/* =========================
   HEADER (global)
   ========================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 999;
  backdrop-filter: blur(10px);
  background: rgba(7,10,18,.55);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.site-header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 16px;
}

.brand{
  text-decoration:none;
  display:flex;
  align-items:center;
}
.brand__name{
  font-weight: 900;
  letter-spacing: -0.02em;
  color: rgba(255,255,255,.92);
  text-shadow: 0 0 18px rgba(67,181,255,.22);
}

/* NAV */
.nav__menu{
  list-style:none;
  display:flex;
  align-items:center;
  gap: 16px;
  margin:0;
  padding:0;
}

.nav__menu a{
  color: rgba(255,255,255,.82);
  text-decoration:none;
  font-weight: 700;
  font-size: 14px;
  padding: 10px 10px;
  border-radius: 10px;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}

.nav__menu a:hover{
  color: rgba(255,255,255,.95);
  background: rgba(255,255,255,.06);
  box-shadow: 0 0 0 4px rgba(67,181,255,.10);
  transform: translateY(-1px);
}

/* Toggle button */
.nav__toggle{
  display:none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.06);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  gap: 5px;
}

.nav__toggle-bar{
  display:block;
  width: 18px;
  height: 2px;
  background: rgba(255,255,255,.85);
  border-radius: 2px;
}

/* Mobile */
@media (max-width: 768px){
  .nav__toggle{ display:flex; flex-direction:column; }

  .nav{
    position:absolute;
    top: 64px;
    right: 16px;
    left: 16px;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events:none;
    transition: opacity .18s ease, transform .18s ease;
  }

  .site-header.is-nav-open .nav{
    opacity: 1;
    transform: translateY(0);
    pointer-events:auto;
  }

  .nav__menu{
    flex-direction:column;
    align-items:stretch;
    background: rgba(0,0,0,.55);
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 18px 40px rgba(0,0,0,.45);
  }

  .nav__menu a{
    width:100%;
    padding: 12px 12px;
  }
}