.nav{
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(0,0,0,.72), rgba(0,0,0,0));
  backdrop-filter: blur(6px);
}

.nav__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 12px;
}

.brand__icon{
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,.6));
}

.brand__name{
  font-weight: 900;
  font-size: 34px;
  color: var(--accent);
  letter-spacing: .5px;
  text-transform: lowercase;
}

.nav__menu{
  display:flex;
  align-items:center;
  gap: 34px;
}

.nav__link{
  font-size: 14px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255,255,255,.85);
  padding: 10px 6px;
  position: relative;
}

.nav__link:hover{ color: #fff; }

.nav__link.is-active::after{
  content:"";
  position:absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 3px;
  background: var(--accent);
  box-shadow: 0 0 30px rgba(184,255,72,.25);
}

.nav__dropdown{ position: relative; }
.nav__link--btn{
  border:0;
  background:transparent;
  cursor:pointer;
  font: inherit;
}

.nav__caret{ margin-left: 6px; opacity: .9; }

/* Burger (mobile) */
.nav__burger{
  display:none;
  width: 46px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 12px;
  cursor: pointer;
  padding: 8px;
  gap: 6px;
  flex-direction: column;
  justify-content: center;
}
.nav__burger span{
  height: 2px;
  width: 100%;
  background: rgba(255,255,255,.85);
  display:block;
}

/* ===== Mega menu ===== */
.mega{
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  width: min(760px, calc(100vw - 36px));
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(10,10,10,.92);
  box-shadow: var(--shadow-soft);
  padding: 14px;
  display: none;
  overflow: hidden;
}

.nav__dropdown.is-open .mega{ display:block; }

.mega__grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mega__item{
  display: block;
  padding: 14px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.02);
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}

.mega__item:hover{
  transform: translateY(-1px);
  border-color: rgba(184,255,72,.28);
  background: rgba(184,255,72,.06);
}

.mega__item.is-current{
  border-color: rgba(184,255,72,.38);
  background: rgba(184,255,72,.08);
}

.mega__title{
  display:block;
  font-weight: 900;
  letter-spacing: .2px;
  color: rgba(255,255,255,.92);
}

.mega__desc{
  display:block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(255,255,255,.62);
  line-height: 1.3;
}

/* CTA dentro del mega menu */
.mega__cta{
  grid-column: 1 / -1;
  padding: 16px 16px;
  border-radius: 16px;
  border: 1px solid rgba(184,255,72,.22);
  background:
    radial-gradient(700px 180px at 30% 0%, rgba(184,255,72,.10), transparent 60%),
    rgba(255,255,255,.02);
}

.mega__ctaTitle{
  display:block;
  font-weight: 900;
  color: rgba(255,255,255,.95);
  margin-bottom: 4px;
}

.mega__ctaDesc{
  display:block;
  color: rgba(255,255,255,.68);
  font-size: 13px;
}

.mega__ctaBtn{
  display:inline-block;
  margin-top: 10px;
  font-weight: 900;
  color: var(--accent);
}

/* Mobile menu */
@media (max-width: 980px){
  .nav__burger{ display:flex; }

  .nav__menu{
    position: absolute;
    top: 72px;
    right: 18px;
    left: 18px;
    flex-direction: column;
    gap: 14px;
    padding: 14px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(0,0,0,.88);
    display:none;
  }
  .nav__menu.is-open{ display:flex; }

  .nav__link.is-active::after{ bottom: -4px; }

  .mega{
    position: static;
    width: 100%;
    margin-top: 6px;
    box-shadow: none;
    padding: 10px;
  }
  .mega__grid{ grid-template-columns: 1fr; }
}