.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(0.6rem);
  background: linear-gradient(180deg, rgba(8, 10, 12, 0.82) 0%, rgba(8, 10, 12, 0.4) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  min-height: 4.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
}

.brand-logo {
  height: 5rem;
  width: auto;
  max-width: rem;
  object-fit: contain;
  object-position: center;
  transition: transform 0.22s ease;
}

.brand:hover .brand-logo {
  transform: scale(1.05);
}

.nav-links {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.6rem);
}

.nav-links a {
  color: #d6dde4;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--text-main);
}

/* Menu Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 0.4rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 30;
}

.menu-toggle span {
  width: 1.5rem;
  height: 0.2rem;
  background-color: var(--text-main);
  border-radius: 0.1rem;
  transition: all 0.3s ease;
  display: block;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(0.6rem, 0.6rem);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(0.5rem, -0.5rem);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 4.6rem;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, rgba(8, 10, 12, 0.98) 0%, rgba(8, 10, 12, 0.95) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1.5rem;
  z-index: 25;
  max-height: calc(100vh - 4.6rem);
  overflow-y: auto;
}

.mobile-menu.active {
  display: block;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.mobile-nav-links li a {
  display: block;
  color: #d6dde4;
  font-weight: 600;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: color 0.2s ease;
}

.mobile-nav-links li a:hover {
  color: var(--text-main);
}

.mobile-btn-app {
  width: 100%;
  text-align: center;
}

@media (max-width: 54rem) {
  .nav {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav .btn-outline {
    display: none;
  }
}