.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.logo:hover {
    transform: translateY(-1px);
}

.logo-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-codeforge {
    color: var(--color-codeforge);
}

.logo-x {
    color: var(--color-x);
}

.logo-studio {
    color: var(--color-studio);
    margin-left: 4px;
    font-weight: 500;
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-list a {
    display: block;
    padding: 10px 18px;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-list a:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-list a.active {
    color: var(--color-accent);
    background: rgba(0, 212, 255, 0.1);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    color: var(--color-accent);
}

.main-content {
    flex: 1;
    margin-top: var(--header-height);
}

.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 80px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 100px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    max-width: 400px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 14px;
}

.footer-column a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

.footer-column a i {
    font-size: 1.125rem;
    width: 18px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-links {
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 24px;
        display: none;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    }

    .nav-list.active {
        display: flex;
    }

    .nav-list a {
        padding: 14px 20px;
        font-size: 1rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}