/* Katrantu — hoja de estilos común */

:root{
  --bg:#eeece6;
  --bg-alt:#dedbd2;
  --bg-dark:#1b2430;
  --ink:#1a1a18;
  --ink-soft:#6d6a62;
  --ink-inv:#eeece6;
  --accent:#2a4f78;
  --accent2:#9a6a1c;
  --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(--ink);
  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}
a:hover{text-decoration-thickness:2px}
a:focus-visible,
button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.wrap{max-width:1180px;margin:0 auto;padding:0 28px}

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

/* ---- tramos de columnas ---- */
.c4{grid-column:1 / span 4}
.c5{grid-column:1 / span 5}
.c6{grid-column:1 / span 6}
.c7{grid-column:1 / span 7}
.c8{grid-column:1 / span 8}
.c9{grid-column:1 / span 9}
.c12{grid-column:1 / span 12}
.side{grid-column:9 / span 4}

/* ---- tipografía ---- */
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.05;margin:0}
h1{font-size:clamp(2.3rem,5.4vw,3.9rem);letter-spacing:-0.01em}
h2{font-size:clamp(1.5rem,2.9vw,2.05rem);margin-bottom:20px}
h3{font-size:1.18rem;line-height:1.2;margin:34px 0 12px}
p{margin:0 0 20px}
.lead{font-size:1.12rem;line-height:1.75}
.cap{font-family:var(--sans);font-size:13px;line-height:1.6;color:var(--ink-soft)}
.num{font-family:var(--sans);font-size:13px;letter-spacing:.12em;color:var(--accent2)}
strong{font-weight:600}

/* ---- ritmo vertical ---- */
.r72{padding:72px 0}
.r88{padding:88px 0}
.r104{padding:104px 0}
.alt{background:var(--bg-alt)}

/* ---- separador doble ---- */
.sep{margin:0 0 30px}
.sep::before{content:"";display:block;height:1px;background:#c3bfb3}
.sep::after{content:"";display:block;height:3px;width:16.6%;min-width:110px;background:var(--accent);margin-top:5px}

/* ---- cabecera ---- */
.site-head{border-bottom:1px solid #c3bfb3;background:var(--bg)}
.site-head .inner{
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:14px 28px;padding:20px 0;
}
.brand{
  font-family:var(--serif);font-size:1.45rem;line-height:1;
  color:var(--ink);text-decoration:none;letter-spacing:.01em;
}
.brand span{display:block;font-family:var(--sans);font-size:12px;color:var(--ink-soft);letter-spacing:.1em;margin-top:6px}
.site-nav{margin-left:auto}
.site-nav ul{display:flex;flex-wrap:wrap;gap:8px 22px;list-style:none;margin:0;padding:0}
.site-nav a{font-size:15px;color:var(--ink);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(--accent2);color:var(--ink)}

/* ---- hero con línea de cota ---- */
.hero{padding:76px 0 64px}
.hero-inner{position:relative;padding-left:34px}
.rule-v{
  position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--accent);
}
.rule-v::before,.rule-v::after{
  content:"";position:absolute;left:-6px;width:13px;height:1px;background:var(--accent);
}
.rule-v::before{top:0}
.rule-v::after{bottom:0}

.hero h1{grid-column:1 / span 8}
.hero h1 .l2{display:block;margin-left:8.33%}

.dim{
  grid-column:1 / span 8;
  display:flex;align-items:center;gap:14px;
  margin:30px 0 26px;
}
.dim .bar{position:relative;flex:1;height:1px;background:var(--accent2)}
.dim .bar::before,.dim .bar::after{
  content:"";position:absolute;top:-4px;width:1px;height:9px;background:var(--accent2);
}
.dim .bar::before{left:0}
.dim .bar::after{right:0}
.dim .tag{font-size:13px;letter-spacing:.14em;color:var(--accent2);white-space:nowrap;text-transform:none}

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

/* ---- figura principal ---- */
.fig-main{margin:0;padding-bottom:96px}
.fig-main img{grid-column:1 / span 7;width:100%}
.fig-main figcaption{
  grid-column:9 / span 4;position:relative;align-self:end;padding-bottom:6px;
}
.fig-main figcaption::before{
  content:"";position:absolute;left:-34px;top:11px;width:28px;height:1px;background:var(--accent2);
}

/* ---- listas ---- */
ul.list,ol.list{padding-left:0;margin:0 0 24px;list-style:none}
ul.list li,ol.list li{position:relative;padding-left:26px;margin-bottom:12px}
ul.list li::before{
  content:"";position:absolute;left:0;top:.72em;width:11px;height:2px;background:var(--accent);
}
ol.list{counter-reset:it}
ol.list li{counter-increment:it}
ol.list li::before{
  content:counter(it,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:13px;color:var(--accent2);letter-spacing:.06em;
}
dl.defs{margin:0}
dl.defs dt{font-family:var(--serif);font-size:1.1rem;margin-top:26px}
dl.defs dd{margin:6px 0 0}

/* ---- sección oscura ---- */
.dark{background:var(--bg-dark);color:var(--ink-inv)}
.dark h2,.dark h3{color:var(--ink-inv)}
.dark .cap{color:#a9b0bb}
.dark .num{color:#c79a4d}
.dark a{color:#9dbbdd}
.dark .sep::before{background:#3a4553}
.dark .sep::after{background:#9dbbdd}
.dark ul.list li::before{background:#9dbbdd}
.dark dl.defs dt{color:var(--ink-inv)}

.dark-grid{row-gap:44px}
.fig-detail{margin:0;grid-column:8 / span 5}
.fig-detail img{width:100%}
.fig-detail figcaption{margin-top:12px}
.dark-text{grid-column:1 / span 6}

/* ---- composición de "Sobre el proyecto" ---- */
.about-body{position:relative;padding-left:30px}
.about-body::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:1px;background:var(--accent);
}
.about-body section{position:relative;margin-bottom:46px}
.about-body section::before{
  content:"";position:absolute;left:-30px;top:.9em;width:18px;height:1px;background:var(--accent2);
}
.about-body section:last-child{margin-bottom:0}

/* ---- páginas legales ---- */
.doc h2{margin-top:52px}
.doc h2:first-of-type{margin-top:0}
.doc .updated{font-size:13px;color:var(--ink-soft);margin-bottom:38px}

/* ---- pie ---- */
.site-foot{background:var(--bg-alt);padding:56px 0 26px;margin-top:0}
.foot-rule{height:1px;background:#c3bfb3}
.foot-rule + .foot-rule{height:3px;background:var(--accent);width:16.6%;min-width:110px;margin-top:5px}
.foot-grid{display:grid;grid-template-columns:repeat(12,1fr);column-gap:24px;row-gap:32px;padding:40px 0 34px}
.foot-brand{grid-column:1 / span 5}
.foot-brand .n{font-family:var(--serif);font-size:1.9rem;line-height:1.1;margin:0 0 10px}
.foot-brand p{font-size:14px;color:var(--ink-soft);margin:0;max-width:34ch}
.foot-col:nth-of-type(1){grid-column:7 / span 3}
.foot-col:nth-of-type(2){grid-column:10 / span 3}
.foot-col h2{font-family:var(--sans);font-size:13px;letter-spacing:.12em;color:var(--accent2);margin:0 0 14px;line-height:1.4}
.foot-col ul{list-style:none;margin:0;padding:0}
.foot-col li{margin-bottom:9px}
.foot-col a{font-size:15px;color:var(--ink);text-decoration:none;border-bottom:1px solid transparent}
.foot-col a:hover{border-bottom-color:var(--accent);color:var(--accent)}
.foot-bottom{border-top:1px solid #c3bfb3;padding-top:18px;font-size:13px;color:var(--ink-soft)}

/* ---- adaptación ---- */
@media (max-width:900px){
  .fig-main figcaption{grid-column:9 / span 4}
  .dark-text{grid-column:1 / span 7}
  .fig-detail{grid-column:8 / span 5}
}

@media (max-width:760px){
  body{font-size:16px;line-height:1.75}
  .wrap{padding:0 20px}
  .r72{padding:48px 0}
  .r88{padding:52px 0}
  .r104{padding:56px 0}
  .hero{padding:44px 0 40px}
  .hero-inner{padding-left:22px}
  .hero h1 .l2{margin-left:0}
  .c4,.c5,.c6,.c7,.c8,.c9,.c12,.side,
  .hero h1,.dim,.hero .intro,
  .fig-main img,.fig-main figcaption,
  .fig-detail,.dark-text{grid-column:1 / span 12}
  .fig-main{padding-bottom:52px}
  .fig-main figcaption{margin-top:14px;padding-left:0}
  .fig-main figcaption::before{left:0;top:-8px;width:44px}
  .fig-detail{max-width:420px}
  .foot-grid{row-gap:26px}
  .foot-brand,.foot-col,
  .foot-col:nth-of-type(1),.foot-col:nth-of-type(2){grid-column:1 / span 12}
  .site-nav{margin-left:0;width:100%}
  .site-nav ul{gap:6px 18px}
  .about-body{padding-left:20px}
  .about-body section::before{left:-20px;width:12px}
}