:root {
    --upvc-primary: #1e40af;
    --upvc-primary-2: #2563eb;
    --upvc-accent: #0ea5e9;
    --upvc-bg: #f3f7ff;
    --upvc-card: #ffffff;
    --upvc-text: #0f172a;
    --upvc-muted: #64748b;
}

body.upvc-body {
    background:
        radial-gradient(circle at 12% 20%, rgba(37, 99, 235, 0.08) 0, transparent 30%),
        radial-gradient(circle at 88% 12%, rgba(14, 165, 233, 0.08) 0, transparent 28%),
        var(--upvc-bg);
    color: var(--upvc-text);
}

.upvc-navbar {
    background: linear-gradient(110deg, var(--upvc-primary), var(--upvc-primary-2));
    box-shadow: 0 8px 22px rgba(30, 64, 175, 0.28);
}

.upvc-navbar .navbar-brand {
    letter-spacing: 0.3px;
}

.upvc-navbar .nav-link {
    color: rgba(255, 255, 255, 0.88) !important;
    border-radius: 10px;
    padding: 0.45rem 0.75rem !important;
}

.upvc-navbar .nav-link:hover,
.upvc-navbar .nav-link.active {
    background: rgba(255, 255, 255, 0.18);
    color: #fff !important;
}

.upvc-page-header {
    background: linear-gradient(130deg, rgba(30, 64, 175, 0.1), rgba(14, 165, 233, 0.08));
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: 14px;
    padding: 1rem 1.1rem;
}

.card {
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 14px;
}

.card.shadow-sm {
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08) !important;
}

.card-header {
    background: rgba(248, 250, 252, 0.85);
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    font-weight: 600;
}

.table thead th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.btn-primary {
    background: linear-gradient(120deg, var(--upvc-primary), var(--upvc-primary-2));
    border-color: transparent;
}

.btn-primary:hover,
.btn-primary:focus {
    background: linear-gradient(120deg, #1e3a8a, #1d4ed8);
    border-color: transparent;
}

.btn-outline-primary {
    border-color: #2563eb;
    color: #1d4ed8;
}

.form-control,
.form-select {
    border-radius: 10px;
    border-color: #cbd5e1;
}

.form-control:focus,
.form-select:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 0.22rem rgba(37, 99, 235, 0.12);
}

.upvc-module-card .icon-wrap {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(120deg, rgba(37, 99, 235, 0.12), rgba(14, 165, 233, 0.12));
    color: #1d4ed8;
    font-size: 1.1rem;
}

.upvc-module-card .card-title {
    margin-top: 0.8rem;
    margin-bottom: 0.4rem;
}

.upvc-auth-shell {
    min-height: 100vh;
    background:
        radial-gradient(circle at 15% 12%, rgba(37, 99, 235, 0.12), transparent 38%),
        radial-gradient(circle at 85% 80%, rgba(14, 165, 233, 0.12), transparent 36%),
        #eef4ff;
}