@font-face { font-family: "Fraunces"; src: url("assets/fonts/fraunces-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Fraunces"; src: url("assets/fonts/fraunces-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("assets/fonts/plus-jakarta-sans-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("assets/fonts/plus-jakarta-sans-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("assets/fonts/plus-jakarta-sans-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-display: swap; }

@property --giro { syntax: "<angle>"; inherits: false; initial-value: 0deg; }

:root {
  color-scheme: dark;
  --noche: #060d20;
  --noche-2: #0c1a3c;
  --azul: #2f9bff;
  --cielo: #7cc4ff;
  --oro: #e9c67e;
  --oro-2: #fff0c9;
  --oro-3: #b98a35;
  --texto: #eef3fb;
  --suave: #b4c1d8;
  --vidrio: rgba(16, 31, 68, .62);
  --filo: rgba(142, 178, 232, .22);
  --titulos: "Fraunces", Georgia, serif;
  --borde: clamp(20px, 5vw, 72px);
  --ancho: 1280px;
  --curva: cubic-bezier(.2, .75, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; -webkit-text-size-adjust: 100%; background: var(--noche); }
body { margin: 0; background: var(--noche); color: var(--texto); font: 400 1.0625rem/1.65 "Plus Jakarta Sans", system-ui, sans-serif; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
h1, h2 { font-family: var(--titulos); font-weight: 700; margin: 0; line-height: 1.04; letter-spacing: -.015em; text-wrap: balance; }
h2 { font-size: clamp(2.3rem, 5.2vw, 4.25rem); }
p, ul, ol { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-underline-offset: .2em; }
:focus-visible { outline: 3px solid var(--oro); outline-offset: 3px; border-radius: 6px; }
main:focus { outline: none; }

.saltar { position: fixed; left: 16px; top: -72px; z-index: 40; background: var(--oro); color: var(--noche); padding: 10px 16px; font-weight: 700; border-radius: 10px; }
.saltar:focus { top: 16px; }

/* Fondo vivo */
.fondo { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: radial-gradient(120% 90% at 50% -10%, #12306d 0%, var(--noche-2) 38%, var(--noche) 75%); }
.aurora { position: absolute; width: 80vmax; height: 80vmax; border-radius: 50%; opacity: .95; will-change: transform; }
.a1 { left: -22vmax; top: -24vmax; background: radial-gradient(closest-side, rgba(47, 155, 255, .55), transparent); animation: deriva1 22s ease-in-out infinite alternate; }
.a2 { right: -26vmax; top: 18vh; background: radial-gradient(closest-side, rgba(233, 198, 126, .3), transparent); animation: deriva2 28s ease-in-out infinite alternate; }
.a3 { left: 12vw; bottom: -38vmax; background: radial-gradient(closest-side, rgba(30, 86, 214, .5), transparent); animation: deriva3 25s ease-in-out infinite alternate; }
.malla { position: absolute; inset: 0; opacity: .5; background-image: linear-gradient(rgba(142, 178, 232, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(142, 178, 232, .07) 1px, transparent 1px); background-size: 72px 72px; -webkit-mask-image: radial-gradient(90% 70% at 50% 30%, #000, transparent); mask-image: radial-gradient(90% 70% at 50% 30%, #000, transparent); }
#polvo { position: absolute; inset: 0; width: 100%; height: 100%; }
@keyframes deriva1 { to { transform: translate(16vw, 14vh) scale(1.15); } }
@keyframes deriva2 { to { transform: translate(-18vw, 22vh) scale(.9); } }
@keyframes deriva3 { to { transform: translate(14vw, -18vh) scale(1.12); } }

/* Barra */
.barra { position: fixed; z-index: 20; top: 14px; left: 50%; translate: -50% 0; width: min(920px, calc(100% - 24px)); display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 8px 12px 8px 10px; border-radius: 999px; background: rgba(9, 19, 44, .72); border: 1px solid var(--filo); -webkit-backdrop-filter: blur(14px) saturate(1.4); backdrop-filter: blur(14px) saturate(1.4); box-shadow: 0 10px 34px rgba(0, 0, 0, .35); overflow: hidden; }
.barra-marca { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 1.1rem var(--titulos); }
.barra-marca img { width: 38px; height: 38px; border-radius: 50%; }
.barra ul { display: flex; gap: 2px; }
.barra li a { display: block; padding: 8px 14px; border-radius: 999px; text-decoration: none; font-weight: 500; font-size: .95rem; color: var(--suave); transition: color .2s, background .2s; }
.barra li a:hover { color: var(--noche); background: var(--oro); }
.barra-avance { position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; transform-origin: left; transform: scaleX(var(--avance, 0)); background: linear-gradient(90deg, var(--azul), var(--oro)); box-shadow: 0 0 10px var(--oro); }

/* Portada */
.portada { position: relative; min-height: 100svh; max-width: 1440px; margin-inline: auto; padding: 112px var(--borde) 64px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 64px); align-items: center; }
.sello { display: inline-flex; align-items: center; gap: 10px; padding: 7px 16px 7px 12px; border-radius: 999px; border: 1px solid rgba(233, 198, 126, .5); background: rgba(233, 198, 126, .1); color: var(--oro-2); font-weight: 500; }
.sello span { width: 9px; height: 9px; border-radius: 50%; background: var(--oro); box-shadow: 0 0 12px 3px rgba(233, 198, 126, .8); animation: latido 2.4s ease-in-out infinite; }
@keyframes latido { 50% { transform: scale(.7); opacity: .6; } }
h1 { font-size: clamp(5rem, 13.5vw, 12rem); line-height: .92; margin-top: 20px; }
h1 span { display: inline-block; background: linear-gradient(100deg, var(--oro-3) 0%, var(--oro) 25%, var(--oro-2) 45%, #fff 50%, var(--oro-2) 55%, var(--oro) 75%, var(--oro-3) 100%); background-size: 250% 100%; -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; filter: drop-shadow(0 0 26px rgba(233, 198, 126, .42)); animation: brillo 7s linear infinite; }
@keyframes brillo { from { background-position: 125% 0; } to { background-position: -125% 0; } }
.portada-lema { margin-top: 18px; font: 600 clamp(1.45rem, 2.8vw, 2.25rem)/1.15 var(--titulos); color: var(--cielo); text-shadow: 0 0 24px rgba(47, 155, 255, .55); }
.portada-inst { margin-top: 14px; color: var(--suave); }
.boton { display: inline-block; margin-top: 28px; padding: 14px 28px; border-radius: 999px; font-weight: 700; text-decoration: none; color: var(--noche); background: linear-gradient(120deg, var(--oro-2), var(--oro)); box-shadow: 0 0 0 1px rgba(255, 240, 201, .6), 0 12px 38px rgba(233, 198, 126, .4); transition: transform .2s var(--curva), box-shadow .2s; }
.boton:hover { transform: translateY(-3px); box-shadow: 0 0 0 1px #fff, 0 16px 56px rgba(233, 198, 126, .7); }
.boton:active { transform: translateY(0) scale(.98); }

.abanico { position: relative; aspect-ratio: 1 / .9; width: 100%; perspective: 1200px; }
.halo { position: absolute; inset: 8%; border-radius: 50%; background: radial-gradient(closest-side, rgba(47, 155, 255, .5), rgba(233, 198, 126, .16) 60%, transparent); animation: latido 7s ease-in-out infinite; }
.carta { position: absolute; width: 58%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 16px; border: 2px solid rgba(255, 240, 201, .75); box-shadow: 0 22px 56px rgba(0, 0, 0, .55), 0 0 30px rgba(47, 155, 255, .28); transform: translate3d(calc(var(--px, 0) * var(--f) * 1px), calc(var(--py, 0) * var(--f) * 1px), 0) rotate(var(--r)); animation: entra .9s var(--curva) both, flota 7s ease-in-out infinite alternate; animation-delay: var(--d), calc(var(--d) + .9s); }
.c1 { --r: -13deg; --f: 10; --d: .1s; left: 0; top: 7%; }
.c2 { --r: 11deg; --f: 16; --d: .2s; right: 0; top: 3%; }
.c3 { --r: -7deg; --f: 22; --d: .3s; left: 2%; bottom: 7%; }
.c4 { --r: 8deg; --f: 26; --d: .4s; right: 2%; bottom: 3%; }
.c5 { --r: -1deg; --f: 36; --d: .55s; left: 19%; top: 27%; width: 64%; z-index: 2; border-color: var(--oro); box-shadow: 0 30px 80px rgba(0, 0, 0, .65), 0 0 56px rgba(233, 198, 126, .5); }
@keyframes entra { from { opacity: 0; translate: 0 60px; scale: .86; } to { opacity: 1; translate: 0 0; scale: 1; } }
@keyframes flota { to { translate: 0 -12px; } }

/* Cinta */
.cinta { overflow: hidden; border-block: 1px solid rgba(233, 198, 126, .35); background: rgba(233, 198, 126, .07); box-shadow: 0 0 44px rgba(233, 198, 126, .14); }
.cinta-pista { display: flex; width: max-content; animation: cinta 40s linear infinite; }
.cinta span { padding: 14px 28px; font: 600 clamp(1.15rem, 2vw, 1.5rem) var(--titulos); color: var(--oro); white-space: nowrap; }
.cinta span::after { content: "✦"; margin-left: 56px; color: var(--cielo); }
@keyframes cinta { to { transform: translateX(-33.333%); } }

/* Vidrio y tarjetas con borde vivo */
.vidrio, .tarjeta { position: relative; border-radius: 22px; background: var(--vidrio); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); box-shadow: 0 18px 54px rgba(1, 6, 22, .55); isolation: isolate; }
.vidrio::before, .tarjeta::before { content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none; border-radius: inherit; padding: 1.5px; background: conic-gradient(from var(--giro), var(--filo) 0 45%, var(--azul) 58%, var(--oro-2) 66%, var(--oro) 72%, var(--filo) 86%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); animation: giro 7s linear infinite; }
@keyframes giro { to { --giro: 360deg; } }
.tarjeta::after { content: ""; position: absolute; inset: 0; z-index: 3; pointer-events: none; border-radius: inherit; opacity: 0; transition: opacity .3s; background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 233, 176, .2), transparent 70%); }
.tarjeta { transition: transform .35s var(--curva), box-shadow .35s; transform: perspective(1000px) rotateX(var(--tx, 0deg)) rotateY(var(--ty, 0deg)); }
.tarjeta:hover { box-shadow: 0 24px 70px rgba(1, 6, 22, .65), 0 0 46px rgba(47, 155, 255, .34), 0 0 90px rgba(233, 198, 126, .16); }
.tarjeta:hover::after { opacity: 1; }
.destacada { box-shadow: 0 18px 54px rgba(1, 6, 22, .55), 0 0 56px rgba(233, 198, 126, .3); }
.destacada::before { padding: 2px; background: conic-gradient(from var(--giro), var(--oro-3), var(--oro-2), var(--oro), var(--azul), var(--oro-3)); }

.foto { display: block; width: 100%; padding: 0; border: 0; background: var(--noche-2); cursor: zoom-in; overflow: hidden; border-radius: 22px 22px 0 0; }
.foto img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .6s var(--curva); }
.foto:hover img { transform: scale(1.05); }
figure { margin: 0; min-width: 0; }
figcaption { padding: 18px 22px 22px; color: var(--suave); }
figcaption strong { display: block; margin-bottom: 4px; font: 600 1.45rem/1.15 var(--titulos); color: var(--texto); }

/* Apertura */
.intro, .cap, .credito { max-width: calc(var(--ancho) + 2 * var(--borde)); margin-inline: auto; padding-inline: var(--borde); }
.intro { padding-block: clamp(72px, 11vw, 136px) 24px; }
.intro-texto { max-width: 760px; }
.intro-texto p:not(.docente) { margin-top: 18px; font-size: clamp(1.1rem, 1.7vw, 1.3rem); color: var(--suave); }
.docente { margin-top: 22px; font-weight: 700; }
.docente span { display: block; font-weight: 400; color: var(--oro); }
.cifras { margin-top: 44px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.cifras li { padding: 24px 26px; color: var(--suave); }
.cifras strong { display: block; font: 700 clamp(3rem, 6vw, 4.75rem)/1 var(--titulos); color: var(--oro); text-shadow: 0 0 26px rgba(233, 198, 126, .5); }
.cifras sup { font-size: .5em; }

/* Capítulos */
.cap { padding-block: clamp(64px, 9vw, 120px); }
.cap-cab { max-width: 760px; margin-bottom: clamp(32px, 5vw, 56px); }
.cap-num { display: inline-block; padding: 4px 14px; margin-bottom: 14px; border-radius: 999px; border: 1px solid rgba(124, 196, 255, .45); color: var(--cielo); font-weight: 500; background: rgba(47, 155, 255, .1); }
.cap-cab h2 { background: linear-gradient(180deg, #fff 30%, var(--cielo)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; padding-bottom: .08em; }
.cap-cab > p:last-child { margin-top: 14px; font-size: 1.15rem; color: var(--suave); }

/* Línea de tiempo */
.linea { position: relative; display: grid; gap: clamp(40px, 6vw, 72px); }
.linea::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; translate: -1px 0; background: var(--filo); border-radius: 2px; }
.linea-luz { position: absolute; left: 50%; top: 0; width: 4px; height: 100%; translate: -2px 0; transform-origin: top; transform: scaleY(var(--linea, 0)); background: linear-gradient(180deg, var(--azul), var(--oro)); border-radius: 4px; box-shadow: 0 0 18px var(--azul), 0 0 34px rgba(233, 198, 126, .6); }
.hito { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(48px, 8vw, 104px); align-items: center; }
.hito::before { content: ""; position: absolute; left: 50%; top: 50%; width: 18px; height: 18px; translate: -50% -50%; border-radius: 50%; background: var(--oro); border: 3px solid var(--noche); box-shadow: 0 0 0 2px var(--oro), 0 0 22px 5px rgba(233, 198, 126, .7); z-index: 2; }
.hito-fecha { font: 700 clamp(2rem, 4.2vw, 3.6rem)/1.05 var(--titulos); color: var(--oro); text-shadow: 0 0 30px rgba(233, 198, 126, .45); text-align: right; }
.hito-fecha span { display: block; font-size: .5em; color: var(--cielo); text-shadow: none; }
.hito:nth-child(odd) .hito-fecha { order: 2; text-align: left; }

/* Bento */
.bento { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.bento .grande, .bento .alta { grid-row: span 2; display: flex; flex-direction: column; }
.bento .grande .foto, .bento .alta .foto { position: relative; flex: 1; min-height: 320px; }
.bento .grande .foto img, .bento .alta .foto img { position: absolute; inset: 0; aspect-ratio: auto; height: 100%; }
.bento .grande .foto img { object-position: 78% 50%; }
.bento-lectura { grid-template-columns: 1fr 1.25fr; }
.logro-lugar { display: block; font: 700 clamp(1.6rem, 3vw, 2.3rem)/1.1 var(--titulos); color: var(--oro); text-shadow: 0 0 24px rgba(233, 198, 126, .6); margin-bottom: 4px; }
.logro figcaption strong { font-size: clamp(1.8rem, 3vw, 2.4rem); color: #fff; }
.dupla { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }

/* Institución */
.institucion { max-width: var(--ancho); margin: 24px auto 72px; width: calc(100% - 2 * var(--borde)); display: flex; gap: clamp(20px, 4vw, 44px); align-items: center; padding: clamp(24px, 4vw, 44px); }
.institucion img { width: clamp(92px, 12vw, 136px); flex: none; border-radius: 50%; box-shadow: 0 0 34px rgba(233, 198, 126, .4); }
.institucion h2 { font-size: clamp(1.5rem, 2.8vw, 2.3rem); }
.institucion p { margin-top: 8px; color: var(--suave); }
.institucion a { color: var(--oro); font-weight: 700; }

/* Crédito */
.credito { padding-block: 0 72px; }
.credito-caja { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 32px; padding: 16px 24px; border: 1px solid var(--filo); border-radius: 14px; background: rgba(16, 31, 68, .4); color: var(--suave); font-size: .95rem; }
.credito-nombre { font-weight: 700; color: var(--texto); text-decoration-color: var(--oro); }
.credito-nd { display: flex; align-items: center; gap: 10px; }
.credito-logo img { width: 128px; }

/* Pausa */
.pausa { position: fixed; z-index: 15; right: 14px; bottom: 14px; min-height: 40px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--filo); background: rgba(9, 19, 44, .82); color: var(--suave); font: 500 .85rem "Plus Jakarta Sans", system-ui, sans-serif; cursor: pointer; }
.pausa:hover { color: var(--noche); background: var(--oro); }
.pausado *, .pausado *::before, .pausado *::after { animation-play-state: paused !important; }

/* Visor */
dialog { border: 1px solid rgba(233, 198, 126, .5); border-radius: 18px; padding: 14px; background: var(--noche-2); color: var(--texto); max-width: min(1100px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); box-shadow: 0 0 70px rgba(47, 155, 255, .35); }
dialog[open] { animation: abre .3s var(--curva); }
@keyframes abre { from { opacity: 0; transform: scale(.95); } }
dialog::backdrop { background: rgba(3, 8, 22, .88); }
#visor-img { max-height: 70dvh; width: auto; margin-inline: auto; border-radius: 10px; }
#visor-txt { margin-top: 12px; max-width: 60em; color: var(--suave); }
.visor-ctrl { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.visor-ctrl button { font: 700 1rem "Plus Jakarta Sans", system-ui, sans-serif; min-height: 44px; padding: 8px 20px; border-radius: 999px; border: 1px solid var(--oro); background: transparent; color: var(--oro-2); cursor: pointer; }
.visor-ctrl button:hover { background: var(--oro); color: var(--noche); }
#visor-cerrar { margin-left: auto; }

/* Aparición al bajar */
.js .aparece { opacity: 0; translate: 0 44px; scale: .97; transition: opacity .8s var(--curva), translate .8s var(--curva), scale .8s var(--curva); }
.js .aparece.visto { opacity: 1; translate: 0 0; scale: 1; }
.js .hito.aparece figure { clip-path: inset(0 0 100% 0 round 22px); transition: clip-path .9s var(--curva) .1s, transform .35s var(--curva), box-shadow .35s; }
.js .hito.aparece.visto figure { clip-path: inset(0 0 0 0 round 22px); }

@media (max-width: 899px) {
  html { scroll-padding-top: 84px; }
  .portada { grid-template-columns: minmax(0, 1fr); padding-top: 104px; text-align: left; }
  h1 { font-size: clamp(5rem, 24vw, 9rem); }
  .abanico { max-width: 560px; margin-inline: auto; }
  .bento, .bento-lectura { grid-template-columns: 1fr 1fr; }
  .linea::before { left: 9px; }
  .linea-luz { left: 9px; }
  .hito { grid-template-columns: minmax(0, 1fr); gap: 14px; padding-left: 34px; }
  .hito::before { left: 10px; top: 22px; }
  .hito-fecha, .hito:nth-child(odd) .hito-fecha { order: 0; text-align: left; }
  .institucion { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .bento, .bento-lectura, .dupla, .cifras { grid-template-columns: minmax(0, 1fr); }
  .bento .grande, .bento .alta { grid-row: auto; }
  .bento .grande .foto, .bento .alta .foto { min-height: 0; }
  .bento .alta .foto img { position: static; aspect-ratio: 3 / 4; height: auto; }
  .bento .grande .foto img { position: static; aspect-ratio: 4 / 3; height: auto; }
  .barra ul { display: none; }
  .barra { width: auto; left: 12px; translate: 0 0; padding-right: 18px; }
  .pausa { font-size: .8rem; }
  .cifras li { padding: 18px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .aparece, .js .hito.aparece figure { opacity: 1; translate: none; scale: none; clip-path: none; }
  .carta { opacity: 1; }
  .pausa { display: none; }
  .tarjeta { transform: none; }
}