/* Source header styles */
.source-header {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 8px 12px;
    position: relative;
}

.arrow-icon {
    margin-left: auto;
    transition: transform 0.2s ease;
    display: flex;
    align-items: center;
}

.arrow-icon.expanded {
    transform: rotate(180deg);
}

.source-title {
    flex: 1;
    margin: 0 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}