body {
    background-color: #f4f5f7;
}
.navbar-brand {
    letter-spacing: 0.5px;
}
.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border-radius: 10px;
}
.kpi-card {
    border-left: 4px solid #b8860b;
}
.kpi-card .kpi-valor {
    font-size: 1.6rem;
    font-weight: 700;
}
.table thead th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #6c757d;
    border-bottom-width: 1px;
}
.badge-grupo-fixa { background-color: #6c757d; }
.badge-grupo-variavel { background-color: #b8860b; }
.badge-grupo-comercial { background-color: #0d6efd; }
.badge-grupo-imposto { background-color: #dc3545; }
.badge-grupo-mao_obra { background-color: #6610f2; }
.badge-grupo-manutencao { background-color: #198754; }
.badge-grupo-outras { background-color: #495057; }

@media (max-width: 576px) {
    .kpi-card .kpi-valor { font-size: 1.3rem; }
}