/* ============================================================
   vesper_course.css — hoja compartida por las páginas de detalle
   de curso/plan (curso-*.html, planes.html). Reutiliza el mismo
   lenguaje visual que la portada (index.html): navy + oro, Inria
   Serif en títulos, Inter en cuerpo. Autónoma: redeclara la paleta
   para no depender del orden de carga.
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;}
:root{
  --navy:#1B1B2F; --navy2:#222b47; --navy3:#141a2e;
  --gold:#c5a059; --gold-lt:#d9bd84; --gold2:#a8843d;
  --cream:#f5f2eb; --white:#fff; --border:#e4e0d8; --text:#1B1B2F;
  --muted:#5a6b7d; --eyebrow:#7c5e22; --tag:#6f541d;
  --t-eyebrow:.72rem; --t-small:.82rem; --t-body:.95rem; --t-body-lg:1.05rem;
  --t-h3:1.15rem; --t-h2:2.15rem; --t-display:clamp(2.1rem,4.4vw,2.9rem);
  --gutter:32px; --maxw:1080px;
  --r-sm:10px; --r-md:14px; --r-lg:18px; --r-pill:999px;
  --sh-md:0 14px 34px rgba(27,27,47,.12); --sh-lg:0 22px 50px rgba(27,27,47,.22);
  --ease-out:cubic-bezier(0.22,1,0.36,1); --ease-std:cubic-bezier(0.4,0,0.2,1);
}
html{scroll-behavior:smooth;}
body{font-family:'Inter',sans-serif;color:var(--text);margin:0;background:var(--white);line-height:1.6;font-size:1rem;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;}
h1,h2,h3,h4{line-height:1.2;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
section[id]{scroll-margin-top:96px;}
:focus-visible{outline:3px solid var(--gold2);outline-offset:2px;border-radius:6px;}
.on-dark :focus-visible,.chero :focus-visible,.cband :focus-visible,header :focus-visible,footer :focus-visible{outline-color:var(--gold-lt);}
.skip{position:absolute;left:-999px;top:8px;z-index:500;background:var(--gold);color:var(--navy);padding:10px 18px;border-radius:var(--r-sm);font-weight:600;}
.skip:focus{left:16px;}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.92rem;padding:13px 26px;border-radius:var(--r-sm);cursor:pointer;border:none;transition:transform .3s var(--ease-std),box-shadow .3s var(--ease-std),background .3s,border-color .3s,color .3s;font-family:inherit;}
.btn-gold{background:var(--gold);color:var(--navy);}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(197,160,89,.4);}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5);}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-lt);}
.btn-lg{font-size:1rem;padding:15px 32px;}

.eyebrow{display:inline-block;font-size:var(--t-eyebrow);letter-spacing:2px;text-transform:uppercase;color:var(--eyebrow);font-weight:700;}
.on-dark .eyebrow,.chero .eyebrow,.cband .eyebrow{color:var(--gold-lt);}
.sec-title{font-family:'Inria Serif',serif;font-size:var(--t-h2);font-weight:700;margin:12px 0 16px;line-height:1.14;}
.sec-lead{color:var(--muted);font-size:var(--t-body-lg);max-width:640px;}

/* NAV (idéntico a la portada) */
header{position:sticky;top:0;z-index:200;background:rgba(27,27,47,.96);backdrop-filter:blur(8px);border-bottom:1px solid rgba(197,160,89,.25);}
nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand img{height:42px;width:42px;object-fit:contain;}
.brand b{font-family:'Inria Serif',serif;color:#fff;font-size:1.15rem;font-weight:700;letter-spacing:.5px;}
.brand small{display:block;color:var(--gold);font-size:.6rem;letter-spacing:2px;text-transform:uppercase;}
.nav-links{display:flex;gap:30px;align-items:center;}
.nav-links a{color:rgba(255,255,255,.82);font-size:.88rem;font-weight:500;transition:color .16s;}
.nav-links a:hover{color:var(--gold-lt);}
.nav-cta{padding:9px 20px;}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.4rem;cursor:pointer;padding:6px 8px;}

/* HERO de curso */
.chero{position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(900px 400px at 82% -10%,rgba(197,160,89,.22),transparent 60%),linear-gradient(160deg,var(--navy2),var(--navy) 55%,var(--navy3));}
.chero-inner{padding:76px 0 72px;max-width:760px;}
.crumbs{font-size:.8rem;color:rgba(255,255,255,.6);margin-bottom:22px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.crumbs a{color:rgba(255,255,255,.72);}
.crumbs a:hover{color:var(--gold-lt);}
.crumbs i{font-size:.6rem;opacity:.5;}
.chero .ic{width:78px;height:78px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.9rem;color:var(--gold-lt);background:linear-gradient(135deg,var(--navy2),var(--navy3));border:2px solid rgba(197,160,89,.4);margin-bottom:22px;}
.chero h1{font-family:'Inria Serif',serif;font-size:var(--t-display);font-weight:700;margin:0 0 16px;}
.chero .lead{color:rgba(255,255,255,.85);font-size:1.12rem;max-width:600px;margin:0 0 26px;}
.chip{display:inline-block;padding:7px 16px;border-radius:var(--r-pill);background:var(--gold);color:var(--navy);font-weight:700;font-size:.82rem;letter-spacing:.5px;}
.chero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}

/* Secciones de contenido */
.sec{padding:76px 0;}
.sec.alt{background:var(--cream);}
.sec-head{max-width:640px;margin-bottom:44px;}
.prose{max-width:680px;color:var(--muted);font-size:var(--t-body-lg);}
.prose p{margin:0 0 18px;}
.prose strong{color:var(--text);}

/* Rejilla de rasgos */
.fgrid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.fcard{border:1px solid var(--border);border-radius:var(--r-lg);background:#fff;padding:30px 26px;transition:transform .4s var(--ease-std),box-shadow .4s,border-color .3s;}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--gold);}
.fcard .ic{width:52px;height:52px;border-radius:var(--r-md);background:linear-gradient(135deg,var(--navy2),var(--navy3));color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:18px;}
.fcard h3{font-size:1.06rem;margin:0 0 8px;}
.fcard p{color:var(--muted);font-size:var(--t-body);margin:0;}

/* Lista con checks */
.checks{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,1fr);gap:14px 30px;max-width:760px;}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:var(--t-body);color:var(--text);}
.checks li i{color:var(--gold2);margin-top:4px;}

/* Ruta de niveles (chips) */
.route{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;}
.route .step{flex:1;min-width:220px;border:1px solid var(--border);border-left:4px solid var(--gold);border-radius:var(--r-md);background:#fff;padding:20px 22px;}
.route .step b{display:block;font-family:'Inria Serif',serif;color:var(--navy);font-size:1.05rem;margin-bottom:4px;}
.route .step .lv{font-size:.72rem;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--tag);}
.route .step p{color:var(--muted);font-size:var(--t-small);margin:8px 0 0;}

/* Bloque de precio (planes.html) */
.priceblock{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:6px 0 4px;}
.priceblock .amt{font-family:'Inria Serif',serif;font-size:2.1rem;font-weight:700;color:var(--navy);}
.priceblock .unit{color:var(--muted);font-size:.9rem;}
.ribbon-inline{display:inline-block;background:var(--gold);color:var(--navy);font-size:.66rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;padding:5px 14px;border-radius:var(--r-pill);margin-bottom:12px;}

/* CTA band */
.cband{background:linear-gradient(160deg,var(--navy2),var(--navy3));color:#fff;text-align:center;padding:88px 0;}
.cband .sec-title{color:#fff;}
.cband p{color:rgba(255,255,255,.82);max-width:540px;margin:0 auto 28px;}

/* FOOTER (idéntico a la portada, reducido) */
footer{background:var(--navy3);color:rgba(255,255,255,.62);padding:56px 0 30px;}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:36px;}
.fgrid h5{color:#fff;font-size:.82rem;letter-spacing:1px;text-transform:uppercase;margin:0 0 16px;}
.fgrid a{display:block;color:rgba(255,255,255,.62);font-size:.88rem;margin-bottom:12px;transition:color .16s;}
.fgrid a:hover{color:var(--gold-lt);}
.fbrand img{height:46px;width:auto;margin-bottom:16px;}
.fbrand p{font-size:.88rem;max-width:280px;}
.fbottom{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem;}
.fbottom .social a{margin-left:16px;color:rgba(255,255,255,.62);font-size:1.1rem;}
.fbottom .social a:hover{color:var(--gold-lt);}

/* ===== BREAKPOINTS ===== */
@media(max-width:1024px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--navy);flex-direction:column;padding:20px 24px;gap:18px;border-bottom:1px solid rgba(197,160,89,.25);box-shadow:0 14px 30px rgba(0,0,0,.25);}
  .nav-links.show{display:flex;}
  .nav-links a{font-size:1rem;}
  .nav-toggle{display:block;}
}
@media(max-width:860px){
  .fgrid3{grid-template-columns:1fr;}
}
@media(max-width:680px){
  :root{--gutter:22px;}
  .chero-inner{padding:60px 0 56px;}
  .sec{padding:56px 0;}
  .checks{grid-template-columns:1fr;}
  .fgrid{grid-template-columns:1fr 1fr;gap:30px;}
  .chero-cta{flex-direction:column;align-items:stretch;}
  .chero-cta .btn{justify-content:center;}
}
@media(max-width:480px){
  .fgrid{grid-template-columns:1fr;}
}

/* ===== Animaciones (respetando reduce-motion) ===== */
@keyframes cRise{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:none;}}
html.js-anim .reveal{opacity:0;}
html.js-anim .reveal.in-view{opacity:1;animation:cRise .7s var(--ease-out) backwards;animation-delay:calc(var(--i,0)*70ms);}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  html.js-anim .reveal{opacity:1;}
  html.js-anim .reveal.in-view{animation:none;}
  *{transition:none!important;}
}