:root {
  --brand: #b5541a;
  --brand-dark: #8a3f13;
  --sidebar-width: 220px;
}

body {
  background-color: #f5f7fa;
  min-height: 100vh;
}

.navbar-brand {
  font-weight: 600;
}

.app-navbar {
  background-color: var(--brand-dark);
}

.app-content {
  padding: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-weight: 600;
  color: #2b3648;
}

.empty-state {
  text-align: center;
  color: #94a0b3;
  padding: 1.25rem;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
}

.auth-card {
  width: 100%;
  max-width: 420px;
}

.stat-card {
  background: #fff;
  border-radius: 0.5rem;
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  border-left: 4px solid transparent;
}

.stat-card.stat-overdue { border-left-color: #dc3545; }
.stat-card.stat-today { border-left-color: #fd7e14; }
.stat-card.stat-upcoming { border-left-color: #0d6efd; }
.stat-card.stat-paid { border-left-color: #198754; }
.stat-card.stat-missing { border-left-color: #6f42c1; }

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-dark);
}

.stat-label {
  color: #6b7688;
  font-size: 0.85rem;
}

.row-overdue { background-color: #fdecea; }
.row-today { background-color: #fff3e0; }