:root {
  color-scheme: light;
  --ink: #18212f;
  --muted: #697386;
  --line: #d9e1ec;
  --panel: #ffffff;
  --bg: #f5f7fb;
  --accent: #188038;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.4 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(18px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.brand-block {
  min-width: 0;
}

.site-logo {
  display: block;
  width: min(280px, 58vw);
  height: auto;
  margin-bottom: 8px;
}

h1 {
  margin: 0;
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: 0;
}

.header-controls {
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  gap: 10px;
}

.room-picker,
.chart-toolbar label {
  display: grid;
  gap: 5px;
  min-width: 210px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.room-picker select,
.chart-toolbar select {
  width: 100%;
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%) calc(100% - 18px) 50% / 6px 6px no-repeat,
    linear-gradient(135deg, var(--muted) 50%, transparent 50%) calc(100% - 13px) 50% / 6px 6px no-repeat,
    #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  padding: 10px 36px 10px 12px;
}

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  white-space: nowrap;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fbbc04;
}

.dot.good {
  background: var(--accent);
}

.dot.bad {
  background: #d93025;
}

main {
  padding: 24px clamp(18px, 4vw, 44px) 44px;
}

.latest-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.latest-grid article,
.chart-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.latest-grid article {
  min-height: 86px;
  padding: 14px 16px;
}

.latest-grid span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.latest-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  letter-spacing: 0;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.chart-panel {
  min-height: 420px;
  padding: 16px;
}

.chart-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.chart-toolbar label {
  min-width: 180px;
}

.chart-panel canvas {
  width: 100% !important;
  height: 345px !important;
}

@media (max-width: 1100px) {
  .latest-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .chart-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-controls {
    align-items: stretch;
    width: 100%;
  }

  .room-picker {
    min-width: 0;
    width: 100%;
  }

  .chart-toolbar {
    justify-content: stretch;
  }

  .chart-toolbar label {
    min-width: 0;
    width: 100%;
  }

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

  .chart-panel {
    min-height: 360px;
  }

  .chart-panel canvas {
    height: 300px !important;
  }
}