/* =========================================================
   Ulises Fossati — Portfolio · Monochrome (Geist)
   ========================================================= */
:root{
  --bg:#FAFAFA; --ink:#0A0A0A;
  --ink-2:rgba(10,10,10,.56); --ink-3:rgba(10,10,10,.40);
  --line:#E5E7EB; --line-2:#d8dadf;
  --dark:#0A0A0A; --on-dark:#FAFAFA;
  --on-dark-2:rgba(255,255,255,.60); --on-dark-3:rgba(255,255,255,.34); --on-dark-line:rgba(255,255,255,.14);
  --font:"Geist","GeistSans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Geist Mono",ui-monospace,"SFMono-Regular",monospace;
  --maxw:1440px; --pad:clamp(24px,3.4vw,48px);
  --ease:cubic-bezier(.16,1,.3,1); --ease-inout:cubic-bezier(.76,0,.24,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:clamp(15px,1.05vw,17px);line-height:1.55;font-weight:400;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
html.js body.is-loading{overflow:hidden;height:100dvh}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul{list-style:none}
::selection{background:var(--ink);color:var(--bg)}
.mono{font-family:var(--mono);font-weight:400;letter-spacing:.01em}
.period{color:inherit}
.arr{font-style:normal;display:inline-block}
.skip-link{position:fixed;top:-100px;left:16px;z-index:200;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:8px;font-weight:500;transition:top .25s var(--ease)}
.skip-link:focus{top:16px}

/* ===== PRELOADER ===== */
.loader{position:fixed;inset:0;z-index:120;background:var(--dark);color:var(--on-dark);display:flex;flex-direction:column;justify-content:space-between;padding:clamp(20px,4vw,42px);animation:loaderSafety 0s 7s forwards}
@keyframes loaderSafety{to{opacity:0;visibility:hidden;pointer-events:none}}
body.is-loaded .loader{transform:translateY(-100%);transition:transform .45s var(--ease);pointer-events:none}
html:not(.js) .loader{display:none}
.loader__top,.loader__bottom{display:flex;justify-content:space-between;align-items:center}
.loader__tag{font-size:11px;letter-spacing:.18em;color:var(--on-dark-3);text-transform:uppercase}
.loader__center{align-self:center;width:100%;max-width:var(--maxw);margin:0 auto;display:flex;flex-direction:column;gap:clamp(8px,1.5vw,16px)}
.loader__greets{position:relative;height:1.4em;font-size:clamp(14px,1.6vw,18px);color:var(--on-dark-2);font-weight:500}
.loader__greets span{position:absolute;left:0;top:0;opacity:0;transform:translateY(10px);transition:opacity .4s,transform .4s}
.loader__greets span.is-active{opacity:1;transform:none}
.loader__name{font-weight:500;line-height:.9;font-size:clamp(54px,13vw,200px);letter-spacing:-.04em}
.loader__word{display:block;overflow:hidden}
.loader__wi{display:inline-block;transform:translateY(110%);will-change:transform}
html:not(.js) .loader__wi{transform:none}
.loader__bar{flex:1;height:2px;background:var(--on-dark-line);margin-right:20px;overflow:hidden;border-radius:2px}
.loader__bar-fill{display:block;height:100%;width:0;background:var(--on-dark)}
.loader__pct{font-size:13px;color:var(--on-dark-2);min-width:54px;text-align:right}
.loader__pct b{color:var(--on-dark);font-weight:500}

.progress{position:fixed;top:0;left:0;height:2px;width:100%;background:var(--ink);transform:scaleX(0);transform-origin:left;z-index:90;will-change:transform;mix-blend-mode:difference}

.reveal{opacity:1;transform:none}
html.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
html.js .reveal.is-visible{opacity:1;transform:none}
/* service cards enter sliding in from the left (left-to-right) */
html.js .svc.reveal{transform:translateX(-52px)}
html.js .svc.reveal.is-visible{transform:none}
.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:.6em;font-weight:500;font-size:12px;line-height:1;letter-spacing:.15em;padding:12px 24px;border-radius:6px;white-space:nowrap;will-change:transform;transition:opacity .3s,background .3s,color .3s}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn--dark{background:var(--ink);color:var(--bg)}
.btn--dark:hover{opacity:.85}
.btn-pill{display:inline-flex;align-items:center;gap:.6em;background:var(--on-dark);color:var(--ink);font-weight:500;font-size:16px;padding:18px 34px;border-radius:50px;will-change:transform;transition:opacity .3s}
.btn-pill:hover{opacity:.88}
.btn-pill .arr{transition:transform .35s var(--ease)}
.btn-pill:hover .arr{transform:translate(4px,-4px)}

/* ===== NAV ===== */
.nav{position:fixed;top:0;left:0;width:100%;z-index:80;transition:background .4s var(--ease)}
.nav.is-stuck{background:rgba(250,250,250,.78);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav__inner{max-width:var(--maxw);margin:0 auto;padding:28px var(--pad);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px}
.nav__left{justify-self:start}.nav__right{justify-self:end;display:flex;align-items:center;gap:14px}
.lang{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:11px;letter-spacing:.12em}
.lang__opt{color:var(--ink-3);transition:color .25s;cursor:pointer;padding:8px 3px;margin:-8px 0}.lang__opt.is-active{color:var(--ink)}
.lang__track{position:relative;width:34px;height:18px;border-radius:20px;border:1px solid var(--line-2);background:#fff;cursor:pointer}
.lang__knob{position:absolute;top:1px;left:1px;width:14px;height:14px;border-radius:50%;background:var(--ink);transition:transform .3s var(--ease)}
.lang.is-en .lang__knob{transform:translateX(16px)}
.nav__links{justify-self:center;display:flex;gap:36px;font-family:var(--font);font-size:13px;font-weight:500;letter-spacing:.2em}
.nav__links a{color:var(--ink-2);transition:color .3s}
.nav__links a:hover,.nav__links a.is-active{color:var(--ink)}
.nav__burger{display:none;width:34px;height:30px;position:relative}
.nav__burger span{position:absolute;left:6px;width:22px;height:1.6px;background:var(--ink);transition:transform .3s var(--ease)}
.nav__burger span:nth-child(1){top:11px}.nav__burger span:nth-child(2){top:18px}
body.menu-open .nav__burger span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
body.menu-open .nav__burger span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.menu{position:fixed;inset:0;z-index:79;background:var(--dark);color:var(--on-dark);padding:120px var(--pad) 48px;display:flex;flex-direction:column;justify-content:space-between;clip-path:inset(0 0 100% 0);transition:clip-path .6s var(--ease),visibility 0s linear .6s;visibility:hidden}
body.menu-open .menu{clip-path:inset(0 0 0% 0);visibility:visible;transition:clip-path .6s var(--ease),visibility 0s}
.menu__links{display:flex;flex-direction:column;gap:4px}
.menu__links a{font-weight:500;font-size:clamp(34px,11vw,60px);letter-spacing:-.03em;display:flex;align-items:baseline;gap:16px;line-height:1.15;color:var(--on-dark);transition:transform .4s var(--ease),color .3s,opacity .3s}
.menu__links a span{font-size:13px;color:var(--on-dark-3);transition:color .3s}
.menu__links a:hover,.menu__links a:active{transform:translateX(16px)}
.menu__links a:hover span,.menu__links a:active span{color:var(--on-dark)}
.menu__foot{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:13px;color:var(--on-dark-2)}
.menu__foot a{transition:color .3s}.menu__foot a:hover{color:var(--on-dark)}
/* nav controls turn light while the dark menu is open */
body.menu-open .nav__burger span{background:var(--on-dark)}
body.menu-open .lang__opt{color:var(--on-dark-3)}
body.menu-open .lang__opt.is-active{color:var(--on-dark)}
body.menu-open .lang__track{border-color:rgba(255,255,255,.3);background:transparent}
body.menu-open .lang__knob{background:var(--on-dark)}
/* nav theme over dark sections */
.nav--dark.is-stuck{background:rgba(10,10,10,.55);border-bottom-color:var(--on-dark-line)}
.nav--dark .nav__links a{color:var(--on-dark-2)}
.nav--dark .nav__links a:hover,.nav--dark .nav__links a.is-active{color:var(--on-dark)}
.nav--dark .lang__opt{color:var(--on-dark-3)}
.nav--dark .lang__opt.is-active{color:var(--on-dark)}
.nav--dark .lang__track{border-color:rgba(255,255,255,.3);background:transparent}
.nav--dark .lang__knob{background:var(--on-dark)}
.nav--dark .btn--dark{background:var(--on-dark);color:var(--ink)}
.nav--dark .nav__burger span{background:var(--on-dark)}

/* ===== HUGE HEADINGS (solid color, per-letter split) ===== */
.huge-wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.huge{font-weight:500;line-height:.9;letter-spacing:-.05em;font-size:clamp(46px,10vw,144px)}
.huge > span{display:block;color:var(--ink)}
.huge--on-dark > span{color:var(--on-dark)}
.char{display:inline-block}
html.js [data-blur] .char{will-change:filter,transform,opacity}

/* ===== HERO ===== */
.hero{position:relative;min-height:100svh;max-width:var(--maxw);margin:0 auto;padding:clamp(120px,16vh,180px) var(--pad) 40px}
.hero__name{font-weight:500;line-height:.82;letter-spacing:-.05em;font-size:clamp(64px,18.5vw,290px);position:relative;z-index:1}
.hero__name .line{display:block}
.hero__name .line__in{display:inline-block}
.hero__name .char{display:inline-block}
.hero__name .cs{display:inline-block;will-change:transform,opacity}
.hero__role .char{display:inline-block}
.hero__role .cs{display:inline-block;will-change:transform,opacity}
.hero__role{position:absolute;right:var(--pad);bottom:clamp(200px,35.5vh,380px);text-align:left;font-weight:400;line-height:1.04;letter-spacing:-.02em;font-size:clamp(22px,3.4vw,46px);color:var(--ink-2)}
.hero__role-line{display:block;white-space:nowrap}
.hero__scroll{position:absolute;left:var(--pad);bottom:40px;display:flex;align-items:center;gap:14px;font-size:11px;letter-spacing:.14em;color:var(--ink-3)}
.hero__square{width:40px;height:1.5px;background:var(--ink);display:inline-block}

/* ===== SOLUTIONS ===== */
.solutions{padding:clamp(80px,14vh,170px) 0 clamp(40px,7vh,80px)}
.solutions .huge-wrap{margin-bottom:clamp(50px,8vw,90px)}
.svc-list{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);border-top:1px solid var(--line)}
.svc{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1.15fr) auto;gap:clamp(20px,4vw,56px);align-items:start;padding:clamp(28px,3.4vw,46px) clamp(16px,2vw,28px);border-bottom:1px solid var(--line);transition:color .45s var(--ease)}
.svc::before{content:"";position:absolute;top:0;bottom:0;left:50%;transform:translateX(-50%) scaleY(0);transform-origin:bottom center;width:100vw;background:var(--ink);z-index:-1;transition:transform .8s var(--ease-inout)}
.svc:hover::before{transform:translateX(-50%) scaleY(1);transform-origin:top center}
.svc:hover{border-color:transparent}
.svc__title{font-weight:500;font-size:clamp(26px,3.4vw,46px);letter-spacing:-.02em;line-height:1.02;transition:color .45s var(--ease)}
.svc__desc{color:var(--ink-2);max-width:52ch;padding-top:6px;font-size:clamp(14px,1.1vw,16px);line-height:1.5;transition:color .45s var(--ease)}
.svc__arr{font-size:22px;color:var(--ink-3);transition:transform .55s var(--ease-inout),color .5s var(--ease-inout);padding-top:6px}
.svc:hover .svc__title{color:var(--on-dark)}
.svc:hover .svc__desc{color:var(--on-dark-2)}
.svc:hover .svc__arr{color:var(--on-dark);transform:translate(8px,-8px) rotate(-45deg)}

/* ===== WORK (dark, stacked rows) ===== */
.work{background:var(--dark);color:var(--on-dark);padding:clamp(80px,14vh,170px) 0}
.work .huge-wrap{margin-bottom:clamp(50px,8vw,90px)}
.work__list{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);display:flex;flex-direction:column;gap:clamp(64px,9vw,120px)}
.wb{display:flex;gap:clamp(28px,4vw,72px);align-items:center}
.wb--rev{flex-direction:row-reverse}
.wb__media{display:block;flex:1.05;border-radius:14px;overflow:hidden;background:#141414;border:1px solid var(--on-dark-line)}
.wb__media img{width:100%;aspect-ratio:16/10;object-fit:cover;will-change:transform;transition:transform .65s var(--ease)}
.wb:hover .wb__media img{transform:scale(1.05)}
.wb__info{flex:.95}
.wb__title{font-weight:500;font-size:clamp(28px,3.6vw,58px);letter-spacing:-.02em;line-height:1.0}
.wb__desc{color:var(--on-dark-2);margin:16px 0 20px;max-width:44ch;font-size:clamp(14px,1.1vw,16px);line-height:1.55}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:24px}
.tags li{font-family:var(--mono);font-size:11px;color:var(--on-dark-2);border:1px solid var(--on-dark-line);padding:5px 10px;border-radius:50px}
.wb__link{display:inline-flex;align-items:center;gap:8px;font-weight:500;font-size:15px;color:var(--on-dark);position:relative}
.wb__link::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1.5px;background:var(--on-dark);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease)}
.wb:hover .wb__link::after{transform:scaleX(1)}
.wb__link .arr{transition:transform .45s var(--ease)}
.wb:hover .wb__link .arr{transform:translate(4px,-4px)}
.work__more-wrap{display:flex;justify-content:center;margin-top:clamp(60px,8vw,100px)}
.work__more{display:inline-flex;align-items:center;gap:9px;padding:15px 28px;border:1px solid var(--on-dark-line);border-radius:50px;font-weight:500;font-size:14px;color:var(--on-dark);will-change:transform;transition:background .3s,color .3s,border-color .3s}
.work__more:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark)}
.work__more .arr{transition:transform .35s var(--ease)}
.work__more:hover .arr{transform:translate(4px,-4px)}

/* ===== ABOUT (light, name marquee behind) ===== */
.about{position:relative;overflow:hidden;padding:clamp(90px,15vh,180px) 0}
.about__bg{position:absolute;inset:0;display:flex;align-items:flex-start;pointer-events:none;z-index:0}
.about__bg-track{display:flex;gap:clamp(30px,4vw,64px);white-space:nowrap;will-change:transform}
.about__bg-track span{font-weight:500;font-size:clamp(90px,17vw,280px);line-height:1;letter-spacing:-.04em;color:rgba(10,10,10,.045)}
.about__inner{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.about__inner .kicker{display:block;font-family:var(--font);font-weight:600;letter-spacing:.25em;font-size:11px;color:var(--ink);margin-bottom:clamp(26px,4vw,44px)}
.about__cols{display:flex;flex-direction:column;gap:clamp(28px,4vw,56px)}
@media (min-width:900px){.about__cols{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:64px}}
.about__title{flex-shrink:0;font-size:clamp(54px,9.7vw,140px);line-height:.9;letter-spacing:-.06em}
.about__bio{max-width:384px}
.about__bio p{font-weight:500;font-size:clamp(16px,1.32vw,19px);line-height:1.65;color:var(--ink);margin:0}
.about__links{display:flex;gap:24px;margin-top:26px;font-weight:500}
.about__links a{display:inline-flex;align-items:center;gap:7px}
.about__links .arr{transition:transform .35s var(--ease)}
.about__links a:hover .arr{transform:translate(3px,-3px)}

/* ===== CONTACT (dark) ===== */
.contact{background:var(--dark);color:var(--on-dark);padding:clamp(80px,14vh,170px) 0 clamp(50px,8vh,90px)}
.contact .huge-wrap{margin-bottom:clamp(46px,7vw,86px)}
.contact__title{font-size:clamp(46px,11vw,158px)}
.contact__top{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,3vw,44px) clamp(30px,5vw,80px);align-items:end;border-top:1px solid var(--on-dark-line);padding-top:clamp(34px,4vw,54px)}
.clink{display:inline-flex;align-items:center;gap:12px;font-weight:500;font-size:clamp(20px,2.6vw,40px);letter-spacing:-.02em;line-height:1.05;color:var(--on-dark);position:relative;width:fit-content}
.clink::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1.5px;background:var(--on-dark);transform:scaleX(1);transform-origin:left;transition:transform .4s var(--ease)}
.clink:hover::after{transform:scaleX(0);transform-origin:right}
.clink .arr{font-size:.6em;color:var(--on-dark-2);transition:transform .35s var(--ease)}
.clink:hover .arr{transform:translate(5px,-5px);color:var(--on-dark)}
.clink-block{display:flex;flex-direction:column;gap:10px}
.clink-label{color:var(--on-dark-3);font-size:11px;letter-spacing:.18em}
.contact__cta{text-align:center;display:flex;flex-direction:column;align-items:center;gap:clamp(26px,4vw,44px);padding:clamp(80px,14vh,170px) var(--pad) clamp(30px,5vh,60px)}
.contact__big{font-weight:500;font-size:clamp(34px,6.5vw,96px);letter-spacing:-.035em;line-height:1.0;max-width:16ch}

/* ===== FOOTER (dark + live clock) ===== */
.footer{background:var(--dark);color:var(--on-dark);padding:clamp(28px,3vw,40px) var(--pad)}
.footer__row{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px solid var(--on-dark-line)}
.footer__brand{font-weight:500;font-size:clamp(20px,2.4vw,30px);letter-spacing:-.02em}
.footer__social{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--on-dark-2)}
.footer__social a:hover{color:var(--on-dark)}
.footer__bottom{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center;padding-top:18px;color:var(--on-dark-3);font-size:12px}
.footer__clock b{color:var(--on-dark);font-weight:500}

/* ===== RESPONSIVE ===== */
@media (max-width:920px){
  .nav__links{display:none}.nav__burger{display:block}
  .nav__right .btn--dark{display:none}.nav__inner{grid-template-columns:1fr auto}.nav__right{gap:0}
  .wb,.wb--rev{flex-direction:column;gap:20px;align-items:stretch}
  .contact__top{grid-template-columns:1fr;gap:22px}
  .hero{min-height:calc(var(--vvh, 100dvh) - 190px);padding-top:clamp(96px,17vh,150px);padding-bottom:0;display:flex;flex-direction:column;justify-content:flex-start}
  .hero__name{font-size:clamp(80px,21.5vw,104px)}
  .hero__role{position:static;text-align:left;margin-top:22px}
  .hero__role-line{display:block;white-space:nowrap}
  .hero__scroll{position:absolute;left:var(--pad);bottom:48px;margin-top:0}
  .solutions{padding-top:clamp(46px,7vh,68px)}
  /* preloader Gael-style on mobile: name sits at the bottom, progress at the very bottom */
  .loader{justify-content:flex-start}
  .loader__center{margin-top:auto;margin-bottom:clamp(20px,4dvh,40px)}
  .svc{grid-template-columns:1fr auto;gap:14px}
  .svc__desc{grid-column:1/-1;max-width:none}
}
@media (max-width:560px){.svc__arr{display:none}}
@media (prefers-reduced-motion:reduce){
  [data-blur] .char,.hero__name .cs,.about__bio-text .wi,.about__title .ttl-in{filter:none!important;opacity:1!important;transform:none!important}
  .about__bg-track{animation:none!important}
}

/* ===== about bio: word-by-word masked reveal ===== */
.about__bio-text .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.14em;margin-bottom:-.14em}
html.js .about__bio-text .wi{display:inline-block}

/* ===== about title "Desarrollo software": masked line reveal ===== */
.about__title .ttl-line{display:block;overflow:hidden;padding-bottom:.09em;margin-bottom:-.09em}
html.js .about__title .ttl-in{display:inline-block}