:root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --secondary: #10b981;
            --accent: #f59e0b;

            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e5e7eb;

            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

            --radius: 1rem;
            --radius-lg: 1.5rem;
            --radius-full: 9999px;

            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

            /* Deneme Sınavları Özel Renk Teması - Turuncu/Amber */
            --theme-primary: #f59e0b;
            --theme-secondary: #fbbf24;
            --theme-gradient: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Poppins', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Container */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* ============================================
           MODERN NAVBAR WITH PROMINENT BUTTONS
        ============================================ */

        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 0.75rem 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
        }

        .logo {
            font-family: 'Montserrat', sans-serif;
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo img {
            height: 42px;
            width: auto;
            object-fit: contain;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
            align-items: center;
        }

        .nav-links a {
            color: var(--text);
            text-decoration: none;
            font-weight: 500;
            position: relative;
            padding: 0.5rem 0;
            font-size: 0.9rem;
            white-space: nowrap;
        }

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

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

        /* PROMINENT LOGIN BUTTONS */
        .auth-buttons {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }

        .btn {
            padding: 0.7rem 1.25rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.85rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            white-space: nowrap;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.15);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .btn:hover::before {
            transform: scaleX(1);
        }

        .btn span,
        .btn i {
            position: relative;
            z-index: 1;
        }

        .btn-student {
            background: linear-gradient(135deg, #2563eb, #3b82f6);
            color: white;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
        }

        .btn-student:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
        }

        .btn-teacher {
            background: linear-gradient(135deg, #10b981, #34d399);
            color: white;
            box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
        }

        .btn-teacher:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
        }

        .btn-parent {
            background: linear-gradient(135deg, #8b5cf6, #a78bfa);
            color: white;
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
        }

        .btn-parent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: white;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            padding: 0.5rem;
            background: var(--bg-alt);
            border: 2px solid var(--border);
            border-radius: 8px;
            z-index: 1002;
            position: fixed;
            right: 1rem;
            top: 0.75rem;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--primary);
            border-color: var(--primary);
        }

        .mobile-toggle:hover span {
            background: white;
        }

        .mobile-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .mobile-toggle.active {
            background: var(--primary);
            border-color: var(--primary);
        }

        .mobile-toggle.active span {
            background: white;
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        .mobile-auth {
            display: none;
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 1.5rem;
            }

            .nav-links {
                display: none;
            }

            .nav-links .mobile-auth {
                display: flex !important;
            }

            .desktop-auth {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-links.active {
                display: flex;
                position: fixed;
                top: 0 !important;
                left: 0 !important;
                right: 0 !important;
                bottom: 0 !important;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 2rem;
                z-index: 1001;
                animation: slideInMenu 0.3s ease;
                padding: 2rem;
                margin: 0 !important;
                width: 100vw !important;
                height: 100vh !important;
                overflow-y: auto;
            }

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

                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            .nav-links.active a {
                font-size: 1.5rem;
                font-weight: 700;
                padding: 0.75rem 1.5rem;
                border-radius: var(--radius-full);
                transition: var(--transition);
                color: var(--text);
                text-align: center;
                width: auto;
                text-decoration: none;
            }

            .nav-links.active a::after {
                display: none;
            }

            .nav-links.active a:hover {
                background: var(--primary);
                color: white;
                transform: scale(1.05);
                text-decoration: none;
            }

            .nav-links.active .auth-buttons {
                flex-direction: column;
                width: 85%;
                max-width: 320px;
                gap: 1rem;
            }

            .nav-links.active .auth-buttons .btn {
                width: 100%;
                justify-content: center;
                white-space: nowrap;
                padding: 1rem 1.5rem;
                font-size: 1rem;
                display: flex;
                align-items: center;
                gap: 0.75rem;
            }

            .nav-links.active .auth-buttons .btn span {
                display: inline;
                overflow: visible;
                text-overflow: clip;
            }
        }

        /* Hero Section */
        .hero {
            background: var(--theme-gradient);
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
            color: white;
        }

        .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 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: bottom;
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            margin-bottom: 2rem;
            backdrop-filter: blur(10px);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 900;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            font-family: 'Montserrat', sans-serif;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .hero-description {
            font-size: 1.25rem;
            margin-bottom: 2.5rem;
            line-height: 1.8;
            opacity: 0.95;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .stat-box {
            background: rgba(255, 255, 255, 0.15);
            padding: 2rem;
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 900;
            font-family: 'Montserrat', sans-serif;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 1rem;
            opacity: 0.9;
        }

        /* CTA Buttons */
        .cta-buttons {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            margin-top: 2rem;
        }

        .btn {
            padding: 1.25rem 2.5rem;
            border-radius: var(--radius);
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            transition: var(--transition);
            font-size: 1.1rem;
            border: none;
            cursor: pointer;
        }

        .btn-white {
            background: white;
            color: var(--theme-primary);
        }

        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        .btn-outline {
            background: transparent;
            color: white;
            border: 2px solid white;
        }

        .btn-outline:hover {
            background: white;
            color: var(--theme-primary);
        }

        /* Services Section */
        .services {
            padding: 100px 0;
            background: var(--bg-alt);
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-badge {
            display: inline-block;
            background: var(--theme-gradient);
            color: white;
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: 0.9rem;
        }

        .section-title {
            font-size: 2.75rem;
            font-weight: 800;
            margin-bottom: 1rem;
            font-family: 'Montserrat', sans-serif;
            color: var(--text);
        }

        .section-description {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2.5rem;
        }

        .service-card {
            background: var(--bg);
            padding: 3rem;
            border-radius: var(--radius-lg);
            border: 2px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--theme-gradient);
            transform: scaleX(0);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-xl);
            border-color: var(--theme-primary);
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-icon {
            width: 80px;
            height: 80px;
            background: var(--theme-gradient);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: white;
            margin-bottom: 2rem;
        }

        .service-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text);
        }

        .service-description {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .service-features {
            list-style: none;
            margin-top: 1.5rem;
        }

        .service-features li {
            padding: 0.75rem 0;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border);
        }

        .service-features li:last-child {
            border-bottom: none;
        }

        .service-features i {
            color: var(--theme-primary);
            font-size: 1.1rem;
        }

        /* Features Section */
        .features {
            padding: 100px 0;
            background: var(--bg);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2.5rem;
            margin-top: 4rem;
        }

        .feature-card {
            text-align: center;
            padding: 2.5rem;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .feature-icon {
            width: 100px;
            height: 100px;
            background: var(--theme-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 2rem;
            font-size: 3rem;
            color: white;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text);
        }

        .feature-card p {
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Process Section */
        .process {
            padding: 100px 0;
            background: var(--bg-alt);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 4rem;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 50px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: var(--theme-gradient);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 100px;
            height: 100px;
            background: var(--theme-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2.5rem;
            font-weight: 900;
            color: white;
            font-family: 'Montserrat', sans-serif;
            border: 5px solid white;
            box-shadow: var(--shadow-lg);
        }

        .step-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text);
        }

        .step-description {
            color: var(--text-light);
            line-height: 1.7;
        }

        /* FAQ Section */
        .faq {
            padding: 100px 0;
            background: var(--bg);
        }

        .faq-container {
            max-width: 900px;
            margin: 4rem auto 0;
        }

        .faq-item {
            background: var(--bg-alt);
            border: 2px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 1.5rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--theme-primary);
        }

        .faq-question {
            padding: 2rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1.5rem;
            user-select: none;
        }

        .faq-question h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text);
        }

        .faq-question i {
            color: var(--theme-primary);
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 2rem 2rem;
        }

        .faq-answer p {
            color: var(--text-light);
            line-height: 1.8;
        }

        /* CTA Section */
        .cta-section {
            padding: 100px 0;
            background: var(--theme-gradient);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-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 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z"></path></svg>');
            background-size: cover;
            background-position: top;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 3rem;
            font-weight: 900;
            margin-bottom: 1.5rem;
            font-family: 'Montserrat', sans-serif;
        }

        .cta-description {
            font-size: 1.25rem;
            margin-bottom: 2.5rem;
            opacity: 0.95;
        }

        /* Footer */
        .footer {
            background: var(--text);
            color: white;
            padding: 4rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            font-family: 'Montserrat', sans-serif;
            color: var(--theme-primary);
        }

        .footer-description {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

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

        .social-link {
            width: 50px;
            height: 50px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }

        .social-link:hover {
            background: var(--theme-primary);
            transform: translateY(-3px);
        }

        .footer-column h4 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--theme-primary);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.75rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--theme-primary);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
        }

        /* WhatsApp Button */
        .whatsapp-float {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #25D366, #128C7E);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 2rem;
            text-decoration: none;
            box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
            z-index: 999;
            transition: var(--transition);
            animation: pulse 2s infinite;
        }

        .whatsapp-float:hover {
            transform: scale(1.1) translateY(-5px);
            box-shadow: 0 15px 40px rgba(37, 211, 102, 0.5);
        }

        @keyframes pulse {

            0%,
            100% {
                box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
            }

            50% {
                box-shadow: 0 10px 30px rgba(37, 211, 102, 0.7);
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-links.active {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 0;
                right: 0;
                width: 100%;
                max-width: 400px;
                height: 100vh;
                background: var(--bg);
                box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
                padding: 6rem 2rem 2rem;
                gap: 1.5rem;
                z-index: 1000;
                animation: slideInMenu 0.3s ease;
            }

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

            .features-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .process-steps::before {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .hero-stats {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }

            .logo img {
                height: 35px;
            }

            .mobile-toggle {
                right: 0.5rem;
                top: 0.5rem;
                padding: 0.4rem;
            }

            .hero {
                padding: 100px 0 60px;
            }

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

            .hero-description {
                font-size: 1.1rem;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

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

            .stat-number {
                font-size: 2rem;
            }

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

            .whatsapp-float {
                width: 60px;
                height: 60px;
                font-size: 1.75rem;
                bottom: 1.5rem;
                right: 1.5rem;
            }
        }

        @keyframes slideInMenu {
            from {
                transform: translateX(100%);
            }

            to {
                transform: translateX(0);
            }
        }