/* Custom styles for a clean, modern look */
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap');
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f7f9fc;
        }
        .grade-card {
            box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        input[type="number"]::-webkit-inner-spin-button,
        input[type="number"]::-webkit-outer-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }
        .result-box {
            background-color: #ecfdf5; /* Light green for positive result emphasis */
            border-left: 5px solid #059669; /* Green border */
            padding: 1rem;
            border-radius: 0.5rem;
        }
        .input-group-title {
            @apply text-xl font-bold text-gray-700 mb-4 border-b pb-2;
        }
        /* Modal styles */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 100;
        }
        .modal-content {
            max-height: 90vh;
            overflow-y: auto;
            max-width: 800px;
            width: 95%;
            padding: 1.5rem;
        }