:root {
            --bg-primary: #e0edff;
            --text-dark: #9900ff;
            --card-bg: #eaa6ff;
            --radius: 12px;
            --shadow: 0 4px 6px -1px rgb(200, 128, 255), 0 2px 4px -1px #b300ff;
}

* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

        body {
            background-color: var(--bg-primary);
            color: var(--text-dark);
            line-height: 1.6;
            padding: 2rem 1rem;
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
        }

        /* Typography & Hierarchy */
        header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        h1 {
            font-size: 2.5rem;
            color: #1a202c;
            margin-bottom: 0.5rem;
        }

        .subtitle {
            color: #718096;
            font-size: 1.1rem;
        }

        .controls {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin-bottom: 2rem;
        }

        select {
            padding: 0.75rem 1.5rem;
            font-size: 1rem;
            border: 2px solid #b356ff;
            border-radius: var(--radius);
            background-color: rgb(235, 200, 255);
            cursor: pointer;
            outline: none;
            transition: border-color 0.2s;
        }

        select:focus {
            border-color: var(--accent-blue);
        }

        .dashboard {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        @media (max-width: 600px) {
            .dashboard {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: var(--card-bg);
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform 0.2s;
        }

        .card:hover {
            transform: translateY(-2px);
        }

        .card h2 {
            font-size: 1.25rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #e8369e;
            margin-bottom: 1rem;
            border-bottom: 2px solid #f5edf7;
            padding-bottom: 0.5rem;
        }

        /* Dynamic Data Styling */
        .display-value {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent-blue);
            margin: 0.5rem 0;
        }

        .advice-box {
            font-size: 1.2rem;
            font-weight: 600;
            color: #7c24b3;
            background: #f3d7ff;
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            border-left: 4px solid var(--accent-blue);
        }

        .loader {
            text-align: center;
            grid-column: 1 / -1;
            font-size: 1.2rem;
            color: var(--accent-blue);
            padding: 2rem;
            display: none;
        }