/* KBenIA design system — brandbook brand/brandbook/BRANDBOOK.md (+2026-07-10 accent amendment) */
:root{
  --bg:#0c0b0a; --bg-2:#1d1c1a; --ink:#faf9f5; --muted:#b0aea5;
  --line:#2e2c29; --accent:#d97757; --accent-soft:#e5977b;
  --c-nexostrat:#e8a34e; --c-atten:#5db8ae; --c-diezyocho:#c97bc2;
  --font-display:'JetBrains Mono',ui-monospace,monospace;
  --font-body:'Manrope',system-ui,sans-serif;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--bg);color:var(--ink);font-family:var(--font-body);line-height:1.6;overflow-x:hidden}

/* bilingual visibility — ES readable with no JS */
[lang-visible]{display:none}
html[data-lang="es"] [lang-visible="es"]{display:inline}
html[data-lang="en"] [lang-visible="en"]{display:inline}

/* blueprint grid + vignette (body backdrop) */
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;opacity:.13}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(ellipse at 50% 30%,transparent 40%,var(--bg) 95%)}

.container{max-width:1160px;margin:0 auto;padding:0 24px}
.bracket-label{font-family:var(--font-display);font-size:.75rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent)}
.section{padding:96px 0;border-top:1px solid var(--line);scroll-margin-top:var(--header-h)}
.section-head{margin-bottom:48px}
h1,h2,h3,h4{font-family:var(--font-display);text-transform:uppercase;letter-spacing:-.02em;line-height:1.05}

.btn{display:inline-block;font-family:var(--font-display);font-size:.75rem;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;text-decoration:none;
  padding:14px 24px;border-radius:4px;transition:all .25s}
.btn-solid{background:var(--accent);color:var(--bg)}
.btn-solid:hover{background:var(--accent-soft)}
.btn-outline{border:1px solid var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* cards + corner-bracket hover motif */
.card{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:8px;
  padding:32px;transition:border-color .25s,transform .25s}
.card::before,.card::after{content:"";position:absolute;width:14px;height:14px;opacity:0;
  transition:opacity .25s;border-color:var(--sec-accent,var(--accent));border-style:solid}
.card::before{top:-1px;left:-1px;border-width:2px 0 0 2px}
.card::after{bottom:-1px;right:-1px;border-width:0 2px 2px 0}
.card:hover{transform:translateY(-4px)}
.card:hover::before,.card:hover::after{opacity:1}

/* per-company accent scoping */
.sec-nexostrat{--sec-accent:var(--c-nexostrat)}
.sec-atten{--sec-accent:var(--c-atten)}
.sec-diezyocho{--sec-accent:var(--c-diezyocho)}

/* scroll reveal */
html.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
html.js .reveal.revealed{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html.js .reveal{opacity:1;transform:none;transition:none}}

/* ============================================================
   Header, nav, dropdown, lang toggle, burger, mobile menu, footer
   ============================================================ */

/* -- site header -- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(12,11,10,.72);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s,border-color .25s;
}
.site-header.scrolled{
  background:rgba(12,11,10,.94);
  border-bottom-color:var(--line);
}
.header-inner{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}

/* -- wordmark -- */
.wordmark{
  font-family:var(--font-display);font-weight:800;font-size:1.15rem;
  letter-spacing:-.02em;text-transform:uppercase;text-decoration:none;
  color:var(--ink);white-space:nowrap;
}
.wordmark span{color:var(--accent)}

/* -- desktop nav -- */
.nav-desktop{
  display:flex;align-items:center;gap:8px;flex:1;justify-content:center;
}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:4px;
  font-family:var(--font-display);font-size:.78rem;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;text-decoration:none;
  color:var(--muted);background:none;border:0;cursor:pointer;
  padding:10px 14px;border-radius:4px;transition:color .2s,background .2s;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink);background:var(--bg-2)}
.dd-caret{font-size:.65em;transition:transform .2s}
.dropdown.open .dd-caret{transform:rotate(180deg)}

/* -- dropdown -- */
.dropdown{position:relative}
.dropdown-menu{
  position:absolute;top:calc(100% + 6px);left:0;min-width:200px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:6px;
  padding:8px;display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s,transform .18s,visibility .18s;
  z-index:110;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu,
.dropdown.open .dropdown-menu{
  opacity:1;visibility:visible;transform:translateY(0);
}
.dropdown-menu a{
  display:block;padding:9px 12px;border-radius:4px;
  font-family:var(--font-body);font-size:.85rem;font-weight:500;
  color:var(--ink);text-decoration:none;white-space:nowrap;
  transition:background .18s,color .18s;
}
.dropdown-menu a:hover,.dropdown-menu a:focus-visible{
  background:var(--bg);color:var(--accent);
}

/* -- header actions: lang + burger -- */
.header-actions{display:flex;align-items:center;gap:8px}

.lang-btn{
  font-family:var(--font-display);font-size:.7rem;font-weight:700;
  letter-spacing:.08em;color:var(--muted);background:none;
  border:1px solid var(--line);border-radius:4px;
  padding:6px 10px;cursor:pointer;transition:border-color .2s,color .2s;
}
.lang-btn:hover{color:var(--ink)}
.lang-btn.active{border-color:var(--accent);color:var(--accent)}

/* -- burger -- */
.burger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:36px;height:36px;background:none;border:0;cursor:pointer;padding:8px;
}
.burger span{
  display:block;width:100%;height:2px;background:var(--ink);
  border-radius:1px;transition:transform .25s,opacity .25s,background .25s;
}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* -- mobile menu -- */
.mobile-menu{
  display:none;position:fixed;top:var(--header-h);left:0;right:0;z-index:99;
  flex-direction:column;
  background:var(--bg-2);border-bottom:1px solid var(--line);
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.mobile-menu.open{max-height:calc(100vh - var(--header-h));overflow-y:auto}
.mobile-menu a{
  display:block;padding:16px 24px;font-family:var(--font-display);
  font-size:.85rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:var(--ink);text-decoration:none;border-top:1px solid var(--line);
}
.mobile-menu a:first-child{border-top:0}
.mobile-menu a:hover,.mobile-menu a:focus-visible{color:var(--accent);background:var(--bg)}

/* -- site footer -- */
.site-footer{
  border-top:1px solid var(--line);padding:48px 0;background:var(--bg-2);
}
.footer-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.footer-meta{
  font-family:var(--font-body);font-size:.85rem;color:var(--muted);text-align:right;
}
.footer-meta .bracket-label{display:inline-block;margin-bottom:6px}

/* -- responsive: breakpoint 900px -- */
@media (max-width:900px){
  .nav-desktop{display:none}
  .burger{display:flex}
  .mobile-menu{display:flex}
}

/* ensure no horizontal scroll at narrow widths (>=360px) */
@media (max-width:360px){
  .container{padding:0 16px}
}

/* ============================================================
   Hero + marquee divider
   ============================================================ */

/* -- hero -- */
.hero{
  min-height:calc(100vh - var(--header-h));
  padding-top:calc(var(--header-h) + 64px);
  padding-bottom:64px;
  display:flex;flex-direction:column;justify-content:center;align-items:flex-start;
  gap:24px;
}
.hero-title{
  font-size:clamp(3rem,9vw,6.5rem);
}
.hero-type{
  display:block;
  font-family:var(--font-display);font-weight:700;
  text-transform:lowercase;letter-spacing:0;
  color:var(--accent);
  font-size:clamp(1.3rem,3vw,2.6rem);
  margin-top:8px;
}
.caret{
  display:inline-block;width:2px;height:1em;
  background:var(--accent);margin-left:2px;vertical-align:text-bottom;
  animation:blink 1s step-end infinite;
}
@keyframes blink{50%{opacity:0}}
@media (prefers-reduced-motion:reduce){
  .caret{animation:none}
}
.hero-lede{
  font-family:var(--font-body);font-size:clamp(1rem,1.6vw,1.25rem);
  color:var(--muted);max-width:640px;
}
.hero-lede strong{color:var(--ink)}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;margin-top:8px}

/* -- marquee divider -- */
.marquee{
  overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:20px 0;background:var(--bg-2);
}
.marquee-track{
  display:flex;gap:2rem;white-space:nowrap;animation:marquee 28s linear infinite;
  font-family:var(--font-display);font-weight:800;font-size:clamp(1.5rem,4vw,2.5rem);
  text-transform:uppercase;-webkit-text-stroke:1px var(--line);color:transparent;
  width:max-content;
}
.dot{color:var(--accent);-webkit-text-stroke:0}
@keyframes marquee{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){
  .marquee-track{animation:none;transform:none}
}

/* ============================================================
   Company sections — bento / stagger / css-art layouts
   ============================================================ */

.section-lede{
  font-family:var(--font-body);font-size:clamp(1rem,1.4vw,1.15rem);
  color:var(--muted);max-width:640px;margin-top:12px;
}
.sec-title{color:var(--sec-accent)}
.card-link{
  display:inline-block;margin-top:16px;font-family:var(--font-display);
  font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--sec-accent);text-decoration:none;
}
.card-link:hover{color:var(--ink)}

/* -- Nexostrat: bento grid -- */
.bento-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.bento-grid .card-feature{display:flex;flex-direction:column;justify-content:center}

/* -- Atten Solutions: staggered grid -- */
.stagger-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.stagger-grid .card:nth-child(2){transform:translateY(24px)}
.stagger-grid .card:nth-child(3){transform:translateY(-16px)}
.stagger-grid .card:hover{transform:translateY(-4px)}

/* -- Diez y Ocho: two-col visual, CSS-generated art panel -- */
.dyo-visual{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.dyo-art{
  min-height:220px;border-radius:8px;border:1px solid var(--line);background-color:var(--bg-2);
  background-image:
    repeating-linear-gradient(45deg,transparent 0 12px,color-mix(in srgb,var(--sec-accent) 18%,transparent) 12px 13px),
    radial-gradient(circle at 30% 30%,color-mix(in srgb,var(--sec-accent) 30%,transparent),transparent 70%);
}

@media (max-width:900px){
  .bento-grid{grid-template-columns:1fr}
  .stagger-grid{grid-template-columns:1fr}
  .stagger-grid .card:nth-child(2),
  .stagger-grid .card:nth-child(3){transform:none}
  .dyo-visual{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  .stagger-grid .card:nth-child(2),
  .stagger-grid .card:nth-child(3){transform:none}
}

/* ============================================================
   El Vault — landing feed + archive grid
   ============================================================ */

.vault-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.vault-card{
  text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:8px;
}
.vault-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--font-display);font-size:.75rem;color:var(--muted);
}
.tag{
  font-family:var(--font-display);font-size:.7rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--accent);
}
.tag::before{content:"[ "}
.tag::after{content:" ]"}
.vault-date{font-family:var(--font-display);color:var(--muted)}
.vault-empty{
  grid-column:1 / -1;text-align:center;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:12px;
}

@media (max-width:900px){
  .vault-grid{grid-template-columns:1fr}
}

/* ============================================================
   About + Contact — identity card, contact links
   ============================================================ */

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about-copy{display:flex;flex-direction:column;gap:20px;
  font-family:var(--font-body);color:var(--muted);font-size:1rem;line-height:1.7}
.about-highlight{color:var(--ink);font-weight:500;
  border-left:2px solid var(--accent);padding-left:16px}

.id-card{font-family:var(--font-display);font-size:.8rem}
.id-card-row{display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-top:1px solid var(--line)}
.id-card-row:first-child{border-top:0;padding-top:0}
.id-card-label{color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.id-card-value{color:var(--ink);text-align:right}

.contact-links{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contact-card{display:flex;flex-direction:column;gap:8px;
  text-decoration:none;color:inherit}
.contact-value{font-family:var(--font-display);font-size:1.1rem;font-weight:700;
  color:var(--ink);word-break:break-word;transition:color .2s}
.contact-card:hover .contact-value{color:var(--accent)}

@media (max-width:900px){
  .about-grid{grid-template-columns:1fr}
  .contact-links{grid-template-columns:1fr}
}