body {
    background: #f4f6f9;
    font-family: 'Segoe UI', Arial, sans-serif;
}

/* ---- Login page ---- */
.login-page {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
}
.login-box {
    width: 100%;
    max-width: 380px;
}

/* ---- Sidebar ---- */
.sidebar {
    width: 230px;
    min-height: 100vh;
    background: #1e2a38;
    color: #fff;
    flex-shrink: 0;
}
.sidebar-brand {
    padding: 20px;
    font-size: 1.2rem;
    font-weight: bold;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar .nav-link {
    color: #c8d1db;
    padding: 12px 20px;
    border-radius: 0;
}
.sidebar .nav-link:hover {
    background: rgba(255,255,255,.08);
    color: #fff;
}
.sidebar .nav-link.active {
    background: #2a5298;
    color: #fff;
    font-weight: 600;
}

/* ---- Main content ---- */
.main-content {
    flex-grow: 1;
}
.topbar {
    background: #fff;
    padding: 14px 25px;
    border-bottom: 1px solid #e3e6ea;
}
.content-body {
    padding: 25px;
}

/* ---- Cards & tables ---- */
.card {
    border: none;
    border-radius: 10px;
}
.stat-card {
    border-radius: 10px;
    padding: 20px;
    color: #fff;
}
.stat-card h3 { margin: 0; font-size: 1.8rem; }
.stat-card p { margin: 0; opacity: .85; }

.badge-aktif { background: #28a745; }
.badge-isolir { background: #dc3545; }
.badge-nonaktif { background: #6c757d; }

table.table thead { background: #f1f3f5; }