    :root {
            --primary-color: #0071e3;
            --dark-bg: #0a0a0a;
            --darker-bg: #000000;
            --card-bg: #1a1a1a;
            --text-color: #ffffff;
            --light-text: #999999;
            --border-color: #333333;
            --border-radius: 14px;
            --spacing: 20px;
            --accent-color: #6e56cf;
        }
        
        * {
            max-width: 100%;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        }
        
        body {
            background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-tap-highlight-color: transparent; /* Untuk Safari dan Chrome */
    user-select: none; /* Standar */
    -webkit-user-select: none; /* Safari dan Chrome */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* Internet Explorer/Edge */
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing);
        }
        
        header {
            background-color: rgba(90, 87, 87, 0.233); /* Warna putih transparan */
            backdrop-filter: blur(10px); /* Efek blur */
            -webkit-backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 10px rgba(0, 0, 0, 0.1);
            transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
        }
        
        .scrolled {
            background-color: rgba(255, 255, 255, 0.664); /* Lebih putih saat discroll */
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 50px;
            padding: 10px 0; /* Hapus padding kiri & kanan */
        }
        
        @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@600&display=swap');
        
        .logo {
            display: flex;
            align-items: center;
            font-family: 'Poppins', sans-serif;
            font-size: 22px;
            font-weight: bold;
            letter-spacing: 1px;
            margin-left: 0px; /* Geser lebih kiri */
        }
        
        .logo span {
            color: white;
        }
        
        .logo span.tech {
            color: #00a6fb;
            transition: 0.3s ease-in-out;
        }
        
        
        @media (min-width: 1024px) { /* Untuk layar desktop */
            .logo {
                margin-left: -70px; /* Geser lebih ke kiri untuk layar lebih besar */
            }
        }
        
        
        .hero {
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at center, rgba(110, 86, 207, 0.2) 0%, rgba(10, 10, 10, 0) 70%);
            z-index: -1;
        }
        
        .hero-content {
            position: relative;
            z-index: 1;
        }
        
        .hero-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 0;
        }
        
        .particle {
            position: absolute;
            background-color: var(--accent-color);
            border-radius: 50%;
            opacity: 0.3;
        }
        
  h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(90deg, #ffffff, #6e56cf, #ffffff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
    background-size: 300% 100%;
    animation: gradientMove 3s infinite alternate linear;
}

@keyframes gradientMove {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 100% 50%;
    }
}


        
        h2 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 40px;
        }
        
        .hero-subtitle {
            font-size: 24px;
            color: var(--light-text);
            max-width: 700px;
            margin: 0 auto 40px;
        }
        
        /* Responsiveness */
        @media (max-width: 768px) { /* Tablet & Mobile */
            h1 {
                font-size: 40px; /* Lebih kecil agar pas di layar hp */
            }
        
            h2 {
                font-size: 28px;
            }
        
            .hero-subtitle {
                font-size: 20px;
                max-width: 90%; /* Supaya tidak terlalu melebar */
            }
        }
        
        @media (max-width: 480px) { /* Mobile kecil */
            h1 {
                font-size: 32px;
            }
        
            h2 {
                font-size: 22px;
            }
        
            .hero-subtitle {
                font-size: 18px;
            }
        }
        
        
        .products {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 80px
        }
 .product-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--border-color);
    opacity: 0.7; /* Efek awal */
    transform: scale(0.98);
}

/* Efek hover tetap seperti sebelumnya */
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--accent-color);
}

/* Efek saat produk muncul di viewport */
.product-card.active {
    opacity: 1;
    transform: scale(1);
    border: 2px solid var(--accent-color); /* Tambahkan border saat muncul */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5); /* Sedikit perbesar efek bayangan */
}
        
        .product-content {
            padding: 30px;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .product-title {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        
        .product-price {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-color);
            display: flex;
            align-items: baseline; /* Agar durasi tetap sejajar */
            gap: 5px; /* Beri jarak sedikit antara harga dan durasi */
        }
        
        .product-duration {
            font-size: 18px; /* Ukuran lebih kecil */
            color: gray; /* Warna abu-abu */
            font-weight: 500;
        }
        
        
        .product-details {
            color: var(--light-text);
            margin-bottom: 24px;
        }
        
        .select-plan {
            background: var(--accent-color);
            margin-top: auto;
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 22px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            width: 100%;
        }
        .select-plan:hover {  
        background-color: #5643b0;  
        transform: scale(1.02);  
    }

        
        /* Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .modal {
            background: var(--darker-bg);
            border-radius: var(--border-radius);
            max-width: 500px;
            width: 90%;
            padding: 40px;
            position: relative;
            transform: translateY(20px);
            transition: transform 0.3s ease;
            border: 1px solid var(--border-color);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }
        
        .modal-overlay.active .modal {
            transform: translateY(0);
        }
        
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 24px;
            color: var(--light-text);
            cursor: pointer;
            transition: color 0.2s ease;
            background: none;
            border: none;
        }
        
        .modal-close:hover {
            color: var(--text-color);
        }
        
        .modal-title {
            font-size: 24px;
            margin-bottom: 20px;
            text-align: center;
        }
        
        .modal-content {
            margin-bottom: 30px;
        }
        
        /* Forms */
        .form-group {
            margin-bottom: 24px;
        }
        
        label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 8px;
            color: var(--light-text);
        }
        
        input, select {
            width: 100%;
            padding: 14px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border 0.2s ease;
            background-color: var(--card-bg);
            color: var(--text-color);
        }
        
        input:focus, select:focus {
            border-color: var(--accent-color);
        }
        
        /* QRIS Payment */
        .qris-container {
            text-align: center;
            margin-top: 30px;
        }
        
        .qris-code {
            margin: 0 auto 20px;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 10px;
            width: 200px;
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .qris-info {
            font-size: 14px;
            color: var(--light-text);
            margin-bottom: 20px;
        }
        
        .qris-timer {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        
        /* Success message */
        .success-message {
            display: none;
            text-align: center;
            padding: 40px;
        }

        .success-icon {
            font-size: 60px;
            color: #00c853;
            margin-bottom: 20px;
        }

      /* Features section */
.features {
    padding: 90px 0;
    background-color: var(--darker-bg);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    max-width: 1200px; /* Atur sesuai kebutuhan */
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(110, 86, 207, 0.1) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 0;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); /* Grid lebih fleksibel */
    gap: 20px; /* Lebih besar */
    margin-top: 20px; /* Jarak atas lebih besar */
    position: relative;
    z-index: 1;
    padding: 0 30px; /* Padding lebih besar */
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px); /* Lebih jauh */
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-item {
    text-align: center;
    padding: 10px; 
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    transition: transform 0.3s ease, border-color 0.3s ease, opacity 0.3s ease;
    
    /* Efek awal */
    opacity: 0;
    transform: translateY(30px) scale(1);
}

/* Efek fadeInUp hanya aktif jika elemen punya kelas .visible */
.feature-item.visible {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* Efek saat elemen aktif secara otomatis */
.feature-item.active {
    border-color: var(--accent-color);
    transform: scale(1.1); /* Lebih besar saat aktif */
    opacity: 1;
}

/* Feature item styling */
.feature-icon {
    font-size: 48px; /* Lebih besar */
    margin-bottom: 20px;
    color: var(--accent-color);
}

.feature-title {
    font-size: 22px; /* Lebih besar */
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-description {
    font-size: 16px; /* Lebih besar */
    color: var(--light-text);
}

/* Tablet: 2 kolom */
@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* Desktop: 2 atas 2 bawah */
@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 50px;
        max-width: 800px;
        margin: 60px auto;
    }
}

        
        .section-title {
            font-size: 36px;
            text-align: center;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        
        .section-subtitle {
            text-align: center;
            color: var(--light-text);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        /* Plan summary in modal */
        .plan-summary {
            background-color: var(--card-bg);
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 20px;
            border: 1px solid var(--border-color);
        }
        
        .plan-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }
        
        .plan-name {
            font-size: 18px;
            font-weight: 600;
        }
        
        .plan-price {
            font-size: 18px;
            color: var(--accent-color);
            font-weight: 600;
        }
        
        .plan-features {
            color: var(--light-text);
            font-size: 14px;
        }
        
        /* Animations */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .animate {
            animation: fadeInUp 0.6s ease-out forwards;
        }
        
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
            100% { transform: translateY(0px); }
        }
        
        .float {
            animation: float 6s ease-in-out infinite;
        }
        
        footer {
            background-color: var(--darker-bg);
            padding: 60px 0;
            text-align: center;
            margin-top: 80px;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-bottom: 20px;
        }
        
        .footer-link {
            color: var(--light-text);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        
        .footer-link:hover {
            color: var(--text-color);
        }
        
        .copyright {
            color: #6e6e73;
            font-size: 14px;
        }
        
        /* Device mockup */
        .device-mockup {
            position: relative;
            max-width: 300px;
            margin: 60px auto;
        }
        
        .device-frame {
            width: 100%;
            border-radius: 30px;
            border: 2px solid #444;
            overflow: hidden;
            position: relative;
            aspect-ratio: 9/19;
            background-color: var(--card-bg);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        
        .device-content {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            padding: 15px;
            display: flex;
            flex-direction: column;
        }
        
        .device-header {
            display: flex;
            justify-content: space-between;
            padding: 5px 0;
            border-bottom: 1px solid #444;
            margin-bottom: 10px;
        }
        
        .device-time {
            font-size: 12px;
            font-weight: 500;
        }
        
        .device-battery {
            font-size: 12px;
        }
        
        .chat-container {
            flex: 1;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding-bottom: 10px;
        }
        
        .chat-message {
            word-wrap: break-word;
            white-space: normal;
            text-align: left; /* Pastikan teks selalu rata kiri */
            padding: 8px 12px;
            border-radius: 16px;
            max-width: 80%;
            font-size: 12px;
            animation: fadeInUp 0.5s forwards;
            animation-delay: calc(var(--i) * 0.3s);
            opacity: 0;
        }
        
        .chat-user {
            align-self: flex-end;
            background-color: var(--accent-color);
            color: white;
        }
        
        .chat-bot {
            align-self: flex-start;
            background-color: #333;
            color: white;
        }
        
        .chat-input {
            display: flex;
            background-color: #333;
            border-radius: 20px;
            padding: 8px 12px;
            gap: 8px;
            align-items: center;
        }
        
        .chat-input-field {
            flex: 1;
            text-align: left;
            font-size: 12px;
            color: #999;
        }
        
        .chat-send {
            width: 20px;
            height: 20px;
            background-color: var(--accent-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            color: white;
        }
        /* Popup */
        .popup-container {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }

        body.popup-open {
            overflow: hidden;
            position: fixed;
            width: 100%;
        }

        .popup-container {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }

        .popup-content {
            background: white;
            color: black;
            width: 90%;
            max-width: 500px;
            padding: 20px;
            border-radius: 10px;
            text-align: left;
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .popup-header {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .popup-body {
            display: flex;
            flex-direction: column;
        }

        .popup-content img {
            width: 100%;
            border-radius: 10px;
        }

        .popup-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .popup-content .bayar, .popup-content .unduh {
            background: #32CD32;
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 22px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            width: 100%;
        }

        .popup-content .unduh {
            background: #00a6fb;
        }

        .close-btn {
            position: absolute;
            top: 10px;
            right: 15px;
            font-size: 20px;
            cursor: pointer;
            color: black;
        }

        @media (min-width: 768px) {
            .popup-content {
                flex-direction: row;
                max-width: 600px;
            }
            .popup-body {
                flex: 1;
            }
            .popup-content img {
                width: 40%;
            }
        }
