:root {
    --primary-color: #198754;
    --sidebar-width: 250px;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden; /* Mencegah scroll samping */
}

/* === SIDEBAR === */
.sidebar {
    height: 100vh;
    width: var(--sidebar-width);
    position: fixed;
    top: 0;
    left: 0;
    background-color: white;
    padding-top: 20px;
    z-index: 1000;
    transition: all 0.3s ease;
}

.sidebar .nav-link {
    color: #333;
    padding: 12px 20px;
    font-weight: 500;
    border-radius: 0 25px 25px 0;
    margin-right: 10px;
}

.sidebar .nav-link:hover, .sidebar .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

/* === MAIN CONTENT === */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 30px;
    transition: all 0.3s ease;
    min-height: 100vh;
}

/* === CARDS & STEPPER === */
.qr-type-card {
    border: 2px solid transparent;
    transition: 0.3s;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.qr-type-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(25, 135, 84, 0.2);
}

.qr-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.step-indicator {
    font-size: 1rem;
}

/* === MOBILE RESPONSIVE (Layar < 768px) === */
@media (max-width: 768px) {
    /* Sembunyikan Sidebar ke kiri layar */
    .sidebar {
        left: -250px; 
    }
    
    /* Jika sidebar aktif (diklik), munculkan lagi */
    .sidebar.active {
        left: 0;
        box-shadow: 5px 0 15px rgba(0,0,0,0.1);
    }

    /* Main content jadi penuh */
    .main-content {
        margin-left: 0;
        padding: 15px;
    }

    /* Penyesuaian Stepper di HP biar gak numpuk */
    .step-indicator {
        font-size: 0.8rem;
        flex-wrap: wrap; /* Biar turun ke bawah kalau sempit */
    }
    .step-indicator span {
        margin: 5px !important; /* Jarak diperkecil */
        display: inline-block;
    }

    /* Overlay Gelap saat sidebar muncul */
    .overlay {
        display: none;
        position: fixed;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
        top: 0;
        left: 0;
    }
    .overlay.active {
        display: block;
    }
}