.main-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.drop-zone {
    border: 2px dashed #0d6efd;
    padding: 30px;
    text-align: center;
    border-radius: 10px;
    transition: 0.3s;
    cursor: pointer;
}
.drop-zone.dragover {
    background-color: #e9ecef;
    border-color: #0a58ca;
}

.btn-link:hover .bi-question-circle-fill {
    color: #0d6efd !important; /* Primary Blue */
    transform: scale(1.1);
    transition: all 0.2s ease-in-out;
}