@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&family=Open+Sans:wght@400;700&display=swap');

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

    body {
        font-family: 'Roboto', 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #fff;
        line-height: 1.6;
        overflow-x: hidden;
    }

    header {
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
        background: radial-gradient(circle at center, rgba(30, 60, 114, 0.8), transparent);
        animation: aurora-move 15s linear infinite;
    }

    header h1 {
        font-size: 3rem;
        text-align: center;
        position: relative;
        z-index: 2;
        color: #fff;
    }

    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    .content {
        padding: 50px 20px;
        background: linear-gradient(135deg, #2a5298, #1e3c72);
    }

    .card-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        margin-top: 30px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        transition: transform 0.3s, box-shadow 0.3s;
    }

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

    .card img {
        width: 100%;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .card h3 {
        margin-bottom: 10px;
        font-size: 1.5rem;
    }

    .card p {
        font-size: 1rem;
    }

    pre {
        background: rgba(0,0,0,0.5);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #00ff8f;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 20px;
    }

    table, th, td {
        border: 1px solid #fff;
    }

    th, td {
        padding: 10px;
        text-align: left;
    }

    th {
        background: rgba(0,0,0,0.3);
    }

    /* Responsive Styles */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.5rem;
        }
    }

    @media (max-width: 1200px) {
        .content {
            padding: 40px 15px;
        }
    }

    @media (max-width: 1024px) {
        .card-container {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 2rem;
        }

        .card h3 {
            font-size: 1.2rem;
        }
    }

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

        .card h3 {
            font-size: 1rem;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.2rem;
        }

        .card p {
            font-size: 0.9rem;
        }
    }