: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 */
    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;
    }

    /* Page Header */
    .page-header {
        padding: 60px 0 40px;
        background: linear-gradient(135deg, #f0f9ff 0%, #e1f5fe 100%);
        text-align: center;
    }

    .page-header h1 {
        font-family: 'Poppins', sans-serif;
        font-size: 42px;
        font-weight: 700;
        background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        margin-bottom: 15px;
    }

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

    /* Content Section */
    .content-section {
        padding: 60px 0;
    }

    .content-card {
        background-color: white;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--shadow);
        padding: 40px;
        border-top: 5px solid var(--primary-color);
    }

    .content-card img {
        width: 50%;
        height: 300px;
        object-fit: cover;
        border-radius: 8px;
        margin-bottom: 30px;
        border: 3px solid var(--light-gray);
    }

    /* Mobil cihazlar için (örneğin 768px'den küçük ekranlar) */
    @media (max-width: 768px) {
        .content-card img {
            width: 100%;
        }
    }

    .content-card h2 {
        font-family: 'Poppins', sans-serif;
        font-size: 28px;
        font-weight: 600;
        color: var(--primary-dark);
        margin-bottom: 20px;
    }

    .content-card h3 {
        font-family: 'Poppins', sans-serif;
        font-size: 22px;
        font-weight: 600;
        color: var(--secondary-color);
        margin: 25px 0 15px;
        padding-left: 10px;
        border-left: 4px solid var(--primary-color);
    }

    .content-card p {
        color: var(--dark-color);
        font-size: 16px;
        line-height: 1.7;
        margin-bottom: 20px;
    }

    .content-card strong {
        color: var(--primary-dark);
    }

    .content-card ul {
        margin-left: 20px;
        margin-bottom: 20px;
    }

    .content-card li {
        color: var(--dark-color);
        font-size: 16px;
        line-height: 1.7;
        margin-bottom: 10px;
        position: relative;
        padding-left: 10px;
    }

    .content-card li::before {
        content: "•";
        color: var(--primary-color);
        font-weight: bold;
        position: absolute;
        left: -10px;
    }

    .contact-buttons {
        display: flex;
        gap: 20px;
        margin-top: 30px;
        flex-wrap: wrap;
    }

    .phone-btn,
    .whatsapp-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 28px;
        border-radius: 8px;
        text-decoration: none;
        font-weight: 600;
        font-size: 16px;
        transition: all 0.3s;
    }

    .phone-btn {
        background: linear-gradient(to right, var(--primary-color), var(--primary-dark));
        color: white;
    }

    .phone-btn:hover {
        background: linear-gradient(to right, var(--primary-dark), var(--primary-color));
        transform: translateY(-3px);
        box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
    }

    .whatsapp-btn {
        background: linear-gradient(to right, #25D366, #128C7E);
        color: white;
    }

    .whatsapp-btn:hover {
        background: linear-gradient(to right, #128C7E, #25D366);
        transform: translateY(-3px);
        box-shadow: 0 10px 20px rgba(37, 211, 102, 0.3);
    }

    /* Form Section */
    .form-section {
        padding: 60px 0;
        background-color: #f0f9ff;
    }

    .form-header {
        text-align: center;
        margin-bottom: 50px;
    }

    .form-header h2 {
        font-family: 'Poppins', sans-serif;
        font-size: 32px;
        font-weight: 700;
        background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        margin-bottom: 15px;
    }

    .form-header p {
        color: var(--gray-color);
        max-width: 600px;
        margin: 0 auto;
    }

    .form-container {
        background-color: white;
        border-radius: 12px;
        box-shadow: var(--shadow-lg);
        padding: 30px;
        max-width: 800px;
        margin: 0 auto;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }

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

    label {
        display: block;
        margin-bottom: 8px;
        font-weight: 500;
        color: var(--dark-color);
    }

    .required::after {
        content: " *";
        color: #ef4444;
    }

    .form-control {
        width: 100%;
        padding: 12px 15px;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        font-size: 16px;
        transition: all 0.3s;
    }

    .form-control:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
    }

    textarea.form-control {
        min-height: 120px;
        resize: vertical;
    }

    .submit-btn {
        background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        color: white;
        border: none;
        padding: 15px 30px;
        font-size: 16px;
        font-weight: 600;
        border-radius: 8px;
        cursor: pointer;
        width: 100%;
        transition: all 0.3s;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
    }

    .submit-btn:hover {
        background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
        transform: translateY(-2px);
        box-shadow: 0 6px 12px rgba(14, 165, 233, 0.25);
    }

    .submit-btn:disabled {
        opacity: 0.7;
        cursor: not-allowed;
        transform: none;
    }

    /* Error message styling */
    .error-message {
        color: #ef4444;
        font-size: 14px;
        margin-top: 5px;
        min-height: 20px;
    }

    /* Modal */
    .modal {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        align-items: center;
        justify-content: center;
    }

    .modal-content {
        background-color: white;
        border-radius: 12px;
        padding: 30px;
        max-width: 500px;
        width: 90%;
        box-shadow: var(--shadow-lg);
        text-align: center;
    }

    .modal-icon {
        width: 70px;
        height: 70px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 20px;
        font-size: 32px;
    }

    .modal-icon.success {
        background-color: #d1fae5;
        color: var(--secondary-color);
    }

    .modal-icon.error {
        background-color: #fee2e2;
        color: #ef4444;
    }

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

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

    .modal-close {
        background-color: var(--primary-color);
        color: white;
        border: none;
        padding: 12px 25px;
        border-radius: 8px;
        font-weight: 600;
        cursor: pointer;
    }

    /* Footer */
    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) {
        .logo-area {
            gap: 10px;
        }

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

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

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

        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;
        }

        .page-header h1 {
            font-size: 32px;
        }

        .page-header p {
            font-size: 16px;
        }

        .content-card {
            padding: 25px;
        }

        .content-card img {
            height: 250px;
        }

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

        .form-header h2 {
            font-size: 28px;
        }

        .form-container {
            padding: 20px;
        }
    }

    @media (max-width: 576px) {
        .logo-image {
            width: 60px;
            height: 60px;
        }

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

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

        .page-header h1 {
            font-size: 28px;
        }

        .content-card h2 {
            font-size: 24px;
        }

        .content-card h3 {
            font-size: 20px;
        }
    }

    @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;
        }
    }