper-raised);border-left:3px solid var(--rust);padding:18px 20px;font-size:13px;color:var(--ink-soft);max-width:760px;}
.disclosure b{color:var(--ink);}
.foot-bottom{display:flex;justify-content:space-between;margin-top:28px;font-size:12.5px;color:var(--ink-soft);flex-wrap:wrap;gap:10px;}
.report-bug-link{color:var(--ink-soft);text-decoration:none;border-bottom:1px solid transparent;}
.report-bug-link:hover{color:var(--ink);border-color:var(--gold);}

/* FAQ accordion */
.faq{margin-top:24px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  cursor:pointer;padding:18px 30px 18px 2px;
  font-family:'Fraunces',serif;font-weight:500;font-size:16px;
  list-style:none;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'+';position:absolute;right:4px;top:16px;
  font-family:'IBM Plex Mono',monospace;color:var(--gold);font-size:18px;
}
.faq-item[open] summary::after{content:'\2013';}
.faq-item .faq-a{padding:0 30px 20px 2px;color:var(--ink-soft);font-size:14.5px;max-width:82ch;}
.faq-item .faq-a a{text-decoration:underline;}

@media (max-width:860px){
  .p-grid{grid-template-columns:1fr;}
  .pv-grid{grid-template-columns:1fr;}

  .nav-toggle-label{display:block;}
  .navlinks{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;gap:0;
    background:var(--paper);border:1px solid var(--line);border-top:none;
    padding:6px 28px 14px;
    box-shadow:0 12px 24px rgba(21,66,64,0.1);
  }
  .navlinks a{padding:12px 0;border-bottom:1px solid var(--line);}
  .navlinks a:last-child{border-bottom:none;}
  .nav-toggle:checked ~ .navlinks{display:flex;}

  .lang-toggle{padding:12px 0 0;}
  .lang-toggle a{padding:0;border-bottom:none;}
}