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feat(frontend): add Portfolio Chart Widget component and unit tests #859

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feat(frontend): add Portfolio Chart Widget component and unit tests #859

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138 changes: 138 additions & 0 deletions frontend/src/components/PortfolioChart/PortfolioChart.css
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Original file line number Diff line number Diff line change
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.portfolio-chart {
position: relative;
padding: 20px;
background: #ffffff;
border-radius: 8px;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

.portfolio-chart.mobile-view {
padding: 10px;
}

.chart-title {
margin: 0 0 20px 0;
font-size: 1.25rem;
font-weight: 600;
color: #333;
}

.range-picker {
display: flex;
gap: 10px;
margin-bottom: 20px;
justify-content: flex-end;
}

.range-picker button {
padding: 5px 12px;
background: #f5f5f5;
border: 1px solid #ddd;
border-radius: 4px;
cursor: pointer;
transition: all 0.2s;
}

.range-picker button.active {
background: #4CAF50;
color: white;
border-color: #4CAF50;
}

.chart-container {
position: relative;
margin-bottom: 20px;
}

.chart-container svg {
display: block;
margin: 0 auto;
}

.chart-legend {
display: flex;
justify-content: center;
gap: 20px;
margin-top: 20px;
}

.legend-item {
display: flex;
align-items: center;
gap: 8px;
}

.legend-color {
width: 12px;
height: 12px;
background: #4CAF50;
border-radius: 2px;
}

.chart-tooltip {
position: absolute;
background: rgba(0, 0, 0, 0.8);
color: white;
padding: 8px 12px;
border-radius: 4px;
font-size: 12px;
pointer-events: none;
z-index: 1000;
white-space: nowrap;
}

.loading-spinner {
width: 40px;
height: 40px;
margin: 0 auto 10px;
border: 3px solid #f3f3f3;
border-top: 3px solid #4CAF50;
border-radius: 50%;
animation: spin 1s linear infinite;
}

@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}

.portfolio-chart.loading,
.portfolio-chart.error,
.portfolio-chart.empty {
text-align: center;
padding: 60px 20px;
color: #666;
}

.portfolio-chart.error {
color: #f44336;
}

.sr-only {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
border: 0;
}

/* Mobile responsive */
@media (max-width: 768px) {
.portfolio-chart {
padding: 10px;
}

.range-picker button {
padding: 4px 8px;
font-size: 12px;
}

.chart-tooltip {
font-size: 10px;
padding: 4px 8px;
}
}
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