/* ============================================================
   CENTRO EVOLUCIÓN · centroevolucion.ai
   Sistema de diseño derivado del flyer oficial
   Paleta y reglas: Plan maestro del sitio web, Sección 8
   ============================================================ */

:root{
  --azul:#0D203D;        /* fondo dominante */
  --panel:#192E52;       /* tarjetas sobre azul */
  --dorado:#C4983F;      /* acento — máx. 3 apariciones por pantalla */
  --crema:#F6EDE3;       /* blanco de la marca */
  --pizarra:#8A97AA;     /* texto secundario sobre fondos oscuros */
  --tinta:#1A2130;       /* texto sobre claros */
  --dorado-texto:#7D601F;   /* dorado accesible sobre crema/blanco (5.2:1) */
  --pizarra-texto:#54626F;  /* gris accesible sobre crema/blanco (5.5:1) */
  --borde:rgba(246,237,227,.14);
  --borde-claro:rgba(26,33,48,.14);
  --ff-display:"Oswald","Arial Narrow",sans-serif;
  --ff-serif:"Playfair Display",Georgia,serif;
  --ff-body:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--ff-body);font-size:18px;line-height:1.65;
  color:var(--tinta);background:var(--crema);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
@media (max-width:640px){body{font-size:17px}}

img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--dorado);outline-offset:2px;border-radius:2px}

.container{width:min(1120px,92%);margin-inline:auto}
.container-narrow{width:min(820px,92%);margin-inline:auto}

/* ---------- tipografía ---------- */
h1,h2,h3,.display{font-family:var(--ff-display);font-weight:600;line-height:1.08;margin:0 0 .5em;letter-spacing:.01em}
.display{text-transform:uppercase}
h1.display{font-size:clamp(2.5rem,7vw,4.6rem)}
h2{font-size:clamp(1.7rem,4vw,2.6rem);text-transform:uppercase}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.gold{color:var(--dorado)}
.kicker{
  font-family:var(--ff-serif);font-style:italic;font-size:clamp(1.05rem,2.2vw,1.35rem);
  color:var(--crema);margin:0 0 1rem;
}
.section-cream .kicker,.on-light .kicker{color:var(--tinta)}
.eyebrow{
  font-family:var(--ff-body);font-size:.78rem;font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;color:var(--dorado);margin:0 0 1.2rem;
}
.lead{font-size:1.12rem}
.muted{color:var(--pizarra)}
/* accesibilidad: sobre fondos claros, dorado y gris usan su variante oscura */
.section-cream .eyebrow,.on-light .eyebrow,.card-light .eyebrow{color:var(--dorado-texto)}
.section-cream .muted,.on-light .muted,.card-light .muted{color:var(--pizarra-texto)}
.section-cream th{color:var(--dorado-texto)}
.section-cream .serif-note.muted{color:var(--pizarra-texto)}
.section-cream summary::after{color:var(--dorado-texto)}
.small{font-size:.9rem}
.serif-note{font-family:var(--ff-serif);font-style:italic}

/* ---------- secciones ---------- */
section{padding:clamp(3.2rem,8vw,5.5rem) 0;position:relative}
.section-dark{background:var(--azul);color:var(--crema)}
.section-dark .muted{color:var(--pizarra)}
.section-panelbg{background:var(--panel);color:var(--crema)}
.section-cream{background:var(--crema);color:var(--tinta)}
.section-tight{padding:clamp(2.2rem,5vw,3.2rem) 0}

/* marcas de escala del flyer — motivo de identidad */
.scale-marks{position:relative}
.scale-marks::before{
  content:"";position:absolute;top:8%;bottom:8%;left:clamp(8px,2vw,26px);width:14px;
  background-image:repeating-linear-gradient(to bottom,var(--borde) 0 2px,transparent 2px 26px);
  pointer-events:none;
}
.scale-marks::after{
  content:"";position:absolute;top:8%;left:clamp(8px,2vw,26px);width:22px;height:2px;
  background:var(--dorado);pointer-events:none;
}
@media (max-width:900px){.scale-marks::before,.scale-marks::after{display:none}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(13,32,61,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--borde);color:var(--crema);
}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:66px}
.brand{
  font-family:var(--ff-display);font-weight:600;text-transform:uppercase;letter-spacing:.14em;
  font-size:1.02rem;text-decoration:none;color:var(--crema);white-space:nowrap;
}
.brand span{color:var(--dorado)}
.main-nav{display:flex;align-items:center;gap:1.15rem;flex-wrap:wrap;justify-content:flex-end}
.main-nav a{
  text-decoration:none;font-size:.92rem;font-weight:500;color:var(--crema);
  opacity:.88;transition:opacity .15s;
}
.main-nav a:hover{opacity:1}
.main-nav a[aria-current="page"]:not(.btn){color:var(--dorado);opacity:1}
.main-nav a.btn-gold[aria-current="page"]{color:var(--azul)} /* el CTA nunca pierde su texto */
.nav-toggle{
  display:none;background:none;border:1px solid var(--borde);color:var(--crema);
  font:inherit;font-size:.9rem;padding:.4rem .9rem;border-radius:4px;cursor:pointer;
}
@media (max-width:1020px){
  .nav-toggle{display:block}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    align-items:stretch;background:var(--azul);border-bottom:1px solid var(--borde);
    padding:1rem 4%;gap:.9rem;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:.35rem 0;font-size:1rem}
}

/* ---------- botones ---------- */
.btn{
  display:inline-block;font-family:var(--ff-body);font-weight:600;font-size:.98rem;
  padding:.85rem 1.6rem;border-radius:5px;text-decoration:none;text-align:center;
  border:1px solid transparent;cursor:pointer;transition:transform .12s,box-shadow .12s;
  line-height:1.3;
}
.btn:hover{transform:translateY(-1px)}
.btn-gold{background:var(--dorado);color:var(--azul)}
.btn-gold:hover{box-shadow:0 6px 22px rgba(196,152,63,.35)}
.btn-ghost{background:transparent;color:var(--crema);border-color:rgba(246,237,227,.45)}
.btn-ghost:hover{border-color:var(--crema)}
.on-light .btn-ghost,.section-cream .btn-ghost{color:var(--tinta);border-color:rgba(26,33,48,.4)}
.btn-block{display:block;width:100%}
.nav-cta{padding:.55rem 1.1rem;font-size:.88rem}
.btn-wa{background:transparent;border:1px solid var(--borde-claro);color:inherit;font-weight:500}
.section-dark .btn-wa,.section-panelbg .btn-wa{border-color:var(--borde);color:var(--crema)}

/* ---------- hero ---------- */
.hero{padding:clamp(4rem,10vw,7rem) 0}
.hero .display .line{display:block}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2rem;align-items:center}
.microline{font-size:.88rem;color:var(--pizarra);margin-top:1.1rem}

/* ---------- franja de prueba (cifras) ---------- */
.stat-band{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
@media (max-width:760px){.stat-band{grid-template-columns:1fr;gap:1.4rem}}
.stat{border-left:3px solid var(--dorado);padding-left:1.1rem}
.stat .num{
  font-family:var(--ff-display);font-size:clamp(1.9rem,4vw,2.7rem);font-weight:600;
  text-transform:uppercase;color:var(--tinta);line-height:1.05;
}
.section-dark .stat .num{color:var(--crema)}
.stat .num em{font-style:normal;color:var(--dorado)}
.stat p{margin:.4rem 0 0;font-size:.95rem;color:inherit;opacity:.85}

/* ---------- tarjetas ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
@media (max-width:980px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{
  background:var(--panel);border:1px solid var(--borde);border-radius:8px;
  padding:1.6rem;color:var(--crema);
}
.card h3{margin-top:0}
.card-dolor{border-left:3px solid var(--dorado)}
.card-dolor h3{font-family:var(--ff-body);font-size:1.03rem;font-weight:700;text-transform:none;letter-spacing:0}
.card-dolor p{margin:0;font-size:.95rem;color:var(--pizarra)}

.card-light{
  background:#fff;border:1px solid var(--borde-claro);border-radius:8px;
  padding:1.6rem;color:var(--tinta);
}
.card-light h3{margin-top:0}

/* bifurcación de la home */
.fork{display:grid;grid-template-columns:1fr 1fr;gap:1.8rem}
@media (max-width:860px){.fork{grid-template-columns:1fr}}
.fork-card{
  background:var(--panel);border:1px solid var(--borde);border-radius:10px;
  padding:2.2rem;color:var(--crema);display:flex;flex-direction:column;gap:.6rem;
  text-decoration:none;transition:border-color .15s,transform .15s;
}
.fork-card:hover{border-color:var(--dorado);transform:translateY(-3px)}
.fork-card .eyebrow{margin-bottom:.4rem}
.fork-card h3{font-size:1.5rem;text-transform:none;font-family:var(--ff-body);font-weight:700}
.fork-card p{color:var(--pizarra);font-size:.98rem;margin:0}
.fork-card .go{margin-top:auto;padding-top:1rem;color:var(--dorado);font-weight:600}

/* caso de alumno */
.case-card{background:var(--panel);border:1px solid var(--borde);border-radius:8px;padding:1.5rem;color:var(--crema)}
.case-card .avatar{
  width:52px;height:52px;border-radius:50%;background:var(--azul);border:1px solid var(--dorado);
  display:flex;align-items:center;justify-content:center;font-family:var(--ff-display);
  font-size:1.15rem;color:var(--dorado);margin-bottom:1rem;
}
.case-card .cifra{font-family:var(--ff-display);font-size:1.5rem;color:var(--dorado);text-transform:uppercase;margin:.5rem 0 .3rem}
.case-card .giro{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--pizarra)}
.case-card p{font-size:.95rem;margin:.4rem 0 0;color:var(--crema)}
.case-card .detalle{font-family:var(--ff-serif);font-style:italic;color:var(--pizarra);font-size:.92rem;margin-top:.7rem}

/* ---------- cita ---------- */
blockquote{
  margin:1.6rem 0;padding:.4rem 0 .4rem 1.3rem;border-left:3px solid var(--dorado);
  font-family:var(--ff-serif);font-style:italic;font-size:1.15rem;line-height:1.55;
}
blockquote cite{display:block;font-family:var(--ff-body);font-style:normal;font-size:.85rem;margin-top:.6rem;color:var(--pizarra)}

/* ---------- tablas ---------- */
.table-wrap{overflow-x:auto;margin:1.5rem 0}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{padding:.85rem 1rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--borde-claro)}
.section-dark th,.section-dark td,.section-panelbg th,.section-panelbg td{border-color:var(--borde)}
th{font-family:var(--ff-body);font-weight:700;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dorado)}
tbody th{color:inherit;letter-spacing:0;text-transform:none;font-size:.95rem}

/* comparativa dos columnas */
.versus{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
@media (max-width:760px){.versus{grid-template-columns:1fr}}
.versus .col{border:1px solid var(--borde);border-radius:8px;padding:1.5rem}
.versus .col.win{border-color:var(--dorado)}
.versus .col h3{font-family:var(--ff-body);font-size:.85rem;letter-spacing:.15em;text-transform:uppercase;font-weight:700}
.versus .col.win h3{color:var(--dorado)}
.versus ul{margin:0;padding-left:1.1rem}
.versus li{margin-bottom:.6rem;font-size:.95rem}

/* ---------- listas con viñeta dorada ---------- */
.gold-list{list-style:none;margin:1.2rem 0;padding:0}
.gold-list li{position:relative;padding-left:1.5rem;margin-bottom:.85rem}
.gold-list li::before{content:"›";position:absolute;left:0;top:-.05em;color:var(--dorado);font-weight:700;font-size:1.1em}

/* pasos numerados */
.steps{counter-reset:paso;list-style:none;margin:1.5rem 0;padding:0;display:grid;gap:1.1rem}
.steps li{position:relative;padding-left:3.4rem}
.steps li::before{
  counter-increment:paso;content:counter(paso,decimal-leading-zero);
  position:absolute;left:0;top:.1rem;font-family:var(--ff-display);font-size:1.5rem;color:var(--dorado);
}
.steps li strong{display:block}

/* ---------- acordeón / FAQ ---------- */
details{
  border:1px solid var(--borde-claro);border-radius:6px;margin-bottom:.8rem;
  background:#fff;
}
.section-dark details,.section-panelbg details{background:var(--panel);border-color:var(--borde)}
summary{
  cursor:pointer;padding:1rem 1.2rem;font-weight:600;list-style:none;position:relative;
  padding-right:2.6rem;font-size:.98rem;
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"+";position:absolute;right:1.1rem;top:50%;transform:translateY(-50%);
  color:var(--dorado);font-size:1.3rem;font-weight:400;
}
details[open] summary::after{content:"–"}
details .answer{padding:0 1.2rem 1.1rem;font-size:.95rem}
details .answer p{margin-bottom:.6rem}

/* ---------- destacado ---------- */
.callout{
  border:1px solid var(--dorado);border-radius:8px;padding:1.6rem 1.8rem;margin:2rem 0;
  background:rgba(196,152,63,.06);
}
.callout .titulo{font-family:var(--ff-body);font-weight:700;font-size:.85rem;letter-spacing:.15em;text-transform:uppercase;color:var(--dorado);margin-bottom:.6rem}
.callout p:last-child{margin-bottom:0}

/* ---------- formularios ---------- */
form{display:grid;gap:1.1rem}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.35rem}
.field .why{font-weight:400;color:var(--pizarra);font-size:.8rem}
input[type=text],input[type=email],input[type=tel],select,textarea{
  width:100%;padding:.8rem .95rem;font:inherit;font-size:.98rem;border-radius:5px;
  border:1px solid rgba(26,33,48,.3);background:#fff;color:var(--tinta);
}
.section-dark input,.section-dark select,.section-dark textarea,
.section-panelbg input,.section-panelbg select,.section-panelbg textarea{
  background:var(--azul);border-color:var(--borde);color:var(--crema);
}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:3px solid var(--dorado);outline-offset:1px;border-color:var(--dorado)}
.check{display:flex;gap:.7rem;align-items:flex-start;font-size:.85rem}
.check input{width:1.1rem;height:1.1rem;margin-top:.2rem;flex:none}
.form-note{font-size:.82rem;color:var(--pizarra)}
fieldset{border:0;padding:0;margin:0}

/* ---------- footer ---------- */
.site-footer{background:var(--azul);color:var(--crema);padding:3.5rem 0 2rem;border-top:1px solid var(--borde)}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}
.footer-grid h4{font-family:var(--ff-body);font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dorado);margin:0 0 1rem}
.footer-grid ul{list-style:none;margin:0;padding:0}
.footer-grid li{margin-bottom:.55rem}
.footer-grid a{color:var(--crema);text-decoration:none;font-size:.92rem;opacity:.85}
.footer-grid a:hover{opacity:1;color:var(--dorado)}
.footer-legal{
  margin-top:2.5rem;padding-top:1.4rem;border-top:1px solid var(--borde);
  font-size:.8rem;color:var(--pizarra);display:flex;flex-wrap:wrap;gap:.4rem 1.4rem;
}
.footer-legal a{color:var(--pizarra)}

/* ---------- utilidades ---------- */
.center{text-align:center}
.mt-0{margin-top:0}.mt-1{margin-top:1rem}.mt-2{margin-top:2rem}.mt-3{margin-top:3rem}
.mb-0{margin-bottom:0}
.divider-gold{width:64px;height:3px;background:var(--dorado);border:0;margin:1.6rem 0}
.center .divider-gold{margin-inline:auto}
.badge{
  display:inline-block;background:var(--dorado);color:var(--azul);font-weight:700;
  font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;
  padding:.35rem .9rem;border-radius:999px;margin-bottom:1.2rem;
}
.event-box{
  background:var(--panel);border-left:4px solid var(--dorado);border-radius:8px;
  padding:1.6rem 1.8rem;color:var(--crema);
}
.event-box dt{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--pizarra);margin-top:.9rem}
.event-box dt:first-child{margin-top:0}
.event-box dd{margin:0;font-weight:600}
.wa-link{color:var(--dorado);text-decoration:none;font-weight:700}

/* reveal on scroll — solo se oculta si hay JS (html.js), para que el
   contenido nunca dependa de JavaScript para existir */
html.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
html.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.fork-card:hover{transform:none}
}

/* buscador del repertorio (Continuidad) */
.repertorio-buscador{margin:1.5rem 0}
.repertorio-lista{list-style:none;margin:1.2rem 0 0;padding:0;display:grid;gap:.7rem}
.repertorio-lista li{
  background:var(--panel);border:1px solid var(--borde);border-radius:6px;
  padding:1rem 1.2rem;font-size:.95rem;
}
.repertorio-lista .frase{font-family:var(--ff-serif);font-style:italic;display:block;color:var(--crema)}
.repertorio-lista .practica{color:var(--dorado);font-weight:600}
.repertorio-lista .trabaja{color:var(--pizarra);font-size:.85rem}
.repertorio-vacio{color:var(--pizarra);font-style:italic;display:none}

/* barra de progreso de lectura (solo páginas largas) */
.progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--dorado);width:0;z-index:80}

/* ============================================================
   EFECTOS · lenguaje visual adaptado del catálogo CanvasUI
   (Particle Object → polvo dorado · Decrypt Reveal → titular ·
   Ripple → botones · spotlight en tarjetas)
   ============================================================ */

/* lienzo del polvo dorado — detrás del contenido del hero */
.hero{overflow:hidden}
.hero-canvas{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero .container{position:relative;z-index:1}
/* resplandor ambiental que acompaña a las partículas
   (vive en el propio canvas para no pisar las marcas de escala) */
.con-polvo .hero-canvas{
  background:
    radial-gradient(52% 46% at 78% 18%, rgba(196,152,63,.10), transparent 70%),
    radial-gradient(40% 38% at 12% 86%, rgba(25,46,82,.85), transparent 72%);
}

/* botones dorados: brillo de barrido + onda al hacer clic (Ripple) */
.btn{position:relative;overflow:hidden}
.btn-gold::after{
  content:"";position:absolute;top:0;bottom:0;left:-70%;width:45%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.34),transparent);
  transform:skewX(-18deg);transition:left .5s ease;pointer-events:none;
}
.btn-gold:hover::after{left:125%}
.ripple{
  position:absolute;border-radius:50%;pointer-events:none;
  background:rgba(13,32,61,.28);transform:scale(0);opacity:.8;
  animation:ce-ripple .55s ease-out forwards;
}
@keyframes ce-ripple{to{transform:scale(3);opacity:0}}

/* spotlight dorado que sigue al cursor en tarjetas clave */
.fork-card,.case-card{position:relative;overflow:hidden}
.fork-card::before,.case-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;
  background:radial-gradient(240px circle at var(--mx,50%) var(--my,40%),rgba(196,152,63,.13),transparent 62%);
  transition:opacity .25s ease;
}
.fork-card:hover::before,.case-card:hover::before{opacity:1}
.fork-card>*,.case-card>*{position:relative}

@media (prefers-reduced-motion:reduce){
  .hero-canvas,.hero.con-polvo::before{display:none}
  .btn-gold::after{display:none}
  .ripple{animation:none;display:none}
}

/* impresión */
@media print{
  .site-header,.site-footer,.nav-toggle,.progress-bar,.hero-canvas{display:none}
  body{background:#fff;color:#000}
}

/* ---------- marca v2 (logo de Codex) ---------- */
.brand-simbolo{display:block;height:46px;width:auto}
.footer-marca{margin:0 0 2rem}
.footer-marca img{height:72px;width:auto;display:block}