/* CSS içeriği buraya gelecek */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary-black: #ffffff;
            --secondary-black: #f0f0f0;
            --accent-red: #0077cc;
            --light-gray: #333333;
            --dark-gray: #cccccc;
            --medium-gray: #777777;
            --gradient-bg: linear-gradient(135deg, #083daf 0%, rgba(255, 255, 255, 0.1) 50%, #000000 100%);
        }

        /* Dark theme variables */
        [data-theme="dark"] {
            --primary-black: #0a0a1a;
            --secondary-black: #1a1a1a;
            --accent-red: #0077cc;
            --light-gray: #e0e0e0;
            --dark-gray: #333333;
            --medium-gray: #999999;
            --gradient-bg: linear-gradient(135deg, #083daf 0%, rgba(0, 119, 204, 0.1) 50%, #000000 100%);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--primary-black);
            color: var(--light-gray);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        /* Prevent scroll when menu is open */
        body.menu-open {
            overflow: hidden;
        }

        /* Navigation */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(50, 38, 220, 0.2);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            transition: all 0.3s ease;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
            font-size: 2rem;
            font-weight: bold;
            background: linear-gradient(45deg, var(--accent-red), #ffffff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-links a {
            color: #ffffff;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-red);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-red);
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        /* Theme Toggle Button */
        .theme-toggle {
            background: var(--secondary-black);
            border: 2px solid var(--dark-gray);
            color: var(--light-gray);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: all 0.3s ease;
            margin-left: 1rem;
        }

        .theme-toggle:hover {
            background: var(--accent-red);
            border-color: var(--accent-red);
            color: white;
            transform: scale(1.1);
        }

        /* Mobile Menu Button */
        .mobile-menu {
            display: none;
            background: none;
            border: none;
            color: var(--light-gray);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
            transition: all 0.3s ease;
        }

        .mobile-menu:hover {
            color: var(--accent-red);
        }

        /* Mobile Navigation Controls */
        .nav-controls {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            background: var(--gradient-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::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 0 100 100"><defs><pattern id="grid" width="4" height="4" patternUnits="userSpaceOnUse"><path d="M 4 0 L 0 0 0 4" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .hero-content {
            max-width: 800px;
            z-index: 2;
            position: relative;
        }

        .hero h1 {
            font-size: 4rem;
            margin-bottom: 1rem;
            animation: fadeInUp 1s ease;
        }

        .hero .subtitle {
            font-size: 1.5rem;
            margin-bottom: 2rem;
            color: var(--medium-gray);
            animation: fadeInUp 1s ease 0.2s both;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            animation: fadeInUp 1s ease 0.4s both;
        }

        .btn {
            padding: 1rem 2rem;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary {
            background: #0077cc;
            color: white;
        }

        .btn-primary:hover {
            background: #005fa3;
            box-shadow: 0 10px 25px rgba(0, 119, 204, 0.3);
        }

        .btn-secondary {
            background: transparent;
            color: var(--light-gray);
            border: 2px solid var(--light-gray);
        }

        .btn-secondary:hover {
            background: var(--light-gray);
            color: var(--primary-black);
        }

        /* Services Section */
        .services {
            padding: 5rem 0;
            background: var(--secondary-black);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
            background: linear-gradient(45deg, var(--light-gray), var(--accent-red));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .service-card {
            background: var(--primary-black);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid var(--dark-gray);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 119, 204, 0.1), transparent);
            transition: left 0.5s ease;
        }

        .service-card:hover::before {
            left: 100%;
        }

        .service-card:hover {
            transform: translateY(-10px);
            border-color: var(--accent-red);
            box-shadow: 0 20px 40px rgba(0, 119, 204, 0.2);
        }

        .service-icon {
            font-size: 3rem;
            color: var(--accent-red);
            margin-bottom: 1rem;
            text-align: center;
        }

        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--light-gray);
            text-align: center;
        }

        .service-card p {
            color: var(--medium-gray);
            line-height: 1.6;
        }

        /* Tools Section */
        .tools {
            padding: 5rem 0;
            background: var(--primary-black);
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .tool-item {
            text-align: center;
            padding: 1.5rem;
            background: var(--secondary-black);
            border-radius: 10px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .tool-item:hover {
            transform: scale(1.05);
            border-color: var(--accent-red);
            background: var(--dark-gray);
        }

        .tool-item i {
            font-size: 2.5rem;
            color: var(--accent-red);
            margin-bottom: 1rem;
        }

        .tool-item span {
            font-weight: 500;
            color: var(--light-gray);
        }

        /* Contact Section */
        .contact {
            padding: 5rem 0;
            background: var(--secondary-black);
        }

        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .contact-info h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--accent-red);
        }

        .contact-info p {
            font-size: 1.1rem;
            color: var(--medium-gray);
            margin-bottom: 2rem;
        }

        .social-links {
            display: flex;
            gap: 1rem;
        }

        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: var(--primary-black);
            border-radius: 50%;
            color: var(--light-gray);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 2px solid var(--dark-gray);
        }

        .social-links a:hover {
            background: var(--accent-red);
            border-color: var(--accent-red);
            transform: translateY(-3px);
        }

        .contact-form {
            background: var(--primary-black);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid var(--dark-gray);
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--light-gray);
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 1rem;
            background: var(--secondary-black);
            border: 1px solid var(--dark-gray);
            border-radius: 8px;
            color: var(--light-gray);
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent-red);
        }

        /* Footer */
        .footer {
            background: var(--primary-black);
            color: var(--light-gray);
            padding: 3rem 1.5rem 1.5rem;
            text-align: center;
            border-top: 1px solid var(--dark-gray);
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2.5rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid var(--dark-gray);
        }

        .footer-logo {
            font-size: 2rem;
            color: var(--accent-red);
            margin-bottom: 1rem;
            font-weight: 700;
        }

        .footer-about p {
            line-height: 1.6;
            color: var(--medium-gray);
            margin-bottom: 1.5rem;
        }

        .footer-socials {
            display: flex;
            gap: 1rem;
            justify-content: space-evenly;
        }

        .footer-socials .social-link {
            color: #777777;
            font-size: 1.3rem;
            transition: color 0.3s ease;
            text-decoration: none;
        }

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

        .footer-links h3,
        .footer-contact h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            font-weight: 600;
            color: var(--accent-red);
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
        }

        .footer-links ul li {
            margin-bottom: 0.8rem;
        }

        .footer-links ul li a {
            color: var(--medium-gray);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-links ul li a:hover {
            color: var(--accent-red);
            text-decoration: underline;
        }

        .footer-contact p {
            margin-bottom: 1rem;
            color: var(--medium-gray);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .footer-contact i {
            color: var(--accent-red);
            font-size: 1.1rem;
        }

        .footer-bottom {
            text-align: center;
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--medium-gray);
            margin-top: 1.5rem;
        }

        /* Mobile Menu Overlay */
        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(10px);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-menu-overlay.active {
            opacity: 1;
            visibility: visible;
        }

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

        @keyframes slideInFromTop {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideOutToTop {
            from {
                opacity: 1;
                transform: translateY(0);
            }
            to {
                opacity: 0;
                transform: translateY(-20px);
            }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .mobile-menu {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 50%;
                transform: translateX(-50%);
                width: 90%;
                max-width: 400px;
                background: #ffffff;
                -webkit-text-fill-color: #000000;
                flex-direction: column;
                padding: 1.5rem;
                gap: 1rem;
                border-radius: 15px;
                border: 1px solid var(--dark-gray);
                box-shadow: 0 10px 30px #083daf;
                animation: slideOutToTop 0.3s ease forwards;
            }

            .nav-links.active {
                display: flex;
                animation: slideInFromTop 0.3s ease forwards;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero .subtitle {
                font-size: 1.2rem;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .services-grid,
            .tools-grid {
                grid-template-columns: 1fr;
            }

            .contact-content {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .nav-container {
                padding: 0 1rem;
            }

            .container {
                padding: 0 1rem;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .cta-buttons {
                gap: 0.5rem;
            }

            .btn {
                padding: 0.8rem 1.5rem;
                font-size: 1rem;
            }

            .theme-toggle {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }