:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --page-plane: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11,11,11,0.10);
  --series-1: #2a78d6; /* blue */
  --series-2: #eb6834; /* orange */
  --series-3: #1baf7a; /* aqua */
  --series-4: #eda100; /* yellow */
  --series-5: #e87ba4; /* magenta */
  --context-bg: #f3efe4;
  --context-border: #e0d6b8;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --page-plane: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --gridline: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255,255,255,0.10);
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --series-5: #d55181;
    --context-bg: #26241c;
    --context-border: #453f2c;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --page-plane: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255,255,255,0.10);
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
  --series-5: #d55181;
  --context-bg: #26241c;
  --context-border: #453f2c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page-plane);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.app-header h1 { font-size: 1.6rem; margin: 0 0 4px; }
.subtitle { color: var(--text-secondary); margin: 0 0 20px; }

.filter-bar {
  display: flex;
  gap: 20px;
  align-items: flex-end;
  flex-wrap: wrap;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 20px;
}
.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group label { font-size: 0.8rem; color: var(--text-secondary); }
.filter-group select {
  font-size: 0.95rem;
  padding: 7px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-primary);
}

.stat-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.stat-tile .label { font-size: 0.82rem; color: var(--text-secondary); }
.stat-tile .value { font-size: 1.8rem; font-weight: 600; margin-top: 2px; }
.stat-tile .sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px 18px;
  margin-bottom: 20px;
}
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.card-head h2 { font-size: 1.05rem; margin: 0; }
.card-note { color: var(--text-secondary); font-size: 0.85rem; margin: 0 0 10px; }

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}
@media (max-width: 820px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.seg-control { display: flex; gap: 4px; background: var(--page-plane); border-radius: 8px; padding: 3px; }
.seg-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.seg-btn.active { background: var(--surface-1); color: var(--text-primary); box-shadow: 0 1px 2px var(--border); font-weight: 600; }

.chart-wrap { width: 100%; overflow-x: auto; }
.chart-wrap svg { display: block; }

.legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; font-size: 0.8rem; color: var(--text-secondary); }
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-swatch { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--text-primary);
  color: var(--surface-1);
  font-size: 0.78rem;
  padding: 6px 9px;
  border-radius: 6px;
  white-space: nowrap;
  transform: translate(-50%, -110%);
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 10;
}
.tooltip.show { opacity: 1; }

.table-wrap { overflow-x: auto; max-height: 320px; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--gridline); white-space: nowrap; }
th { color: var(--text-secondary); font-weight: 600; position: sticky; top: 0; background: var(--surface-1); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.seg-bar {
  display: flex;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  gap: 1px;
  background: var(--gridline);
}
.seg-bar > div { height: 100%; }
.seg-legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 8px;
}
.seg-legend span.dot { width: 8px; height: 8px; border-radius: 2px; display: inline-block; margin-right: 4px; }

.affil-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--gridline);
}
.affil-row:last-child { border-bottom: none; }
.affil-name { flex: 0 0 260px; font-size: 0.85rem; }
.affil-track { flex: 1; background: var(--page-plane); border-radius: 999px; height: 10px; overflow: hidden; }
.affil-fill { height: 100%; border-radius: 999px; background: var(--series-1); }
.affil-count { flex: 0 0 90px; text-align: right; font-variant-numeric: tabular-nums; font-size: 0.85rem; }

@media (max-width: 640px) {
  .affil-name { flex-basis: 140px; font-size: 0.78rem; }
  .affil-count { flex-basis: 60px; }
}

.context-section {
  background: var(--context-bg);
  border: 1px solid var(--context-border);
  border-radius: 12px;
  padding: 18px 20px 4px;
  margin-top: 8px;
}
.context-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--surface-1);
  border: 1px solid var(--context-border);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 8px;
}
.context-note { max-width: 780px; }

.app-footer { margin-top: 24px; color: var(--text-muted); font-size: 0.78rem; }

.axis-label { fill: var(--text-muted); font-size: 11px; }
.axis-line { stroke: var(--baseline); stroke-width: 1; }
.grid-line { stroke: var(--gridline); stroke-width: 1; }