/* gueschla.com — The Labs, reopened.
   Page colours flip with the system theme. The archive "buffers" stay dark in both modes:
   they borrow the Green Chaud editor theme (light text on a dark ground, line numbers 128/159/128). */
:root {
  --paper: #f3f1e8;
  --paper-2: #e9e6d9;
  --ink: #22251d;
  --ink-2: #4c5244;
  --rule: #d3cfbf;
  --accent: #2f6b2a;
  --accent-2: #8a5a0c;
  --focus: #2f6b2a;
  /* the editor ground, constant */
  --ed-bg: #3f3f3f;      /* Green Chaud background rgb(63,63,63) */
  --ed-bg-2: #454545;    /* its line highlight rgb(69,69,69) */
  --ed-ink: #dedecb;     /* punctuation and caret rgb(222,222,203) */
  --ed-dim: #809f80;     /* line numbers rgb(128,159,128) */
  --ed-green: #8fe28f;   /* literals rgb(143,226,143) */
  --ed-warm: #f0eb8e;    /* identifiers rgb(240,235,142) */
  --ed-blue: #7cb7f1;    /* properties rgb(124,183,241) */
  --ed-pink: #e38eb9;    /* null, true, false rgb(227,142,185) */
  --ed-rule: #525252;
  --mono: "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --wrap: 1120px;
  --measure: 68ch;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #262624;
    --paper-2: #2e2e2b;
    --ink: #e4e3d6;
    --ink-2: #a9ad9c;
    --rule: #34382e;
    --accent: #8fe28f;
    --accent-2: #f0eb8e;
    --focus: #8fe28f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #262624; --paper-2: #2e2e2b; --ink: #e4e3d6; --ink-2: #a9ad9c; --rule: #34382e;
  --accent: #8fe28f; --accent-2: #f0eb8e; --focus: #8fe28f; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--sans);
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
img, svg { max-width: 100%; height: auto; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; background: var(--paper); padding: 6px 10px; z-index: 10; }

/* ---------- path bar (header) ---------- */
.bar { border-bottom: 1px solid var(--rule); background: var(--paper); }
.bar .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 20px; padding-top: 12px; padding-bottom: 12px; }
.path { font: 500 0.9rem/1.4 var(--mono); display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 2px; min-width: 0; }
.path a { color: var(--ink); text-decoration: none; }
.path a:hover { color: var(--accent); }
.path .home { font-weight: 600; }
.path .home b { color: var(--accent); font-weight: 600; }
.path .sep { color: var(--ink-2); opacity: .6; padding: 0 4px; }
.path .here { color: var(--ink-2); overflow-wrap: anywhere; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font: 400 0.85rem/1.4 var(--mono); }
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); }
.nav a[aria-current="page"]::before { content: "● "; font-size: .7em; vertical-align: 2px; }

/* ---------- headings ---------- */
.kicker { font: 500 0.78rem/1.4 var(--mono); letter-spacing: .04em; color: var(--accent-2); margin: 0 0 12px; text-transform: lowercase; }
h1, h2, h3, h4 { line-height: 1.15; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 6vw, 3.5rem); margin: 0 0 6px; max-width: 20ch; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.45rem, 3.4vw, 2rem); margin: 0 0 14px; }
h3 { font-size: 1.2rem; margin: 28px 0 8px; }
.fr-title { font: italic 400 clamp(1.15rem, 2.6vw, 1.5rem)/1.3 var(--serif); color: var(--ink-2); margin: 0 0 18px; max-width: 46ch; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 60ch; margin: 18px 0 0; }
.meta { font: 400 0.82rem/1.5 var(--mono); color: var(--ink-2); margin: 10px 0 0; }
.meta span + span::before { content: " · "; opacity: .6; }

.head { padding: 48px 0 28px; }
@media (min-width: 720px) { .head { padding: 72px 0 36px; } }

/* ---------- prose ---------- */
.prose { max-width: var(--measure); }
.prose p, .prose li { margin: 0 0 14px; }
.prose ul { padding-left: 20px; }
.prose h2 { margin-top: 44px; }
.prose code, .note code { font: 0.88em var(--mono); background: var(--paper-2); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.body { padding: 8px 0 64px; }
.cols { display: grid; gap: 32px; }
@media (min-width: 960px) { .cols { grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; } }

.note { border-left: 3px solid var(--accent); padding: 4px 0 4px 18px; margin: 28px 0; max-width: var(--measure); }
.note h2 { font-size: 1.1rem; margin: 0 0 6px; font-family: var(--mono); font-weight: 500; color: var(--accent); }
.note p { margin: 0 0 10px; }

/* ---------- the buffer: archived original text, always on the editor ground ---------- */
.buffer {
  margin: 32px 0;
  background: var(--ed-bg);
  color: var(--ed-ink);
  border-radius: 10px;
  overflow: hidden;
  max-width: 820px;
  box-shadow: 0 1px 0 rgba(0,0,0,.08), 0 10px 30px -18px rgba(0,0,0,.45);
}
.buffer .tab {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 16px;
  background: var(--ed-bg-2); border-bottom: 1px solid var(--ed-rule);
  font: 400 0.78rem/1.4 var(--mono); color: var(--ed-dim); padding: 9px 16px;
}
.buffer .tab b { color: var(--ed-warm); font-weight: 500; }
.buffer .src { counter-reset: ln; padding: 14px 16px 18px 0; font-size: 0.98rem; line-height: 1.6; }
.buffer .src > * { counter-increment: ln; position: relative; margin: 0 0 10px; padding-left: 58px; overflow-wrap: anywhere; }
.buffer .src > *::before {
  content: counter(ln); position: absolute; left: 0; width: 40px; text-align: right;
  font: 400 0.75rem/1.9 var(--mono); color: var(--ed-dim); opacity: .85;
}
.buffer .src > ul, .buffer .src > ol { padding-left: 78px; }
.buffer .src h3, .buffer .src h4, .buffer .src h5 { color: var(--ed-warm); font-size: 1.02rem; margin: 18px 0 6px; font-weight: 600; }
.buffer .src h3 { font-size: 1.12rem; color: var(--ed-green); }
.buffer a { color: var(--ed-green); }
.buffer code { font: 0.9em var(--mono); color: var(--ed-blue); }
.buffer pre {
  font: 0.84rem/1.55 var(--mono); color: var(--ed-green); background: rgba(0,0,0,.22);
  border-left: 2px solid var(--ed-dim); padding: 10px 12px 10px 14px; margin-left: 58px;
  overflow-x: auto; white-space: pre; padding-left: 14px;
}
.buffer .src > pre { padding-left: 14px; }
.buffer .src > pre::before { left: -58px; }
.buffer blockquote { border-left: 2px solid var(--ed-pink); margin: 0 0 10px 58px; padding: 2px 0 2px 14px; color: #cfcfbd; padding-left: 14px; }
.buffer .src > blockquote::before { left: -58px; }
.buffer table { border-collapse: collapse; margin: 6px 0; }
.buffer td, .buffer th { border: 1px solid var(--ed-rule); padding: 4px 10px; font-size: .9rem; }
.buffer .cap { border-top: 1px solid var(--ed-rule); padding: 9px 16px; font: 400 0.75rem/1.5 var(--mono); color: var(--ed-dim); }
.buffer.en .tab b { color: var(--ed-green); }

/* ---------- labs cards ---------- */
.files { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; }
@media (min-width: 720px) { .files { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.file {
  display: flex; flex-direction: column; border: 1px solid var(--rule); border-radius: 10px;
  background: var(--paper); text-decoration: none; color: var(--ink); overflow: hidden;
  transition: border-color .15s ease, transform .15s ease;
}
a.file:hover { border-color: var(--accent); transform: translateY(-2px); }
.file .fname { font: 500 0.84rem/1.4 var(--mono); padding: 10px 16px; border-bottom: 1px solid var(--rule); background: var(--paper-2); color: var(--ink-2); display: flex; justify-content: space-between; gap: 10px; }
.file .fname b { color: var(--accent); font-weight: 500; }
.file .in { padding: 16px; display: grid; gap: 10px; }
.file h3 { margin: 0; font-size: 1.3rem; }
.file p { margin: 0; color: var(--ink-2); font-size: .98rem; }
.file dl { margin: 4px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: .92rem; }
.file dt { font: 500 0.75rem/1.7 var(--mono); color: var(--accent-2); }
.file dd { margin: 0; color: var(--ink); }

/* ---------- post log ---------- */
.log { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.log li { border-bottom: 1px solid var(--rule); }
.log a { display: grid; grid-template-columns: 1fr; gap: 2px; padding: 14px 0; text-decoration: none; color: var(--ink); }
@media (min-width: 720px) { .log a { grid-template-columns: 9.5rem minmax(0, 1fr); gap: 0 20px; } }
.log time { font: 400 0.8rem/1.9 var(--mono); color: var(--ink-2); }
.log .t { font-weight: 600; font-size: 1.05rem; line-height: 1.35; }
.log .f { display: block; font: italic 400 1rem/1.35 var(--serif); color: var(--ink-2); margin-top: 2px; }
.log a:hover .t { color: var(--accent); }
.month { font: 500 0.85rem/1.4 var(--mono); color: var(--accent-2); margin: 36px 0 10px; }

/* ---------- home ---------- */
.hero { padding: 56px 0 40px; border-bottom: 1px solid var(--rule); }
@media (min-width: 720px) { .hero { padding: 88px 0 56px; } }
.hero h1 { max-width: 16ch; }
.hero .caret { display: inline-block; width: .5ch; height: .9em; background: var(--accent); vertical-align: -0.08em; margin-left: .08em; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .hero .caret { animation: none; } a.file:hover { transform: none; } }
.sec { padding: 48px 0; border-bottom: 1px solid var(--rule); }
.sec:last-of-type { border-bottom: 0; }
.sec-head { display: grid; gap: 8px 40px; margin-bottom: 24px; }
@media (min-width: 900px) { .sec-head { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: end; } }
.sec-head p { margin: 0; color: var(--ink-2); max-width: 56ch; }
.side { font-size: .95rem; color: var(--ink-2); }
.side h2 { font: 500 0.82rem/1.4 var(--mono); color: var(--accent-2); margin: 0 0 10px; }
.side ul { list-style: none; padding: 0; margin: 0 0 28px; }
.side li { padding: 6px 0; border-bottom: 1px dashed var(--rule); }

/* ---------- palette swatches (Green Chaud) ---------- */
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin: 20px 0; padding: 0; list-style: none; }
.swatches li { border-radius: 8px; overflow: hidden; border: 1px solid var(--rule); font: 400 0.78rem/1.4 var(--mono); }
.swatches .chip { height: 56px; }
.swatches .lab { padding: 8px 10px; background: var(--paper); color: var(--ink-2); }
.swatches .lab b { display: block; color: var(--ink); font-weight: 500; }

/* ---------- dialog demo ---------- */
.demo { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 18px 0; }
.btn { font: 500 0.9rem/1 var(--mono); border: 1px solid var(--accent); background: transparent; color: var(--accent); padding: 11px 16px; border-radius: 8px; cursor: pointer; }
.btn:hover { background: var(--accent); color: var(--paper); }
dialog.sb {
  border: 0; border-radius: 12px; padding: 0; width: min(92vw, 460px);
  background: var(--ed-bg); color: var(--ed-ink);
  opacity: 0; transform: translateY(8px); transition: opacity .35s ease, transform .35s ease, overlay .35s allow-discrete, display .35s allow-discrete;
}
dialog.sb[open] { opacity: 1; transform: none; }
@starting-style { dialog.sb[open] { opacity: 0; transform: translateY(8px); } }
dialog.sb::backdrop { background: rgba(10, 12, 8, 0); transition: background .35s ease, overlay .35s allow-discrete, display .35s allow-discrete; }
dialog.sb[open]::backdrop { background: rgba(10, 12, 8, .72); }
@starting-style { dialog.sb[open]::backdrop { background: rgba(10, 12, 8, 0); } }
dialog.sb .tab { display: flex; justify-content: space-between; align-items: center; background: var(--ed-bg-2); padding: 8px 8px 8px 16px; font: 400 0.78rem/1.4 var(--mono); color: var(--ed-dim); }
dialog.sb .x { background: none; border: 1px solid var(--ed-rule); color: var(--ed-ink); border-radius: 6px; font: 0.8rem var(--mono); padding: 5px 9px; cursor: pointer; }
dialog.sb .in { padding: 18px 18px 22px; font-size: .98rem; }
dialog.sb .in p { margin: 0 0 10px; }
@media (prefers-reduced-motion: reduce) { dialog.sb, dialog.sb::backdrop { transition: none; } }

/* ---------- tables of pages ---------- */
.index-list { columns: 1; column-gap: 40px; padding: 0; list-style: none; }
@media (min-width: 820px) { .index-list { columns: 2; } }
.index-list li { break-inside: avoid; padding: 5px 0; border-bottom: 1px dashed var(--rule); }
.index-list .p { display: block; font: 400 0.75rem/1.4 var(--mono); color: var(--ink-2); overflow-wrap: anywhere; }

.pager { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--rule); margin-top: 40px; padding-top: 18px; font-size: .95rem; }
.pager a { text-decoration: none; max-width: 44ch; }
.pager small { display: block; font: 400 0.75rem/1.4 var(--mono); color: var(--ink-2); }

/* ---------- search (Pagefind, themed) ---------- */
.find { display: grid; gap: 16px; }
#search {
  --pagefind-ui-scale: .9;
  --pagefind-ui-primary: var(--accent);
  --pagefind-ui-text: var(--ink);
  --pagefind-ui-background: var(--paper);
  --pagefind-ui-border: var(--rule);
  --pagefind-ui-tag: var(--paper-2);
  --pagefind-ui-border-width: 1px;
  --pagefind-ui-border-radius: 8px;
  --pagefind-ui-font: var(--sans);
  max-width: 760px;
}
#search .pagefind-ui__search-input { font-family: var(--mono); }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--rule); background: var(--paper-2); padding: 36px 0 44px; font-size: .9rem; color: var(--ink-2); }
.foot .wrap { display: grid; gap: 24px; }
@media (min-width: 860px) { .foot .wrap { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 56px; } }
.foot p { margin: 0 0 10px; max-width: 62ch; }
.foot nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 20px; align-content: start; font: 400 0.82rem/1.5 var(--mono); }
.foot nav a { color: var(--ink-2); text-decoration: none; }
.foot nav a:hover { color: var(--accent); }
.foot .mark { font: 600 0.9rem var(--mono); color: var(--ink); margin-bottom: 8px; }

/* code snippets in the new English writing */
.prose pre.snippet { background: var(--ed-bg); color: var(--ed-ink); border-radius: 10px; padding: 14px 16px; overflow-x: auto; font: 0.82rem/1.6 var(--mono); margin: 0 0 18px; }
.prose pre.snippet code { background: none; padding: 0; font: inherit; color: inherit; overflow-wrap: normal; }
.prose .swatches { padding: 0; }
.prose .swatches li { margin: 0; }