/* CSS Variables for Dark Theme */
    :root {
        --bg-color: #121212;
        --text-color: #e0e0e0;
        --card-bg: #222222;
        --accent-color: #bb86fc;
    }

    /* Base Styles */
    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        background-color: var(--bg-color);
        color: var(--text-color);
        margin: 0;
        padding: 20px;
        line-height: 1.6;
    }

    .container {
        max-width: 1100px;
        margin: 0 auto;
    }

    header {
        text-align: center;
        padding: 40px 0;
    }

    /* Flexbox Grid */
    .grid {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .card {
        background-color: var(--card-bg);
        padding: 25px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }

    .card h2 {
        color: var(--accent-color);
        margin-top: 0;
        color: #29A838;
    }

    /* Tablet Breakpoint (768px and wider) */
    @media (min-width: 768px) {
        .grid {
            flex-direction: row;
            flex-wrap: wrap;
        }

        .card {
            flex: 1 1 45%; /* Two cards per row */
        }
    }

    /* Desktop Breakpoint (1024px and wider) */
    @media (min-width: 1024px) {
        .card {
            flex: 1 1 30%; /* Three cards per row */
        }
    }