/* ============================================================
   NICAS DESIGN — header.css
   Header sticky + nav + mega menu + drawer mobile.
   ============================================================ */

.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  transition:background var(--dur-base) var(--ease-out),
             backdrop-filter var(--dur-base) var(--ease-out),
             border-color var(--dur-base) var(--ease-out),
             height var(--dur-base) var(--ease-out);
  border-bottom:1px solid transparent;
  height:88px;
}
.site-header.is-scrolled{
  height:64px;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
          backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:var(--bd-1);
}
.site-header.is-scrolled::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(121,81,171,.6),rgba(53,177,230,.5),transparent);
  opacity:.6;
}

/* Barra de progreso scroll */
.site-header__progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;background:transparent;
}
.site-header__progress-bar{
  display:block;height:100%;width:0%;
  background:var(--grad-brand-3);
  transition:width 80ms linear;
  box-shadow:0 0 12px rgba(121,81,171,.6);
}

.site-header__inner{
  height:100%;
  display:flex;align-items:center;gap:2rem;
}

/* ---------- BRAND ---------- */
.brand{
  display:inline-flex;align-items:center;gap:.7rem;
  flex-shrink:0;
  transition:opacity var(--dur-fast) var(--ease-out);
}
.brand:hover{opacity:.85}
.brand__mark{
  display:grid;place-items:center;
  transition:transform var(--dur-slow) var(--ease-out);
}
.brand:hover .brand__mark{transform:rotate(15deg)}
.brand__text{
  display:flex;flex-direction:column;
  font-family:var(--font-display);
  line-height:1;
  letter-spacing:.04em;
}
.brand__text strong{font-weight:700;font-size:1rem;color:var(--tx-100)}
.brand__text span{font-weight:500;font-size:.7rem;color:var(--tx-300);letter-spacing:.24em;margin-top:3px}

/* ---------- NAV DESKTOP ---------- */
.nav-desktop{margin-left:auto}
.nav-desktop__list{display:flex;align-items:center;gap:.25rem}
.nav-desktop__link{
  position:relative;
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.6rem .95rem;
  font-size:.9rem;font-weight:500;
  color:var(--tx-300);
  border-radius:8px;
  transition:color var(--dur-fast) var(--ease-out);
}
.nav-desktop__link::after{
  content:"";position:absolute;left:50%;bottom:.35rem;
  width:0;height:2px;background:var(--grad-brand);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width var(--dur-base) var(--ease-out);
}
.nav-desktop__link:hover{color:var(--tx-100)}
.nav-desktop__link:hover::after{width:calc(100% - 1.9rem)}
.nav-desktop__link.is-active{color:var(--tx-100)}
.nav-desktop__link.is-active::after{width:calc(100% - 1.9rem)}
.nav-desktop__chev{transition:transform var(--dur-base) var(--ease-out);opacity:.7}
.has-mega:hover .nav-desktop__chev,
.has-mega.is-open .nav-desktop__chev{transform:rotate(180deg)}

/* ---------- CTA HEADER ---------- */
.header-cta{flex-shrink:0}

/* ---------- HAMBURGUESA ---------- */
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  position:relative;
  border-radius:8px;
  transition:background var(--dur-fast) var(--ease-out);
}
.nav-toggle:hover{background:rgba(255,255,255,.04)}
.nav-toggle span{
  position:absolute;left:50%;
  width:20px;height:1.5px;background:var(--tx-200);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform var(--dur-base) var(--ease-out),
             opacity var(--dur-fast) var(--ease-out),
             top var(--dur-base) var(--ease-out);
}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:21.5px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.is-open span:nth-child(1){top:21.5px;transform:translateX(-50%) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:21.5px;transform:translateX(-50%) rotate(-45deg)}

/* ---------- MEGA MENU ---------- */
.mega-menu{
  position:absolute;
  top:100%;left:0;right:0;
  background:linear-gradient(180deg,rgba(11,14,20,.97) 0%,rgba(11,14,20,.94) 100%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
          backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid var(--bd-1);
  opacity:0;visibility:hidden;
  transform:translateY(-8px);
  transition:opacity var(--dur-base) var(--ease-out),
             transform var(--dur-base) var(--ease-out),
             visibility 0s linear var(--dur-base);
  pointer-events:none;
}
.site-header.is-mega-open .mega-menu{
  opacity:1;visibility:visible;transform:translateY(0);
  transition-delay:0s;
  pointer-events:auto;
}
.mega-menu::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(121,81,171,.6),rgba(53,177,230,.5),transparent);
}
.mega-menu__inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:2.5rem;
  padding-block:2.5rem 2rem;
}
.mega-menu__heading{
  font-size:.75rem;
  font-family:var(--font-mono);
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--tx-400);
  margin-bottom:1rem;
  padding-left:.65rem;
  position:relative;
}
.mega-menu__heading::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:12px;border-radius:2px;
  background:var(--grad-brand);
}
.mega-menu__list{display:flex;flex-direction:column;gap:.15rem}
.mega-menu__item{
  display:flex;gap:.85rem;
  padding:.7rem .65rem;
  border-radius:10px;
  transition:background var(--dur-fast) var(--ease-out),
             transform var(--dur-fast) var(--ease-out);
  position:relative;
}
.mega-menu__item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:2px;height:70%;
  background:var(--grad-brand);
  border-radius:2px;
  transition:transform var(--dur-base) var(--ease-out);
  transform-origin:center;
}
.mega-menu__item:hover{
  background:rgba(121,81,171,.06);
  transform:translateX(4px);
}
.mega-menu__item:hover::before{transform:translateY(-50%) scaleY(1)}
.mega-menu__item.is-soon{opacity:.5;cursor:not-allowed}
.mega-menu__item.is-soon:hover{background:transparent;transform:none}
.mega-menu__item.is-soon:hover::before{transform:translateY(-50%) scaleY(0)}

.mega-menu__icon{
  flex-shrink:0;
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:8px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--bd-1);
  color:var(--tx-300);
  transition:all var(--dur-base) var(--ease-out);
}
.mega-menu__item:hover .mega-menu__icon{
  color:var(--cyan);
  border-color:var(--bd-cyan);
  background:rgba(53,177,230,.06);
  box-shadow:0 0 20px rgba(53,177,230,.18);
}
.mega-menu__body{display:flex;flex-direction:column;gap:.15rem;min-width:0}
.mega-menu__title{
  font-size:.9rem;font-weight:500;color:var(--tx-100);
  display:flex;align-items:center;flex-wrap:wrap;
}
.mega-menu__desc{font-size:.78rem;color:var(--tx-400);line-height:1.4}

.mega-menu__foot{
  display:flex;align-items:center;justify-content:space-between;
  padding-block:1rem 1.25rem;
  border-top:1px solid var(--bd-1);
}
.mega-menu__cta{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.875rem;color:var(--cyan);
  transition:gap var(--dur-base) var(--ease-out);
}
.mega-menu__cta:hover{gap:.85rem}

/* ---------- DRAWER MOBILE ---------- */
.mobile-menu{
  position:fixed;inset:0;
  z-index:200;
  background:var(--bg-000);
  transform:translateX(100%);
  transition:transform var(--dur-slow) var(--ease-out);
  overflow-y:auto;
  overscroll-behavior:contain;
  display:flex;flex-direction:column;
}
.mobile-menu.is-open{transform:translateX(0)}
.mobile-menu__inner{
  padding:96px var(--pad-x) 2rem;
  display:flex;flex-direction:column;gap:1.5rem;
  flex:1;
}
.mobile-menu__link{
  display:block;
  padding:1rem 0;
  font-family:var(--font-display);
  font-size:1.5rem;font-weight:500;
  color:var(--tx-200);
  border-bottom:1px solid var(--bd-1);
  transition:color var(--dur-fast) var(--ease-out);
}
.mobile-menu__link:hover,.mobile-menu__link.is-active{color:var(--tx-100)}
.mobile-menu__link.is-active{
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.mobile-acc{border-bottom:1px solid var(--bd-1)}
.mobile-acc__trigger{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;padding:1rem 0;
  font-family:var(--font-display);
  font-size:1.5rem;font-weight:500;
  color:var(--tx-200);
  text-align:left;
}
.mobile-acc__trigger svg{transition:transform var(--dur-base) var(--ease-out);color:var(--tx-400)}
.mobile-acc__trigger[aria-expanded="true"] svg{transform:rotate(180deg)}
.mobile-acc__panel{
  max-height:0;overflow:hidden;
  transition:max-height var(--dur-slow) var(--ease-out);
}
.mobile-acc__group{padding:.75rem 0 1rem}
.mobile-acc__group ul{display:flex;flex-direction:column;gap:.25rem;margin-top:.6rem}
.mobile-acc__group a{
  display:block;padding:.5rem .75rem;
  font-size:.95rem;color:var(--tx-300);
  border-left:1px solid var(--bd-1);
  transition:all var(--dur-fast) var(--ease-out);
}
.mobile-acc__group a:hover{color:var(--tx-100);border-left-color:var(--bd-brand);padding-left:1rem}
.mobile-acc__group a.is-soon{opacity:.55}

.mobile-menu__foot{
  margin-top:auto;padding-top:2rem;
  display:flex;flex-direction:column;gap:1.25rem;
}
.mobile-menu__meta{
  display:flex;justify-content:space-between;
  color:var(--tx-400);
}

.mobile-menu__veil{
  position:fixed;inset:0;z-index:150;
  background:rgba(7,8,12,.6);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  opacity:0;pointer-events:none;
  transition:opacity var(--dur-base) var(--ease-out);
}
.mobile-menu__veil.is-open{opacity:1;pointer-events:auto}

/* ---------- RESPONSIVE ---------- */
@media (max-width:991px){
  .site-header{height:72px}
  .nav-desktop,.header-cta{display:none}
  .nav-toggle{display:block}
  .mega-menu{display:none}
}
@media (max-width:480px){
  .site-header{height:64px}
  .brand__text strong{font-size:.9rem}
  .brand__text span{font-size:.62rem}
}