body {
    background: #f5f7fb;
    color: #1f2937;
}

.app-shell {
    min-height: 100vh;
}

.sidebar {
    min-height: 100vh;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.82);
    border-radius: 0.75rem;
    margin-bottom: 0.25rem;
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #ffffff;
}

.content-card {
    border: 0;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.metric-card {
    border: 0;
    border-radius: 1rem;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.table thead th {
    font-size: 0.875rem;
    color: #64748b;
}

.login-wrapper {
    min-height: 100vh;
    background: radial-gradient(circle at top left, #dbeafe 0, #f8fafc 40%, #e2e8f0 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    border: 0;
    border-radius: 1.25rem;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
}