header {
    /* Glassmorphism Effect */
    background: rgba(5, 5, 5, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    
    border-bottom: 1px solid var(--border-subtle);
    padding: 18px 40px;
    
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-logo {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: opacity 0.2s ease;
}

.header-logo:hover {
    opacity: 0.8;
}