/* =============================================================================
   SISTEMA VISUAL «EXPEDIENTE EN PAPEL» — Sitio OLM v2.0 (17-ago-2026)
   Rótulo: (c) marketing · Canon: Brief visual 0.7c §1 (paleta monocromática +
   acento forense, estética de informe pericial, cero clipart, cero flechas de
   éxito) + Especificaciones de maqueta §6 (familia tipográfica OFL del libro).
   Tipografía: Alegreya / Alegreya Sans / IBM Plex Mono — todas SIL OFL,
   autoalojadas (cero llamadas a terceros: lo exige el aviso de privacidad).
   Si el consultor adopta la propuesta T-2 (display comercial), se sustituye
   ÚNICAMENTE la variable --font-display.
   ========================================================================== */

/* ---------- 1. Tipografías autoalojadas ---------- */
@font-face{font-family:'Alegreya';font-style:normal;font-weight:400;font-display:swap;
  src:url('/assets/fonts/alegreya-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Alegreya';font-style:italic;font-weight:400;font-display:swap;
  src:url('/assets/fonts/alegreya-latin-400-italic.woff2') format('woff2')}
@font-face{font-family:'Alegreya';font-style:normal;font-weight:700;font-display:swap;
  src:url('/assets/fonts/alegreya-latin-700-normal.woff2') format('woff2')}
@font-face{font-family:'Alegreya Sans';font-style:normal;font-weight:400;font-display:swap;
  src:url('/assets/fonts/alegreya-sans-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Alegreya Sans';font-style:normal;font-weight:500;font-display:swap;
  src:url('/assets/fonts/alegreya-sans-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'Alegreya Sans';font-style:normal;font-weight:700;font-display:swap;
  src:url('/assets/fonts/alegreya-sans-latin-700-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('/assets/fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2')}

/* ---------- 2. Fichas de diseño (tokens) ---------- */
:root{
  --paper:#f4f0e7;
  --paper-raised:#fffdf8;
  --paper-sunk:#ebe5d8;
  --ink:#12161a;
  --ink-soft:#333b43;
  --muted:#615a4e;
  --rule:#d8cfbe;
  --rule-strong:#b3a894;
  --accent:#8c2f1b;
  --accent-deep:#6d2314;
  --accent-wash:#f0e0da;
  --dark:#14181c;
  --dark-raised:#1e242a;
  --dark-rule:#39424b;
  --paper-on-dark:#f2efe7;

  --font-text:'Alegreya',Georgia,'Times New Roman',serif;
  --font-display:'Alegreya',Georgia,serif;
  --font-ui:'Alegreya Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  --font-tech:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  --fs-display:clamp(2.9rem,1.5rem + 5.2vw,5.2rem);
  --fs-h1:clamp(2.1rem,1.45rem + 2.8vw,3.5rem);
  --fs-h2:clamp(1.6rem,1.28rem + 1.4vw,2.25rem);
  --fs-h3:clamp(1.22rem,1.12rem + .42vw,1.45rem);
  --fs-lede:clamp(1.18rem,1.06rem + .58vw,1.5rem);
  --fs-body:clamp(1.06rem,1.02rem + .18vw,1.15rem);
  --fs-small:.94rem;
  --fs-label:.71rem;

  --measure:34rem;
  --shell:74rem;
  --gap:clamp(1.5rem,1rem + 2.2vw,3.25rem);
  --band:clamp(3.5rem,2.4rem + 4.4vw,6.5rem);
  --radius:3px;
}

/* ---------- 3. Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background-color:var(--paper);color:var(--ink);
  font-family:var(--font-text);font-size:var(--fs-body);line-height:1.62;
  font-kerning:normal;text-rendering:optimizeLegibility;
  /* retícula técnica del expediente: dos hairlines cruzadas, casi invisibles */
  background-image:
    linear-gradient(to right,rgba(18,22,26,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,22,26,.030) 1px,transparent 1px);
  background-size:96px 96px;
}
img,svg{max-width:100%;height:auto}
a{color:var(--accent-deep);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
::selection{background:var(--accent);color:#fff}
hr{border:0;border-top:1px solid var(--rule);margin:var(--gap) 0}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.12;
  letter-spacing:-.012em;margin:0 0 .45em;text-wrap:balance}
h1{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3);line-height:1.25}
p{margin:0 0 1.05em}
strong{font-weight:700}
em{font-style:italic}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper-on-dark);
  padding:.7em 1em;font-family:var(--font-ui);z-index:99}
.skip:focus{left:.5rem;top:.5rem}

/* ---------- 4. Retícula ---------- */
.shell{width:min(100% - 2.5rem,var(--shell));margin-inline:auto}
@media (max-width:34rem){.shell{width:min(100% - 1.75rem,var(--shell))}}
.prose{max-width:var(--measure)}
.prose p,.prose li{font-size:var(--fs-body)}
.section{padding-block:var(--band)}
.section--tight{padding-block:calc(var(--band) * .6)}
.split{display:grid;gap:var(--gap);grid-template-columns:1fr}
@media (min-width:60rem){
  .split{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}
  .split--wide-left{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}
  .split--wide-right{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr)}
}
.cards{display:grid;gap:1.1rem;grid-template-columns:1fr}
@media (min-width:46rem){.cards--2{grid-template-columns:repeat(2,1fr)}}
@media (min-width:60rem){.cards--3{grid-template-columns:repeat(3,1fr)}
  .cards--4{grid-template-columns:repeat(4,1fr)}}
.stack>*+*{margin-top:1.15rem}
.center{text-align:center}

/* ---------- 5. Rótulos y marcas de expediente ---------- */
.label{font-family:var(--font-tech);font-size:var(--fs-label);letter-spacing:.19em;
  text-transform:uppercase;color:var(--muted);margin:0 0 .9rem;display:block}
.label--accent{color:var(--accent-deep)}
.label--onDark{color:#b9b1a2}
.rule-label{display:flex;align-items:center;gap:.9rem;margin-bottom:1.6rem}
.rule-label::after{content:"";flex:1;height:1px;background:var(--rule-strong)}
.rule-label .label{margin:0}
.dossier{font-family:var(--font-tech);font-size:var(--fs-label);letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);display:flex;flex-wrap:wrap;gap:.4rem 1.5rem;
  border-block:1px solid var(--rule);padding-block:.6rem}
.stamp{display:inline-block;font-family:var(--font-tech);font-size:.68rem;letter-spacing:.15em;
  text-transform:uppercase;color:var(--accent-deep);border:1px dashed var(--accent);
  padding:.45em .8em;border-radius:2px;line-height:1.35;background:rgba(255,255,255,.4)}
.stamp--rotate{transform:rotate(-2.2deg)}

/* ---------- 6. Encabezado y navegación ---------- */
.site-header{position:sticky;top:0;z-index:40;background:rgba(244,240,231,.93);
  backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid var(--rule)}
.site-header__in{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding-block:.65rem}
.brand{display:flex;align-items:baseline;gap:.55rem;text-decoration:none;color:var(--ink)}
.brand__mark{font-family:var(--font-tech);font-size:.78rem;letter-spacing:.2em;
  border:1px solid var(--ink);padding:.28em .45em;line-height:1}
.brand__name{font-family:var(--font-ui);font-weight:500;font-size:.95rem;letter-spacing:.02em}
.nav{display:flex;align-items:center;gap:1.25rem;font-family:var(--font-ui);font-size:.93rem}
.nav a{color:var(--ink-soft);text-decoration:none;padding-block:.35rem;border-bottom:1px solid transparent}
.nav a:hover,.nav a[aria-current="page"]{color:var(--accent-deep);border-bottom-color:var(--accent)}
.nav__links{display:flex;align-items:center;gap:1.25rem}
.nav__cta{font-family:var(--font-ui);font-size:.88rem;background:var(--accent);color:#fff;
  padding:.5em .9em;border-radius:var(--radius);text-decoration:none;white-space:nowrap}
.nav__cta:hover{background:var(--accent-deep);color:#fff}
@media (max-width:56rem){.nav__links{display:none}}

/* ---------- 7. Botones ---------- */
.btn{display:inline-block;font-family:var(--font-ui);font-weight:500;font-size:1rem;
  letter-spacing:.01em;padding:.85em 1.5em;border-radius:var(--radius);border:1px solid transparent;
  cursor:pointer;text-decoration:none;transition:background-color .16s ease,color .16s ease,
  border-color .16s ease,transform .16s ease}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-deep);color:#fff}
.btn--ghost{background:transparent;color:var(--accent-deep);border-color:var(--rule-strong)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn--dark{background:var(--ink);color:var(--paper-on-dark)}
.btn--dark:hover{background:#000;color:#fff}
.btn--onDark{background:var(--paper-on-dark);color:var(--ink)}
.btn--onDark:hover{background:#fff;color:#000}
.btn[disabled]{opacity:.55;cursor:default;transform:none}
.btn--block{display:block;width:100%;text-align:center}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}
.btn-note{font-family:var(--font-ui);font-size:.87rem;color:var(--muted);margin:.75rem 0 0}

/* ---------- 8. Portada (hero) ---------- */
.hero{padding-top:clamp(2.2rem,1.4rem + 3vw,4.5rem);padding-bottom:clamp(2rem,1.4rem + 3vw,4rem);
  position:relative}
.hero__grid{display:grid;gap:var(--gap);grid-template-columns:1fr}
@media (min-width:62rem){.hero__grid{grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);align-items:end}}
.hero h1,.hero .display{font-size:var(--fs-display);line-height:1.02;letter-spacing:-.028em;
  margin:.35em 0 .3em}
.hero .display em{font-style:italic;color:var(--accent-deep)}
.lede{font-size:var(--fs-lede);line-height:1.42;max-width:38rem;color:var(--ink-soft);margin:0 0 1.5rem}
.hero__aside{border-left:1px solid var(--rule-strong);padding-left:1.4rem}
@media (max-width:62rem){.hero__aside{border-left:0;border-top:1px solid var(--rule-strong);
  padding-left:0;padding-top:1.4rem}}

/* ---------- 9. Tarjetas / piezas de evidencia ---------- */
.card{background:var(--paper-raised);border:1px solid var(--rule);border-radius:var(--radius);
  padding:clamp(1.3rem,1rem + 1.1vw,2rem)}
.card--evidence{border-left:3px solid var(--accent)}
.card--sunk{background:var(--paper-sunk);border-color:var(--rule-strong)}
.card h3{margin-bottom:.4em}
.card>:last-child{margin-bottom:0}
.card__num{font-family:var(--font-tech);font-size:var(--fs-label);letter-spacing:.16em;
  color:var(--accent-deep);display:block;margin-bottom:.6rem}
.mirror{list-style:none;margin:0;padding:0}
.mirror li{background:var(--paper-raised);border:1px solid var(--rule);border-left:3px solid var(--accent);
  padding:1rem 1.15rem;margin-bottom:.75rem;font-size:1.06rem}
.ticks{list-style:none;margin:0 0 1.2rem;padding:0}
.ticks li{position:relative;padding:.7rem 0 .7rem 1.6rem;border-bottom:1px solid var(--rule)}
.ticks li:last-child{border-bottom:0}
.ticks li::before{content:"";position:absolute;left:.15rem;top:1.28rem;width:.5rem;height:.5rem;
  background:var(--accent)}
.numbered{list-style:none;counter-reset:ev;margin:0;padding:0}
.numbered li{counter-increment:ev;position:relative;padding-left:3rem;margin-bottom:1.3rem}
.numbered li::before{content:counter(ev,decimal-leading-zero);position:absolute;left:0;top:.1rem;
  font-family:var(--font-tech);font-size:.86rem;color:var(--accent-deep);
  border:1px solid var(--rule-strong);padding:.15em .45em;background:var(--paper-raised)}

/* ---------- 10. Bloques oscuros (la cita forense, la ventana) ---------- */
.band{background:var(--dark);color:var(--paper-on-dark);border-radius:var(--radius);
  padding:clamp(1.5rem,1.1rem + 1.6vw,2.5rem)}
.band a{color:#e9b9ac}
.band .label{color:#a49a8a}
.band-full{background:var(--dark);color:var(--paper-on-dark);padding-block:var(--band)}
.band-full a{color:#e9b9ac}
.band-full .label{color:#a49a8a}
.band-full h2,.band-full h3{color:var(--paper-on-dark)}
.band-full .lede{color:#cfc8ba}
.band-full .card{background:var(--dark-raised);border-color:var(--dark-rule);color:var(--paper-on-dark)}
.band-full .ticks li{border-color:var(--dark-rule)}
.band-full .field input{background:#fff}
.pull{font-family:var(--font-display);font-size:clamp(1.5rem,1.15rem + 1.7vw,2.4rem);
  line-height:1.24;letter-spacing:-.015em;margin:0}
.pull cite{display:block;font-family:var(--font-tech);font-style:normal;font-size:.78rem;
  letter-spacing:.16em;text-transform:uppercase;color:#a49a8a;margin-top:1.2rem}
/* Los botones dentro de bloques oscuros no heredan el color de enlace del bloque. */
.band a.btn--onDark,.band-full a.btn--onDark,.cta-bar a.btn--onDark{color:var(--ink)}
.band a.btn--onDark:hover,.band-full a.btn--onDark:hover,.cta-bar a.btn--onDark:hover{color:#000}
.band a.btn--primary,.band-full a.btn--primary{color:#fff}
/* El sello sobre fondo oscuro se invierte: rojo óxido sobre negro no se lee. */
.band .stamp,.band-full .stamp{color:#e9b9ac;border-color:#e9b9ac;background:transparent}

/* ---------- 11. Tablas y fichas técnicas ---------- */
.tabla{width:100%;border-collapse:collapse;font-size:var(--fs-small);background:var(--paper-raised)}
.tabla caption{font-family:var(--font-tech);font-size:var(--fs-label);letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);text-align:left;padding-bottom:.7rem}
.tabla th,.tabla td{text-align:left;padding:.72rem .85rem;border-bottom:1px solid var(--rule);
  vertical-align:top}
.tabla thead th{font-family:var(--font-ui);font-weight:700;font-size:.82rem;letter-spacing:.04em;
  text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--rule-strong)}
.tabla tbody tr:last-child td{border-bottom:0}
.tabla .n{font-family:var(--font-tech);color:var(--accent-deep);white-space:nowrap}
.tabla--zonas tbody tr td:first-child{font-family:var(--font-ui);font-weight:500}
.scroll-x{overflow-x:auto}

/* ---------- 12. Figuras ---------- */
.figura{margin:0}
.figura__frame{background:var(--paper-raised);border:1px solid var(--rule);padding:1.1rem}
.figura figcaption{font-family:var(--font-tech);font-size:.74rem;letter-spacing:.1em;
  color:var(--muted);margin-top:.7rem;line-height:1.5}
.figura figcaption b{color:var(--accent-deep);font-weight:400}

/* ---------- 13. Formularios ---------- */
.form{margin:0}
.field{margin-bottom:.85rem}
.field label{display:block;font-family:var(--font-ui);font-size:.88rem;color:var(--muted);
  margin-bottom:.3rem}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:1rem;
  font-family:var(--font-ui);padding:.75em .85em;border:1px solid var(--rule-strong);
  border-radius:var(--radius);background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);outline:none;
  box-shadow:0 0 0 3px var(--accent-wash)}
.field input[aria-invalid="true"]{border-color:var(--accent);background:#fff8f6}
.form-note{font-family:var(--font-ui);font-size:.87rem;color:var(--muted);margin:.85rem 0 0;line-height:1.5}
.form-note a{color:var(--muted)}
.form-ok{font-family:var(--font-ui);font-size:.98rem;color:var(--ink);background:var(--accent-wash);
  border-left:3px solid var(--accent);padding:.9rem 1.1rem;border-radius:var(--radius)}

/* ---------- 14. Barra de conversión persistente ---------- */
.cta-bar{position:fixed;left:0;right:0;bottom:0;z-index:50;background:var(--dark);
  color:var(--paper-on-dark);border-top:1px solid var(--dark-rule);
  transform:translateY(105%);transition:transform .28s ease;padding:.7rem 0}
.cta-bar[data-show="1"]{transform:translateY(0)}
.cta-bar__in{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.cta-bar__txt{font-family:var(--font-ui);font-size:.95rem;line-height:1.35}
.cta-bar__txt b{font-weight:700}
@media (max-width:40rem){.cta-bar__txt{font-size:.86rem}
  .cta-bar .btn{padding:.7em 1em;font-size:.9rem}}
@media (prefers-reduced-motion:reduce){.cta-bar{transition:none}}

/* ---------- 15. Pie ---------- */
.site-footer{background:var(--dark);color:#c9c2b4;margin-top:var(--band);
  padding-block:clamp(2.4rem,1.8rem + 2.4vw,4rem);font-family:var(--font-ui);font-size:.93rem}
.site-footer a{color:#e6e0d4;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer h2{font-family:var(--font-tech);font-size:var(--fs-label);letter-spacing:.19em;
  text-transform:uppercase;color:#8f877a;font-weight:400;margin-bottom:1rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:.5rem}
.footer-grid{display:grid;gap:2rem;grid-template-columns:1fr}
@media (min-width:46rem){.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}
.footer-legal{border-top:1px solid var(--dark-rule);margin-top:2.2rem;padding-top:1.4rem;
  font-size:.85rem;color:#8f877a;line-height:1.6}

/* ---------- 16. Movimiento (sobrio) ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.reveal[data-seen="1"]{opacity:1;transform:none;transition:opacity .5s ease,transform .5s ease}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- 17. Utilidades ---------- */
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.mt-1{margin-top:.9rem}.mt-2{margin-top:1.8rem}.mt-3{margin-top:2.8rem}
.small{font-size:var(--fs-small)}
.muted{color:var(--muted)}
.ui{font-family:var(--font-ui)}
.tech{font-family:var(--font-tech)}
.hide{display:none}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);
  clip-path:inset(50%);white-space:nowrap}

/* ---------- 18. Impresión (el expediente se imprime) ---------- */
@media print{
  body{background:#fff;color:#000;font-size:11pt}
  .site-header,.cta-bar,.site-footer,.no-print{display:none !important}
  .band{background:#fff;color:#000;border:1px solid #000}
  .card{border:1px solid #999}
  a{color:#000;text-decoration:none}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:8pt;color:#555}
}