:root {
  --bg: #0f1115;
  --panel: #1a1d24;
  --panel-2: #242833;
  --border: #2f3441;
  --text: #e6e8ee;
  --muted: #9aa2b2;
  --accent: #4da3ff;
  --up: #4ade80;
  --down: #f87171;
  --add: #4ade80;
  --remove: #f87171;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC",
    "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  background: var(--panel);
}
header h1 { margin: 0; font-size: 18px; }
header .sub { color: var(--muted); font-size: 12px; }
header nav a { margin-left: 16px; }
header nav a.active { font-weight: 600; border-bottom: 2px solid var(--accent); padding-bottom: 2px; }

main { max-width: 1200px; margin: 0 auto; padding: 20px 24px; }

.controls {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.controls label { color: var(--muted); font-size: 13px; }
select, input[type="text"] {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 13px;
  min-width: 140px;
}
select:focus, input:focus { outline: 1px solid var(--accent); border-color: var(--accent); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
}
.card .label { color: var(--muted); font-size: 12px; }
.card .value { font-size: 22px; font-weight: 600; margin-top: 4px; }
.card .delta { font-size: 12px; margin-top: 2px; }
.delta.up { color: var(--up); }
.delta.down { color: var(--down); }
.delta.flat { color: var(--muted); }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
}
.panel h2 { margin: 0 0 12px; font-size: 15px; display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.panel h2 .count { color: var(--muted); font-weight: 400; font-size: 12px; }
.panel h2 .controls-inline { display: flex; gap: 8px; align-items: center; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
th { color: var(--muted); font-weight: 500; position: sticky; top: 0; background: var(--panel); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--panel-2); }
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.pill.add { background: rgba(74, 222, 128, 0.15); color: var(--add); }
.pill.remove { background: rgba(248, 113, 113, 0.15); color: var(--remove); }
.up { color: var(--up); }
.down { color: var(--down); }
.muted { color: var(--muted); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 720px) {
  .two-col { grid-template-columns: 1fr; }
  main { padding: 12px; }
  header { padding: 14px 16px; }
}

.scroll-y {
  max-height: 420px;
  overflow-y: auto;
}

.chart-wrap {
  position: relative;
  height: 340px;
  margin-bottom: 16px;
}

.empty { padding: 24px; text-align: center; color: var(--muted); }