/* ==========================================================================
   Peritaje médico-legal — hoja de estilos única
   Paleta: tinta de expediente sobre papel frío, acento azul institucional.
   Tipografía: Newsreader (display) · IBM Plex Sans (texto) · IBM Plex Mono (datos)
   ========================================================================== */

:root {
  --ink:        #15191e;
  --ink-2:      #414951;
  --ink-3:      #71797f;
  --paper:      #f4f5f5;
  --paper-deep: #e7e9e9;
  --white:      #ffffff;
  --acento:     #1d4e89;
  --acento-soft:#e4ebf3;
  --line:       #cdd2d4;
  --line-soft:  #e1e4e5;

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:  "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --measure: 64ch;
  --max: 1180px;
  --rail: 148px;
  --gutter: clamp(1.25rem, 5vw, 3.5rem);

  --t: 420ms cubic-bezier(.22,.61,.36,1);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

::selection { background: var(--acento); color: var(--paper); }

/* --------------------------------------------------------- tipografía --- */

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.018em;
  line-height: 1.1;
  margin: 0 0 .6em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.3rem, 5.6vw, 4rem); line-height: 1.04; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); line-height: 1.22; }
h4 {
  font-family: var(--sans);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: 0;
  margin-bottom: .4em;
}

p { margin: 0 0 1.15em; max-width: var(--measure); }
p:last-child { margin-bottom: 0; }

a { color: var(--acento); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }

strong { font-weight: 600; }

.lead {
  font-size: clamp(1.1rem, 1.6vw, 1.28rem);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 56ch;
}

.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--acento);
  margin: 0 0 1.4rem;
  display: block;
}

.muted { color: var(--ink-3); }
.small { font-size: .9rem; line-height: 1.55; }

/* ------------------------------------------------------------ layout --- */

.wrap {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.band { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.band--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.band--paper { background: var(--white); }
.band--deep { background: var(--paper-deep); }
.band--ink { background: var(--ink); color: var(--paper); }
.band--ink h1, .band--ink h2, .band--ink h3 { color: var(--paper); }
.band--ink .eyebrow { color: #8ab4e8; }
.band--ink p { color: #b6bec6; }
.band--ink a { color: #8ab4e8; }

/* Riel de margen: marcadores de sección, como anotaciones al margen del expediente */
.railed { display: grid; gap: 0 clamp(1.5rem, 3vw, 3rem); }
.rail-mark {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: .45rem;
  border-top: 1px solid var(--line);
  margin-bottom: 1.5rem;
}
.band--ink .rail-mark { color: #79818a; border-color: #2b3138; }

@media (min-width: 62rem) {
  .railed { grid-template-columns: var(--rail) minmax(0, 1fr); }
  .rail-mark { margin-bottom: 0; position: sticky; top: 6.5rem; }
}

.stack > * + * { margin-top: 1.15em; }
.stack-lg > * + * { margin-top: clamp(2rem, 4vw, 3rem); }

.divider { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ------------------------------------------------------------- header --- */

.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-head__in {
  max-width: var(--max);
  margin-inline: auto;
  padding: .85rem var(--gutter);
  display: flex; align-items: center; gap: 1.5rem;
  justify-content: space-between;
}
.brand {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.brand span {
  display: block;
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: .2rem;
}

.nav { display: flex; align-items: center; gap: clamp(.8rem, 2vw, 1.7rem); }
.nav a {
  font-size: .875rem;
  color: var(--ink-2);
  text-decoration: none;
  padding-block: .3rem;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); border-color: var(--acento); }

.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--line);
  color: var(--ink); font-family: var(--mono); font-size: .72rem;
  letter-spacing: .1em; text-transform: uppercase;
  padding: .5rem .8rem; cursor: pointer; border-radius: 2px;
}

@media (max-width: 61.99rem) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; inset: 100% 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch;
    padding: .5rem var(--gutter) 1.2rem;
    gap: 0;
    display: none;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding: .7rem 0; border-bottom: 1px solid var(--line-soft); }
  .nav .btn { margin-top: .9rem; text-align: center; }
}

/* -------------------------------------------------------------- botón --- */

.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--sans); font-size: .9rem; font-weight: 500;
  padding: .72rem 1.35rem;
  border: 1px solid var(--ink);
  background: var(--ink); color: var(--paper);
  text-decoration: none; border-radius: 2px;
  transition: background .2s, color .2s, border-color .2s;
  cursor: pointer;
}
.btn:hover { background: var(--acento); border-color: var(--acento); color: var(--white); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: transparent; color: var(--acento); border-color: var(--acento); }
.btn--light { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--light:hover { background: transparent; color: var(--paper); border-color: var(--paper); }

.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }

/* --------------------------------------------------------------- hero --- */

.hero { padding-block: clamp(3.5rem, 10vw, 8rem) clamp(2.5rem, 6vw, 4.5rem); }
.hero h1 { max-width: 17ch; }
.hero .lead { margin-top: 1.6rem; }

.hero__meta {
  margin-top: 2.8rem;
  display: flex; flex-wrap: wrap; gap: .5rem 1.6rem;
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3);
}
.hero__meta span { display: inline-flex; align-items: center; gap: .5rem; }
.hero__meta span::before {
  content: ""; width: 5px; height: 5px; background: var(--acento);
  border-radius: 50%; flex: none;
}

/* ---------------------------------------------- escala de certeza (★) --- */
/* Elemento distintivo del sitio: la escala que ordena cada conclusión
   pericial, presentada como instrumento de calibración. */

.scale { border-top: 1px solid var(--line); padding-top: 2rem; }
.scale__head {
  display: flex; flex-wrap: wrap; align-items: baseline;
  justify-content: space-between; gap: .6rem 1.5rem; margin-bottom: 2.2rem;
}
.scale__title {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink); margin: 0;
}
.scale__hint { font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; color: var(--ink-3); text-transform: uppercase; }

.scale__track {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink); position: relative;
}
.scale__step {
  appearance: none; background: none; border: 0; cursor: pointer;
  text-align: left; padding: 1.1rem .9rem 1.3rem 0;
  font-family: var(--mono); font-size: .74rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-3);
  position: relative; transition: color .2s;
  border-radius: 2px;
}
.scale__step::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 1px; height: 14px; background: var(--ink);
  transition: height .3s var(--t), background .2s;
}
.scale__step:hover { color: var(--ink); }
.scale__step[aria-selected="true"] { color: var(--acento); }
.scale__step[aria-selected="true"]::before { height: 26px; background: var(--acento); width: 2px; }
.scale__step em {
  display: block; font-style: normal; font-family: var(--mono);
  font-size: .64rem; color: var(--ink-3); margin-top: .35rem; letter-spacing: .05em;
}

.scale__panel {
  margin-top: 1.6rem; min-height: 6.5rem;
  border-left: 2px solid var(--acento); padding-left: 1.4rem;
}
.scale__panel p { font-family: var(--serif); font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.4; color: var(--ink); max-width: 48ch; }
.scale__panel .small { font-family: var(--sans); color: var(--ink-3); margin-top: .8rem; }

@media (max-width: 44rem) {
  .scale__track { grid-template-columns: 1fr 1fr; }
  .scale__step { padding-right: .4rem; }
}

/* -------------------------------------------------------------- listas --- */

.grid { display: grid; gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
@media (min-width: 46rem) { .grid--2 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 58rem) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }

.cell { background: var(--white); padding: clamp(1.4rem, 3vw, 2.1rem); }
.cell__no {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .12em;
  color: var(--acento); display: block; margin-bottom: .9rem;
}
.cell p { font-size: .96rem; color: var(--ink-2); }

.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: grid; grid-template-columns: 3.2rem minmax(0,1fr);
  gap: 0 1rem; padding: 1.35rem 0;
  border-top: 1px solid var(--line-soft);
}
.steps li:last-child { border-bottom: 1px solid var(--line-soft); }
.steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono); font-size: .78rem; color: var(--acento); padding-top: .18rem;
}
.steps h3 { font-family: var(--sans); font-size: 1rem; font-weight: 600; letter-spacing: 0; margin-bottom: .3rem; }
.steps p { font-size: .95rem; color: var(--ink-2); margin: 0; }

.plain { list-style: none; margin: 0; padding: 0; max-width: var(--measure); }
.plain li {
  padding: .55rem 0 .55rem 1.4rem; position: relative;
  border-bottom: 1px solid var(--line-soft); font-size: .98rem; color: var(--ink-2);
}
.plain li::before {
  content: ""; position: absolute; left: 0; top: 1.15rem;
  width: 6px; height: 1px; background: var(--acento);
}

.facts { list-style: none; margin: 0; padding: 0; }
.facts li {
  display: grid; grid-template-columns: 1fr; gap: .1rem .5rem;
  padding: .85rem 0; border-bottom: 1px solid var(--line-soft);
}
@media (min-width: 40rem) { .facts li { grid-template-columns: 12.5rem minmax(0,1fr); } }
.facts dt, .facts .k {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .09em;
  text-transform: uppercase; color: var(--ink-3); padding-top: .18rem;
}
.facts .v { font-size: .98rem; color: var(--ink); }

/* -------------------------------------------------------------- prosa --- */

.prose h2 { margin-top: 2.6rem; }
.prose h3 { margin-top: 2rem; font-family: var(--sans); font-weight: 600; font-size: 1.05rem; letter-spacing: 0; }
.prose > *:first-child { margin-top: 0; }
.prose blockquote {
  margin: 2rem 0; padding-left: 1.4rem; border-left: 2px solid var(--acento);
  font-family: var(--serif); font-size: 1.3rem; line-height: 1.4; color: var(--ink);
}
.prose blockquote p { max-width: 46ch; }
.prose ul, .prose ol { max-width: var(--measure); padding-left: 1.2rem; color: var(--ink-2); }
.prose li { margin-bottom: .5rem; }

/* ------------------------------------------------------------- acordeón --- */

.qa { border-top: 1px solid var(--line); }
.qa details { border-bottom: 1px solid var(--line-soft); }
.qa summary {
  list-style: none; cursor: pointer; padding: 1.25rem 2.5rem 1.25rem 0;
  position: relative; font-family: var(--serif); font-size: 1.2rem; line-height: 1.3;
  font-weight: 600; color: #0b0f14;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: "+"; position: absolute; right: .25rem; top: 1.15rem;
  font-family: var(--mono); font-size: 1.1rem; color: var(--acento); transition: transform .25s;
}
.qa details[open] summary::after { content: "–"; }
.qa summary:hover { color: var(--acento); }
.qa .qa__body { padding: 0 0 1.5rem; }
.qa .qa__body p { font-size: .98rem; color: var(--ink-2); }

/* ------------------------------------------------------------ formulario --- */

.form { max-width: 34rem; }
.field { margin-bottom: 1.3rem; }
.field label {
  display: block; font-family: var(--mono); font-size: .7rem;
  letter-spacing: .11em; text-transform: uppercase; color: var(--ink-3); margin-bottom: .45rem;
}
.field input, .field select, .field textarea {
  width: 100%; font-family: var(--sans); font-size: 1rem; color: var(--ink);
  background: var(--white); border: 1px solid var(--line);
  padding: .75rem .9rem; border-radius: 2px;
}
.field textarea { min-height: 8rem; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--acento); outline-offset: 1px; border-color: var(--acento);
}
.notice {
  background: var(--acento-soft); border-left: 2px solid var(--acento);
  padding: 1rem 1.2rem; margin-bottom: 1.8rem; font-size: .92rem; color: var(--ink-2);
}
.notice p { max-width: none; }

/* -------------------------------------------------------------- footer --- */

.site-foot { background: var(--ink); color: #98a1aa; padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; font-size: .9rem; }
.site-foot a { color: #b6bec6; text-decoration: none; }
.site-foot a:hover { color: var(--paper); text-decoration: underline; }
.foot-grid { display: grid; gap: 2.2rem; }
@media (min-width: 48rem) { .foot-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: 3rem; } }
.site-foot h4 {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .12em;
  text-transform: uppercase; color: #71797f; font-weight: 400; margin-bottom: 1rem;
}
.site-foot ul { list-style: none; margin: 0; padding: 0; }
.site-foot li { margin-bottom: .55rem; }
.site-foot .brand, .site-foot .brand span { color: var(--paper); }
.foot-legal {
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #282d34;
  display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; justify-content: space-between;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .07em; text-transform: uppercase; color: #71797f;
}

/* --------------------------------------------------------------- blog --- */

.post-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.post-list li { border-bottom: 1px solid var(--line-soft); }
.post-list a {
  display: grid; gap: .3rem .5rem; padding: 1.6rem 0; text-decoration: none; color: var(--ink);
}
@media (min-width: 48rem) { .post-list a { grid-template-columns: 8rem minmax(0,1fr); } }
.post-list time { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; color: var(--ink-3); padding-top: .35rem; }
.post-list h3 { margin: 0 0 .3rem; }
.post-list p { font-size: .94rem; color: var(--ink-2); margin: 0; }
.post-list a:hover h3 { color: var(--acento); }
.post-list li[data-state="draft"] a { pointer-events: none; opacity: .5; }
.post-list li[data-state="draft"] time::after { content: " · en preparación"; }

/* --------------------------------------------------------- accesibilidad --- */

:focus-visible { outline: 2px solid var(--acento); outline-offset: 2px; border-radius: 2px; }

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper);
  padding: .7rem 1.1rem; z-index: 100;
}
.skip:focus { left: .5rem; top: .5rem; }

/* ------------------------------------------------------------- motion --- */

.reveal { opacity: 0; transform: translateY(14px); }
.reveal.is-in { opacity: 1; transform: none; transition: opacity .7s var(--t), transform .7s var(--t); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------- print --- */

@media print {
  .site-head, .site-foot, .actions, .nav-toggle { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
}

/* ------------------------------------------------------------ retrato --- */

.portrait-band { display: grid; gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
@media (min-width: 52rem) {
  .portrait-band { grid-template-columns: minmax(0, 21rem) minmax(0, 1fr); }
}
.portrait { margin: 0; }
.portrait img {
  width: 100%; aspect-ratio: 4 / 5; object-fit: cover;
  display: block; background: var(--paper-deep);
  filter: saturate(.92);
}
.portrait figcaption {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-3);
  margin-top: .85rem; padding-top: .7rem; border-top: 1px solid var(--line);
}
.portrait--wide img { aspect-ratio: 3 / 2; }