:root {
  color-scheme: dark;
  --bg: #0c0c0c;
  --panel: #141414;
  --panel-2: #171717;
  --line: #262626;
  --muted: #a8a8a4;
  --subtle: #737370;
  --text: #f5f5f4;
  --accent: #f5f5f4;
  --accent-2: #a8a8a4;
  --good: #4ade80;
  --bad: #fb7185;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
}

a {
  color: inherit;
  text-decoration: none;
}

.section-head p,
.hero p,
.metric-grid small {
  color: var(--subtle);
}

button,
.key-pill {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  border-radius: 8px;
  padding: 8px 13px;
  cursor: pointer;
}

button:hover,
button.active {
  color: var(--text);
  border-color: #3a3a38;
}

main {
  padding: 34px 42px 56px;
  max-width: 1180px;
  margin: 0 auto;
}

.hero,
.controls,
.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

h1 {
  margin: 0;
  font-size: 36px;
  letter-spacing: 0;
}

h3 {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin: 0 0 6px;
}

.hero p {
  margin: 8px 0 0;
}

.hero span {
  color: var(--text);
}

.notice {
  margin-top: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 18px 20px;
}

.notice p {
  color: var(--muted);
  margin: 0;
}

.controls {
  margin: 26px 0 16px;
  align-items: stretch;
}

.controls-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.range-group {
  display: inline-flex;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}

.range {
  border: 0;
  background: transparent;
  border-radius: 6px;
  padding: 6px 10px;
}

.range.active {
  background: #262626;
  color: var(--text);
}

#status {
  color: var(--subtle);
}

.explain-card {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 16px;
}

.explain-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.explain-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.explain-grid span {
  border: 1px solid var(--line);
  background: var(--panel-2);
  border-radius: 8px;
  padding: 12px;
  color: var(--muted);
}

.explain-grid strong {
  color: var(--text);
  display: block;
  font-size: 20px;
  margin-bottom: 2px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.metric-grid article,
.chart-card,
.table-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
}

.metric-grid article {
  padding: 17px 18px;
}

.metric-grid span {
  display: block;
  color: var(--subtle);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.metric-grid strong {
  display: block;
  margin-top: 10px;
  font-size: 28px;
  letter-spacing: 0;
}

.chart-card,
.table-card {
  margin-top: 16px;
  padding: 18px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

th {
  color: var(--subtle);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-align: left;
  font-weight: 600;
  padding: 10px 8px;
}

td {
  border-top: 1px solid var(--line);
  padding: 12px 8px;
  color: var(--muted);
}

td:first-child {
  color: var(--text);
}

.ok {
  color: var(--good);
}

.error {
  color: var(--bad);
}

@media (max-width: 900px) {
  main {
    padding: 18px;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .explain-card {
    grid-template-columns: 1fr;
  }

  .controls {
    display: grid;
    grid-template-columns: 1fr;
  }

  .controls-left {
    justify-content: flex-start;
  }

  .table-card {
    overflow-x: auto;
  }
}