.trend-card { background: white; border: 1px solid #dee2e6; border-radius: .5rem; padding: 1rem; }
.trend-chart { display: block; width: 80%; min-height: 208px; }
.trend-axis { stroke: #adb5bd; stroke-width: 1; }
.trend-grid { stroke: #e2e6ea; stroke-width: 1; }
.trend-line { fill: none; stroke: #0d6efd; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.trend-label { font-size: 16px; fill: #6c757d; }
.trend-tick-label { font-size: 13px; }
.trend-range-label { font-size: 14px; }