/* Header Styles */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    text-decoration: none;
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.logo-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-item {
    text-decoration: none;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 600;
    transition: 0.3s;
}

.nav-item:hover {
    color: var(--text-main);
    text-shadow: 0 0 10px var(--accent-cyan);
}

.nav-item.spec {
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 128, 0.3);
    padding: 6px 15px;
    border-radius: 8px;
    background: rgba(0, 255, 128, 0.05);
}

.nav-item.spec:hover {
    background: rgba(0, 255, 128, 0.1);
    box-shadow: 0 0 15px rgba(0, 255, 128, 0.2);
}

@media (max-width: 600px) {
    .header-links { gap: 15px; }
    .nav-item { font-size: 0.8rem; }
}