/* ===========================================================
   SASSENAC — Sistema de diseño compartido
   Tokens heredados del portfolio y las propuestas comerciales:
   paper/ink, Space Grotesk + Inter + Space Mono, layout editorial.
   =========================================================== */

:root{
  --paper:#F5F5F2;
  --paper-2:#ECECE7;
  --ink:#0F0F11;
  --ink-2:#17171A;
  --gray-1:#5E5E63;
  --gray-2:#9A9A9F;
  --gray-3:#C4C4BF;
  --line:#DEDED9;
  --line-2:#2A2A2E;
  --white:#FFFFFF;
  --f-disp:'Space Grotesk',sans-serif;
  --f-body:'Inter',sans-serif;
  --f-mono:'Space Mono',monospace;
  --wrap:1140px;
  --nav-h:76px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}
::selection{background:var(--ink);color:var(--paper)}

.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.skip-link{
  position:absolute;top:-100px;left:16px;z-index:200;
  background:var(--ink);color:var(--paper);
  padding:12px 18px;font-family:var(--f-mono);font-size:13px;
  transition:top .2s ease;
}
.skip-link:focus{top:16px}

:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.section--dark :focus-visible{outline-color:var(--paper)}

/* ---------- layout ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;width:100%}
.section{padding:clamp(64px,10vh,120px) clamp(20px,5vw,56px);position:relative}
.section--dark{background:var(--ink);color:var(--paper)}
.section--tight{padding-top:clamp(40px,6vh,72px);padding-bottom:clamp(40px,6vh,72px)}
.section--first{padding-top:calc(var(--nav-h) + clamp(48px,8vh,96px))}

hr.rule{height:1px;background:var(--line);border:0;margin:0}
.section--dark hr.rule{background:var(--line-2)}

/* ---------- typography ---------- */
h1,h2,h3{font-family:var(--f-disp);font-weight:700;line-height:1.05;letter-spacing:-.02em}
.display{font-size:clamp(2.5rem,6.4vw,5rem);font-weight:700;line-height:1;letter-spacing:-.03em}
.h1{font-size:clamp(2rem,4.4vw,3.4rem)}
.h2{font-size:clamp(1.5rem,2.9vw,2.3rem)}
.h3{font-size:clamp(1.15rem,1.9vw,1.4rem);letter-spacing:-.01em}
.lead{font-size:clamp(1.05rem,1.5vw,1.25rem);line-height:1.55;color:var(--gray-1);max-width:60ch}
.section--dark .lead{color:var(--gray-3)}
p.body{max-width:64ch;color:var(--gray-1)}
.section--dark p.body{color:var(--gray-3)}
strong{font-weight:600;color:inherit}
.ink-strong{color:var(--ink);font-weight:600}
.section--dark .ink-strong{color:var(--white)}

.mono{font-family:var(--f-mono)}
.eyebrow{
  font-family:var(--f-mono);font-size:12px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gray-1);
  display:flex;align-items:center;gap:12px;margin-bottom:22px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:currentColor;opacity:.5}
.section--dark .eyebrow{color:var(--gray-2)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.06s}.d2{transition-delay:.12s}.d3{transition-delay:.18s}.d4{transition-delay:.24s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--f-disp);font-weight:600;font-size:15.5px;letter-spacing:-.01em;
  padding:15px 26px;border:1px solid var(--ink);cursor:pointer;
  text-decoration:none;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--ink);color:var(--paper)}
.btn--primary:hover{background:transparent;color:var(--ink)}
.btn--secondary{background:transparent;color:var(--ink)}
.btn--secondary:hover{background:var(--ink);color:var(--paper)}
.section--dark .btn{border-color:var(--paper)}
.section--dark .btn--primary{background:var(--paper);color:var(--ink)}
.section--dark .btn--primary:hover{background:transparent;color:var(--paper)}
.section--dark .btn--secondary{color:var(--paper)}
.section--dark .btn--secondary:hover{background:var(--paper);color:var(--ink)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.btn--sm{padding:10px 18px;font-size:14px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- nav ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(245,245,242,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-nav__inner{
  height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding-left:clamp(20px,5vw,56px);padding-right:clamp(20px,5vw,56px);
}
.site-nav__brand{
  font-family:var(--f-mono);font-weight:700;font-size:14px;letter-spacing:.12em;
  text-decoration:none;color:var(--ink);white-space:nowrap;
}
.site-nav__links{display:flex;align-items:center;gap:30px}
.site-nav__links a{
  font-family:var(--f-body);font-weight:500;font-size:15px;text-decoration:none;color:var(--gray-1);
  position:relative;padding:4px 0;
}
.site-nav__links a:hover,.site-nav__links a[aria-current="page"]{color:var(--ink)}
.site-nav__links a[aria-current="page"]::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--ink);
}
.site-nav__cta{white-space:nowrap}
.site-nav__toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border:0;background:none;cursor:pointer;
}
.site-nav__toggle span{display:block;width:22px;height:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease}
.site-nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.site-nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media(max-width:860px){
  .site-nav__links{
    position:fixed;inset:var(--nav-h) 0 0 0;background:var(--ink);
    flex-direction:column;justify-content:flex-start;align-items:flex-start;gap:0;
    padding:24px clamp(20px,6vw,40px);transform:translateX(100%);transition:transform .3s ease;
  }
  .site-nav__links.is-open{transform:translateX(0)}
  .site-nav__links a{
    color:var(--paper);font-family:var(--f-disp);font-size:1.6rem;font-weight:600;
    width:100%;padding:16px 0;border-bottom:1px solid var(--line-2);
  }
  .site-nav__links a[aria-current="page"]::after{display:none}
  .site-nav__links a[aria-current="page"]{color:var(--paper);opacity:.6}
  .site-nav__cta{display:none}
  .site-nav__links .site-nav__cta-mobile{display:inline-flex;margin-top:24px}
  .site-nav__toggle{display:flex}
}

/* ---------- metric grid ---------- */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:8px}
.section--dark .metrics{background:var(--line-2);border-color:var(--line-2)}
.metric{background:var(--paper);padding:28px 24px}
.section--dark .metric{background:var(--ink)}
.metric__label{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--gray-1);margin-bottom:14px;display:block}
.section--dark .metric__label{color:var(--gray-3)}
.metric__num{font-family:var(--f-disp);font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:700;line-height:1;letter-spacing:-.02em}
.metric__unit{font-size:.48em;color:var(--gray-2);font-weight:500}
.metric__sub{font-family:var(--f-mono);font-size:11.5px;color:var(--gray-2);margin-top:12px;line-height:1.5}

/* ---------- cards: services / founders / cases ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px)}
.card{border:1px solid var(--line);padding:32px;background:var(--paper-2)}
.section--dark .card{border-color:var(--line-2);background:var(--ink-2)}
.card__num{font-family:var(--f-mono);font-size:12px;color:var(--gray-2);margin-bottom:18px;display:block}
.card__title{font-family:var(--f-disp);font-size:1.5rem;font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.card__for{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:12.5px;color:var(--gray-2);line-height:1.6}
.section--dark .card__for{border-color:var(--line-2)}

.founder{display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:start}
.founder__photo{
  aspect-ratio:1;background:var(--paper-2);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--f-mono);font-size:11px;color:var(--gray-2);text-align:center;padding:10px;
}
.section--dark .founder__photo{background:var(--ink-2);border-color:var(--line-2)}
.founder__role{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--gray-2);margin:6px 0 14px}

.quote-block{max-width:44ch}
.quote-block p{font-family:var(--f-disp);font-weight:600;font-size:clamp(1.4rem,2.6vw,2rem);line-height:1.3;letter-spacing:-.015em}
.quote-block cite{display:block;margin-top:20px;font-family:var(--f-mono);font-style:normal;font-size:13px;color:var(--gray-2)}

.fig{
  position:relative;aspect-ratio:1;background:
    repeating-linear-gradient(135deg,transparent,transparent 9px,rgba(0,0,0,.03) 9px,rgba(0,0,0,.03) 10px),
    var(--paper-2);
  border:1px solid var(--line);
  display:flex;align-items:flex-end;padding:14px;color:var(--gray-1);
}
.section--dark .fig{background:
    repeating-linear-gradient(135deg,transparent,transparent 9px,rgba(255,255,255,.03) 9px,rgba(255,255,255,.03) 10px),
    var(--ink-2);border-color:var(--line-2);color:var(--gray-2)}
.fig__label{font-family:var(--f-mono);font-size:11px;line-height:1.4}

/* case cards */
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:16px}
.case-card{background:var(--paper);padding:28px;display:flex;flex-direction:column;gap:16px}
.case-card__top{display:flex;gap:14px;align-items:center}
.case-card__avatar{width:52px;height:52px;flex:none;background:var(--paper-2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-family:var(--f-mono);font-size:10px;color:var(--gray-2)}
.case-card__name{font-family:var(--f-disp);font-weight:700;font-size:1.05rem}
.case-card__handle{font-family:var(--f-mono);font-size:12px;color:var(--gray-2)}
.case-card__tag{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-2);border:1px solid var(--line);padding:3px 8px;align-self:flex-start}
.case-card p{font-size:15px;color:var(--gray-1);line-height:1.55}
.case-card__stats{display:flex;flex-wrap:wrap;gap:18px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.case-card__stat b{display:block;font-family:var(--f-disp);font-size:1.15rem;font-weight:700}
.case-card__stat span{font-family:var(--f-mono);font-size:10.5px;color:var(--gray-2);text-transform:uppercase;letter-spacing:.06em}
.case-card[hidden]{display:none}

/* filter tabs */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.filter-btn{
  font-family:var(--f-mono);font-size:12.5px;letter-spacing:.04em;
  padding:9px 18px;border:1px solid var(--line);background:transparent;color:var(--gray-1);cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.filter-btn:hover{border-color:var(--ink)}
.filter-btn[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- forms ---------- */
.form{max-width:560px;margin-top:8px}
.field{margin-bottom:22px}
.field label{display:block;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--gray-1);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--f-body);font-size:16px;color:var(--ink);
  background:var(--paper);border:1px solid var(--line);padding:13px 14px;
  transition:border-color .2s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink);outline:none}
.field textarea{resize:vertical;min-height:120px}
.field small{display:block;margin-top:6px;font-family:var(--f-mono);font-size:11.5px;color:var(--gray-2)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#B3261E}
.field.has-error small{color:#B3261E}
.form__status{
  margin-top:18px;padding:14px 16px;font-family:var(--f-mono);font-size:13px;
  border:1px solid var(--line);display:none;
}
.form__status.is-visible{display:block}
.form__status.is-success{border-color:var(--ink);background:var(--paper-2)}
.form__status.is-error{border-color:#B3261E;color:#B3261E}

.agenda-block{
  border:1px solid var(--line);padding:32px;display:flex;flex-direction:column;gap:18px;
  background:var(--paper-2);height:100%;
}
.section--dark .agenda-block{border-color:var(--line-2);background:var(--ink-2)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:clamp(56px,8vh,88px) clamp(20px,5vw,56px) 28px}
.site-footer__inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line-2)}
.site-footer__logo{font-family:var(--f-mono);font-weight:700;font-size:15px;letter-spacing:.12em}
.site-footer__brand p{margin-top:14px;color:var(--gray-3);max-width:32ch;font-size:15px}
.site-footer__links{display:flex;flex-direction:column;gap:12px}
.site-footer__links a,.site-footer__contact a{color:var(--gray-3);text-decoration:none;font-size:15px}
.site-footer__links a:hover,.site-footer__contact a:hover{color:var(--paper)}
.site-footer__contact{display:flex;flex-direction:column;gap:12px}
.site-footer__bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px;font-size:11.5px;color:var(--gray-2);letter-spacing:.06em}

@media(max-width:700px){
  .grid-2{grid-template-columns:1fr}
  .founder{grid-template-columns:120px 1fr}
  .site-footer__inner{grid-template-columns:1fr}
}