.portfolio-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  background-color: rgba(2, 15, 20, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  padding: 0 40px;
  z-index: 1000;
  border-bottom: 1px solid var(--secondary);
}

.header-logo {
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: transform 0.2s;
}

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

.logo-svg {
  filter: drop-shadow(0 0 5px var(--accent));
}

@media (max-width: 700px) {
  .portfolio-header {
    padding: 0 20px;
  }
}