body {
            background-color: #f8fafc;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
        }

        .navbar {
            padding: 0.8rem 1rem;
        }

        .navbar-brand {
            font-weight: bold;
            color: #0d6efd !important;
        }

        nav a {
            font-weight: 500;
        }

        main {
            min-height: 70vh;
        }

        footer {
            font-size: 0.9rem;
            background: #fff;
        }

        /* Sidebar */
        .tools-sidebar {
            position: sticky;
            top: 80px;
        }


              /* ===============================
   ARTICLE CONTENT STYLING
   =============================== */

        .article-content {
            font-family: "Inter", "Segoe UI", Roboto, sans-serif;
            color: #2c2c2c;
            line-height: 1.8;
            font-size: 1.05rem;
            background: #fff;
            padding: 2rem;
            border-radius: 1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            margin-top: 15px;
        }

        /* Headings */
        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4,
        .article-content h5,
        .article-content h6 {
            font-family: "Poppins", sans-serif;
            font-weight: 600;
            line-height: 1.3;
            color: #1a1a1a;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        .article-content h1 {
            font-size: 2rem;
            border-bottom: 3px solid #00a86b;
            display: inline-block;
            padding-bottom: 0.3rem;
        }

        .article-content h2 {
            font-size: 1.6rem;
            color: #00a86b;
        }

        .article-content h3 {
            font-size: 1.3rem;
            color: #333;
        }

        /* Paragraphs */
        .article-content p {
            margin-bottom: 1.2rem;
        }

        /* Links */
        .article-content a {
            color: #00a86b;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .article-content a:hover {
            color: #007e55;
            text-decoration: underline;
        }

        /* Images */
        .article-content img {
            max-width: 100%;
            border-radius: 0.8rem;
            margin: 1.5rem 0;
            display: block;
        }

        /* Lists */
        .article-content ul,
        .article-content ol {
            margin: 1.2rem 0 1.2rem 2rem;
        }

        .article-content li {
            margin-bottom: 0.6rem;
        }

        /* Blockquotes */
        .article-content blockquote {
            border-left: 5px solid #00a86b;
            background: #f9f9f9;
            padding: 1rem 1.5rem;
            font-style: italic;
            color: #555;
            border-radius: 0.5rem;
            margin: 1.5rem 0;
        }

        /* Code blocks */
        .article-content pre {
            background: #1e1e1e;
            color: #f8f8f2;
            padding: 1rem;
            border-radius: 0.6rem;
            overflow-x: auto;
            font-family: "Fira Code", monospace;
            font-size: 0.95rem;
        }

        .article-content code {
            background: #f3f3f3;
            padding: 0.2rem 0.4rem;
            border-radius: 0.3rem;
            font-family: "Fira Code", monospace;
            color: #d63384;
        }

        /* Tables */
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }

        .article-content th,
        .article-content td {
            border: 1px solid #eaeaea;
            padding: 0.8rem 1rem;
            text-align: left;
        }

        .article-content th {
            background: #00a86b;
            color: #fff;
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .article-content {
                padding: 1.2rem;
                font-size: 1rem;
            }

            .article-content h1 {
                font-size: 1.6rem;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }
        }