.header-nav {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 2rem);
  max-width: 700px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.25rem;
  background: rgba(10, 20, 38, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: 50px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.header-brand {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-brand:hover {
  color: var(--cyan);
}

.header-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.header-links a {
  padding: 0.35rem 0.75rem;
  border-radius: 30px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: all var(--transition);
  white-space: nowrap;
}

.header-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.header-links a.active {
  color: var(--cyan);
}

.header-btn {
  background: linear-gradient(135deg, var(--cyan-dark), var(--cyan)) !important;
  color: #fff !important;
  padding: 0.35rem 1rem !important;
  font-weight: 600 !important;
  border-radius: 30px !important;
  border: none !important;
  cursor: pointer !important;
  font-family: inherit !important;
  font-size: 0.82rem !important;
  white-space: nowrap !important;
  text-decoration: none !important;
}

.header-btn:hover {
  box-shadow: 0 2px 12px rgba(6, 182, 212, 0.3);
  color: #fff !important;
}

@media (max-width: 600px) {
  .header-inner {
    padding: 0.5rem 1rem;
  }

  .header-links a:not(.header-btn) {
    display: none;
  }

  .header-links a[href="/"],
  .header-links a.header-btn,
  .header-links button.header-btn {
    display: flex;
  }
}