/* SITI Systems — luxury minimal, Ketra-inspired.
   Templates switch ONLY these tokens (html[data-theme]); structure never changes. */

:root,[data-theme="cobalto"]{
  --bg:#FFFFFF; --soft:#F4F6FA; --card:#FFFFFF; --ink:#0C1B33; --muted:#5A6579; --line:#E2E7EF;
  --accent:#1C4FC4; --accent-hover:#163FA0; --accent-ink:#FFFFFF;
  --gold:#B8975A;
  --band:#0F2A66; --band-ink:#FFFFFF; --band-muted:#C9D4EC;
  --deep:#0C1B33; --deep-2:#13274A; --deep-ink:#FFFFFF; --deep-muted:#A9B5CB;
  --head-bg:rgba(255,255,255,.96); --head-ink:#0C1B33; --head-logo:dark;
  --display:"Jost",system-ui,sans-serif; --display-w:300; --display-track:-.01em;
  --radius:14px;
}
[data-theme="medianoche"]{
  --bg:#0A1528; --soft:#0F1D35; --card:#132341; --ink:#ECEFF5; --muted:#A3AEC2; --line:#22324F;
  --accent:#C6A464; --accent-hover:#D8B97A; --accent-ink:#0A1528;
  --gold:#C6A464;
  --band:#14223D; --band-ink:#ECEFF5; --band-muted:#B7C1D3;
  --deep:#060E1C; --deep-2:#0E1A30; --deep-ink:#ECEFF5; --deep-muted:#97A3B8;
  --head-bg:rgba(10,21,40,.95); --head-ink:#ECEFF5; --head-logo:light;
  --display:"Cormorant Garamond",Georgia,serif; --display-w:500; --display-track:0;
}
[data-theme="grafito"]{
  --bg:#212428; --soft:#2A2E33; --card:#30353B; --ink:#EEF1F4; --muted:#A9B1BA; --line:#3A4047;
  --accent:#6F95B4; --accent-hover:#86A9C6; --accent-ink:#121417;
  --gold:#C9D3DC;
  --band:#4F738F; --band-ink:#FFFFFF; --band-muted:#E1E9F0;
  --deep:#17191C; --deep-2:#212428; --deep-ink:#EEF1F4; --deep-muted:#9AA3AD;
  --head-bg:rgba(33,36,40,.95); --head-ink:#EEF1F4; --head-logo:light;
  --display:"Jost",system-ui,sans-serif; --display-w:300; --display-track:-.01em;
}
[data-theme="perla"]{
  --bg:#F3F2EF; --soft:#FFFFFF; --card:#FFFFFF; --ink:#16181C; --muted:#5F5B55; --line:#E2DED7;
  --accent:#16181C; --accent-hover:#34373D; --accent-ink:#FFFFFF;
  --gold:#9C7A4A;
  --band:#2A2723; --band-ink:#F3F2EF; --band-muted:#D6CFC4;
  --deep:#16181C; --deep-2:#23262B; --deep-ink:#F3F2EF; --deep-muted:#AFA9A0;
  --head-bg:rgba(243,242,239,.96); --head-ink:#16181C; --head-logo:dark;
  --display:"Cormorant Garamond",Georgia,serif; --display-w:500; --display-track:0;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.7 "Jost",system-ui,-apple-system,"Segoe UI",sans-serif}
img{max-width:100%;display:block}
a{color:inherit}
button{font:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--accent);color:var(--accent-ink);padding:.7rem 1rem}
.skip:focus{left:1rem;top:1rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 clamp(16px,4vw,48px)}
.narrow{max-width:860px}
.center{text-align:center}
.center p{margin-left:auto;margin-right:auto}

/* type */
.display,.h2,.card-title,.pc-title,.feature dt,.stat-n,.lb-text h2{font-family:var(--display);font-weight:var(--display-w);letter-spacing:var(--display-track)}
.display{font-size:clamp(2.6rem,6.4vw,5.6rem);line-height:1.04;margin:0}
.h2{font-size:clamp(1.9rem,3.6vw,3rem);line-height:1.12;margin:0 0 1rem}
.lead{font-size:clamp(1.08rem,1.4vw,1.25rem);line-height:1.7;color:var(--muted);max-width:62ch;font-weight:300}
p{max-width:70ch}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.95rem 1.9rem;border-radius:2px;border:1px solid transparent;text-decoration:none;font-weight:500;font-size:.98rem;letter-spacing:.03em;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn-sm{padding:.6rem 1.15rem;font-size:.9rem}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:var(--accent-hover)}
.btn-light{background:#fff;color:#0C1B33}
.btn-light:hover{background:var(--gold);color:#fff}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-row{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2.25rem}
.btn-row.center{justify-content:center}

/* header */
.site-head{position:fixed;inset:0 0 auto 0;z-index:60;color:var(--head-ink);background:var(--head-bg);border-bottom:1px solid var(--line);transition:background .3s,color .3s,border-color .3s}
.site-head.is-overlay:not(.scrolled){background:transparent;color:#fff;border-color:transparent}
.head-row{display:flex;align-items:center;gap:1.5rem;height:84px}
.brand img{height:52px;width:auto}
.brand .logo-dark{display:none}
[data-theme="cobalto"] .site-head:not(.is-overlay) .logo-light,[data-theme="cobalto"] .site-head.scrolled .logo-light,
[data-theme="perla"] .site-head:not(.is-overlay) .logo-light,[data-theme="perla"] .site-head.scrolled .logo-light{display:none}
[data-theme="cobalto"] .site-head:not(.is-overlay) .logo-dark,[data-theme="cobalto"] .site-head.scrolled .logo-dark,
[data-theme="perla"] .site-head:not(.is-overlay) .logo-dark,[data-theme="perla"] .site-head.scrolled .logo-dark{display:block}
.nav{margin-left:auto;display:flex;align-items:center;gap:.3rem}
.nav>a,.dd>button{color:inherit;text-decoration:none;background:none;border:0;padding:.55rem .85rem;font-size:.95rem;letter-spacing:.02em;cursor:pointer;border-radius:2px}
.nav>a:hover,.dd>button:hover{color:var(--gold)}
.site-head.is-overlay:not(.scrolled) .nav>a:hover,.site-head.is-overlay:not(.scrolled) .dd>button:hover{color:#fff;opacity:.75}
.nav a[aria-current="page"]{box-shadow:inset 0 -1px 0 var(--gold)}
.nav .lang{border:1px solid currentColor;opacity:.85;padding:.35rem .6rem;margin:0 .4rem;font-size:.85rem}
.nav .btn{margin-left:.4rem}
.site-head.is-overlay:not(.scrolled) .nav .btn{background:#fff;color:#0C1B33}
.dd{position:relative}
.dd>button::after{content:"";display:inline-block;width:.38em;height:.38em;margin-left:.5em;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:translateY(-.2em) rotate(45deg)}
.dd-menu{position:absolute;top:calc(100% + 10px);left:0;min-width:250px;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:var(--radius);padding:.5rem;box-shadow:0 20px 40px -20px rgba(0,0,0,.35);display:none}
.dd.open .dd-menu{display:block}
.dd-menu a{display:block;padding:.65rem .85rem;text-decoration:none;border-radius:8px}
.dd-menu a:hover,.dd-menu a[aria-current="page"]{background:var(--soft);color:var(--accent)}
.menu-toggle{display:none;margin-left:auto;width:44px;height:44px;background:none;border:0;color:inherit;cursor:pointer;position:relative}
.menu-toggle span:not(.sr){position:absolute;left:11px;right:11px;height:1.5px;background:currentColor;transition:transform .25s}
.menu-toggle span:nth-child(1){top:17px}.menu-toggle span:nth-child(2){top:26px}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4.5px) rotate(-45deg)}
@media (max-width:1040px){
  .menu-toggle{display:block}
  .nav{display:none;position:fixed;top:84px;left:0;right:0;bottom:0;background:var(--bg);color:var(--ink);flex-direction:column;align-items:stretch;padding:1rem clamp(16px,4vw,48px) 2rem;overflow:auto;gap:0}
  .nav.open{display:flex}
  .nav>a,.dd>button{font-size:1.15rem;padding:1rem 0;text-align:left;width:100%;border-bottom:1px solid var(--line);border-radius:0}
  .site-head.is-overlay:not(.scrolled) .nav>a:hover{color:var(--ink)}
  .dd>button::after{display:none}
  .dd-menu{position:static;display:block;border:0;box-shadow:none;background:none;padding:.25rem 0 .5rem 1rem}
  .nav .lang{align-self:flex-start;margin:1.25rem 0 0}
  .nav .btn{margin:1rem 0 0}
  .site-head.menu-open{background:var(--bg);color:var(--ink)}

}

/* hero (fullscreen, video) */
.hero{position:relative;min-height:100vh;min-height:100svh;display:grid;place-items:center;overflow:hidden;color:#fff;background:#0b0f16}
.hero-media{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-video,.hero-media iframe{position:absolute;top:50%;left:50%;width:100vw;height:56.25vw;min-height:100%;min-width:177.78vh;transform:translate(-50%,-50%);border:0;pointer-events:none;opacity:0;transition:opacity 1.2s}
.hero-video.ready,.hero-media iframe.ready{opacity:1}
.hero-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,20,.62) 0%,rgba(5,10,20,.45) 45%,rgba(5,10,20,.7) 100%)}
.hero-inner{position:relative;text-align:center;padding-top:84px;max-width:1080px}
.hero-sub{font-size:clamp(1.1rem,1.6vw,1.35rem);font-weight:300;max-width:52ch;margin:1.5rem auto 0;color:rgba(255,255,255,.88)}
.scroll-cue{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);color:#fff;text-decoration:none;font-size:.8rem;letter-spacing:.12em;display:flex;flex-direction:column;align-items:center;gap:.6rem;opacity:.8}
.scroll-cue::after{content:"";width:1px;height:42px;background:linear-gradient(#fff,transparent);animation:cue 2.2s ease-in-out infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

.page-hero{position:relative;min-height:66vh;display:grid;place-items:center;color:#fff;background:#0b0f16 var(--hero) center/cover no-repeat;padding:120px 0 72px}
.page-hero.tall{min-height:90vh}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,20,.6),rgba(5,10,20,.45) 50%,rgba(5,10,20,.7))}
.page-hero-inner{position:relative;max-width:980px}
.page-hero .display{font-size:clamp(2.4rem,5.4vw,4.6rem)}

/* sections */
.section{padding:clamp(4.5rem,9vw,8rem) 0}
.band-soft{background:var(--soft)}
.band-accent{background:var(--band);color:var(--band-ink)}
.band-accent .lead{color:var(--band-muted)}
.band-deep{background:var(--deep);color:var(--deep-ink)}
.band-deep .lead{color:var(--deep-muted)}
.sec-head{margin-bottom:clamp(2.5rem,5vw,3.5rem)}
.more-row{margin-top:clamp(2.5rem,5vw,3.5rem)}

/* intro + stats */
.intro .lead{font-size:clamp(1.15rem,1.7vw,1.4rem)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin-top:clamp(3rem,6vw,5rem);text-align:center}
.stat{padding-top:1.5rem;border-top:1px solid var(--gold);max-width:280px;margin:0 auto;width:100%}
.stat-n{display:block;font-size:clamp(2.6rem,5vw,4rem);line-height:1;color:var(--accent)}
[data-theme="medianoche"] .stat-n,[data-theme="perla"] .stat-n{color:var(--gold)}
.stat-l{display:block;margin-top:.6rem;color:var(--muted);font-size:.98rem}
@media (max-width:700px){.stats{grid-template-columns:1fr}}

/* cards (Ketra style: rounded media, generous body) */
.cards{list-style:none;margin:clamp(2.5rem,5vw,3.5rem) 0 0;padding:0;display:grid;gap:clamp(1.25rem,2.5vw,2rem)}
.cards-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cards-2{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:0}
@media (max-width:980px){.cards-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.cards-3,.cards-2{grid-template-columns:1fr}}
.card>a,.card.static{display:flex;flex-direction:column;height:100%;background:var(--card);border-radius:var(--radius);overflow:hidden;text-decoration:none;border:1px solid var(--line)}
.card-media{display:block;aspect-ratio:4/3;overflow:hidden}
.card-media.tall{aspect-ratio:3/2}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.card>a:hover .card-media img{transform:scale(1.04)}
.card-body{display:flex;flex-direction:column;gap:.6rem;padding:1.6rem 1.6rem 1.8rem;flex:1}
.card-title{font-size:1.6rem;line-height:1.2}
.card-text{color:var(--muted);font-weight:300}
.card-more{margin-top:auto;padding-top:.6rem;color:var(--accent);font-weight:500;font-size:.95rem}
[data-theme="perla"] .card-more{color:var(--gold)}
.card>a:hover .card-more{text-decoration:underline;text-underline-offset:5px}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;min-height:560px}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-text{padding:clamp(3rem,7vw,6.5rem);display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:.5rem}
.split-text .btn{margin-top:1.5rem}
@media (max-width:860px){.split{grid-template-columns:1fr}.split-media{aspect-ratio:4/3}}

/* project grid */
.pgrid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.25rem,2.5vw,2rem)}
@media (max-width:980px){.pgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.pgrid{grid-template-columns:1fr}}
.pc[hidden]{display:none}
.pc-btn{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;width:100%;height:100%}
.pc-btn:focus-visible{outline:2px solid var(--gold);outline-offset:4px;border-radius:var(--radius)}
.pc-media{display:block;aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius);background:var(--soft)}
.pc-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.pc-btn:hover .pc-media img{transform:scale(1.05)}
.pc-body{display:flex;flex-direction:column;gap:.2rem;padding:1.1rem .2rem 0}
.pc-title{font-size:1.35rem;line-height:1.25}
.pc-loc{font-size:.9rem;color:var(--gold)}
.pc-desc{font-size:.95rem;color:var(--muted);font-weight:300;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:.25rem}
.filters{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;margin-bottom:1.25rem}
.filters button{border:1px solid var(--line);background:transparent;color:var(--ink);padding:.6rem 1.2rem;border-radius:999px;cursor:pointer;font-size:.95rem}
.filters button:hover{border-color:var(--accent)}
.filters button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.count{text-align:center;color:var(--muted);margin:0 auto 2.5rem}

/* lightbox */
.lightbox{border:0;padding:0;max-width:min(1100px,94vw);width:100%;background:var(--card);color:var(--ink);border-radius:var(--radius);overflow:hidden}
.lightbox::backdrop{background:rgba(5,10,20,.82)}
.lb-media{position:relative;background:#000}
.lb-media img{width:100%;max-height:70vh;object-fit:contain}
.lb-prev,.lb-next{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;border:0;background:rgba(255,255,255,.9);color:#0C1B33;font-size:1.6rem;line-height:1;cursor:pointer}
.lb-prev{left:14px}.lb-next{right:14px}
.lb-close{position:absolute;top:12px;right:12px;z-index:2;width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.92);color:#0C1B33;font-size:1.6rem;cursor:pointer}
.lb-text{padding:1.5rem 2rem 2rem}
.lb-text h2{font-size:1.8rem;margin:0}
.lb-loc{color:var(--gold);margin:.2rem 0 .8rem}
.lb-desc{color:var(--muted);margin:0}

/* features list */
.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 clamp(2rem,6vw,5rem);margin:clamp(2.5rem,5vw,3.5rem) 0 0}
.feature{border-top:1px solid var(--line);padding:1.8rem 0}
.feature dt{font-size:1.45rem;line-height:1.25;margin-bottom:.5rem}
.feature dd{margin:0;color:var(--muted);font-weight:300}
@media (max-width:760px){.features{grid-template-columns:1fr}}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,5rem);align-items:start}
@media (max-width:760px){.two-col{grid-template-columns:1fr}}
.ticks{list-style:none;margin:0;padding:0}
.ticks li{padding:1rem 0 1rem 1.6rem;border-bottom:1px solid var(--line);position:relative;font-weight:300}
.ticks li::before{content:"";position:absolute;left:0;top:1.65rem;width:8px;height:1px;background:var(--gold)}
.wide-fig{margin:0}
.wide-fig img{width:100%;border-radius:var(--radius)}
.wide-fig figcaption{color:var(--muted);font-size:.92rem;margin-top:.8rem;text-align:center}

/* brands */
.brands{list-style:none;margin:0 auto;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:1rem 2.4rem;max-width:1080px}
.brands li{font-family:var(--display);font-weight:var(--display-w);font-size:1.17rem;color:var(--muted)}
.cedia{margin-top:3rem;color:var(--muted);font-size:.95rem}

.cta-band{padding:clamp(4rem,8vw,6.5rem) 0}
.cta-band .btn{margin-top:1.5rem}

/* contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(2.5rem,6vw,6rem)}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.contact-list{margin:2.5rem 0 0;display:grid;gap:1.1rem}
.contact-list div{display:grid;grid-template-columns:7rem 1fr;gap:1rem;padding-bottom:1.1rem;border-bottom:1px solid rgba(255,255,255,.12)}
.contact-list dt{color:var(--deep-muted);font-size:.92rem}
.contact-list dd{margin:0}
.contact-list a{color:var(--deep-ink);text-decoration:none}
.contact-list a:hover{color:var(--gold)}
.form{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem 1.25rem;align-content:start}
.form .full{grid-column:1/-1}
.form label{display:block;font-size:.9rem;color:var(--deep-muted);margin-bottom:.4rem}
.form input,.form select,.form textarea{width:100%;font:inherit;color:var(--deep-ink);background:var(--deep-2);border:1px solid rgba(255,255,255,.16);border-radius:4px;padding:.85rem 1rem}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--gold);outline:none}
.form select option{color:#000}
.hp{position:absolute;left:-9999px}
.form-status{grid-column:1/-1;margin:0;min-height:1.5em}
.form-status.ok{color:#9BE3B5}.form-status.err{color:#FFB4A8}
.form-status a{color:inherit}
@media (max-width:600px){.form{grid-template-columns:1fr}.contact-list div{grid-template-columns:1fr;gap:.2rem}}

/* footer */
.site-foot{background:var(--deep);color:var(--deep-muted);border-top:1px solid rgba(255,255,255,.08);padding:4rem 0 2rem;font-size:.95rem}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:2.5rem}
.foot-brand img{height:52px;width:auto;margin-bottom:1rem}
.site-foot h2{font-family:var(--display);font-weight:var(--display-w);font-size:1.25rem;color:var(--deep-ink);margin:0 0 1rem}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
.site-foot a{color:var(--deep-ink);text-decoration:none;opacity:.85}
.site-foot a:hover{opacity:1;color:var(--gold)}
.foot-legal{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;border-top:1px solid rgba(255,255,255,.1);margin-top:3rem;padding-top:1.5rem}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
.site-foot + .wa,.wa{position:fixed;right:20px;bottom:20px;z-index:50;width:56px;height:56px;border-radius:50%;background:#1F9E5A;color:#fff;display:grid;place-items:center;box-shadow:0 12px 28px -10px rgba(0,0,0,.5)}
.wa svg{width:28px;height:28px}
.wa:hover{background:#178048}
p.center,.more-row,.cedia{margin-left:auto;margin-right:auto;max-width:none}

/* 5 service cards: 3 on top, 2 wider below */
@media (min-width:981px){.cards-3.n5{grid-template-columns:repeat(6,minmax(0,1fr))}.cards-3.n5>li{grid-column:span 2}.cards-3.n5>li:nth-child(n+4){grid-column:span 3}.cards-3.n5>li:nth-child(n+4) .card-media{aspect-ratio:16/9}}
.btn-outline{border-color:currentColor;color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--gold);color:var(--gold)}
.btn .ico{width:18px;height:18px;flex:none}
.intro .btn-row{justify-content:center;margin-top:2rem}
.contact-brochure{margin-top:2rem}
.contact-brochure .btn{color:var(--deep-ink)}