/* Brorano — hoja de estilos común */

:root{
  --bg:#e8e6e1;
  --bg-alt:#d3d0c9;
  --bg-dark:#2a2a28;
  --ink:#17171a;
  --ink-2:#6a6862;
  --ink-inv:#e8e6e1;
  --accent:#8c4a2f;
  --accent-2:#55707a;
  --rhythm:76px;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --serif:Georgia,'Times New Roman',serif;
}

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

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--serif);
  font-size:18px;
  line-height:1.7;
  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;}

h1,h2,h3{
  font-family:var(--sans);
  font-weight:800;
  letter-spacing:-.02em;
  margin:0;
}

p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}

/* ---------- retícula ---------- */

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:24px;
  max-width:1180px;
  margin:0 auto;
  padding:0 28px;
}

.col-text{grid-column:2 / 8;}
.col-lead{grid-column:2 / 10;}
.col-wide{grid-column:2 / 12;}

/* ---------- cabecera y navegación ---------- */

.site-head{
  border-bottom:1px solid rgba(23,23,26,.22);
  background:var(--bg);
}
.site-head .grid{
  align-items:baseline;
  row-gap:10px;
  padding-top:20px;
  padding-bottom:18px;
}
.brand{
  grid-column:1 / 5;
  font-family:var(--sans);
  font-weight:800;
  font-size:1.25rem;
  letter-spacing:-.02em;
  color:var(--ink);
  text-decoration:none;
}
.brand span{display:block;font-family:var(--serif);font-weight:400;font-size:.78rem;letter-spacing:0;color:var(--ink-2);line-height:1.4;margin-top:2px;}
.site-nav{grid-column:5 / 13;}
.site-nav ul{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;gap:6px 20px;
  justify-content:flex-end;
  font-family:var(--sans);
  font-size:.86rem;
  letter-spacing:0;
}
.site-nav a{color:var(--ink);text-decoration:none;border-bottom:1px solid transparent;padding-bottom:2px;}
.site-nav a:hover,.site-nav a[aria-current="page"]{border-bottom-color:var(--accent);color:var(--accent);}

/* ---------- portada ---------- */

.hero{padding:calc(var(--rhythm) * .9) 0 var(--rhythm);}
.hero .grid{row-gap:26px;}

.spine{
  grid-column:1 / 2;
  grid-row:1 / span 3;
  min-height:220px;
  border-left:1px solid rgba(23,23,26,.35);
  padding-left:6px;
}
.spine i{
  display:block;
  height:100%;
  min-height:220px;
  background-image:repeating-linear-gradient(to bottom,var(--accent) 0 2px,transparent 2px 15px);
  background-repeat:no-repeat;
  background-size:26px 100%;
}

.hero h1{
  grid-column:2 / 12;
  grid-row:1;
  font-size:clamp(2.3rem,6.4vw,4.4rem);
  line-height:.98;
  letter-spacing:-.035em;
}
.rule-double{
  grid-column:2 / 12;
  grid-row:2;
  height:5px;
  border-top:3px solid var(--ink);
  border-bottom:1px solid var(--ink);
}
.hero-sub{grid-column:2 / 8;grid-row:3;font-size:1.09rem;color:var(--ink);}

/* ---------- secciones ---------- */

.band{padding:var(--rhythm) 0;}
.band--alt{background:var(--bg-alt);}
.band--dark{background:var(--bg-dark);color:var(--ink-inv);}
.band--dark h2,.band--dark h3{color:var(--ink-inv);}
.band--dark .rubric{color:rgba(232,230,225,.72);border-bottom-color:rgba(232,230,225,.3);}
.band--dark .rubric b{color:#8fa8b0;}
.band--dark a{color:var(--ink-inv);}
.band--dark :focus-visible{outline-color:var(--ink-inv);}
.band--dark figcaption{color:rgba(232,230,225,.68);}

.rubric{
  grid-column:1 / 13;
  font-family:var(--sans);
  font-size:.76rem;
  letter-spacing:.01em;
  color:var(--ink-2);
  border-bottom:1px solid rgba(23,23,26,.28);
  padding-bottom:6px;
  margin-bottom:26px;
}
.rubric b{color:var(--accent-2);font-weight:700;margin-right:10px;}

h2{
  grid-column:2 / 11;
  font-size:clamp(1.5rem,3.1vw,2.05rem);
  line-height:1.1;
  margin-bottom:18px;
}
h3{
  font-size:1.07rem;
  line-height:1.3;
  margin:1.6em 0 .5em;
}

.lead{font-size:1.16rem;line-height:1.6;}

/* ---------- imágenes ---------- */

.fig-main{
  grid-column:7 / 13;
  margin:0;
}
.fig-main img{width:100%;}
.fig-main figcaption,.fig-detail figcaption{
  font-family:var(--sans);
  font-size:.76rem;
  line-height:1.5;
  color:var(--ink-2);
  text-align:left;
  margin-top:10px;
  max-width:46ch;
}
.fig-side{grid-column:2 / 7;align-self:center;}

.fig-detail{grid-column:8 / 13;grid-row:3;margin:0;}
.fig-detail img{width:100%;}
.dark-text{grid-column:2 / 8;grid-row:3;}

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

ul.marks,ol.steps{margin:0 0 1.1em;padding:0;list-style:none;}
ul.marks li{position:relative;padding-left:22px;margin-bottom:.55em;}
ul.marks li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:12px;height:2px;background:var(--accent);
}
ol.steps{counter-reset:st;}
ol.steps li{position:relative;padding-left:34px;margin-bottom:.7em;counter-increment:st;}
ol.steps li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:0;top:.16em;
  font-family:var(--sans);font-size:.8rem;font-weight:700;color:var(--accent-2);
}
.band--dark ul.marks li::before{background:#8fa8b0;}

/* ---------- separador tipográfico ---------- */

.sep{
  grid-column:1 / 13;
  display:flex;justify-content:center;gap:9px;
  margin:calc(var(--rhythm) * .55) 0;
}
.sep i{display:block;width:16px;height:2px;background:var(--accent);}

/* ---------- letra capital (El proyecto) ---------- */

.dropcap::first-letter{
  float:left;
  font-family:var(--sans);
  font-weight:800;
  font-size:4.1rem;
  line-height:.82;
  color:var(--accent);
  margin:.06em .14em 0 0;
}

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

.site-foot{
  background:var(--bg);
  border-top:1px solid rgba(23,23,26,.22);
  padding:calc(var(--rhythm) * .7) 0;
  text-align:center;
}
.site-foot .inner{
  grid-column:2 / 12;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.foot-name{font-family:var(--sans);font-weight:800;font-size:1.15rem;letter-spacing:-.02em;}
.foot-nav ul{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;justify-content:center;
  font-family:var(--sans);font-size:.85rem;
}
.foot-nav li+li{border-left:1px solid rgba(23,23,26,.3);}
.foot-nav a{display:inline-block;padding:0 14px;color:var(--ink);text-decoration:none;}
.foot-nav a:hover{color:var(--accent);text-decoration:underline;}
.foot-note{font-size:.88rem;color:var(--ink-2);max-width:56ch;}

/* ---------- tablet ---------- */

@media (max-width:900px){
  :root{--rhythm:56px;}
  .grid{column-gap:18px;padding:0 22px;}
  .col-text,.col-lead,.col-wide,h2,.hero h1,.rule-double,.hero-sub{grid-column:2 / 13;}
  .fig-main,.fig-detail{grid-column:2 / 13;}
  .fig-side,.dark-text{grid-column:2 / 13;}
  .dark-text{grid-row:3;}
  .fig-detail{grid-row:4;}
  .fig-detail{max-width:460px;}
  .fig-main{margin-top:8px;}
  .site-foot .inner{grid-column:1 / 13;}
}

/* ---------- móvil ---------- */

@media (max-width:640px){
  :root{--rhythm:46px;}
  body{font-size:17px;}
  .grid{padding:0 18px;column-gap:0;}
  .brand{grid-column:1 / 13;}
  .site-nav{grid-column:1 / 13;}
  .site-nav ul{justify-content:flex-start;gap:8px 16px;}
  .rubric,.sep{grid-column:1 / 13;}
  .col-text,.col-lead,.col-wide,h2,.hero h1,.rule-double,.hero-sub,
  .fig-main,.fig-detail,.fig-side,.dark-text{grid-column:1 / 13;}
  .hero h1{grid-row:2;}
  .rule-double{grid-row:3;}
  .hero-sub{grid-row:4;}
  .spine{
    grid-column:1 / 13;grid-row:1;
    min-height:0;border-left:0;padding-left:0;
    border-top:1px solid rgba(23,23,26,.35);padding-top:8px;
  }
  .spine i{
    min-height:0;height:14px;
    background-image:repeating-linear-gradient(to right,var(--accent) 0 2px,transparent 2px 15px);
    background-size:100% 100%;
  }
  .hero h1{font-size:2.15rem;letter-spacing:-.025em;}
  .lead{font-size:1.08rem;}
  .dropcap::first-letter{font-size:3.2rem;}
}