/* =============================================================
   1. Tokens
   ============================================================= */
:root{
  --ink:#12141a;
  --ink-soft:#191c24;
  --surface:#1e212a;

  --paper:#f7f6f2;
  --paper-soft:#ece9e1;
  --text-on-paper:#14161c;
  --text-on-paper-soft:#585b64;

  --blue:#d20100;
  --blue-dim:#970100;
  --blue-soft:rgba(210,1,0,.1);

  --line:rgba(255,255,255,.14);
  --line-soft:rgba(255,255,255,.08);
  --line-paper:rgba(20,22,28,.12);
  --line-paper-soft:rgba(20,22,28,.07);

  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --display:"Space Grotesk",var(--sans);
  --mono:"IBM Plex Mono",monospace;

  --ease-crearte:cubic-bezier(0.16,1,0.3,1);

  --container:1600px;
  --radius:14px;
  --radius-sm:8px;
  --header-h:80px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%;tab-size:2;scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} }
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  color:var(--text-on-paper);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
  overscroll-behavior-y:none;
}
img,svg,video{display:block;max-width:100%}
img{height:auto}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
p{text-wrap:pretty}
h1,h2,h3,h4{
  text-wrap:balance;line-height:1.04;letter-spacing:-0.01em;
  font-family:var(--display);font-weight:600;
  color:var(--text-on-paper);
}
.section-dark h1,.section-dark h2,.section-dark h3,
.section-cta-final h1,.section-cta-final h2,.section-cta-final h3{color:var(--paper)}
::selection{background:var(--blue);color:#fff}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}

.skip-link{
  position:fixed;top:-100px;left:1rem;z-index:9999;
  padding:.7rem 1.2rem;background:var(--blue);color:#fff;
  border-radius:8px;font-weight:600;
}
.skip-link:focus{top:1rem}

/* ---- Firma de autor: grano (constante) ---- */
.grain-overlay{
  position:fixed;inset:0;z-index:9000;pointer-events:none;
  opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Loader (firma de autor #2) ---- */
.loader{
  position:fixed;inset:0;z-index:9600;background:var(--ink);
  display:flex;align-items:center;justify-content:center;
}
.loader-count{
  font-family:var(--mono);font-size:clamp(1.4rem,4vw,2.2rem);color:var(--paper);
  letter-spacing:.02em;font-variant-numeric:tabular-nums;
}
.no-js .loader{display:none}

/* =============================================================
   3. Utilities
   ============================================================= */
.container{max-width:var(--container);margin-inline:auto;padding-inline:1.25rem}
.eyebrow{
  font-family:var(--mono);
  font-size:.75rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--blue-dim);
  font-weight:500;
  margin-bottom:.9rem;
}
.eyebrow-light{color:var(--blue)}
.section{padding-block:clamp(4rem,8vw,7rem);background:var(--paper);color:var(--text-on-paper);position:relative}
.section-dark{background:var(--ink);color:var(--paper)}
.section-alt{background:var(--paper-soft)}

.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:1rem 1.9rem;border-radius:var(--radius-sm);font-weight:600;font-size:.98rem;font-family:var(--sans);
  transition:transform .3s var(--ease-crearte),background .3s var(--ease-crearte),color .3s var(--ease-crearte),box-shadow .3s var(--ease-crearte);
  white-space:nowrap;overflow:visible;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-soft);box-shadow:0 10px 26px -10px rgba(18,20,26,.45)}
.btn-lg{padding:1.15rem 2.2rem;font-size:1.02rem}
.btn-label{position:relative;z-index:2}
.btn-stroke{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.btn-stroke rect{
  fill:none;stroke:var(--paper);stroke-width:1.4;
  stroke-dasharray:1;stroke-dashoffset:1;
  opacity:0;
}

/* =============================================================
   4. Header / Nav
   ============================================================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:500;
  height:var(--header-h);display:flex;align-items:center;
  background:rgba(247,246,242,.86);
  transition:background .3s var(--ease-crearte),box-shadow .3s var(--ease-crearte);
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.site-header.is-solid{background:rgba(247,246,242,.97);box-shadow:0 1px 0 var(--line-paper)}
.header-inner{width:100%;display:flex;align-items:center;justify-content:space-between;gap:1.5rem}
.brand{font-family:var(--display);font-weight:700;font-size:1.25rem;letter-spacing:-0.01em;color:var(--text-on-paper)}
.main-nav{display:flex;align-items:center;gap:2.2rem}
.main-nav a{
  font-size:.92rem;font-weight:500;color:var(--text-on-paper-soft);position:relative;padding-block:.3rem;
  transition:color .3s var(--ease-crearte);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1.5px;background:var(--blue);
  transition:right .3s var(--ease-crearte);
}
.main-nav a:hover{color:var(--text-on-paper)}
.main-nav a:hover::after{right:0}
.header-actions{display:flex;align-items:center;gap:1rem}

.nav-toggle{display:none;flex-direction:column;gap:5px;padding:.4rem;z-index:600}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text-on-paper);transition:transform .3s var(--ease-crearte),opacity .3s var(--ease-crearte)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-nav{
  display:none;position:fixed;inset:0;z-index:450;
  background:var(--paper);flex-direction:column;justify-content:center;align-items:flex-start;
  gap:1.5rem;padding:2rem 1.5rem;
}
.mobile-nav a{font-family:var(--display);font-size:1.9rem;font-weight:600;color:var(--text-on-paper)}
.mobile-nav a.btn{margin-top:1rem;color:#fff}

@media (max-width:900px){
  .main-nav{display:none}
  .header-actions .header-cta{display:none}
  .nav-toggle{display:flex}
  .mobile-nav[data-open]{display:flex}
}

/* =============================================================
   5. Hero (fondo claro como el sitio actual del cliente + loader→badge)
   ============================================================= */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  overflow:hidden;background:var(--paper);color:var(--text-on-paper);padding-block:var(--header-h) 3rem;
}
.hero-hatch{
  position:absolute;top:0;right:0;width:min(70vw,760px);height:min(70vw,760px);
  color:rgba(20,22,28,.09);pointer-events:none;
  clip-path:polygon(100% 0, 0 0, 100% 100%);
}
.hero-hatch svg{width:100%;height:100%}

.hero-inner{position:relative;z-index:10;width:100%}
.hero-title{font-size:clamp(2.6rem,6.4vw,5rem);margin-bottom:1.5rem;max-width:16ch;color:var(--text-on-paper)}
.hero-title-line{display:block;overflow:hidden}
.hero-title-line span{display:block}
.hero-sub{font-size:1.2rem;max-width:44ch;color:var(--text-on-paper-soft);margin-bottom:2.2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:1rem}
.hero .reveal{transition-delay:1.05s}

/* =============================================================
   6. Banner statement
   ============================================================= */
.banner-statement{
  background:var(--ink);color:var(--paper);padding-block:clamp(3.2rem,7vw,5.5rem);
}
.banner-statement p{
  font-family:var(--display);font-weight:600;text-align:center;
  font-size:clamp(1.4rem,3.4vw,2.3rem);line-height:1.3;max-width:44ch;margin-inline:auto;
  color:var(--paper);
}

/* =============================================================
   7. About / Why us (Historia — variante 4: reveal diagonal + parallax)
   ============================================================= */
.about-grid{display:grid;gap:3rem;align-items:center}
.about-media-mask{
  position:relative;aspect-ratio:4/5;border-radius:var(--radius);overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
}
.about-media-mask img{width:100%;height:100%;object-fit:cover;transform-origin:center center}

.about-text h2{font-size:clamp(1.9rem,3.6vw,2.7rem);margin-bottom:1.2rem}
.about-lede{color:var(--text-on-paper-soft);font-size:1.05rem;margin-bottom:2rem;max-width:56ch}

.checklist{display:flex;flex-direction:column;border-top:1px solid var(--line-paper);margin-bottom:2rem}
.checklist li{
  display:flex;align-items:center;gap:.9rem;padding-block:.85rem;
  border-bottom:1px solid var(--line-paper);font-weight:500;font-size:.98rem;
}
.checklist-num{font-family:var(--mono);font-size:.72rem;color:var(--text-on-paper-soft);width:1.4rem;flex-shrink:0}
.checklist-icon{
  display:flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;
  background:var(--blue-soft);color:var(--blue);flex-shrink:0;
}
.checklist-icon svg{width:13px;height:13px}

.about-copy{color:var(--text-on-paper-soft);max-width:58ch;margin-bottom:1rem;font-size:.98rem}
.about-copy:last-child{margin-bottom:0}

@media (min-width:860px){
  .about-grid{grid-template-columns:.9fr 1.1fr}
}

/* =============================================================
   8. Expertise (Servicios — variante 3 adaptada: crossfade en hover + parallax)
   ============================================================= */
.services-grid{display:grid;grid-template-columns:1fr;gap:1.4rem;margin-top:2.4rem;margin-bottom:clamp(3rem,6vw,4.5rem)}
.service-card{
  background:#fff;border:1px solid var(--line-paper-soft);border-radius:var(--radius);overflow:hidden;
}
.service-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper-soft)}
.service-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;transform-origin:center center;transition:opacity .5s var(--ease-crearte)}
.service-media img[data-img-b]{opacity:0}
.service-card:hover .service-media img[data-img-a]{opacity:0}
.service-card:hover .service-media img[data-img-b]{opacity:1}
.service-index{
  position:absolute;right:.9rem;bottom:.7rem;z-index:2;
  font-family:var(--mono);font-size:2.4rem;font-weight:500;color:rgba(255,255,255,.5);
  mix-blend-mode:overlay;pointer-events:none;
}
.service-body{padding:1.7rem 1.7rem 1.9rem}
.service-body h3{font-size:1.35rem;margin-bottom:.6rem;color:var(--text-on-paper)}
.service-body p{color:var(--text-on-paper-soft);font-size:.96rem}

@media (min-width:760px){
  .services-grid{grid-template-columns:repeat(3,1fr)}
}

/* ---- We're architects (bespoke, sin contar como variante) ---- */
.schematic-block{
  display:grid;gap:2.6rem;align-items:center;
  background:var(--ink);color:var(--paper);border-radius:var(--radius);padding:clamp(1.6rem,3vw,2.6rem);
}
.schematic-media{position:relative;aspect-ratio:16/9;border-radius:var(--radius-sm);overflow:hidden;background:var(--ink-soft)}
.schematic-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;transition:opacity .6s var(--ease-crearte)}
.schematic-media img[data-img-b]{opacity:0}
.schematic-media:hover img[data-img-a]{opacity:0}
.schematic-media:hover img[data-img-b]{opacity:1}
.schematic-tag{
  position:absolute;left:.8rem;top:.8rem;z-index:2;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink);background:var(--paper);padding:.35rem .6rem;border-radius:4px;
}
.schematic-text h2{font-size:clamp(1.7rem,3.2vw,2.3rem);margin-bottom:1.1rem;color:var(--paper)}
.schematic-text p{color:rgba(247,246,242,.82);margin-bottom:1rem;font-size:.98rem}
.schematic-text p:last-child{margin-bottom:0}
.schematic-text .eyebrow{margin-bottom:.8rem}

@media (min-width:860px){
  .schematic-block{grid-template-columns:1.1fr .9fr}
}

/* =============================================================
   9. Workflow / Engagement models (bespoke pricing grid)
   ============================================================= */
.workflow-head{max-width:56ch;margin-bottom:clamp(2.4rem,5vw,3.6rem)}
.workflow-head h2{font-size:clamp(2rem,4.4vw,3.1rem);margin-bottom:1.2rem}
.workflow-head p{color:rgba(247,246,242,.82);font-size:1.05rem}

.workflow-talk{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.6rem;
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  padding-block:2rem;margin-bottom:clamp(2.6rem,5vw,3.6rem);
}
.workflow-talk h3{font-size:1.5rem;margin-bottom:.4rem;color:var(--paper)}
.workflow-talk p{color:rgba(247,246,238,.82);max-width:40ch}

.pricing-grid{display:grid;grid-template-columns:1fr;gap:1.4rem}
.pricing-card{
  position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line-soft);
  border-radius:var(--radius);padding:2rem 1.8rem;
}
.pricing-bg-num{
  position:absolute;top:-.4rem;right:.6rem;font-family:var(--display);font-weight:700;font-size:6rem;
  color:rgba(247,246,242,.05);line-height:1;pointer-events:none;
}
.pricing-lede{color:rgba(247,246,242,.8);font-size:.88rem;margin-bottom:1.1rem;position:relative}
.pricing-card h3{font-size:1.55rem;margin-bottom:1.3rem;color:var(--paper);position:relative}
.pricing-features{display:flex;flex-direction:column;gap:.55rem;margin-bottom:1.5rem;position:relative}
.pricing-features li{
  font-size:.95rem;color:var(--paper);padding-left:1.1rem;position:relative;
}
.pricing-features li::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;background:var(--blue);border-radius:50%}
.pricing-ideal{border-top:1px solid var(--line-soft);padding-top:1.2rem;position:relative}
.pricing-ideal-label{
  display:block;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;
  color:rgba(247,246,242,.68);margin-bottom:.7rem;
}
.pricing-ideal ul{display:flex;flex-direction:column;gap:.4rem}
.pricing-ideal li{font-size:.88rem;color:rgba(247,246,242,.82)}

@media (min-width:760px){
  .pricing-grid{grid-template-columns:repeat(3,1fr)}
}

/* =============================================================
   10. Contact / CTA final
   ============================================================= */
.section-cta-final{background:var(--ink);color:var(--paper);overflow:hidden}
.cta-spotlight{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px circle at var(--x,50%) var(--y,30%),rgba(210,1,0,.18),transparent 60%);
}
.cta-final-grid{position:relative;display:grid;gap:2.6rem}
.cta-final-text h2{font-size:clamp(2.2rem,5vw,3.4rem);margin-block:.9rem 1.1rem}
.cta-final-sub{color:rgba(247,246,242,.82);font-size:1.05rem;max-width:56ch}
.brand-mark{font-family:var(--display);font-weight:700;font-size:1.3rem;margin-top:2rem;color:var(--paper)}

.contact-list{display:flex;flex-direction:column;gap:1.1rem;align-self:start}
.contact-list li{display:flex;align-items:center;gap:.7rem;font-size:1rem}
.contact-icon{color:var(--blue);flex-shrink:0}
.contact-list a:hover{color:var(--blue)}

.cta-social{display:flex;gap:1rem;align-self:start}
.cta-social a{
  display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);color:var(--paper);transition:border-color .3s var(--ease-crearte),color .3s var(--ease-crearte);
}
.cta-social a:hover{border-color:var(--blue);color:var(--blue)}

@media (min-width:860px){
  .cta-final-grid{grid-template-columns:1.3fr .7fr .5fr}
}

/* =============================================================
   11. Footer
   ============================================================= */
.site-footer{background:var(--ink);color:rgba(247,246,242,.78);border-top:1px solid var(--line-soft)}
.footer-bottom{padding-block:1.6rem;display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;font-size:.85rem}
.credit-badge{
  display:inline-flex;align-items:center;gap:.4rem;font-weight:600;color:rgba(247,246,242,.85);
}
.credit-badge svg{width:14px;height:14px;transition:transform .3s var(--ease-crearte)}
.credit-badge:hover{color:var(--blue)}
.credit-badge:hover svg{transform:translate(3px,-3px)}

/* =============================================================
   12. Reveal system (defensivo)
   ============================================================= */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease-crearte),transform .8s var(--ease-crearte)}
.reveal.is-visible{opacity:1;transform:none}
.reveal[data-cascade="l"]{transform:translate(-36px,26px)}
.reveal[data-cascade="r"]{transform:translate(36px,26px)}
.reveal[data-cascade].is-visible{transform:none}
.no-js .reveal{opacity:1;transform:none}

/* =============================================================
   13. Responsive tweaks
   ============================================================= */
@media (max-width:640px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .workflow-talk{flex-direction:column;align-items:flex-start}
  .workflow-talk .btn{width:100%;justify-content:center}
  .cta-social{margin-top:.5rem}
}