:root{
  --grafito:#181613;
  --yeso:#FAF9F6;
  --roble:#B08252;
  --corten:#7A4B2A;
  --piedra:#8F8B83;
  --hairline:#E0DCD3;
  --hairline-dark:#3A362F;
  --display:'Jost',sans-serif;
  --body:'Instrument Sans',sans-serif;
  --mono:'IBM Plex Mono',monospace;
  --gutter:clamp(1.25rem,4vw,4rem);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);
  background:var(--yeso);
  color:var(--grafito);
  font-size:1rem;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--roble);color:var(--yeso)}
img{display:block;width:100%;height:100%;object-fit:cover}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--roble);outline-offset:4px}

/* ---------- dimension-line motif ---------- */
.dim{
  display:flex;align-items:center;gap:.75rem;
  font-family:var(--mono);font-size:.6875rem;letter-spacing:.08em;
  color:var(--piedra);text-transform:uppercase;white-space:nowrap;
}
.dim::before,.dim::after{
  content:"";flex:1;height:1px;background:currentColor;opacity:.55;
  /* end ticks, like a dimension line on a plan */
  background:linear-gradient(currentColor,currentColor);
}
.dim::before{
  border-left:1px solid currentColor;
}
.dim::after{
  border-right:1px solid currentColor;
}
.dim::before,.dim::after{height:7px;background:
  linear-gradient(to bottom,transparent 3px,currentColor 3px,currentColor 4px,transparent 4px)}

/* ---------- nav ---------- */
header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem var(--gutter);
  transition:background .4s ease,box-shadow .4s ease;
}
header.solid{background:rgba(250,249,246,.92);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--hairline)}
.brand{display:flex;align-items:center;gap:.9rem}
.brand svg{
  display:block;flex:0 0 auto;
  width:2.95rem;height:2.16rem;aspect-ratio:60/44;
}
.brand-name{
  display:grid;justify-items:center;
  font-family:var(--display);font-weight:400;font-size:.78rem;
  letter-spacing:.34em;text-transform:uppercase;line-height:1.35;
}
.brand-name > span{white-space:nowrap}
.brand-name small{
  display:block;width:100%;text-align:center;text-indent:.54em;
  font-size:.6rem;letter-spacing:.54em;color:var(--piedra);font-weight:300;
}
header.on-dark:not(.solid){color:var(--yeso)}
header.on-dark:not(.solid) .brand-name small{color:rgba(250,249,246,.65)}
.nav-right{display:flex;align-items:center;gap:2.2rem}
nav{display:flex;gap:2.2rem}
nav a,.lang{
  font-family:var(--display);font-size:.72rem;font-weight:400;
  letter-spacing:.26em;text-transform:uppercase;
  padding:.25rem 0;position:relative;
}
nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--roble);transition:width .35s ease;
}
nav a:hover::after{width:100%}
.lang{
  border:1px solid currentColor;padding:.3rem .7rem;opacity:.85;
  transition:opacity .3s ease,border-color .3s ease,color .3s ease;
}
.lang:hover{opacity:1;border-color:var(--roble);color:var(--roble)}
@media (max-width:760px){nav{display:none}}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;justify-content:flex-end;
  color:var(--yeso);overflow:hidden;background:var(--grafito);
}
.hero-img{position:absolute;inset:0}
.hero-img img{
  object-position:center 28%;
  filter:brightness(.82);
  animation:heroIn 2.2s cubic-bezier(.22,.61,.21,1) both;
}
@keyframes heroIn{from{transform:scale(1.06);opacity:.4}to{transform:scale(1);opacity:1}}
.hero-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(24,22,19,.78) 0%,rgba(24,22,19,.18) 45%,rgba(24,22,19,.25) 100%);
}
.hero-content{
  position:relative;z-index:2;
  padding:0 var(--gutter) clamp(2.5rem,6vh,4.5rem);
}
.hero h1{
  font-family:var(--display);font-weight:300;
  font-size:clamp(2.4rem,7.4vw,6.3rem);
  line-height:1.04;letter-spacing:.14em;text-transform:uppercase;
}
.hero h1 .amp{color:var(--roble);font-weight:300}
.hero h1 span{display:block;opacity:0;transform:translateY(24px);animation:rise 1s cubic-bezier(.22,.61,.21,1) forwards}
.hero h1 span:nth-child(1){animation-delay:.5s}
.hero h1 span:nth-child(2){animation-delay:.72s}
.hero-meta{
  margin-top:2.2rem;max-width:56rem;
  opacity:0;animation:rise 1s .95s cubic-bezier(.22,.61,.21,1) forwards;
}
.hero-meta .dim{color:rgba(250,249,246,.8)}
@keyframes rise{to{opacity:1;transform:none}}
.hero-frame{
  position:absolute;z-index:2;inset:5.2rem var(--gutter) auto var(--gutter);
  display:flex;justify-content:space-between;
  font-family:var(--mono);font-size:.65rem;letter-spacing:.1em;
  color:rgba(250,249,246,.75);text-transform:uppercase;
  border-top:1px solid rgba(250,249,246,.35);
  padding-top:.6rem;
  opacity:0;animation:rise 1.2s 1.2s ease forwards;
}
@media (max-width:760px){
  .hero-frame{flex-direction:column;gap:.2rem}
  .dim{font-size:.56rem;letter-spacing:.05em}
}

/* ---------- shared section chrome ---------- */
section{padding:clamp(4.5rem,10vh,8rem) var(--gutter)}
.sec-label{margin-bottom:clamp(2.5rem,6vh,4.5rem)}
.sec-label .dim{color:var(--corten)}

/* ---------- manifiesto ---------- */
.manifiesto{max-width:72rem;margin-inline:auto}
.manifiesto blockquote{
  font-family:var(--display);font-weight:300;
  font-size:clamp(1.6rem,3.6vw,3rem);line-height:1.32;
  letter-spacing:.015em;
}
.manifiesto blockquote em{
  font-style:normal;color:var(--corten);
}
.manifiesto p{
  margin-top:2.4rem;max-width:38rem;color:var(--piedra);font-size:1.02rem;
}

/* ---------- proyectos ---------- */
.proyectos{background:var(--grafito);color:var(--yeso)}
.proyectos .sec-label .dim{color:var(--roble)}
.project-list{max-width:88rem;margin-inline:auto}
.project{
  padding-top:clamp(2rem,4vw,3.25rem);
  border-top:1px solid var(--hairline-dark);
}
.project + .project{margin-top:clamp(5rem,11vw,10rem)}
.project-info{
  display:grid;grid-template-columns:4rem minmax(0,1fr) minmax(10rem,.38fr);
  gap:1.5rem 2.25rem;align-items:start;
  margin-bottom:clamp(2rem,4vw,3.5rem);
}
.project-no,.project-data{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;
  color:var(--piedra);text-transform:uppercase;line-height:1.9;
}
.project-no{color:var(--roble)}
.project-data{text-align:right}
.project-copy h3{
  font-family:var(--display);font-weight:400;
  font-size:clamp(1.2rem,2.3vw,1.8rem);letter-spacing:.18em;text-transform:uppercase;
}
.project-copy > p{
  color:var(--piedra);font-size:.94rem;line-height:1.7;
  max-width:43rem;margin-top:.65rem;
}
.project-gallery{
  display:grid;grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(.8rem,2vw,1.75rem);align-items:end;
}
.project-media{display:block;overflow:hidden}
.project-media figure{overflow:hidden;background:#242119}
.project-media img{transition:transform .8s cubic-bezier(.22,.61,.21,1)}
.project-media:hover img{transform:scale(1.025)}
.gallery-lamas .project-media:first-child{grid-column:span 7}
.gallery-lamas .project-media:last-child{grid-column:span 5}
.gallery-lamas figure{aspect-ratio:1/1}
.gallery-single .project-media{grid-column:2/span 10}
.gallery-single figure{aspect-ratio:4/3}
.gallery-reforma .project-media,.gallery-cavas .project-media{grid-column:span 6}
.gallery-reforma figure,.gallery-cavas figure{aspect-ratio:4/5}
.gallery-vivienda .project-media:first-child{grid-column:span 12}
.gallery-vivienda .project-media:first-child figure{aspect-ratio:16/9}
.gallery-vivienda .project-media:not(:first-child){grid-column:span 6}
.gallery-vivienda .project-media:not(:first-child) figure{aspect-ratio:1/1}
.iglink{
  display:inline-block;margin-top:.4rem;
  font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;
  color:var(--roble);text-transform:uppercase;
  border-bottom:1px solid transparent;transition:border-color .3s ease;
}
.iglink:hover{border-color:var(--roble)}
@media (max-width:760px){
  .project-info{grid-template-columns:2.2rem 1fr;gap:1rem}
  .project-data{grid-column:2;text-align:left;margin-top:.25rem}
  .project-gallery .project-media{grid-column:span 12}
  .gallery-lamas .project-media:first-child,
  .gallery-lamas .project-media:last-child,
  .gallery-vivienda .project-media:not(:first-child){grid-column:span 12}
  .gallery-single .project-media{grid-column:span 12}
  .gallery-single figure{aspect-ratio:1/1}
  .gallery-vivienda .project-media:first-child figure{aspect-ratio:4/3}
}

/* ---------- servicios ---------- */
.servicios{max-width:72rem;margin-inline:auto}
.serv{
  display:grid;grid-template-columns:1fr;gap:.8rem 3rem;
  padding:2.6rem 0;border-top:1px solid var(--hairline);
}
.serv:last-child{border-bottom:1px solid var(--hairline)}
.serv h3{
  font-family:var(--display);font-weight:400;
  font-size:clamp(1.3rem,2.6vw,2rem);letter-spacing:.22em;text-transform:uppercase;
}
.serv p{color:var(--piedra);max-width:34rem}
.serv .tag{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;
  color:var(--corten);text-transform:uppercase;
}
@media (min-width:761px){
  .serv{grid-template-columns:10rem 1fr 1.2fr;align-items:baseline}
}

/* ---------- estudio ---------- */
.estudio{background:#F1EEE7}
.estudio-inner{
  max-width:88rem;margin-inline:auto;
  display:grid;gap:3rem;grid-template-columns:1fr;
}
@media (min-width:900px){.estudio-inner{grid-template-columns:1.1fr .9fr;align-items:center}}
.estudio figure{aspect-ratio:1/1;overflow:hidden}
.estudio h2{
  font-family:var(--display);font-weight:300;
  font-size:clamp(1.7rem,3.4vw,2.7rem);line-height:1.25;letter-spacing:.02em;
  margin-bottom:1.6rem;
}
.estudio p{color:#55524B;max-width:36rem;margin-bottom:1.2rem}
/* ---------- faq ---------- */
.faq{max-width:72rem;margin-inline:auto}
.faq details{border-top:1px solid var(--hairline);padding:1.5rem 0}
.faq details:last-child{border-bottom:1px solid var(--hairline)}
.faq summary{
  cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:baseline;gap:1.5rem;
  font-family:var(--display);font-weight:400;
  font-size:clamp(1.02rem,2.2vw,1.35rem);letter-spacing:.1em;text-transform:uppercase;
}
.faq summary::-webkit-details-marker{display:none}
.faq .faq-x{
  font-family:var(--mono);color:var(--corten);font-size:1.1rem;
  transition:transform .3s ease;flex-shrink:0;
}
.faq details[open] .faq-x{transform:rotate(45deg)}
.faq details p{color:var(--piedra);max-width:44rem;margin-top:1rem}

/* ---------- contacto ---------- */
.contacto{background:var(--grafito);color:var(--yeso);text-align:center}
.contacto .sec-label .dim{color:var(--roble)}
.contacto p.lead{
  font-family:var(--display);font-weight:300;
  font-size:clamp(1.4rem,2.8vw,2.1rem);letter-spacing:.04em;
  max-width:44rem;margin:0 auto 3rem;line-height:1.4;
}
.mailto{
  display:inline-block;
  font-family:var(--display);font-weight:300;
  font-size:clamp(1.15rem,3.4vw,2.6rem);
  letter-spacing:.08em;
  border-bottom:1px solid var(--roble);
  padding-bottom:.35rem;
  transition:color .3s ease,border-color .3s ease;
}
.mailto:hover{color:var(--roble)}
.c-links{
  margin-top:3.5rem;display:flex;justify-content:center;gap:3rem;flex-wrap:wrap;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--piedra);
}
.c-links a{border-bottom:1px solid transparent;transition:.3s;padding-bottom:2px}
.c-links a:hover{color:var(--yeso);border-color:var(--roble)}

/* ---------- formulario ---------- */
.cform{
  max-width:38rem;margin:3.5rem auto 0;text-align:left;
  display:grid;gap:1.6rem;
}
.cform .row{display:grid;gap:1.6rem;grid-template-columns:1fr}
@media (min-width:640px){.cform .row{grid-template-columns:1fr 1fr}}
.field label{
  display:block;font-family:var(--mono);font-size:.66rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--piedra);
  margin-bottom:.5rem;
}
.field input,.field textarea{
  width:100%;background:transparent;border:0;
  border-bottom:1px solid var(--hairline-dark);
  color:var(--yeso);font-family:var(--body);font-size:1rem;
  padding:.5rem 0;border-radius:0;
  transition:border-color .3s ease;
}
.field input:focus,.field textarea:focus{outline:none;border-bottom-color:var(--roble)}
.field textarea{resize:vertical;min-height:6rem}
.hp{position:absolute;left:-9999px;opacity:0;pointer-events:none}
.cform button{
  justify-self:start;cursor:pointer;background:transparent;
  border:1px solid var(--roble);color:var(--yeso);
  font-family:var(--display);font-size:.78rem;font-weight:400;
  letter-spacing:.3em;text-transform:uppercase;
  padding:1rem 2.6rem;
  transition:background .3s ease,color .3s ease;
}
.cform button:hover{background:var(--roble);color:var(--grafito)}
.cform button:disabled{opacity:.5;cursor:wait}
.form-status{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;
  min-height:1.2rem;color:var(--roble);
}
.form-status.err{color:#C96F5A}

footer{
  background:var(--grafito);color:var(--piedra);
  padding:2.2rem var(--gutter);
  display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;
  border-top:1px solid var(--hairline-dark);
  font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;
}
footer svg{height:1.6rem;width:auto}

/* ---------- reveals ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s ease,transform .9s cubic-bezier(.22,.61,.21,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}