/* ==========================================================================
   Lang3 blog — shares the site's paper/ink tokens and self-hosted type.
   Two surfaces: /blog/ (list) and /blog/<slug>/ (article).
   ========================================================================== */

@font-face{font-family:'General Sans';src:url('/assets/fonts/general-sans-300.woff2') format('woff2');font-weight:300;font-style:normal;font-display:swap}
@font-face{font-family:'General Sans';src:url('/assets/fonts/general-sans-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'General Sans';src:url('/assets/fonts/general-sans-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'General Sans';src:url('/assets/fonts/general-sans-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Space Mono';src:url('/assets/fonts/space-mono-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}

:root{
  --paper:#EDEBE5; --paper-2:#E4E1D8; --card:#F6F4EE;
  --ink:#21201F; --ink-2:#5A5855; --ink-3:#605E5B;
  --line:rgba(33,32,31,.16); --line-2:rgba(33,32,31,.34);
  --on-ink:#F2EFE7;
  --brand:#F47D5C; --brand-ink:#DE5E3C; --brand-deep:#B34427;
  --sans:'General Sans','Helvetica Neue',Helvetica,-apple-system,BlinkMacSystemFont,sans-serif;
  --mono:'Space Mono',ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  --measure:68ch;
  --gutter:clamp(20px,5vw,56px);
  --nav-h:68px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}

/* ---------------------------------------------------------------- chrome */

.progress{position:fixed;inset:0 0 auto;height:2px;z-index:60;pointer-events:none}
.progress span{
  display:block;height:100%;background:var(--brand-deep);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .08s linear;
}

.site-head{
  position:sticky;top:0;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding:0 var(--gutter);
  background:rgba(237,235,229,.86);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
}
.brand{
  font-family:var(--mono);font-size:15px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;
}
.site-nav{display:flex;gap:clamp(14px,2.4vw,30px);font-size:13px;font-weight:500;color:var(--ink-2)}
.site-nav a:hover{color:var(--brand-deep)}
.site-nav a[aria-current]{color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px}
.site-nav a[aria-current]:hover{color:var(--ink)}
@media (max-width:640px){.site-nav{display:none}}

/* ------------------------------------------------------------ article page */

.post-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(32px,5vw,72px);
  max-width:1120px;margin:0 auto;
  padding:clamp(36px,6vw,80px) var(--gutter) clamp(64px,10vw,120px);
}
@media (min-width:1040px){
  .post-layout{grid-template-columns:196px minmax(0,1fr)}
}

/* table of contents */
.toc{order:-1;align-self:start;position:sticky;top:calc(var(--nav-h) + 32px)}
.toc details{display:block}
.toc summary{
  list-style:none;cursor:default;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3);
  margin-bottom:14px;
}
.toc summary::-webkit-details-marker{display:none}
@media (min-width:1040px){.toc summary{cursor:auto}}
.toc ol{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.toc a{
  display:block;padding:7px 0 7px 12px;
  font-size:13.5px;line-height:1.4;color:var(--ink-2);
  border-left:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.toc a:hover{color:var(--ink)}
.toc a.is-active{color:var(--brand-deep);border-left-color:var(--brand-deep)}
.toc .toc-l3{padding-left:12px}
.toc .toc-l3 a{font-size:12.5px;padding-left:22px;color:var(--ink-3)}

/* header block */
.post-head{max-width:min(var(--measure),100%);margin-bottom:clamp(28px,4vw,44px)}
.post-meta{
  display:flex;align-items:center;gap:9px;
  margin:0 0 18px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3);
}
.post-meta .dot{width:3px;height:3px;background:var(--line-2);border-radius:50%}
.post-head h1{
  margin:0;
  font-size:clamp(30px,4.2vw,46px);line-height:1.1;font-weight:500;
  letter-spacing:-.022em;
}
.post-sub{
  margin:18px 0 0;max-width:46ch;
  font-size:clamp(16px,1.6vw,18px);line-height:1.5;color:var(--ink-2);
}

/* hero image — every post gets one, and the same art doubles as the share card */
.post-hero{
  margin:0 0 clamp(32px,4.5vw,52px);
  max-width:min(var(--measure),100%);
}
.post-hero img{
  display:block;width:100%;height:auto;
  border-radius:2px;background:var(--ink);
}

/* body copy */
.prose{max-width:min(var(--measure),100%);font-size:clamp(17.5px,1.65vw,19px);line-height:1.75}
.prose p{margin:0 0 1.2em}
.prose p + p{margin-top:0}
.prose h2{
  margin:2.4em 0 .8em;
  font-size:clamp(21px,2.3vw,25px);line-height:1.25;font-weight:500;
  letter-spacing:-.012em;scroll-margin-top:calc(var(--nav-h) + 28px);
}
.prose h3{
  margin:1.9em 0 .6em;font-size:19px;font-weight:600;
  scroll-margin-top:calc(var(--nav-h) + 28px);
}
.prose h2:first-child{margin-top:0}
.prose strong{font-weight:600}
.prose em{font-style:italic}
.prose a{
  color:var(--brand-deep);
  border-bottom:1px solid rgba(179,68,39,.32);
  transition:border-color .16s ease;
}
.prose a:hover{border-bottom-color:var(--brand-deep)}
.prose blockquote{
  margin:1.8em 0;padding:2px 0 2px 22px;
  border-left:2px solid var(--brand-deep);
  font-size:1.02em;font-style:italic;color:var(--ink-2);
}
.prose blockquote p{margin:0}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.35em}
.prose li{margin-bottom:.5em}
.prose li::marker{color:var(--brand-deep)}
.prose hr{
  border:0;height:1px;background:var(--line);
  margin:clamp(34px,4vw,52px) 0;
  width:88px;
}
.prose code{
  font-family:var(--mono);font-size:.86em;
  background:var(--paper-2);padding:2px 5px;border-radius:3px;
}
.prose img{margin:1.8em 0;border-radius:2px}

/* article footer */
.post-foot{
  max-width:min(var(--measure),100%);
  margin-top:clamp(48px,7vw,80px);
  padding-top:26px;border-top:1px solid var(--line);
}
.back{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-2);
  transition:color .16s ease;
}
.back:hover{color:var(--brand-deep)}

/* -------------------------------------------------------------- list page */

.index{
  max-width:860px;margin:0 auto;min-height:72vh;
  padding:clamp(48px,8vw,96px) var(--gutter) clamp(64px,10vw,120px);
}
.index-head{max-width:min(var(--measure),100%);margin-bottom:clamp(40px,6vw,64px)}
.index-head h1{
  margin:0;font-size:clamp(32px,4.6vw,50px);line-height:1.08;
  font-weight:500;letter-spacing:-.024em;
}
.index-head p{margin:16px 0 0;max-width:52ch;color:var(--ink-2);font-size:17px}

.post-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.post-list li{border-bottom:1px solid var(--line)}
.post-list a{
  display:grid;gap:6px;
  padding:26px 0;
  transition:opacity .18s ease;
}
.post-list a:hover{opacity:.72}
.post-list time{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3);
}
.post-list__title{
  font-size:clamp(20px,2.5vw,27px);line-height:1.22;font-weight:500;
  letter-spacing:-.014em;
}
.post-list__sub{font-size:15.5px;line-height:1.5;color:var(--ink-2)}

/* -------------------------------------------------------------------- foot */

.site-foot{
  border-top:1px solid var(--line);
  padding:28px var(--gutter) 44px;
  font-family:var(--mono);font-size:11px;line-height:1.7;
  letter-spacing:.04em;color:var(--ink-3);
}
.site-foot p{margin:0;max-width:none}

/* ------------------------------------------------------------- small screens */

@media (max-width:1039px){
  .toc{position:static;margin-bottom:8px}
  .toc details{border:1px solid var(--line);border-radius:3px;padding:14px 18px}
  .toc summary{margin-bottom:0}
  .toc details[open] summary{margin-bottom:10px}
  .toc details:not([open]) ol{display:none}
}
@media (max-width:520px){
  body{font-size:16.5px}
  .post-meta{font-size:10.5px;letter-spacing:.07em}
}

/* ---------------------------------------------------------------- printing */

@media print{
  .progress,.site-head,.toc,.post-foot,.site-foot{display:none}
  body{background:#fff;color:#000;font-size:11pt}
  .post-layout{display:block;padding:0;max-width:none}
  .prose{max-width:none}
  .prose h2{page-break-after:avoid}
}