:root {
    --brand-100: #ebf4ff;
    --brand-500: #2364aa;
    --brand-700: #12457d;
}

body.app-bg {
    min-height: 100vh;
    background: radial-gradient(circle at 20% 0%, var(--brand-100), #f8fafc 45%, #eef3f9 100%);
}

.navbar-brand {
    color: var(--brand-700);
}

.btn-primary {
    background-color: var(--brand-500);
    border-color: var(--brand-500);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--brand-700);
    border-color: var(--brand-700);
}

.client-sidebar .nav-link {
    border-radius: 10px;
    color: #0f172a;
    background: #eef4fb;
    border: 1px solid #cbd9ea;
    font-weight: 500;
}

.client-sidebar .nav-link:hover {
    background: #dbeafe;
    border-color: #93c5fd;
    color: #0b4a8b;
}

.client-sidebar .nav-link.active {
    background: linear-gradient(120deg, #2364aa, #12457d);
    border-color: #12457d;
    color: #ffffff;
}

.kpi-card {
    background: linear-gradient(180deg, #ffffff, #f8fbff);
    border: 1px solid #dbeafe;
}

.kpi-label {
    font-size: 0.78rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: #64748b;
}

.kpi-value {
    font-size: 1.65rem;
    font-weight: 700;
    color: #12457d;
    line-height: 1.2;
}