/* Perlita Babidanchi — hoja de estilo única
   Paleta: basalto (roca cruda) → perlita (producto expandido), acento óxido de hierro */

:root{
  --basalt:#12161A;
  --basalt-2:#1B2126;
  --stone:#F6F6F4;
  --paper:#FFFFFF;
  --ink:#12161A;
  --slate:#59616A;
  --faint:#8B939A;
  --line:#E3E4E1;
  --line-dark:#2A3138;
  --accent:#B5533A;
  --accent-deep:#8E3E29;
  --accent-soft:#F5E7E2;

  --sans:"IBM Plex Sans","Helvetica Neue",Arial,sans-serif;
  --serif:"IBM Plex Serif",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono","SF Mono",Menlo,monospace;

  --measure:64ch;
  --pad:clamp(1.25rem,4vw,3rem);
  --gap:clamp(2.5rem,6vw,5rem);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:4.5rem;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;} *{animation:none!important;transition:none!important;}}

body{
  margin:0;background:var(--stone);color:var(--ink);
  font-family:var(--serif);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--accent-deep);text-underline-offset:2px;text-decoration-thickness:1px;}
a:hover{color:var(--accent);}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

.wrap{max-width:74rem;margin:0 auto;padding-inline:var(--pad);}
.narrow{max-width:var(--measure);}

/* ---------- tipografía ---------- */
h1,h2,h3,h4{font-family:var(--sans);font-weight:600;letter-spacing:-.02em;line-height:1.12;margin:0;text-wrap:balance;}
h1{font-size:clamp(2.1rem,5.6vw,3.9rem);font-weight:600;letter-spacing:-.035em;}
h2{font-size:clamp(1.6rem,3.6vw,2.5rem);}
h3{font-size:clamp(1.05rem,1.8vw,1.25rem);}
p{margin:0;}
.lede{font-size:clamp(1.05rem,1.8vw,1.22rem);color:var(--slate);}
.eyebrow{
  font-family:var(--sans);font-size:.72rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);margin:0;
}
.eyebrow.on-dark{color:#D98A70;}

/* ---------- barra superior ---------- */
.topbar{
  position:sticky;top:0;z-index:60;background:rgba(246,246,244,.94);
  backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line);
}
.topbar-in{display:flex;align-items:center;gap:1rem;min-height:4.25rem;}
.brand{display:flex;align-items:baseline;gap:.55rem;text-decoration:none;color:var(--ink);margin-right:auto;}
.brand b{font-family:var(--sans);font-weight:600;font-size:1.02rem;letter-spacing:-.02em;}
.brand span{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);}
.nav{display:flex;align-items:center;gap:1.35rem;}
.nav a{
  font-family:var(--sans);font-size:.86rem;color:var(--slate);text-decoration:none;
  padding:.3rem 0;border-bottom:1px solid transparent;
}
.nav a:hover{color:var(--ink);border-bottom-color:var(--accent);}
.lang{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--line);padding:.34rem .6rem;border-radius:2px;text-decoration:none;color:var(--slate);
}
.lang:hover{border-color:var(--accent);color:var(--accent-deep);}
.burger{
  display:none;background:none;border:1px solid var(--line);border-radius:2px;
  width:2.4rem;height:2.4rem;cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.burger span{display:block;width:1.05rem;height:1.5px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:1.05rem;height:1.5px;background:var(--ink);}
.burger span::before{top:-5px;} .burger span::after{top:5px;}

@media (max-width:900px){
  .burger{display:flex;}
  .nav{
    display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;
    gap:0;padding:.5rem var(--pad) 1rem;
  }
  .nav.open{display:flex;}
  .nav a{padding:.72rem 0;border-bottom:1px solid var(--line);font-size:.95rem;}
  .nav a:last-of-type{border-bottom:none;}
  .nav .lang{border:none;border-radius:0;padding:.72rem 0;font-size:.78rem;letter-spacing:.1em;}
}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--basalt);color:#EDEEEC;overflow:hidden;}
.hero-img{position:absolute;inset:0;}
.hero-img img{width:100%;height:100%;object-fit:cover;opacity:.55;}
.hero-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,22,26,.42) 0%,rgba(18,22,26,.66) 55%,rgba(18,22,26,.93) 100%);
}
.hero-in{position:relative;padding-block:clamp(4.5rem,13vw,9rem) clamp(3rem,8vw,5rem);}
.hero h1{color:#FBFBFA;max-width:18ch;}
.hero .lede{color:#C3C8CC;max-width:52ch;margin-top:1.4rem;}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2.2rem;}
.btn{
  font-family:var(--sans);font-size:.9rem;font-weight:500;text-decoration:none;
  padding:.72rem 1.3rem;border-radius:2px;display:inline-block;transition:background .15s,border-color .15s;
}
.btn-solid{background:var(--accent);color:#fff;border:1px solid var(--accent);}
.btn-solid:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;}
.btn-ghost{background:transparent;color:#EDEEEC;border:1px solid rgba(237,238,236,.35);}
.btn-ghost:hover{border-color:#EDEEEC;color:#fff;}

/* ---------- franja de cifras ---------- */
.figures{background:var(--basalt-2);border-top:1px solid var(--line-dark);}
.figures-in{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(9.5rem,1fr));
  gap:1px;background:var(--line-dark);
}
.fig{background:var(--basalt-2);padding:1.5rem 1.2rem;}
.fig .n{
  font-family:var(--sans);font-weight:600;font-size:1.75rem;letter-spacing:-.03em;
  color:#FBFBFA;display:block;line-height:1;font-variant-numeric:tabular-nums;
}
.fig .n small{font-size:.9rem;font-weight:400;color:#9AA2A9;letter-spacing:0;}
.fig .l{
  font-family:var(--sans);font-size:.73rem;color:#9AA2A9;margin-top:.55rem;display:block;line-height:1.35;
}

/* ---------- secciones ---------- */
.sec{padding-block:var(--gap);border-bottom:1px solid var(--line);}
.sec:last-of-type{border-bottom:none;}
.sec-head{display:flex;flex-direction:column;gap:.7rem;margin-bottom:2.2rem;max-width:var(--measure);}
.sec-body{display:flex;flex-direction:column;gap:1.15rem;}
.sec-body p{max-width:var(--measure);}
.sec.dark{background:var(--basalt);color:#E8EAE8;border-bottom:none;}
.sec.dark h2{color:#FBFBFA;}
.sec.dark .lede,.sec.dark p{color:#B8BEC3;}

/* ---------- destacado legal ---------- */
.claim{
  border-left:3px solid var(--accent);background:var(--paper);
  padding:1.4rem 1.5rem;display:flex;flex-direction:column;gap:.85rem;
}
.claim p{max-width:none;}
.claim .src{font-family:var(--mono);font-size:.76rem;color:var(--faint);line-height:1.5;}

/* ---------- tarjetas ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1px;background:var(--line);border:1px solid var(--line);}
.card{background:var(--paper);padding:1.4rem 1.4rem 1.5rem;display:flex;flex-direction:column;gap:.55rem;}
.card h3{font-size:1.02rem;}
.card p{font-size:.94rem;color:var(--slate);max-width:none;}
.card .tag{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);}

/* ---------- yacimientos ---------- */
.deps{display:grid;grid-template-columns:repeat(auto-fit,minmax(19rem,1fr));gap:1.5rem;}
.dep{background:var(--paper);border:1px solid var(--line);display:flex;flex-direction:column;}
.dep img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.dep .txt{padding:1.25rem 1.35rem 1.5rem;display:flex;flex-direction:column;gap:.5rem;}
.dep h3{font-size:1.12rem;}
.dep p{font-size:.94rem;color:var(--slate);max-width:none;}
.dep dl{margin:.4rem 0 0;display:grid;grid-template-columns:auto 1fr;gap:.3rem .9rem;font-size:.88rem;}
.dep dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);align-self:center;}
.dep dd{margin:0;font-family:var(--sans);font-variant-numeric:tabular-nums;}

/* ---------- tabla ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);background:var(--paper);}
table{border-collapse:collapse;width:100%;font-family:var(--sans);font-size:.92rem;}
th,td{text-align:left;padding:.75rem .95rem;border-bottom:1px solid var(--line);vertical-align:top;}
th{font-size:.7rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);background:var(--stone);white-space:nowrap;}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap;}
tr:last-child td{border-bottom:none;}

/* ---------- lista de evidencia ---------- */
.docs{display:flex;flex-direction:column;gap:1px;background:var(--line);border:1px solid var(--line);}
.doc{background:var(--paper);padding:1.05rem 1.25rem;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.35rem 1.2rem;align-items:baseline;}
.doc h3{font-size:.99rem;grid-column:1;}
.doc p{grid-column:1;font-size:.9rem;color:var(--slate);max-width:none;}
.doc .yr{grid-row:span 2;font-family:var(--mono);font-size:.8rem;color:var(--faint);font-variant-numeric:tabular-nums;}

/* ---------- galería ---------- */
.gal{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:.75rem;}
.gal figure{margin:0;background:var(--paper);border:1px solid var(--line);}
.gal img{aspect-ratio:4/3;object-fit:cover;width:100%;}
.gal figcaption{font-family:var(--sans);font-size:.8rem;color:var(--slate);padding:.6rem .8rem .7rem;}
.gal .wide{grid-column:1/-1;}
.gal .wide img{aspect-ratio:21/9;}

/* ---------- contacto ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(17rem,1fr));gap:1.5rem;align-items:start;}
.contact-card{background:var(--paper);border:1px solid var(--line);padding:1.4rem 1.5rem;display:flex;flex-direction:column;gap:.9rem;}
.contact-card .row{display:flex;flex-direction:column;gap:.15rem;}
.contact-card .k{font-family:var(--mono);font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);}
.contact-card .v{font-family:var(--sans);font-size:.98rem;}
.contact-card .v a{text-decoration:none;}
form{display:flex;flex-direction:column;gap:.85rem;}
label{font-family:var(--sans);font-size:.8rem;font-weight:500;display:flex;flex-direction:column;gap:.3rem;}
input,textarea,select{
  font-family:var(--sans);font-size:.94rem;padding:.62rem .75rem;
  border:1px solid var(--line);border-radius:2px;background:var(--paper);color:var(--ink);width:100%;
}
input:focus,textarea:focus,select:focus{border-color:var(--accent);outline:none;}
textarea{min-height:6.5rem;resize:vertical;}
button[type=submit]{
  font-family:var(--sans);font-size:.9rem;font-weight:500;background:var(--accent);color:#fff;
  border:1px solid var(--accent);border-radius:2px;padding:.72rem 1.3rem;cursor:pointer;align-self:flex-start;
}
button[type=submit]:hover{background:var(--accent-deep);border-color:var(--accent-deep);}
.form-note{font-family:var(--sans);font-size:.78rem;color:var(--faint);}

/* ---------- pie ---------- */
.foot{background:var(--basalt);color:#9AA2A9;padding-block:2.5rem 3rem;}
.foot-in{display:flex;flex-wrap:wrap;gap:1.5rem 2.5rem;align-items:baseline;}
.foot p{font-family:var(--sans);font-size:.82rem;margin:0;}
.foot a{color:#C3C8CC;}
.foot .sep{margin-inline:auto;}

/* ---------- utilidades ---------- */
.skip{
  position:absolute;left:-9999px;background:var(--accent);color:#fff;padding:.6rem 1rem;
  font-family:var(--sans);font-size:.85rem;z-index:100;
}
.skip:focus{left:.5rem;top:.5rem;}
.note{font-family:var(--sans);font-size:.82rem;color:var(--faint);max-width:var(--measure);}

/* ---------- añadidos: v2 ---------- */
.sec.alt{background:var(--paper);}
.hero h1{max-width:20ch;}

.two-col{display:grid;grid-template-columns:repeat(auto-fit,minmax(19rem,1fr));gap:1.6rem 2.5rem;}
.two-col > div{display:flex;flex-direction:column;gap:.6rem;}
.two-col p{max-width:46ch;}

.fig-wide{margin:2rem 0 0;background:var(--paper);border:1px solid var(--line);}
.fig-wide img{width:100%;aspect-ratio:21/9;object-fit:cover;display:block;}
.fig-wide figcaption{font-family:var(--sans);font-size:.82rem;color:var(--slate);padding:.65rem .9rem .75rem;}

.mapfig{margin:0 0 2rem;background:var(--paper);border:1px solid var(--line);}
.mapfig img{width:100%;height:auto;display:block;}
.mapfig figcaption{font-family:var(--sans);font-size:.8rem;color:var(--slate);padding:.65rem .9rem .75rem;border-top:1px solid var(--line);}

.cards.three{grid-template-columns:repeat(3,minmax(0,1fr));}
.cards.four{grid-template-columns:repeat(4,minmax(0,1fr));}
@media (max-width:1000px){
  .cards.three,.cards.four{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:620px){
  .cards.three,.cards.four{grid-template-columns:minmax(0,1fr);}
}
.card.pad{padding:1.5rem 1.5rem 1.7rem;}
.card .big-num{
  font-family:var(--sans);font-weight:600;font-size:2.6rem;letter-spacing:-.035em;
  color:var(--accent);line-height:1;margin:.3rem 0 .2rem;font-variant-numeric:tabular-nums;
}

.bars{display:flex;flex-direction:column;gap:.55rem;margin:.6rem 0 .3rem;}
.bar{display:grid;grid-template-columns:7.5rem 1fr auto;gap:.7rem;align-items:center;}
.bar .bl{font-family:var(--sans);font-size:.82rem;color:var(--slate);}
.bar .bt{height:.55rem;background:var(--accent-soft);position:relative;border-radius:1px;}
.bar .bt::before{content:"";position:absolute;inset:0 auto 0 0;width:var(--w);background:var(--accent);border-radius:1px;}
.bar .bv{font-family:var(--mono);font-size:.78rem;color:var(--faint);font-variant-numeric:tabular-nums;}

caption{
  caption-side:top;text-align:left;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--faint);padding:.8rem .95rem .2rem;
}

a.doc{text-decoration:none;color:inherit;transition:background .15s;}
a.doc:hover{background:var(--accent-soft);}
a.doc h3{color:var(--accent-deep);}
.doc .ext{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;color:var(--faint);
  border:1px solid var(--line);padding:.1rem .3rem;border-radius:2px;vertical-align:.12em;margin-left:.45rem;
}
a.doc:hover .ext{border-color:var(--accent);color:var(--accent-deep);}

.wide-card{max-width:44rem;}
.contact-card .row{flex-direction:row;align-items:baseline;gap:1rem;flex-wrap:wrap;}
.contact-card .k{min-width:6rem;}

.src{font-family:var(--mono);font-size:.76rem;color:var(--faint);line-height:1.55;max-width:var(--measure);}
.sec.dark .src{color:#8B939A;}

@media (max-width:560px){
  .bar{grid-template-columns:6rem 1fr auto;}
  .contact-card .row{flex-direction:column;gap:.15rem;}
}

.btn-line{background:var(--paper);color:var(--accent-deep);border:1px solid var(--line);}
.btn-line:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}
.btn-line .ext{margin-left:.4rem;}

.btn-ghost .ext{margin-left:.4rem;border-color:rgba(237,238,236,.3);color:#B8BEC3;}
.btn-ghost:hover .ext{border-color:rgba(237,238,236,.6);color:#EDEEEC;}