/* ============================================================
   Xulum V2 — Sistema de diseño (dark + light, violeta)
   Fuente única de tokens, tipografía, nav, footer y utilidades.
   ============================================================ */

:root{
  --bg:#0b0e1c; --bg-2:#0f1226;
  --surface:rgba(255,255,255,.04); --surface-2:rgba(255,255,255,.06);
  --line:rgba(150,130,255,.16); --line-2:rgba(150,130,255,.28);
  --accent:#6c63ff; --accent-2:#8b7bff; --cyan:#b4a4ff; --pink:#4a3fd4;
  --btn-a:#5b4ee6; --btn-b:#6d5cf0;
  --green:#34d399; --text:#eae8f7; --read:#e7e5f2; --muted:#a5a1c4; --muted-2:#78749b;
  --card:#141838; --card-2:#0e1124; --panel:#0c1020; --nav-bg:rgba(11,14,28,.72); --menu-bg:#161c36;
  --shadow:0 30px 80px rgba(0,0,0,.5); --shadow-card:0 12px 34px rgba(10,8,30,.35);
  --font-d:'Sora',system-ui,-apple-system,sans-serif;
  --font-b:'Manrope',system-ui,-apple-system,sans-serif;
  --font-m:'Space Mono',ui-monospace,monospace;
  --max:1160px; --gutter:clamp(20px,4vw,32px);
  --section-py:clamp(46px,5.5vw,76px); --radius:16px; --measure:66ch;
}
:root[data-theme="light"]{
  --bg:#f5f4fb; --bg-2:#eceaf6; --surface:#ffffff; --surface-2:#ffffff;
  --line:rgba(108,99,255,.16); --line-2:rgba(108,99,255,.30);
  --accent-2:#6a5cf0; --cyan:#7d5fe6; --text:#1b1830; --read:#25223a; --muted:#585372; --muted-2:#8b87a4;
  --card:#ffffff; --card-2:#f4f2fd; --panel:#ffffff; --nav-bg:rgba(255,255,255,.84); --menu-bg:#ffffff;
  --shadow:0 24px 60px rgba(90,70,190,.16); --shadow-card:0 12px 30px rgba(90,70,190,.10);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-b);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--font-d);font-weight:700;line-height:1.14;text-wrap:balance;margin:0}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section-py) 0;position:relative}
.eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:transparent;
  background:linear-gradient(90deg,var(--accent-2),var(--cyan));-webkit-background-clip:text;background-clip:text}
.grad{color:transparent;background:linear-gradient(100deg,var(--accent-2),var(--cyan));-webkit-background-clip:text;background-clip:text}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-d);font-weight:600;font-size:.95rem;
  padding:.8rem 1.4rem;border-radius:999px;cursor:pointer;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s;text-align:center}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.btn-primary{position:relative;overflow:hidden;background:linear-gradient(100deg,var(--btn-a),var(--btn-b));color:#fff;box-shadow:0 10px 26px rgba(76,63,196,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(76,63,196,.46)}
.btn-primary::after{content:"";position:absolute;top:0;left:-70%;width:45%;height:100%;transform:skewX(-20deg);pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);transition:left .6s}
.btn-primary:hover::after{left:130%}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:var(--surface)}
.btn-ghost:hover{border-color:var(--accent-2);transform:translateY(-2px)}
/* Blindaje de contraste: el color/decoración del botón no debe ser pisado por
   colores de enlace del contexto (.article-body a, .toc a, etc. = espec. 0,1,1).
   .btn.btn-primary/.btn.btn-ghost = 0,2,0 → gana siempre, en dark y light. */
a.btn{text-decoration:none}
.btn.btn-primary{color:#fff!important;text-decoration:none!important}
.btn.btn-ghost{color:var(--text);text-decoration:none}
/* Widget flotante de WhatsApp (late + globito con texto) */
#xwa{position:fixed;right:24px;bottom:24px;z-index:1200;font-family:var(--font-b,system-ui),system-ui,sans-serif}
#xwa-btn{position:relative;width:60px;height:60px;border:none;border-radius:50%;background:#25d366;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.22);transition:transform .2s ease,box-shadow .2s ease;margin-left:auto}
#xwa-btn:hover{transform:scale(1.06);box-shadow:0 8px 24px rgba(0,0,0,.28)}
#xwa-btn:active{transform:scale(.97)}
#xwa-btn:focus-visible{outline:3px solid rgba(37,211,102,.5);outline-offset:3px}
.xwa-ring{position:absolute;inset:0;border-radius:50%;background:#25d366;opacity:.55;animation:xwa-pulse 2.4s ease-out infinite;z-index:-1}
@keyframes xwa-pulse{0%{transform:scale(1);opacity:.55}70%{transform:scale(1.7);opacity:0}to{opacity:0}}
#xwa-bubble{position:absolute;right:0;bottom:74px;width:290px;max-width:calc(100vw - 40px);background:#fff;border-radius:16px;padding:16px 16px 14px;box-shadow:0 10px 30px rgba(0,0,0,.18);opacity:0;transform:translateY(12px) scale(.96);pointer-events:none;transform-origin:bottom right;transition:opacity .28s ease,transform .28s ease}
#xwa[data-open="true"] #xwa-bubble{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
#xwa-bubble::after{content:"";position:absolute;right:22px;bottom:-8px;width:16px;height:16px;background:#fff;transform:rotate(45deg);box-shadow:3px 3px 6px rgba(0,0,0,.05)}
.xwa-row{display:flex;gap:12px;align-items:flex-start}
.xwa-avatar{flex:0 0 44px;width:44px;height:44px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center}
.xwa-text{display:flex;flex-direction:column;gap:3px;font-size:14px;line-height:1.4;color:#3a3f45}
.xwa-text strong{font-size:15px;color:#1f2429}
.xwa-cta{margin-top:6px;font-size:13px;font-weight:600;color:#128c7e;cursor:pointer}
#xwa-close{position:absolute;top:8px;right:10px;border:none;background:none;font-size:20px;line-height:1;color:#b0b4b8;cursor:pointer;padding:2px 6px;border-radius:8px}
#xwa-close:hover{color:#6b7075;background:#f2f3f5}
@media(max-width:420px){#xwa{right:16px;bottom:16px}}
@media(prefers-reduced-motion:reduce){.xwa-ring{animation:none;display:none}#xwa-bubble{transition:opacity .15s ease}}
/* Intro descriptiva por sección — statement editorial (estilo agencia) */
.seo-intro{padding:clamp(26px,3.4vw,46px) 0 clamp(6px,1.2vw,14px)}
.seo-intro .wrap{position:relative;padding-top:clamp(26px,3.4vw,46px)}
.seo-intro .wrap::before{content:"";position:absolute;top:0;left:var(--gutter);right:var(--gutter);height:1px;background:var(--line)}
.seo-eyebrow{font-family:var(--font-m);font-size:.72rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;text-align:center;color:var(--accent-2);margin:0 0 clamp(18px,2.2vw,26px)}
.seo-lead{max-width:880px;margin:0 auto;text-align:center;color:var(--muted);font-family:var(--font-d);font-weight:500;font-size:clamp(1.1rem,1.4vw,1.34rem);line-height:1.5;letter-spacing:-.01em;text-wrap:pretty}
.seo-lead strong,.seo-lead b{color:var(--text);font-weight:700}
.seo-lead a{color:var(--text);text-decoration:none;border-bottom:2px solid var(--accent-2)}
.seo-lead a:hover{border-color:var(--cyan)}

/* Bloque de contenido SEO reutilizable (centrado, con links internos) */
.seo-block{margin:0 auto;text-align:center;border-top:1px solid var(--line);padding-top:clamp(28px,3.5vw,44px)}
.seo-block .eyebrow{display:inline-block;margin-bottom:.5rem}
.seo-block h2{font-size:clamp(1.6rem,3vw,2.15rem);letter-spacing:-.02em;line-height:1.15;margin:0 auto 1.1rem;max-width:22ch}
.seo-block p{color:var(--muted);font-size:1.04rem;line-height:1.75;margin:0 auto 1rem;max-width:70ch}
.seo-block p:last-child{margin-bottom:0}
.seo-block a{color:var(--accent-2);text-decoration:none;border-bottom:1px solid var(--line-2);transition:border-color .2s,color .2s}
.seo-block a:hover{color:var(--cyan);border-color:currentColor}
/* FAQ reutilizable (acordeón) */
.seo-faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.seo-faq details{border:1px solid var(--line);border-radius:14px;background:var(--surface);overflow:hidden}
.seo-faq details[open]{border-color:var(--line-2)}
.seo-faq summary{cursor:pointer;list-style:none;padding:1.05rem 1.3rem;font-family:var(--font-d);font-weight:600;font-size:1rem;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.seo-faq summary::-webkit-details-marker{display:none}
.seo-faq summary::after{content:"+";color:var(--accent-2);font-size:1.4rem}
.seo-faq details[open] summary::after{content:"–"}
.seo-faq details p{margin:0;padding:0 1.3rem 1.15rem;color:var(--muted);font-size:.93rem;line-height:1.65}
.seo-faq details a{color:var(--accent-2);text-decoration:none;border-bottom:1px solid var(--line-2)}
.seo-faq details a:hover{color:var(--cyan)}
/* CTA band: el fondo es oscuro en ambos temas → texto siempre claro (fix light) */
.cta-inner{color:#fff}
.cta-inner h2{color:#fff}
.cta-inner p{color:rgba(255,255,255,.82)!important}
.cta-inner .btn-ghost{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28)}
.cta-inner .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5)}

/* ── NAV ── */
.xnav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:var(--nav-bg);border-bottom:1px solid var(--line)}
.xnav .wrap{display:flex;align-items:center;justify-content:space-between;gap:clamp(1.4rem,2.6vw,2.6rem);height:66px}
.xnav__logo{height:36px;width:auto;display:block;filter:brightness(0) invert(1) drop-shadow(0 0 14px rgba(139,123,255,.5))}
[data-theme="light"] .xnav__logo{filter:none}
.xfoot .xnav__logo{height:32px}
.xnav__links{display:flex;gap:1.8rem;font-size:.9rem;color:var(--muted);font-weight:500}
.xnav__links a:hover,.xnav__links a[aria-current]{color:var(--text)}
.xnav__links .xdrop{position:relative;display:flex;align-items:center}
.xdrop__trigger{display:inline-flex;align-items:center;gap:.3rem;cursor:pointer}
.xdrop__trigger .chev{font-size:.62rem;transition:transform .25s}
.xdrop:hover .xdrop__trigger .chev,.xdrop:focus-within .xdrop__trigger .chev{transform:rotate(180deg)}
.xdrop__panel{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:540px;display:grid;grid-template-columns:1fr 1fr;gap:2px 16px;padding:16px;border-radius:16px;
  background:var(--menu-bg);border:1px solid var(--line-2);box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s;z-index:60}
.xdrop:hover .xdrop__panel,.xdrop:focus-within .xdrop__panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.xdrop__panel::before{content:"";position:absolute;left:0;right:0;top:-16px;height:16px}
.xdrop__panel--mini{min-width:210px;grid-template-columns:1fr;gap:2px}
.xdrop__panel a{display:flex;align-items:center;gap:.55rem;padding:.55rem .7rem;border-radius:10px;font-size:.88rem;font-weight:500;color:var(--muted);border-bottom:0}
.xdrop__panel a:hover{color:var(--text);background:var(--surface-2)}
.xdrop__panel a .di{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:.9rem;background:linear-gradient(135deg,rgba(108,99,255,.28),rgba(180,164,255,.14));border:1px solid var(--line);flex-shrink:0}
/* mega-menú: servicios + segmentos */
.xdrop__panel.xmega{left:0;transform:translateX(0) translateY(8px);min-width:min(780px,94vw);grid-template-columns:1.35fr 1fr;gap:0;padding:0;overflow:hidden}
.xmega__profs{display:grid;grid-template-columns:1fr 1fr;gap:0 6px}
.xmega__profs a{padding:.42rem .55rem;font-size:.84rem}
.xmega__profs a .di{width:22px;height:22px;font-size:.8rem}
.xmpanel a.sub3.mlabel{color:var(--muted-2);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;pointer-events:none;padding-top:.7rem;padding-bottom:.2rem}
.xdrop:hover .xdrop__panel.xmega,.xdrop:focus-within .xdrop__panel.xmega{transform:translateX(0) translateY(0)}
.xmega__col{padding:18px}
.xmega__seg{background:linear-gradient(180deg,rgba(108,99,255,.1),transparent);border-left:1px solid var(--line);display:flex;flex-direction:column}
.xmega__lbl{font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);font-weight:700;margin:0 0 8px .7rem}
.xmega__grid{display:grid;grid-template-columns:1fr 1fr;gap:2px 12px}
/* mobile: Diseño Web anidado */
.xmpanel .xmacc--sub{border-bottom:1px solid var(--line)}
.xmpanel .xmacc--sub>summary{border-bottom:0}
.xmpanel a.sub3{padding-left:26px;font-size:.88rem;color:var(--muted-2);border-bottom:0}
.xmpanel .xmacc--sub a.sub3:last-child{color:var(--accent-2)}
.xnav__right{display:flex;align-items:center;gap:.6rem}
.xlang{display:flex;border:1px solid var(--line-2);border-radius:999px;overflow:hidden;font-family:var(--font-d);font-size:.76rem;font-weight:700}
.xlang a{padding:.34rem .72rem;color:var(--muted);min-height:32px;display:flex;align-items:center}
.xlang a[aria-current]{color:#fff;background:linear-gradient(100deg,var(--accent),var(--accent-2))}
.xtoggle{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-2);background:var(--surface);color:var(--text);cursor:pointer;font-size:1.02rem;display:grid;place-items:center;transition:.2s}
.xtoggle:hover{border-color:var(--accent-2);transform:translateY(-1px)}
.xsearch{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-2);background:var(--surface);color:var(--text);cursor:pointer;display:grid;place-items:center;transition:.2s}
.xsearch:hover{border-color:var(--accent-2);transform:translateY(-1px)}
/* ── Buscador global (modal) ── */
.xsm{position:fixed;inset:0;z-index:120;display:none;align-items:flex-start;justify-content:center;padding:14vh 20px 20px}
.xsm:not([hidden]){display:flex}
.xsm-backdrop{position:absolute;inset:0;background:rgba(6,4,16,.72);backdrop-filter:blur(4px)}
.xsm-dialog{position:relative;width:100%;max-width:600px;background:var(--panel);border:1px solid var(--line-2);border-radius:18px;box-shadow:0 40px 90px rgba(0,0,0,.55);overflow:hidden;animation:xsmin .22s ease}
@keyframes xsmin{from{opacity:0;transform:translateY(-10px)}}
.xsm-inp{display:flex;align-items:center;gap:.7rem;padding:16px 18px;border-bottom:1px solid var(--line)}
.xsm-inp svg{color:var(--muted);flex-shrink:0}
.xsm-inp input{flex:1;background:none;border:0;outline:none;color:var(--text);font-family:var(--font-b);font-size:1.05rem}
.xsm-inp input::placeholder{color:var(--muted-2)}
.xsm-close{width:30px;height:30px;border-radius:8px;border:1px solid var(--line-2);background:var(--surface);color:var(--muted);cursor:pointer;flex-shrink:0}
.xsm-close:hover{color:var(--text);border-color:var(--accent-2)}
.xsm-results{max-height:min(56vh,460px);overflow-y:auto;padding:6px}
.xsm-group-h{font-family:var(--font-d);font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);padding:12px 12px 6px}
.xsm-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:.7rem .8rem;border-radius:10px;color:var(--text);text-decoration:none;font-size:.94rem}
.xsm-item:hover,.xsm-item.active{background:var(--surface-2)}
.xsm-item mark{background:transparent;color:var(--accent-2);font-weight:700}
.xsm-item .xsm-tag{font-size:.68rem;color:var(--muted-2);border:1px solid var(--line);border-radius:999px;padding:.12rem .5rem;flex-shrink:0}
.xsm-hint,.xsm-empty{color:var(--muted-2);font-size:.85rem;text-align:center;padding:22px 16px}
.xburger{display:none;width:42px;height:42px;border-radius:50%;border:1px solid var(--line-2);background:var(--surface);cursor:pointer;position:relative}
.xburger span{position:absolute;left:11px;width:20px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.xburger span:nth-child(1){top:15px}.xburger span:nth-child(2){top:20px}.xburger span:nth-child(3){top:25px}
body.xmopen .xburger span:nth-child(1){top:20px;transform:rotate(45deg)}
body.xmopen .xburger span:nth-child(2){opacity:0}
body.xmopen .xburger span:nth-child(3){top:20px;transform:rotate(-45deg)}
@media(max-width:900px){.xnav__links,.xnav__right .btn{display:none}.xburger{display:block}}

/* Panel mobile */
.xmpanel{position:fixed;inset:0 0 0 auto;width:min(400px,92vw);z-index:60;background:var(--menu-bg);
  border-left:1px solid var(--line-2);box-shadow:var(--shadow);transform:translateX(105%);transition:transform .4s cubic-bezier(.3,.8,.3,1);
  padding:74px 22px 24px;overflow-y:auto;visibility:hidden}
body.xmopen .xmpanel{transform:none;visibility:visible}
.xmpanel a{display:block;padding:.72rem 0;font-family:var(--font-d);font-weight:600;color:var(--text);border-bottom:1px solid var(--line)}
.xmpanel a.sub{font-weight:500;color:var(--muted);padding-left:14px;font-size:.92rem}
.xmpanel__foot{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.xmpanel__foot .row{display:flex;align-items:center;justify-content:space-between}
.xmpanel__foot .btn{width:100%;justify-content:center;font-size:.88rem;padding:.68rem 1rem}
.xmoverlay{position:fixed;inset:0;z-index:55;background:rgba(4,4,12,.6);opacity:0;visibility:hidden;transition:.3s}
body.xmopen .xmoverlay{opacity:1;visibility:visible}
.xmclose{position:absolute;top:16px;right:18px;background:none;border:0;color:var(--text);font-size:1.5rem;cursor:pointer}

/* ── FOOTER ── */
.xfoot{border-top:1px solid var(--line);padding:44px 0;color:var(--muted-2);font-size:.88rem;margin-top:20px}
.xfoot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:30px}
@media(max-width:820px){.xfoot .cols{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.xfoot .cols{grid-template-columns:1fr}}
.xfoot h4{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text);margin-bottom:1rem}
.xfoot a{display:block;color:var(--muted);padding:.25rem 0}
.xfoot a:hover{color:var(--text)}
.xfoot .brand p{max-width:34ch;margin:.8rem 0 0}
.xfoot .bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

/* ── Utilidades de movimiento (globales) ── */
@media(prefers-reduced-motion:no-preference){
  html.js-anim .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .8s cubic-bezier(.2,.75,.2,1)}
  html.js-anim .reveal.in{opacity:1;transform:none}
}
@media(prefers-reduced-motion:reduce){.xmpanel,.xmoverlay{transition:none}}