:root {
  --bg: #1b1d22;
  --fg: #eee;
  --muted: #9aa;
  --card: #2a2d34;
  --line: #111;
  --accent: #c9a227;
  --on: #8c8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Segoe UI, Tahoma, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
a { color: #ddd; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px 20px;
  flex-wrap: wrap;
  padding: 10px 18px;
  background: #12141a;
  border-bottom: 1px solid #000;
}
.brand { font-weight: 700; text-decoration: none; letter-spacing: 0.04em; }
.top-right { display: flex; gap: 12px; align-items: center; margin-left: auto; }
.who { color: var(--muted); font-size: 14px; }
.live {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--muted);
  font-size: 13px;
}
.live-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #555;
}
.live-green .live-dot { background: #2ecc40; box-shadow: 0 0 8px #2ecc40; }
.live-yellow .live-dot { background: #ffdc00; box-shadow: 0 0 8px #ffdc00; }
.live-orange .live-dot { background: #ff851b; box-shadow: 0 0 8px #ff851b; }
.live-red .live-dot { background: #ff4136; box-shadow: 0 0 8px #ff4136; }
.live-copy {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  align-items: baseline;
}
.live-label { font-weight: 700; color: #ddd; }
.live-ago { color: #ccc; }
.live-at { font-variant-numeric: tabular-nums; }
button, .filters button {
  background: #3a3e48;
  color: #fff;
  border: 1px solid #111;
  height: 32px;
  padding: 0 12px;
  cursor: pointer;
  font-weight: 600;
}
.wrap { padding: 16px 20px 40px; max-width: 1200px; margin: 0 auto; }
h1 { font-size: 22px; margin: 8px 0 16px; }
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}
.filters label, .login-card label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--muted);
}
input, select {
  height: 32px;
  border: 1px solid #111;
  background: #f4f4f4;
  color: #111;
  padding: 0 8px;
  min-width: 140px;
}
.grid {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
}
.grid th, .grid td {
  border-bottom: 1px solid #111;
  padding: 8px 10px;
  text-align: left;
  font-size: 14px;
}
.grid th { color: var(--muted); font-weight: 600; }
.th-sort {
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
.th-sort:hover { color: #fff; }
.th-sort.is-on { color: var(--accent); }
.icon-btn {
  display: inline-flex;
  color: var(--accent);
}
.empty { color: var(--muted); }
.meta, .back { color: var(--muted); }
.chart-box {
  background: #fff;
  padding: 12px 12px 8px;
  margin: 16px 0 24px;
}
.chart-plot {
  height: 380px;
  position: relative;
}
.chart-plot canvas {
  display: block;
}
.valve-box {
  background: transparent;
  padding: 10px 0 4px;
  margin: 0;
  border-top: 1px solid #ddd;
}
.valve-head {
  font-size: 13px;
  color: #666;
  font-weight: 600;
  margin: 0 0 8px;
}
.valve-row {
  position: relative;
  height: 22px;
  margin: 0 0 4px;
}
.valve-lab {
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 12px;
  color: #555;
  text-align: right;
  overflow: hidden;
  white-space: nowrap;
}
.valve-track {
  position: relative;
  height: 14px;
  margin-top: 4px;
  background: #9a9a9a;
  border: 1px solid #777;
  overflow: hidden;
}
.valve-seg {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: 0;
}
.valve-seg.ca { background: #9a9a9a; }
.valve-seg.cm { background: #d62728; }
.valve-seg.oa { background: #2ca02c; }
.valve-seg.om { background: #e6c200; }
.valve-hint {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin: 8px 0 0;
  font-size: 12px;
  color: #666;
  align-items: center;
}
.vh {
  display: inline-block;
  width: 14px;
  height: 10px;
  border: 1px solid #777;
  vertical-align: middle;
  margin-right: 4px;
}
.vh-ca { background: #9a9a9a; }
.vh-cm { background: #d62728; border-color: #d62728; }
.vh-oa { background: #2ca02c; border-color: #2ca02c; }
.vh-om { background: #e6c200; border-color: #c9a800; }
.tight td, .tight th { font-size: 13px; }
td.on { color: var(--on); font-weight: 700; }
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 320px;
  background: var(--card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 { margin: 0 0 8px; }
.err { color: #f88; margin: 0; }
.login-card input { min-width: 0; width: 100%; }