:root {
  --teal: #2a7a82;
  --teal-dark: #1e5b61;
  --bg: #f4f6f6;
  --card-bg: #ffffff;
  --border: #d9e0e0;
  --text: #2c3333;
  --text-muted: #6b7677;
  --danger: #c0392b;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.topbar {
  background: var(--teal);
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  padding-top: max(12px, env(safe-area-inset-top));
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.topbar-title {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.topbar-title strong {
  font-size: 15px;
}

.topbar-title span {
  font-size: 11px;
  opacity: 0.85;
}

.badge-link {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(255,255,255,0.2);
  color: white;
  text-decoration: none;
  white-space: nowrap;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 40px;
}

.state-panel {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 15px;
}

.state-panel.error {
  color: var(--danger);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.toolbar button {
  background: var(--teal);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 12px;
  cursor: pointer;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.kpi-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 8px;
  text-align: center;
}

.kpi-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--teal);
}

.kpi-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.chart-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.chart-card h2 {
  font-size: 14px;
  margin: 0 0 12px 0;
  color: var(--text);
}

.chart-card canvas {
  max-height: 320px;
}

.chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.chart-row .half {
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .chart-row {
    grid-template-columns: 1fr;
  }
}