.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148,163,184,0.15);
  z-index: 1000;
}

@media (max-width: 768px) {
  .site-header {
    height: 60px;
  }
}

[data-theme="light"] .site-header {
  background: rgba(248, 250, 252, 0.85);
}

.nav-inner {
  max-width: 1100px;
  height: 100%;
  margin: auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (max-width: 768px) {
  .site-header {
    height: 60px;
  }
}

.logo {
  font-weight: 1000;
  font-size: 1.2rem;
  letter-spacing: 0.5px;
  color: var(--text);
}

.nav-icons {
  display: flex;
  gap: 1.4rem;
  align-items: center;
}

.nav-icons a,
.nav-icons i {
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
}

.nav-icons a:hover,
.nav-icons i:hover {
  color: var(--accent);
}

.theme-toggle {
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--muted);
}