/* CSS Variables for Color Scheme */
    :root {
        --primary-color: #0074D9;
        --secondary-color: #1F4E79;
        --success-color: #2ECC40;
        --neutral-color: #5A6268;
        --accent-color: #FF851B;
        --background-gradient: linear-gradient(135deg, #0074D9, #1F4E79);
        --section-bg: #f5f5f5;
        --text-color: #ffffff;
        --border-radius: 8px;
        --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        --transition-speed: 0.3s;
        --font-family: 'Roboto', 'Open Sans', sans-serif;
    }

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

    body {
        font-family: var(--font-family);
        line-height: 1.6;
        background-color: var(--neutral-color);
        color: var(--text-color);
        overflow-x: hidden;
    }

    h1, h2, h3, h4 {
        color: var(--primary-color);
        margin-bottom: 1rem;
        font-weight: 700;
    }

    p {
        font-size: 16px;
        margin-bottom: 1rem;
        color: #333;
    }

    pre {
        background: #2ECC40;
        padding: 1rem;
        border-radius: var(--border-radius);
        overflow-x: auto;
        margin-bottom: 1rem;
        box-shadow: var(--box-shadow);
    }

    code {
        background-color: #f0f0f0;
        padding: 0.2rem 0.4rem;
        border-radius: 4px;
        color: #d63384;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 1rem;
    }

    th, td {
        padding: 0.75rem;
        text-align: left;
        border-bottom: 1px solid #ddd;
    }

    th {
        background-color: var(--secondary-color);
        color: var(--text-color);
    }

    /* Layout Styles */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 2rem;
    }

    article {
        background: var(--section-bg);
        padding: 2rem;
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        margin-bottom: 2rem;
        animation: fadeIn 1s ease-in-out;
    }

    section {
        margin-bottom: 2rem;
        padding-bottom: 2rem;
        position: relative;
    }

    section::after {
        content: '';
        display: block;
        height: 2px;
        background: var(--accent-color);
        width: 50px;
        margin: 1rem auto 0;
        border-radius: 2px;
    }

    /* Image Styles */
    img {
        max-width: 100%;
        height: auto;
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }

    img:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
    }

    /* Responsive Grid for Images */
    .image-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }

    /* Typography */
    .highlight {
        color: var(--success-color);
        font-weight: bold;
    }

    /* Buttons */
    .button {
        display: inline-block;
        padding: 0.75rem 1.5rem;
        background: var(--primary-color);
        color: var(--text-color);
        border: none;
        border-radius: var(--border-radius);
        cursor: pointer;
        transition: background var(--transition-speed), transform var(--transition-speed);
        text-decoration: none;
    }

    .button:hover {
        background: var(--accent-color);
        transform: translateY(-2px);
    }

    /* Footer */
    footer {
        text-align: center;
        padding: 2rem 0;
        background: var(--secondary-color);
        color: var(--text-color);
    }

    /* Animation */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    /* Responsive Styles */
    @media (max-width: 768px) {
        .container {
            padding: 1rem;
        }

        h1 {
            font-size: 2rem;
        }

        h2 {
            font-size: 1.75rem;
        }

        h3 {
            font-size: 1.5rem;
        }

        p, code, th, td {
            font-size: 14px;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.5rem;
        }

        h2 {
            font-size: 1.25rem;
        }

        h3 {
            font-size: 1rem;
        }

        p, code, th, td {
            font-size: 12px;
        }
    }

    /* Decorative Elements */
    .decorative-line {
        height: 4px;
        background: var(--accent-color);
        width: 100px;
        margin: 1rem auto;
        border-radius: 2px;
    }

    /* Tooltip */
    .tooltip {
        position: relative;
        display: inline-block;
        cursor: pointer;
    }

    .tooltip::after {
        content: attr(data-tooltip);
        position: absolute;
        bottom: 125%;
        left: 50%;
        transform: translateX(-50%);
        background: var(--secondary-color);
        color: var(--text-color);
        padding: 0.5rem;
        border-radius: var(--border-radius);
        white-space: nowrap;
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-speed);
    }

    .tooltip:hover::after {
        opacity: 1;
        visibility: visible;
    }