:root {
            --primary-color: #1a365d;
            --secondary-color: #2b77e6;
            --accent-color: #00d4ff;
            --text-dark: #2d3748;
            --text-light: #718096;
            --bg-light: #f8fafc;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
        }

        .navbar {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        /* <picture> sarmalayicisi kendi kutusunu olusturmasin; <img> tam olarak
           eskisi gibi konumlanir (.gallery-item img gibi kurallar bozulmaz). */
        picture {
            display: contents;
        }

        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color) !important;
        }

        /* Menü öğeleri kelime ortasından bölünmesin ("Ana / Sayfa" gibi) */
        .navbar-nav .nav-link {
            white-space: nowrap;
        }

        /* 1200-1399px arası Bootstrap container'ı 1140px; marka + menü bu
           genişliğe tam sığmadığı için marka bu aralıkta küçültülüyor.
           1400px ve üzerinde (container 1320px) tasarım değişmez. */
        @media (min-width: 1200px) and (max-width: 1399.98px) {
            .navbar-brand {
                font-size: 1.35rem;
            }
            .navbar-brand img {
                height: 30px !important;
            }
        }

        /* Küçük ekranlarda marka adı 375px'e sığmıyordu (71px taşıyordu) */
        @media (max-width: 767.98px) {
            .navbar-brand {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 1.05rem;
            }
            .navbar-brand img {
                height: 28px !important;
            }
        }

        .nav-link {
            font-weight: 500;
            color: var(--text-dark) !important;
            transition: color 0.3s ease;
        }

        .nav-link:hover {
            color: var(--secondary-color) !important;
        }

        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.1)" points="0,0 1000,300 1000,1000 0,700"/></svg>');
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .btn-primary {
            background: var(--accent-color);
            border: none;
            padding: 15px 30px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            background: #00b8d4;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
        }

        .btn-outline-primary {
            border: 2px solid var(--accent-color);
            color: var(--accent-color);
            padding: 10px 25px;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }

        .btn-outline-primary:hover {
            background: var(--accent-color);
            color: white;
            transform: translateY(-2px);
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 1rem;
            text-align: center;
        }

        .section-subtitle {
            font-size: 1.2rem;
            color: var(--text-light);
            text-align: center;
            margin-bottom: 4rem;
        }

        .service-card {
            background: white;
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            height: 100%;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
        }

        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            font-size: 2rem;
            color: white;
        }

        .service-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .service-description {
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .tech-section {
            background: var(--bg-light);
            padding: 100px 0;
        }

        .tech-item {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .tech-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }

        .tech-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.5rem;
            color: white;
        }

        /* Integration Cards Styles */
        .integration-card {
            background: white;
            border-radius: 15px;
            padding: 2rem 1.5rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            text-align: center;
            height: 180px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .integration-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .integration-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            transition: all 0.3s ease;
        }

        .integration-card:hover .integration-icon {
            transform: scale(1.1);
        }

        .integration-card h5 {
            color: var(--primary-color);
            font-weight: 600;
            margin: 0;
            font-size: 1.1rem;
        }

        .stats-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 80px 0;
        }

        .stat-item {
            text-align: center;
            padding: 2rem;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 1.1rem;
            opacity: 0.9;
        }

        .footer {
            background: var(--primary-color);
            color: white;
            padding: 60px 0 30px;
        }

        .footer-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-link:hover {
            color: var(--accent-color);
        }

        .contact-info {
            margin-bottom: 1rem;
        }

        .contact-info i {
            margin-right: 0.5rem;
            color: var(--accent-color);
        }

        .modal-content {
            border-radius: 20px;
            border: none;
        }

        .modal-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border-radius: 20px 20px 0 0;
        }

        .modal-body {
            padding: 2rem;
        }

        .feature-list {
            list-style: none;
            padding: 0;
        }

        .feature-list li {
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list i {
            color: var(--accent-color);
            margin-right: 0.5rem;
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            
            .hero-subtitle {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .highlight-box {
            background: linear-gradient(135deg, rgba(43, 119, 230, 0.1), rgba(0, 212, 255, 0.1));
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 10px;
        }

        .extra-services {
            background: var(--bg-light);
            padding: 80px 0;
        }

        .extra-service-item {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .extra-service-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }

        .extra-service-item h4 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .video-container {
            position: relative;
            margin: 3rem 0;
        }

        .video-container video {
            transition: transform 0.3s ease;
        }

        .video-container video:hover {
            transform: scale(1.02);
        }

        .phone-mockup {
            position: relative;
            max-width: 300px;
            margin: 0 auto;
        }

        .phone-mockup img {
            width: 100%;
            height: auto;
            border-radius: 30px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        }

        .app-features {
            background: var(--bg-light);
            padding: 80px 0;
        }

        .app-feature-item {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .app-feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }

        .app-feature-item h4 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .app-feature-item i {
            color: var(--accent-color);
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        @media (max-width: 768px) {
            .video-container video {
                border-radius: 10px;
            }
        }

        /* Hero section için ek açıklama */
        .hero-description {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            opacity: 0.9;
            line-height: 1.8;
        }

        /* İçerik bölümü */
        .content-section {
            padding: 80px 0;
        }

        .content-card {
            background: white;
            border-radius: 20px;
            padding: 3rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 3rem;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .content-card h3 {
            color: var(--primary-color);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }

        .content-card p {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-dark);
            margin-bottom: 1.5rem;
        }

        /* Özellik listesi için özel stil */
        .features-list li strong {
            color: var(--primary-color);
        }

        /* Adım/süreç bölümü */
        .process-steps {
            background: var(--bg-light);
            padding: 80px 0;
        }

        .step-item {
            background: white;
            border-radius: 15px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
        }

        .step-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }

        .step-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            font-size: 2rem;
            color: white;
        }

        .step-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        /* Galeri bölümü */
        .image-gallery {
            background: white;
            padding: 80px 0;
        }

        .gallery-item {
            margin-bottom: 2rem;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .gallery-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
        }

        .gallery-item img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .gallery-caption {
            padding: 1.5rem;
            background: white;
        }

        .gallery-caption h5 {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .gallery-caption p {
            color: var(--text-light);
            margin: 0;
        }

        /* Avantajlar/faydalar bölümü */
        .benefits-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 80px 0;
        }

        .benefit-item {
            text-align: center;
            padding: 2rem;
            margin-bottom: 2rem;
        }

        .benefit-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            color: var(--accent-color);
        }

        .benefit-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        /* Mobil responsive ek stilleri */
        @media (max-width: 768px) {
            .content-card {
                padding: 2rem;
            }
        }

        /* Arşiv listesi için özel stiller */
        .archive-list {
            list-style: none;
            padding: 0;
            margin: 2rem 0;
        }

        .archive-list li {
            padding: 1rem;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 10px;
            margin-bottom: 1rem;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
        }

        .archive-list li i {
            font-size: 1.5rem;
            margin-right: 1rem;
            color: var(--accent-color);
        }

        .archive-list li strong {
            color: var(--primary-color);
        }