/* Freddy Labs — studio site styles. Shares the design tokens of freddy.work
   (paper palette, Instrument Serif / Inter / JetBrains Mono), tuned calmer. */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  color-scheme: light;
  --paper: #f3ede0;
  --paper-2: #ebe3d1;
  --paper-3: #e0d5bc;
  --ink: #1a1814;
  --ink-2: #3a352c;
  --ink-soft: #6b6558;
  --rule: #1a18141a;
  --rule-strong: #1a181433;
  --amber: #c85a1f;
  --amber-soft: #e8a472;
  --cyan: #2d5c6b;
  --ok: #3f6b3a;
  --warn: #b8841a;
  --red: #a13826;

  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(rgba(26,24,20,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.09 0 0 0 0 0.08 0 0 0 0.06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  opacity: 0.35;
  mix-blend-mode: multiply;
}

a { color: inherit; }
p { margin: 0; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; margin: 0; letter-spacing: -0.01em; line-height: 1.08; }
h1 { font-size: clamp(44px, 6.5vw, 84px); }
h2 { font-size: clamp(34px, 4.2vw, 56px); }
h3 { font-size: 26px; }
h4 { font-size: 20px; }
.display-italic { font-style: italic; color: var(--amber); }
em { font-style: italic; }

/* --- Accessibility --- */
.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 100;
  padding: 8px 12px; background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 13px; text-decoration: none;
}
.skip-link:focus { top: 8px; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* --- Nav --- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-weight: 600; font-size: 14px; letter-spacing: -0.01em;
  text-decoration: none; color: var(--ink);
}
.logo-mark { width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; }
.logo-mark svg { display: block; }
.logo small { color: var(--ink-soft); font-weight: 400; margin-left: 2px; font-size: 14px; }
.nav-links { display: flex; align-items: center; gap: 28px; font-family: var(--mono); font-size: 13px; flex-wrap: wrap; }
.nav-links a {
  text-decoration: none; color: var(--ink-2); padding: 6px 0;
  border-bottom: 1px solid transparent; transition: border-color .15s, color .15s;
}
.nav-links a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.nav-links a.active { color: var(--ink); border-bottom-color: var(--amber); }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 13px; font-weight: 500; text-decoration: none; cursor: pointer;
  transition: transform .1s ease, box-shadow .15s;
  box-shadow: 3px 3px 0 var(--ink);
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: none; border-color: var(--rule-strong); }
.btn.ghost:hover { box-shadow: 3px 3px 0 var(--ink); background: var(--paper-2); }
.btn.amber { background: var(--amber); border-color: var(--amber); color: var(--paper); box-shadow: 3px 3px 0 var(--ink); }
.btn-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

/* --- Layout --- */
main { position: relative; z-index: 2; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 760px; }
section { padding: 88px 0; position: relative; }
section + section { border-top: 1px solid var(--rule); }
.hero { padding-top: 72px; padding-bottom: 56px; }
.lede { font-size: 18px; color: var(--ink-2); max-width: 60ch; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; align-items: start; }
.cols-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 48px; align-items: start; }
.cols-2-1 { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: start; }
.stack > * + * { margin-top: 16px; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 36px; } .mt-5 { margin-top: 48px; }

.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-soft); display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before { content: ''; width: 6px; height: 6px; background: var(--amber); display: inline-block; flex: none; }

.divider-ascii {
  font-family: var(--mono); color: var(--ink-soft); font-size: 12px; letter-spacing: 0.2em;
  overflow: hidden; white-space: nowrap; user-select: none;
}

/* --- Ledger (mono definition list) --- */
.ledger {
  margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 0;
  font-family: var(--mono); font-size: 13px; border-top: 1px solid var(--rule-strong);
}
.ledger dt, .ledger dd { margin: 0; padding: 10px 0; border-bottom: 1px dashed var(--rule-strong); }
.ledger dt { color: var(--ink-soft); padding-right: 24px; letter-spacing: 0.06em; text-transform: uppercase; font-size: 11px; padding-top: 12px; }
.ledger dd { color: var(--ink); }
.ledger dd a { color: var(--amber); text-decoration: none; border-bottom: 1px solid var(--amber-soft); }
.ledger dd a:hover { border-bottom-color: var(--amber); }

/* --- Cards --- */
.card { background: var(--paper); border: 1px solid var(--rule-strong); padding: 28px; position: relative; }
.card.elevated { box-shadow: 4px 4px 0 var(--ink); border-color: var(--ink); }
.card h3 { margin-top: 12px; }
.card p { margin-top: 12px; color: var(--ink-2); }
.card .btn-row { margin-top: 22px; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11px; padding: 3px 8px;
  border: 1px solid var(--rule-strong); background: var(--paper); letter-spacing: 0.04em; white-space: nowrap;
}
.tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ok); }
.tag.amber .dot { background: var(--amber); }
.tag.warn .dot { background: var(--warn); }
.tag.cyan .dot { background: var(--cyan); }

/* --- Numbered principles --- */
.principles { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.principles li { display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 26px 0; border-bottom: 1px solid var(--rule); }
.principles .num { font-family: var(--mono); font-size: 12px; color: var(--amber); padding-top: 6px; }
.principles h3 { font-size: 24px; }
.principles p { margin-top: 8px; color: var(--ink-2); max-width: 62ch; }

/* --- Feature grid --- */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--rule-strong); border: 1px solid var(--rule-strong); }
.feature { background: var(--paper); padding: 24px; }
.feature h3 { font-size: 22px; }
.feature .k { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); letter-spacing: 0.08em; text-transform: uppercase; }
.feature p { margin-top: 10px; color: var(--ink-2); font-size: 14px; }

/* --- Callout --- */
.callout { border: 1px solid var(--ink); border-left: 6px solid var(--amber); padding: 22px 26px; background: var(--paper-2); }
.callout .k { font-family: var(--mono); font-size: 11px; color: var(--amber); letter-spacing: 0.12em; text-transform: uppercase; }
.callout p { margin-top: 10px; color: var(--ink); }
.callout.plain { border-left-color: var(--cyan); }
.callout.plain .k { color: var(--cyan); }

/* --- Long-form prose (policies, support) --- */
.prose { max-width: 76ch; }
.prose h2 { font-size: 32px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--rule); }
.prose h2:first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.prose h3 { font-size: 23px; margin-top: 32px; }
.prose p { margin-top: 14px; color: var(--ink-2); }
.prose ul, .prose ol { margin: 14px 0 0; padding-left: 22px; color: var(--ink-2); }
.prose li { margin-top: 8px; }
.prose li::marker { color: var(--amber); font-family: var(--mono); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--amber); text-decoration: none; border-bottom: 1px solid var(--amber-soft); }
.prose a:hover { border-bottom-color: var(--amber); }
.prose code { font-family: var(--mono); font-size: 0.92em; background: var(--paper-2); padding: 1px 5px; }
.prose .meta { font-family: var(--mono); font-size: 12px; color: var(--ink-soft); margin-top: 12px; }

.table-wrap { overflow-x: auto; margin-top: 16px; }
table.table { border-collapse: collapse; width: 100%; font-size: 14px; }
table.table th, table.table td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--rule-strong); }
table.table th { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); font-weight: 500; background: var(--paper-2); }
table.table td { color: var(--ink-2); }
table.table td:first-child { color: var(--ink); font-weight: 500; white-space: nowrap; }

.toc { list-style: none; margin: 0; padding: 0; font-family: var(--mono); font-size: 13px; }
.toc li { padding: 6px 0; border-bottom: 1px dashed var(--rule); }
.toc a { text-decoration: none; color: var(--ink-2); }
.toc a:hover { color: var(--amber); }
.toc .n { color: var(--amber); margin-right: 10px; }

/* --- FAQ --- */
.faq { border-top: 1px solid var(--rule-strong); }
.faq details { border-bottom: 1px solid var(--rule-strong); }
.faq summary {
  list-style: none; cursor: pointer; padding: 18px 44px 18px 0; position: relative;
  font-family: var(--serif); font-size: 22px; line-height: 1.2; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; position: absolute; right: 4px; top: 16px;
  font-family: var(--mono); font-size: 20px; color: var(--amber);
}
.faq details[open] summary::after { content: '−'; }
.faq summary:hover { color: var(--amber); }
.faq .a { padding: 0 0 22px; color: var(--ink-2); max-width: 72ch; }
.faq .a p + p { margin-top: 12px; }

/* --- Sticky aside --- */
.aside-sticky { position: sticky; top: 88px; }

/* --- Footer --- */
footer {
  border-top: 1px solid var(--rule); margin-top: 64px; padding: 56px 0 40px;
  background: var(--paper-2); position: relative; z-index: 2;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.footer-blurb { max-width: 320px; margin-top: 14px; }
.footer-mail { margin-top: 12px; }
.footer-mail a { text-decoration: none; color: var(--ink-2); border-bottom: 1px solid var(--rule-strong); }
.footer-mail a:hover { border-bottom-color: var(--ink); }
.footer-col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 14px; font-weight: 500; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { text-decoration: none; font-size: 14px; color: var(--ink-2); border-bottom: 1px solid transparent; }
.footer-col a:hover { border-bottom-color: var(--ink-2); }
.footer-bottom {
  margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; color: var(--ink-soft);
}

/* --- Utility --- */
.mono { font-family: var(--mono); }
.small { font-size: 13px; }
.muted { color: var(--ink-soft); }
.link { color: var(--amber); text-decoration: none; border-bottom: 1px solid var(--amber-soft); }
.link:hover { border-bottom-color: var(--amber); }
.mail { font-family: var(--mono); }

/* Scroll reveal: only when JS is present, so content never hides without it */
html.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity .7s ease, transform .7s ease; }
html.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 900px) {
  .cols-3 { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 820px) {
  .nav-inner { padding: 12px 20px; gap: 10px 20px; }
  .nav-links { gap: 18px; font-size: 12px; }
  .cols-2, .cols-1-2, .cols-2-1 { grid-template-columns: 1fr; gap: 32px; }
  .features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 60px 0; }
  .hero { padding-top: 48px; padding-bottom: 40px; }
  .container { padding: 0 20px; }
  .principles li { grid-template-columns: 44px 1fr; gap: 14px; }
  .aside-sticky { position: static; }
  .ledger { grid-template-columns: 1fr; }
  .ledger dt { border-bottom: 0; padding-bottom: 2px; }
  .ledger dd { padding-top: 2px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .faq summary { font-size: 20px; }
}