.monthly-chart-tabs { display: flex; gap: 4px; margin: 0 0 10px; border-bottom: 1px solid #c4ccd7; }
.monthly-chart-tabs button { flex: 1 1 0; min-height: 44px; padding: 10px 4px; border: 1px solid transparent; border-radius: 4px 4px 0 0; background: transparent; color: #4a5870; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; }
.monthly-chart-tabs button[aria-selected="true"] { background: #1a2b4c; color: #fff; }
.monthly-chart-tabs button:focus-visible { outline: 2px solid #b98b3d; outline-offset: 2px; }
.monthly-chart-tabs button:disabled { cursor: wait; opacity: .7; }
.monthly-chart-panel[hidden] { display: none !important; }
.monthly-chart-panel { min-width: 0; }
.monthly-chart-panel .overlay-chart-image-preview { width: 100%; }
@media print { .monthly-chart-tabs { display: none !important; } }