:root {
  --bg: #071018;
  --panel: rgba(17, 28, 42, 0.92);
  --panel2: rgba(24, 39, 57, 0.92);
  --text: #edf7ff;
  --muted: #8fa6bb;
  --line: rgba(156, 194, 226, 0.16);
  --good: #32d583;
  --warn: #fdb022;
  --bad: #ff5c72;
  --accent: #67e8f9;
  --accent2: #a78bfa;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(103, 232, 249, 0.15), transparent 28%),
    radial-gradient(circle at 82% 12%, rgba(167, 139, 250, 0.17), transparent 30%),
    linear-gradient(140deg, #05080d, var(--bg));
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.page { max-width: 1320px; margin: 0 auto; padding: 28px; }
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}
.eyebrow { margin: 0 0 8px; color: var(--accent); letter-spacing: 0.14em; text-transform: uppercase; font-size: 12px; }
h1 { margin: 0; font-size: clamp(28px, 4vw, 46px); line-height: 1.06; }
h2 { margin: 0 0 16px; font-size: 18px; }
.sub { color: var(--muted); margin: 10px 0 0; }
.card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(180deg, var(--panel), rgba(12, 20, 31, 0.92));
  box-shadow: 0 18px 50px rgba(0,0,0,.28);
  padding: 20px;
  backdrop-filter: blur(10px);
}
.toolbar { display: flex; align-items: center; gap: 18px; margin-bottom: 18px; color: var(--muted); }
button {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #031018;
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 800;
  cursor: pointer;
}
button:disabled { opacity: .55; cursor: wait; }
button.ghost {
  color: var(--text);
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
}
.grid { display: grid; gap: 18px; margin-bottom: 18px; }
.cards-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.metric .label { display:block; color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.metric strong { display:block; font-size: clamp(26px, 3vw, 38px); }
.metric small { color: var(--muted); }
.status-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 900;
  min-width: 118px;
  text-align: center;
  background: var(--panel2);
}
.status-pill.good { color: #031018; background: var(--good); }
.status-pill.warn { color: #211400; background: var(--warn); }
.status-pill.bad { color: #fff; background: var(--bad); }
.kv { margin: 0; }
.kv div { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.kv div:first-child { border-top: none; }
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.notes { margin: 0; padding-left: 20px; color: #d9e8f5; }
.notes li { margin: 10px 0; }
.chart-card { margin-bottom: 18px; }
.chart-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.chart-head p { margin: 6px 0 0; color: var(--muted); }
.chart-actions { display: flex; align-items: center; gap: 12px; color: var(--muted); }
#historyChart {
  display: block;
  width: 100%;
  height: 360px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(2, 8, 15, .42);
}
.legend { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 22px; height: 4px; display: inline-block; border-radius: 999px; }
.line-fee { background: #67e8f9; }
.line-target { background: #32d583; }
.line-gap { background: #fdb022; }
.log-card pre {
  margin: 0;
  max-height: 220px;
  overflow: auto;
  color: #b7c9d9;
  white-space: pre-wrap;
}
@media (max-width: 960px) {
  .cards-4, .cards-2 { grid-template-columns: 1fr; }
  .hero, .chart-head { align-items: flex-start; flex-direction: column; }
  .kv div { grid-template-columns: 1fr; }
  .page { padding: 16px; }
}