/* Layout: plano técnico. Bandas a todo el ancho (azul obra / papel), rejilla de plano de fondo, cotas en mono como detalle propio del oficio. */
:root{
  --bg:#F2F6F9; --paper:#FFFFFF; --ink:#0E2236; --muted:#55687B; --line:#D3DEE7;
  --navy:#0F2D4A; --navy-2:#163A5C; --cyan:#0796B8; --cyan-ink:#06708A; --cyan-soft:#E1F3F8;
  --on-navy:#FFFFFF; --on-navy-muted:#B9CBDB; --grid:rgba(7,150,184,.10); --wa:#1FA855;
  --f-display:"Barlow Condensed","Arial Narrow","Roboto Condensed",Arial,sans-serif;
  --f-body:"Barlow",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --r:6px; --max:1120px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0A1724; --paper:#10243A; --ink:#E6EEF5; --muted:#93A6B8; --line:#21405E;
  --navy:#0B1E31; --navy-2:#122C46; --cyan:#3CC3E2; --cyan-ink:#3CC3E2; --cyan-soft:#12364A;
  --on-navy:#E6EEF5; --on-navy-muted:#93A6B8; --grid:rgba(60,195,226,.07); --wa:#25C165; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0A1724; --paper:#10243A; --ink:#E6EEF5; --muted:#93A6B8; --line:#21405E;
  --navy:#0B1E31; --navy-2:#122C46; --cyan:#3CC3E2; --cyan-ink:#3CC3E2; --cyan-soft:#12364A;
  --on-navy:#E6EEF5; --on-navy-muted:#93A6B8; --grid:rgba(60,195,226,.07); --wa:#25C165; color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan-ink)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
h1,h2,h3{font-family:var(--f-display);font-weight:700;line-height:1.05;margin:0;text-wrap:balance;letter-spacing:.005em}
h1{font-size:clamp(38px,7vw,64px)}
h2{font-size:clamp(30px,4.6vw,42px)}
h3{font-size:24px;font-weight:600}
p{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.narrow{max-width:760px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:50;background:var(--paper);padding:8px 12px}

/* Cabecera */
.top{background:var(--navy);color:var(--on-navy);border-bottom:1px solid rgba(127,160,190,.25)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px}
.logo{display:flex;align-items:center;gap:10px;color:var(--on-navy);text-decoration:none;min-width:0}
.logo svg{flex:none}
.logo b{font-family:var(--f-display);font-size:24px;letter-spacing:.14em;text-transform:uppercase;line-height:1}
.logo small{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--on-navy-muted);line-height:1.3}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:var(--on-navy);text-decoration:none;font-weight:500;font-size:16px;padding:8px 10px;border-radius:4px}
.nav a:hover,.nav a[aria-current="page"]{background:var(--navy-2)}
.nav .cta{background:var(--cyan);color:#062033;font-weight:600}
.nav .cta:hover{background:var(--cyan)}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;border:1px solid rgba(127,160,190,.5);border-radius:4px;padding:6px 12px;font-weight:600;font-size:15px}
.menu summary::-webkit-details-marker{display:none}
.menu[open] summary{background:var(--navy-2)}
.menu .drop{position:absolute;right:0;top:calc(100% + 8px);background:var(--navy);border:1px solid rgba(127,160,190,.35);border-radius:var(--r);min-width:240px;padding:8px;display:grid;z-index:40;box-shadow:0 12px 30px rgba(0,0,0,.25)}
.menu .drop a{color:var(--on-navy);text-decoration:none;padding:10px 12px;border-radius:4px;font-weight:500}
.menu .drop a:hover{background:var(--navy-2)}
@media (max-width:900px){.nav{display:none}.menu{display:block}}

/* Bandas */
.band{padding-block:56px}
.band.alt{background:var(--paper);border-block:1px solid var(--line)}
.band.dark{background:var(--navy);color:var(--on-navy);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
.stack{display:grid;gap:18px}
.head{display:grid;gap:10px;max-width:720px;margin-bottom:28px}
.eyebrow{font-family:var(--f-mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan-ink)}
.dark .eyebrow{color:var(--cyan)}
.lead{font-size:19px;color:var(--muted);max-width:62ch}
.dark .lead{color:var(--on-navy-muted)}

/* Hero */
.hero{background:var(--navy);color:var(--on-navy);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding-block:56px 64px}
.hero .txt{display:grid;gap:18px;min-width:0}
.hero p.lead{color:var(--on-navy-muted)}
.hero .plano{min-width:0}
.hero .plano svg{width:100%;height:auto;max-width:520px;margin-inline:auto;display:block}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;gap:28px;padding-block:36px 44px}.hero .plano svg{max-width:420px}}
.page-hero{background:var(--navy);color:var(--on-navy);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
.page-hero .wrap{display:grid;gap:14px;padding-block:40px 44px}
.page-hero .lead{color:var(--on-navy-muted)}
.crumbs{font-size:14px;color:var(--on-navy-muted);display:flex;flex-wrap:wrap;gap:6px}
.crumbs a{color:var(--on-navy-muted)}
.crumbs span[aria-hidden]{opacity:.6}

/* Botones */
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:10px;justify-content:center;text-decoration:none;font:600 17px/1.2 var(--f-body);border-radius:4px;padding:14px 20px;border:1px solid transparent;cursor:pointer}
.btn.wa{background:var(--wa);color:#fff}
.btn.pri{background:var(--cyan);color:#062033}
.btn.ghost{border-color:currentColor;color:inherit;background:transparent}
.btn svg{flex:none}

/* Datos rápidos bajo el hero */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r);background:var(--paper)}
.facts div{padding:18px;display:grid;gap:4px;border-left:1px solid var(--line);min-width:0}
.facts div:first-child{border-left:0}
.facts b{font-family:var(--f-display);font-size:22px;line-height:1.1}
.facts span{font-size:15px;color:var(--muted)}
@media (max-width:820px){.facts{grid-template-columns:1fr 1fr}.facts div:nth-child(3){border-left:0}.facts div:nth-child(n+3){border-top:1px solid var(--line)}}
@media (max-width:420px){.facts{grid-template-columns:1fr}.facts div{border-left:0!important;border-top:1px solid var(--line)}.facts div:first-child{border-top:0}}

/* Servicios */
.svc{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.svc a{display:grid;gap:8px;align-content:start;padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.svc a:hover{border-color:var(--cyan);transform:translateY(-2px)}
.svc h3{font-size:24px}
.svc p{color:var(--muted);font-size:16px}
.svc .more{font-weight:600;color:var(--cyan-ink);font-size:15px;margin-top:4px}
.band.alt .svc a{background:var(--bg)}

/* Pasos (secuencia real de la obra) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:p;list-style:none;margin:0;padding:0}
.steps li{display:grid;gap:8px;align-content:start;padding-top:16px;border-top:2px solid var(--cyan);min-width:0}
.steps li::before{counter-increment:p;content:"0" counter(p);font-family:var(--f-mono);font-size:14px;color:var(--cyan)}
.steps h3{font-size:22px}
.steps p{color:var(--on-navy-muted);font-size:16px}
.band:not(.dark) .steps p{color:var(--muted)}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}

/* Ventajas */
.why{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px}
.why div{display:grid;gap:6px;min-width:0}
.why h3{font-size:22px}
.why p{color:var(--muted)}
@media (max-width:700px){.why{grid-template-columns:1fr}}

/* Zonas */
.zonas{display:flex;flex-wrap:wrap;gap:10px}
.zonas a{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink);text-decoration:none;font-weight:500}
.zonas a::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan)}
.zonas a:hover{border-color:var(--cyan)}

/* Obras / huecos de foto */
.obras{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.obra{margin:0;display:grid;gap:8px}
.obra .ph{aspect-ratio:4/3;max-width:100%;border:1px dashed var(--line);border-radius:var(--r);background:var(--paper);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:20px 20px;display:grid;place-items:center;color:var(--muted);font-family:var(--f-mono);font-size:13px;text-align:center;padding:12px}
.obra img{aspect-ratio:4/3;object-fit:cover;border-radius:var(--r);width:100%}
.obra figcaption{font-size:15px;color:var(--muted)}
.obra figcaption b{color:var(--ink);font-weight:600;display:block}

/* Contenido de servicio */
.cols{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:40px;align-items:start}
@media (max-width:860px){.cols{grid-template-columns:1fr}}
.prose{display:grid;gap:16px;max-width:68ch}
.prose h2{margin-top:16px}
.prose ul{margin:0;padding-left:20px;display:grid;gap:6px}
.side{position:sticky;top:16px;display:grid;gap:14px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.side h3{font-size:22px}
.side p{color:var(--muted);font-size:16px}
.side .btn{width:100%}
.side .tel{font-family:var(--f-mono);font-size:18px;color:var(--ink);text-align:center}
@media (max-width:860px){.side{position:static}}
.checks{list-style:none;padding:0!important;margin:0;display:grid;gap:10px}
.checks li{position:relative;padding-left:30px}
.checks li::before{content:"";position:absolute;left:0;top:.35em;width:18px;height:18px;border-radius:3px;background:var(--cyan-soft);border:1px solid var(--cyan)}
.checks li::after{content:"";position:absolute;left:6px;top:calc(.35em + 3px);width:5px;height:9px;border:solid var(--cyan-ink);border-width:0 2px 2px 0;transform:rotate(45deg)}

/* FAQ */
.faq{display:grid;gap:10px}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:0 18px}
.faq summary{cursor:pointer;font-weight:600;padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--cyan-ink);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding-bottom:16px;color:var(--muted)}

/* CTA */
.cta-band .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px}
.cta-band h2{max-width:20ch}

/* Contacto */
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:start}
@media (max-width:820px){.contact{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:grid;gap:14px}
.form{display:grid;gap:14px}
.form label{display:grid;gap:4px;font-size:15px;font-weight:500}
.form input,.form textarea,.form select{width:100%;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:11px 12px}
.form .err{color:#D93A3F;font-size:15px}
.dl{display:grid;gap:12px;margin:0}
.dl div{display:grid;gap:2px}
.dl dt{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.dl dd{margin:0;font-size:18px}
.copy{font:inherit;font-size:14px;background:transparent;color:var(--cyan-ink);border:1px solid var(--line);border-radius:4px;padding:2px 8px;margin-left:8px;cursor:pointer}

/* Presupuesto hub */
.calcs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:820px){.calcs{grid-template-columns:1fr}}
.calcs .c{display:grid;gap:10px;align-content:start;padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);color:var(--ink);text-decoration:none}
.calcs a.c:hover{border-color:var(--cyan)}
.calcs .c p{color:var(--muted)}
.pill{justify-self:start;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:3px}
.pill.on{background:var(--cyan-soft);color:var(--cyan-ink)}
.pill.off{background:var(--bg);color:var(--muted);border:1px solid var(--line)}

/* Legal */
.legal{display:grid;gap:14px;max-width:72ch}
.legal h2{font-size:28px;margin-top:18px}
.legal ul{margin:0;padding-left:20px;display:grid;gap:6px}

/* Pie */
.foot{background:var(--navy);color:var(--on-navy-muted);font-size:15px}
.foot .wrap{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:28px;padding-block:44px 28px}
.foot h2{font-size:20px;color:var(--on-navy);letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}
.foot a{color:var(--on-navy-muted);text-decoration:none}
.foot a:hover{color:var(--on-navy);text-decoration:underline}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot address{font-style:normal;display:grid;gap:4px}
.foot .legalrow{grid-column:1/-1;border-top:1px solid rgba(127,160,190,.25);padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px}
@media (max-width:860px){.foot .wrap{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot .wrap{grid-template-columns:1fr}}

/* Botón flotante WhatsApp */
.fab{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:30;display:inline-flex;align-items:center;gap:8px;background:var(--wa);color:#fff;text-decoration:none;font-weight:600;padding:12px 16px;border-radius:999px;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.fab span{font-size:16px}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.calcs.calcs4{grid-template-columns:repeat(2,1fr)}
@media (max-width:820px){.calcs.calcs4{grid-template-columns:1fr}}