:root {
            --primary: #005FFF;      /* primaryColor */
            --secondary: #00C2FF;   /* secondaryColor */
            --warning: #FFA800;     /* warningColor (accent olarak kullanıldı) */
            --bg: #F4F9FF;           /* backgroundColor */
            --surface: #FFFFFF;      /* surfaceColor (Kartlar) */
            --text-dark: #1E2A3A;    /* textColorDark */
            --success: #00C46A;      /* successColor */
            --error: #FF4C4C;        /* errorColor */
            --text-light: #556070;   /* Gövde metni için */
            --header-height: 85px;   /* HEADER YÜKSEKLİĞİ (SABİT) */
        }

        /* Global Reset */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            overflow-x: hidden; /* Animasyon taşmalarını engelle */
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--bg);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        
        /* * HEADER UI HATASI DÜZELTMESİ (v2'den):
         * Sabit header'ın arkasında kalmayı engeller.
         */
        section[id] {
            scroll-margin-top: var(--header-height);
        }

        /* --------------------------------- */
        /* Animasyonlar (Canlılık için)      */
        /* --------------------------------- */
        
        /* v3 YENİ: Hero açılış animasyonları */
        @keyframes slideInLeft {
            from { transform: translateX(-50px); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        @keyframes slideInRight {
            from { transform: translateX(50px); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-15px); }
            100% { transform: translateY(0px); }
        }
        
        /* v2'den: Sayfa kaydırma animasyonları */
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        .animate-on-scroll.slide-left { transform: translateX(-30px); }
        .animate-on-scroll.slide-right { transform: translateX(30px); }
        .animate-on-scroll.is-visible {
            opacity: 1;
            transform: translateY(0) translateX(0);
        }
        
        /* Buton "nefes alma" (pulse) animasyonu */
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(0, 95, 255, 0.5); }
            70% { box-shadow: 0 0 0 15px rgba(0, 95, 255, 0); }
            100% { box-shadow: 0 0 0 0 rgba(0, 95, 255, 0); }
        }

        /* --------------------------------- */
        /* Genel Bileşenler (Butonlar, Başlıklar) */
        /* --------------------------------- */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 20px;
            font-weight: 700;
        }

        h1 {
            font-size: 3.5rem; /* 56px */
            font-weight: 900;
            margin-bottom: 25px;
        }

        h2 {
            font-size: 2.5rem; /* 40px */
            text-align: center;
            margin-bottom: 40px;
        }

        h3 {
            font-size: 1.8rem; /* 28px */
            margin-bottom: 15px;
        }

        p {
            margin-bottom: 20px;
            font-size: 1.1rem; /* 18px */
        }
        
        .text-center {
            text-align: center;
        }

        /* Call-to-Action Butonları */
        .cta-button {
            display: inline-block;
            padding: 15px 35px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .cta-primary {
            background-color: var(--primary);
            color: var(--surface);
            box-shadow: 0 10px 20px rgba(0, 95, 255, 0.2);
            animation: pulse 2.5s infinite;
        }
        .cta-primary:hover {
            background-color: #004ecc;
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(0, 95, 255, 0.3);
            animation-play-state: paused;
        }
        
        /* Store Butonları */
        .store-buttons {
            display: flex;
            justify-content: center; /* v3: Sola hizalı */
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 30px;
        }
        .store-button {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 60px;
            min-width: 180px;
            padding: 0 20px;
            background-color: #000;
            color: white;
            border-radius: 10px;
            text-decoration: none;
            font-weight: 600;
            transition: transform 0.2s ease;
        }
        .store-button:hover {
             transform: scale(1.05);
        }
        .store-button .material-icons-outlined {
            font-size: 28px;
        }

        /* --------------------------------- */
        /* Header (Navigasyon)               */
        /* --------------------------------- */
        header {
            background-color: var(--bg);
            padding: 20px 0;
            position: fixed;
            width: 100%;
            height: var(--header-height);
            z-index: 1000;
            border-bottom: 1px solid #e0eaff;
            box-shadow: 0 2px 10px rgba(0, 95, 255, 0.05);
        }
        
        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            text-decoration: none;
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
        }
        .logo span {
            font-style: italic;
            font-weight: 400;
        }

        header nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
            align-items: center;
        }

        header nav ul li a {
            text-decoration: none;
            color: var(--text-light);
            font-weight: 600;
            font-size: 1.1rem;
            transition: color 0.3s ease;
        }
        header nav ul li a:hover {
            color: var(--primary);
        }
        
        header .cta-button {
            padding: 10px 25px;
            font-size: 1rem;
            animation: none;
        }
        
        .mobile-menu-toggle {
            display: none;
            cursor: pointer;
            background: none;
            border: none;
        }
        .mobile-menu-toggle .material-icons-outlined {
            font-size: 32px;
            color: var(--text-dark);
        }

        /* --------------------------------- */
        /* v3 YENİ: Hero (Ana Ekran) Bölümü  */
        /* --------------------------------- */
        #hero {
            padding-top: 100px;
            min-height: 100vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            /* Canlı arka plan gradyanı */
            background-image: radial-gradient(circle at 50% 50%, rgba(0, 95, 255, 0.08), var(--bg) 60%);
        }
        
        #hero-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }
        
        .hero-content {
            flex-basis: 50%;
            animation: slideInLeft 0.8s ease-out;
        }

        .hero-content .subtitle {
            font-size: 1.3rem; /* 20px */
            color: var(--text-light);
            margin-bottom: 30px;
        }
        
        .hero-content .trial-text {
            margin-top: 15px;
            color: var(--text-light);
            font-weight: 500;
        }
        
        /* Görsel Alanı */
        .hero-visual {
            flex-basis: 45%;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
            animation: slideInRight 0.8s ease-out;
        }
        
        .hero-mockup {
            width: 300px;
            height: 610px;
            background-color: #1E2A3A; /* Telefonun kasası */
            border: 10px solid #111;
            border-radius: 40px;
            box-shadow: 0 30px 60px rgba(0, 95, 255, 0.2);
            display: flex;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 1.2rem;
            font-weight: 600;
            padding: 10px;
            text-align: center;
            /* BURAYI KENDİ MOCKUP RESMİNİZLE DEĞİŞTİRİN */
            background-image: url('Simulator\ Screenshot\ -\ iPhone\ 17\ Pro\ Max\ -\ 2026-05-05\ at\ 21.35.06.png');
            background-size: cover;
        }
        
        /* Yüzen Kartlar */
        .floating-card {
            position: absolute;
            background: var(--surface);
            padding: 15px 20px;
            border-radius: 12px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            gap: 10px;
            animation: float 6s ease-in-out infinite;
        }
        
        .floating-card .material-icons-outlined {
            font-size: 24px;
        }
        .floating-card .text {
            font-weight: 600;
            color: var(--text-dark);
        }
        .floating-card .subtext {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .card-1 {
            top: 50px;
            left: -50px;
            animation-delay: 0s;
        }
        .card-1 .material-icons-outlined { color: var(--primary); }
        
        .card-2 {
            bottom: 80px;
            right: -60px;
            animation-delay: 1.5s;
        }
        .card-2 .material-icons-outlined { color: var(--success); }
        
        
        /* --------------------------------- */
        /* Problem Bölümü                    */
        /* --------------------------------- */
        #problem {
            background-color: var(--surface);
        }
        
        #problem p {
            font-size: 1.2rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* --------------------------------- */
        /* Özellikler (Features) Bölümü      */
        /* --------------------------------- */
        .feature-card {
            display: flex;
            gap: 50px;
            align-items: center;
            margin-bottom: 80px;
        }
        
        .feature-card:last-child {
            margin-bottom: 0;
        }
        
        .feature-card:nth-child(even) {
            flex-direction: row-reverse;
        }
        
        .feature-text, .feature-image {
            flex: 1;
        }
        
        .feature-image .mockup-placeholder {
            width: 100%;
            max-width: 500px;
            height: 450px;
            border-radius: 20px;
            box-shadow: 0 15px 30px rgba(0, 95, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #e0eaff;
            color: var(--primary);
            font-weight: 600;
            text-align: center;
        }
        .feature-image .mockup-placeholder .mockup-placeholder-img {
            width: 100%;
            max-width: 500px;
            height: 450px;
            border-radius: 20px;
            box-shadow: 0 15px 30px rgba(0, 95, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #e0eaff;
            color: var(--primary);
            font-weight: 600;
            text-align: center;
        }
        
        .feature-text ul {
            list-style: none;
            margin-top: 20px;
        }
        
        .feature-text ul li {
            font-size: 1.1rem;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        
        .feature-text ul li .material-icons-outlined {
            color: var(--success);
            font-size: 28px;
            margin-right: 15px;
        }

        /* --------------------------------- */
        /* Yorumlar (Testimonials) Bölümü    */
        /* --------------------------------- */
        #testimonials {
            background-color: var(--surface);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .testimonial-card {
            background-color: var(--bg);
            border: 1px solid #e0eaff;
            padding: 30px;
            border-radius: 20px;
        }
        
        .testimonial-card .stars {
            color: var(--warning);
            font-size: 24px;
            margin-bottom: 15px;
        }
        
        .testimonial-card .text {
            font-size: 1.1rem;
            font-style: italic;
            margin-bottom: 20px;
        }
        
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .testimonial-card .author .avatar-placeholder {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #e0eaff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }
        
        .testimonial-card .author .name {
            font-weight: 700;
            color: var(--text-dark);
        }
        
        .testimonial-card .author .title {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* --------------------------------- */
        /* Fiyatlandırma (Pricing) Bölümü    */
        /* --------------------------------- */
        .pricing-subtitle {
            font-size: 1.2rem;
            color: var(--text-light);
            text-align: center;
            margin-top: -30px;
            margin-bottom: 40px;
        }
        
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            align-items: stretch;
        }
        
        .pricing-card {
            background-color: var(--surface);
            border-radius: 20px;
            padding: 40px;
            border: 2px solid #e0eaff;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }
        
        .pricing-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 95, 255, 0.1);
        }
        
        .pricing-card.recommended {
            border-color: var(--primary);
            position: relative;
            transform: translateY(-15px);
        }
        
        .pricing-card .badge {
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: var(--surface);
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .pricing-card .plan-name {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        
        .pricing-card .plan-price {
            font-size: 3rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .pricing-card ul {
            list-style: none;
            margin-bottom: 30px;
            flex-grow: 1; /* Butonların altta kalmasını sağlar */
        }
        
        .pricing-card ul li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .pricing-card ul li .material-icons-outlined {
            color: var(--success);
            font-size: 24px;
        }
        .pricing-card ul li .material-icons-outlined.disabled {
            color: var(--error);
        }
        
        .pricing-card .cta-button {
            width: 100%;
            text-align: center;
            animation: none; /* Kartlardaki butonlar pulse yapmasın */
        }
        
        .pricing-card .cta-secondary {
            background-color: var(--bg);
            color: var(--primary);
            border: 2px solid #e0eaff;
        }
        .pricing-card .cta-secondary:hover {
            background-color: #e0eaff;
        }
        
        /* --------------------------------- */
        /* SSS (FAQ) Bölümü                  */
        /* --------------------------------- */
        #faq {
            background-color: var(--surface);
        }
        
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        details {
            background: var(--bg);
            border: 1px solid #e0eaff;
            border-radius: 12px;
            margin-bottom: 15px;
        }
        
        summary {
            padding: 20px 25px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none; /* Chrome'daki oku kaldırır */
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        summary::-webkit-details-marker {
            display: none; /* Chrome'daki oku kaldırır */
        }

        summary::after { /* Özel ok ikonu */
            content: '+';
            font-size: 2rem;
            font-weight: 400;
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        
        details[open] summary::after {
            content: '−';
        }
        
        details .answer {
            padding: 0 25px 25px 25px;
            line-height: 1.8;
            color: var(--text-light);
        }

        /* --------------------------------- */
        /* Son CTA ve Footer                 */
        /* --------------------------------- */
        #final-cta {
            background: linear-gradient(var(--primary));
            color: var(--surface);
            text-align: center;
        }
        
        #final-cta h2 {
            color: var(--surface);
        }
        
        #final-cta p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto 30px auto;
        }
        
        #final-cta .store-button {
            background-color: var(--surface);
            color: var(--text-dark);
        }
        #final-cta .store-button:hover {
            background-color: #eef;
        }
        
        footer {
            padding: 40px 0;
            text-align: center;
            color: var(--text-light);
        }
        
        footer .footer-links {
            margin-bottom: 20px;
        }
        
        footer .footer-links a {
            margin: 0 15px;
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
        }
        footer .footer-links a:hover {
            color: var(--primary);
        }
        .social-links span {
            margin: 0 15px;
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
        }
        .social-links a:hover {
            color: var(--primary);
        }

        /* --------------------------------- */
        /* Mobil Uyumluluk (Responsive)      */
        /* --------------------------------- */
        @media (max-width: 992px) {
            :root {
                --header-height: 70px; /* Mobilde header daha küçük */
            }
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2rem; }
            
            #hero {
                padding-top: 100px;
                min-height: auto;
                padding-bottom: 60px;
            }
            #hero-grid {
                flex-direction: column-reverse; /* Mobilde görsel üste gelsin */
                text-align: center;
            }
            .hero-content {
                animation: none; /* Mobilde açılış animasyonu olmasın (Observer halleder) */
            }
            .hero-visual {
                animation: none;
                margin-bottom: 30px;
                width: 100%;
                min-height: 620px;
                padding: 10px 0 20px;
            }
            .store-buttons {
                justify-content: center;
            }
            .card-1 { left: 10px; top: 18px; }
            .card-2 { right: 10px; bottom: 22px; }
            
            .testimonial-grid, .pricing-grid {
                grid-template-columns: 1fr;
            }
            
            .pricing-card.recommended {
                transform: translateY(0);
            }
            .pricing-grid {
                max-width: 450px;
                margin: 0 auto;
            }
        }
        
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            section { padding: 60px 0; }
            
            /* Mobil Navigasyon */
            .mobile-menu-toggle {
                display: block;
                z-index: 1002;
            }
            
            header nav {
                position: fixed;
                top: 0;
                left: 100%; /* Başlangıçta ekranın sağında */
                width: 100%;
                height: 100vh;
                background: var(--surface);
                transition: left 0.3s ease-in-out;
                z-index: 1001;
            }
            
            header nav.active {
                left: 0; /* Aktif olduğunda sola kay */
            }

            header nav ul {
                display: flex;
                flex-direction: column;
                height: 100%;
                align-items: center;
                justify-content: center;
                gap: 40px;
            }
            
            header nav ul li a {
                font-size: 1.5rem;
            }

            /* Diğer Bölümler */
            .feature-card, .feature-card:nth-child(even) {
                flex-direction: column;
                text-align: center;
            }
            
            .feature-card:nth-child(even) {
                 /* Resmin üste gelmesi için */
                flex-direction: column-reverse;
            }
            
            .feature-text ul {
                align-items: flex-start;
                text-align: left;
            }
            
            .hero-visual {
                min-height: 570px;
                padding: 8px 0 18px;
            }
            .hero-mockup {
                width: 235px;
                height: 478px;
            }
            .floating-card {
                padding: 9px 13px;
                gap: 7px;
                max-width: 178px;
            }
            .floating-card .material-icons-outlined { font-size: 20px; }
            .floating-card .text { font-size: 0.82rem; }
            .floating-card .subtext { font-size: 0.75rem; }
            .card-1 { left: 5px; top: 12px; }
            .card-2 { right: 5px; bottom: 15px; }
        }
        /* --------------------------------- */
/* ADDED: Smart QR Interface Layout   */
/* --------------------------------- */
.qr-wrapper {
    margin-top: 45px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.qr-box {
    background: var(--surface);
    padding: 15px;
    border-radius: 18px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    display: inline-block;
    transition: transform 0.3s ease;
}

.qr-box:hover {
    transform: scale(1.03);
}

#unified-qrcode img, #unified-qrcode canvas {
    display: block;
    border-radius: 8px;
}

.qr-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--surface);
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 10px 22px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.qr-download-btn:hover {
    background-color: var(--surface);
    color: var(--primary);
    border-color: var(--surface);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.qr-download-btn .material-icons-outlined {
    font-size: 20px;
}

.qr-caption {
    font-size: 0.9rem !important;
    color: rgba(255, 255, 255, 0.75) !important;
    margin-top: -5px;
    font-weight: 500;
}

/* Responsive adjustment optimization for tiny screen displays */
@media (max-width: 480px) {
    .qr-box {
        padding: 12px;
    }
    #unified-qrcode img, #unified-qrcode canvas {
        width: 140px !important;
        height: 140px !important;
    }
}

/* --------------------------------- */
/* ADDED: Pop-up Modal Interface UI  */
/* --------------------------------- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(30, 42, 58, 0.6); /* var(--text-dark) with opacity */
    backdrop-filter: blur(5px);
    z-index: 2000; /* Ensure it stays completely on top */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--surface);
    padding: 40px;
    border-radius: 24px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    position: relative;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    transform: scale(0.85);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.2s ease;
}

.modal-close-btn:hover {
    color: var(--error);
}

.modal-close-btn .material-icons-outlined {
    font-size: 28px;
}

.modal-content h3 {
    font-size: 1.6rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.modal-content p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 25px;
    line-height: 1.5;
}

.modal-qr-box {
    background: #F4F9FF; /* var(--bg) */
    padding: 20px;
    border-radius: 16px;
    display: inline-block;
    margin-bottom: 25px;
    border: 1px solid #e0eaff;
}

#modal-qrcode img, #modal-qrcode canvas {
    display: block;
    border-radius: 8px;
    margin: 0 auto;
}

.modal-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: white;
    color: var(--text-light);
    border: none;
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 8px 20px rgba(0, 95, 255, 0.2);
}

.modal-download-btn:hover {
    background-color: #004ecc;
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(0, 95, 255, 0.3);
}

.modal-download-btn .material-icons-outlined {
    font-size: 22px;
}