/* ============================================================
   Nazan PVC — Manzanares · ventanas y puertas PVC/aluminio
   "Magenta & Grafito" · Space Grotesk + Inter · industrial-tech
   Propio: slider térmico, medidores, perfil interactivo
   ============================================================ */
:root{
  --magenta:#E1007A; --magenta-deep:#B80063; --magenta-soft:#FCE3F0;
  --graphite:#23262C; --graphite-2:#2E323A; --ink:#14161A;
  --steel:#6B7280; --steel-l:#9aa1ad; --mist:#F2F4F7; --line:#E4E7EC; --white:#fff;
  --disp:"Space Grotesk",system-ui,sans-serif;
  --sans:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --container:1200px; --r:6px; --r-lg:14px;
  --shadow:0 26px 64px -30px rgba(20,22,26,.55);
  --shadow-sm:0 12px 28px -18px rgba(20,22,26,.5);
  --t:.45s cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--white);
  line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--disp);font-weight:700;line-height:1.05;margin:0;letter-spacing:-.02em}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:26px}
.eyebrow{font-family:var(--disp);font-weight:600;font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--magenta);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--magenta)}
.eyebrow.c::before{display:none}
.hl{color:var(--magenta)}

.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--disp);font-weight:600;font-size:.95rem;
  padding:.85em 1.6em;border-radius:var(--r);cursor:pointer;border:2px solid transparent;transition:var(--t)}
.btn svg{width:1.05em;height:1.05em}
.btn-mag{background:var(--magenta);color:#fff}
.btn-mag:hover{background:var(--magenta-deep);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-dark{background:var(--graphite);color:#fff}
.btn-dark:hover{background:#000;transform:translateY(-2px)}
.btn-ghost{border-color:var(--graphite);color:var(--graphite)}
.btn-ghost:hover{background:var(--graphite);color:#fff;transform:translateY(-2px)}
.btn-light{border-color:rgba(255,255,255,.55);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}

/* header */
.hd{position:fixed;inset:0 0 auto 0;z-index:60;transition:var(--t)}
.hd .bar{display:flex;align-items:center;justify-content:space-between;padding:15px 0;transition:var(--t)}
.hd.scrolled{background:rgba(255,255,255,.97);backdrop-filter:blur(10px);box-shadow:0 1px 0 var(--line)}
.brand img{height:34px;width:auto}
.brand .logo-light{display:none}
.hd:not(.scrolled) .brand .logo-dark{display:none}
.hd:not(.scrolled) .brand .logo-light{display:block}
.nav{display:flex;align-items:center;gap:28px}
.nav a.lk{font-family:var(--disp);font-weight:500;font-size:.95rem;position:relative;color:var(--ink)}
.hd:not(.scrolled) .nav a.lk{color:#fff}
.nav a.lk::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:2px;background:var(--magenta);transition:var(--t)}
.nav a.lk:hover::after{width:100%}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;color:var(--ink)}
.hd:not(.scrolled) .burger{color:#fff}
.burger span{display:block;width:24px;height:2px;background:currentColor;margin:5px auto;transition:var(--t)}

/* hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,22,26,.9)0%,rgba(20,22,26,.66)45%,rgba(20,22,26,.25)100%)}
.hero-inner{position:relative;padding-top:120px;padding-bottom:70px;max-width:760px}
.hero h1{font-size:clamp(2.6rem,6vw,5rem);font-weight:700;margin:.2em 0 .35em;letter-spacing:-.03em}
.hero .lead{font-size:1.2rem;color:rgba(255,255,255,.9);max-width:50ch;margin-bottom:2em}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-specs{position:absolute;left:0;right:0;bottom:0;border-top:1px solid rgba(255,255,255,.14);
  background:rgba(20,22,26,.5);backdrop-filter:blur(6px)}
.hero-specs .container{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;align-items:center;padding-block:18px}
.hero-specs .s{display:flex;align-items:center;gap:12px}
.hero-specs .s svg{width:26px;height:26px;color:var(--magenta);flex:none}
.hero-specs .s b{font-family:var(--disp);font-size:1.05rem;display:block;line-height:1.1}
.hero-specs .s span{font-size:.8rem;color:rgba(255,255,255,.72)}

/* sections */
.sec{padding:clamp(64px,8vw,112px) 0}
.sec-head{max-width:680px;margin-bottom:48px}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head h2{font-size:clamp(2.1rem,4.6vw,3.4rem);margin:.2em 0 .3em}
.sec-head p{color:var(--steel);font-size:1.1rem}
.bg-mist{background:var(--mist)}
.bg-dark{background:var(--graphite);color:#fff}
.bg-dark .sec-head p{color:rgba(255,255,255,.72)}

/* ===== THERMAL SLIDER (signature) ===== */
.compare{position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow);user-select:none;cursor:ew-resize;background:#111}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.compare .after{clip-path:inset(0 0 0 50%);}
.compare .lab{position:absolute;top:16px;display:flex;flex-direction:column;line-height:1.15;
  font-family:var(--disp);padding:.5em .95em;border-radius:13px;color:#fff;z-index:3;box-shadow:var(--shadow-sm)}
.compare .lab b{font-weight:700;font-size:.8rem;letter-spacing:.05em;text-transform:uppercase}
.compare .lab i{font-style:normal;font-weight:500;font-size:.66rem;opacity:.92;margin-top:1px}
.compare .lab.l{left:16px;background:rgba(214,40,30,.9)}
.compare .lab.r{right:16px;background:rgba(225,0,122,.92)}
.compare .handle{position:absolute;top:0;bottom:0;left:50%;width:2px;background:#fff;z-index:4;transform:translateX(-1px)}
.compare .handle::before{content:"";position:absolute;top:50%;left:50%;width:46px;height:46px;transform:translate(-50%,-50%);
  border-radius:50%;background:#fff;box-shadow:var(--shadow-sm)}
.compare .handle::after{content:"\2194";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  color:var(--graphite);font-size:1.2rem;z-index:5;font-weight:bold}
.compare-cap{display:flex;justify-content:space-between;color:var(--steel);font-size:.9rem;margin-top:14px;flex-wrap:wrap;gap:8px}

/* products */
.prod{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:300px;display:flex;align-items:flex-end;
  color:#fff;box-shadow:var(--shadow-sm);transition:var(--t)}
.pcard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:var(--t);z-index:0}
.pcard::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,22,26,0)35%,rgba(20,22,26,.85));z-index:1}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pcard:hover img{transform:scale(1.06)}
.pcard .pc{position:relative;z-index:2;padding:26px 24px}
.pcard .pc h3{font-size:1.35rem;margin-bottom:.2em}
.pcard .pc p{font-size:.92rem;color:rgba(255,255,255,.82);margin:0}
.pcard .tag{position:absolute;top:16px;left:16px;z-index:2;background:var(--magenta);color:#fff;
  font-family:var(--disp);font-weight:600;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;padding:.35em .8em;border-radius:999px}

/* ventajas + gauges */
.adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.gauges{display:grid;gap:26px}
.gauge .top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.gauge .top b{font-family:var(--disp);font-size:1.05rem}
.gauge .top .v{font-family:var(--disp);font-weight:700;color:var(--magenta);font-size:1.2rem}
.gauge .track{height:12px;border-radius:999px;background:var(--mist);overflow:hidden}
.bg-dark .gauge .track{background:rgba(255,255,255,.12)}
.gauge .fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--magenta),#ff3d9e);transition:width 1.4s cubic-bezier(.22,.61,.36,1)}
.adv-list{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.adv-list li{display:flex;gap:14px;align-items:flex-start}
.adv-list .ic{width:42px;height:42px;border-radius:10px;background:var(--magenta-soft);color:var(--magenta-deep);display:grid;place-content:center;flex:none}
.bg-dark .adv-list .ic{background:rgba(225,0,122,.18);color:#ff5fad}
.adv-list .ic svg{width:22px;height:22px}
.adv-list b{font-family:var(--disp);display:block;margin-bottom:1px}
.adv-list span{color:var(--steel);font-size:.95rem}
.bg-dark .adv-list span{color:rgba(255,255,255,.7)}

/* profile cross-section */
.profile{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.profile-svg{width:100%;height:auto;filter:drop-shadow(0 20px 40px rgba(20,22,26,.18))}
.profile-svg .part{transition:opacity var(--t);cursor:pointer}
.profile-svg .axis{font-family:var(--disp);font-weight:600;font-size:11px;letter-spacing:.14em;fill:var(--steel-l)}
.profile-svg [data-fillable]{transition:fill .3s ease,stroke .3s ease}
/* highlight: magenta outline on the active part */
.profile-svg .part:hover [data-fillable],
.profile-svg .part.hot [data-fillable]{stroke:var(--magenta);stroke-width:2.5}
/* PVC parts wash to soft magenta */
.profile-svg [data-part="marco"]:hover [data-fillable],.profile-svg [data-part="marco"].hot [data-fillable],
.profile-svg [data-part="refuerzo"]:hover [data-fillable],.profile-svg [data-part="refuerzo"].hot [data-fillable],
.profile-svg [data-part="hoja"]:hover [data-fillable],.profile-svg [data-part="hoja"].hot [data-fillable]{fill:var(--magenta-soft)}
/* rubber seals light up solid magenta */
.profile-svg [data-part="juntas"]:hover [data-fillable],.profile-svg [data-part="juntas"].hot [data-fillable]{fill:var(--magenta)}
/* focus: dim the other parts while inspecting one */
.profile-svg:has(.part:hover) .part:not(:hover){opacity:.42}
.legend .li.hot{border-color:var(--magenta);background:var(--magenta-soft)}
.legend{display:grid;gap:14px}
.legend .li{display:flex;gap:14px;align-items:flex-start;padding:12px 14px;border-radius:10px;border:1px solid var(--line);transition:var(--t)}
.legend .li:hover{border-color:var(--magenta);background:var(--magenta-soft)}
.legend .n{font-family:var(--disp);font-weight:700;color:var(--magenta);flex:none}
.legend b{font-family:var(--disp);display:block}
.legend span{color:var(--steel);font-size:.92rem}

/* fabrica band */
.fab{position:relative;overflow:hidden;color:#fff}
.fab .bg{position:absolute;inset:0}
.fab .bg img{width:100%;height:100%;object-fit:cover}
.fab .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,22,26,.95),rgba(20,22,26,.7))}
.fab .container{position:relative;padding-block:clamp(64px,8vw,104px)}
.fab .inner{max-width:600px;margin-bottom:42px}
.fab h2{font-size:clamp(2rem,4.4vw,3.2rem);margin:.2em 0 .4em}
.fab p{color:rgba(255,255,255,.85);font-size:1.1rem}
.fcount{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.fcount .f b{font-family:var(--disp);font-size:clamp(2rem,3.6vw,3rem);color:var(--magenta);display:block;line-height:1}
.fcount .f span{font-size:.92rem;color:rgba(255,255,255,.8)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.contact h2{font-size:clamp(2.1rem,4.4vw,3.2rem)}
.cinfo{display:grid;gap:20px;margin-top:8px}
.cinfo .row{display:flex;gap:15px;align-items:flex-start}
.cinfo .ic{width:44px;height:44px;border-radius:10px;background:var(--mist);color:var(--magenta);display:grid;place-content:center;flex:none}
.cinfo .ic svg{width:22px;height:22px}
.cinfo .row b{display:block;font-family:var(--disp);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--magenta);margin-bottom:2px}
.cinfo .row a,.cinfo .row span{font-size:1.05rem;color:var(--ink)}
.cta-row{display:flex;gap:13px;flex-wrap:wrap;margin-top:28px}
.map-card{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);min-height:360px;border:1px solid var(--line)}
.map-card iframe{width:100%;height:100%;min-height:360px;border:0}
.note{font-size:.82rem;color:var(--steel-l);margin-top:12px}

/* footer */
.ft{background:#15171B;color:rgba(255,255,255,.66);padding:56px 0 26px}
.ft-top{display:flex;justify-content:space-between;gap:36px;flex-wrap:wrap;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:30px}
.ft-logo{display:inline-flex;align-items:center;gap:12px;margin-bottom:14px}
.ft-logo svg{width:42px;height:42px;box-shadow:0 8px 20px -8px rgba(225,0,122,.7)}
.ft-logo span{font-family:var(--disp);font-weight:500;font-size:1.5rem;letter-spacing:.2em;color:#fff}
.ft-brand p{max-width:34ch;font-size:.93rem}
.ft-legal{margin:18px 0 0;font-size:.76rem;line-height:1.55;color:rgba(255,255,255,.42);max-width:92ch}
.ft-legal b{color:rgba(255,255,255,.62);font-weight:600}
.ft-cols{display:flex;gap:52px;flex-wrap:wrap}
.ft-cols h4{font-family:var(--disp);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--magenta);margin-bottom:13px}
.ft-cols a{display:block;color:rgba(255,255,255,.7);font-size:.94rem;margin-bottom:8px}
.ft-cols a:hover{color:#fff}
.ft-bot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:20px;font-size:.82rem}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.09s}.reveal[data-d="2"]{transition-delay:.18s}.reveal[data-d="3"]{transition-delay:.27s}

@media(max-width:980px){
  .nav .lk,.nav .btn{display:none}.burger{display:block}
  .nav.open{position:fixed;inset:0 0 0 auto;width:min(82vw,340px);background:#fff;flex-direction:column;justify-content:center;gap:22px;padding:40px;box-shadow:var(--shadow)}
  .nav.open .lk{display:block;color:var(--ink);font-size:1.3rem}.nav.open .btn{display:inline-flex}
  .prod{grid-template-columns:repeat(2,1fr)}
  .adv-grid,.profile,.contact-grid{grid-template-columns:1fr;gap:36px}
  .fcount{grid-template-columns:1fr 1fr;gap:30px}
  .hero-specs .container{grid-template-columns:repeat(2,1fr);gap:22px 28px}
}
@media(max-width:560px){body{font-size:16px}.prod{grid-template-columns:1fr}.hero-specs .container{gap:18px 20px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}