.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
}

.site-header.is-scrolled .header-inner {
  background: rgba(5, 8, 7, 0.55);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 255, 136, 0.15);
}

.site-header::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 12px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 255, 136, 0.3),
    transparent
  );
  opacity: 0.6;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 20px;
  transition: 0.3s ease;
}

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

.brand-icon {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: inline-flex;
}

.brand-icon-svg,
.brand-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.brand-text {
  font-size: 22px;
  font-weight: 800;
  color: #00ff88;
  text-shadow: 0 0 8px rgba(0, 255, 136, 0.18);
}

.header-nav {
  display: inline-flex;
  align-items: center;
  gap: 24px;
}

.header-nav a {
  font-size: 15px;
  line-height: 1.2;
  color: #d8fff0;
  transition: 0.25s ease;
}

.header-nav a:hover {
  color: #00ff88;
  text-shadow: 0 0 8px rgba(0, 255, 136, 0.2);
}

@media (max-width: 768px) {
  .site-header {
    padding-top: 10px;
  }

  .header-inner {
    min-height: auto;
    padding: 12px 14px;
    border-radius: 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .brand {
    gap: 10px;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
  }

  .brand-text {
    font-size: 18px;
  }

  .header-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 10px 14px;
  }

  .header-nav a {
    font-size: 14px;
  }
}