/* SEO Navigation Styles */
.seo-nav {
    background-color: #0d1117;
    padding: 48px 0;
    color: #8b949e;
    -webkit-font-smoothing: antialiased;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.seo-nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.seo-nav-title {
    color: #e6edf3;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: -0.022em;
}

/* Alphabet navigation */
.seo-nav-alphabet {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 0 auto;
}

.seo-nav-letter {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: #8b949e;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.seo-nav-letter.active {
    background-color: rgba(88, 166, 255, 0.1);
    color: #58a6ff;
}

.seo-nav-letter.active:hover {
    background-color: rgba(88, 166, 255, 0.2);
    color: #58a6ff;
    transform: translateY(-2px);
}

.seo-nav-letter.disabled {
    opacity: 0.4;
    cursor: default;
}

/* Tool sections */
.seo-nav-sections {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.seo-nav-section {
    margin-bottom: 16px;
}

.seo-section-title {
    color: #e6edf3;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.seo-tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.seo-tool-link {
    color: #8b949e;
    font-size: 14px;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: rgba(255, 255, 255, 0.03);
}

.seo-tool-link:hover {
    color: #58a6ff;
    background-color: rgba(88, 166, 255, 0.1);
    transform: translateY(-2px);
}

/* Responsive styles */
@media (max-width: 1068px) {
    .seo-nav {
        padding: 40px 0;
    }
    
    .seo-nav-title {
        font-size: 22px;
    }
    
    .seo-tool-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 734px) {
    .seo-nav {
        padding: 32px 0;
    }
    
    .seo-nav-title {
        font-size: 20px;
    }
    
    .seo-nav-alphabet {
        gap: 8px;
    }
    
    .seo-nav-letter {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .seo-tool-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 374px) {
    .seo-nav-title {
        font-size: 18px;
    }
    
    .seo-nav-letter {
        width: 32px;
        height: 32px;
        font-size: 12px;
    }
    
    .seo-tool-grid {
        grid-template-columns: 1fr 1fr;
    }
}