/* ==========================================================================
   Concepción Alta — sunbelt.com
   Design system derived from the Concepción Alta brand kit.
   Palette: Umbra / Caliza / Arena / Barro / Salvia / Piedra
   Type: Zilla Slab (display, Clarendon substitute) + Inter (text)
   ========================================================================== */

:root{
  --umbra:#2B2620;   /* primary ink / dark surfaces */
  --caliza:#F4EEE5;  /* light surface */
  --arena:#C9B79F;   /* warm neutral */
  --barro:#A96E48;   /* accent — "alta", links, CTAs, rules */
  --salvia:#7C7E63;  /* natural secondary */
  --piedra:#6E665A;  /* muted / functional */
  --caliza-2:#EFE9DF;/* slightly deeper surface for alt sections */
  --card:#FBF8F2;
  --line:rgba(43,38,32,.16);
  --ff:'Zilla Slab', Georgia, serif;
  --fi:'Inter', system-ui, -apple-system, sans-serif;
  --wrap:1180px;
  --gut:clamp(20px,5vw,64px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--fi);color:var(--umbra);background:var(--caliza);
  line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---- language toggle visibility ---- */
html[data-lang="en"] .es{display:none !important}
html[data-lang="es"] .en{display:none !important}

/* ---- layout ---- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.section{padding:clamp(64px,10vw,140px) 0}
.section--tint{background:var(--caliza-2)}
.section--arena{background:var(--arena)}
.dark{background:var(--umbra);color:var(--caliza)}
.dark .muted{color:#cdc0ad}
.dark .eyebrow{color:var(--arena)}
.dark a.link{color:var(--arena)}

/* ---- type ---- */
.disp{font-family:var(--ff);font-weight:300;line-height:1.06;letter-spacing:.005em}
h1.disp{font-size:clamp(38px,6.4vw,84px)}
h2.disp{font-size:clamp(30px,4.4vw,52px);margin:0 0 .3em}
h3.disp{font-size:clamp(21px,2.6vw,28px);margin:0 0 .4em}
.eyebrow{font-family:var(--fi);font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:var(--piedra);font-weight:500;margin:0 0 18px}
.lead{font-family:var(--ff);font-weight:300;font-size:clamp(19px,2.6vw,27px);line-height:1.4}
.it{font-style:italic}
.barro{color:var(--barro)}
.muted{color:#5b554c}
.rule{width:48px;height:1px;background:var(--barro);border:0;margin:20px 0}
.rule.center{margin-left:auto;margin-right:auto}
.center{text-align:center}
p{margin:0 0 1.1em}
.small{font-size:13.5px;color:#5b554c}

/* wordmark */
.wm{font-family:var(--ff);font-weight:300;letter-spacing:.26em;font-size:19px;white-space:nowrap;text-transform:lowercase}
.wm .a{color:var(--barro)}
.wm.big{font-size:clamp(26px,4vw,40px);letter-spacing:.28em}

/* emblem */
.em{display:inline-block;line-height:0}
.em svg{display:block}

/* ---- header ---- */
header.bar{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gut);
  transition:background .35s ease, padding .35s ease, box-shadow .35s ease;
  color:var(--caliza);
}
header.bar .brand{display:flex;align-items:center;gap:12px;color:inherit}
header.bar .brand .em svg{width:26px;height:26px}
header.bar nav{display:flex;align-items:center;gap:clamp(14px,2vw,30px)}
header.bar nav a.navlink{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:inherit;opacity:.82;transition:opacity .2s}
header.bar nav a.navlink:hover{opacity:1}
header.bar.scrolled{background:var(--caliza);color:var(--umbra);box-shadow:0 1px 0 var(--line);padding-top:12px;padding-bottom:12px}
header.bar.solid{background:var(--umbra);color:var(--caliza)}
.langtog{display:flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.1em;font-weight:500}
.langtog button{background:none;border:0;color:inherit;cursor:pointer;font:inherit;opacity:.5;padding:2px 3px;letter-spacing:.1em}
.langtog button.on{opacity:1;color:var(--barro)}
.langtog .sep{opacity:.4}
.menu-btn{display:none;background:none;border:0;color:inherit;cursor:pointer;padding:6px}
.menu-btn svg{width:24px;height:24px}

/* mobile nav */
@media(max-width:860px){
  header.bar nav.main{position:fixed;inset:0;background:var(--umbra);color:var(--caliza);
    flex-direction:column;justify-content:center;gap:26px;transform:translateX(100%);
    transition:transform .4s cubic-bezier(.7,0,.2,1);}
  header.bar nav.main.open{transform:translateX(0)}
  header.bar nav.main a.navlink{font-size:16px;opacity:.9}
  .menu-btn{display:block;z-index:60;position:relative}
  header.bar .langtog{margin-top:10px}
}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--fi);font-size:12.5px;
  letter-spacing:.2em;text-transform:uppercase;font-weight:500;padding:15px 30px;border-radius:3px;
  border:1px solid var(--barro);color:var(--barro);background:transparent;cursor:pointer;transition:all .25s}
.btn:hover{background:var(--barro);color:var(--caliza)}
.btn--solid{background:var(--barro);color:var(--caliza)}
.btn--solid:hover{background:#96603d;border-color:#96603d}
.btn--light{border-color:var(--caliza);color:var(--caliza)}
.btn--light:hover{background:var(--caliza);color:var(--umbra)}
.link{display:inline-flex;align-items:center;gap:8px;color:var(--barro);font-size:12.5px;
  letter-spacing:.18em;text-transform:uppercase;font-weight:500}
.link .ar{transition:transform .25s}
.link:hover .ar{transform:translateX(5px)}

/* ---- hero ---- */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;color:var(--caliza);overflow:hidden}
.hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;z-index:0}
.hero .scrim{position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(30,26,22,.42) 0%,rgba(30,26,22,.05) 32%,rgba(30,26,22,.12) 62%,rgba(30,26,22,.78) 100%)}
.hero .inner{position:relative;z-index:2;width:100%;padding-bottom:clamp(48px,9vw,110px);padding-top:120px}
.hero .eyebrow{color:#e9dcc8}
.hero h1{margin:0;max-width:16ch;text-shadow:0 1px 30px rgba(0,0,0,.25)}
.hero h1 .a{color:#EAD7BE}
.hero .tag{font-family:var(--ff);font-style:italic;font-size:clamp(17px,2.6vw,25px);color:#EAD7BE;margin-top:20px}
.hero .cta-row{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero .scrolldown{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;opacity:.7;font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:#e9dcc8}

/* hero variant for interior pages (shorter) */
.hero.sub{min-height:78svh}

/* ---- grid helpers ---- */
.grid{display:grid;gap:clamp(20px,3vw,40px)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g-3,.g-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,72px);align-items:center}
.split.rev .txt{order:2}
@media(max-width:860px){.split{grid-template-columns:1fr}.split.rev .txt{order:0}}

/* ---- residence cards ---- */
.rcard{display:block;background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:box-shadow .3s, transform .3s}
.rcard:hover{box-shadow:0 18px 50px rgba(43,38,32,.14);transform:translateY(-3px)}
.rcard .ph{aspect-ratio:4/3;background:var(--arena) center/cover no-repeat;position:relative}
.rcard .ph .tag{position:absolute;top:14px;left:14px;background:rgba(43,38,32,.72);color:var(--caliza);font-size:10px;letter-spacing:.18em;text-transform:uppercase;padding:6px 11px;border-radius:2px}
.rcard .bd{padding:clamp(18px,2.4vw,26px)}
.rcard .bd .nm{font-family:var(--ff);font-size:clamp(21px,2.4vw,26px);margin:0}
.rcard .bd .pr{color:var(--barro);font-family:var(--ff);font-size:19px;margin:2px 0 12px}
.rcard .specs{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;letter-spacing:.04em;color:var(--piedra);border-top:1px solid var(--line);padding-top:12px;margin-top:2px}
.rcard .specs b{color:var(--umbra);font-weight:600;font-family:var(--fi)}
.rcard .more{margin-top:16px}

/* pillars */
.pillar{border-top:1px solid var(--line);padding-top:16px}
.pillar .n{font-family:var(--ff);color:var(--barro);font-size:15px;letter-spacing:.02em}
.pillar h3{margin:6px 0 6px}
.dark .pillar{border-color:rgba(244,238,229,.2)}
.dark .pillar .n{color:var(--arena)}

/* spec list (detail page) */
.spectable{width:100%;border-collapse:collapse}
.spectable td{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
.spectable td:first-child{color:var(--piedra);width:46%;letter-spacing:.02em}
.spectable td:last-child{font-family:var(--ff);font-weight:400;text-align:right}
.bignum{font-family:var(--ff);font-weight:300;font-size:clamp(40px,7vw,68px);line-height:1;color:var(--barro)}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.gallery a{display:block;aspect-ratio:3/2;overflow:hidden;border-radius:4px;background:var(--arena)}
.gallery a.wide{grid-column:span 2;aspect-ratio:3/2}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gallery a:hover img{transform:scale(1.04)}
@media(max-width:620px){.gallery{grid-template-columns:repeat(2,1fr)}.gallery a.wide{grid-column:span 2}}

/* figure */
.fig{border-radius:6px;overflow:hidden;background:var(--arena)}
.fig img{width:100%;height:100%;object-fit:cover}
.fig.tall{aspect-ratio:3/4}
.fig.wide{aspect-ratio:16/10}

/* map */
.mapwrap{border-radius:6px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/8;background:var(--caliza-2)}
.mapwrap iframe{width:100%;height:100%;border:0;display:block;filter:saturate(.9)}
@media(max-width:620px){.mapwrap{aspect-ratio:4/5}}

/* prev/next */
.pn{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:26px;margin-top:60px}
.pn a{font-size:13px;letter-spacing:.06em}
.pn .lbl{display:block;font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--piedra);margin-bottom:5px}

/* contact band */
.contact .box{background:var(--umbra);color:var(--caliza);border-radius:8px;padding:clamp(34px,6vw,72px);text-align:center}
.contact .box .eyebrow{color:var(--arena)}
.contact .box .cta-row{justify-content:center;display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}

/* ---- footer ---- */
footer.ft{background:var(--umbra);color:var(--caliza);text-align:center;padding:clamp(56px,9vw,110px) var(--gut)}
footer.ft .em svg{width:46px;height:46px;margin:0 auto}
footer.ft .wm{margin:16px 0 6px;display:inline-block}
footer.ft .tag{font-family:var(--ff);font-style:italic;color:var(--arena);font-size:16px}
footer.ft .cols{display:flex;justify-content:center;gap:clamp(24px,5vw,64px);flex-wrap:wrap;margin:34px 0 8px;font-size:12.5px;letter-spacing:.06em}
footer.ft .cols a{opacity:.82}
footer.ft .cols a:hover{opacity:1;color:var(--arena)}
footer.ft .legal{font-size:11px;color:var(--piedra);line-height:2;margin-top:26px;max-width:720px;margin-left:auto;margin-right:auto}
footer.ft .dev{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--arena);margin-top:18px}

/* reveal on scroll */
.rev{opacity:0;transform:translateY(22px);transition:opacity .8s ease, transform .8s ease}
.rev.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rev{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}