:root{--ink:#06112b;--navy:#0a1f4d;--blue:#1668ff;--cyan:#18d5ff;--bg:#f3f7ff;--card:#fff;--txt:#17233f;--mut:#5a6a8a;--r:18px;--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--txt);background:var(--bg);line-height:1.55;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{width:min(1180px,92%);margin-inline:auto}.narrow{width:min(820px,92%)}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.progress{position:fixed;inset:0 0 auto;height:4px;z-index:100;background:linear-gradient(90deg,var(--cyan),var(--blue));transform-origin:0 50%;transform:scaleX(0)}
#snow{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:1;opacity:.55}

/* NAV */
.nav{position:fixed;inset:0 0 auto;z-index:90;display:flex;align-items:center;gap:18px;padding:10px 4%;transition:background .4s,padding .4s,box-shadow .4s;animation:drop .9s var(--ease) both}
.nav.solid{background:rgba(6,17,43,.88);backdrop-filter:blur(12px);padding-block:6px;box-shadow:0 8px 30px #0006}
.brand img{width:64px;height:56px;object-fit:contain;transition:transform .4s var(--ease)}.brand:hover img{transform:rotate(-6deg) scale(1.1)}
.nav nav{display:flex;gap:6px;margin-inline:auto}
.nav nav a{color:#fff;text-decoration:none;padding:8px 14px;border-radius:99px;font-weight:600;font-size:.95rem;position:relative;transition:background .3s}
.nav nav a:hover,.nav nav a.on{background:var(--blue)}
.burger{display:none;background:none;border:0;margin-left:auto;cursor:pointer;padding:8px}
.burger span{display:block;width:26px;height:3px;background:#fff;margin:5px 0;border-radius:3px;transition:.3s}
@keyframes drop{from{transform:translateY(-100%);opacity:0}}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:700;text-decoration:none;padding:10px 20px;border-radius:99px;color:#fff;position:relative;overflow:hidden;transition:transform .3s var(--ease),box-shadow .3s}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,#fff6 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s}
.btn:hover{transform:translateY(-3px) scale(1.03)}.btn:hover::after{transform:translateX(120%)}
.btn.wa{background:#18b85a;box-shadow:0 0 0 0 #18b85a88;animation:pulse 2.6s infinite}
.btn.solid{background:var(--blue);box-shadow:0 10px 26px #1668ff66}
.btn.ghost{background:#ffffff14;border:2px solid #ffffff55;backdrop-filter:blur(6px)}
.btn.big{padding:14px 26px;font-size:1.02rem}
@keyframes pulse{70%{box-shadow:0 0 0 16px #18b85a00}100%{box-shadow:0 0 0 0 #18b85a00}}

/* HERO */
.hero{position:relative;min-height:100svh;display:grid;align-items:center;color:#fff;background:var(--ink);overflow:hidden;padding:110px 0 70px}
.hero-bg{position:absolute;inset:-10% 0;background:url(assets/img/01_hero_refrigeracion.png) 78% 50%/cover;filter:saturate(1.1);animation:kb 22s ease-in-out infinite alternate;will-change:transform}
@keyframes kb{to{scale:1.12}}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,var(--ink) 8%,#06112bdd 38%,#06112b33 75%),linear-gradient(0deg,var(--bg) 0,transparent 14%)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:auto 1fr;gap:clamp(20px,4vw,60px);align-items:center}
.hero-logo{width:clamp(150px,22vw,300px);height:auto;filter:drop-shadow(0 0 30px #18d5ff88);animation:logoIn 1.4s var(--ease) .2s both,float 6s ease-in-out 1.6s infinite;position:relative}
@keyframes logoIn{from{opacity:0;transform:scale(.3) rotateY(90deg) translateZ(-200px)}}
@keyframes float{50%{transform:translateY(-14px) rotateZ(1.5deg)}}
h1{font-size:clamp(2.3rem,6vw,4.6rem);line-height:1.02;font-weight:900;letter-spacing:-.02em;text-transform:uppercase}
h1 .w{display:inline-block;overflow:hidden;vertical-align:bottom;margin-right:.25em}
h1 .w>span{display:inline-block;transform:translateY(110%) rotate(6deg);animation:up .9s var(--ease) forwards}
h1 .c{color:var(--cyan);text-shadow:0 0 30px #18d5ff77}
@keyframes up{to{transform:none}}
.lead{max-width:520px;margin:18px 0;color:#d6e4ff;font-size:1.1rem}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px;padding:0;margin-bottom:24px;color:#cfe3ff;font-weight:600}
.chips li::before{content:"✦ ";color:var(--cyan)}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.scroll-cue{position:absolute;bottom:26px;left:50%;width:26px;height:42px;border:2px solid #fff9;border-radius:20px;z-index:3}
.scroll-cue i{position:absolute;left:50%;top:8px;width:4px;height:8px;margin-left:-2px;border-radius:4px;background:var(--cyan);animation:wheel 1.6s infinite}
@keyframes wheel{to{transform:translateY(16px);opacity:0}}

/* REVEAL (scroll) */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--d,0s)}
.reveal.left{transform:translateX(-60px)}.reveal.right{transform:translateX(60px)}.reveal.zoom{transform:scale(.8)}
.reveal.in{opacity:1;transform:none}
.reveal.done{transition-delay:0s!important}
.card.reveal.done{transition:transform .25s,box-shadow .3s,border-color .3s}
.why-grid article.reveal.done{transition:transform .25s}

/* SECTIONS */
.sec{padding:90px 0;position:relative;z-index:2}.sec.alt{background:linear-gradient(180deg,#e7f0ff,#f3f7ff)}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:14px 40px;margin-bottom:34px}.sec-head p{max-width:440px;color:var(--mut)}
.title{font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.05;font-weight:900;text-transform:uppercase;color:var(--navy);position:relative;padding-bottom:12px;margin-bottom:6px}
.title b{color:var(--blue)}.title.light{color:#fff}.title.light b{color:var(--cyan)}.title.center{text-align:center}
.title::after{content:"";position:absolute;left:0;bottom:0;height:4px;width:0;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:4px;transition:width 1s var(--ease) .4s}
.title.center::after{left:50%;transform:translateX(-50%)}
.title.in::after,.in .title::after{width:72px}
.kicker{color:var(--cyan);font-weight:800;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem}

/* CAROUSEL */
.carousel{position:relative}
.track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:12px 4px 26px;scrollbar-width:none}
.track::-webkit-scrollbar{display:none}
.card{flex:0 0 clamp(210px,24vw,260px);scroll-snap-align:start;background:var(--card);border-radius:var(--r);box-shadow:0 12px 34px #1668ff22;overflow:hidden;text-align:left;border:2px solid transparent;cursor:pointer;font:inherit;color:inherit;padding:0;transition:box-shadow .3s,border-color .3s}
.card:hover,.card.on{border-color:var(--blue);box-shadow:0 18px 44px #1668ff55}
.card .ph{aspect-ratio:4/3;overflow:hidden;background:#dbe8ff}
.card img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}.card:hover img{transform:scale(1.14)}
.card h3{padding:14px 16px 2px;color:var(--navy);font-size:1.05rem}.card p{padding:0 16px 16px;color:var(--mut);font-size:.9rem}
.card.g{flex-basis:clamp(240px,28vw,330px);cursor:default}.card.g .ph{aspect-ratio:3/2}
.arrow{position:absolute;top:42%;width:46px;height:46px;border-radius:50%;border:0;background:var(--blue);color:#fff;font-size:26px;cursor:pointer;box-shadow:0 8px 20px #1668ff77;z-index:3;transition:transform .25s}
.arrow:hover{transform:scale(1.15)}.arrow.l{left:-14px}.arrow.r{right:-14px}
.detail{margin-top:10px;background:linear-gradient(120deg,var(--navy),#0b3aa0);color:#fff;border-radius:var(--r);padding:26px 30px;display:flex;flex-wrap:wrap;gap:16px 30px;align-items:center;justify-content:space-between}
.detail h3{font-size:1.4rem}.detail p{color:#cfe0ff;max-width:640px}.detail.pop{animation:pop .5s var(--ease)}
@keyframes pop{from{transform:scale(.96);opacity:.4}}

/* DIAG */
.diag{background:radial-gradient(900px 400px at 80% 0,#0b3aa0,transparent),var(--ink);color:#d6e4ff;padding:80px 0;position:relative;z-index:2}
.diag-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:34px;align-items:center}
.tiles{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.tile{background:#ffffff10;border:1px solid #ffffff2a;color:#fff;border-radius:16px;padding:18px 6px;font:inherit;font-weight:700;font-size:.85rem;cursor:pointer;transition:.3s var(--ease)}
.tile span{display:block;font-size:2rem;margin-bottom:6px;animation:bob 3s ease-in-out infinite}
.tile:nth-child(2) span{animation-delay:.3s}.tile:nth-child(3) span{animation-delay:.6s}.tile:nth-child(4) span{animation-delay:.9s}.tile:nth-child(5) span{animation-delay:1.2s}
@keyframes bob{50%{transform:translateY(-6px) scale(1.12)}}
.tile:hover,.tile.on{background:var(--blue);transform:translateY(-6px);box-shadow:0 14px 30px #1668ff88}
.diag-out{grid-column:1/-1;background:#ffffff0d;border-radius:var(--r);padding:0 24px;max-height:0;overflow:hidden;transition:max-height .6s var(--ease),padding .6s}
.diag-out.open{max-height:260px;padding:22px 24px}.diag-out .btn{margin-top:12px}

/* MAINT */
.maint{background:linear-gradient(110deg,#041030,#0b3aa0);color:#d6e4ff;padding:70px 0;position:relative;overflow:hidden;z-index:2}
.maint-grid{display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:30px;align-items:center}
.airflow{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;box-shadow:0 20px 50px #0008}
.airflow img{width:100%;height:100%;object-fit:cover}
.airflow svg{position:absolute;inset:auto 0 0;width:100%;height:60%;fill:none;stroke:var(--cyan);stroke-width:2;stroke-linecap:round;stroke-dasharray:40 30;animation:flow 2.4s linear infinite;filter:drop-shadow(0 0 6px var(--cyan))}
.airflow path:nth-child(2){animation:flow 3s linear infinite reverse}
@keyframes flow{to{stroke-dashoffset:-140}}
.benefits{list-style:none;padding:0;display:grid;gap:12px}
.benefits li{background:#ffffff12;border-radius:14px;padding:14px 18px;font-weight:700;color:#fff;display:flex;gap:12px;align-items:center;opacity:0;transform:translateX(40px);transition:.7s var(--ease);transition-delay:var(--d,0s)}
.benefits.in li{opacity:1;transform:none}

/* ABOUT / WHY */
.about{display:grid;grid-template-columns:1.2fr 1fr;gap:44px;align-items:center}
.about figure img{border-radius:var(--r);box-shadow:0 24px 60px #1668ff44;width:100%;aspect-ratio:4/3;object-fit:cover}
.mv{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0 8px}.mv article{background:#fff;padding:18px;border-radius:var(--r);box-shadow:0 8px 24px #1668ff1c}
.mv h3{color:var(--blue)}.note{color:var(--mut)}
.why{margin-top:80px}.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;margin-top:28px}
.why-grid article{background:#fff;padding:26px 20px;border-radius:var(--r);text-align:center;box-shadow:0 10px 30px #1668ff1c;transition:transform .4s var(--ease)}
.why-grid article:hover{transform:translateY(-8px)}.why-grid b{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 12px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;font-size:1.6rem}
.cards3{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-top:26px}
.cards3 article{background:#fff;padding:22px;border-radius:var(--r);box-shadow:0 10px 30px #1668ff1c;border:2px dashed #9db8ff}
.stars{color:#ffb400;letter-spacing:3px}.ph-tag{font-size:.75rem;font-weight:800;color:var(--blue);text-transform:uppercase}

/* CONTACT */
.contact{background:linear-gradient(120deg,#0b3aa0,#1668ff);padding:80px 0;position:relative;z-index:2;color:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:40px;align-items:center}
.contact figure img{border-radius:var(--r);box-shadow:0 24px 60px #0008}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form>h2,.form>p,.full{grid-column:1/-1}
.form label{font-weight:600;font-size:.85rem;display:grid;gap:4px}
input,select{font:inherit;padding:12px 14px;border-radius:12px;border:2px solid transparent;background:#fff;color:var(--txt)}
input:focus,select:focus{border-color:var(--cyan);outline:0}input.bad,select.bad{border-color:#ff5c7a}
.err{color:#ffd3da;font-weight:700;min-height:1.3em}

/* FAQ */
#faq details{background:#fff;border-radius:14px;margin-top:12px;box-shadow:0 6px 20px #1668ff1a;overflow:hidden}
#faq summary{padding:16px 20px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;color:var(--navy)}
#faq summary::after{content:"+";color:var(--blue);font-size:1.5rem;line-height:1;transition:transform .35s}
#faq details[open] summary::after{transform:rotate(135deg)}#faq details p{padding:0 20px 18px;color:var(--mut);animation:pop .4s var(--ease)}

/* FOOTER */
.footer{background:var(--ink);color:#b9c9ee;padding:50px 0 18px;position:relative;z-index:2}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:30px}.footer h3{color:#fff;margin-bottom:10px}.footer ul{list-style:none;padding:0;display:grid;gap:6px}.footer a{text-decoration:none}.footer a:hover{color:var(--cyan)}
.foot-bot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid #ffffff22;margin-top:30px;padding-top:16px;font-size:.9rem}
.made{background:#ffffff14;padding:6px 14px;border-radius:99px;color:#fff;font-weight:700}

/* CHAT */
.chat-fab{position:fixed;right:20px;bottom:20px;z-index:95;width:58px;height:58px;border-radius:50%;border:0;background:var(--blue);font-size:26px;cursor:pointer;box-shadow:0 10px 30px #1668ff99;animation:pulse 2.6s infinite;color:#fff}
.chat{position:fixed;right:20px;bottom:90px;z-index:96;width:min(350px,92vw);background:#fff;border-radius:20px;box-shadow:0 20px 60px #0007;overflow:hidden;animation:pop .45s var(--ease)}
.chat[hidden]{display:none}.chat header{background:var(--navy);color:#fff;padding:12px 16px;display:grid;grid-template-columns:1fr auto}.chat header small{grid-column:1;color:#9cc0ff}
.chat header button{grid-area:1/2/3/3;background:none;border:0;color:#fff;font-size:24px;cursor:pointer}
.msgs{height:240px;overflow:auto;padding:14px;display:grid;gap:8px;align-content:start}
.m{padding:9px 13px;border-radius:14px;max-width:85%;font-size:.92rem;animation:pop .35s var(--ease)}.m.b{background:#e7f0ff;justify-self:start}.m.u{background:var(--blue);color:#fff;justify-self:end}
.quick{display:flex;flex-wrap:wrap;gap:6px;padding:0 12px 12px}.quick button{border:1px solid var(--blue);background:#fff;color:var(--blue);border-radius:99px;padding:6px 12px;font:inherit;font-size:.82rem;font-weight:700;cursor:pointer}

/* RESPONSIVE */
@media(max-width:900px){
 .burger{display:block}#navPhone{display:none}.nav .btn{padding:10px 14px}
 .nav nav{position:fixed;inset:70px 4% auto;flex-direction:column;background:#06112bf2;border-radius:var(--r);padding:12px;transform:translateY(-20px);opacity:0;pointer-events:none;transition:.35s var(--ease)}
 .nav nav.open{transform:none;opacity:1;pointer-events:auto}
 .hero-grid,.diag-grid,.maint-grid,.about,.contact-grid,.foot-grid{grid-template-columns:1fr}
 .hero-logo{width:150px}.tiles{grid-template-columns:repeat(3,1fr)}.form{grid-template-columns:1fr}.arrow{display:none}
}
@media(prefers-reduced-motion:reduce){
 *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
 .reveal,.benefits li{opacity:1!important;transform:none!important}h1 .w>span{transform:none!important}.title::after{width:72px!important}#snow{display:none}
}

/* logo transparente + centrado de imágenes */
.hero-logo{height:auto;object-fit:contain}.footer img{width:120px;height:auto;object-fit:contain}
.airflow{width:100%;max-width:440px;margin-inline:auto;justify-self:center}
.airflow img{transform:scale(1.07);object-position:center}
.contact figure{display:grid;place-items:center;justify-self:center;width:100%}
.contact figure img{width:100%;max-width:560px;height:auto;margin:0 auto}
.about figure{display:grid;place-items:center}
/* botones flotantes: WhatsApp izquierda, chatbot derecha */
.wa-fab{position:fixed;left:max(20px,env(safe-area-inset-left));bottom:max(20px,env(safe-area-inset-bottom));z-index:95;width:58px;height:58px;border-radius:50%;background:#18b85a;color:#fff;display:grid;place-items:center;box-shadow:0 10px 30px #18b85a99;animation:pulse 2.6s infinite;transition:transform .3s var(--ease)}
.wa-fab:hover{transform:scale(1.12) rotate(-8deg)}
.chat-fab{right:max(20px,env(safe-area-inset-right));bottom:max(20px,env(safe-area-inset-bottom))}
.chat{right:max(20px,env(safe-area-inset-right));bottom:calc(90px + env(safe-area-inset-bottom))}
.chat-in{display:flex;gap:6px;padding:0 12px 12px}.chat-in input{flex:1;min-width:0;border:2px solid #cfe0ff;padding:9px 12px}
.chat-in button{border:0;background:var(--blue);color:#fff;border-radius:12px;padding:0 14px;cursor:pointer;font-size:1rem}
@media(max-width:900px){.airflow{max-width:100%}}


.card[data-clone]{transition:transform .25s,box-shadow .3s,border-color .3s}
.foot-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}

/* ===== Anti-desborde en celular (evita que la página se corra de lado) ===== */
html,body{max-width:100%;overflow-x:clip}
main,footer{overflow-x:clip}
@media(max-width:900px){
 .reveal.left:not(.in),.reveal.right:not(.in){transform:translateY(40px)}
}