/* Nestara — hoja de estilos común */

:root{
  --bg:#eceff1;
  --bg-alt:#dde3e7;
  --bg-dark:#1f2a33;
  --text:#151c22;
  --muted:#606d78;
  --on-dark:#eceff1;
  --accent:#a2472c;
  --accent2:#3f6b86;
  --hair:#c3ccd2;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block;}

a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration-thickness:2px;}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* ---------- rejilla ---------- */

.wrap{max-width:1200px;margin:0 auto;padding:0 32px;}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:24px;
  row-gap:0;
}

.col-6{grid-column:1 / span 6;}
.col-7{grid-column:1 / span 7;}
.col-8{grid-column:1 / span 8;}
.col-9{grid-column:1 / span 9;}
.col-full{grid-column:1 / -1;}

/* ---------- ritmo de secciones ---------- */

.r1{padding:72px 0;}
.r2{padding:88px 0;}
.r3{padding:104px 0;}

.band-alt{background:var(--bg-alt);}
.band-dark{background:var(--bg-dark);color:var(--on-dark);}
.band-dark .cap,.band-dark .sec-num{color:#9db4c4;}
.band-dark a{color:#e6b9a8;}

/* ---------- tipografía ---------- */

h1,h2,h3{font-family:var(--serif);font-weight:400;margin:0;letter-spacing:-0.01em;}

h1{font-size:clamp(34px,5.4vw,58px);line-height:1.05;}
h2{font-size:clamp(25px,3vw,34px);line-height:1.12;margin-bottom:18px;}
h3{font-size:20px;line-height:1.25;margin:34px 0 10px;}

p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}

.lead{font-size:19px;line-height:1.7;}

.cap{
  font-family:var(--sans);
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
  letter-spacing:0.01em;
}

.sec-num{
  display:block;
  font-size:13px;
  line-height:1.4;
  letter-spacing:0.09em;
  color:var(--accent2);
  margin-bottom:14px;
}

.muted{color:var(--muted);}

/* ---------- separador doble ---------- */

.sep{grid-column:1 / -1;margin:0 0 34px;}
.sep::before{content:"";display:block;height:1px;background:var(--hair);}
.sep::after{content:"";display:block;height:3px;width:16.6%;background:var(--accent);margin-top:7px;}
.band-dark .sep::before{background:#38464f;}

.sep-foot{margin-bottom:0;}

/* ---------- cabecera ---------- */

.site-header{border-bottom:1px solid var(--hair);}
.site-header .wrap{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px 28px;
  padding-top:20px;
  padding-bottom:18px;
}
.brand{
  font-family:var(--serif);
  font-size:23px;
  letter-spacing:0.02em;
  color:var(--text);
  text-decoration:none;
}
.brand:hover{text-decoration:none;color:var(--accent);}
.site-nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px 24px;margin:0;padding:0;}
.site-nav a{
  font-size:15px;
  color:var(--text);
  text-decoration:none;
  padding-bottom:3px;
  border-bottom:1px solid transparent;
}
.site-nav a:hover{border-bottom-color:var(--accent);color:var(--accent);}
.site-nav a[aria-current="page"]{border-bottom-color:var(--accent);}

/* ---------- hero ---------- */

.hero{padding:78px 0 0;}
.hero-inner{position:relative;padding-left:36px;}

.dim-v{position:absolute;left:0;top:8px;bottom:10px;width:1px;background:var(--accent2);}
.dim-v::before,.dim-v::after{
  content:"";position:absolute;left:-6px;width:13px;height:1px;background:var(--accent2);
}
.dim-v::before{top:0;}
.dim-v::after{bottom:0;}

.hero h1 .l2{display:block;margin-left:12.5%;}

.dim-h{
  grid-column:1 / span 8;
  display:flex;
  align-items:center;
  gap:14px;
  margin:30px 0 26px;
  color:var(--accent2);
}
.dim-h .rule{flex:1 1 auto;height:1px;background:currentColor;position:relative;min-width:18px;}
.dim-h .rule::before,.dim-h .rule::after{
  content:"";position:absolute;top:-4px;height:9px;width:1px;background:currentColor;
}
.dim-h .rule::before{left:0;}
.dim-h .rule::after{right:0;}
.dim-h .label{flex:0 1 auto;font-size:13px;letter-spacing:0.05em;}

.hero-intro{grid-column:1 / span 6;}

/* ---------- figura principal ---------- */

.figure-main{grid-column:1 / span 7;margin:0;}
.figure-main img{width:100%;}
.figure-note{
  grid-column:9 / span 4;
  align-self:center;
  position:relative;
  margin:0;
}
.figure-note::before{
  content:"";position:absolute;left:-72px;top:11px;width:72px;height:1px;background:var(--accent2);
}

/* ---------- listas ---------- */

ul.check,ul.plain{list-style:none;margin:0 0 20px;padding:0;}
ul.check li,ul.plain li{position:relative;padding-left:22px;margin-bottom:10px;}
ul.check li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:2px;background:var(--accent);
}
ul.plain li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:1px;background:var(--accent2);
}
ol.steps{margin:0 0 20px;padding-left:22px;}
ol.steps li{margin-bottom:10px;padding-left:6px;}
ol.steps li::marker{color:var(--accent2);font-size:14px;}

/* ---------- bloque oscuro con imagen de detalle ---------- */

.detail-fig{grid-column:1 / span 4;margin:0;}
.detail-fig img{width:100%;}
.detail-fig figcaption{margin-top:12px;}
.detail-text{grid-column:6 / span 7;}

/* ---------- sobre el proyecto ---------- */

.about-rail{
  grid-column:1 / span 7;
  border-left:1px solid var(--accent2);
  padding-left:30px;
}
.about-block{position:relative;margin-bottom:44px;}
.about-block:last-child{margin-bottom:0;}
.about-block::before{
  content:"";position:absolute;left:-30px;top:14px;width:17px;height:1px;background:var(--accent);
}

/* ---------- páginas legales ---------- */

.doc{grid-column:1 / span 9;}
.doc h2{margin-top:46px;}
.doc h2:first-of-type{margin-top:0;}

.aside-note{grid-column:1 / span 9;margin-top:44px;padding-top:18px;border-top:1px solid var(--hair);}

/* ---------- pie ---------- */

.site-footer{background:var(--bg);padding:64px 0 34px;}
.site-footer .foot-grid{margin-top:34px;}
.foot-brand{grid-column:1 / span 5;}
.foot-brand .name{font-family:var(--serif);font-size:30px;line-height:1.1;}
.foot-brand p{margin-top:14px;}
.foot-nav{grid-column:7 / span 3;}
.foot-contact{grid-column:10 / span 3;}
.foot-h{
  font-size:13px;letter-spacing:0.09em;color:var(--accent2);margin:0 0 12px;font-weight:400;
  font-family:var(--sans);
}
.foot-nav ul{list-style:none;margin:0;padding:0;}
.foot-nav li{margin-bottom:8px;}
.foot-nav a{color:var(--text);text-decoration:none;border-bottom:1px solid transparent;}
.foot-nav a:hover{border-bottom-color:var(--accent);color:var(--accent);}
.foot-bottom{
  margin-top:52px;border-top:1px solid var(--hair);padding-top:16px;
}

/* ---------- adaptación ---------- */

@media (max-width:1000px){
  .figure-main{grid-column:1 / span 8;}
  .figure-note{grid-column:9 / span 4;}
  .figure-note::before{left:-24px;width:24px;}
  .detail-text{grid-column:6 / span 7;}
  .doc,.about-rail{grid-column:1 / span 10;}
}

@media (max-width:860px){
  body{font-size:16px;}
  .wrap{padding:0 22px;}
  .grid{column-gap:18px;}
  .r1,.r2,.r3{padding:52px 0;}
  .hero{padding:44px 0 0;}
  .hero-inner{padding-left:24px;}
  .hero h1 .l2{margin-left:8%;}
  .dim-h{margin:22px 0 20px;}
  .col-6,.col-7,.col-8,.col-9,
  .hero-intro,.dim-h,
  .figure-main,.figure-note,
  .detail-fig,.detail-text,
  .about-rail,.doc,.aside-note,
  .foot-brand,.foot-nav,.foot-contact{grid-column:1 / -1;}
  .figure-note{margin-top:18px;}
  .figure-note::before{position:static;display:block;width:56px;height:1px;margin-bottom:12px;}
  .detail-fig{max-width:420px;margin-bottom:30px;}
  .detail-text{margin-top:0;}
  .sep::after{width:38%;}
  .foot-nav,.foot-contact{margin-top:34px;}
  .foot-bottom{margin-top:38px;}
  .site-footer{padding:48px 0 28px;}
}

@media (max-width:520px){
  .site-header .wrap{flex-direction:column;align-items:flex-start;}
  .site-nav ul{gap:6px 18px;}
  .dim-h{flex-wrap:wrap;}
  .dim-h .label{order:-1;flex:1 0 100%;}
}