/* ==========================================================================
   PROYECTO PAHA — ESTILO SOVIET TECH (CONSTRUCTIVISMO + RETROFUTURISMO)
   Hoja de estilo única para index.html y páginas de documentos (documento.html)
   Sin trackers, sin llamadas externas, tipografías locales en woff2 (SIL OFL 1.1)
   ========================================================================== */

@font-face {
  font-family: "Big Shoulders Display";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("fuentes/big-shoulders-display-800.woff2") format("woff2");
}

@font-face {
  font-family: "Big Shoulders Display";
  font-style: normal;
  font-weight: 900;
  font-display: swap;
  src: url("fuentes/big-shoulders-display-900.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fuentes/ibm-plex-sans-400.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fuentes/ibm-plex-sans-600.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fuentes/ibm-plex-sans-700.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fuentes/ibm-plex-mono-400.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fuentes/ibm-plex-mono-700.woff2") format("woff2");
}

:root {
  /* Paleta Soviet Tech — Constructivismo y plano técnico */
  --crema: #F3EFE6;          /* Papel principal de afiche / plano */
  --crema-bloque: #E6DFD1;   /* Módulos secundarios, tarjetas y celdas */
  --crema-aviso: #EAE0CC;    /* Fondo de franja de transparencia */
  --negro: #121212;          /* Tinta principal, bloques y bordes (16.4:1 sobre crema) */
  --gris-tecnico: #3E3C38;   /* Notas de fuente y metadatos (9.4:1 sobre crema) */
  --rojo: #B81D13;           /* Rojo constructivista en bloques y titulares (5.67:1 con crema) */
  --rojo-vivo: #D6281B;      /* Acento geométrico no textual, barras y diagonales */
  --linea-plano: #C4BCAE;    /* Retícula técnica de fondo y líneas secundarias */

  /* Pilas tipográficas con respaldo del sistema */
  --fuente-display: "Big Shoulders Display", "Impact", "Arial Narrow", "Franklin Gothic Heavy", sans-serif;
  --fuente-cuerpo: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --fuente-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* Espaciado y bordes estructurales */
  --borde-grueso: 3px solid var(--negro);
  --borde-fino: 2px solid var(--negro);
  --sombra-bloque: 5px 5px 0 var(--negro);
  --sombra-roja: 5px 5px 0 var(--rojo);
}

/* Reset y base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background-color: var(--crema);
  /* Retícula sutil de plano técnico */
  background-image:
    linear-gradient(to right, rgba(196, 188, 174, 0.28) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(196, 188, 174, 0.28) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--negro);
  font-family: var(--fuente-cuerpo);
  font-size: 1.0625rem; /* 17px */
  line-height: 1.62;
  overflow-x: hidden;
}

/* Enlaces: texto negro con subrayado grueso rojo (4.5:1+ garantizado, nunca texto chico rojo sobre crema) */
a {
  color: var(--negro);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--rojo);
  text-decoration-thickness: 2.5px;
  text-underline-offset: 3px;
}

a:hover {
  background-color: var(--negro);
  color: var(--crema);
  text-decoration-color: var(--rojo-vivo);
}

/* Foco visible accesible para teclado */
:focus-visible {
  outline: 3px solid var(--rojo);
  outline-offset: 3px;
}

a:focus-visible,
summary:focus-visible {
  background-color: var(--negro);
  color: var(--crema);
  outline: 3px solid var(--rojo-vivo);
  outline-offset: 2px;
}

/* Enlace de salto al contenido principal */
.salto-contenido {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  background: var(--negro);
  color: var(--crema);
  font-family: var(--fuente-mono);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 10px 16px;
  border: 2px solid var(--rojo-vivo);
  text-decoration: none;
}

.salto-contenido:focus {
  top: 12px;
}

/* Contenedor principal */
.envoltura {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ==========================================================================
   FRANJA DE TRANSPARENCIA SUPERIOR (Siempre visible primero y entera)
   ========================================================================== */
.franja {
  background-color: var(--crema-aviso);
  border-bottom: 4px solid var(--negro);
  border-top: 6px solid var(--rojo);
  font-size: 0.9375rem; /* 15px */
  line-height: 1.5;
  padding: 12px 0;
  position: relative;
}

.franja .envoltura {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.franja::before {
  content: "";
  display: none;
}

.franja p {
  margin: 0;
  color: var(--negro);
  border-left: 6px solid var(--rojo);
  padding-left: 12px;
}

.franja strong {
  font-weight: 700;
  background-color: var(--negro);
  color: var(--crema);
  padding: 1px 6px;
  margin-right: 4px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.franja a {
  display: inline-block;
  margin-left: 6px;
  font-family: var(--fuente-mono);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--negro);
  color: var(--crema);
  padding: 2px 8px;
  text-decoration: none;
  border: 2px solid var(--negro);
}

.franja a:hover,
.franja a:focus-visible {
  background: var(--rojo);
  color: var(--crema);
  border-color: var(--negro);
}

/* ==========================================================================
   CABECERA / PORTADA CONSTRUCTIVISTA
   ========================================================================== */
header.portada {
  padding: 28px 0 24px;
  border-bottom: 4px solid var(--negro);
  position: relative;
}

.portada-barra-tec {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background-color: var(--negro);
  color: var(--crema);
  padding: 8px 14px;
  border: var(--borde-fino);
  margin-bottom: 18px;
  position: relative;
}

.portada-barra-tec::after {
  content: "";
  display: block;
  width: 36px;
  height: 12px;
  background: repeating-linear-gradient(
    -45deg,
    var(--rojo-vivo),
    var(--rojo-vivo) 6px,
    var(--negro) 6px,
    var(--negro) 12px
  );
  flex-shrink: 0;
}

.sigla {
  font-family: var(--fuente-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--crema);
  margin: 0;
}

.portada-grilla {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: stretch;
  margin-bottom: 24px;
}

@media (min-width: 760px) {
  .portada-grilla {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 24px;
  }
}

.portada-bloque-principal {
  background-color: var(--crema);
  border: var(--borde-grueso);
  box-shadow: var(--sombra-bloque);
  padding: 22px 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Franja diagonal constructivista en el cabezal del bloque (nunca pisa texto) */
.cinta-constructivista {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--negro);
}

.etiqueta-diseno {
  display: inline-block;
  background-color: var(--rojo);
  color: var(--crema);
  font-family: var(--fuente-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 2px solid var(--negro);
}

.diagonal-decorativa {
  height: 14px;
  flex: 1;
  max-width: 140px;
  background: repeating-linear-gradient(
    -60deg,
    var(--negro),
    var(--negro) 8px,
    transparent 8px,
    transparent 14px
  );
}

h1 {
  font-family: var(--fuente-display);
  font-weight: 900;
  font-size: clamp(2.35rem, 6.8vw, 4.35rem);
  line-height: 0.98;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  color: var(--negro);
  margin: 0 0 18px;
  overflow-wrap: break-word;
}

.bajada {
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--negro);
  background-color: var(--crema-bloque);
  border-left: 8px solid var(--rojo);
  border-top: 2px solid var(--negro);
  border-right: 2px solid var(--negro);
  border-bottom: 2px solid var(--negro);
  padding: 14px 16px;
  margin: 0;
}

/* Panel geométrico retrofuturista (Brazo robótico cinemático y plano técnico) */
.portada-plano {
  background-color: var(--negro);
  color: var(--crema);
  border: var(--borde-grueso);
  box-shadow: var(--sombra-roja);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.plano-cabecera {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--gris-tecnico);
  padding-bottom: 8px;
  margin-bottom: 10px;
  font-family: var(--fuente-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--crema-bloque);
}

.plano-svg {
  width: 100%;
  height: auto;
  max-height: 220px;
  display: block;
  margin: auto 0;
}

.plano-pie {
  border-top: 1px solid var(--gris-tecnico);
  padding-top: 8px;
  margin-top: 10px;
  font-family: var(--fuente-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--crema-bloque);
  display: flex;
  justify-content: space-between;
}

/* ==========================================================================
   NAVEGACIÓN / ÍNDICE DE BLOQUES (390px Mobile-First)
   ========================================================================== */
nav.indice {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding: 14px 0 4px;
}

@media (min-width: 640px) {
  nav.indice {
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
  }
}

nav.indice a {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--crema);
  color: var(--negro);
  border: var(--borde-fino);
  box-shadow: 3px 3px 0 var(--negro);
  padding: 9px 10px;
  font-family: var(--fuente-mono);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.2;
  min-height: 44px;
  transition: transform 0.1s ease, background-color 0.1s ease, color 0.1s ease;
}

nav.indice a .num-nav {
  background-color: var(--rojo);
  color: var(--crema);
  padding: 2px 5px;
  font-size: 0.75rem;
  line-height: 1;
  flex-shrink: 0;
}

nav.indice a:hover,
nav.indice a:focus-visible {
  background-color: var(--negro);
  color: var(--crema);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--rojo);
}

/* ==========================================================================
   SECCIONES Y ENCABEZADOS CONSTRUCTIVISTAS
   ========================================================================== */
section {
  padding: 36px 0;
  border-bottom: 4px solid var(--negro);
  position: relative;
}

.cabecera-seccion {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-bottom: 20px;
  border: var(--borde-grueso);
  background-color: var(--negro);
  box-shadow: var(--sombra-bloque);
  overflow: hidden;
}

.num-seccion {
  background-color: var(--rojo);
  color: var(--crema);
  font-family: var(--fuente-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 3px solid var(--negro);
  position: relative;
  flex-shrink: 0;
}

/* Corte diagonal constructivista en el separador de número, lejos del texto */
.num-seccion::after {
  content: "";
  position: absolute;
  top: 0;
  right: -8px;
  width: 14px;
  height: 100%;
  background-color: var(--rojo);
  transform: skewX(-14deg);
  border-right: 3px solid var(--crema);
  z-index: 1;
}

section h2,
.documento-contenido h2 {
  font-family: var(--fuente-display);
  font-weight: 800;
  font-size: clamp(1.65rem, 4.2vw, 2.35rem);
  line-height: 1.1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--crema);
  background-color: var(--negro);
  margin: 0;
  padding: 12px 18px 12px 22px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* Estilo cuando h2 no está dentro de .cabecera-seccion (ej. documento.html) */
main h2 {
  font-family: var(--fuente-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.8vw, 2.1rem);
  line-height: 1.15;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  color: var(--crema);
  background-color: var(--negro);
  border: var(--borde-grueso);
  border-left: 12px solid var(--rojo);
  box-shadow: 4px 4px 0 var(--negro);
  padding: 10px 16px;
  margin: 36px 0 16px;
}

h3 {
  font-family: var(--fuente-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--negro);
  margin: 26px 0 10px;
  padding-left: 12px;
  border-left: 6px solid var(--rojo);
}

p {
  margin: 0 0 14px;
}

/* ==========================================================================
   MÓDULOS DE CIFRAS (.cifras / .cifra)
   ========================================================================== */
.cifras {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 22px 0;
}

@media (min-width: 680px) {
  .cifras {
    grid-template-columns: repeat(3, 1fr);
  }
}

.cifra {
  background-color: var(--crema);
  border: var(--borde-grueso);
  box-shadow: var(--sombra-bloque);
  padding: 0;
  display: flex;
  flex-direction: column;
  position: relative;
}

.cifra::before {
  content: "";
  display: block;
  height: 8px;
  background: linear-gradient(90deg, var(--rojo) 0%, var(--rojo) 70%, var(--negro) 70%, var(--negro) 100%);
  border-bottom: 2px solid var(--negro);
}

.cifra b {
  display: block;
  font-family: var(--fuente-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  line-height: 1.15;
  color: var(--negro);
  background-color: var(--crema-bloque);
  padding: 14px 16px 10px;
  border-bottom: 2px solid var(--negro);
  overflow-wrap: break-word;
}

.cifra span {
  display: block;
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--negro);
  padding: 12px 16px 16px;
  flex: 1;
}

/* ==========================================================================
   TABLAS CONSTRUCTIVISTAS Y TARJETAS APILADAS EN MÓVIL (390px sin scroll H)
   ========================================================================== */
.tabla {
  width: 100%;
  margin: 20px 0;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.96875rem; /* 15.5px */
  background-color: var(--crema);
  border: var(--borde-grueso);
  box-shadow: var(--sombra-bloque);
}

thead {
  background-color: var(--negro);
  color: var(--crema);
}

th {
  font-family: var(--fuente-mono);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 14px;
  text-align: left;
  border-bottom: 3px solid var(--rojo);
  border-right: 1px solid var(--gris-tecnico);
}

th:last-child {
  border-right: none;
}

td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 2px solid var(--negro);
  border-right: 2px solid var(--negro);
  overflow-wrap: break-word;
}

td:last-child {
  border-right: none;
}

tbody tr:nth-child(even) {
  background-color: var(--crema-bloque);
}

/* Primera columna numérica en #propuestas */
#propuestas td:first-child {
  font-family: var(--fuente-mono);
  font-size: 1.05rem;
  text-align: center;
  background-color: var(--negro);
  color: var(--crema);
  width: 52px;
}

/* Vista de tarjetas apiladas para teléfonos (390px y hasta 680px) */
@media (max-width: 680px) {
  .tabla {
    overflow-x: visible;
  }

  .tabla table {
    min-width: 0;
    border: none;
    box-shadow: none;
    background: transparent;
  }

  .tabla thead {
    display: none;
  }

  .tabla tbody {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .tabla tr {
    display: block;
    background-color: var(--crema) !important;
    border: var(--borde-grueso);
    box-shadow: 4px 4px 0 var(--negro);
    padding: 0;
    margin: 0;
  }

  .tabla td {
    display: block;
    border: none;
    border-bottom: 1px solid var(--linea-plano);
    padding: 10px 14px;
    width: 100% !important;
    text-align: left !important;
  }

  .tabla td:last-child {
    border-bottom: none;
  }

  /* Encabezado de tarjeta cuando la primera celda no tiene data-label (ej. # en Las 9 propuestas) */
  #propuestas .tabla td:first-child {
    background-color: var(--negro);
    color: var(--crema);
    border-bottom: 3px solid var(--rojo);
    padding: 6px 14px;
    font-size: 0.95rem;
  }

  #propuestas .tabla td:first-child strong::before {
    content: "PROPUESTA Nº ";
    font-weight: 700;
    letter-spacing: 0.06em;
  }

  /* Primera celda con data-label recibe barra superior constructivista */
  .tabla tr td:first-child[data-label] {
    background-color: var(--crema-bloque);
    border-top: 5px solid var(--rojo);
    border-bottom: 2px solid var(--negro);
  }

  .tabla td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-family: var(--fuente-mono);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--gris-tecnico);
    margin-bottom: 3px;
  }
}

/* ==========================================================================
   LISTAS NUMERADAS (#reglas) Y VIÑETAS
   ========================================================================== */
ol,
ul {
  padding-left: 22px;
  margin: 14px 0;
}

li {
  margin: 8px 0;
}

/* Estilizado constructivista de las 6 reglas */
#reglas ol {
  list-style: none;
  padding-left: 0;
  counter-reset: regla-paha;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 18px 0 22px;
}

@media (min-width: 720px) {
  #reglas ol {
    grid-template-columns: repeat(2, 1fr);
  }
}

#reglas ol li {
  counter-increment: regla-paha;
  background-color: var(--crema);
  border: var(--borde-fino);
  box-shadow: 4px 4px 0 var(--negro);
  padding: 14px 16px 14px 58px;
  margin: 0;
  position: relative;
}

#reglas ol li::before {
  content: "0" counter(regla-paha);
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 42px;
  background-color: var(--negro);
  color: var(--crema);
  border-right: 3px solid var(--rojo);
  font-family: var(--fuente-display);
  font-weight: 800;
  font-size: 1.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Lista de documentos como bloques de archivo técnico */
#documentos ul {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

#documentos ul li {
  background-color: var(--crema-bloque);
  border: var(--borde-fino);
  border-left: 8px solid var(--rojo);
  padding: 12px 16px;
  margin: 0;
  box-shadow: 3px 3px 0 var(--negro);
}

/* ==========================================================================
   BLOQUE DE ESTADO, NOTAS DE FUENTE Y PREGUNTAS (details/summary)
   ========================================================================== */
.estado {
  background-color: var(--crema-bloque);
  border: var(--borde-grueso);
  border-left: 12px solid var(--rojo);
  box-shadow: var(--sombra-bloque);
  padding: 16px 18px;
  margin: 20px 0;
}

.estado p {
  margin: 0;
}

.nota {
  font-family: var(--fuente-mono);
  font-size: 0.84375rem; /* 13.5px */
  line-height: 1.55;
  color: var(--gris-tecnico);
  background-color: var(--crema-bloque);
  border-left: 4px solid var(--negro);
  padding: 10px 14px;
  margin: 16px 0 0;
}

details {
  background-color: var(--crema);
  border: var(--borde-fino);
  box-shadow: 3px 3px 0 var(--negro);
  margin-bottom: 12px;
  padding: 0;
}

summary {
  cursor: pointer;
  font-family: var(--fuente-cuerpo);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 14px 16px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background-color: var(--crema-bloque);
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  font-family: var(--fuente-mono);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1;
  background-color: var(--negro);
  color: var(--crema);
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--negro);
}

details[open] summary {
  background-color: var(--negro);
  color: var(--crema);
  border-bottom: 3px solid var(--rojo);
}

details[open] summary::after {
  content: "−";
  background-color: var(--rojo);
  color: var(--crema);
  border-color: var(--crema);
}

details p {
  margin: 0;
  padding: 14px 16px;
  background-color: var(--crema);
}

/* ==========================================================================
   LECTURA LARGA DE DOCUMENTOS (documento.html)
   ========================================================================== */
main.documento-lectura {
  padding: 28px 0 56px;
}

.documento-marco {
  background-color: var(--crema);
  border: var(--borde-grueso);
  box-shadow: var(--sombra-bloque);
  padding: 20px 16px;
}

@media (min-width: 680px) {
  .documento-marco {
    padding: 36px 44px;
  }
}

.documento-marco h1 {
  font-size: clamp(1.85rem, 4.5vw, 2.85rem);
  line-height: 1.06;
  padding-bottom: 16px;
  border-bottom: 4px solid var(--negro);
  margin-bottom: 20px;
}

.documento-marco p {
  max-width: 72ch;
  line-height: 1.68;
  margin-bottom: 14px;
  white-space: pre-line;
}

.documento-marco hr {
  border: 0;
  height: 6px;
  background: repeating-linear-gradient(
    -45deg,
    var(--negro),
    var(--negro) 10px,
    var(--rojo) 10px,
    var(--rojo) 20px
  );
  margin: 28px 0;
}

/* ==========================================================================
   PIE DE PÁGINA (footer)
   ========================================================================== */
footer {
  margin-top: 32px;
  padding: 28px 0 48px;
  font-family: var(--fuente-mono);
  font-size: 0.875rem;
  color: var(--negro);
}

.pie-bloque {
  background-color: var(--negro);
  color: var(--crema);
  border: var(--borde-grueso);
  border-top: 6px solid var(--rojo);
  padding: 20px;
  box-shadow: var(--sombra-roja);
}

footer p {
  margin: 0 0 8px;
  color: var(--crema);
}

footer p:last-child {
  margin-bottom: 0;
  color: var(--crema-bloque);
}

/* ==========================================================================
   RESPETO A PREFERS-REDUCED-MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}