/* Header — NSBS — Transparent glass nav */
.header { position: sticky; top: 0; z-index: 100; background: rgba(10, 10, 15, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255, 255, 255, 0.04); transition: box-shadow 0.3s; }
.header.scrolled { box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4); }
.header .header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0 20px; height: 60px; max-width: 1120px; margin: 0 auto; }
.header .logo { display: flex; align-items: center; text-decoration: none; }
.header .logo img { height: 36px; width: auto; }
/* Mobile nav */
.header .nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: #12121a; border-bottom: 1px solid rgba(0, 212, 255, 0.1); padding: 8px 0; }
.header .nav.active { display: block; }
.header .nav .nav-list { list-style: none; padding: 0; margin: 0; }
.header .nav .nav-list li { border-bottom: 1px solid rgba(255, 255, 255, 0.03); }
.header .nav .nav-list li:last-child { border-bottom: none; }
.header .nav .nav-list a { display: block; padding: 12px 20px; color: #888; font-size: 14px; font-weight: 500; }
.header .nav .nav-list a:hover { color: #00d4ff; background: rgba(0, 212, 255, 0.04); }
.header .nav .nav-list .active-link { color: #00d4ff; }
.header .nav .dropdown-menu { list-style: none; padding-left: 0; margin: 0; display: none; background: rgba(0, 212, 255, 0.02); }
.header .nav .has-dropdown.open .dropdown-menu { display: block; }
.header .nav .dropdown-menu a { padding-left: 36px; font-size: 13px; color: #666; }
.header .nav .has-dropdown .dropdown-trigger { display: flex; align-items: center; justify-content: space-between; cursor: pointer; }
.header .nav .has-dropdown .dropdown-arrow { width: 7px; height: 7px; border-right: 1.5px solid #666; border-bottom: 1.5px solid #666; transform: rotate(45deg); transition: transform 0.2s; margin-right: 8px; }
.header .nav .has-dropdown.open .dropdown-arrow { transform: rotate(-135deg); }
/* Hamburger */
.header .hamburger { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 24px; height: 24px; cursor: pointer; z-index: 101; }
.header .hamburger .line { width: 22px; height: 2px; background: #ffffff; border-radius: 1px; transition: transform 0.3s, opacity 0.3s; }
.header .hamburger.active .line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header .hamburger.active .line:nth-child(2) { opacity: 0; }
.header .hamburger.active .line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* Desktop */
@media (min-width: 1024px) {
  .header .hamburger { display: none; }
  .header .nav { display: flex; position: static; background: transparent; border-bottom: none; padding: 0; }
  .header .nav .nav-list { display: flex; align-items: center; gap: 0; }
  .header .nav .nav-list li { border-bottom: none; }
  .header .nav .nav-list a { padding: 6px 14px; font-size: 13px; color: rgba(255, 255, 255, 0.6); border-radius: 4px; white-space: nowrap; }
  .header .nav .nav-list a:hover { color: #ffffff; background: rgba(255, 255, 255, 0.06); }
  .header .nav .nav-list .active-link { color: #00d4ff; }
  .header .nav .has-dropdown { position: relative; }
  .header .nav .has-dropdown .dropdown-arrow { margin-left: 4px; margin-right: 0; width: 6px; height: 6px; border-color: rgba(255, 255, 255, 0.4); }
  .header .nav .dropdown-menu { position: absolute; top: 100%; left: 0; min-width: 200px; background: #12121a; border: 1px solid rgba(255, 255, 255, 0.06); border-radius: 8px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4); padding: 6px 0; }
  .header .nav .dropdown-menu a { padding: 10px 18px; color: #888; font-size: 13px; border-radius: 0; }
  .header .nav .dropdown-menu a:hover { color: #00d4ff; background: rgba(0, 212, 255, 0.04); }
}