:root{
  --noir:#0B0B0C;
  --char:#161617;
  --char-2:#1d1d1f;
  --ivory:#F4F0E8;
  --ivory-2:#EAE4D7;
  --white:#FAFAF8;
  --gold:#C0A062;
  --gold-soft:#D8C28C;
  --line-dark:rgba(255,255,255,.14);
  --line-light:rgba(11,11,12,.14);
  --serif:"Cormorant Garamond",Georgia,serif;
  --sans:"Jost","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.6,.01,.05,1);
  --pad:clamp(22px,6vw,120px);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--noir);color:var(--white);font-family:var(--sans);
  font-weight:300;line-height:1.6;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.lock{overflow:hidden;height:100vh}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--gold);color:var(--noir)}

.eyebrow{
  font-family:var(--sans);font-size:11px;font-weight:400;
  letter-spacing:.42em;text-transform:uppercase;color:var(--gold);
}
.serif{font-family:var(--serif)}

/* ============ INTRO CURTAIN ============ */
#intro{
  position:fixed;inset:0;z-index:1000;background:var(--noir);
  display:flex;align-items:center;justify-content:center;flex-direction:column;
  transition:transform 1.15s var(--ease),opacity .8s ease;
  will-change:transform;
}
#intro.lift{transform:translateY(-101%)}
.intro-mark{
  width:min(58vw,300px);opacity:0;transform:translateY(14px) scale(.98);
  filter:drop-shadow(0 0 40px rgba(0,0,0,.6));
  animation:markIn 1.4s var(--ease) .25s forwards;
}
.intro-rule{
  margin-top:30px;height:1px;width:0;background:linear-gradient(90deg,transparent,var(--gold),transparent);
  animation:ruleDraw 1.1s var(--ease) 1.1s forwards;
}
.intro-tag{
  margin-top:22px;opacity:0;font-size:10.5px;letter-spacing:.5em;text-transform:uppercase;
  color:rgba(255,255,255,.5);animation:fadeIn .9s ease 1.7s forwards;
}
@keyframes markIn{to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes ruleDraw{to{width:min(60vw,320px)}}
@keyframes fadeIn{to{opacity:1}}

/* ============ HEADER ============ */
header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px var(--pad);
  transition:background .5s var(--ease),padding .5s var(--ease),border-color .5s var(--ease);
  border-bottom:1px solid transparent;
}
header.scrolled{
  background:rgba(11,11,12,.82);backdrop-filter:blur(14px);
  padding:14px var(--pad);border-bottom:1px solid var(--line-dark);
}
.brand{height:55px;display:flex;align-items:center;gap:14px}
.brand img{height:80px;width:auto;transition:height .5s var(--ease)}
header.scrolled .brand img{height:26px}
nav.main{display:flex;gap:38px;align-items:center}
nav.main a{
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.78);
  position:relative;padding:4px 1;transition:color .3s;
}
nav.main a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);transition:width .4s var(--ease);
}
nav.main a:hover{color:var(--white)}
nav.main a:hover::after{width:100%}

.nav-cta{
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:rgba(255,255,255,.78);
  transition:color .3s;
}

.nav-cta:hover{color:var(--white)}
.burger{display:none;flex-direction:column;gap:6px;cursor:pointer;background:none;border:0;padding:6px}
.burger span{width:26px;height:1px;background:var(--white);transition:.35s var(--ease)}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--noir);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px;
  opacity:0;pointer-events:none;transition:opacity .5s var(--ease);
}
.drawer.open{opacity:1;pointer-events:auto}
.drawer a{font-family:var(--serif);font-size:34px;color:var(--white)}
.drawer a:hover{color:var(--gold)}

/* ============ HERO ============ */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:flex-end;
  padding:0 var(--pad) clamp(50px,9vh,110px);overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background:
   /* radial-gradient(120% 90% at 70% 10%,rgba(192,160,98,.10),transparent 60%),
    linear-gradient(180deg,#0d0d0f 0%,#0a0a0b 100%), */
    url("/img/proyectos/HorizontHouse/05.jpg");
  background-size:cover;background-position:center;
}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,11,12,.55) 0%,rgba(11,11,12,.2) 40%,rgba(11,11,12,.92) 100%)}
.hero-inner{position:relative;z-index:2;max-width:1100px}
.hero .eyebrow{opacity:0;transform:translateY(16px);animation:rise 1s var(--ease) .2s forwards}
.hero h1{
  font-family:var(--serif);font-weight:400;letter-spacing:-.01em;line-height:1.02;
  font-size:clamp(44px,8.2vw,128px);margin:.28em 0 .35em;max-width:14ch;
}
.hero h1 .gold{font-style:italic;color:var(--gold-soft)}
.hero h1 span{display:inline-block;opacity:0;transform:translateY(40px);animation:rise 1.1s var(--ease) forwards}
.hero p.lede{
  max-width:46ch;font-size:clamp(15px,1.6vw,18px);color:rgba(255,255,255,.72);
  opacity:0;transform:translateY(16px);animation:rise 1s var(--ease) .9s forwards;
}
@keyframes rise{to{opacity:1;transform:translateY(0)}}
.scroll-cue{
  position:absolute;left:var(--pad);bottom:26px;z-index:2;display:flex;align-items:center;gap:12px;
  font-size:10px;letter-spacing:.35em;text-transform:uppercase;color:rgba(255,255,255,.55);
  opacity:0;animation:fadeIn 1s ease 1.6s forwards;
}
.scroll-cue i{display:block;width:40px;height:1px;background:var(--gold);transform-origin:left;animation:cueLine 2.4s var(--ease) infinite}
@keyframes cueLine{0%,100%{transform:scaleX(.3);opacity:.4}50%{transform:scaleX(1);opacity:1}}

/* ============ SECTIONS shared ============ */
section{position:relative}
.section-head{display:flex;align-items:baseline;gap:20px;margin-bottom:clamp(34px,6vw,72px)}
.section-head .num{font-family:var(--serif);font-size:15px;color:var(--gold)}
.section-head h2{
  font-family:var(--serif);font-weight:400;font-size:clamp(30px,4.5vw,58px);line-height:1.05;letter-spacing:-.01em;
}

.reveal{opacity:0;transform:translateY(34px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in-view{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}

/* ============ MANIFESTO (light) ============ */
.manifesto{background:var(--ivory);color:var(--noir);padding:clamp(80px,13vh,170px) var(--pad)}
.manifesto .eyebrow{color:#9a7c3c}
.manifesto .grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(30px,7vw,110px);align-items:start}
.manifesto .lead{
  font-family:var(--serif);font-weight:400;font-size:clamp(26px,3.4vw,44px);line-height:1.18;letter-spacing:-.01em;
}
.manifesto .lead em{font-style:italic;color:#9a7c3c}
.manifesto .body p{font-size:clamp(15px,1.4vw,17px);color:#3a3833;margin-bottom:1.2em;max-width:54ch}
.stats{display:flex;gap:clamp(26px,5vw,70px);margin-top:46px;flex-wrap:wrap}
.stat .n{font-family:var(--serif);font-size:clamp(34px,4vw,56px);color:var(--noir);line-height:1}
.stat .l{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:#8a8377;margin-top:8px}
.hairline{height:1px;background:var(--line-light);margin:0 0 clamp(40px,6vw,70px)}

/* ============ PROJECTS ============ */
.projects{background:var(--noir);padding:clamp(80px,13vh,170px) var(--pad) clamp(60px,10vh,120px)}
.proj-list{display:grid;gap:1px;background:var(--line-dark);border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark)}
.proj-row{
  background:var(--noir);display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:24px;
  padding:clamp(22px,3.4vw,40px) 6px;cursor:pointer;transition:background .5s var(--ease),padding-left .5s var(--ease);
}
.proj-row:hover{background:var(--char);padding-left:24px}
.proj-row .idx{font-family:var(--serif);font-size:15px;color:var(--gold)}
.proj-row .title{font-family:var(--serif);font-size:clamp(24px,3.6vw,46px);font-weight:400;line-height:1;transition:color .4s}
.proj-row:hover .title{color:var(--gold-soft)}
.proj-row .meta{display:flex;gap:26px;align-items:center}
.proj-row .meta span{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.6)}
.proj-row .arrow{font-size:20px;color:var(--gold);transform:translateX(-6px);opacity:0;transition:.45s var(--ease)}
.proj-row:hover .arrow{transform:translateX(0);opacity:1}
.proj-thumb{
  position:fixed;width:300px;height:380px;pointer-events:none;z-index:40;opacity:0;
  transform:translate(-50%,-50%) scale(.9);transition:opacity .4s var(--ease),transform .4s var(--ease);
  background-size:cover;background-position:center;filter:saturate(1.05);
  border:1px solid var(--line-dark);
}
.proj-thumb.show{opacity:1;transform:translate(-50%,-50%) scale(1)}

/* gallery teaser cards under list (mobile-friendly visual) */
.proj-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(14px,2vw,26px);margin-top:clamp(50px,7vw,90px)}
.pcard{position:relative;overflow:hidden;cursor:pointer;aspect-ratio:4/5;background:var(--char)}
.pcard img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease),filter .6s;filter:grayscale(.2) brightness(.82)}
.pcard:hover img{transform:scale(1.06);filter:grayscale(0) brightness(.9)}
.pcard .cap{position:absolute;left:0;right:0;bottom:0;padding:26px;background:linear-gradient(0deg,rgba(11,11,12,.85),transparent)}
.pcard .cap .t{font-family:var(--serif);font-size:clamp(22px,2.6vw,32px)}
.pcard .cap .s{font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-soft);margin-top:6px}

/* ============ APPROACH (numbered process) ============ */
.approach{background:var(--char);padding:clamp(80px,13vh,170px) var(--pad)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-dark);border:1px solid var(--line-dark)}
.step{background:var(--char);padding:clamp(28px,3vw,44px) clamp(22px,2vw,34px);min-height:240px;display:flex;flex-direction:column;transition:background .5s}
.step:hover{background:var(--char-2)}
.step .sn{font-family:var(--serif);font-size:46px;color:var(--gold);line-height:1;margin-bottom:auto}
.step h3{font-family:var(--serif);font-weight:400;font-size:26px;margin:34px 0 10px}
.step p{font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.55}

/* ============ CONTACT ============ */
.contact{background:var(--noir);padding:clamp(80px,13vh,170px) var(--pad) clamp(60px,8vh,90px)}
.contact .big{font-family:var(--serif);font-weight:300;font-size:clamp(40px,8vw,120px);line-height:.98;letter-spacing:-.02em;max-width:13ch}
.contact .big em{font-style:italic;color:var(--gold-soft)}
.contact a.mail{display:inline-block;margin-top:36px;font-family:var(--serif);font-size:clamp(22px,3vw,40px);color:var(--gold-soft);position:relative}
.contact a.mail::after{content:"";position:absolute;left:0;bottom:2px;height:1px;width:100%;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.contact a.mail:hover::after{transform:scaleX(1)}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:clamp(60px,9vw,110px);padding-top:40px;border-top:1px solid var(--line-dark)}
.cinfo .l{font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.cinfo p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.7}

footer{background:var(--noir);padding:40px var(--pad);border-top:1px solid var(--line-dark);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer img{height:24px;opacity:.9}
footer .fnav{display:flex;gap:26px}
footer .fnav a,footer small{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.45)}
footer .fnav a:hover{color:var(--gold)}

/* ============ PROJECT DETAIL OVERLAY ============ */
.detail{
  position:fixed;inset:0;z-index:200;background:var(--noir);overflow-y:auto;overflow-x:hidden;
  transform:translateY(100%);transition:transform .8s var(--ease);
}
.detail.open{transform:translateY(0)}
.detail-close{
  position:fixed;top:22px;right:var(--pad);z-index:210;background:rgba(11,11,12,.6);backdrop-filter:blur(8px);
  border:1px solid var(--line-dark);color:var(--white);width:50px;height:50px;border-radius:50%;
  font-size:18px;cursor:pointer;transition:.4s var(--ease);display:flex;align-items:center;justify-content:center;
}
.detail-close:hover{background:var(--gold);border-color:var(--gold);color:var(--noir);transform:rotate(90deg)}
.d-hero{position:relative;height:78svh;min-height:440px;display:flex;align-items:flex-end;padding:0 var(--pad) clamp(40px,6vw,70px);overflow:hidden}
.d-hero .dbg{position:absolute;inset:0;background-size:cover;background-position:center;z-index:-2}
.d-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,11,12,.45),rgba(11,11,12,.2) 40%,rgba(11,11,12,.95));z-index:-1}
.d-hero .dtag{font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold-soft)}
.d-hero h2{font-family:var(--serif);font-weight:400;font-size:clamp(40px,8vw,108px);line-height:.98;letter-spacing:-.01em;margin-top:.2em}
.d-body{padding:clamp(50px,7vw,100px) var(--pad);max-width:1280px;margin:0 auto}
.d-spec{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line-dark);border:1px solid var(--line-dark);margin-bottom:clamp(60px,8vw,110px)}
.spec-cell{background:var(--noir);padding:24px 20px}
.spec-cell .sl{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.spec-cell .sv{font-family:var(--serif);font-size:21px;line-height:1.15}
.d-chapter{display:grid;grid-template-columns:.42fr 1fr;gap:clamp(24px,5vw,80px);margin-bottom:clamp(54px,7vw,100px)}
.d-chapter .ch-label{font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);padding-top:8px}
.d-chapter .ch-body p{font-size:clamp(15px,1.5vw,18px);color:rgba(255,255,255,.78);margin-bottom:1.1em;max-width:60ch}
.d-quote{font-family:var(--serif);font-style:italic;font-weight:300;font-size:clamp(26px,3.6vw,46px);line-height:1.22;color:var(--gold-soft);margin:clamp(40px,6vw,80px) 0;max-width:20ch}
.d-process{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line-dark);border:1px solid var(--line-dark);margin:clamp(40px,5vw,70px) 0}
.dp-step{background:var(--noir);padding:32px 28px;display:flex;gap:22px}
.dp-step .pn{font-family:var(--serif);font-size:34px;color:var(--gold);line-height:1}
.dp-step h4{font-family:var(--serif);font-weight:400;font-size:22px;margin-bottom:8px}
.dp-step p{font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.55}
.d-gallery{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(10px,1.4vw,18px);margin-top:clamp(40px,5vw,70px)}
.d-gallery img{width:100%;height:100%;object-fit:cover}
.g-tall{grid-column:span 5;aspect-ratio:3/4}
.g-wide{grid-column:span 7;aspect-ratio:7/5}
.g-full{grid-column:span 12;aspect-ratio:16/7}
.d-foot{margin-top:clamp(50px,7vw,90px);padding-top:36px;border-top:1px solid var(--line-dark);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px}
.d-foot .nextlbl{font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.d-foot .nextname{font-family:var(--serif);font-size:clamp(26px,3.4vw,44px);color:var(--white);cursor:pointer;transition:color .4s}
.d-foot .nextname:hover{color:var(--gold)}

/* ============ RESPONSIVE ============ */
@media(max-width:980px){
  .manifesto .grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .d-spec{grid-template-columns:repeat(3,1fr)}
  .d-chapter{grid-template-columns:1fr;gap:14px}
  .contact-grid{grid-template-columns:1fr;gap:34px}
}
@media(max-width:680px){
  nav.main{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .proj-row{grid-template-columns:34px 1fr;gap:14px;padding-left:0}
  .proj-row:hover{padding-left:8px}
  .proj-row .meta{display:none}
  .proj-row .arrow{display:none}
  .proj-cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .d-spec{grid-template-columns:repeat(2,1fr)}
  .d-process{grid-template-columns:1fr}
  .g-tall,.g-wide,.g-full{grid-column:span 12;aspect-ratio:4/3}
  .proj-thumb{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;animation-delay:0s!important;transition-duration:.15s!important}
  .hero h1 span,.hero .eyebrow,.hero p.lede{opacity:1;transform:none}
}