/* ============================================================
   ZYVON TECHNOLOGIES — base.css
   Tokens · Preloader · Nav · Hero · Secciones · Footer
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#04060F;
  --bg2:#02030A;
  --surface:#080C1A;
  --card:#0C1120;
  --card2:#101728;
  --blue:#2E8BFF;
  --blue2:#1A6DE0;
  --cyan:#00D4FF;
  --violet:#8B5CF6;
  --green:#10D9A0;
  --amber:#F59E0B;
  --red:#FF4D5E;
  --pink:#EC4899;
  --white:#FFFFFF;
  --silver:#C2D2EC;
  --offwhite:#E8EEF8;
  --muted:#5E6E99;
  --border:rgba(46,139,255,0.11);
  --border2:rgba(46,139,255,0.24);
  --font-head:'Rajdhani',sans-serif;
  --font-body:'Nunito',sans-serif;
  --font-mono:'JetBrains Mono','Consolas',monospace;
  --nav-h:74px;
  --ease:cubic-bezier(.22,1,.36,1);
}

html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  background:var(--bg);color:var(--offwhite);
  font-family:var(--font-body);font-size:16px;line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body.locked{overflow:hidden}

/* halo ambiental */
body::before{
  content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 60% at 12% 14%,rgba(46,139,255,0.10) 0%,transparent 62%),
    radial-gradient(ellipse 55% 55% at 88% 72%,rgba(139,92,246,0.085) 0%,transparent 62%),
    radial-gradient(ellipse 40% 40% at 50% 100%,rgba(0,212,255,0.05) 0%,transparent 65%);
}
/* rejilla técnica global */
body::after{
  content:'';position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(46,139,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(46,139,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 80% at 50% 40%,#000,transparent 85%);
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 40%,#000,transparent 85%);
}

::selection{background:rgba(0,212,255,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05070F}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--blue),var(--violet));border-radius:8px}

a{color:inherit}
img{max-width:100%}

/* ══════════════ PROGRESO DE SCROLL ══════════════ */
#sprog{position:fixed;top:0;left:0;height:2px;width:100%;z-index:600;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--blue),var(--cyan),var(--violet));box-shadow:0 0 12px rgba(0,212,255,.6)}

/* ══════════════ NAV ══════════════ */
nav{
  position:fixed;top:0;left:0;right:0;z-index:500;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;padding:0 2.6rem;
  background:rgba(4,6,15,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:background .3s,border-color .3s;
}
nav.solid{background:rgba(4,6,15,.93);border-bottom-color:var(--border)}
.logo{display:flex;align-items:center;gap:.7rem;text-decoration:none;height:100%}
.logo img{height:34px;width:auto;object-fit:contain;filter:drop-shadow(0 0 14px rgba(46,139,255,.35))}
nav ul{list-style:none;display:flex;align-items:center;gap:.1rem}
nav ul li{position:relative}
nav ul>li>a{
  display:block;padding:.55rem 1rem;color:var(--silver);text-decoration:none;
  font-size:.86rem;font-weight:700;letter-spacing:.03em;border-radius:8px;
  transition:color .2s,background .2s;
}
nav ul>li>a:hover{color:var(--white);background:rgba(46,139,255,.08)}
.nav-cta{
  margin-left:.6rem;border:1px solid var(--border2);color:var(--cyan)!important;
  background:rgba(0,212,255,.06);border-radius:9px;position:relative;overflow:hidden;
}
.nav-cta:hover{background:rgba(0,212,255,.16)!important;color:var(--white)!important;box-shadow:0 0 22px rgba(0,212,255,.25)}

/* dropdown mega */
.has-dd::after{content:'';position:absolute;top:100%;left:0;right:0;height:14px}
.dd{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(-10px);
  width:min(700px,92vw);background:#060914;border:1px solid var(--border2);border-radius:16px;
  box-shadow:0 34px 80px rgba(0,0,0,.75);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease);
  padding:.55rem;z-index:520;
}
.has-dd:hover .dd{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.dd-grid{display:grid;grid-template-columns:1fr 1fr;gap:.25rem}
.dd-item{
  display:flex;gap:.8rem;align-items:flex-start;padding:.85rem .9rem;border-radius:11px;
  text-decoration:none;color:inherit;transition:background .2s,transform .2s;cursor:pointer;
}
.dd-item:hover{background:rgba(46,139,255,.09);transform:translateX(3px)}
.dd-item.full{grid-column:1/-1}
.dd-item.soon{opacity:.6}
.dd-ic{width:38px;height:38px;flex:0 0 auto;border-radius:10px;display:grid;place-items:center}
.dd-ic svg{width:20px;height:20px}
.dd-t{font-size:.86rem;font-weight:800;color:var(--white);margin-bottom:.12rem;display:flex;align-items:center;gap:.45rem}
.dd-d{display:block;font-size:.73rem;color:var(--muted);line-height:1.45}
.chip-new{font-size:.55rem;font-weight:800;letter-spacing:.1em;padding:.14rem .42rem;border-radius:4px;
  background:rgba(0,212,255,.14);color:var(--cyan);border:1px solid rgba(0,212,255,.35)}
.chip-soon{font-size:.55rem;font-weight:800;letter-spacing:.1em;padding:.14rem .42rem;border-radius:4px;
  background:rgba(245,158,11,.14);color:var(--amber);border:1px solid rgba(245,158,11,.35)}

/* hamburguesa + menú móvil */
.burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;background:none;border:0;cursor:pointer}
.burger span{display:block;width:25px;height:2.5px;background:var(--white);border-radius:2px;margin:0 auto;transition:.3s var(--ease)}
.burger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.mmenu{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:490;display:none;flex-direction:column;
  background:#04060F;border-bottom:1px solid var(--border);
  padding:1rem 1.5rem 1.6rem;max-height:calc(100vh - var(--nav-h));overflow-y:auto;
  transform:translateY(-14px);opacity:0;transition:.28s var(--ease);
}
.mmenu.open{display:flex;transform:none;opacity:1}
.mmenu a{color:var(--silver);text-decoration:none;font-weight:800;font-size:1rem;padding:.95rem .3rem;border-bottom:1px solid var(--border)}
.mmenu a:last-child{border:0}
.mmenu .mm-cta{margin-top:.9rem;border:1px solid var(--blue);color:var(--cyan);border-radius:10px;text-align:center}

/* ══════════════ HERO ══════════════ */
.hero{
  position:relative;z-index:1;min-height:100vh;display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);align-items:center;
  gap:2rem;padding:calc(var(--nav-h) + 3rem) 2.6rem 4rem;overflow:hidden;
}
.hero-fx{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero-orb{position:absolute;border-radius:50%}
.o1{right:6%;top:8%;width:520px;height:520px;background:radial-gradient(circle,rgba(46,139,255,.13),transparent 70%);animation:orb 9s ease-in-out infinite}
.o2{right:26%;bottom:6%;width:340px;height:340px;background:radial-gradient(circle,rgba(139,92,246,.12),transparent 70%);animation:orb 12s ease-in-out infinite reverse}
.o3{left:-6%;top:32%;width:280px;height:280px;background:radial-gradient(circle,rgba(0,212,255,.08),transparent 70%);animation:orb 8s ease-in-out 1.5s infinite}
@keyframes orb{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(0,-34px,0) scale(1.07)}}

.hero-left{position:relative;z-index:3;max-width:660px}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:.4rem 1rem;border-radius:100px;
  background:rgba(0,212,255,.06);border:1px solid rgba(0,212,255,.24);
  font-size:.7rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:var(--cyan);
  margin-bottom:1.9rem;
}
.bdot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:bdot 2s infinite}
@keyframes bdot{0%,100%{box-shadow:0 0 0 0 rgba(0,212,255,.5)}70%{box-shadow:0 0 0 8px rgba(0,212,255,0)}}

.hero h1{
  font-family:var(--font-head);font-weight:700;text-transform:uppercase;
  font-size:clamp(2.9rem,5.6vw,5.8rem);line-height:.94;letter-spacing:.015em;
  color:var(--white);margin-bottom:1.5rem;
}
.hero h1 .grad{
  background:linear-gradient(110deg,var(--blue) 0%,var(--cyan) 38%,var(--violet) 74%,var(--blue) 100%);
  background-size:260% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:gsh 6s ease-in-out infinite alternate;
}
@keyframes gsh{from{background-position:0% 50%}to{background-position:100% 50%}}
.hero h1 .ln{display:block;overflow:hidden}
.hero h1 .ln>span{display:block;transform:translateY(110%);transition:transform 1s var(--ease)}
body.ready .hero h1 .ln>span{transform:none}
.hero h1 .ln:nth-child(2)>span{transition-delay:.09s}
.hero h1 .ln:nth-child(3)>span{transition-delay:.18s}

.hero-sub{
  font-size:1.06rem;color:var(--silver);max-width:540px;line-height:1.75;margin-bottom:2.4rem;
  opacity:0;transform:translateY(16px);transition:.9s var(--ease) .42s;
}
body.ready .hero-sub{opacity:1;transform:none}
.hero-acts{display:flex;gap:.85rem;flex-wrap:wrap;opacity:0;transform:translateY(16px);transition:.9s var(--ease) .56s}
body.ready .hero-acts{opacity:1;transform:none}

.hero-right{position:relative;z-index:2;height:min(78vh,760px);min-height:420px}
/* La máscara radial evita que el brillo acumulado de las partículas
   dibuje el borde rectangular del canvas (parecía un reproductor de video). */
#brain{
  position:absolute;inset:0;width:100%;height:100%;display:block;
  -webkit-mask-image:radial-gradient(ellipse 62% 62% at 50% 50%,#000 58%,rgba(0,0,0,.35) 84%,transparent 100%);
  mask-image:radial-gradient(ellipse 62% 62% at 50% 50%,#000 58%,rgba(0,0,0,.35) 84%,transparent 100%);
}
@keyframes spin{to{transform:rotate(360deg)}}
.brain-cap{
  position:absolute;left:50%;bottom:2%;translate:-50% 0;text-align:center;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.22em;color:var(--muted);text-transform:uppercase;
  opacity:0;transition:opacity 1s ease 2.6s;pointer-events:none;
}
body.ready .brain-cap{opacity:1}
.brain-cap b{color:var(--cyan);font-weight:500}

.scroll-hint{
  position:absolute;left:50%;bottom:1.6rem;translate:-50% 0;z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:.5rem;
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.24em;color:var(--muted);text-transform:uppercase;
}
.scroll-hint i{display:block;width:1px;height:42px;background:linear-gradient(180deg,var(--cyan),transparent);animation:sl 2.1s ease-in-out infinite}
@keyframes sl{0%{opacity:0;transform:scaleY(0);transform-origin:top}45%{opacity:1;transform:scaleY(1);transform-origin:top}100%{opacity:0;transform:scaleY(1);transform-origin:bottom}}

/* ══════════════ BOTONES ══════════════ */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:.92rem 1.7rem;border-radius:11px;
  font-family:var(--font-body);font-size:.9rem;font-weight:800;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;border:1px solid transparent;position:relative;overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s,background .25s,color .25s,border-color .25s;
}
.btn svg{width:15px;height:15px;flex:0 0 auto}
.btn-p{background:linear-gradient(135deg,var(--blue2),var(--blue) 55%,var(--cyan));color:#04060F;box-shadow:0 10px 34px -10px rgba(46,139,255,.75)}
.btn-p:hover{transform:translateY(-3px);box-shadow:0 18px 48px -12px rgba(0,212,255,.8)}
.btn-p::after{content:'';position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.45),transparent 70%);transform:translateX(-130%)}
.btn-p:hover::after{animation:shine .85s var(--ease)}
@keyframes shine{to{transform:translateX(130%)}}
.btn-g{border-color:var(--border2);color:var(--silver);background:rgba(255,255,255,.015)}
.btn-g:hover{color:var(--white);border-color:rgba(0,212,255,.6);background:rgba(0,212,255,.07);transform:translateY(-3px)}
.btn-t{border-color:rgba(16,217,160,.42);color:var(--green);background:rgba(16,217,160,.05)}
.btn-t:hover{color:#04060F;background:var(--green);transform:translateY(-3px);box-shadow:0 14px 38px -12px rgba(16,217,160,.8)}
.btn-w{background:linear-gradient(135deg,#1FAB53,#25D366);color:#04060F}
.btn-w:hover{transform:translateY(-3px);box-shadow:0 16px 40px -12px rgba(37,211,102,.8)}

/* ══════════════ TICKER ══════════════ */
.ticker{
  position:relative;z-index:1;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:linear-gradient(90deg,rgba(46,139,255,.05),rgba(139,92,246,.05));
  overflow:hidden;padding:.9rem 0;
}
.ticker-track{display:flex;gap:3rem;width:max-content;animation:tick 34s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
@keyframes tick{to{transform:translateX(-50%)}}
.ticker span{
  display:inline-flex;align-items:center;gap:.7rem;white-space:nowrap;
  font-family:var(--font-head);font-size:.94rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--silver);
}
.ticker span::before{content:'';width:5px;height:5px;background:var(--cyan);border-radius:50%;box-shadow:0 0 10px var(--cyan)}

/* ══════════════ STATS ══════════════ */
.stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);
  border-bottom:1px solid var(--border);background:var(--surface)}
.stat{padding:2.4rem 2rem;text-align:center;border-right:1px solid var(--border);position:relative;overflow:hidden;transition:background .3s}
.stat:last-child{border-right:0}
.stat:hover{background:var(--card)}
.stat::after{content:'';position:absolute;left:50%;bottom:0;translate:-50% 0;width:0;height:2px;background:var(--cyan);transition:width .35s var(--ease)}
.stat:hover::after{width:70%}
.stat b{display:block;font-family:var(--font-head);font-size:2.7rem;font-weight:700;line-height:1;color:var(--blue)}
.stat small{display:block;margin-top:.45rem;font-size:.73rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--silver)}

/* ══════════════ SECCIONES ══════════════ */
section{position:relative;z-index:1;padding:7.5rem 2.6rem}
.sec-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.tag{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:.7rem;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);margin-bottom:1rem}
.tag::before{content:'';width:22px;height:1px;background:var(--cyan)}
h2.sec{font-family:var(--font-head);font-weight:700;text-transform:uppercase;letter-spacing:.03em;
  font-size:clamp(2rem,3.6vw,3.35rem);line-height:1.06;color:var(--white);margin-bottom:1.1rem}
.sec-desc{color:var(--silver);font-size:.98rem;line-height:1.78;max-width:560px}
.sec-head-c{text-align:center;max-width:760px;margin:0 auto}
.sec-head-c .tag{justify-content:center}
.sec-head-c .sec-desc{margin-inline:auto}

/* Las secciones con muchas animaciones se congelan mientras no están
   en pantalla: el navegador deja de componer esas capas y el scroll va fluido. */
.idle,.idle *,.idle *::before,.idle *::after{animation-play-state:paused!important}

/* reveal */
.rv{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}.rv-d4{transition-delay:.32s}

/* ══════════════ NOSOTROS ══════════════ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:4.5rem;align-items:center}
.term-box{background:var(--card);border:1px solid var(--border2);border-radius:14px;padding:1.6rem;position:relative;box-shadow:0 30px 70px -30px rgba(0,0,0,.9)}
.term-box::before{content:'ZYVON // DEPLOY';position:absolute;top:-.62rem;left:1.4rem;padding:0 .55rem;background:var(--card);
  font-family:var(--font-mono);font-size:.63rem;letter-spacing:.18em;color:var(--cyan)}
.term{font-family:var(--font-mono);font-size:.78rem;line-height:2}
.term .p{color:var(--blue);margin-right:.45rem}
.term .ok{color:var(--green)}
.term .o{color:#7A8BB0}
.cursor-blink{display:inline-block;width:8px;height:14px;background:var(--cyan);vertical-align:-2px;animation:blk 1s steps(2) infinite}
@keyframes blk{50%{opacity:0}}
.pillars{display:flex;flex-direction:column;gap:1.5rem;margin-top:2.2rem}
.pillar{display:flex;gap:1.2rem}
.pillar b{font-family:var(--font-mono);font-size:.72rem;color:var(--cyan);letter-spacing:.14em;padding-top:.2rem;min-width:26px}
.pillar h4{font-family:var(--font-head);font-size:1.05rem;text-transform:uppercase;letter-spacing:.04em;color:var(--white);margin-bottom:.25rem}
.pillar p{font-size:.86rem;color:var(--silver)}

/* ══════════════ SECTORES ══════════════ */
.sect-wrap{display:grid;grid-template-columns:1fr 2fr;gap:4.5rem;align-items:start}
.sect-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.sect-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:1.5rem;position:relative;overflow:hidden;transition:.3s var(--ease)}
.sect-card::before{content:'';position:absolute;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--cyan),var(--violet));transition:width .4s var(--ease)}
.sect-card:hover{transform:translateY(-5px);border-color:var(--border2);background:var(--card2)}
.sect-card:hover::before{width:100%}
.sect-card i{display:block;font-family:var(--font-mono);font-style:normal;font-size:.63rem;letter-spacing:.14em;color:var(--muted);margin-bottom:.7rem;transition:color .3s}
.sect-card:hover i{color:var(--cyan)}
.sect-card h3{font-family:var(--font-head);font-size:1.02rem;text-transform:uppercase;letter-spacing:.03em;color:var(--white);margin-bottom:.35rem;line-height:1.2}
.sect-card p{font-size:.79rem;color:var(--silver);line-height:1.6}

/* ══════════════ PROCESO ══════════════ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:4rem;position:relative}
.steps::before{content:'';position:absolute;top:9px;left:4%;right:4%;height:1px;background:linear-gradient(90deg,var(--blue),rgba(139,92,246,.5),transparent)}
.step{padding-right:2rem;position:relative}
.step .dot{width:18px;height:18px;border-radius:50%;background:var(--surface);border:1px solid var(--blue);display:grid;place-items:center;position:relative;z-index:2;margin-bottom:1.4rem}
.step .dot::after{content:'';width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.step em{display:block;font-family:var(--font-mono);font-style:normal;font-size:.63rem;letter-spacing:.16em;color:var(--cyan);margin-bottom:.5rem}
.step h3{font-family:var(--font-head);font-size:1.06rem;text-transform:uppercase;letter-spacing:.03em;color:var(--white);margin-bottom:.5rem}
.step p{font-size:.85rem;color:var(--silver);line-height:1.7}

/* ══════════════ CTA ══════════════ */
.cta{text-align:center;overflow:hidden}
.cta::before{content:'';position:absolute;left:50%;top:50%;translate:-50% -50%;width:760px;height:460px;
  background:radial-gradient(ellipse,rgba(46,139,255,.10),transparent 70%);pointer-events:none}
.cta h2{font-family:var(--font-head);font-size:clamp(2.1rem,4.2vw,3.6rem);font-weight:700;text-transform:uppercase;
  letter-spacing:.03em;color:var(--white);margin-bottom:1rem;position:relative}
.cta p{color:var(--silver);max-width:520px;margin:0 auto 2.6rem;position:relative}
.cta-acts{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;position:relative}

/* ══════════════ FOOTER ══════════════ */
footer{position:relative;z-index:1;display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:3rem;padding:4.5rem 2.6rem;border-top:1px solid var(--border)}
.f-brand img{height:32px;margin-bottom:1rem}
.f-brand p{font-size:.85rem;color:var(--muted);line-height:1.75;max-width:300px}
.f-col h4{font-family:var(--font-head);font-size:.82rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--white);margin-bottom:1.15rem}
.f-col ul{list-style:none}
.f-col li{margin-bottom:.6rem}
.f-col a{font-size:.84rem;color:var(--muted);text-decoration:none;transition:color .2s,padding-left .2s;display:inline-block}
.f-col a:hover{color:var(--cyan);padding-left:4px}
.socials{display:flex;gap:.55rem;margin-top:1.3rem;flex-wrap:wrap}
.soc{display:inline-flex;align-items:center;gap:.45rem;padding:.5rem .95rem;border-radius:9px;font-size:.79rem;font-weight:800;text-decoration:none;color:#fff;transition:.25s var(--ease)}
.soc:hover{transform:translateY(-3px) scale(1.03);filter:brightness(1.18)}
.soc svg{width:14px;height:14px}
.s-fb{background:linear-gradient(135deg,#1877F2,#0D5BD4)}
.s-ig{background:linear-gradient(135deg,#833AB4,#C13584,#E1306C,#F77737)}
.s-wa{background:linear-gradient(135deg,#1FAB53,#25D366)}
.f-bottom{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:1rem;
  padding:1.5rem 2.6rem;border-top:1px solid var(--border);flex-wrap:wrap}
.f-bottom p{font-size:.75rem;color:var(--muted)}
.f-badge{font-family:var(--font-mono);font-size:.67rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);
  background:rgba(0,212,255,.06);border:1px solid rgba(0,212,255,.24);padding:.34rem .8rem;border-radius:7px}

/* ══════════════ WHATSAPP FAB ══════════════ */
.wafab{position:fixed;right:22px;bottom:22px;z-index:800;text-decoration:none}
.wafab-btn{width:58px;height:58px;border-radius:50%;background:#25D366;display:grid;place-items:center;
  box-shadow:0 14px 34px -8px rgba(37,211,102,.6);transition:transform .22s var(--ease);position:relative}
.wafab-btn:hover{transform:scale(1.09)}
.wafab-btn svg{width:30px;height:30px}
.wafab-btn::before{content:'';position:absolute;inset:0;border-radius:50%;background:#25D366;opacity:.45;z-index:-1;animation:wap 2.3s ease-out infinite}
@keyframes wap{0%{transform:scale(1);opacity:.45}100%{transform:scale(1.9);opacity:0}}
.wafab-lbl{position:absolute;right:70px;top:50%;translate:0 -50%;background:var(--card);border:1px solid var(--border2);
  color:var(--white);font-size:.8rem;font-weight:800;padding:.6rem .9rem;border-radius:11px;white-space:nowrap;
  opacity:0;transform:translateX(10px);transition:.25s var(--ease);pointer-events:none}
.wafab-lbl small{display:block;font-size:.68rem;font-weight:600;color:var(--muted)}
.wafab:hover .wafab-lbl,.wafab-lbl.show{opacity:1;transform:none}
@media(max-width:640px){.wafab-lbl{display:none}}

/* ══════════════ RESPONSIVE ══════════════ */
@media(max-width:1180px){
  .hero{grid-template-columns:1fr;min-height:auto;padding-top:calc(var(--nav-h) + 2.4rem)}
  .hero-left{max-width:none;text-align:left}
  .hero-right{height:min(58vh,520px);order:2;margin-top:1rem}
  .sect-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  nav{padding:0 1.3rem}
  nav ul{display:none}
  .burger{display:flex}
  section{padding:5rem 1.3rem}
  /* en móvil el cerebro pasa a ser fondo de la mitad inferior del hero,
     así se ve de inmediato sin empujar el titular fuera de pantalla */
  .hero{display:block;min-height:94vh;padding:calc(var(--nav-h) + 2.2rem) 1.3rem 3rem}
  .hero-left{position:relative;z-index:3}
  .hero-right{position:absolute;left:0;right:0;bottom:0;height:58%;min-height:0;margin:0;opacity:.62;z-index:0;pointer-events:none}
  .brain-cap,.scroll-hint{display:none}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--border)}
  .split{grid-template-columns:1fr;gap:2.6rem}
  .sect-wrap{grid-template-columns:1fr;gap:2.4rem}
  .steps{grid-template-columns:1fr;gap:0}
  .steps::before{display:none}
  .step{padding:0 0 2.2rem 1.5rem;border-left:1px solid var(--border)}
  .step .dot{position:absolute;left:-9px;top:0}
  footer{grid-template-columns:1fr;gap:2.2rem;padding:3.2rem 1.3rem}
  .f-bottom{padding:1.4rem 1.3rem;justify-content:center;text-align:center}
}
@media(max-width:600px){
  .sect-grid{grid-template-columns:1fr}
  .hero h1{font-size:2.45rem}
  h2.sec{font-size:1.75rem}
  .stat b{font-size:2.1rem}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.15s!important}
  html{scroll-behavior:auto}
}