/* ============ tokens ============ */
:root{
  --azul-profundo:#12324A; --azul-principal:#247DB5; --azul-suave:#EAF3F8;
  --blanco:#fff; --texto:#263746; --gris-suave:#F5F7F8; --linea:#DCE9EF;
  --sans:'Plus Jakarta Sans',system-ui,sans-serif;
  --curva:cubic-bezier(.22,.8,.3,1);
  --radio-foto:24px; --radio-caja:16px; --radio-ui:10px;
  --e-xs:.5rem; --e-sm:1rem; --e-md:1.75rem; --e-lg:2.75rem; --e-xl:4.5rem; --e-2xl:7rem;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font-family:var(--sans);font-weight:400;color:var(--texto);line-height:1.7;background:var(--blanco);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--sans);font-weight:700;line-height:1.2;letter-spacing:-.01em;color:var(--azul-profundo)}
img{max-width:100%;display:block}
a{color:inherit}
.env{width:min(1160px,91%);margin-inline:auto}
.sec{padding:var(--e-xl) 0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* secciones de fondo oscuro (azul profundo) */
.osc{background:var(--azul-profundo);color:#fff}
.osc h1,.osc h2{color:#fff}
.osc .kicker{color:#fff;border-bottom-color:rgba(255,255,255,.5)}
.osc .enc p{color:rgba(255,255,255,.82)}

/* ============ botones ============ */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.9em 2em;border-radius:var(--radio-ui);font-family:var(--sans);font-size:1rem;font-weight:600;text-decoration:none;cursor:pointer;border:none;transition:transform .2s var(--curva),box-shadow .2s,background-color .2s}
.btn-p{background:var(--azul-principal);color:#fff;box-shadow:0 6px 16px rgba(36,125,181,.25)}
.btn-p:hover{background:var(--azul-profundo);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,50,74,.28)}
.btn-luz{background:rgba(255,255,255,.94);color:var(--azul-profundo)}
.btn-luz:hover{background:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(9,36,60,.18)}

/* ============ barra ============ */
.barra{position:sticky;top:0;z-index:900;background:#fff;border-bottom:1px solid var(--linea);box-shadow:0 2px 14px rgba(18,50,74,.05)}
.barra .env{display:flex;align-items:center;justify-content:space-between;height:88px;gap:1.5rem}
.marca{display:inline-flex;align-items:center}
.marca img{height:42px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:2rem}
.nav a{font-size:.95rem;font-weight:600;color:var(--texto);text-decoration:none;transition:color .2s}
.nav a:hover{color:var(--azul-principal)}
.nav a.btn,.nav a.btn:hover{color:#fff}
.menu-btn{display:none;background:none;border:none;font-size:1.7rem;color:var(--azul-profundo);cursor:pointer;line-height:1}

/* ============ hero ============ */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;overflow:hidden;background:var(--azul-profundo)}
.hero-fondo{position:absolute;inset:0;z-index:0}
.hero-fondo video,.hero-fondo .cartel{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-fondo .cartel{z-index:1;transition:opacity .6s ease}
.hero-fondo::after{content:"";position:absolute;inset:0;z-index:2;background:linear-gradient(105deg,rgba(18,50,74,.76) 0%,rgba(18,50,74,.5) 32%,rgba(18,50,74,.14) 58%,rgba(18,50,74,0) 78%),linear-gradient(to top,rgba(18,50,74,.46),rgba(18,50,74,0) 40%)}
.hero .env{position:relative;z-index:3}
.hero-txt{max-width:36rem}
.ojo{display:inline-flex;align-items:center;gap:.5em;margin-bottom:1.5rem;padding:.5em 1.15em;border-radius:999px;background:rgba(255,255,255,.14);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.3);font-size:.85rem;font-weight:600;color:#fff}
.hero h1{font-size:clamp(2.4rem,5.2vw,4rem);font-weight:800;line-height:1.14;margin-bottom:1.3rem;color:#fff}
.hero h1 em{font-style:normal;color:var(--azul-suave)}
.hero-sub{font-size:clamp(1.05rem,1.6vw,1.2rem);color:rgba(255,255,255,.86);margin-bottom:2.3rem;max-width:34rem}
.hero-acc{display:flex;flex-wrap:wrap;align-items:center;gap:1rem}

/* ============ credenciales ============ */
.credenciales .env{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:var(--e-md);padding:var(--e-lg) 0}
.cred strong{display:block;font-size:2.1rem;font-weight:700;color:#fff;line-height:1.1;margin-bottom:.2rem}
.cred span{font-size:.93rem;color:var(--azul-suave);line-height:1.5}

/* ============ encabezados ============ */
.enc{max-width:44rem;margin-bottom:var(--e-md)}
.kicker{display:inline-block;margin-bottom:var(--e-sm);font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--azul-principal);padding-bottom:.4em;border-bottom:2px solid var(--azul-principal)}
.enc h2{font-size:clamp(2rem,3.6vw,2.6rem);margin-bottom:1rem}
.enc p{color:var(--texto);font-size:1.06rem}

/* ============ niveles ============ */
.niveles{background:var(--azul-suave)}
.rejilla-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--e-md)}
.nivel{background:#fff;border-radius:var(--radio-caja);padding:1rem;display:flex;flex-direction:column;box-shadow:0 1px 3px rgba(18,50,74,.07);border:1px solid rgba(18,50,74,.06);transition:transform .25s var(--curva),box-shadow .25s}
.nivel:hover{transform:translateY(-4px);box-shadow:0 16px 30px rgba(18,50,74,.12)}
.nivel .foto{position:relative;aspect-ratio:4/3;border-radius:var(--radio-foto);overflow:hidden;background:var(--azul-principal) center/cover no-repeat;margin-bottom:1.3rem}
.nivel .cuerpo{padding:0 .9rem 1.3rem;flex:1;display:flex;flex-direction:column}
.nivel h3{font-size:1.4rem;margin-bottom:.6rem}
.nivel p{color:var(--texto);font-size:.98rem;margin-bottom:1.3rem;flex:1}
.rvoe{display:inline-block;padding:.4em .9em;border-radius:6px;background:var(--azul-suave);font-size:.76rem;font-weight:600;color:var(--azul-principal);align-self:flex-start}
.mas-info{display:inline-flex;align-items:center;gap:.35em;margin-top:1rem;font-weight:600;color:var(--azul-principal);text-decoration:none;font-size:.94rem;align-self:flex-start;transition:color .2s,gap .2s}
.mas-info:hover{color:var(--azul-profundo);gap:.55em}

/* ============ formación ============ */
.duo{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(2.4rem,5.5vw,4.5rem);align-items:center}
.duo .marco{aspect-ratio:5/5.6;border-radius:var(--radio-foto);background:var(--azul-principal) center/cover no-repeat}
.pilares{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem;margin-top:var(--e-lg)}
.pilar{padding:var(--e-md);border-radius:var(--radio-caja);transition:transform .25s var(--curva)}
.pilar:hover{transform:translateY(-4px)}
.pilar h3{font-size:1.05rem;margin-bottom:.5rem}
.pilar p{font-size:.95rem;color:var(--texto)}
.pilar:nth-child(odd){background:var(--azul-suave)}
.pilar:nth-child(even){background:var(--gris-suave)}

/* ============ campus ============ */
.sub{display:block;color:var(--azul-principal);font-weight:600;font-size:.86rem;margin-bottom:.5rem}
.carrusel .toma{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1s ease}
.carrusel .toma.activa{opacity:1}

/* ============ video institucional ============ */
.video-marco{position:relative;border-radius:var(--radio-caja);overflow:hidden;background:var(--azul-profundo);aspect-ratio:16/9}
.video-marco video{width:100%;height:100%;object-fit:cover;display:block}
.video-marco::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,50,74,.04),rgba(18,50,74,.4));pointer-events:none;transition:opacity .3s}
.video-play{position:absolute;inset:0;margin:auto;width:84px;height:84px;border-radius:50%;background:rgba(255,255,255,.95);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 24px rgba(18,50,74,.3);transition:transform .25s var(--curva),background .25s,opacity .25s}
.video-play svg{width:34px;height:34px;fill:var(--azul-principal);margin-left:4px}
.video-play:hover{transform:scale(1.08);background:#fff}
.video-marco.reproduciendo::after,.video-marco.reproduciendo .video-play{opacity:0;pointer-events:none}

/* ============ admisión ============ */
.pasos{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:1rem;margin-bottom:var(--e-lg)}
.paso{padding:var(--e-md) var(--e-sm);border-radius:var(--radio-caja);background:rgba(255,255,255,.06)}
.paso .num{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:1.15rem;font-weight:700;margin-bottom:1rem}
.paso h3{font-size:1.1rem;margin-bottom:.5rem;color:#fff}
.paso p{color:rgba(255,255,255,.78);font-size:.98rem}

/* ============ programa (páginas de nivel) ============ */
.regreso{display:inline-flex;align-items:center;gap:.4em;margin-bottom:1.8rem;font-size:.92rem;font-weight:600;color:rgba(255,255,255,.8);text-decoration:none;transition:color .2s}
.regreso:hover{color:#fff}
.programa-hero{position:relative;overflow:hidden;min-height:62vh;display:flex;align-items:center;padding:clamp(3.2rem,8vw,5.5rem) 0;background:var(--azul-profundo) center/cover no-repeat}
.programa-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,50,74,.58),rgba(18,50,74,.82));z-index:0}
.programa-hero .env{position:relative;z-index:1}
.programa-hero .caja{max-width:42rem;margin-inline:auto;text-align:center}
.programa-hero .kicker{margin-inline:auto;background:rgba(255,255,255,.16);backdrop-filter:blur(6px);color:#fff;border-bottom:none;border-radius:999px;padding:.5em 1.15em}
.programa-hero h1{font-size:clamp(2.3rem,5vw,3.6rem);margin:1rem 0 1.3rem;color:#fff}
.programa-hero p{color:rgba(255,255,255,.86);font-size:1.08rem;margin-bottom:2rem}
.programa-preescolar{background-image:url('img/preescolar-hero.jpg')}
.programa-primaria{background-image:url('img/primaria.jpg')}
.programa-secundaria{background-image:url('img/secundaria.jpg')}

.objetivos-txt{max-width:34rem;border-left:3px solid var(--azul-principal);padding-left:1.8rem}
.objetivos .env{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2.2rem,5.5vw,4.5rem);align-items:center;padding:4rem 0}
.objetivos ul{list-style:none;display:grid;gap:1.1rem}
.objetivos li{color:rgba(255,255,255,.85);font-size:1.02rem;padding-left:1.3rem;position:relative}
.objetivos li::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;border-radius:50%;background:var(--azul-suave)}
.objetivos .foto{aspect-ratio:4/3.6;border-radius:var(--radio-foto);background:var(--azul-principal) center/cover no-repeat}

/* ============ contacto ============ */
.contacto{background:var(--azul-suave)}
.contacto .env{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:start}
.forma{background:#fff;padding:clamp(1.8rem,4vw,2.6rem);border-radius:var(--radio-caja);border:1px solid var(--linea)}
.campo{margin-bottom:1.1rem}
.campo label{display:block;font-size:.9rem;font-weight:600;color:var(--azul-profundo);margin-bottom:.4rem}
.campo input,.campo select,.campo textarea{width:100%;padding:.85em 1em;border:2px solid var(--linea);border-radius:8px;font-family:var(--sans);font-size:1rem;font-weight:400;color:var(--texto);background:#fff;transition:border-color .2s}
.campo input:focus,.campo select:focus,.campo textarea:focus{outline:none;border-color:var(--azul-principal)}
.campo textarea{resize:vertical;min-height:96px}
.aviso{font-size:.86rem;color:var(--texto);margin-top:.9rem}
.datos{display:grid;gap:1rem;margin-bottom:2rem}
.dato-caja{display:block;padding:1.3rem 1.5rem;background:#fff;border-radius:var(--radio-caja);text-decoration:none;border:1px solid var(--linea);transition:transform .22s var(--curva)}
.dato-caja:hover{transform:translateY(-3px)}
.dato-caja small{display:block;font-size:.85rem;color:var(--texto);opacity:.7;margin-bottom:.1rem}
.dato-caja strong{font-size:1.03rem;color:var(--azul-profundo);font-weight:600}
.mapa{border-radius:var(--radio-caja);overflow:hidden;border:0;width:100%;aspect-ratio:4/3}

/* ============ pie ============ */
.pie{position:relative;overflow:hidden;background:var(--azul-profundo);padding:var(--e-xl) 0 2rem;font-size:.96rem;color:rgba(255,255,255,.7)}
.pie::before{content:"";position:absolute;inset:-30% -15%;background:
    radial-gradient(40% 48% at 18% 25%,rgba(36,125,181,.72),transparent 70%),
    radial-gradient(36% 44% at 78% 70%,rgba(147,197,224,.48),transparent 72%),
    radial-gradient(48% 58% at 55% 10%,rgba(8,26,40,.7),transparent 75%);
  filter:blur(50px);animation:pie-aurora 14s ease-in-out infinite alternate;pointer-events:none}
.pie::after{content:"";position:absolute;inset:0;background:radial-gradient(480px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.12),transparent 60%);opacity:0;transition:opacity .35s;pointer-events:none}
.pie:hover::after{opacity:1}
.pie .env{position:relative;z-index:1}
.pie h4{color:#fff;font-size:1.1rem;margin-bottom:1.1rem}
.pie a{color:rgba(255,255,255,.7);text-decoration:none;transition:color .2s}
.pie a:hover{color:#fff}
.pie a.destacado{display:inline-flex;align-items:center;gap:.4em;color:var(--azul-suave);font-weight:600}
.pie a.destacado:hover{color:#fff}
.pie a.destacado span{transition:transform .2s var(--curva)}
.pie a.destacado:hover span{transform:translateX(4px)}
.pie-rejilla{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2.6rem;margin-bottom:3rem}
.pie-contacto{display:flex;align-items:baseline;gap:.5em;margin-bottom:.4rem}
.pie-contacto span{min-width:8rem;font-size:.83rem;color:rgba(255,255,255,.5)}
.pie ul{list-style:none;display:grid;gap:.62rem}
.pie ul a{display:inline-block;padding:.28rem .6rem;margin:-.28rem -.6rem;border-radius:8px;transition:color .2s,background-color .25s,transform .25s var(--curva)}
.pie ul a:hover{background:rgba(255,255,255,.08);transform:translateX(4px)}
.legal{border-top:1px solid rgba(255,255,255,.15);padding-top:1.7rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;font-size:.87rem;color:rgba(255,255,255,.55)}

/* ============ redes sociales ============ */
.redes{display:flex;gap:.65rem}
.red-icono{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--gris-suave);flex-shrink:0;animation:red-latido 2.6s ease-in-out infinite;transition:transform .4s cubic-bezier(.34,1.56,.64,1),background .35s ease}
.red-icono:nth-child(2){animation-delay:.5s}
.red-icono svg{width:18px;height:18px;fill:var(--texto);transition:fill .3s ease}
.red-icono:hover{transform:scale(1.18) rotate(-10deg);animation-play-state:paused}
.red-icono:hover svg{fill:#fff}
.red-icono.fb:hover{background:#1877F2}
.red-icono.ig:hover{background:radial-gradient(circle at 30% 107%,#fdf497 0%,#fdf497 5%,#fd5949 45%,#d6249f 60%,#285AEB 90%)}
.pie .red-icono{background:rgba(255,255,255,.14)}
.pie .red-icono svg{fill:#fff}
@keyframes red-latido{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}
@keyframes pie-aurora{
  0%{transform:translate(-4%,-2%) scale(1) rotate(0deg)}
  50%{transform:translate(3%,4%) scale(1.18) rotate(8deg)}
  100%{transform:translate(-2%,3%) scale(1.06) rotate(-6deg)}
}

/* ============ whatsapp ============ */
.wa{position:fixed;right:24px;bottom:24px;z-index:990;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 22px rgba(0,0,0,.26);transition:transform .25s var(--curva)}
.wa:hover{transform:scale(1.09)}
.wa svg{width:30px;height:30px;fill:#fff}

/* ============ volver arriba ============ */
.subir{position:fixed;right:24px;bottom:92px;z-index:990;width:48px;height:48px;border-radius:50%;background:var(--azul-principal);border:none;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(18,58,92,.28);cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .3s ease,transform .3s var(--curva),background-color .2s}
.subir.visible{opacity:1;pointer-events:auto;transform:none}
.subir:hover{background:var(--azul-profundo)}
.subir svg{width:20px;height:20px;fill:#fff}

/* ============ reveals ============ */
.rev{opacity:0;transform:translateY(26px) scale(.98);transition:opacity .9s ease,transform .9s var(--curva)}
.rev.visto{opacity:1;transform:none}

@media(max-width:920px){
  .duo,.contacto .env,.objetivos .env{grid-template-columns:1fr}
  .duo .marco{aspect-ratio:4/3}
  .objetivos .foto{aspect-ratio:16/10;order:-1}
  .barra{position:sticky}
  .barra .env{height:70px;position:relative}
  .marca img{height:34px}
  .pie-rejilla{grid-template-columns:1fr;gap:2.2rem}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--linea);box-shadow:0 18px 30px rgba(18,50,74,.14);padding:.5rem 6vw 1.4rem}
  .barra.menu-abierto .nav{display:flex}
  .nav a{padding:.9rem 0;border-bottom:1px solid var(--linea)}
  .nav .btn{margin-top:1.2rem;justify-content:center;border-bottom:none}
  .nav .redes{justify-content:center;padding:1rem 0}
  .menu-btn{display:block}
}
@media(prefers-reduced-motion:reduce){
  .rev{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .pie::before{animation:none}
  .red-icono{animation:none}
}