/* =========================================================
   Pley — Leer, Escribir y Programar
   Tema oscuro (por defecto) y claro, con animaciones.
   ========================================================= */

/* ---------- Fuentes (auto-alojadas, licencia OFL) ---------- */
@font-face{font-family:"Orbitron";src:url("../fonts/orbitron.woff") format("woff");font-weight:400 900;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("../fonts/jetbrainsmono.woff") format("woff");font-weight:100 800;font-display:swap}
@font-face{font-family:"Open Sans";src:url("../fonts/opensans.woff") format("woff");font-weight:300 800;font-display:swap}
@font-face{font-family:"Poppins";src:url("../fonts/poppins-400.woff") format("woff");font-weight:400;font-display:swap}
@font-face{font-family:"Poppins";src:url("../fonts/poppins-500.woff") format("woff");font-weight:500;font-display:swap}
@font-face{font-family:"Poppins";src:url("../fonts/poppins-600.woff") format("woff");font-weight:600;font-display:swap}
@font-face{font-family:"Poppins";src:url("../fonts/poppins-700.woff") format("woff");font-weight:700;font-display:swap}

/* ---------- Tokens de color ---------- */
:root,
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#120A24;--surface:#1C1236;--alt:#170E2E;
  --line:rgba(255,255,255,.1);--line2:rgba(255,255,255,.2);
  --head:#FFFFFF;--text:#ECE6FA;--body:#D3C9EC;--muted:#B7A9D6;
  --acc:#2EE6C9;--accInk:#04201C;--accText:#2EE6C9;
  --sec:#B98CFF;--secText:#C9A6FF;--pink:#FF6B9A;--pinkText:#FF8DB2;--yel:#FFD166;--yelText:#FFD166;
  --iconInk:#1A0B33;--trace:#2A1B4A;--glow:#2A1656;--ring:rgba(255,255,255,.18);
  --mini:rgba(28,18,54,.9);--soc:rgba(255,255,255,.1);--socInk:#FFFFFF;--field:#120A24;
  --yelTint:rgba(255,209,102,.1);--yelLine:rgba(255,209,102,.35);
  --pinkTint:rgba(255,107,154,.1);--pinkLine:rgba(255,107,154,.35);
  --accTint:rgba(46,230,201,.1);--accLine:rgba(46,230,201,.35);
  --cta:#B98CFF;--ctaInk:#1A0B33;--ctaBtn:#120A24;--ctaBtnInk:#FFFFFF;--shadow:rgba(185,140,255,.2);
  --logoBlock:#2EE6C9;--logoP:#04201C;--logoCur:#04201C;--logoWord:#FFFFFF;--logoTag:#B7A9D6;
}
:root[data-theme="light"]{
  color-scheme:light;
  --bg:#F6F8F5;--surface:#FFFFFF;--alt:#EAF1EC;
  --line:#DCE3DA;--line2:#B9C7BE;
  --head:#12201A;--text:#12201A;--body:#34423B;--muted:#4E5C55;
  --acc:#0B7A45;--accInk:#FFFFFF;--accText:#0B7A45;
  --sec:#C23B22;--secText:#C23B22;--pink:#E8553A;--pinkText:#C23B22;--yel:#F2B705;--yelText:#8A6500;
  --iconInk:#12201A;--trace:#D6E4DA;--glow:#DFF3E7;--ring:#B9C7BE;
  --mini:rgba(255,255,255,.94);--soc:#FFFFFF;--socInk:#12201A;--field:#F6F8F5;
  --yelTint:#FFF6D6;--yelLine:#F2D77A;--pinkTint:#FFE9E3;--pinkLine:#F5B6A6;--accTint:#E2F4EA;--accLine:#A6D9BD;
  --cta:#0B7A45;--ctaInk:#FFFFFF;--ctaBtn:#FFFFFF;--ctaBtnInk:#0B5A33;--shadow:rgba(11,122,69,.16);
  --logoBlock:#47417D;--logoP:#FFFFFF;--logoCur:#F2B705;--logoWord:#47417D;--logoTag:#4E5C55;
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font-family:"Open Sans",system-ui,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;transition:background-color .5s ease,color .5s ease;overflow-x:clip}
img,svg{max-width:100%}
a{color:var(--accText)}
h1,h2,h3{font-family:"Orbitron","Poppins",sans-serif;color:var(--head);line-height:1.2}
.container{max-width:1240px;margin:0 auto;padding-inline:24px}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:50;padding:10px 16px;border-radius:10px;background:var(--acc);color:var(--accInk);font-weight:600;text-decoration:none}
.skip:focus{top:12px}
:focus-visible{outline:3px solid var(--acc);outline-offset:3px}

/* ---------- Botones ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:14px 26px;border-radius:999px;border:0;font-family:"Poppins",sans-serif;font-weight:600;font-size:16px;text-decoration:none;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease}
.btn:hover{transform:translateY(-2px)}
.btn--acc{background:var(--acc);color:var(--accInk)}
.btn--inverse{background:var(--ctaBtn);color:var(--ctaBtnInk)}
.btn--sm{padding:10px 18px;font-size:15px}

/* ---------- Selector de modo ---------- */
.theme-toggle{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--line2);background:var(--surface);color:var(--head);font-family:"Poppins",sans-serif;font-size:14px;font-weight:600;cursor:pointer;transition:transform .25s}
.theme-toggle:hover{transform:rotate(-4deg) scale(1.04)}
.theme-toggle svg{transition:transform .5s ease}
.theme-toggle:hover svg{transform:rotate(40deg)}
.theme-toggle .i-moon{display:none}
:root[data-theme="light"] .theme-toggle .i-sun{display:none}
:root[data-theme="light"] .theme-toggle .i-moon{display:inline}
.theme-toggle--icon{width:44px;padding:0;justify-content:center}

/* ---------- Logo 2A ---------- */
.logo-svg .blk{fill:var(--logoBlock)}
.logo-svg .p{fill:var(--logoP);font-family:"Orbitron",sans-serif;font-weight:900}
.logo-svg .cur{fill:var(--logoCur);animation:blink 1s steps(1) infinite}
.logo-svg .word{fill:var(--logoWord);font-family:"Orbitron",sans-serif;font-weight:900}
.logo-svg .tag{fill:var(--logoTag);font-family:"JetBrains Mono",monospace;font-weight:500;letter-spacing:3px}
.logo-svg .snap{animation:snap 3.2s ease-in-out infinite}

/* ---------- Barra compacta ---------- */
.minibar{position:fixed;top:12px;left:0;right:0;z-index:40;padding-inline:12px;pointer-events:none;opacity:0;transform:translateY(-120%);transition:opacity .35s ease,transform .35s ease}
.minibar.is-shown{opacity:1;transform:none;pointer-events:auto}
.minibar__inner{max-width:1240px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px 16px;padding:6px 10px 6px 16px;border-radius:999px;background:var(--mini);border:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.minibar__brand{display:flex;align-items:center;min-height:44px}
.minibar__actions{display:flex;gap:8px;align-items:center}

/* ---------- Menú ---------- */
.nav{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 30px;font-family:"Poppins",sans-serif;font-weight:500;font-size:16px}
.nav a{position:relative;padding:8px 2px;color:var(--head);text-decoration:none}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--acc);transform:scaleX(0);transition:transform .3s}
.nav a:hover::after,.nav a[aria-current="true"]::after{transform:scaleX(1)}
.nav a.pill{padding:8px 18px;border-radius:999px;background:var(--acc);color:var(--accInk);font-weight:600}
.nav a.pill::after{display:none}
.nav--compact{gap:4px 22px;font-size:14px;justify-content:flex-start}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:max(860px,100svh);display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;background:radial-gradient(circle at 50% 45%,var(--glow),var(--bg) 65%);padding:70px 0 110px}
.hero__toggle{position:absolute;top:20px;right:24px;z-index:3}
.hero__circuit{position:absolute;inset:0;width:100%;height:100%}
.hero__circuit .base{fill:none;stroke:var(--trace);stroke-width:2}
.hero__circuit .live-a{fill:none;stroke:var(--acc);stroke-width:3;stroke-linecap:round}
.hero__circuit .live-b{fill:none;stroke:var(--sec);stroke-width:3;stroke-linecap:round}
.hero__circuit .nodes{fill:var(--pink)}
.hero__content{position:relative;z-index:2;padding:0 24px}
.hero__brand{position:relative;display:inline-block;--ringD:min(560px,88vw);--logoW:min(520px,80vw);padding-block:calc((var(--ringD) - var(--logoW)*0.31)/2)}
.hero__logo{position:relative;width:var(--logoW);height:auto;display:block;margin:0 auto}
.ring{position:absolute;left:50%;top:50%;width:var(--ringD);aspect-ratio:1;transform:translate(-50%,-50%);border:1px dashed var(--ring);border-radius:50%;animation:orbit 30s linear infinite;pointer-events:none}
.ring .ico{position:absolute;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;animation:counter 30s linear infinite}
.ring .ico--leer{top:-26px;left:calc(50% - 26px);background:var(--yel);color:var(--iconInk)}
.ring .ico--escribir{bottom:12%;left:2%;background:var(--pink);color:var(--iconInk)}
.ring .ico--programar{bottom:12%;right:2%;background:var(--acc);color:var(--accInk)}
.hero__title{margin:6px 0 0;line-height:1.9;font-weight:700;font-size:clamp(1.3rem,2.7vw,2.1rem)}
.hero__title .leer{color:var(--yelText)}
.hero__title .escribir{color:var(--pinkText)}
.hero__nav{margin-top:36px}
.socials{display:flex;justify-content:center;gap:12px;margin-top:28px}
.soc{width:44px;height:44px;border-radius:50%;background:var(--soc);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--socInk);transition:background .25s,transform .25s,color .25s}
.soc:hover{background:var(--acc);color:var(--accInk);transform:translateY(-3px)}
.ufo{position:absolute;left:4%;bottom:14%;width:210px;height:auto;z-index:1;animation:ufo 9s ease-in-out infinite}
.mouse{position:absolute;bottom:32px;left:50%;margin-left:-13px;width:26px;height:42px;border:2px solid var(--muted);border-radius:14px;display:flex;justify-content:center;padding-top:7px}
.mouse span{width:4px;height:8px;border-radius:2px;background:var(--acc);animation:wheel 1.6s ease-in infinite}

/* Efecto "Programar" en ola */
.wave{display:inline-flex;align-items:baseline;position:relative;padding:0 4px 14px;font-weight:900;white-space:nowrap}
.wave .c{display:inline-block;color:var(--accText);animation:wave 2.6s ease-in-out infinite,hue 6s linear infinite}
.wave .c:nth-of-type(2){animation-delay:.08s,.2s}.wave .c:nth-of-type(3){animation-delay:.16s,.4s}.wave .c:nth-of-type(4){animation-delay:.24s,.6s}
.wave .c:nth-of-type(5){animation-delay:.32s,.8s}.wave .c:nth-of-type(6){animation-delay:.4s,1s}.wave .c:nth-of-type(7){animation-delay:.48s,1.2s}
.wave .c:nth-of-type(8){animation-delay:.56s,1.4s}.wave .c:nth-of-type(9){animation-delay:.64s,1.6s}.wave .c:nth-of-type(10){animation-delay:.72s,1.8s}
.wave .br{display:inline-block;color:var(--muted);font-family:"JetBrains Mono",monospace;font-weight:500;animation:br 2.6s ease-in-out infinite}
.wave .br--l{--dx:-6px;margin-right:4px}.wave .br--r{--dx:6px;margin-left:4px}
.wave svg{position:absolute;left:0;right:0;bottom:0;width:100%;height:14px}
.wave svg path{fill:none;stroke:var(--acc);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:320;animation:draw 3.2s ease-in-out infinite}

/* ---------- Secciones ---------- */
.section{padding:96px 0}
.section--alt{background:var(--alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:860px;margin:0 auto 52px}
.kicker{margin:0;font-family:"Poppins",sans-serif;letter-spacing:3px;text-transform:uppercase;color:var(--muted);font-size:15px}
.sec-title{margin:6px 0 0;font-weight:700;font-size:clamp(1.9rem,3.4vw,2.7rem)}
.sec-lead{margin:18px 0 0;font-size:19px;color:var(--body)}
.accent{color:var(--accText)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease}
.card:hover{transform:translateY(-6px);border-color:var(--sec);box-shadow:0 0 0 1px var(--sec),0 20px 50px var(--shadow)}

/* Acerca */
.about{display:flex;flex-wrap:wrap;gap:40px;align-items:stretch}
.semaforo-card{flex:0 1 300px;padding:30px;display:flex;flex-direction:column;align-items:center;gap:18px}
.semaforo-card__title{margin:0;font-family:"Poppins",sans-serif;font-weight:600;color:var(--head)}
.semaforo{width:110px;padding:18px 0;border-radius:26px;background:#120A24;border:2px solid #34235E;display:flex;flex-direction:column;align-items:center;gap:16px}
.semaforo span{width:62px;height:62px;border-radius:50%}
.semaforo .r{animation:red 6s infinite}.semaforo .y{animation:yel 6s infinite}.semaforo .g{animation:grn 6s infinite}
.code-snip{margin:0;width:100%;padding:14px;border-radius:10px;background:#120A24;font-family:"JetBrains Mono",monospace;font-size:13px;line-height:1.6;color:#C8F5EC;white-space:pre-wrap}
.about__text{flex:1 1 520px;min-width:0}
.about__text h3{margin:0 0 8px;font-size:25px}
.about__q{margin:0 0 18px;font-style:italic;color:var(--accText);font-size:18px}
.about__text p{color:var(--body);line-height:1.8}
.trio{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-top:28px}
.trio div{padding:18px;border-radius:14px}
.trio p{margin:0}
.trio .t{font-family:"Orbitron",sans-serif;font-weight:700}
.trio .d{margin-top:4px;font-size:15px;color:var(--body)}
.trio .leer{background:var(--yelTint);border:1px solid var(--yelLine)}.trio .leer .t{color:var(--yelText)}
.trio .escribir{background:var(--pinkTint);border:1px solid var(--pinkLine)}.trio .escribir .t{color:var(--pinkText)}
.trio .programar{background:var(--accTint);border:1px solid var(--accLine)}.trio .programar .t{color:var(--accText)}

/* Misión con astronauta */
.mission{position:relative;overflow:hidden}
.mission__stars{position:absolute;inset:0;width:100%;height:100%;fill:var(--muted)}
.mission__stars circle{animation:twinkle 3s ease-in-out infinite}
.mission__stars circle:nth-child(2n){animation-delay:1s}.mission__stars circle:nth-child(3n){animation-delay:2s}
.mission__inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:30px;padding-block:60px}
.mission__text{flex:1 1 440px;min-width:0}
.mission__text .mono{margin:0 0 14px;color:var(--accText)}
.mission__title{margin:0;font-weight:900;font-size:clamp(1.9rem,4vw,3.2rem)}
.mission__text p.lead{margin:18px 0 28px;font-size:19px;color:var(--body)}
.mission__art{flex:1 1 380px;min-width:0;display:flex;justify-content:center}
.astro{width:100%;max-width:480px;height:auto;animation:float 6s ease-in-out infinite}

/* Evidencias */
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.evid{margin:0;padding:28px}
.evid .big{margin:0 0 12px;font-family:"Orbitron",sans-serif;font-weight:900;font-size:40px;color:var(--accText);line-height:1}
.evid svg{stroke:var(--secText);margin-bottom:12px}
.evid blockquote{margin:0 0 16px;line-height:1.7;color:var(--body)}
.evid figcaption{font-size:14px;color:var(--muted)}
.evid figcaption strong{color:var(--head)}

/* Objetivos */
.steps{position:relative}
.steps__line{position:absolute;left:8%;right:8%;top:32px;height:3px;background:var(--line)}
.steps__line span{display:block;height:100%;background:var(--acc);transform-origin:left;transform:scaleX(0);transition:transform 1.6s cubic-bezier(.2,.7,.2,1)}
.steps.is-visible .steps__line span{transform:scaleX(1)}
.steps ol{position:relative;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.steps li{text-align:center}
.steps .num{display:inline-flex;width:66px;height:66px;border-radius:50%;align-items:center;justify-content:center;font-family:"Orbitron",sans-serif;font-weight:900;font-size:22px;box-shadow:0 0 0 8px var(--alt)}
.steps .code{margin:18px 0 4px;font-family:"Orbitron",sans-serif;font-weight:700}
.steps .txt{margin:0;font-family:"Poppins",sans-serif;font-size:19px;color:var(--head)}
.steps li:nth-child(1) .num{background:var(--acc);color:var(--accInk)}.steps li:nth-child(1) .code{color:var(--accText)}
.steps li:nth-child(2) .num{background:var(--sec);color:var(--ctaInk)}.steps li:nth-child(2) .code{color:var(--secText)}
.steps li:nth-child(3) .num{background:var(--yel);color:var(--iconInk)}.steps li:nth-child(3) .code{color:var(--yelText)}

/* Ejes */
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:40px}
.chips span{padding:12px 22px;border-radius:999px;color:var(--head);font-family:"Poppins",sans-serif}
.chips .c1{background:var(--yelTint);border:1px solid var(--yelLine)}.chips .c2{background:var(--pinkTint);border:1px solid var(--pinkLine)}.chips .c3{background:var(--accTint);border:1px solid var(--accLine)}
.ejes{display:flex;flex-wrap:wrap;gap:24px;align-items:stretch}
.ejes__grid{flex:1 1 520px;min-width:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.eje{padding:26px}
.eje .lab{margin:14px 0 4px;font-size:13px;letter-spacing:2px;color:var(--muted)}
.eje .name{margin:0;font-family:"Poppins",sans-serif;font-weight:600;font-size:18px;color:var(--head)}
.eje svg{fill:none;stroke-width:2}
.arduino{flex:1 1 420px;min-width:0;margin:0;padding:22px;background:#071A10;border-color:#124D2C;display:flex;flex-direction:column;gap:12px}
.arduino figcaption{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:#FFFFFF;font-family:"Poppins",sans-serif;font-weight:600}
.arduino figcaption .mono{font-weight:500;font-size:13px;color:#6FBF93}
.arduino svg{width:100%;height:auto;display:block}
.arduino p{margin:0;color:#BFE3CF;font-size:15px}
.led{animation:led 1.2s ease-in-out infinite}.led:nth-child(2){animation-delay:.3s}.led:nth-child(3){animation-delay:.6s}.led:nth-child(4){animation-delay:.9s}
.trace{stroke-dasharray:40 360;animation:pulse 4s linear infinite}
.t2{animation-delay:-1.3s}.t3{animation-delay:-2.6s}.t4{animation-duration:5.5s}

/* Campus */
.campus{padding:48px;border-radius:24px;background:var(--cta);color:var(--ctaInk);display:flex;flex-wrap:wrap;gap:36px;align-items:center}
.campus__text{flex:1 1 380px;min-width:0}
.campus__text .k{margin:0 0 8px;font-family:"Poppins",sans-serif;letter-spacing:2px;font-size:14px;font-weight:600}
.campus__text h2{margin:0 0 12px;color:inherit;font-weight:900;font-size:clamp(1.7rem,3vw,2.4rem)}
.campus__text p.d{margin:0 0 26px;font-size:18px}
.terminal{flex:1 1 440px;min-width:0;position:relative;border-radius:14px;background:#0E0E14;border:1px solid #2A2A3A;overflow:hidden;box-shadow:0 30px 60px rgba(0,0,0,.35)}
.terminal__scan{position:absolute;inset:0;background:linear-gradient(transparent,rgba(46,230,201,.06),transparent);pointer-events:none;animation:scan 6s linear infinite}
.terminal__bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid #2A2A3A}
.terminal__bar i{width:12px;height:12px;border-radius:50%}
.terminal__bar span{margin-left:10px;font-family:"JetBrains Mono",monospace;font-size:13px;color:#8A8AA0}
.terminal__body{padding:20px 22px;font-family:"JetBrains Mono",monospace;font-size:15px;line-height:2;color:#D9F7F1;overflow-x:auto}
.terminal .ps{color:#2EE6C9}
.terminal .list{color:#B98CFF}
.ty{display:inline-block;overflow:hidden;white-space:nowrap;vertical-align:bottom;width:0}
.ok{opacity:0}
.terminal.is-visible .ty1{animation:type 1.4s steps(32) .3s forwards;--w:32ch}
.terminal.is-visible .ty2{animation:type 1.2s steps(26) 1.9s forwards;--w:26ch}
.terminal.is-visible .ty3{animation:type 1s steps(22) 3.3s forwards;--w:22ch}
.terminal.is-visible .ok2{animation:show .1s 3.2s forwards}
.terminal.is-visible .ok3{animation:show .1s 4.4s forwards}
.caret{animation:blink 1s steps(1) infinite}

/* Contacto */
.contact{display:flex;flex-wrap:wrap;gap:30px}
.contact__info{flex:1 1 340px;min-width:0}
.contact__info ul{list-style:none;margin:26px 0 0;padding:0;display:flex;flex-direction:column;gap:18px;font-size:17px}
.contact__info span{color:var(--muted)}
.contact__info strong{color:var(--head)}
.form{flex:1.4 1 440px;min-width:0;padding:32px;display:grid;gap:14px}
.form label{display:grid;gap:6px;color:var(--body)}
.form input,.form textarea{padding:12px 14px;min-height:44px;border-radius:10px;border:1px solid var(--line2);background:var(--field);color:var(--head);font:inherit}
.form .btn{justify-self:start}
.form__note{margin:0;font-size:14px;color:var(--muted)}

/* Pie */
.footer{border-top:1px solid var(--line);padding:28px 24px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:14px;color:var(--muted);font-size:14px}

/* ---------- Aparición al hacer scroll ---------- */
.js .rv{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.js .rv.is-visible{opacity:1;transform:none}
.up{animation:up .9s ease both}.u1{animation-delay:.2s}.u2{animation-delay:.4s}.u3{animation-delay:.6s}

/* ---------- Animaciones ---------- */
@keyframes pulse{to{stroke-dashoffset:-400}}
@keyframes orbit{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes counter{to{transform:rotate(-360deg)}}
@keyframes up{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
@keyframes red{0%,30%{background:#FF6B9A;box-shadow:0 0 30px #FF6B9A}33%,100%{background:#3A1630;box-shadow:none}}
@keyframes yel{0%,30%{background:#3A3122;box-shadow:none}33%,63%{background:#FFD166;box-shadow:0 0 30px #FFD166}66%,100%{background:#3A3122;box-shadow:none}}
@keyframes grn{0%,63%{background:#0F3A3A;box-shadow:none}66%,97%{background:#2EE6C9;box-shadow:0 0 30px #2EE6C9}100%{background:#0F3A3A}}
@keyframes blink{50%{opacity:0}}
@keyframes wheel{0%{transform:translateY(0);opacity:1}100%{transform:translateY(14px);opacity:0}}
@keyframes led{0%,100%{opacity:.25}50%{opacity:1}}
@keyframes type{from{width:0}to{width:var(--w)}}
@keyframes show{to{opacity:1}}
@keyframes scan{from{transform:translateY(-100%)}to{transform:translateY(100%)}}
@keyframes wave{0%,55%,100%{transform:translateY(0) scale(1)}18%{transform:translateY(-16px) scale(1.12)}36%{transform:translateY(3px) scale(.98)}}
@keyframes hue{0%,100%{color:var(--accText)}33%{color:var(--secText)}66%{color:var(--pinkText)}}
@keyframes br{0%,100%{opacity:.35;transform:translateX(0)}50%{opacity:1;transform:translateX(var(--dx))}}
@keyframes draw{0%{stroke-dashoffset:320}45%,75%{stroke-dashoffset:0}100%{stroke-dashoffset:-320}}
@keyframes snap{0%,70%,100%{transform:translateY(0)}80%{transform:translateY(-8px)}90%{transform:translateY(2px)}}
@keyframes float{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-22px) rotate(2deg)}}
@keyframes ufo{0%{transform:translate(0,0) rotate(-6deg)}25%{transform:translate(40px,-26px) rotate(3deg)}50%{transform:translate(80px,0) rotate(-3deg)}75%{transform:translate(40px,18px) rotate(5deg)}100%{transform:translate(0,0) rotate(-6deg)}}
@keyframes twinkle{0%,100%{opacity:.2}50%{opacity:1}}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .ufo{display:none}
  .minibar .nav--compact{display:none}
}
@media (max-width:640px){
  .section{padding:72px 0}
  .hero{padding-top:90px}
  .hero__toggle .label{display:none}
  .nav{gap:6px 18px;font-size:15px}
  .campus{padding:28px 20px}
  .ring .ico{width:42px;height:42px}
  .ring .ico--leer{top:-21px;left:calc(50% - 21px)}
  .terminal__body{font-size:13px}
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .ty{width:auto!important}.ok{opacity:1!important}
  .js .rv{opacity:1;transform:none}
}

/* =========================================================
   Celular: barra inferior tipo app, botón "volver arriba"
   y contenido centrado
   ========================================================= */
.appbar{display:none}
.to-top{position:fixed;right:18px;bottom:24px;z-index:45;width:56px;height:56px;border-radius:50%;border:0;background:var(--acc);color:var(--accInk);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 28px var(--shadow);opacity:0;transform:translateY(20px) scale(.8);pointer-events:none;transition:opacity .35s ease,transform .35s ease}
.to-top.is-shown{opacity:1;transform:none;pointer-events:auto}
.to-top svg{animation:tap 1.8s ease-in-out infinite}
.to-top:active{transform:scale(.92)}
@keyframes tap{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

@media (max-width:768px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .appbar{display:flex;position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:44;justify-content:space-around;align-items:flex-end;padding:8px 6px;border-radius:22px;background:var(--mini);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 10px 30px rgba(0,0,0,.25)}
  .appbar a{flex:1;min-width:0;min-height:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--muted);text-decoration:none;font-family:"Poppins",sans-serif;font-size:11px;font-weight:500;border-radius:14px;transition:color .25s,background .25s}
  .appbar a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .appbar a[aria-current="true"]{color:var(--accText);background:var(--accTint)}
  .appbar a.appbar__main{flex:0 0 auto;width:64px;height:64px;margin-top:-26px;border-radius:20px;background:var(--acc);color:var(--accInk);box-shadow:0 8px 20px var(--shadow)}
  .appbar a.appbar__main svg{width:26px;height:26px}
  .to-top{bottom:calc(96px + env(safe-area-inset-bottom));width:52px;height:52px}

  .hero__nav a:not(.pill){display:none}
  .mouse{display:none}
  .minibar .btn{display:none}

  .about,.contact,.mission__inner,.campus{text-align:center;justify-content:center}
  .semaforo-card{flex:1 1 100%}
  .about__text,.mission__text,.campus__text,.contact__info{flex-basis:100%}
  .trio div,.evid,.eje{text-align:center}
  .evid svg,.eje svg{margin-inline:auto;display:block}
  .chips{flex-direction:column;align-items:center}
  .form{text-align:left}
  .form .btn{justify-self:center}
  .form__note{text-align:center}
  .terminal{text-align:left}
  .terminal__body{font-size:11.5px;padding:16px}
  .terminal__body > div{white-space:nowrap}
  .arduino figcaption{justify-content:center;text-align:center}
  .arduino p{text-align:center}
}