:root {
  --bg0: #0b0f12;
  --bg1: #12181e;
  --bg2: #1a222b;
  --line: #2a3540;
  --text: #e8eef3;
  --muted: #8b9aab;
  --accent: #3ecf8e;
  --amber: #e6b35a;
  --cyan: #5ec8d6;
  --danger: #e26d6d;
  --tile: #151c23;
  --font-display: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "Cascadia Mono", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a2a24 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #1a2430 0%, transparent 50%),
    var(--bg0);
  color: var(--text);
  font-family: var(--font-display);
}

body {
  padding: 1.25rem clamp(1rem, 3vw, 2rem) 2rem;
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
}

.brand {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
  margin: 0;
}

.brand span {
  color: var(--accent);
}

.sub {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--line);
  background: var(--bg1);
}

.dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--danger);
}

.dot.live {
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(62, 207, 142, 0.55);
  animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 8px rgba(62, 207, 142, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(62, 207, 142, 0);
  }
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.tile {
  background: linear-gradient(180deg, var(--bg2), var(--tile));
  border: 1px solid var(--line);
  padding: 0.85rem 0.95rem;
  min-height: 5.2rem;
}

.tile .label {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tile .value {
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-variant-numeric: tabular-nums;
  transition: color 180ms ease;
}

.tile .value.flash {
  color: var(--accent);
}

.tile .unit {
  color: var(--muted);
  font-size: 0.85rem;
  margin-left: 0.2rem;
}

.kwh {
  border-color: rgba(62, 207, 142, 0.45);
}

.kwh .value {
  color: var(--accent);
}

.charts {
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--bg1);
  border: 1px solid var(--line);
  padding: 0.9rem 1rem 0.5rem;
}

.panel h2 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-transform: uppercase;
}

.panel .hint {
  margin: 0 0 0.6rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.chart-wrap {
  position: relative;
  height: 220px;
}

.foot {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

@media (max-width: 640px) {
  .status {
    align-items: flex-start;
  }

  .chart-wrap {
    height: 190px;
  }
}