body {
    background: #f4f7fb;
    font-family: 'Poppins', sans-serif;
    margin: 0;
}

.sidebar {
    width: 240px;
    background: #0f172a;
    min-height: 100vh;
    color: #cbd5f5;
}

.sidebar .brand {
    color: #fff;
    font-weight: 700;
    letter-spacing: .4px;
}

.sidebar a {
    color: #cbd5f5;
    text-decoration: none;
    display: block;
    padding: 10px 16px;
    border-radius: 10px;
    margin-bottom: 4px;
}

.sidebar a:hover,
.sidebar a.active {
    background: #1f2937;
    color: #fff;
}

.sidebar a.nav-disabled {
    opacity: 0.45;
    pointer-events: none;
}

.topbar {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
}

.content-pad {
    padding: 24px;
}

.card {
    border-radius: 16px;
    border: none;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.metric-card {
    background: #fff;
    border-radius: 16px;
    padding: 20px;
}

.code-box {
    font-weight: 700;
    letter-spacing: .2em;
    font-size: 20px;
    min-width: 180px;
}

.login-body {
    background: #0b1220;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    width: 100%;
    max-width: 860px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
}

.login-brand {
    background: linear-gradient(160deg, #1d4ed8, #0ea5e9);
    color: #fff;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-form {
    padding: 40px;
}

@media (max-width: 768px) {
    .login-card {
        grid-template-columns: 1fr;
        margin: 16px;
    }

    .sidebar {
        width: 200px;
    }
}