.advanced-chart-widget {
    width: 100%;
    padding: 15px;
    box-sizing: border-box;
}

.chart-title {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
    font-weight: 600;
}

.advanced-chart-container {
    width: 100%;
    position: relative;
    min-height: 100px;
    background: #f9f9f9;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    margin-bottom: 15px;
    border: 1px dashed #d5dadf;
}

.advanced-chart-container:empty::after {
    content: "Chart will appear here with valid data";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #999;
    font-size: 14px;
    text-align: center;
    width: 80%;
}

.chart-error {
    background: #fff5f5;
    border: 1px solid #ffd6d6;
    color: #ff4d4d;
    padding: 10px 15px;
    border-radius: 3px;
    margin-top: 10px;
    font-size: 13px;
}