/* Fetalia Lab · «Del plano a la imagen» (24/10/2026). El claro de Fetalia para la orientación
   espacial y el oscuro del ecógrafo para la optimización, como el landing del Workshop STIC. */
:root {
  --bg: #fbfbfc; --ink: #14171d; --muted: #5d6472; --line: #e3e6ec; --panel: #ffffff; --accent: #3d5afe; --accent-soft: #eef1ff;
  --d-bg: #070a0d; --d-txt: #e6edf2; --d-muted: #8d9ba6; --d-line: #1d2932; --d-panel: #0d1419; --na-brand: #69b8ff; --ok: #62d793;
  --f-display: 'Newsreader', Georgia, serif; --f-sans: 'IBM Plex Sans', system-ui, sans-serif; --f-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --bar: 60px; --wrap: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--f-sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img, video { display: block; max-width: 100%; }
.wrap { width: min(var(--wrap), calc(100% - 48px)); margin: 0 auto; }
.kicker { margin: 0; font: 500 11px/1.3 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }
.h2 { margin: 10px 0 0; font: 500 clamp(32px, 4.6vw, 56px)/1.05 var(--f-display); letter-spacing: -.02em; }
.tag { margin: 0; font: 500 11px/1.3 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }

/* --- barra --- */
.bar { position: fixed; inset: 0 0 auto; z-index: 20; height: var(--bar); display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 24px; background: rgb(251 251 252 / 86%); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); transition: box-shadow .2s, background .25s, color .25s; }
.bar.sombra { box-shadow: 0 1px 0 var(--line); }
.en-oscuro .bar { background: rgb(7 10 13 / 84%); color: var(--d-txt); }
.en-oscuro .bar.sombra { box-shadow: 0 1px 0 var(--d-line); }
.en-oscuro .bar .lab span, .en-oscuro .bar .pill.quiet { color: var(--na-brand); }
.en-oscuro .bar .bar-date { color: var(--d-muted); }
.en-oscuro .bar .pill.off { border-color: var(--d-line); color: var(--d-muted); }
.en-oscuro .bar .pill:not(.quiet):not(.off) { background: var(--na-brand); border-color: var(--na-brand); color: #04121c; }
.en-oscuro .prog i { background: var(--na-brand); }
.lab { display: flex; align-items: baseline; gap: 6px; text-decoration: none; font: 600 14px var(--f-mono); letter-spacing: .2em; }
.lab span { color: var(--accent); }
.bar-r { display: flex; align-items: center; gap: 10px; }
.bar-date { font: 500 11px var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-right: 6px; }
.prog { position: fixed; inset: var(--bar) 0 auto; z-index: 19; height: 2px; }
.prog i { display: block; height: 100%; background: var(--accent); transform-origin: 0 50%; transform: scaleX(0); }

/* --- botones --- */
.pill { display: inline-flex; flex-direction: column; align-items: center; justify-content: center; min-height: 42px; padding: 0 20px; border: 1px solid var(--accent); border-radius: 40px; background: var(--accent); color: #fff; font: 500 14px/1.1 var(--f-sans); text-decoration: none; cursor: pointer; white-space: nowrap; transition: transform .15s, background .15s; }
.pill:hover { transform: translateY(-1px); }
.pill.quiet { background: transparent; color: var(--accent); }
.pill.big { min-height: 52px; padding: 0 26px; font-size: 16px; }
.pill small { font: 500 9.5px/1.2 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; opacity: .8; margin-top: 2px; }
.pill.off { border-color: var(--line); color: var(--muted); cursor: default; pointer-events: none; }
.pill:disabled { opacity: .6; cursor: wait; }

/* --- portada --- */
.hero { min-height: 100svh; display: grid; grid-template-columns: minmax(0, 44fr) minmax(0, 56fr); align-items: center; gap: clamp(24px, 4vw, 64px); padding: calc(var(--bar) + 40px) clamp(24px, 4vw, 64px) 56px; }
.hero h1 { margin: 16px 0 0; font: 500 clamp(56px, 8.4vw, 124px)/.95 var(--f-display); letter-spacing: -.035em; }
.hero h1 em { display: block; font-style: italic; color: var(--accent); }
.lead { margin: 22px 0 0; max-width: 30em; font-size: clamp(18px, 1.6vw, 21px); line-height: 1.5; color: var(--muted); }
.facts { margin: 30px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 28px; max-width: 34em; }
.facts dt { font: 500 10.5px var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.facts dd { margin: 2px 0 0; font-size: 17px; font-weight: 500; }
.acts { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.fine { margin: 18px 0 0; max-width: 34em; font-size: 14px; line-height: 1.55; color: var(--muted); }
.hero-media { margin: 0; }
.hero-media canvas { display: block; width: 100%; aspect-ratio: 1.36; }
.hero-media figcaption { display: flex; justify-content: space-between; gap: 12px; margin-top: 10px; font: 500 11px var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.hero-media figcaption b { color: var(--accent); font-weight: 500; font-variant-numeric: tabular-nums; }
/* el video de orientación se dibuja en lienzos: presente para el navegador, invisible en la página */
.fuente { position: fixed; left: 0; top: 0; width: 2px; height: 2px; opacity: 0; pointer-events: none; }

/* --- secciones --- */
.sec { padding: clamp(80px, 11vw, 150px) 0; }
.dos-grid, .ses-grid { margin-top: 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.dos-grid article { padding: 30px 32px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.num { font: 500 13px var(--f-mono); color: var(--accent); }
.dos-grid h3, .ses-grid h3 { margin: 10px 0 8px; font: 500 28px/1.15 var(--f-display); }
.dos-grid p { margin: 0; color: var(--muted); }

/* --- escenarios fijos: la sección mide (pasos × 115svh + 100svh) y su marco queda bajo la barra ---
   El scroll elige el capítulo (--u = su progreso). Nada pasa por detrás de la imagen. */
.pin { position: relative; height: calc(var(--pasos) * 115svh + 100svh); }
.pin-frame { position: sticky; top: var(--bar); height: calc(100svh - var(--bar)); overflow: hidden; display: grid; gap: 16px clamp(24px, 3vw, 48px); padding: clamp(18px, 3.4vh, 36px) clamp(24px, 4vw, 64px); }
.pin-frame > * { position: relative; z-index: 1; min-width: 0; }
.pin-head { grid-area: head; }
.pin-t { margin: 8px 0 0; max-width: 17em; font: 500 clamp(26px, 2.7vw, 40px)/1.06 var(--f-display); letter-spacing: -.02em; }
.pin-rail { grid-area: rail; list-style: none; margin: 0; padding: 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 6px; align-self: start; min-width: min(480px, 100%); }
.pin-rail button { position: relative; display: flex; flex-direction: column; gap: 2px; width: 100%; padding: 12px 0 0; border: 0; background: none; text-align: left; font: 500 10.5px/1.2 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); cursor: pointer; }
.pin-rail button::before, .pin-rail button::after { content: ''; position: absolute; inset: 0 0 auto; height: 2px; background: var(--line); }
.pin-rail button::after { background: var(--accent); transform-origin: 0 50%; transform: scaleX(0); }
.pin-rail button.hecho::after { transform: none; }
.pin-rail button.on::after { transform: scaleX(var(--u, 0)); }
.pin-rail button.on, .pin-rail button.hecho { color: var(--ink); }
.pin-rail b { color: var(--accent); font-weight: 500; }
.pin-caps { grid-area: caps; display: grid; max-width: 38em; }
.js .cap { grid-area: 1 / 1; opacity: 0; transform: translateY(16px); transition: opacity .4s ease, transform .7s cubic-bezier(.2, .7, .2, 1); pointer-events: none; }
.js .cap.on { opacity: 1; transform: none; pointer-events: auto; }
.cap h3 { margin: 6px 0; font: 500 clamp(22px, 2.3vw, 32px)/1.1 var(--f-display); letter-spacing: -.01em; }
.cap p:last-child { margin: 0; color: var(--muted); font-size: 16.5px; line-height: 1.55; }
.pin-stage { grid-area: stage; position: relative; margin: 0; min-height: 0; }
.pin-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

/* Parte I: cabecera y raíl arriba, texto y lectura en vivo, la tira 3D | imagen abajo, ancha */
.ori .pin-frame { grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto minmax(0, 1fr); grid-template-areas: "head rail" "caps lect" "stage stage"; }
.pin-lectura { grid-area: lect; align-self: end; justify-self: end; margin: 0; text-align: right; }
.pin-lectura span { display: block; font: 500 11px var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.pin-lectura b { display: block; font: 500 clamp(46px, 5.4vw, 84px)/1 var(--f-mono); letter-spacing: -.05em; color: var(--accent); font-variant-numeric: tabular-nums; }
/* la palabra del movimiento, enorme y en contorno, corre detrás de los paneles */
.pin-palabra { position: absolute !important; z-index: 0 !important; left: 0; right: 0; top: 9%; margin: 0; height: 1em; font: italic 500 clamp(110px, 15vw, 240px)/1 var(--f-display); letter-spacing: -.04em; pointer-events: none; }
.pin-palabra span { position: absolute; left: 50%; top: 0; white-space: nowrap; color: transparent; -webkit-text-stroke: 1.5px rgb(61 90 254 / 16%); opacity: 0; transform: translate(calc(-50% + 30vw), 0); transition: opacity .5s ease, transform .9s cubic-bezier(.2, .7, .2, 1); }
.pin-palabra span.antes { transform: translate(calc(-50% - 30vw), 0); }
.pin-palabra span.on { opacity: 1; transform: translate(calc(-50% + (.5 - var(--u, 0)) * 16vw), 0); transition: opacity .5s ease, transform .2s linear; }

/* Parte II: a la izquierda cabecera, lectura gigante, texto y raíl; a la derecha la máquina con cámara */
.maq .pin-frame { grid-template-columns: minmax(300px, 33fr) minmax(0, 67fr); grid-template-rows: auto auto minmax(0, 1fr) auto; grid-template-areas: "head stage" "lect stage" "caps stage" "rail stage"; }
.maq .pin-caps { align-self: center; }
.maq .pin-rail { align-self: end; min-width: 0; }
.maq .pin-stage { overflow: hidden; border-radius: 18px; background: #05080a; box-shadow: 0 0 0 1px var(--d-line), 0 40px 120px -40px #000; }
.cam { position: absolute; left: 0; top: 0; width: 1920px; height: 1200px; transform-origin: 0 0; transition: transform 1.2s cubic-bezier(.65, 0, .35, 1); }
.cam video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .5s ease; }
.cam video.on { opacity: 1; }
.maq-lectura { grid-area: lect; margin: 6px 0 0; --tono: var(--d-txt); }
.maq-lectura[data-tono="lenta"] { --tono: #ff6b5e; }
.maq-lectura[data-tono="aceptable"] { --tono: #ffc35c; }
.maq-lectura[data-tono="optimizada"] { --tono: #62d793; }
.maq-lectura small { display: block; font: 500 11px var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--d-muted); }
.maq-lectura b { display: block; margin-top: 2px; font: 500 clamp(64px, 7.6vw, 128px)/.95 var(--f-mono); letter-spacing: -.05em; color: var(--tono); font-variant-numeric: tabular-nums; transition: color .4s; }
.maq-lectura.texto b { font-size: clamp(38px, 4.2vw, 66px); letter-spacing: -.03em; line-height: 1.02; }
.maq-lectura span { display: inline-block; margin-top: 10px; padding: 4px 11px; border: 1px solid var(--tono); border-radius: 30px; font: 500 11px var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--tono); transition: color .4s, border-color .4s; }
.dark .pin-rail button { color: var(--d-muted); }
.dark .pin-rail button::before { background: var(--d-line); }
.dark .pin-rail button::after { background: var(--na-brand); }
.dark .pin-rail button.on, .dark .pin-rail button.hecho { color: var(--d-txt); }
.dark .pin-rail b { color: var(--na-brand); }
.dark .cap p:last-child { color: var(--d-muted); }

/* --- puente: la página se apaga con el scroll y el plano la cruza --- */
.puente { position: relative; height: 170svh; --k: 0; --t: clamp(0, (var(--k) - .45) * 1000, 1); background: var(--bg); background: color-mix(in oklab, var(--bg), var(--d-bg) calc(var(--k) * 100%)); color: color-mix(in oklab, var(--ink), var(--d-txt) calc(var(--t) * 100%)); }
.puente-in { position: sticky; top: var(--bar); height: calc(100svh - var(--bar)); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 0 24px; text-align: center; overflow: hidden; }
.puente .kicker { color: color-mix(in oklab, var(--accent), var(--na-brand) calc(var(--t) * 100%)); }
.puente .h2 { position: relative; max-width: 15em; }
.puente p:last-child { position: relative; max-width: 34em; margin: 22px auto 0; font-size: 19px; color: color-mix(in oklab, var(--ink), var(--d-txt) calc(var(--t) * 100%)); opacity: .72; }
.puente-plano { position: absolute; left: -10%; right: -10%; top: 50%; height: 2px; background: linear-gradient(90deg, transparent, var(--accent) 25%, var(--na-brand) 75%, transparent); box-shadow: 0 0 24px 2px rgb(105 184 255 / 35%); transform: translateY(calc((var(--k) - .5) * 70vh)) rotate(calc((.5 - var(--k)) * 16deg)); opacity: calc(.35 + var(--k) * .55); }

/* --- zona oscura --- */
.dark { background: var(--d-bg); color: var(--d-txt); }
.dark .kicker, .dark .tag { color: var(--na-brand); }
.dark .chap-h p:last-child, .dark .chap p:last-child { color: var(--d-muted); }
.ses-grid article, .card { padding: 28px 30px; border: 1px solid var(--d-line); border-radius: 18px; background: var(--d-panel); }
.ses-grid ul, .card ol { margin: 0; padding-left: 1.2em; color: var(--d-muted); display: grid; gap: 8px; }
.nota { margin-top: 22px; color: var(--d-muted); }
.lead2 { margin: 18px 0 0; max-width: 40em; color: var(--d-muted); font-size: 18px; }
.acc-grid { margin-top: 40px; display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 18px; }
.card h3 { margin: 8px 0 12px; font: 500 26px/1.15 var(--f-display); }
.card p { margin: 0; color: var(--d-muted); }
.card.principal { border-color: var(--na-brand); background: linear-gradient(160deg, #0f2232, var(--d-panel) 70%); }
.who .row { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; }
.who p { color: var(--d-muted); max-width: 40em; }
.roles { margin: 6px 0 14px; font: 500 12px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--d-txt) !important; }

/* --- inscripción --- */
.reg-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.when { margin: 18px 0 0; font: 500 22px/1.3 var(--f-display); }
.when small { display: block; margin-top: 4px; font: 400 14px var(--f-sans); color: var(--d-muted); }
.reg-acts { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.dark .pill.quiet { color: var(--na-brand); border-color: var(--na-brand); }
.dark .pill.off { border-color: var(--d-line); color: var(--d-muted); }
.dark .pill:not(.quiet) { background: var(--na-brand); border-color: var(--na-brand); color: #04121c; }
.form { padding: 30px 32px; border: 1px solid var(--d-line); border-radius: 18px; background: var(--d-panel); }
.form label { display: block; font: 500 11px var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--d-muted); }
.form input { width: 100%; min-height: 52px; margin-top: 10px; padding: 0 18px; border: 1px solid var(--d-line); border-radius: 40px; background: #091015; color: var(--d-txt); font-size: 17px; }
.form input:focus { outline: none; border-color: var(--na-brand); }
.form .pill { margin-top: 14px; width: 100%; min-height: 52px; font-size: 16px; }
.err { min-height: 1.4em; margin: 8px 0 0; color: #ff9c8a; font-size: 14px; }
.form .fine { color: var(--d-muted); }
.ok { display: none; }
.form.hecho .ask { display: none; }
.form.hecho .ok { display: block; }
.ok h3 { margin: 8px 0 8px; font: 500 30px/1.15 var(--f-display); }
.ok p { color: var(--d-muted); }
.ok .acts { margin-top: 18px; }
.ok .acts .pill { width: auto; margin-top: 0; }
.cerrada { margin: 0; color: var(--d-muted); }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding: 30px clamp(24px, 4vw, 64px) 40px; border-top: 1px solid var(--d-line); font-size: 13px; color: var(--d-muted); }
.foot b { margin-right: 8px; color: var(--d-txt); }

/* --- aparición --- */
.rv { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } .js .cap, .cam, .pin-palabra span { transition: none; } }

/* --- pantallas angostas --- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: calc(var(--bar) + 28px); }
  .pin { height: calc(var(--pasos) * 100svh + 100svh); }
  .pin-frame { gap: 12px 16px; padding: 14px 20px 18px; }
  .ori .pin-frame, .maq .pin-frame { grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto minmax(0, 1fr) auto auto; grid-template-areas: "head lect" "stage stage" "caps caps" "rail rail"; }
  .pin-t { font-size: clamp(20px, 5.4vw, 28px); }
  .pin-head .largo { display: none; }
  .pin-rail { min-width: 0; }
  .pin-lectura { align-self: start; }
  .pin-lectura b { font-size: clamp(34px, 9vw, 52px); }
  .pin-palabra { top: 6%; font-size: 26vw; }
  .cap h3 { font-size: 21px; }
  .cap p:last-child { font-size: 14.5px; line-height: 1.5; }
  .maq-lectura { margin: 0; text-align: right; }
  .maq-lectura b { font-size: clamp(40px, 11vw, 64px); }
  .maq-lectura.texto b { font-size: clamp(22px, 6vw, 34px); }
  .maq-lectura span { margin-top: 6px; font-size: 10px; }
  .maq .pin-stage { border-radius: 14px; }
  .acc-grid { grid-template-columns: 1fr; }
  .reg-grid, .who .row, .dos-grid, .ses-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .bar { padding: 0 14px; }
  .bar-date, .bar-r .pill.quiet { display: none; }
  .wrap { width: calc(100% - 32px); }
  .hero { padding-left: 16px; padding-right: 16px; }
  .facts { grid-template-columns: 1fr 1fr; }
  .acts .pill { flex: 1 1 100%; }
  .pin-frame { padding: 12px 16px 16px; }
  .pin-rail button { font-size: 9.5px; letter-spacing: .04em; }
  .dos-grid article, .ses-grid article, .card, .form { padding: 22px 20px; }
}