/* ==========================================================================
   共通スタイル - common.css
   ヘッダー・フッター・関連リンク部分のみ
   ========================================================================== */

/* ヘッダー */
.header {
    background-color: #2c3e50;
    color: #fff;
    padding: 20px 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 24px;
    font-weight: bold;
    margin: 0 0 10px 0;
    color: #fff;
}

.header .subtitle {
    font-size: 16px;
    color: #bdc3c7;
    margin: 0;
    font-weight: normal;
}

/* ツールナビゲーション */
.tool-navigation {
    background-color: #34495e;
    padding: 15px 0;
    border-bottom: 1px solid #2c3e50;
}

.tool-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.tool-links li {
    margin: 0;
}

.tool-link {
    color: #ecf0f1;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 14px;
}

.tool-link:hover {
    background-color: #3498db;
    color: #fff;
    text-decoration: none;
}

.tool-link.active,
.tool-link.current {
    background-color: #e74c3c;
    color: #fff;
}

/* 関連ツールリンク（ページ内） */
h2#other{
    margin-top: 20px;
}

.related-tools {
    background-color: #f8f9fa;
    padding: 20px;
    margin: 30px 0;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.related-tools h3 {
    color: #2c3e50;
    font-size: 18px;
    margin: 0 0 15px 0;
    font-weight: bold;
}

.related-tools-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.related-tools-list li {
    margin: 0;
}

.related-tool-link {
    color: #3498db;
    text-decoration: none;
    padding: 6px 12px;
    border: 1px solid #3498db;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 13px;
}

.related-tool-link:hover {
    background-color: #3498db;
    color: #fff;
    text-decoration: none;
}

/* フッター */
.footer {
    background-color: #2c3e50;
    color: #bdc3c7;
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-title {
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    margin: 0 0 15px 0;
}

.footer-description {
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 20px 0;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    list-style: none;
    margin: 0 0 20px 0;
    padding: 0;
}

.footer-links li {
    margin: 0;
}

.footer-link {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #3498db;
    text-decoration: none;
}

.footer-copyright {
    font-size: 12px;
    color: #7f8c8d;
    margin: 0;
    padding-top: 15px;
    border-top: 1px solid #34495e;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .header {
        padding: 15px 0;
    }
    
    .header h1 {
        font-size: 20px;
    }
    
    .header .subtitle {
        font-size: 14px;
    }
    
    .tool-navigation {
        padding: 10px 0;
    }
    
    .tool-links {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .tool-link {
        padding: 10px 20px;
        width: 200px;
        text-align: center;
    }
    
    .related-tools {
        padding: 15px;
        margin: 20px 0;
    }
    
    .related-tools h3 {
        font-size: 16px;
    }
    
    .related-tools-list {
        flex-direction: column;
        gap: 8px;
    }
    
    .related-tool-link {
        text-align: center;
        padding: 8px 15px;
    }
    
    .footer {
        padding: 20px 0;
        margin-top: 30px;
    }
    
    .footer-content {
        padding: 0 15px;
    }
    
    .footer-title {
        font-size: 16px;
    }
    
    .footer-description {
        font-size: 13px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 18px;
    }
    
    .header .subtitle {
        font-size: 12px;
    }
    
    .tool-link {
        width: 100%;
        max-width: 250px;
    }
    
    .related-tools {
        margin: 15px 0;
    }
    
    .footer-links {
        gap: 8px;
    }
    
    .footer-link {
        font-size: 13px;
    }
}