body {
    background-color: #f8f9fa;
}

.kpi-card {
    border-left-width: 5px;
}

.border-left-primary {
    border-left-color: #007bff;
}

.border-left-success {
    border-left-color: #28a745;
}

.border-left-danger {
    border-left-color: #dc3545;
}

.border-left-info {
    border-left-color: #17a2b8;
}

.kpi-value {
    font-size: 2.5rem;
    font-weight: bold;
}

.kpi-label {
    font-weight: 500;
    color: #6c757d;
}