/* Docs y Changelog: mismo sistema que la landing (fichero Zettelkasten, DESIGN.md), en versión de lectura.
   Monocromo, Archivo para leer, Courier Prime solo para lo tipeado (código, referencias, sellos). */
:root {
  --desk: #ececea;
  --card: #ffffff;
  --ink: #0a0a0a;
  --ink-2: #3d3d3d;
  --muted: #5e5e5e;
  --rule: #cfcfcc;
  --rule-soft: #e3e3e0;
  --line: #b4b4b0;
  --shadow: 0 1px 0 rgba(10,10,10,.07), 0 3px 5px -2px rgba(10,10,10,.16);
  --type: "Courier Prime", "Courier New", monospace;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --max: 1400px;
  --gutter: clamp(16px, 3vw, 32px);
  --top: 64px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--top) + 20px); scrollbar-color: #9a9a96 var(--desk); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--desk); color: var(--ink); font: 400 16.5px/1.65 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; }
::selection { background: var(--ink); color: var(--card); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
svg { display: block; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* idioma: todo el contenido está en los dos idiomas y se muestra uno */
html[lang="en"] .l-es, html[lang="es"] .l-en { display: none !important; }

/* ---------- barra superior (igual que la landing) ---------- */
header.top { position: sticky; top: 0; z-index: 30; height: var(--top); background: color-mix(in srgb, var(--desk) 92%, transparent);
  backdrop-filter: saturate(1.2) blur(8px); -webkit-backdrop-filter: saturate(1.2) blur(8px); border-bottom: 1px solid var(--rule); }
.top .wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; height: 100%; }
.mark { display: flex; align-items: center; gap: 10px; align-self: center; text-decoration: none; }
.mark-word { font: 800 25px/1 var(--sans); font-stretch: 88%; letter-spacing: -.03em; }
.mark svg { width: 28px; height: 28px; }
nav.tabs { display: flex; align-items: flex-end; gap: 4px; }
nav.tabs a { display: flex; align-items: baseline; gap: 7px; padding: 9px 13px 10px; font: 600 14px/1 var(--sans); text-decoration: none; color: var(--ink-2);
  background: #f6f6f4; border: 1px solid var(--rule); border-bottom: 0; border-radius: 6px 6px 0 0; margin-bottom: -1px; transform: translateY(3px);
  transition: transform .2s var(--ease), background .2s; }
nav.tabs a .no { font: 400 12px/1 var(--type); color: var(--muted); }
nav.tabs a:hover { color: var(--ink); background: var(--card); transform: translateY(0); }
nav.tabs a[aria-current="page"] { background: var(--card); color: var(--ink); transform: translateY(0); border-color: var(--ink); box-shadow: 0 1px 0 var(--card); }
.top-right { display: flex; align-items: center; gap: 14px; align-self: center; }
.gh-top { display: inline-flex; align-items: center; gap: 7px; font: 600 14px/1 var(--sans); text-decoration: none; }
.gh-top svg { width: 19px; height: 19px; }
.top-link { font: 600 14px/1 var(--sans); text-decoration: none; }
.lang { display: flex; border: 1.5px solid var(--ink); border-radius: 3px; overflow: hidden; }
.lang button { border: 0; background: var(--card); color: var(--ink); font: 700 12px/1 var(--type); letter-spacing: .08em; padding: 8px 10px; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--card); }
.menu-btn { display: none; border: 1.5px solid var(--ink); background: var(--card); border-radius: 3px; height: 34px; padding: 0 10px; font: 700 12px/1 var(--type); letter-spacing: .08em; text-transform: uppercase; cursor: pointer; }

/* ---------- ficha ---------- */
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 3px; box-shadow: var(--shadow); position: relative; }
.card-h { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 9px 14px 7px; border-bottom: 1px solid var(--ink);
  font: 700 11.5px/1.2 var(--type); letter-spacing: .06em; text-transform: uppercase; }
.card-h .ref { font-weight: 400; letter-spacing: 0; text-transform: none; font-size: 13px; }
.stamp { display: inline-flex; align-items: center; gap: 6px; padding: 2px 8px 1px; border: 1.5px solid currentColor; border-radius: 3px;
  font: 700 11px/1.5 var(--type); letter-spacing: .12em; text-transform: uppercase; white-space: nowrap; }
.stamp.solid { background: var(--ink); color: var(--card); border-color: var(--ink); }

/* ---------- layout de docs: sidebar · contenido · "en esta página" ---------- */
.layout { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); display: grid; grid-template-columns: 250px minmax(0, 1fr) 210px; gap: clamp(24px, 3vw, 48px); }
.layout.two { grid-template-columns: 250px minmax(0, 1fr); }
aside.side { position: sticky; top: var(--top); align-self: start; height: calc(100vh - var(--top)); overflow-y: auto; padding: 24px 6px 40px 0; scrollbar-width: thin; }
.side-search { width: 100%; height: 38px; padding: 0 12px; margin-bottom: 18px; border: 1px solid var(--rule); border-radius: 3px; background: var(--card);
  font: 400 14px/1 var(--sans); color: var(--ink); box-shadow: var(--shadow); outline: none; }
.side-search:focus { border-color: var(--ink); }
.side-group { margin-bottom: 20px; }
.side-group h4 { margin: 0 0 6px; padding: 0 10px; font: 700 11.5px/1.2 var(--type); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.side-group a { display: flex; gap: 10px; align-items: baseline; padding: 5px 10px; border-radius: 3px; text-decoration: none; font: 500 14.5px/1.35 var(--sans); color: var(--ink-2); border-left: 2px solid transparent; }
.side-group a .no { font: 400 12px/1 var(--type); color: var(--muted); min-width: 2.2em; }
.side-group a:hover { color: var(--ink); background: rgba(10,10,10,.04); }
.side-group a[aria-current="page"] { color: var(--ink); font-weight: 700; background: var(--card); border-left-color: var(--ink); box-shadow: var(--shadow); }
.side-empty { padding: 0 10px; font-size: 14px; color: var(--muted); }

main.content { min-width: 0; padding: 30px 0 90px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font: 400 13px/1.3 var(--type); color: var(--muted); margin-bottom: 14px; }
.crumbs span + span::before { content: "/"; margin-right: 8px; color: var(--line); }
.content h1 { margin: 0 0 12px; font: 800 clamp(2.2rem, 4vw, 3.2rem)/1 var(--sans); font-stretch: 86%; letter-spacing: -.03em; text-wrap: balance; }
.lead { font-size: 1.14rem; color: var(--ink-2); margin: 0 0 30px; max-width: 42em; text-wrap: pretty; }
.content h2 { margin: 44px 0 12px; padding-top: 12px; border-top: 1px solid var(--rule); font: 750 1.55rem/1.2 var(--sans); letter-spacing: -.015em; }
.content h3 { margin: 28px 0 8px; font: 700 1.15rem/1.3 var(--sans); }
.content p, .content li { max-width: 44em; }
.content p { margin: 0 0 14px; }
.content ul, .content ol { padding-left: 1.3em; margin: 0 0 16px; }
.content li { margin-bottom: 6px; }
.content li::marker { color: var(--muted); }
.content :not(pre) > code { font: 400 .9em/1 var(--type); background: var(--card); border: 1px solid var(--rule); border-radius: 3px; padding: 1px 5px; white-space: nowrap; }
.content pre { position: relative; margin: 0 0 18px; background: var(--ink); color: #f2f2f0; border-radius: 3px; padding: 14px 16px; overflow-x: auto;
  font: 400 14px/1.6 var(--type); box-shadow: var(--shadow); }
.content pre .copy { position: absolute; top: 8px; right: 8px; }
.content table { width: 100%; border-collapse: collapse; margin: 0 0 20px; background: var(--card); border: 1px solid var(--rule); border-radius: 3px; font-size: 14.5px; display: block; overflow-x: auto; }
.content th { text-align: left; font: 700 11.5px/1.3 var(--type); letter-spacing: .06em; text-transform: uppercase; border-bottom: 1px solid var(--ink); padding: 10px 12px 8px; white-space: nowrap; }
.content td { border-top: 1px solid var(--rule-soft); padding: 9px 12px; vertical-align: top; }
.content td code { white-space: normal !important; }
.note { margin: 0 0 18px; max-width: 44em; }
.note .card-b { padding: 10px 14px 12px; font-size: 15px; }
.note .card-b p:last-child { margin: 0; }
.copy { flex: none; display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 9px; border: 1.5px solid var(--card); background: transparent; border-radius: 3px;
  cursor: pointer; font: 700 11px/1 var(--type); letter-spacing: .08em; text-transform: uppercase; color: var(--card); }
.copy:hover, .copy.done { background: var(--card); color: var(--ink); }
.page { display: none; }
.page.on { display: block; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 56px; max-width: 44em; }
.pager a { display: block; text-decoration: none; padding: 14px 16px; }
.pager a:hover { border-color: var(--ink); }
.pager small { display: block; font: 700 11px/1.3 var(--type); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.pager b { font: 700 16px/1.3 var(--sans); }
.pager .next { text-align: right; grid-column: 2; }
.edit { margin-top: 26px; font: 400 13px/1.4 var(--type); color: var(--muted); }

aside.toc { position: sticky; top: var(--top); align-self: start; max-height: calc(100vh - var(--top)); overflow-y: auto; padding: 34px 0 40px; }
aside.toc h4 { margin: 0 0 10px; font: 700 11.5px/1.2 var(--type); letter-spacing: .08em; text-transform: uppercase; }
aside.toc a { display: block; padding: 4px 0 4px 12px; border-left: 1px solid var(--rule); font: 500 13.5px/1.35 var(--sans); color: var(--muted); text-decoration: none; }
aside.toc a:hover { color: var(--ink); }
aside.toc a.on { color: var(--ink); border-left: 2px solid var(--ink); padding-left: 11px; font-weight: 700; }

/* ---------- changelog ---------- */
.log-head { max-width: 46em; }
.release { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 28px; padding: 34px 0; border-top: 1px solid var(--rule); }
.release:first-of-type { border-top: 0; }
.release .when { position: sticky; top: calc(var(--top) + 24px); align-self: start; }
.release .ver { font: 800 1.9rem/1 var(--sans); font-stretch: 86%; letter-spacing: -.02em; }
.release .date { display: block; margin-top: 8px; font: 400 13.5px/1.3 var(--type); color: var(--muted); }
.release .when .stamp { margin-top: 10px; }
.release h2 { margin: 0 0 10px; padding: 0; border: 0; font: 750 1.4rem/1.25 var(--sans); letter-spacing: -.01em; }
.release h3 { margin: 20px 0 6px; font: 700 11.5px/1.3 var(--type); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

footer { background: var(--ink); color: #a9a9a5; font: 500 14px/1.5 var(--sans); }
footer .wrap { max-width: var(--max); margin: 0 auto; padding: 22px var(--gutter) 26px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer a { color: var(--card); }

@media (max-width: 1180px) {
  .layout { grid-template-columns: 240px minmax(0, 1fr); }
  aside.toc { display: none; }
}
@media (max-width: 860px) {
  nav.tabs { display: none; }
  .gh-top span { display: none; }
  .menu-btn { display: inline-block; }
  .layout, .layout.two { grid-template-columns: minmax(0, 1fr); }
  /* align-self: stretch — con "start" (del layout de escritorio) la caja fija toma el alto del contenido y se mete bajo la barra */
  aside.side { display: none; position: fixed; inset: var(--top) 0 0 0; z-index: 25; height: auto; align-self: stretch; background: var(--desk); padding: 18px var(--gutter) 40px; }
  body.menu-open aside.side { display: block; }
  .release { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .content li code, .content p code { white-space: normal !important; overflow-wrap: anywhere; }
  .release .when { position: static; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; }
  .release .date, .release .when .stamp { margin-top: 0; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}
@media (max-width: 520px) {
  .top .wrap { gap: 10px; }
  .mark-word { font-size: 22px; }
  .top-right { gap: 8px; }
}