/* Tecnoclima - Premium HVAC site */
:root{
  --c-primary:#1e6fb8;
  --c-primary-dark:#0f3d6e;
  --c-primary-light:#5cb8e6;
  --c-accent:#22a8e0;
  --c-cyan:#7dd3fc;
  --c-bg:#ffffff;
  --c-bg-alt:#f4f8fb;
  --c-text:#0e1b2c;
  --c-muted:#5b6b80;
  --c-border:#dbe5ee;
  --grad-hero:linear-gradient(135deg,#0f3d6e 0%,#1e6fb8 55%,#22a8e0 100%);
  --grad-soft:linear-gradient(180deg,#f4f8fb 0%,#ffffff 100%);
  --shadow-sm:0 2px 8px rgba(15,61,110,.06);
  --shadow-md:0 8px 24px rgba(15,61,110,.10);
  --shadow-lg:0 18px 50px rgba(15,61,110,.18);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --font-display:'Montserrat','Inter',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --maxw:1200px;
  --header-h:78px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-body);color:var(--c-text);background:var(--c-bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--c-primary-dark);line-height:1.15;margin:0 0 .6em;letter-spacing:-.01em;font-weight:800}
h1{font-size:clamp(2rem,4.5vw,3.6rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em;color:var(--c-text)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{display:inline-block;font:700 .78rem/1 var(--font-display);letter-spacing:.18em;text-transform:uppercase;color:var(--c-accent);padding:.5em .9em;border:1px solid rgba(34,168,224,.3);border-radius:999px;margin-bottom:1rem;background:rgba(34,168,224,.06)}
.accent{color:var(--c-accent)}
.rounded{border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}

/* HEADER */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:all .25s}
.site-header.scrolled{box-shadow:var(--shadow-sm);border-bottom-color:var(--c-border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:var(--header-h)}
.brand img{height:54px;width:auto}
.primary-nav{display:flex;align-items:center;gap:8px}
.primary-nav>ul{list-style:none;display:flex;align-items:center;gap:4px;padding:0;margin:0}
.primary-nav a{color:var(--c-text);font-weight:600;padding:.6rem .9rem;border-radius:8px;font-size:.95rem}
.primary-nav a:hover,.primary-nav a.active{background:var(--c-bg-alt);color:var(--c-primary-dark)}
.has-sub{position:relative}
.submenu{position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);box-shadow:var(--shadow-lg);min-width:320px;padding:.5rem;list-style:none;margin:0;opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;z-index:50}
.has-sub:hover .submenu,.has-sub:focus-within .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu a{display:block;font-size:.9rem;padding:.55rem .8rem;border-radius:6px}
.header-cta{margin-left:12px}
.cta-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.85em 1.6em;border-radius:999px;font:700 .95rem/1 var(--font-display);letter-spacing:.02em;cursor:pointer;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s,color .2s;text-decoration:none}
.cta-btn.primary,.cta-btn{background:var(--grad-hero);color:#fff;box-shadow:0 8px 24px rgba(30,111,184,.35)}
.cta-btn.primary:hover,.cta-btn:hover{transform:translateY(-2px);color:#fff}
.cta-btn.ghost{background:transparent;color:var(--c-primary-dark);border-color:var(--c-primary);box-shadow:none}
.cta-btn.ghost:hover{background:var(--c-primary);color:#fff}
.nav-toggle{display:none;background:none;border:0;width:42px;height:42px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--c-primary-dark);border-radius:2px;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* HERO */
.hero{position:relative;overflow:hidden;background:var(--grad-soft);padding:80px 0 60px}
.hero-bg{position:absolute;inset:0;background:radial-gradient(900px 500px at 85% -10%,rgba(34,168,224,.18),transparent 60%),radial-gradient(700px 500px at -10% 110%,rgba(15,61,110,.12),transparent 60%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}
.hero-text h1{margin-bottom:.5em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:1.6rem 0 2rem}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;list-style:none;padding:0;margin:2rem 0 0;border-top:1px solid var(--c-border);padding-top:1.5rem}
.hero-stats strong{display:block;font:800 1.8rem/1 var(--font-display);color:var(--c-primary-dark)}
.hero-stats span{color:var(--c-muted);font-size:.85rem}
.hero-visual img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);transform:perspective(1200px) rotateY(-4deg) rotateX(2deg)}

/* PAGE HERO */
.page-hero{background:var(--grad-hero);color:#fff;padding:90px 0 70px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(800px 400px at 80% 0%,rgba(255,255,255,.15),transparent 70%);pointer-events:none}
.page-hero h1{color:#fff;max-width:18ch}
.page-hero p{color:rgba(255,255,255,.85);max-width:60ch;font-size:1.1rem}
.page-hero .eyebrow{color:#fff;border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.08)}

/* SECTIONS */
.section{padding:80px 0}
.section-alt{background:var(--c-bg-alt)}
.section-head{text-align:center;margin-bottom:48px}
.section-head p{color:var(--c-muted);max-width:60ch;margin:0 auto}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.intro-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:50px;align-items:center}
.lead{font-size:1.15rem}

/* SERVICES */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.svc-card{display:flex;flex-direction:column;padding:32px 26px;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);text-decoration:none;color:var(--c-text);transition:.25s;position:relative;overflow:hidden}
.svc-card::after{content:"";position:absolute;inset:auto -40% -60% auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(34,168,224,.2),transparent 70%);opacity:0;transition:opacity .25s}
.svc-card:hover{transform:translateY(-6px);border-color:var(--c-accent);box-shadow:var(--shadow-lg);color:var(--c-text)}
.svc-card:hover::after{opacity:1}
.svc-icon{font-size:2rem;margin-bottom:14px;display:inline-flex;width:54px;height:54px;align-items:center;justify-content:center;background:var(--c-bg-alt);border-radius:14px}
.svc-card h3{margin-bottom:8px}
.svc-card p{color:var(--c-muted);font-size:.95rem}
.svc-arrow{margin-top:auto;padding-top:14px;color:var(--c-accent);font-weight:700;font-size:.9rem}

/* MISIÓN VISIÓN VALORES */
.mvv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.mvv-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--c-border);box-shadow:var(--shadow-sm);transition:.25s}
.mvv-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.mvv-card img{height:200px;width:100%;object-fit:cover}
.mvv-card h3,.mvv-card p,.mvv-card ul{padding:0 24px}
.mvv-card h3{padding-top:22px}
.mvv-card p{padding-bottom:24px;color:var(--c-muted)}
.values-list{padding:0 24px 24px 44px;color:var(--c-muted);margin:0}

/* SVC DETAIL */
.svc-detail{display:grid;grid-template-columns:2fr 1fr;gap:50px;align-items:flex-start}
.check-list{list-style:none;padding:0;margin:0 0 1.5em;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px}
.check-list li{padding:.7em 1em .7em 2.4em;background:var(--c-bg-alt);border-radius:10px;position:relative;font-weight:600;color:var(--c-primary-dark)}
.check-list li::before{content:"✓";position:absolute;left:.8em;top:50%;transform:translateY(-50%);color:#fff;background:var(--c-accent);width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:800}
.aside-card{padding:28px;background:var(--c-bg-alt);border-radius:var(--radius);border:1px solid var(--c-border);position:sticky;top:calc(var(--header-h) + 20px)}
.aside-card h3{color:var(--c-primary-dark);margin-top:0}
.svc-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.svc-gallery figure{margin:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.svc-gallery img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .4s}
.svc-gallery figure:hover img{transform:scale(1.05)}

/* PRODUCTS */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.prod-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;transition:.25s}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.prod-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.prod-card h3,.prod-card p{padding:0 22px}
.prod-card h3{padding-top:20px}
.prod-card p{padding-bottom:22px;color:var(--c-muted)}
.brands{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;list-style:none;padding:0;margin:0}
.brands li{padding:.9em 1.6em;background:#fff;border:1px solid var(--c-border);border-radius:999px;font:700 .95rem var(--font-display);color:var(--c-primary-dark);box-shadow:var(--shadow-sm)}

/* GALLERY */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.gal-item{display:block;overflow:hidden;border-radius:var(--radius);cursor:zoom-in;box-shadow:var(--shadow-sm)}
.gal-item img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:.4s}
.gal-item:hover img{transform:scale(1.07)}

/* LIGHTBOX */
.lightbox{position:fixed;inset:0;background:rgba(8,18,35,.94);display:none;align-items:center;justify-content:center;z-index:200;padding:24px}
.lightbox.open{display:flex}
.lb-img{max-width:90vw;max-height:85vh;border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lb-close,.lb-prev,.lb-next{position:absolute;background:rgba(255,255,255,.1);color:#fff;border:0;border-radius:50%;width:48px;height:48px;font-size:1.6rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{background:rgba(255,255,255,.25)}
.lb-close{top:20px;right:20px}
.lb-prev{left:20px;top:50%;transform:translateY(-50%)}
.lb-next{right:20px;top:50%;transform:translateY(-50%)}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:60px}
.contact-list{list-style:none;padding:0;margin:0 0 1.5em}
.contact-list li{padding:.6em 0;border-bottom:1px dashed var(--c-border)}
.contact-form{display:grid;gap:14px;background:#fff;padding:32px;border-radius:var(--radius);border:1px solid var(--c-border);box-shadow:var(--shadow-sm)}
.form-row label{display:block;font-weight:600;color:var(--c-primary-dark);font-size:.9rem;margin-bottom:6px}
.form-row input,.form-row textarea{width:100%;padding:.85em 1em;border:1px solid var(--c-border);border-radius:10px;font:400 1rem var(--font-body);background:var(--c-bg-alt);transition:.2s}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--c-accent);background:#fff;box-shadow:0 0 0 4px rgba(34,168,224,.15)}
.form-status{margin:0;padding:.8em 1em;border-radius:8px;font-size:.9rem}
.form-status.ok{background:#e6f7ee;color:#0a6634}
.form-status.err{background:#fde8e8;color:#a51b1b}
.map-wrap{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.socials{display:flex;gap:10px;margin-top:14px}
.socials a{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(34,168,224,.12);color:var(--c-primary-dark);font-weight:800}
.socials a:hover{background:var(--c-accent);color:#fff}
.socials.big{margin-top:18px}
.socials.big a{width:auto;border-radius:999px;padding:.6em 1.2em;font-size:.9rem}

/* CTA BANNER */
.cta-banner{background:var(--grad-hero);color:#fff;padding:60px 0;position:relative;overflow:hidden}
.cta-banner::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 300px at 90% 50%,rgba(255,255,255,.1),transparent 70%)}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin:0 0 .3em}
.cta-inner p{color:rgba(255,255,255,.85);margin:0}
.cta-banner .cta-btn{background:#fff;color:var(--c-primary-dark);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.cta-banner .cta-btn:hover{background:var(--c-cyan);color:var(--c-primary-dark)}

/* FOOTER */
.site-footer{background:#0b1d33;color:#cfd9e6;padding:70px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-grid h4{color:#fff;font-size:1rem;margin-bottom:1em;letter-spacing:.05em;text-transform:uppercase}
.footer-grid p,.footer-grid address{color:#9fb1c8;font-style:normal;font-size:.92rem;line-height:1.7}
.footer-logo{height:60px;background:#fff;padding:8px 14px;border-radius:10px;margin-bottom:16px;width:auto}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{margin-bottom:.5em}
.footer-list a{color:#cfd9e6;font-size:.92rem}
.footer-list a:hover{color:var(--c-cyan)}
.footer-bottom{margin-top:50px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);text-align:center}
.footer-bottom p{margin:0;color:#7d8da3;font-size:.85rem}

/* FLOATING */
.wa-float{position:fixed;bottom:24px;right:24px;width:60px;height:60px;background:#25d366;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 30px rgba(37,211,102,.45);z-index:90;transition:.25s}
.wa-float:hover{transform:scale(1.08);color:#fff}
.to-top{position:fixed;bottom:96px;right:28px;width:46px;height:46px;border-radius:50%;border:0;background:var(--c-primary-dark);color:#fff;font-size:1.4rem;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;z-index:90;box-shadow:var(--shadow-md)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* REVEAL */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* RESPONSIVE */
@media (max-width:1024px){
  .hero-inner,.two-col,.intro-grid,.contact-grid,.svc-detail{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1;max-width:520px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .aside-card{position:static}
}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .primary-nav{position:fixed;inset:var(--header-h) 0 auto 0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:20px 24px 30px;border-bottom:1px solid var(--c-border);box-shadow:var(--shadow-lg);transform:translateY(-120%);transition:transform .3s;max-height:calc(100vh - var(--header-h));overflow:auto}
  .primary-nav.open{transform:translateY(0)}
  .primary-nav>ul{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .primary-nav a{padding:.9em 1em;border-radius:8px}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;background:var(--c-bg-alt);min-width:0;margin:6px 0 12px;padding:6px}
  .header-cta{margin:14px 0 0;text-align:center}
  .hero{padding:50px 0 30px}
  .section{padding:60px 0}
  .page-hero{padding:60px 0 50px}
  .footer-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr 1fr;gap:10px}
  .hero-stats strong{font-size:1.4rem}
  .cta-inner{flex-direction:column;align-items:flex-start;text-align:left}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .cta-btn{justify-content:center}
  .brand img{height:46px}
}