/* CSS Variables for Colors */
    :root {
        --primary-color: #0A2463;
        --secondary-color: #F5F7FA;
        --accent-color: #FF9900;
        --background-gradient: radial-gradient(circle, rgb(0, 162, 255), rgb(0, 123, 255));
        --font-primary: 'Poppins', sans-serif;
        --font-secondary: 'Inter', sans-serif;
    }

    /* Global Styles */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-secondary);
        background: var(--secondary-color);
        color: var(--primary-color);
        line-height: 1.6;
        padding: 20px;
        transition: background 0.5s ease;
    }

    /* Container */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(12, 1fr);
        gap: 20px;
    }

    /* Header */
    header {
        grid-column: 1 / -1;
        background: var(--primary-color);
        color: white;
        padding: 40px 20px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    header::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--background-gradient);
        opacity: 0.1;
        animation: move-background 15s linear infinite;
    }

    header h1 {
        font-family: var(--font-primary);
        font-size: 2.5rem;
        z-index: 1;
        position: relative;
    }

    /* Navigation */
    nav {
        grid-column: 1 / -1;
        background: var(--secondary-color);
        padding: 10px 20px;
        text-align: center;
        position: sticky;
        top: 0;
        z-index: 1000;
    }

    nav ul {
        list-style: none;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
    }

    nav ul li {
        margin: 0 15px;
    }

    nav ul li a {
        text-decoration: none;
        color: var(--primary-color);
        font-weight: bold;
        transition: color 0.3s ease;
    }

    nav ul li a:hover {
        color: var(--accent-color);
    }

    /* Main Content */
    main {
        grid-column: 2 / 10;
        background: white;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

    main h2, main h3, main h4 {
        font-family: var(--font-primary);
        color: var(--primary-color);
        margin-bottom: 15px;
    }

    main p {
        margin-bottom: 15px;
    }

    main pre {
        background: #f0f0f0;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    main pre code {
        font-family: 'Courier New', Courier, monospace;
        color: var(--primary-color);
    }

    /* Sidebar */
    aside {
        grid-column: 10 / 13;
        background: var(--secondary-color);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

    aside h3 {
        font-family: var(--font-primary);
        color: var(--primary-color);
        margin-bottom: 15px;
    }

    aside ul {
        list-style: none;
    }

    aside ul li {
        margin-bottom: 10px;
    }

    aside ul li span {
        font-weight: bold;
    }

    /* Footer */
    footer {
        grid-column: 1 / -1;
        background: var(--primary-color);
        color: white;
        text-align: center;
        padding: 20px;
        margin-top: 20px;
        border-radius: 10px;
    }

    /* Images */
    .images-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
        margin-bottom: 20px;
    }

    .images-grid img {
        width: 100%;
        height: auto;
        border-radius: 5px;
    }

    /* Responsive Design */
    @media (max-width: 1440px) {
        main {
            grid-column: 2 / 11;
        }

        aside {
            grid-column: 11 / -1;
        }
    }

    @media (max-width: 1200px) {
        .container {
            grid-template-columns: repeat(12, 1fr);
        }
    }

    @media (max-width: 1024px) {
        main {
            grid-column: 1 / -1;
        }

        aside {
            grid-column: 1 / -1;
            margin-top: 20px;
        }
    }

    @media (max-width: 768px) {
        nav ul {
            flex-direction: column;
        }

        nav ul li {
            margin: 10px 0;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 2rem;
        }

        main, aside {
            padding: 15px;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.5rem;
        }

        nav ul li a {
            font-size: 0.9rem;
        }
    }

    /* Keyframes for Background Animation */
    @keyframes move-background {
        0% {
            transform: rotate(0deg);
        }
        100% {
            transform: rotate(360deg);
        }
    }

    /* Button Styles */
    .button {
        background-color: var(--accent-color);
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.3s ease, background-color 0.3s ease;
    }

    .button:hover {
        transform: scale(1.1);
        background-color: #e68a00;
    }

    /* Code Block Styles */
    pre {
        background: #2d2d2d;
        color: #f8f8f2;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        font-family: 'Source Code Pro', monospace;
        font-size: 0.9rem;
    }

    /* Article Sample */
    .sample-article {
        margin-top: 40px;
    }

    .sample-article h2 {
        font-size: 2rem;
        margin-bottom: 20px;
    }

    .sample-article p {
        margin-bottom: 15px;
    }

    .sample-article pre {
        margin-bottom: 15px;
    }

    .note {
        background: #fff3cd;
        padding: 10px;
        border-left: 5px solid #ffeeba;
        margin-bottom: 20px;
        border-radius: 3px;
    }