/* Sans Projects — site.css (V3) */
@font-face{font-family:"Open Sans";font-style:normal;font-display:swap;font-weight:300 800;src:url(/assets/fonts/open-sans-latin-wght-normal.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Open Sans";font-style:normal;font-display:swap;font-weight:300 800;src:url(/assets/fonts/open-sans-latin-ext-wght-normal.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  /* Grises de la marca (logos Sans Projects): #737373 texto del logo, #a6a6a6 gris, #d9d9d9 crudo, blanco */
  --ink:#5c5c5c;      /* el gris más oscuro: títulos de fichas y valores */
  --text:#666666;     /* texto corrido */
  --brand:#737373;    /* gris del logo: titulares, menú, botones, pie */
  --muted:#737373;    /* etiquetas pequeñas (mantiene contraste AA) */
  --gris:#a6a6a6;     /* detalles decorativos */
  --line:#d9d9d9;     /* crudo: líneas */
  --soft:#f2f2f2;     /* fondos suaves */
  --bg:#ffffff;
  --dark:#737373;     /* pie de página en el gris del logo */
  --gutter:clamp(20px,5vw,72px);
  --max:1440px;
  --header:84px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--header)}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Open Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:16px;line-height:1.7;font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
h1,h2,h3{color:var(--brand);font-weight:300;line-height:1.15;margin:0;letter-spacing:-.01em}
p{margin:0 0 1.1em}
strong,b{font-weight:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--brand);color:#fff;padding:8px 14px}
.skip:focus{left:8px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.kicker{display:inline-block;font-size:12px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:22px}
.kicker::before{content:"";display:inline-block;width:28px;height:1px;background:currentColor;vertical-align:middle;margin-right:12px;transform:translateY(-1px)}
.btn{display:inline-flex;align-items:center;gap:12px;font-size:12px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;padding:16px 28px;border:1px solid var(--brand);color:var(--brand);transition:background .3s var(--ease),color .3s var(--ease)}
.btn:hover{background:var(--brand);color:#fff}
.btn--light{border-color:rgba(255,255,255,.8);color:#fff}
.btn--light:hover{background:#fff;color:var(--brand)}
.btn--solid{background:var(--brand);border-color:var(--brand);color:#fff}
.btn--solid:hover{background:var(--ink);border-color:var(--ink)}
.btn svg{width:16px;height:16px;flex:none}
.link-arrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--brand);border-bottom:1px solid var(--gris);padding-bottom:6px}
.link-arrow svg{width:14px;height:14px;transition:transform .3s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- Header ---------- */
.header{position:fixed;inset:0 0 auto;z-index:50;height:var(--header);display:flex;align-items:center;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.2) blur(8px);-webkit-backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line);transition:background .4s var(--ease),border-color .4s var(--ease),transform .4s var(--ease)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:block;width:168px;flex:none}
.logo img{width:100%;height:auto}
.logo .logo-w{display:none}
.nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,40px)}
.nav a{font-size:12px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--brand);position:relative;padding:6px 0}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.langs{display:flex;align-items:center;gap:4px;margin-left:clamp(8px,1.5vw,24px);padding-left:clamp(14px,1.8vw,28px);border-left:1px solid var(--line)}
.langs a{font-size:11px;font-weight:400;letter-spacing:.14em;color:var(--gris);padding:6px 6px}
.langs a[aria-current="true"]{color:var(--brand)}
.langs a:hover{color:var(--brand)}
.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;margin-right:-10px}
.burger span{display:block;width:24px;height:1px;background:var(--brand);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:24px;height:1px;background:inherit}
.burger span::before{top:-7px}.burger span::after{top:7px}
/* transparent header over hero */
.has-hero .header:not(.is-solid){background:transparent;border-color:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
.has-hero .header:not(.is-solid) .logo .logo-d{display:none}
.has-hero .header:not(.is-solid) .logo .logo-w{display:block}
.has-hero .header:not(.is-solid) .nav a{color:#fff}
.has-hero .header:not(.is-solid) .langs{border-color:rgba(255,255,255,.3)}
.has-hero .header:not(.is-solid) .langs a{color:rgba(255,255,255,.65)}
.has-hero .header:not(.is-solid) .langs a[aria-current="true"],.has-hero .header:not(.is-solid) .langs a:hover{color:#fff}
.has-hero .header:not(.is-solid) .burger span{background:#fff}

/* Mobile menu */
.mnav{position:fixed;inset:0;z-index:60;background:var(--bg);display:flex;flex-direction:column;padding:0 var(--gutter) 40px;opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s}
.mnav.is-open{opacity:1;visibility:visible}
.mnav-top{height:var(--header);display:flex;align-items:center;justify-content:space-between}
.mnav-close{width:44px;height:44px;margin-right:-10px;position:relative}
.mnav-close::before,.mnav-close::after{content:"";position:absolute;left:10px;top:21px;width:24px;height:1px;background:var(--brand);transform:rotate(45deg)}
.mnav-close::after{transform:rotate(-45deg)}
.mnav ul{list-style:none;margin:6vh 0 0;padding:0}
.mnav li{border-bottom:1px solid var(--line)}
.mnav li a{display:block;padding:18px 0;font-size:26px;font-weight:300;color:var(--brand)}
.mnav .langs{border:0;margin:auto 0 0;padding:0;gap:14px}
.mnav .langs a{font-size:13px}
.mnav-contact{margin-top:28px;font-size:14px;color:var(--muted);line-height:1.9}

@media (max-width:980px){
  :root{--header:72px}
  .nav,.header .langs{display:none}
  .burger{display:flex}
  .logo{width:140px}
}

/* ---------- Hero (home) ---------- */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;overflow:hidden;background:var(--brand)}
.hero-slides{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1.6s var(--ease)}
.hero-slide.is-active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover;transform:scale(1.06);transition:transform 9s linear}
.hero-slide.is-active img{transform:scale(1)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(40,40,40,.35) 0%,rgba(40,40,40,0) 26%,rgba(40,40,40,0) 46%,rgba(40,40,40,.5) 100%);pointer-events:none}
.hero-content{position:relative;z-index:2;padding:calc(var(--header) + 36px) 0 clamp(48px,10vh,110px)}
.hero .kicker{color:rgba(255,255,255,.85)}
.hero h1{color:#fff;font-size:clamp(38px,min(6.2vw,11vh),92px);font-weight:300;max-width:13ch;letter-spacing:-.02em}
.hero p{max-width:46ch;font-size:clamp(16px,1.35vw,19px);margin:22px 0 34px;color:rgba(255,255,255,.9)}
.hero-dots{position:absolute;right:var(--gutter);bottom:clamp(48px,10vh,110px);z-index:2;display:flex;gap:10px}
.hero-dots button{width:34px;height:20px;position:relative}
.hero-dots button::after{content:"";position:absolute;left:0;right:0;top:9px;height:2px;background:rgba(255,255,255,.4);transition:background .3s}
.hero-dots button[aria-current="true"]::after{background:#fff}
.hero-caption{position:absolute;right:var(--gutter);bottom:calc(clamp(48px,10vh,110px) + 32px);z-index:2;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.75)}
@media (max-width:700px){.hero-dots,.hero-caption{display:none}}

/* ---------- Sections ---------- */
.section{padding:clamp(80px,11vw,160px) 0}
.section--soft{background:var(--soft)}
.section-head{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:40px clamp(40px,6vw,120px);align-items:end;margin-bottom:clamp(44px,6vw,80px)}
.section-head h2{font-size:clamp(32px,4vw,58px)}
.section-head p{margin:0;max-width:56ch}
@media (max-width:860px){.section-head{grid-template-columns:1fr}}

.intro{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:40px clamp(40px,7vw,140px);align-items:start}
.intro h2{font-size:clamp(28px,3.3vw,48px);line-height:1.22}
.intro-text p{font-size:17px}
.intro-text .link-arrow{margin-top:14px}
@media (max-width:860px){.intro{grid-template-columns:1fr}}

.services{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.service{padding:36px clamp(16px,2vw,32px) 8px 0;border-right:1px solid var(--line);margin-right:clamp(16px,2vw,32px)}
.service:last-child{border-right:0;margin-right:0}
.service-n{font-size:12px;font-weight:400;letter-spacing:.2em;color:var(--muted);margin-bottom:46px}
.service h3{font-size:22px;font-weight:400;margin-bottom:16px}
.service p{font-size:15px;line-height:1.75;margin:0}
@media (max-width:1100px){.services{grid-template-columns:repeat(2,minmax(0,1fr))}.service:nth-child(2){border-right:0;margin-right:0}.service:nth-child(n+3){border-top:1px solid var(--line)}}
@media (max-width:640px){.services{grid-template-columns:1fr}.service{border-right:0;margin-right:0;border-top:1px solid var(--line);padding-right:0}.service:first-child{border-top:0}.service-n{margin-bottom:18px}}

/* ---------- Project cards ---------- */
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(36px,4vw,64px) clamp(20px,2.4vw,40px)}
.grid--home .card:nth-child(1){grid-column:span 2}
.grid--home .card:nth-child(1) .card-img{aspect-ratio:16/9.1}
.grid--home .card:nth-child(2){display:flex;flex-direction:column}
.grid--home .card:nth-child(2) .card-img{flex:1 1 auto;aspect-ratio:auto;min-height:0}
.grid--home .card:nth-child(2) .card-img img{position:absolute;inset:0}
@media (max-width:1000px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid--home .card:nth-child(1){grid-column:auto}.grid--home .card:nth-child(1) .card-img,.grid--home .card:nth-child(2) .card-img{aspect-ratio:4/3;flex:none}}
@media (max-width:620px){.grid{grid-template-columns:1fr}}
.card{display:block;position:relative}
.card-img{position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--soft)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease)}
.card:hover .card-img img{transform:scale(1.045)}
.card-tag{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand);font-size:10px;font-weight:400;letter-spacing:.18em;text-transform:uppercase;padding:6px 10px}
.card-body{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-top:18px;border-bottom:1px solid var(--line);padding-bottom:14px}
.card-title{font-size:21px;font-weight:400;color:var(--brand);letter-spacing:0}
.card-meta{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);text-align:right;white-space:nowrap}
.card-type{display:block;font-size:14px;color:var(--muted);margin-top:8px}
.section-foot{margin-top:clamp(48px,6vw,80px);display:flex;justify-content:center}

.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(36px,4vw,56px)}
.filters button{font-size:11px;font-weight:400;letter-spacing:.18em;text-transform:uppercase;padding:11px 18px;border:1px solid var(--line);color:var(--text);transition:all .25s}
.filters button:hover{border-color:var(--brand);color:var(--brand)}
.filters button[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.filters .count{opacity:.55;margin-left:6px}
.card[hidden]{display:none}

/* ---------- Page heads ---------- */
.page-head{padding:calc(var(--header) + clamp(56px,9vw,130px)) 0 clamp(40px,5vw,72px)}
.page-head h1{font-size:clamp(40px,6vw,88px);letter-spacing:-.02em}
.page-head p{max-width:60ch;font-size:17px;margin:24px 0 0}

/* ---------- Project detail ---------- */
.p-hero{position:relative;height:78vh;height:78svh;min-height:420px;background:var(--brand);margin-top:0}
.p-hero img{width:100%;height:100%;object-fit:cover}
.p-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.35) 0%,rgba(0,0,0,0) 30%,rgba(0,0,0,0) 60%,rgba(0,0,0,.45) 100%)}
.p-hero .wrap{position:absolute;left:0;right:0;bottom:clamp(36px,6vh,72px);z-index:2;color:#fff}
.p-hero .kicker{color:rgba(255,255,255,.85)}
.p-hero .kicker a:hover{color:#fff}
.p-hero h1{color:#fff;font-size:clamp(44px,7vw,110px);letter-spacing:-.02em}
.p-body{display:grid;grid-template-columns:minmax(260px,4fr) minmax(0,8fr);gap:clamp(40px,6vw,110px);padding-top:clamp(56px,7vw,110px);padding-bottom:clamp(56px,7vw,110px)}
.p-info{position:sticky;top:calc(var(--header) + 40px);align-self:start}
.p-info dl{margin:0}
.p-info dt{font-size:11px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.p-info dd{margin:0 0 26px;font-size:17px;color:var(--brand);padding-bottom:24px;border-bottom:1px solid var(--line)}
.p-info dd:last-of-type{border-bottom:0}
.p-info .note{font-size:13px;color:var(--muted);margin-top:-6px}
.p-info .link-arrow{margin-top:18px}
.gallery{columns:2;column-gap:clamp(12px,1.4vw,20px)}
.gallery a{display:block;margin-bottom:clamp(12px,1.4vw,20px);break-inside:avoid;overflow:hidden;background:var(--soft);cursor:zoom-in}
.gallery img{width:100%;transition:transform .9s var(--ease),opacity .4s}
.gallery a:hover img{transform:scale(1.03)}
@media (max-width:900px){.p-body{grid-template-columns:1fr}.p-info{position:static}}
@media (max-width:560px){.gallery{columns:1}}

.p-nav{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.p-nav a{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:clamp(220px,28vw,380px);padding:clamp(24px,3vw,48px);color:#fff;overflow:hidden;background:var(--brand)}
.p-nav a img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;transition:transform 1.1s var(--ease),opacity .5s}
.p-nav a:hover img{transform:scale(1.05);opacity:.5}
.p-nav span{position:relative;z-index:1}
.p-nav .lbl{font-size:11px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;opacity:.85;margin-bottom:10px}
.p-nav .nm{font-size:clamp(26px,3vw,44px);font-weight:300}
.p-nav a:last-child{text-align:right;align-items:flex-end}
@media (max-width:640px){.p-nav{grid-template-columns:1fr}.p-nav a:last-child{text-align:left;align-items:flex-start}}

/* ---------- About ---------- */
.about{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(40px,7vw,130px);align-items:start;padding-bottom:clamp(80px,10vw,150px)}
.about figure{margin:0;position:sticky;top:calc(var(--header) + 40px)}
.about figure img{width:100%;background:#111}
.about figcaption{margin-top:16px;font-size:13px;color:var(--muted);letter-spacing:.06em}
.about figcaption strong{display:block;font-size:17px;color:var(--brand);letter-spacing:.02em;font-weight:400;margin-bottom:2px}
.about-text p{font-size:18px;line-height:1.8}
@media (max-width:860px){.about{grid-template-columns:1fr}.about figure{position:static;max-width:460px}}

/* ---------- Contact ---------- */
.contact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);margin-bottom:clamp(56px,7vw,100px)}
.contact > div{padding:34px 30px 34px 0;border-right:1px solid var(--line);margin-right:30px}
.contact > div:last-child{border-right:0;margin-right:0}
.contact h2{font-size:11px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.contact p{font-size:19px;color:var(--brand);line-height:1.6;margin-bottom:18px}
.contact .link-arrow{font-size:11px}
.contact-actions{display:flex;flex-wrap:wrap;gap:12px;padding-bottom:clamp(80px,10vw,150px)}
@media (max-width:860px){.contact{grid-template-columns:1fr}.contact > div{border-right:0;margin-right:0;border-bottom:1px solid var(--line);padding-right:0}}

/* ---------- CTA ---------- */
.cta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta h2{font-size:clamp(30px,3.6vw,52px);max-width:16ch}
.cta p{margin:14px 0 0;max-width:46ch}

/* ---------- Legal ---------- */
.legal{max-width:820px;padding-bottom:clamp(80px,10vw,140px)}
.legal h2{font-size:22px;font-weight:300;margin:44px 0 14px}
.legal p,.legal li{font-size:16px}
.legal table{width:100%;border-collapse:collapse;font-size:14px;margin:16px 0}
.legal th,.legal td{border-bottom:1px solid var(--line);text-align:left;padding:10px 8px;vertical-align:top}

/* ---------- Footer ---------- */
.footer{background:var(--dark);color:#fff;padding:clamp(64px,8vw,110px) 0 36px;font-size:14px}
.footer a:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(255,255,255,.6)}
.footer-top{display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2fr));gap:40px}
.footer-logo{width:170px;margin-bottom:22px}
.footer h2{font-size:11px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.footer ul{list-style:none;margin:0;padding:0;line-height:2.1}
.footer address{font-style:normal;line-height:1.9}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;margin-top:clamp(56px,7vw,90px);padding-top:26px;border-top:1px solid rgba(255,255,255,.35);font-size:12px;letter-spacing:.06em}
.footer-bottom nav{display:flex;gap:22px;flex-wrap:wrap}
@media (max-width:900px){.footer-top{grid-template-columns:1fr 1fr}.footer-top > div:first-child{grid-column:1/-1}}
@media (max-width:520px){.footer-top{grid-template-columns:1fr}}

/* ---------- Lightbox ---------- */
.lb{position:fixed;inset:0;z-index:80;background:rgba(38,38,38,.97);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.lb.is-open{opacity:1;visibility:visible}
.lb img{max-width:calc(100vw - 160px);max-height:calc(100vh - 140px);max-height:calc(100svh - 140px);width:auto;height:auto;object-fit:contain;user-select:none}
.lb-btn{position:absolute;width:56px;height:56px;display:flex;align-items:center;justify-content:center;color:#fff;opacity:.75;transition:opacity .2s}
.lb-btn:hover{opacity:1}
.lb-btn svg{width:26px;height:26px}
.lb-prev{left:16px;top:50%;transform:translateY(-50%)}
.lb-next{right:16px;top:50%;transform:translateY(-50%)}
.lb-close{right:16px;top:16px}
.lb-count{position:absolute;left:0;right:0;bottom:22px;text-align:center;color:rgba(255,255,255,.7);font-size:12px;letter-spacing:.2em}
@media (max-width:700px){.lb img{max-width:100vw;max-height:calc(100svh - 160px)}.lb-prev,.lb-next{top:auto;bottom:6px;transform:none}}

/* ---------- 404 ---------- */
.nf{min-height:80vh;display:flex;align-items:center;padding-top:var(--header)}
.nf h1{font-size:clamp(40px,6vw,80px);margin-bottom:20px}

/* ---------- Reveal ---------- */
.js .rv{opacity:0;transform:translateY(24px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .rv.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
  .hero-slide,.hero-slide img,.card-img img,.gallery img{transition:none!important;transform:none!important}
}
.contact-img{position:relative;height:clamp(280px,48vw,620px);overflow:hidden;background:var(--soft)}
.contact-slide{position:absolute;inset:0;opacity:0;transition:opacity 1.6s var(--ease)}
.contact-slide.is-active{opacity:1}
.contact-img img{width:100%;height:100%;object-fit:cover}