/* Fuentes propias (subconjunto latin, mismas caras que servía Google Fonts; pesos recortados al rango usado) */
@font-face { font-family: 'Nunito'; font-style: normal; font-weight: 500; font-display: swap; src: url(fuentes/nunito.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Nunito'; font-style: normal; font-weight: 600; font-display: swap; src: url(fuentes/nunito.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Nunito'; font-style: normal; font-weight: 700; font-display: swap; src: url(fuentes/nunito.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Nunito'; font-style: normal; font-weight: 800; font-display: swap; src: url(fuentes/nunito.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Nunito'; font-style: normal; font-weight: 900; font-display: swap; src: url(fuentes/nunito.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

/* ─────────────────────────────────────────────────────────────────
   ia.css — Sección /ia/: estética del manual "Historias IA"
   Papel crema con grano, tinta verdosa, verde petróleo, Nunito
   ────────────────────────────────────────────────────────────────── */

:root {
  --ia-papel: #F6F1E7;
  --ia-papel-alto: #FBF8F1;
  --ia-papel-bajo: #E7EEE8;
  --ia-tinta: #1E2A28;
  --ia-tinta-60: rgba(30, 42, 40, .68);
  --ia-verde: #2E7D77;
  --ia-verde-texto: #24665F;
  --ia-blanco: #FFFFFF;
  --ia-linea: rgba(30, 42, 40, .13);
  --ia-tarjeta: rgba(255, 255, 255, .55);
  --ia-sombra: 0 1px 2px rgba(30, 42, 40, .06), 0 8px 24px -12px rgba(30, 42, 40, .18);
  --ia-grano: .34;
  --ia-fuente: 'Nunito', system-ui, -apple-system, 'Segoe UI', sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ia-papel: #16201E;
    --ia-papel-alto: #1B2725;
    --ia-papel-bajo: #12201D;
    --ia-tinta: #EDE7DA;
    --ia-tinta-60: rgba(237, 231, 218, .7);
    --ia-verde: #2E7D77;
    --ia-verde-texto: #7CC4BC;
    --ia-linea: rgba(237, 231, 218, .14);
    --ia-tarjeta: rgba(255, 255, 255, .04);
    --ia-sombra: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .5);
    --ia-grano: .2;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ia-papel: #16201E;
  --ia-papel-alto: #1B2725;
  --ia-papel-bajo: #12201D;
  --ia-tinta: #EDE7DA;
  --ia-tinta-60: rgba(237, 231, 218, .7);
  --ia-verde: #2E7D77;
  --ia-verde-texto: #7CC4BC;
  --ia-linea: rgba(237, 231, 218, .14);
  --ia-tarjeta: rgba(255, 255, 255, .04);
  --ia-sombra: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .5);
  --ia-grano: .2;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body.ia {
  margin: 0;
  min-height: 100vh;
  font-family: var(--ia-fuente);
  font-weight: 500;
  color: var(--ia-tinta);
  background-color: var(--ia-papel);
  background-image: linear-gradient(180deg, var(--ia-papel-alto) 0%, var(--ia-papel) 50%, var(--ia-papel-bajo) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
/* Grano de papel: fractalNoise, 4 octavas, multiply */
body.ia::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: var(--ia-grano);
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.5 0 0 0 0 0.48 0 0 0 0 0.44 0 0 0 0.55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
}
:root[data-theme="dark"] body.ia::before { mix-blend-mode: screen; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) body.ia::before { mix-blend-mode: screen; } }
body.ia > main, body.ia > footer { position: relative; z-index: 1; }

.ia a { color: var(--ia-verde-texto); text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 3px; transition: color .15s; }
.ia a:hover { color: var(--ia-tinta); }
.ia :focus-visible { outline: 2px solid var(--ia-verde); outline-offset: 3px; border-radius: 4px; }

.ia-skip { position: absolute; left: -9999px; }
.ia-skip:focus-visible { position: fixed; left: .75rem; top: .75rem; z-index: 99; background: var(--ia-verde); color: var(--ia-blanco) !important; padding: .5rem 1rem; border-radius: 10px; text-decoration: none; font-weight: 800; }

/* ── Barra superior ─────────────────────────────────────────── */
.ia-bar { border-bottom: 1px solid var(--ia-linea); background: color-mix(in srgb, var(--ia-papel) 82%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 20; }
.ia-bar-in { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; height: 3.6rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.ia .ia-marca { font-weight: 900; font-size: 1.02rem; letter-spacing: -.015em; color: var(--ia-tinta); text-decoration: none; white-space: nowrap; }
.ia-marca span { color: var(--ia-verde-texto); }
.ia-menu { display: flex; align-items: center; gap: 1.35rem; list-style: none; margin: 0; padding: 0; }
.ia .ia-menu a { font-size: .84rem; font-weight: 700; color: var(--ia-tinta-60); text-decoration: none; padding: .3rem 0; border-bottom: 2px solid transparent; }
.ia .ia-menu a:hover { color: var(--ia-tinta); }
.ia .ia-menu a[aria-current] { color: var(--ia-tinta); border-bottom-color: var(--ia-verde); }
.ia .ia-menu .ia-buscar { display: flex; border: 0; }
@media (max-width: 760px) { .ia-menu .ia-ocultable { display: none; } .ia-menu { gap: 1rem; } .ia-bar-in { padding: 0 1rem; } }

/* ── Resaltador ─────────────────────────────────────────────── */
.ia-res {
  background: var(--ia-verde);
  color: var(--ia-blanco);
  border-radius: 16px;
  padding: 0 .16em .02em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* ── Encabezado de sección ──────────────────────────────────── */
.ia-wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }
.ia-head { padding: 4.2rem 0 2.6rem; }
.ia-firma { font-size: .82rem; font-weight: 800; color: var(--ia-tinta-60); margin: 0 0 1.1rem; letter-spacing: .01em; }
.ia-h1 { font-weight: 900; font-size: clamp(2.5rem, 6.4vw, 4.4rem); line-height: 1.16; letter-spacing: -.015em; margin: 0 0 1.2rem; }
.ia-h1 .ia-res { border-radius: .2em; }
.ia-dek { font-size: clamp(1.1rem, 1.9vw, 1.3rem); font-weight: 800; line-height: 1.38; margin: 0 0 1rem; text-wrap: balance; }
.ia-meta { font-size: .88rem; font-weight: 600; color: var(--ia-tinta-60); margin: 0; }
.ia-meta strong { color: var(--ia-tinta); font-weight: 800; }
.ia-sep { height: 1px; background: var(--ia-linea); border: 0; margin: 0; }

/* ── Grilla de notas ────────────────────────────────────────── */
.ia-anio { display: flex; align-items: center; gap: .9rem; font-weight: 900; font-size: 1.05rem; margin: 2.6rem 0 1.3rem; }
.ia-anio::after { content: ''; flex: 1; height: 1px; background: var(--ia-linea); }
.ia-anio-n { display: inline-block; background: var(--ia-verde); color: var(--ia-blanco); border-radius: 999px; padding: .15rem .8rem; font-size: .85rem; }
.ia-grilla { display: grid; grid-template-columns: 1fr; gap: 1.5rem; align-items: stretch; list-style: none; margin: 0 0 1rem; padding: 0; }
@media (min-width: 640px) { .ia-grilla { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .ia-grilla { grid-template-columns: repeat(3, 1fr); } }

.ia .ia-card { display: flex; flex-direction: column; height: 100%; text-decoration: none; color: var(--ia-tinta); background: var(--ia-tarjeta); border: 1px solid var(--ia-linea); border-radius: 20px; overflow: hidden; box-shadow: var(--ia-sombra); transition: transform .25s cubic-bezier(.2,.7,.2,1), box-shadow .25s, border-color .25s; }
.ia .ia-card:hover { color: var(--ia-tinta); transform: translateY(-4px); border-color: color-mix(in srgb, var(--ia-verde) 45%, transparent); box-shadow: 0 2px 4px rgba(30,42,40,.06), 0 18px 36px -16px rgba(30,42,40,.32); }
.ia-card-img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: var(--foco, 50% 50%); background: var(--ia-papel-bajo); border-bottom: 1px solid var(--ia-linea); }
.ia-card-cuerpo { padding: 1.15rem 1.25rem 1.3rem; display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.ia-card-fecha { font-size: .76rem; font-weight: 800; color: var(--ia-verde-texto); letter-spacing: .02em; }
.ia-card-titulo { font-size: 1.12rem; font-weight: 900; line-height: 1.25; letter-spacing: -.01em; margin: 0; }
.ia-card-titulo { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
/* Placa tipográfica para notas sin imagen */
.ia-placa { display: flex; flex-direction: column; justify-content: space-between; gap: 1.2rem; aspect-ratio: 16 / 10; padding: 1.5rem 1.6rem 1.1rem; background: linear-gradient(180deg, var(--ia-papel-alto), var(--ia-papel-bajo)); border-bottom: 1px solid var(--ia-linea); }
.ia-placa-t { font-weight: 900; font-size: 1.32rem; line-height: 1.18; letter-spacing: -.015em; color: var(--ia-tinta); display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; margin-top: auto; }
.ia-placa-pie { display: flex; justify-content: space-between; align-items: center; font-size: .7rem; font-weight: 800; color: var(--ia-tinta-60); }
.ia-placa-ia { background: var(--ia-verde); color: var(--ia-blanco); border-radius: 999px; padding: .12rem .65rem; font-size: .74rem; }
.ia-card:has(.ia-placa) .ia-card-titulo { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ia-card-texto { font-size: .95rem; line-height: 1.5; margin: 0; color: var(--ia-tinta-60); display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.ia-card-ir { margin-top: auto; padding-top: .3rem; font-size: .85rem; font-weight: 800; color: var(--ia-verde-texto); }
.ia-card:hover .ia-card-ir { text-decoration: underline; text-underline-offset: 3px; }

/* ── Nota individual ────────────────────────────────────────── */
.ia-nota { max-width: 42rem; margin: 0 auto; padding: 2.4rem 1.5rem 1rem; }
/* Tablet: una columna, más ancha */
@media (min-width: 768px) { .ia-nota { max-width: 50rem; padding-top: 3rem; } }
/* Escritorio: titular a todo el ancho, imagen fija a la izquierda y texto a la derecha */
@media (min-width: 960px) {
  .ia-nota { max-width: 72rem; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: clamp(2.5rem, 4vw, 4.5rem); align-items: start; }
  .ia-nota-cab { grid-column: 1 / -1; }
  .ia-nota-h1 { font-size: clamp(2.6rem, 3.6vw, 3.4rem); max-width: 24ch; margin-bottom: 2.2rem; }
  .ia-nota-h1-largo { font-size: clamp(2.2rem, 3vw, 2.8rem); max-width: 30ch; }
  .ia-nota-fig { margin: 0; position: sticky; top: 5.2rem; }
  .ia-nota-cuerpo { min-width: 0; }
  .ia-pasar { grid-column: 1 / -1; }
  .ia-nota-sola { max-width: 50rem; display: block; }
}
/* Celular: mismo margen lateral de 16 px que la barra */
@media (max-width: 760px) { body.ia .ia-wrap, body.ia .ia-nota, body.ia .ia-pie-in { padding-left: 1rem; padding-right: 1rem; } }
.ia .ia-volver { display: inline-flex; gap: .4rem; font-size: .88rem; font-weight: 800; text-decoration: none; margin-bottom: 2rem; }
.ia-nota-fecha { font-size: .88rem; font-weight: 800; color: var(--ia-tinta-60); margin: 0 0 .8rem; }
.ia-nota-h1 { font-weight: 900; font-size: clamp(1.9rem, 4.6vw, 2.75rem); line-height: 1.16; letter-spacing: -.015em; margin: 0 0 1.8rem; }
.ia-nota-h1-largo { font-size: clamp(1.55rem, 3.4vw, 2.05rem); line-height: 1.22; }
.ia-nota-fig { margin: 0 0 2rem; }
.ia-nota-img { display: block; width: 100%; height: auto; border-radius: 20px; border: 1px solid var(--ia-linea); box-shadow: var(--ia-sombra); background: var(--ia-papel-bajo); }
.ia-texto { font-size: clamp(1.13rem, 1.6vw, 1.25rem); line-height: 1.6; max-width: 68ch; }
.ia-texto p { margin: 0 0 1.05em; overflow-wrap: anywhere; }
.ia-texto strong { font-weight: 800; }
.ia-tags { display: flex; flex-wrap: wrap; gap: .45rem; margin: 1.6rem 0 0; padding: 0; list-style: none; }
.ia-tag { font-size: .82rem; font-weight: 800; color: var(--ia-verde-texto); background: color-mix(in srgb, var(--ia-verde) 12%, transparent); border-radius: 999px; padding: .25rem .75rem; }

.ia-acciones { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin: 2.4rem 0 0; padding: 1.4rem 0 0; border-top: 1px solid var(--ia-linea); }
.ia-acciones-t { font-size: .82rem; font-weight: 800; color: var(--ia-tinta-60); margin-right: .3rem; }
.ia .ia-btn { display: inline-flex; align-items: center; gap: .45rem; font: inherit; font-size: .86rem; font-weight: 800; cursor: pointer; text-decoration: none; color: var(--ia-tinta); background: var(--ia-tarjeta); border: 1px solid var(--ia-linea); border-radius: 999px; padding: .5rem 1rem; transition: background .15s, border-color .15s, color .15s; }
.ia .ia-btn:hover { color: var(--ia-tinta); border-color: var(--ia-verde); }
.ia .ia-btn-pri { background: var(--ia-verde); border-color: var(--ia-verde); color: var(--ia-blanco); }
.ia .ia-btn-pri:hover { background: var(--ia-tinta); border-color: var(--ia-tinta); color: var(--ia-papel); }
.ia-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.ia-origen { font-size: .9rem; font-weight: 600; color: var(--ia-tinta-60); margin: 1.4rem 0 0; }

.ia-pasar { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 2.6rem 0 0; }
.ia .ia-pasar a { display: block; text-decoration: none; color: var(--ia-tinta); border: 1px solid var(--ia-linea); border-radius: 16px; padding: .9rem 1.1rem; background: var(--ia-tarjeta); transition: border-color .15s; }
.ia .ia-pasar a:hover { border-color: var(--ia-verde); }
.ia-pasar small { display: block; font-size: .74rem; font-weight: 800; color: var(--ia-verde-texto); margin-bottom: .25rem; }
.ia-pasar span { font-size: .92rem; font-weight: 800; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ia-pasar .ia-sig { text-align: right; grid-column: 2; }
@media (max-width: 520px) { .ia-pasar { grid-template-columns: 1fr; } .ia-pasar .ia-sig { grid-column: 1; } }

/* ── Pie ────────────────────────────────────────────────────── */
.ia-pie { margin-top: 4rem; border-top: 1px solid var(--ia-linea); }
.ia-pie-in { max-width: 72rem; margin: 0 auto; padding: 2rem 1.5rem 2.6rem; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; font-size: .85rem; font-weight: 600; color: var(--ia-tinta-60); }
.ia-pie-in p { margin: 0; }
.ia-num { display: inline-block; background: var(--ia-verde); color: var(--ia-blanco); border-radius: 999px; padding: .1rem .7rem; font-weight: 800; font-size: .78rem; }

/* ── Movimiento ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .ia-entra { animation: ia-entra .7s cubic-bezier(.2,.7,.2,1) both; }
  .ia-grilla > li { animation: ia-entra .6s cubic-bezier(.2,.7,.2,1) both; animation-delay: calc(var(--i, 0) * 60ms); }
  @keyframes ia-entra { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
}
@media (prefers-reduced-motion: reduce) { .ia .ia-card { transition: none; } .ia .ia-card:hover { transform: none; } }

/* Botón de tema que inyecta dark-mode.js (la sección no carga dark-mode.css) */
.ia .theme-toggle { position: fixed; bottom: 1.5rem; left: 1.5rem; width: 2.75rem; height: 2.75rem; border-radius: 50%; border: 0; background: var(--ia-verde); color: var(--ia-blanco); display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 150; box-shadow: 0 4px 14px rgba(0,0,0,.22); font-size: 1.15rem; line-height: 1; transition: background .15s, transform .15s; }
.ia .theme-toggle:hover { background: var(--ia-tinta); color: var(--ia-papel); transform: translateY(-1px); }
@media (max-width: 600px) { .ia .theme-toggle { bottom: 1rem; left: 1rem; width: 2.5rem; height: 2.5rem; font-size: 1rem; } }
@media print { .ia .theme-toggle, .ia-bar, .ia-acciones, .ia-pasar { display: none !important; } body.ia::before { display: none; } }