:root {
  --metric-temperature: #dc3545;
  --metric-humidity: #0d6efd;
  --metric-battery: #198754;
  --metric-pressure: #6c757d;
  --metric-gas: #17a2b8;
}

.temperature { color: var(--metric-temperature); }
.humidity { color: var(--metric-humidity); }
.battery { color: var(--metric-battery); }
.pressure { color: var(--metric-pressure); }
.gas { color: var(--metric-gas); }

/* Dashboard */
.sensor-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.sensor-card-link:hover {
  color: inherit;
}

.sensor-card {
  transition: transform 0.2s, box-shadow 0.2s;
  height: 100%;
}

.sensor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.12);
}

.sensor-card-stale {
  border: 2px solid var(--bs-danger);
}

.sensor-card-low-battery {
  border: 2px solid var(--bs-warning);
}

.sensor-card-stale.sensor-card-low-battery {
  border: 2px solid var(--bs-danger);
}

.dashboard-summary .badge {
  font-size: 0.85rem;
}

.dashboard-refresh-status {
  font-size: 0.875rem;
}

/* Detail pages */
.metric-card {
  transition: transform 0.2s;
}

.metric-card:hover {
  transform: translateY(-2px);
}

.chart-container,
.battery-life-chart-container {
  position: relative;
  height: 300px;
}

.battery-life-chart-container {
  height: 280px;
}

.chart-empty-state {
  min-height: 200px;
}

.breadcrumb-bar {
  font-size: 0.9rem;
}

/* Records mobile cards */
.record-card {
  border-left: 4px solid var(--bs-primary);
}

.records-desktop {
  display: block;
}

.records-mobile {
  display: none;
}

@media (max-width: 768px) {
  .chart-container,
  .battery-life-chart-container {
    height: 250px;
  }

  .records-desktop {
    display: none;
  }

  .records-mobile {
    display: block;
  }

  .header-mobile {
    flex-direction: column;
    align-items: flex-start !important;
  }

  .header-mobile > div {
    width: 100%;
    margin-top: 0.5rem;
  }

  .header-mobile .btn {
    width: 100%;
  }

  h1.display-4,
  h1.display-5 {
    font-size: 1.5rem;
  }
}

@media (max-width: 576px) {
  .container-fluid {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .btn {
    min-height: 44px;
    touch-action: manipulation;
  }

  .metric-card i {
    font-size: 2rem !important;
  }

  .metric-card h2 {
    font-size: 1.5rem;
  }

  .battery-life-chart-container {
    height: 240px;
  }
}