.header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-subtle);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.brand-logo .accent-dot {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 8px 0;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

@media (max-width: 640px) {
  .header {
    height: auto;
  }

  .header-container {
    flex-wrap: wrap;
    row-gap: 10px;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
  }
}