/* 1chava — CSS único, cero JS. Lenguaje unificado del design system (2026-07):
   claro = stone cálido, oscuro = pergamino (via prefers-color-scheme), acento violeta.
   Dirección editorial: wordmark grande, titulares 800, spine de serie, cards anterior/siguiente. */

:root {
  --bg: #FAFAF9;
  --surface: #F5F5F4;
  --card: #FFFFFF;
  --fg: #1C1917;
  --fg-muted: #57534E;
  --fg-light: #A8A29E;
  --accent: #5B4B8A;
  --border: #E7E5E4;

  --attention-wash: #FEF3C7;
  --attention-deep: #92400E;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  --font-size-base: 1.125rem;
  --line-height-base: 1.65;
  --measure: 72ch;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;

  --radius-card: 0.75rem;
  --radius-control: 0.5rem;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-base: 200ms;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1510;
    --surface: #211c15;
    --card: #2a2018;
    --fg: #f0e6d3;
    --fg-muted: #c0a888;
    --fg-light: #c0a888;
    --accent: #A79BD8;
    --border: #3a3028;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: var(--space-1) var(--space-2);
  z-index: 10;
}

.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

a {
  color: var(--accent);
  text-decoration-thickness: from-font;
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration-thickness: 2px;
  transition: text-decoration-thickness var(--dur-fast) var(--ease-out);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
}

/* ── Cabecera editorial ─────────────────────────────────────── */

.site-header {
  max-width: var(--measure);
  margin: 0 auto;
  padding: var(--space-5) 1.25rem var(--space-4);
}

.wordmark {
  display: inline-block;
  font-size: clamp(2rem, 6vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--fg);
  text-decoration: none;
}

.lang-link {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.lang-link:hover {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.site-desc {
  margin: 0.75rem 0 0;
  color: var(--fg-muted);
  font-size: 1.05rem;
}

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.25rem var(--space-6);
}

/* ── Lista de posts ─────────────────────────────────────────── */

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--border);
}

.post-entry {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border);
}

.entry-meta {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  flex-wrap: wrap;
}

.entry-meta time {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-light);
  font-variant-numeric: tabular-nums;
}

.meta-series {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.badge-draft {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--attention-deep);
  background: var(--attention-wash);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
}

.entry-title {
  display: block;
  margin-top: 0.6rem;
  font-size: clamp(1.4rem, 4.5vw, 1.85rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.entry-title:hover {
  color: var(--accent);
}

.entry-summary {
  margin: 0.7rem 0 0;
  color: var(--fg-muted);
  font-size: 1.05rem;
}

/* ── Post individual ────────────────────────────────────────── */

.back-link {
  margin: 0 0 var(--space-4);
}

.back-link a {
  font-size: 0.9rem;
  text-decoration: none;
}

.back-link a:hover {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.post-header h1 {
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0.75rem 0 1.25rem;
}

.series-spine {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--card);
  padding: 1.25rem 1.4rem;
  margin: 0 0 2.5rem;
  box-shadow: 0 1px 3px rgba(28, 25, 23, 0.04), 0 1px 2px rgba(28, 25, 23, 0.02);
}

.spine-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.series-spine ol {
  margin: 0.75rem 0 0;
  padding-left: 1.4rem;
  font-size: 0.95rem;
  color: var(--fg-muted);
}

.series-spine li {
  margin: 0 0 0.3rem;
}

.series-spine li.current {
  color: var(--fg);
  font-weight: 700;
}

.series-spine .here {
  color: var(--accent);
  font-weight: 600;
}

/* ── Prosa ──────────────────────────────────────────────────── */

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.25;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

p, ul, ol, blockquote, .prose figure {
  margin: 0 0 var(--space-2);
}

.prose > p:first-of-type {
  font-size: 1.25rem;
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

blockquote {
  margin-left: 0;
  padding-left: 1.1rem;
  border-left: 3px solid var(--accent);
  color: var(--fg-muted);
  font-style: italic;
  font-size: 1.2rem;
  line-height: 1.55;
}

blockquote p {
  margin: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

pre {
  padding: var(--space-2);
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--surface);
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-4) 0;
}

img {
  max-width: 100%;
  height: auto;
}

/* ── Anterior / siguiente ───────────────────────────────────── */

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

@media (max-width: 560px) {
  .post-nav {
    grid-template-columns: 1fr;
  }
}

.nav-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--card);
  padding: 1rem 1.25rem;
  text-decoration: none;
  color: var(--fg);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}

a.nav-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.nav-card.next {
  text-align: right;
}

.nav-card.empty {
  border-style: dashed;
  background: none;
}

.nav-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-light);
  margin-bottom: 0.3rem;
}

.nav-title {
  font-weight: 700;
}

.nav-card.empty .nav-title {
  color: var(--fg-light);
  font-weight: 400;
}

/* ── 404 ────────────────────────────────────────────────────── */

.e404-code {
  font-size: 5rem;
  font-weight: 300;
  color: var(--fg-light);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-top: var(--space-5);
}

.e404-title {
  font-size: 1.25rem;
  margin: var(--space-2) 0;
}

.e404-body {
  color: var(--fg-muted);
}

/* ── Pie ────────────────────────────────────────────────────── */

.site-footer {
  max-width: var(--measure);
  margin: var(--space-5) auto 0;
  padding: var(--space-3) 1.25rem var(--space-5);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer .social {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.site-footer .social a {
  text-decoration: none;
}

.site-footer .social a:hover {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.site-footer .legal {
  margin: 0;
  color: var(--fg-light);
  font-size: 0.85rem;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Chroma — resaltado de código server-side (Hugo), cero JS. Light: github. Dark: monokai. */

/* Background */ .bg { background-color:#f7f7f7; }
/* PreWrapper */ .chroma { background-color:#f7f7f7;-webkit-text-size-adjust:none; }
/* Error */ .chroma .err { color:#f6f8fa;background-color:#82071e }
/* LineLink */ .chroma .lnlinks { outline:none;text-decoration:none;color:inherit }
/* LineTableTD */ .chroma .lntd { vertical-align:top;padding:0;margin:0;border:0; }
/* LineTable */ .chroma .lntable { border-spacing:0;padding:0;margin:0;border:0; }
/* LineHighlight */ .chroma .hl { background-color:#dedede }
/* LineNumbersTable */ .chroma .lnt { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
/* LineNumbers */ .chroma .ln { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
/* Line */ .chroma .line { display:flex; }
/* Keyword */ .chroma .k { color:#cf222e }
/* KeywordConstant */ .chroma .kc { color:#cf222e }
/* KeywordDeclaration */ .chroma .kd { color:#cf222e }
/* KeywordNamespace */ .chroma .kn { color:#cf222e }
/* KeywordPseudo */ .chroma .kp { color:#cf222e }
/* KeywordReserved */ .chroma .kr { color:#cf222e }
/* KeywordType */ .chroma .kt { color:#cf222e }
/* NameAttribute */ .chroma .na { color:#1f2328 }
/* NameClass */ .chroma .nc { color:#1f2328 }
/* NameConstant */ .chroma .no { color:#0550ae }
/* NameDecorator */ .chroma .nd { color:#0550ae }
/* NameEntity */ .chroma .ni { color:#6639ba }
/* NameLabel */ .chroma .nl { color:#900;font-weight:bold }
/* NameNamespace */ .chroma .nn { color:#24292e }
/* NameOther */ .chroma .nx { color:#1f2328 }
/* NameTag */ .chroma .nt { color:#0550ae }
/* NameBuiltin */ .chroma .nb { color:#6639ba }
/* NameBuiltinPseudo */ .chroma .bp { color:#6a737d }
/* NameVariable */ .chroma .nv { color:#953800 }
/* NameVariableClass */ .chroma .vc { color:#953800 }
/* NameVariableGlobal */ .chroma .vg { color:#953800 }
/* NameVariableInstance */ .chroma .vi { color:#953800 }
/* NameVariableMagic */ .chroma .vm { color:#953800 }
/* NameFunction */ .chroma .nf { color:#6639ba }
/* NameFunctionMagic */ .chroma .fm { color:#6639ba }
/* LiteralString */ .chroma .s { color:#0a3069 }
/* LiteralStringAffix */ .chroma .sa { color:#0a3069 }
/* LiteralStringBacktick */ .chroma .sb { color:#0a3069 }
/* LiteralStringChar */ .chroma .sc { color:#0a3069 }
/* LiteralStringDelimiter */ .chroma .dl { color:#0a3069 }
/* LiteralStringDoc */ .chroma .sd { color:#0a3069 }
/* LiteralStringDouble */ .chroma .s2 { color:#0a3069 }
/* LiteralStringEscape */ .chroma .se { color:#0a3069 }
/* LiteralStringHeredoc */ .chroma .sh { color:#0a3069 }
/* LiteralStringInterpol */ .chroma .si { color:#0a3069 }
/* LiteralStringOther */ .chroma .sx { color:#0a3069 }
/* LiteralStringRegex */ .chroma .sr { color:#0a3069 }
/* LiteralStringSingle */ .chroma .s1 { color:#0a3069 }
/* LiteralStringSymbol */ .chroma .ss { color:#032f62 }
/* LiteralNumber */ .chroma .m { color:#0550ae }
/* LiteralNumberBin */ .chroma .mb { color:#0550ae }
/* LiteralNumberFloat */ .chroma .mf { color:#0550ae }
/* LiteralNumberHex */ .chroma .mh { color:#0550ae }
/* LiteralNumberInteger */ .chroma .mi { color:#0550ae }
/* LiteralNumberIntegerLong */ .chroma .il { color:#0550ae }
/* LiteralNumberOct */ .chroma .mo { color:#0550ae }
/* Operator */ .chroma .o { color:#0550ae }
/* OperatorWord */ .chroma .ow { color:#0550ae }
/* OperatorReserved */ .chroma .or { color:#0550ae }
/* Punctuation */ .chroma .p { color:#1f2328 }
/* Comment */ .chroma .c { color:#57606a }
/* CommentHashbang */ .chroma .ch { color:#57606a }
/* CommentMultiline */ .chroma .cm { color:#57606a }
/* CommentSingle */ .chroma .c1 { color:#57606a }
/* CommentSpecial */ .chroma .cs { color:#57606a }
/* CommentPreproc */ .chroma .cp { color:#57606a }
/* CommentPreprocFile */ .chroma .cpf { color:#57606a }
/* GenericDeleted */ .chroma .gd { color:#82071e;background-color:#ffebe9 }
/* GenericEmph */ .chroma .ge { color:#1f2328 }
/* GenericInserted */ .chroma .gi { color:#116329;background-color:#dafbe1 }
/* GenericOutput */ .chroma .go { color:#1f2328 }
/* GenericUnderline */ .chroma .gl { text-decoration:underline }
/* TextWhitespace */ .chroma .w { color:#fff }

@media (prefers-color-scheme: dark) {
  /* Background */ .bg { color:#f8f8f2;background-color:#272822; }
  /* PreWrapper */ .chroma { color:#f8f8f2;background-color:#272822;-webkit-text-size-adjust:none; }
  /* Error */ .chroma .err { color:#960050;background-color:#1e0010 }
  /* LineLink */ .chroma .lnlinks { outline:none;text-decoration:none;color:inherit }
  /* LineTableTD */ .chroma .lntd { vertical-align:top;padding:0;margin:0;border:0; }
  /* LineTable */ .chroma .lntable { border-spacing:0;padding:0;margin:0;border:0; }
  /* LineHighlight */ .chroma .hl { background-color:#3c3d38 }
  /* LineNumbersTable */ .chroma .lnt { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
  /* LineNumbers */ .chroma .ln { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
  /* Line */ .chroma .line { display:flex; }
  /* Keyword */ .chroma .k { color:#66d9ef }
  /* KeywordConstant */ .chroma .kc { color:#66d9ef }
  /* KeywordDeclaration */ .chroma .kd { color:#66d9ef }
  /* KeywordNamespace */ .chroma .kn { color:#f92672 }
  /* KeywordPseudo */ .chroma .kp { color:#66d9ef }
  /* KeywordReserved */ .chroma .kr { color:#66d9ef }
  /* KeywordType */ .chroma .kt { color:#66d9ef }
  /* NameAttribute */ .chroma .na { color:#a6e22e }
  /* NameClass */ .chroma .nc { color:#a6e22e }
  /* NameConstant */ .chroma .no { color:#66d9ef }
  /* NameDecorator */ .chroma .nd { color:#a6e22e }
  /* NameException */ .chroma .ne { color:#a6e22e }
  /* NameOther */ .chroma .nx { color:#a6e22e }
  /* NameTag */ .chroma .nt { color:#f92672 }
  /* NameFunction */ .chroma .nf { color:#a6e22e }
  /* NameFunctionMagic */ .chroma .fm { color:#a6e22e }
  /* Literal */ .chroma .l { color:#ae81ff }
  /* LiteralDate */ .chroma .ld { color:#e6db74 }
  /* LiteralString */ .chroma .s { color:#e6db74 }
  /* LiteralStringAffix */ .chroma .sa { color:#e6db74 }
  /* LiteralStringBacktick */ .chroma .sb { color:#e6db74 }
  /* LiteralStringChar */ .chroma .sc { color:#e6db74 }
  /* LiteralStringDelimiter */ .chroma .dl { color:#e6db74 }
  /* LiteralStringDoc */ .chroma .sd { color:#e6db74 }
  /* LiteralStringDouble */ .chroma .s2 { color:#e6db74 }
  /* LiteralStringEscape */ .chroma .se { color:#ae81ff }
  /* LiteralStringHeredoc */ .chroma .sh { color:#e6db74 }
  /* LiteralStringInterpol */ .chroma .si { color:#e6db74 }
  /* LiteralStringOther */ .chroma .sx { color:#e6db74 }
  /* LiteralStringRegex */ .chroma .sr { color:#e6db74 }
  /* LiteralStringSingle */ .chroma .s1 { color:#e6db74 }
  /* LiteralStringSymbol */ .chroma .ss { color:#e6db74 }
  /* LiteralNumber */ .chroma .m { color:#ae81ff }
  /* LiteralNumberBin */ .chroma .mb { color:#ae81ff }
  /* LiteralNumberFloat */ .chroma .mf { color:#ae81ff }
  /* LiteralNumberHex */ .chroma .mh { color:#ae81ff }
  /* LiteralNumberInteger */ .chroma .mi { color:#ae81ff }
  /* LiteralNumberIntegerLong */ .chroma .il { color:#ae81ff }
  /* LiteralNumberOct */ .chroma .mo { color:#ae81ff }
  /* Operator */ .chroma .o { color:#f92672 }
  /* OperatorWord */ .chroma .ow { color:#f92672 }
  /* OperatorReserved */ .chroma .or { color:#f92672 }
  /* Punctuation */ .chroma .p { color:#f8f8f2 }
  /* Comment */ .chroma .c { color:#75715e }
  /* CommentHashbang */ .chroma .ch { color:#75715e }
  /* CommentMultiline */ .chroma .cm { color:#75715e }
  /* CommentSingle */ .chroma .c1 { color:#75715e }
  /* CommentSpecial */ .chroma .cs { color:#75715e }
  /* CommentPreproc */ .chroma .cp { color:#75715e }
  /* CommentPreprocFile */ .chroma .cpf { color:#75715e }
  /* GenericDeleted */ .chroma .gd { color:#f92672 }
  /* GenericEmph */ .chroma .ge { font-style:italic }
  /* GenericInserted */ .chroma .gi { color:#a6e22e }
  /* GenericStrong */ .chroma .gs { font-weight:bold }
  /* GenericSubheading */ .chroma .gu { color:#75715e }
}