:root{
  --yeso:#f3f3f0; --gris-yeso:#dddbd5; --carbon:#1f2025; --cobalto:#2846b5; --cinta:#e7d08a;
  --texto:#22232a; --suave:#5d5f68; --linea:#d5d3cd;
  --display:"Young Serif",Georgia,serif; --body:"Instrument Sans",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--yeso);color:var(--texto);font:400 17px/1.6 var(--body)}
a{color:inherit}
:focus-visible{outline:3px solid var(--cobalto);outline-offset:3px}
.env{max-width:1160px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--display);font-weight:400;margin:0;line-height:1.05}
h1{font-size:clamp(2.6rem,6vw,4.6rem);letter-spacing:-.01em}
h2{font-size:clamp(2rem,4vw,3rem)}
h3{font-family:var(--body);font-weight:700;font-size:1.15rem}
p{margin:0 0 1em;max-width:64ch}
.btn{display:inline-flex;align-items:center;gap:10px;font:600 1rem var(--body);padding:13px 22px;border-radius:6px;border:0;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn-azul{background:var(--cobalto);color:#fff}
.btn-azul:hover{background:#1f399b}
.btn-wa{background:#1f8a4c;color:#fff}
.btn-linea{border:1.5px solid currentColor;background:transparent;color:inherit}

header{border-bottom:1px solid var(--linea);background:var(--yeso);position:sticky;top:0;z-index:10}
header .env{display:flex;align-items:center;gap:24px;height:64px}
.logo{font-family:var(--display);font-size:1.35rem;text-decoration:none;display:flex;align-items:center;gap:10px}
.logo i{width:26px;height:12px;background:var(--cinta);transform:rotate(-8deg);display:block;border-radius:1px}
nav{display:flex;gap:22px;margin-left:auto;font-size:.95rem}
nav a{text-decoration:none;color:var(--suave)}
nav a:hover{color:var(--texto)}
@media (max-width:860px){nav{display:none}header .btn{margin-left:auto;padding:10px 14px}}

/* Portada: pinta tú la pared */
.portada{padding:50px 0 80px}
.portada .env{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
@media (max-width:920px){.portada .env{grid-template-columns:1fr}}
.portada p.entr{font-size:1.15rem;color:var(--suave);margin:22px 0 28px}
.pared-caja{position:relative}
.cinta{position:absolute;height:26px;background:var(--cinta);opacity:.92;box-shadow:0 1px 2px #0002;z-index:2;pointer-events:none}
.cinta.c1{width:140px;top:-10px;left:-18px;transform:rotate(-11deg)}
.cinta.c2{width:120px;bottom:-8px;right:-14px;transform:rotate(-7deg)}
canvas#pared{display:block;width:100%;aspect-ratio:4/3;border-radius:4px;cursor:crosshair;touch-action:none;box-shadow:0 26px 50px -30px #0006;background:#e9e7e1}
.paleta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px}
.paleta button.color{width:38px;height:38px;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 1px var(--linea);cursor:pointer}
.paleta button.color[aria-pressed="true"]{box-shadow:0 0 0 2px var(--carbon)}
.paleta .nombre-color{font-weight:600;margin-left:6px}
.paleta .reiniciar{margin-left:auto;background:none;border:0;color:var(--cobalto);font:600 .95rem var(--body);cursor:pointer;text-decoration:underline}
.progreso{font-size:.92rem;color:var(--suave);margin-top:8px}

section{padding:92px 0}
.cab{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:44px}
.cab p{color:var(--suave);margin:0;font-size:1.06rem}
@media (max-width:820px){.cab{grid-template-columns:1fr;gap:14px}}

/* Calculadora de metros */
.calc{background:var(--carbon);color:#ecebe7}
.calc .cab p{color:#b5b4b0}
.habitaciones{display:grid;gap:12px}
.hab{display:grid;grid-template-columns:1.4fr repeat(3,1fr) auto;gap:10px;align-items:end;background:#2a2b31;border-radius:8px;padding:14px}
.hab label{font-size:.82rem;color:#b5b4b0;display:block;margin-bottom:4px}
.hab input,.hab select{width:100%;padding:10px;border-radius:6px;border:1.5px solid #44454d;background:#1f2025;color:#fff;font:500 1rem var(--body)}
.hab .quitar{background:none;border:0;color:#b5b4b0;font-size:1.4rem;cursor:pointer;padding:6px 8px}
@media (max-width:720px){.hab{grid-template-columns:1fr 1fr}.hab .nombre{grid-column:1/-1}}
.anadir{margin-top:14px;background:none;border:1.5px dashed #5b5c64;color:#ecebe7;border-radius:8px;padding:12px;width:100%;font:600 1rem var(--body);cursor:pointer}
.opciones-calc{display:flex;flex-wrap:wrap;gap:22px;margin:26px 0}
.opciones-calc label{display:flex;gap:8px;align-items:center;cursor:pointer}
.opciones-calc input{accent-color:var(--cinta);width:18px;height:18px}
.resultado{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #44454d}
@media (max-width:720px){.resultado{grid-template-columns:1fr 1fr}}
.resultado div{padding:20px 16px 0 0}
.resultado b{display:block;font-family:var(--display);font-weight:400;font-size:2.4rem;line-height:1;color:var(--cinta)}
.resultado span{color:#b5b4b0;font-size:.95rem}
.nota{color:#9b9a96;font-size:.88rem;margin-top:22px}

/* Gotelé */
.gotele{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media (max-width:860px){.gotele{grid-template-columns:1fr}}
.capas{list-style:none;margin:0;padding:0}
.capas li{display:grid;grid-template-columns:44px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--linea)}
.capas li span{font-family:var(--display);font-size:1.6rem;color:var(--cobalto);line-height:1}
.capas p{margin:4px 0 0;color:var(--suave);font-size:1rem}
.corte svg{width:100%;height:auto;display:block}
.corte-ctrl{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.corte-ctrl button{border:1.5px solid var(--linea);background:#fff;border-radius:999px;padding:8px 14px;font:600 .92rem var(--body);cursor:pointer}
.corte-ctrl button[aria-pressed="true"]{background:var(--carbon);color:#fff;border-color:var(--carbon)}

/* Trabajos */
.trabajos{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--carbon)}
@media (max-width:860px){.trabajos{grid-template-columns:1fr}}
.trabajos div{padding:24px 24px 26px 0;border-bottom:1px solid var(--linea)}
.trabajos p{color:var(--suave);font-size:1rem;margin:6px 0 0}

/* Presupuesto */
.form-sec{background:#e8e6e0}
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px 22px}
.form .ancho{grid-column:1/-1}
@media (max-width:720px){.form{grid-template-columns:1fr}}
.form label{display:block;font-weight:600;margin-bottom:6px}
.form input,.form textarea,.form select{width:100%;font:400 1rem var(--body);padding:13px 14px;border-radius:6px;border:1.5px solid #c9c7c0;background:#fff;color:var(--texto)}
.form textarea{min-height:100px;resize:vertical}
.subida{display:block;border:1.5px dashed #a9a7a0;border-radius:8px;padding:24px;text-align:center;cursor:pointer;background:#f6f5f2}
.subida:hover,.subida.encima{border-color:var(--cobalto)}
.subida input{position:absolute;width:1px;height:1px;opacity:0}
.subida span{display:block;color:var(--suave);font-size:.92rem}
.minis{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:10px;margin-top:12px}
.minis figure{margin:0;position:relative;aspect-ratio:1;border-radius:6px;overflow:hidden}
.minis img{width:100%;height:100%;object-fit:cover}
.minis button{position:absolute;top:4px;right:4px;width:26px;height:26px;border-radius:50%;border:0;background:#000b;color:#fff;cursor:pointer}
.resumen{background:#fff;border-left:3px solid var(--cobalto);padding:12px 16px;border-radius:0 6px 6px 0;color:var(--suave);font-size:.95rem}
.aviso{color:var(--cobalto);min-height:1.4em;margin-top:12px;font-weight:600}

details{border-bottom:1px solid var(--linea);padding:18px 0}
summary{cursor:pointer;font-weight:600;font-size:1.08rem;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::after{content:"+";font-family:var(--display);color:var(--cobalto);font-size:1.5rem;line-height:1}
details[open] summary::after{content:"–"}
details p{color:var(--suave);margin:10px 0 0}
footer{background:var(--carbon);color:#a9a8a4;padding:40px 0;font-size:.92rem}
footer .env{display:flex;flex-wrap:wrap;gap:16px 40px;justify-content:space-between}
.wa-flotante{position:fixed;right:18px;bottom:18px;z-index:20;width:58px;height:58px;border-radius:50%;background:#1f8a4c;display:grid;place-items:center;box-shadow:0 10px 24px -8px #0008}
.wa-flotante svg{width:30px;height:30px;fill:#fff}
.logo{white-space:nowrap}@media (max-width:520px){.portada .btn-linea{margin:12px 0 0!important}header .btn{font-size:.9rem}}

/* ---------- v2 ---------- */
.saltar{position:absolute;left:-999px;top:8px;background:var(--cinta);color:var(--carbon);padding:10px 14px;z-index:50;border-radius:6px}
.saltar:focus{left:8px}
nav a[aria-current="page"]{color:var(--texto);box-shadow:inset 0 -2px 0 var(--cinta)}
.abrir-menu{display:none;margin-left:auto;border:1.5px solid var(--linea);background:#fff;border-radius:6px;padding:8px 14px;font:600 .95rem var(--body);cursor:pointer}
@media (max-width:860px){
  .abrir-menu{display:block}
  header .btn{margin-left:0}
  nav#menu{display:none;position:absolute;top:64px;left:0;right:0;background:var(--yeso);flex-direction:column;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--linea)}
  nav#menu.abierto{display:flex}
  nav#menu a{padding:12px 0;border-bottom:1px solid var(--linea)}
}
@media (max-width:480px){header .btn{display:none}}
footer{padding:54px 0 30px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;width:100%}
@media (max-width:760px){footer .cols{grid-template-columns:1fr}}
footer h4{color:#e9e8e4;margin:0 0 10px;font-family:var(--display);font-weight:400;font-size:1.15rem}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
footer a{color:#e9e8e4;text-decoration:none}
footer .legal{border-top:1px solid #34353b;margin-top:30px;padding-top:16px;width:100%;font-size:.85rem}

.migas{font-size:.88rem;color:var(--suave);margin-bottom:18px;display:block}
.migas ol{list-style:none;margin:0;padding:0;display:flex;gap:6px;flex-wrap:wrap}
.migas li+li::before{content:"/";margin-right:6px}
.portada-int{padding:46px 0 60px;border-bottom:1px solid var(--linea)}
.portada-int .env{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end}
@media (max-width:900px){.portada-int .env{grid-template-columns:1fr}}
.portada-int p.entr{font-size:1.12rem;color:var(--suave);margin:20px 0 24px}
.ficha{border-top:2px solid var(--carbon)}
.ficha div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--linea);font-size:.96rem}
.ficha span{color:var(--suave)}
.ficha b{font-weight:600;text-align:right}

.texto .env,.texto.env{display:grid;grid-template-columns:220px 1fr;gap:48px}
@media (max-width:900px){.texto .env,.texto.env{grid-template-columns:1fr;gap:20px}}
.indice{position:sticky;top:90px;align-self:start;font-size:.95rem;border-left:2px solid var(--cinta);padding-left:16px;display:block}
@media (max-width:900px){.indice{position:static}}
.indice b{display:block;font-family:var(--display);font-weight:400;margin-bottom:8px}
.indice a{display:block;padding:4px 0;color:var(--suave);text-decoration:none}
.cuerpo h2{font-size:clamp(1.7rem,3vw,2.3rem);margin:44px 0 14px}
.cuerpo h2:first-child{margin-top:0}
.cuerpo h3{margin:24px 0 8px}
.tabla-scroll{overflow-x:auto}
.tabla{width:100%;border-collapse:collapse;margin:16px 0;font-size:.95rem;background:#fff;min-width:540px}
.tabla th,.tabla td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--linea);vertical-align:top}
.tabla th{background:var(--carbon);color:#fff;font-weight:600}

/* Sala 3D */
.sala-sec{background:#e8e6e0}
.sala{display:grid;grid-template-columns:1.45fr 1fr;gap:28px;align-items:start}
@media (max-width:980px){.sala{grid-template-columns:1fr}}
.lienzo{position:relative;background:#d9d6cf;border-radius:4px;overflow:hidden;aspect-ratio:4/3}
.lienzo canvas{display:block;width:100%!important;height:100%!important;touch-action:none}
.lienzo .pista{position:absolute;left:12px;bottom:10px;font-size:.82rem;color:#fff;background:#1f2025b0;padding:5px 9px;border-radius:4px;pointer-events:none}
.mandos{display:grid;gap:18px}
.campo label,.campo .tit{display:flex;justify-content:space-between;font-weight:600;font-size:.95rem;margin-bottom:6px}
.campo output{font-weight:500;color:var(--suave)}
input[type=range]{width:100%;accent-color:var(--cobalto)}
.opciones{display:flex;flex-wrap:wrap;gap:8px}
.opciones button{border:1.5px solid var(--linea);background:#fff;border-radius:6px;padding:8px 13px;font:600 .92rem var(--body);cursor:pointer;color:var(--texto)}
.opciones button[aria-pressed="true"]{background:var(--carbon);color:#fff;border-color:var(--carbon)}
.muestras{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}
.muestras button{aspect-ratio:1;border-radius:4px;border:2px solid #fff;box-shadow:0 0 0 1px var(--linea);cursor:pointer;padding:0}
.muestras button[aria-pressed="true"]{box-shadow:0 0 0 2px var(--carbon)}
.lrv{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:center;font-size:.92rem;background:#fff;border-radius:6px;padding:12px 14px}
.lrv .barra{height:8px;border-radius:4px;background:linear-gradient(90deg,#222,#fff);position:relative;border:1px solid var(--linea)}
.lrv .barra i{position:absolute;top:-5px;width:3px;height:16px;background:var(--cobalto);border-radius:2px}
.lrv p{grid-column:1/-1;margin:4px 0 0;color:var(--suave)}
.cifras{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--linea);margin-top:22px}
@media (max-width:720px){.cifras{grid-template-columns:1fr 1fr}}
.cifras div{padding:14px 14px 0 0}
.cifras b{display:block;font-family:var(--display);font-weight:400;font-size:2rem;line-height:1.1}
.cifras span{color:var(--suave);font-size:.9rem}

/* Simulador de relieve */
.simu{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:start}
@media (max-width:920px){.simu{grid-template-columns:1fr}}
.simu canvas{display:block;width:100%;aspect-ratio:4/3;border-radius:4px;background:#ddd;box-shadow:0 20px 40px -28px #0007}
.pasos{list-style:none;margin:0 0 18px;padding:0;display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
@media (max-width:620px){.pasos{grid-template-columns:repeat(4,1fr)}}
.pasos button{width:100%;border:0;border-top:3px solid var(--linea);background:none;text-align:left;padding:8px 2px 4px;font:600 .82rem var(--body);color:var(--suave);cursor:pointer}
.pasos button[aria-current="step"]{border-color:var(--cobalto);color:var(--texto)}
.pasos button.hecho{border-color:var(--carbon)}
.fase h3{font-family:var(--display);font-weight:400;font-size:1.7rem;margin:0 0 8px}
.fase dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:14px 0 0;font-size:.95rem}
.fase dt{color:var(--suave)}
.fase dd{margin:0;font-weight:600}
.avance{display:flex;gap:10px;margin-top:20px}
.prueba{background:#fff;border-radius:6px;padding:18px;margin-top:22px}
.prueba p{margin:8px 0 0;color:var(--suave)}
.mat{background:var(--carbon);color:#ecebe7}
.mat .cab p,.mat .nota{color:#b5b4b0}
.mat .campo label{color:#ecebe7}
.mat .campo output{color:#b5b4b0}
.mat .opciones button{background:#2a2b31;color:#ecebe7;border-color:#44454d}
.mat .opciones button[aria-pressed="true"]{background:var(--cinta);color:var(--carbon);border-color:var(--cinta)}
.mat-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:40px}
@media (max-width:860px){.mat-grid{grid-template-columns:1fr}}
.lista-mat{border-top:1px solid #44454d}
.lista-mat div{display:grid;grid-template-columns:1fr auto;gap:12px;padding:12px 0;border-bottom:1px solid #34353b}
.lista-mat b{font-family:var(--display);font-weight:400;font-size:1.35rem;color:var(--cinta);text-align:right}
.lista-mat small{display:block;color:#9b9a96}