/* =========================================================
   NutriAcelera™ — sistema visual
   Azul marino profundo · azul claro · blanco
   ========================================================= */

:root{
  --ink:#071523;
  --ink-2:#0A1E31;
  --navy:#1A3B5C;
  --blue:#4A90E2;
  --sky:#5CC8FA;
  --ice:#AEE4FF;   /* azul claro: cursivas de acento, etiquetas */
  --white:#fff;

  --text:#EDF4FA;
  --muted:#9CB4C9;
  --faint:#67839B;

  --hair:rgba(255,255,255,.075);
  --hair-2:rgba(255,255,255,.14);
  --surface:rgba(255,255,255,.028);
  --surface-2:rgba(255,255,255,.05);

  --serif:"Instrument Serif",Georgia,serif;
  --sans:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --maxw:1080px;
  --ease:cubic-bezier(.22,.8,.3,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink);color:var(--text);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}

/* luz cenital + grano */
.bg{position:fixed;inset:0;z-index:0;pointer-events:none}
.bg::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 520px at 50% -80px, rgba(92,200,250,.16), transparent 68%),
    radial-gradient(620px 420px at 12% 18%, rgba(26,59,92,.55), transparent 70%),
    radial-gradient(700px 500px at 88% 72%, rgba(26,59,92,.42), transparent 72%);
}
.bg::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.05'/%3E%3C/svg%3E");
}
.page{position:relative;z-index:1}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:22px}
.center{text-align:center}

/* ---------- tipografía ---------- */
h1,h2,h3,h4{font-family:var(--sans);font-weight:700;margin:0;text-wrap:balance}
h1{font-size:clamp(27px,7.6vw,60px);line-height:1.06;letter-spacing:-.035em}
h2{font-size:clamp(26px,4.2vw,44px);line-height:1.09;letter-spacing:-.03em}
h3{font-size:19px;line-height:1.3;letter-spacing:-.015em}
h4{font-size:16px;line-height:1.35;letter-spacing:-.012em;font-weight:600}
p{margin:0}

em,.it{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:.005em}
h1 em,h2 em{font-size:1.06em;line-height:1.12;display:block;margin-top:.06em;color:var(--ice)}

.mark{
  white-space:nowrap;
  color:var(--sky);
  background:linear-gradient(transparent 86%, #fff 86%, #fff 95%, transparent 95%);
  padding-inline:.04em;
}

.eyebrow{font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--faint)}
.lead{color:var(--muted);font-size:17px;line-height:1.62;max-width:54ch;margin-inline:auto}

/* titular más compacto en las páginas del VSL */
.h1-vsl{font-size:clamp(24px,5.6vw,35px);line-height:1.14;max-width:30ch;margin-inline:auto}
.h1-vsl em{font-size:.82em;line-height:1.22;margin-top:.32em;color:var(--muted)}

.chip{
  display:inline-flex;align-items:center;gap:9px;
  border:1px solid var(--hair-2);border-radius:999px;padding:7px 16px;
  background:rgba(255,255,255,.035);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--sky);box-shadow:0 0 10px var(--sky)}

/* ---------- cabecera fija ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.nav.stuck{background:rgba(7,21,35,.72);backdrop-filter:blur(16px) saturate(140%);border-bottom-color:var(--hair)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.wordmark{font-weight:700;font-size:16.5px;letter-spacing:-.02em;color:var(--text);text-decoration:none}
.wordmark em{font-family:var(--serif);font-style:italic;font-weight:400;font-size:1.12em;letter-spacing:.01em}
.tm{font-size:.5em;vertical-align:super;line-height:0;color:var(--sky);font-weight:600;margin-left:1px}
.nav .btn{padding:10px 20px;font-size:14px}
@media(max-width:520px){.nav .btn{padding:9px 15px;font-size:13px}}
@media(max-width:430px){.h1-vsl .mark{white-space:normal}}

/* ---------- botones ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:0;border-radius:999px;cursor:pointer;text-decoration:none;
  font-family:var(--sans);font-weight:600;font-size:15.5px;letter-spacing:-.01em;
  padding:15px 32px;color:#04202F;
  background:var(--sky);
  box-shadow:0 10px 30px rgba(92,200,250,.22);
  transition:transform .2s var(--ease),box-shadow .25s var(--ease);
  overflow:hidden;
}
.btn::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 35%,rgba(255,255,255,.4) 50%,transparent 65%);
  transform:translateX(-120%);transition:transform .7s var(--ease);
}
.btn:hover{transform:translateY(-2px);background:var(--ice);box-shadow:0 16px 40px rgba(92,200,250,.32)}
.btn:hover::after{transform:translateX(120%)}
.btn:active{transform:translateY(0) scale(.985)}
.btn svg{position:relative;transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--hair-2);box-shadow:none}
.btn-ghost:hover{background:var(--surface-2);box-shadow:none;transform:translateY(-2px)}
.btn-ghost::after{display:none}

a{color:var(--sky);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--sky);outline-offset:3px;border-radius:8px}

/* ---------- estructura ---------- */
section{padding-block:clamp(58px,8.5vw,110px)}
.tight{padding-block:clamp(34px,5vw,58px)}
.stack{display:flex;flex-direction:column;align-items:center;gap:24px}
.hair{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,var(--hair-2),transparent)}

/* ---------- aparición ---------- */
.js [data-reveal]{opacity:0;transform:translateY(18px)}
.js [data-reveal].in{opacity:1;transform:none;transition:opacity .7s var(--ease),transform .7s var(--ease)}
@media(prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1!important;transform:none!important}
  *{animation:none!important}
}

/* ---------- tarjetas ---------- */
.card{
  background:var(--surface);border:1px solid var(--hair);border-radius:20px;padding:26px;
  transition:border-color .3s var(--ease),background .3s var(--ease),transform .3s var(--ease);
}
.card:hover{border-color:var(--hair-2);background:var(--surface-2);transform:translateY(-3px)}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr))}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
.ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  border:1px solid var(--hair-2);background:rgba(92,200,250,.08);color:var(--sky);margin-bottom:16px;
}
.ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6}

/* ---------- vídeo ---------- */
.video{
  position:relative;width:100%;max-width:840px;margin-inline:auto;aspect-ratio:16/9;
  border-radius:20px;overflow:hidden;border:1px solid var(--hair-2);
  background:linear-gradient(170deg,#0D2740,#061523);
  box-shadow:0 40px 90px rgba(0,0,0,.6),0 0 90px rgba(74,144,226,.12);
}
.video iframe,.video video{width:100%;height:100%;border:0;display:block}
.video .ph{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:16px;padding:20px;text-align:center}
.play{
  width:74px;height:74px;border-radius:50%;display:grid;place-items:center;
  background:var(--sky);
  animation:pulse 3.4s var(--ease) infinite;
}
.play svg{width:24px;height:24px;fill:#04202F;margin-left:4px}
@keyframes pulse{
  0%,100%{box-shadow:0 14px 44px rgba(74,144,226,.4),0 0 0 0 rgba(92,200,250,.28)}
  50%{box-shadow:0 14px 44px rgba(74,144,226,.5),0 0 0 18px rgba(92,200,250,0)}
}
.ph small{font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint)}

/* ---------- rueda de recursos ---------- */
.wheel-wrap{max-width:760px;margin-inline:auto}
.wheel{display:block;width:100%;height:auto;overflow:visible}
.wheel text{font-family:var(--sans)}
.w-ring{fill:none;stroke:rgba(92,200,250,.16);stroke-width:1.2;stroke-dasharray:2 8;stroke-linecap:round}
.w-spoke{stroke:rgba(92,200,250,.16);stroke-width:1.2;transition:stroke .35s var(--ease)}
.w-spoke.on{stroke:rgba(92,200,250,.6)}
.w-hub{fill:rgba(255,255,255,.028);stroke:var(--hair-2);stroke-width:1.2}
.w-hub-t{font-family:var(--mono)!important;font-size:10.5px;letter-spacing:.24em;fill:var(--faint)}
.w-hub-n{font-size:44px;font-weight:700;fill:var(--text);letter-spacing:-.03em}
.node{cursor:pointer}
.node .dot{fill:rgba(10,30,49,.92);stroke:var(--hair-2);stroke-width:1.4;transition:fill .35s var(--ease),stroke .35s var(--ease)}
.node .num{font-family:var(--mono)!important;font-size:13px;fill:var(--faint);transition:fill .35s var(--ease)}
.node .halo{fill:none;stroke:var(--sky);stroke-width:1.2;opacity:0;transition:opacity .4s var(--ease)}
.node:hover .dot{stroke:rgba(92,200,250,.55)}
.node.on .dot{fill:var(--sky);stroke:var(--sky)}
.node.on .num{fill:#04202F;font-weight:500}
.node.on .halo{opacity:.35}
.w-lab{font-size:14px;font-weight:500;fill:var(--faint);transition:fill .35s var(--ease);pointer-events:none}
.w-lab.on{fill:var(--text)}
@media(max-width:660px){.w-lab{display:none}}

.res-card{
  max-width:620px;margin:6px auto 0;text-align:left;
  border:1px solid var(--hair);border-radius:20px;padding:24px 26px;background:var(--surface);
  display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:start;min-height:158px;
}
.res-card .n{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--sky);
  border:1px solid var(--hair-2);border-radius:10px;padding:8px 10px;
}
.res-card h3{margin-bottom:6px}
.res-card .pill{color:var(--ice)!important;
  display:inline-block;margin-bottom:11px;
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--sky);border:1px solid rgba(92,200,250,.28);border-radius:999px;padding:4px 10px;
  background:rgba(92,200,250,.07);
}
.res-card p{color:var(--muted);font-size:15px}
.res-card .body{animation:swap .45s var(--ease)}
@keyframes swap{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media(max-width:520px){.res-card{grid-template-columns:1fr;gap:12px;padding:22px}.res-card .n{justify-self:start}}

/* ---------- formulario ---------- */
.form-card h2{font-size:clamp(21px,6vw,28px)!important}
.form-card{
  max-width:480px;margin-inline:auto;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--hair-2);border-radius:26px;padding:34px 30px;
  box-shadow:0 40px 90px rgba(0,0,0,.5);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.field label span{color:var(--sky)}
.field input{
  width:100%;padding:14px 15px;border-radius:12px;
  border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05);color:var(--text);
  font-family:var(--sans);font-size:15.5px;transition:border-color .25s var(--ease),background .25s var(--ease);
}
.field input::placeholder{color:var(--faint)}
.field input:focus{border-color:rgba(92,200,250,.55);background:rgba(255,255,255,.08);outline:none}
.consent{display:flex;gap:11px;align-items:flex-start;margin:20px 0 24px;font-size:12.5px;color:var(--muted)}
.consent input{margin-top:3px;width:17px;height:17px;accent-color:var(--sky);flex:0 0 auto}
.consent em{font-size:13.5px}

/* ---------- flecha ---------- */
.handoff{display:flex;flex-direction:column;align-items:center;gap:12px}
.handoff svg{color:var(--sky);animation:bob 2.6s var(--ease) infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(7px)}}
.handoff span{font-size:14.5px;color:var(--muted)}

/* ---------- banner superior (versión A) ---------- */
.topbar{border-bottom:1px solid var(--hair);background:rgba(92,200,250,.045)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px;flex-wrap:wrap}
.tb-left{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.tb-left .wordmark{font-size:15.5px;white-space:nowrap}
.topbar p{font-size:14px;color:var(--muted)}
.topbar strong{color:var(--text);font-weight:600}
.topbar .btn{padding:10px 20px;font-size:14px}

/* ---------- pasos ---------- */
.steps{counter-reset:s;display:grid;gap:12px;margin:0;padding:0;list-style:none}
.steps li{
  counter-increment:s;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
  border:1px solid var(--hair);border-radius:18px;padding:22px 24px;background:var(--surface);
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.steps li:hover{border-color:var(--hair-2);background:var(--surface-2)}
.steps li::before{
  content:counter(s,decimal-leading-zero);
  font-family:var(--mono);font-size:12px;color:var(--sky);letter-spacing:.1em;
  border:1px solid var(--hair-2);border-radius:10px;padding:8px 9px;
}
.steps h4{margin-bottom:4px}
.steps p{font-size:14.5px;color:var(--muted)}

/* ---------- comparativa antes / después ---------- */
.compare{
  border:1px solid var(--hair);border-radius:22px;padding:30px 28px;
  background:var(--surface);max-width:760px;margin-inline:auto;
}
.legend{display:flex;gap:22px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}
.legend span{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted)}
.legend i{width:11px;height:11px;border-radius:3px;flex:0 0 auto}
.legend i.before{background:#51708A}
.legend i.after{background:var(--sky)}

.metric+.metric{margin-top:26px;padding-top:24px;border-top:1px solid var(--hair)}
.metric h4{font-size:13px;font-weight:500;color:var(--faint);margin-bottom:14px;letter-spacing:.02em}
.track{display:grid;grid-template-columns:1fr 116px;gap:16px;align-items:center}
.track+.track{margin-top:9px}
.bar{height:24px;border-radius:5px;min-width:5px}
.js .bar{width:0!important;transition:width 1.1s var(--ease)}
.js .compare.in .bar{width:var(--w)!important}
.bar.before{background:#51708A}
.bar.after{background:var(--sky);box-shadow:0 0 26px rgba(92,200,250,.25)}
.val{font-family:var(--mono);font-size:14.5px;font-variant-numeric:tabular-nums;white-space:nowrap;color:var(--text)}
.val small{display:block;font-family:var(--sans);font-size:11.5px;color:var(--faint);margin-top:2px}
@media(max-width:520px){.track{grid-template-columns:1fr 96px;gap:11px}.val{font-size:13px}.compare{padding:24px 20px}}

/* ---------- pie ---------- */
footer{border-top:1px solid var(--hair);padding-block:38px;margin-top:20px}
footer .wordmark{font-size:17px}
footer nav{margin-top:14px;display:flex;gap:8px 24px;justify-content:center;flex-wrap:wrap}
footer nav a{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);text-decoration:none;transition:color .25s}
footer nav a:hover{color:var(--sky)}
footer small{display:block;margin-top:18px;color:var(--faint);font-size:12px}

/* ---------- menú de navegación interna (5 clics en el botón de la cabecera) ---------- */
/* Quitar este bloque y el de app.js antes de publicar la web de verdad. */
.devmenu{
  position:fixed;inset:0;z-index:100;display:none;
  align-items:center;justify-content:center;padding:22px;
  background:rgba(4,12,20,.72);backdrop-filter:blur(10px);
}
.devmenu.on{display:flex}
.devmenu .box{
  width:100%;max-width:420px;border-radius:22px;padding:26px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  border:1px solid var(--hair-2);box-shadow:0 40px 90px rgba(0,0,0,.6);
}
.devmenu h3{margin-bottom:4px}
.devmenu .sub{font-size:13px;color:var(--faint);margin-bottom:20px}
.devmenu a{
  display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--text);
  border:1px solid var(--hair);border-radius:14px;padding:13px 16px;margin-bottom:9px;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.devmenu a:hover{border-color:var(--hair-2);background:var(--surface-2)}
.devmenu a.here{border-color:rgba(92,200,250,.45);background:rgba(92,200,250,.07)}
.devmenu a b{font-size:14.5px;font-weight:600;display:block}
.devmenu a small{font-size:12px;color:var(--faint)}
.devmenu a i{
  font-family:var(--mono);font-style:normal;font-size:11px;color:var(--sky);
  border:1px solid var(--hair-2);border-radius:8px;padding:6px 8px;flex:0 0 auto;
}
.devmenu .close{
  width:100%;margin-top:14px;background:transparent;border:1px solid var(--hair-2);
  color:var(--muted);border-radius:12px;padding:11px;font:inherit;font-size:13.5px;cursor:pointer;
}
.devmenu .close:hover{background:var(--surface-2);color:var(--text)}

/* ---------- catálogo de la biblioteca ---------- */
.cat-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.filters{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:26px}
.filters button{
  font-family:var(--sans);font-size:13.5px;font-weight:500;color:var(--muted);
  background:transparent;border:1px solid var(--hair);border-radius:999px;
  padding:9px 16px;cursor:pointer;transition:all .25s var(--ease);
}
.filters button:hover{border-color:var(--hair-2);color:var(--text)}
.filters button.on{background:var(--sky);border-color:var(--sky);color:#04202F;font-weight:600}

.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(320px,100%),1fr));gap:20px}
.res{
  border:1px solid var(--hair);border-radius:20px;overflow:hidden;background:var(--surface);
  display:flex;flex-direction:column;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
  animation:swap .4s var(--ease);
}
.res:hover{border-color:var(--hair-2);transform:translateY(-3px)}
.res .cover{
  position:relative;aspect-ratio:16/9;display:grid;place-items:center;
  background:linear-gradient(145deg,#12324F,#08192A);border-bottom:1px solid var(--hair);
}
.res .cover .big{
  font-family:var(--sans);font-size:clamp(46px,9vw,66px);font-weight:700;
  color:rgba(255,255,255,.14);letter-spacing:-.04em;line-height:1;
}
.res .cover .pl{
  position:absolute;width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  background:var(--sky);box-shadow:0 10px 30px rgba(92,200,250,.35);
  transition:transform .25s var(--ease);
}
.res:hover .cover .pl{transform:scale(1.08)}
.res .cover .pl svg{width:19px;height:19px;fill:#04202F;margin-left:3px}
.res .cover .tag{color:var(--ice)!important;
  position:absolute;top:12px;left:12px;
  font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--sky);background:rgba(4,20,33,.75);border:1px solid rgba(92,200,250,.3);
  border-radius:999px;padding:5px 10px;
}
.res .body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.res .eyebrow{margin-bottom:2px}
.res h3{font-size:17px}
.res p{font-size:14px;color:var(--muted);flex:1}
.res .acts{display:flex;gap:9px;flex-wrap:wrap;margin-top:6px}
.res .acts a{
  flex:1 1 auto;text-align:center;text-decoration:none;font-size:13.5px;font-weight:600;
  border-radius:999px;padding:11px 14px;white-space:nowrap;
}
.res .acts .a1{background:var(--sky);color:#04202F}
.res .acts .a2{border:1px solid var(--hair-2);color:var(--text)}
.res .acts a:hover{filter:brightness(1.06)}
.res .acts .a2:hover{background:var(--surface-2)}

/* ---------- promesa destacada (biblioteca) ---------- */
.promesa{
  font-family:var(--sans);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(19px,2.5vw,25px);line-height:1.32;color:var(--text);
  max-width:31ch;margin-inline:auto;text-wrap:balance;
}
.promesa em{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--ice);font-size:1.06em}

/* ---------- aviso de marcadores ---------- */
.bmk-bar{border-bottom:1px solid var(--hair);background:rgba(92,200,250,.06)}
.bmk-bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-block:12px;flex-wrap:wrap}
.bmk-bar p{font-size:14px;color:var(--muted)}
.bmk-bar strong{color:var(--text);font-weight:600}
.bmk-bar .btn{padding:10px 20px;font-size:14px}
.bmk-hint{
  width:100%;font-size:13.5px;color:var(--ice);border-top:1px dashed var(--hair-2);
  padding-top:10px;margin-top:2px;
}
.bmk-hint[hidden]{display:none}