:root {
            --primary-color: #0ea5e9;
            --primary-dark: #0369a1;
            --secondary-color: #6b7280;
            --accent-color: #d97706;
            --light-color: #f8fafc;
            --dark-color: #1f2937;
            --gray-color: #6b7280;
            --light-gray: #f3f4f6;
            --border-color: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }

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

        body {
            font-family: 'Roboto', sans-serif;
            line-height: 1.6;
            color: var(--dark-color);
            background-color: #f9fafb;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Logo Styles - Ana sayfadaki gibi */
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 15px;
            text-decoration: none;
            color: inherit;
        }

        .logo-image {
            width: 90px;
            height: 90px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: white;
        }

        .logo-image img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .logo-text-content {
            display: flex;
            flex-direction: column;
        }

        .logo-text-content h1 {
            font-family: 'Poppins', sans-serif;
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
            margin-bottom: 5px;
            position: relative;
            display: inline-block;
        }

        .logo-text-content h1::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 40px;
            height: 3px;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }

        .logo-text-content p {
            font-size: 14px;
            color: var(--gray-color);
            font-weight: 500;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .logo-text-content p span {
            display: inline-block;
            width: 4px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        nav ul li a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 500;
            font-size: 16px;
            transition: color 0.3s;
            position: relative;
        }

        nav ul li a:hover {
            color: var(--primary-color);
        }

        nav ul li a.active {
            color: var(--primary-color);
        }

        nav ul li a.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary-color);
        }

        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: width 0.3s;
        }

        nav ul li a:hover::after {
            width: 100%;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary-color);
            cursor: pointer;
        }

        /* Hero Section */
        .hero-about {
            padding: 100px 0 60px;
            background: linear-gradient(135deg, #f0f9ff 0%, #e1f5fe 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-about::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=500&q=80') no-repeat center center/cover;
            opacity: 0.1;
            border-radius: 50%;
            transform: translate(100px, -100px);
        }

        .hero-container {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .hero-container h1 {
            font-family: 'Poppins', sans-serif;
            font-size: 48px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .hero-container p {
            font-size: 20px;
            color: var(--gray-color);
            max-width: 800px;
            margin: 0 auto 30px;
        }

        .hero-breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            color: var(--gray-color);
        }

        .hero-breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s;
        }

        .hero-breadcrumb a:hover {
            color: var(--primary-dark);
        }

        .hero-breadcrumb span {
            color: var(--gray-color);
        }

        /* About Content Section */
        .about-content-section {
            padding: 80px 0;
        }

        .about-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        @media (max-width: 992px) {
            .about-container {
                grid-template-columns: 1fr;
            }
        }

        .about-text h2 {
            font-family: 'Poppins', sans-serif;
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .about-text p {
            color: var(--gray-color);
            margin-bottom: 20px;
            font-size: 17px;
            line-height: 1.8;
        }

        .about-image {
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            height: 500px;
            position: relative;
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .experience-badge {
            position: absolute;
            bottom: 30px;
            right: 30px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            padding: 25px 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }

        .experience-badge .number {
            font-family: 'Poppins', sans-serif;
            font-size: 42px;
            font-weight: 700;
            display: block;
            line-height: 1;
        }

        .experience-badge .text {
            font-size: 16px;
            font-weight: 500;
        }

        /* Mission Vision Section */
        .mission-vision-section {
            padding: 80px 0;
            background-color: var(--light-gray);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-family: 'Poppins', sans-serif;
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 15px;
        }

        .section-header p {
            font-size: 18px;
            color: var(--gray-color);
            max-width: 700px;
            margin: 0 auto;
        }

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

        @media (max-width: 992px) {
            .mission-vision-container {
                grid-template-columns: 1fr;
                max-width: 600px;
                margin: 0 auto;
            }
        }

        .mv-card {
            background-color: white;
            border-radius: 15px;
            padding: 40px 30px;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
            text-align: center;
            height: 100%;
        }

        .mv-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }

        .mv-card:nth-child(1) {
            border-top: 5px solid var(--primary-color);
        }

        .mv-card:nth-child(2) {
            border-top: 5px solid var(--secondary-color);
        }

        .mv-card:nth-child(3) {
            border-top: 5px solid var(--accent-color);
        }

        .mv-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 32px;
            color: white;
        }

        .mv-card:nth-child(1) .mv-icon {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        }

        .mv-card:nth-child(2) .mv-icon {
            background: linear-gradient(135deg, var(--secondary-color), #4b5563);
        }

        .mv-card:nth-child(3) .mv-icon {
            background: linear-gradient(135deg, var(--accent-color), #b45309);
        }

        .mv-card h3 {
            font-family: 'Poppins', sans-serif;
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--dark-color);
        }

        .mv-card p {
            color: var(--gray-color);
            margin-bottom: 25px;
        }

        /* Team Section */
        .team-section {
            padding: 80px 0;
        }

        .team-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        @media (max-width: 1200px) {
            .team-container {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 992px) {
            .team-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .team-container {
                grid-template-columns: 1fr;
            }
        }

        .team-card {
            background-color: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .team-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }

        .team-image {
            width: 100%;
            height: 250px;
            object-fit: cover;
        }

        .team-content {
            padding: 25px;
            text-align: center;
        }

        .team-content h3 {
            font-family: 'Poppins', sans-serif;
            font-size: 20px;
            font-weight: 600;
            color: var(--dark-color);
            margin-bottom: 5px;
        }

        .team-content .position {
            color: var(--primary-color);
            font-weight: 500;
            margin-bottom: 15px;
            display: block;
        }

        .team-content p {
            color: var(--gray-color);
            font-size: 14px;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .team-social {
            display: flex;
            justify-content: center;
            gap: 10px;
        }

        .team-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--light-gray);
            border-radius: 50%;
            color: var(--primary-dark);
            font-size: 14px;
            transition: all 0.3s;
        }

        .team-social a:hover {
            background-color: var(--primary-color);
            color: white;
        }

        /* Values Section */
        .values-section {
            padding: 80px 0;
            background-color: var(--light-gray);
        }

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

        @media (max-width: 992px) {
            .values-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .values-container {
                grid-template-columns: 1fr;
            }
        }

        .value-card {
            background-color: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: var(--shadow);
            transition: transform 0.3s;
            text-align: center;
        }

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

        .value-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 28px;
            color: white;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        }

        .value-card h3 {
            font-family: 'Poppins', sans-serif;
            font-size: 20px;
            font-weight: 600;
            color: var(--dark-color);
            margin-bottom: 15px;
        }

        .value-card p {
            color: var(--gray-color);
            font-size: 15px;
            line-height: 1.6;
        }

        /* Timeline Section */
        .timeline-section {
            padding: 80px 0;
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 100%;
            background-color: var(--primary-color);
        }

        @media (max-width: 768px) {
            .timeline::before {
                left: 30px;
            }
        }

        .timeline-item {
            display: flex;
            margin-bottom: 50px;
            position: relative;
        }

        @media (max-width: 768px) {
            .timeline-item {
                flex-direction: column;
            }
        }

        .timeline-date {
            flex: 0 0 200px;
            text-align: right;
            padding-right: 40px;
            font-family: 'Poppins', sans-serif;
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-dark);
        }

        @media (max-width: 768px) {
            .timeline-date {
                text-align: left;
                padding-left: 70px;
                margin-bottom: 15px;
                font-size: 20px;
            }
        }

        .timeline-content {
            flex: 1;
            padding-left: 40px;
            position: relative;
        }

        @media (max-width: 768px) {
            .timeline-content {
                padding-left: 70px;
            }
        }

        .timeline-content::before {
            content: '';
            position: absolute;
            left: -8px;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: white;
            border: 4px solid var(--primary-color);
        }

        @media (max-width: 768px) {
            .timeline-content::before {
                left: 22px;
            }
        }

        .timeline-content h3 {
            font-family: 'Poppins', sans-serif;
            font-size: 22px;
            font-weight: 600;
            color: var(--dark-color);
            margin-bottom: 10px;
        }

        .timeline-content p {
            color: var(--gray-color);
            line-height: 1.6;
        }

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

        .stats-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        @media (max-width: 992px) {
            .stats-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .stats-container {
                grid-template-columns: 1fr;
            }
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-family: 'Poppins', sans-serif;
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 10px;
            color: white;
        }

        .stat-text {
            font-size: 18px;
            opacity: 0.9;
        }

        /* Contact CTA Section */
        .contact-cta {
            padding: 80px 0;
            text-align: center;
            background-color: var(--light-gray);
        }

        .contact-cta h2 {
            font-family: 'Poppins', sans-serif;
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .contact-cta p {
            font-size: 18px;
            color: var(--gray-color);
            max-width: 700px;
            margin: 0 auto 40px;
        }

        .cta-btn {
            display: inline-block;
            padding: 16px 40px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: all 0.3s;
        }

        .cta-btn:hover {
            background: linear-gradient(135deg, var(--primary-dark), #0369a1);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
        }

        /* Footer - Ana sayfadaki gibi */
        footer {
            background: linear-gradient(to right, var(--secondary-color), var(--dark-color));
            color: white;
            padding: 60px 0 20px;
        }

        .footer-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        @media (max-width: 992px) {
            .footer-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .footer-container {
                grid-template-columns: 1fr;
            }
        }

        .footer-column h4 {
            font-family: 'Poppins', sans-serif;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
            color: white;
        }

        .footer-column h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--primary-color);
        }

        .footer-column p,
        .footer-column li {
            color: #d1d5db;
            margin-bottom: 10px;
        }

        .footer-column ul {
            list-style-type: none;
        }

        .footer-column li i {
            margin-right: 10px;
            color: var(--primary-color);
        }

        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            font-size: 18px;
            transition: all 0.3s;
        }

        .social-icons a:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 40px;
            margin-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #9ca3af;
            font-size: 14px;
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                box-shadow: var(--shadow);
                padding: 20px;
            }

            nav.active {
                display: block;
            }

            nav ul {
                flex-direction: column;
                gap: 15px;
            }

            .mobile-menu-btn {
                display: block;
            }

            .hero-container h1 {
                font-size: 36px;
            }

            .hero-container p {
                font-size: 18px;
            }

            .section-header h2 {
                font-size: 30px;
            }

            .about-text h2 {
                font-size: 30px;
            }

            .stat-number {
                font-size: 36px;
            }

            .contact-cta h2 {
                font-size: 30px;
            }

            .logo-area {
                gap: 10px;
            }

            .logo-image {
                width: 70px;
                height: 70px;
            }

            .logo-text-content h1 {
                font-size: 22px;
            }

            .logo-text-content p {
                font-size: 12px;
            }
        }

        @media (max-width: 576px) {
            .hero-container h1 {
                font-size: 32px;
            }

            .experience-badge {
                padding: 20px 15px;
            }

            .experience-badge .number {
                font-size: 32px;
            }

            .mv-card,
            .value-card {
                padding: 30px 20px;
            }

            .logo-image {
                width: 60px;
                height: 60px;
            }

            .logo-text-content h1 {
                font-size: 20px;
            }

            .logo-text-content p {
                font-size: 11px;
            }
        }

        @media (max-width: 400px) {
            .logo-area {
                gap: 10px;
            }

            .logo-image {
                width: 55px;
                height: 55px;
            }

            .logo-text-content h1 {
                font-size: 18px;
            }

            .logo-text-content p {
                font-size: 10px;
            }
        }