.material-header {
    border: 1px solid #ddd;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    padding: 0.75rem;
    background-color: #fafafa;
    transition: box-shadow 0.2s;
}

.material-type-list.card-body {
    border: 1px solid #ddd;
    border-radius: 6px;
    margin: 0.75rem 1.5rem;
    padding: 0.75rem;
    background-color: #EEF5F9;
    transition: box-shadow 0.2s;
}

.cursor-pointer {
    cursor: pointer;
}

.material-type-list {
    display: none;
    transition: all 0.3s ease;
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.material-header.open .toggle-icon {
    transform: rotate(180deg);
}

.type-card {
    margin:1.0rem 0.75rem;
}