:root {
  --bg: #0f1216;
  --card: #1a1f26;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #3b82f6;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Noto Sans", "Poppins", Arial, "Helvetica Neue", "PingFang SC", "Microsoft Yahei", sans-serif;
}

.top { display: flex; align-items: baseline; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid #222; }
.top h1 { margin: 0; font-size: 20px; }
.top .date { color: var(--muted); }

.container { max-width: 1100px; margin: 0 auto; padding: 24px; }
.cards { display: grid; grid-template-columns: 1fr; gap: 16px; }
.card { background: var(--card); border: 1px solid #222; padding: 16px; border-radius: 8px; }
.card .title-row { display: flex; align-items: baseline; justify-content: space-between; }
.card .refresh { color: var(--muted); font-size: 12px; }
.card .title { color: var(--muted); font-size: 14px; }
.card .value { font-size: 28px; margin-top: 8px; }

.panel { margin-top: 24px; background: var(--card); border: 1px solid #222; border-radius: 8px; padding: 16px; }
.panel-header { font-size: 16px; margin-bottom: 12px; }
.panel .panel-header-row { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.panel .refresh { color: var(--muted); font-size: 12px; }

canvas { max-width: 700px; }

.history-list { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.history-list .item { padding: 8px; border: 1px dashed #333; border-radius: 6px; }
.history-list .item .date { color: var(--muted); font-size: 12px; }
.history-list .item .vals { margin-top: 6px; font-size: 14px; }

.pager { display: flex; gap: 12px; align-items: center; margin-top: 12px; }
.pager button { background: #111a; color: var(--text); border: 1px solid #333; padding: 6px 10px; border-radius: 6px; cursor: pointer; }
.pager button:hover { border-color: var(--accent); }

.tooltip { position: fixed; background: #111; color: var(--text); border: 1px solid #333; padding: 8px 10px; border-radius: 6px; font-size: 12px; box-shadow: 0 6px 24px rgba(0,0,0,.4); }