:root {
  --app-bg: #f3f5f9;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --muted: #6b7280;
}

body.bg-app {
  background-color: var(--app-bg);
  color: var(--text-main);
}

.login-body {
  background: radial-gradient(circle at top right, #0d6efd 0%, #0b2248 50%, #020617 100%);
}

.area-nav {
  background: #ffffff;
  border-radius: 12px;
  padding: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.area-link {
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  color: #334155;
  font-weight: 600;
}

.area-link.active {
  background: #0d6efd;
  color: #ffffff;
}

.kpi-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
  height: 100%;
}

.kpi-title {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.kpi-value {
  font-size: 1.45rem;
  font-weight: 700;
}

.chart-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
  height: 100%;
}

.empty-state {
  background: #ffffff;
  border: 1px dashed #94a3b8;
  border-radius: 12px;
  padding: 28px;
  text-align: center;
}

canvas {
  max-height: 340px;
}