:host {
  --color-good: #2e7d32;
  --color-partial: #f9a825;
  --color-degraded: #ef6c00;
  --color-critical: #c62828;
  --color-bg-card: #ffffff;
  --color-border: #e5e7eb;
  --color-text-muted: #6b7280;
  --radius: 10px;

  display: block;
  font-family: 'Segoe UI', system-ui, sans-serif;
  color: #1f2937;
  padding: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.dashboard__header {
  margin-bottom: 2rem;

  h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
  }
}

.dashboard__subtitle {
  margin: 0.25rem 0 0;
  color: var(--color-text-muted);
}

h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.banner-error {
  margin: 0 0 1.5rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-critical);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: #fdecea;
  color: var(--color-critical);
}

.overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.card--gauge {
  align-items: center;
  text-align: center;
}

.card__label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.card__value {
  font-size: 1.6rem;
  font-weight: 700;
}

.progress-bar {
  height: 6px;
  background: #e5e7eb;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.25rem;
}

.progress-bar__fill {
  height: 100%;
  background: #3b82f6;
  border-radius: 999px;
  transition: width 0.3s ease;
}

.chart-section {
  margin-bottom: 2.5rem;
}

.alerts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.alert-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  background: #fef2f2;
  border: 1px solid #fecaca;
}

.alert-item__badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  color: #fff;
  background: var(--color-critical);
  flex-shrink: 0;
}

.alert-item--high .alert-item__badge { background: var(--color-degraded); }
.alert-item--medium .alert-item__badge { background: var(--color-partial); }
.alert-item--low .alert-item__badge { background: var(--color-good); }

.alert-item__message {
  font-size: 0.9rem;
}