/* Context Window Budget Allocation Over a Long Session */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
    width: 100%; height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    background: #f8fafc;
    color: #1f2937;
    overflow: hidden;
}
main {
    display: flex; flex-direction: column; height: 100%;
    padding: 12px 16px; gap: 8px;
}
.header { display: flex; align-items: baseline; gap: 12px; }
.title { font-weight: 700; font-size: 16px; color: #37474f; }
.subtitle { font-size: 12px; color: #64748b; }

.chart-pane {
    flex: 1 1 auto;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 8px;
    min-height: 0;
    position: relative;
}
.chart-pane canvas { width: 100% !important; height: 100% !important; }

.readouts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}
.readout {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    padding: 6px 10px;
    font-size: 12px;
    color: #1f2937;
    font-family: ui-monospace, Menlo, monospace;
}
.readout-label { color: #64748b; }

.controls {
    display: grid;
    grid-template-columns: 1fr 1fr 0.8fr 0.8fr;
    gap: 14px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 10px 12px;
    align-items: center;
}
.control-block {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: #475569;
}
.control-block input[type=range] { width: 100%; }
.control-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #475569;
}