:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #dbe3ee;
  --up: #047857;
  --down: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #d8e9ff, var(--bg));
}

.container {
  max-width: 1400px;
  margin: 24px auto;
  padding: 16px;
}

h1 {
  margin: 0 0 12px;
}

.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  color: var(--muted);
  flex-wrap: wrap;
}

button {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

#sortControls {
  display: flex;
  gap: 8px;
}

.sort-btn.active {
  background: #dbeafe;
  border-color: #93c5fd;
  color: #1e3a8a;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 10px;
  overflow: hidden;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.chart-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}

.chart-card h3 {
  margin: 0 0 8px;
  font-size: 14px;
}

.chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

th, td {
  border-bottom: 1px solid var(--line);
  padding: 10px;
  text-align: left;
  font-size: 13px;
  white-space: nowrap;
}

.sub-metric {
  margin-top: 2px;
  font-size: 11px;
  color: var(--muted);
}

th {
  background: #eef4ff;
}

.up {
  color: var(--up);
  font-weight: 600;
}

.down {
  color: var(--down);
  font-weight: 600;
}

@media (max-width: 960px) {
  .container {
    margin: 8px;
    padding: 8px;
  }

  th, td {
    padding: 8px;
    font-size: 12px;
  }
}