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

    /* قاعدة أمان الصور لضمان عدم تأثر التصميم بالأبعاد */
    img {
        max-width: 100%;
        height: auto !important;
    }

    body {
        font-family: Arial, sans-serif;
        background-color: #f5f5f5;
        color: #333;
        line-height: 1.6;
    }

    /* زر العودة للرئيسية */
    .back-to-home {
        position: fixed;
        top: 60px;
        right: 20px;
        background-color: #3498db;
        color: white;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        text-decoration: none;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        z-index: 1001;
        transition: all 0.3s ease;
    }

    .back-to-home:hover {
        background-color: #2980b9;
        transform: scale(1.1);
    }

    /* شريط التنقل */
    .main-nav {
        background-color: #2c3e50;
        padding: 15px 0;
        position: sticky;
        top: 0;
        z-index: 999;
    }

    .main-nav ul {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        list-style: none;
        gap: 20px;
    }

    .main-nav a {
        color: white;
        text-decoration: none;
        padding: 8px 15px;
        border-radius: 4px;
        transition: background-color 0.3s ease;
    }

    .main-nav a:hover {
        background-color: #3498db;
    }

    /* رأس الصفحة */
    .header-image {
        width: 100%;
        height: auto;
        display: block;
    }

    /* العناوين الرئيسية */
    h1,
    h2,
    h3 {
        color: #2c3e50;
        margin: 20px 0;
        text-align: center;
    }

    h1 {
        font-size: 2.5rem;
        padding: 20px;
        background-color: #ecf0f1;
    }

    h2 {
        font-size: 2rem;
        border-bottom: 2px solid #3498db;
        padding-bottom: 10px;
        margin-top: 40px;
    }

    h3 {
        font-size: 1.5rem;
        color: #2980b9;
        margin: 15px 0;
    }

    /* قسم المقالات (المحتوى الجديد) */
    .articles-section {
        padding: 40px 20px;
        background-color: white;
        margin: 20px 0;
        border-radius: 8px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .article-box {
        background-color: #f8f9fa;
        border-right: 4px solid #3498db;
        padding: 25px;
        margin: 30px 0;
        border-radius: 4px;
        box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
    }

    .article-title {
        color: #2c3e50;
        font-size: 1.8rem;
        margin-bottom: 15px;
        padding-bottom: 10px;
        border-bottom: 2px solid #3498db;
    }

    .article-subtitle {
        color: #3498db;
        font-size: 1.3rem;
        margin: 15px 0 10px 0;
    }

    .article-date {
        color: #7f8c8d;
        font-size: 0.9rem;
        margin-bottom: 15px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .article-date i {
        color: #3498db;
    }

    .article-content {
        font-size: 1.1rem;
        line-height: 1.8;
        color: #333;
        text-align: justify;
        margin-bottom: 20px;
    }

    .article-highlight {
        background-color: #ecf0f1;
        padding: 15px;
        border-right: 4px solid #2ecc71;
        margin: 15px 0;
        border-radius: 4px;
        font-style: italic;
    }

    .article-image {
        width: 100%;
        height: 300px;
        object-fit: cover;
        margin: 20px 0;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    /* جدول التنقل الداخلي */
    .page-navigation {
        background: white;
        padding: 20px;
        border-radius: 8px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        margin: 20px 0;
        position: sticky;
        top: 80px;
        z-index: 998;
    }

    .nav-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .nav-links a {
        background: #3498db;
        color: white;
        padding: 8px 15px;
        border-radius: 4px;
        text-decoration: none;
        transition: all 0.3s ease;
        font-size: 14px;
    }

    .nav-links a:hover {
        background: #2980b9;
        transform: translateY(-2px);
    }

    /* معرض الصور */
    .gallery-section {
        padding: 40px 20px;
        background-color: white;
        margin: 20px 0;
        border-radius: 8px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .gallery-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 25px;
        margin-top: 30px;
    }

    .gallery-item {
        background-color: #f9f9f9;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
        transition: transform 0.3s ease;
        position: relative;
    }

    .gallery-item:hover {
        transform: translateY(-5px);
    }

    .gallery-item img {
        width: 100%;
        height: 250px;
        object-fit: cover;
        display: block;
    }

    /* الأيقونات الصغيرة في الزاوية */
    .image-icons {
        position: absolute;
        top: 10px;
        left: 10px;
        display: flex;
        gap: 8px;
        z-index: 2;
    }

    .icon-btn {
        background-color: rgba(255, 255, 255, 0.9);
        color: #333;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        cursor: pointer;
        transition: all 0.3s ease;
        border: none;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .icon-btn:hover {
        background-color: white;
        transform: scale(1.1);
    }

    .icon-btn.phone {
        color: #3498db;
    }

    .icon-btn.whatsapp {
        color: #25D366;
    }

    .image-title {
        position: absolute;
        bottom: 10px;
        right: 10px;
        background-color: rgba(0, 0, 0, 0.7);
        color: white;
        padding: 8px 12px;
        border-radius: 4px;
        font-size: 14px;
        max-width: 80%;
    }

    /* شريط أدوات التطوير */
    .dev-tools-bar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background-color: #202124;
        color: white;
        padding: 8px 15px;
        font-size: 12px;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 9999;
        border-bottom: 1px solid #3c4043;
    }

    .dev-tools-left,
    .dev-tools-center,
    .dev-tools-right {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .dev-select {
        background-color: #3c4043;
        color: white;
        border: 1px solid #5f6368;
        padding: 2px 5px;
        border-radius: 3px;
        font-size: 11px;
    }

    .dev-tab {
        color: #9aa0a6;
        font-size: 11px;
    }

    .dev-active-tab {
        color: white;
        border-bottom: 2px solid #8ab4f8;
        padding-bottom: 2px;
    }

    .dev-switch {
        color: #8ab4f8;
        font-size: 11px;
        cursor: pointer;
    }

    /* التذييل */
    footer {
        background-color: #1a252f;
        color: white;
        padding: 40px 20px;
        text-align: center;
        margin-top: 40px;
    }

    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
    }

    .copyright {
        margin-top: 30px;
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        color: #95a5a6;
    }

    /* زر الاتصال العائم */
    .floating-phone {
        position: fixed;
        bottom: 30px;
        left: 30px;
        background-color: #2ecc71;
        color: white;
        width: 60px;
        height: 60px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        text-decoration: none;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        z-index: 1000;
        transition: all 0.3s ease;
    }

    .floating-phone:hover {
        background-color: #27ae60;
        transform: scale(1.1);
    }

    /* مساحة المحتوى الرئيسي */
    .main-content {
        margin-top: 40px;
    }

    /* وسائط الاستجابة */
    @media (max-width: 768px) {
        .main-nav ul {
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .back-to-home {
            top: 50px;
            right: 15px;
            width: 45px;
            height: 45px;
            font-size: 18px;
        }

        .gallery-grid {
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        }

        h1 {
            font-size: 2rem;
        }

        h2 {
            font-size: 1.5rem;
        }

        h3 {
            font-size: 1.2rem;
        }

        .dev-tools-bar {
            flex-direction: column;
            height: auto;
            padding: 5px;
        }

        .dev-tools-left,
        .dev-tools-center,
        .dev-tools-right {
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }

        .icon-btn {
            width: 35px;
            height: 35px;
            font-size: 16px;
        }

        .article-title {
            font-size: 1.5rem;
        }

        .article-subtitle {
            font-size: 1.1rem;
        }

        .nav-links {
            flex-direction: column;
            align-items: center;
        }

        .nav-links a {
            width: 100%;
            text-align: center;
        }

        .page-navigation {
            position: static;
        }
    }

    @media (max-width: 480px) {
        .gallery-grid {
            grid-template-columns: 1fr;
        }

        .gallery-item img {
            height: 200px;
        }

        .image-title {
            font-size: 12px;
            padding: 6px 10px;
        }

        .article-title {
            font-size: 1.3rem;
        }

        .article-content {
            font-size: 1rem;
        }
    }

    /* إضافة أنماط CSS داخل الوسم style */
    .type-card:hover {
        transform: translateY(-10px);
    }

    .shape-item:hover {
        background-color: #edf2f7 !important;
        transform: translateX(-5px);
    }

    .related-link a:hover {
        background-color: rgba(255, 255, 255, 0.25) !important;
        transform: scale(1.05);
    }

    @media (max-width: 768px) {
        .types-grid {
            grid-template-columns: 1fr !important;
        }

        .shapes-grid {
            grid-template-columns: 1fr !important;
        }
    }

    @media (max-width: 480px) {
        .type-card {
            padding: 20px !important;
        }

        .shape-item {
            flex-direction: column;
            text-align: center;
            padding: 20px !important;
        }

        .shape-icon {
            margin-left: 0 !important;
            margin-bottom: 15px;
        }
    }

    /* إضافة أنماط CSS داخل الوسم style للتجاوبية */
    .material-content,
    .installation-steps,
    .table-row {
        display: flex;
        flex-wrap: wrap;
    }

    .feature-item:hover,
    .step-card:hover {
        transform: translateY(-5px);
        transition: transform 0.3s ease;
    }

    .contact-cta a:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
    }

    /* تجاوبية للشاشات الصغيرة */
    @media (max-width: 768px) {
        .section-header {
            flex-direction: column;
            text-align: center;
        }

        .header-icon {
            margin-left: 0 !important;
            margin-bottom: 15px;
        }

        .material-content {
            flex-direction: column;
        }

        .material-text,
        .material-image {
            min-width: 100% !important;
        }

        .table-row {
            flex-direction: column;
        }

        .table-cell {
            min-width: 100% !important;
            border-bottom: 1px solid #eee;
            padding: 12px !important;
        }

        .table-cell:last-child {
            border-bottom: none;
        }

        .table-header .table-cell {
            border-bottom: 1px solid #4a627a;
        }

        .step-card {
            min-width: 100% !important;
            max-width: 100% !important;
        }

        .contact-cta a {
            flex-direction: column;
            padding: 12px 20px !important;
            font-size: 1rem !important;
        }

        .contact-cta i {
            margin-bottom: 8px;
        }
    }

    @media (max-width: 480px) {
        .lexan-details-section {
            padding: 30px 15px !important;
        }

        h2 {
            font-size: 1.6rem !important;
        }

        h3 {
            font-size: 1.3rem !important;
        }

        .feature-item {
            flex-direction: column;
            align-items: center !important;
            text-align: center;
        }

        .feature-icon {
            margin-left: 0 !important;
            margin-bottom: 10px;
        }

        .material-image div {
            padding: 20px !important;
        }

        .material-image i {
            font-size: 60px !important;
        }

        .step-card {
            padding: 20px !important;
        }

        .company-commitment {
            padding: 20px 15px !important;
        }

        .price-note {
            padding: 15px !important;
        }
    }

    /* تجاوبية للشاشات المتوسطة */
    @media (min-width: 769px) and (max-width: 1024px) {
        .step-card {
            min-width: calc(50% - 20px) !important;
            max-width: calc(50% - 20px) !important;
        }

        .table-cell {
            min-width: 120px !important;
        }
    }

    /* زر شجرة التنقل تحت زر الرئيسية */
    .nav-tree-btn {
        position: fixed;
        top: 120px;
        /* تحت زر الرئيسية */
        right: 20px;
        /* نفس مكان زر الرئيسية */
        background-color: #e74c3c;
        color: white;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        z-index: 1001;
        transition: all 0.3s ease;
        cursor: pointer;
        border: none;
    }

    .nav-tree-btn:hover {
        background-color: #c0392b;
        transform: scale(1.1);
    }

    /* شجرة التنقل */
    #navTree {
        display: none;
        position: fixed;
        top: 180px;
        /* تحت زر الشجرة */
        right: 20px;
        /* نفس مكان زر الشجرة */
        background-color: white;
        border-radius: 8px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        padding: 20px;
        z-index: 1002;
        width: 300px;
        max-height: 400px;
        overflow-y: auto;
        direction: rtl;
    }

    #navTree.active {
        display: block;
    }

    #navTree h3 {
        color: #2c3e50;
        margin-bottom: 15px;
        border-bottom: 2px solid #3498db;
        padding-bottom: 10px;
        text-align: center;
    }

    #navTree ul {
        list-style: none;
        padding: 0;
    }

    #navTree li {
        margin-bottom: 10px;
    }

    #navTree a {
        color: #3498db;
        text-decoration: none;
        display: flex;
        align-items: center;
        padding: 8px 12px;
        border-radius: 4px;
        transition: all 0.3s;
        font-weight: bold;
    }

    #navTree a:hover {
        background-color: #f0f7ff;
        transform: translateX(-5px);
    }

    #navTree a i {
        margin-left: 10px;
        color: #3498db;
    }

    /* تجاوبية */
    @media (max-width: 768px) {
        .nav-tree-btn {
            top: 105px;
            right: 15px;
            width: 45px;
            height: 45px;
            font-size: 18px;
        }

        #navTree {
            top: 160px;
            right: 15px;
            width: 280px;
        }
    }

    @media (max-width: 480px) {
        #navTree {
            width: 90%;
            right: 5%;
            left: 5%;
        }
    }

    @media (max-width: 768px) {
        .gallery-image-full img {
            height: 300px !important;
        }

        .gallery-article {
            padding: 20px !important;
        }

        .color-palette>div {
            grid-template-columns: repeat(3, 1fr) !important;
        }

        .cost-comparison>div,
        .design-categories>div {
            grid-template-columns: 1fr !important;
        }

        .luxury-features>div {
            grid-template-columns: repeat(2, 1fr) !important;
        }

        h3 {
            font-size: 1.5rem !important;
        }
    }

    @media (max-width: 480px) {
        .gallery-image-full img {
            height: 250px !important;
        }

        .image-title {
            font-size: 14px !important;
            padding: 8px 15px !important;
        }

        .color-palette>div {
            grid-template-columns: repeat(2, 1fr) !important;
        }

        .luxury-features>div {
            grid-template-columns: 1fr !important;
        }

        .technical-specs>div,
        .smart-features>div,
        .financial-analysis>div {
            grid-template-columns: repeat(2, 1fr) !important;
        }
    }

    /* تأثيرات التفاعل */
    .gallery-item-container:hover {
        transform: translateY(-5px);
        transition: transform 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
    }

    .color-palette>div>div:hover {
        transform: scale(1.1);
        transition: transform 0.3s ease;
    }

    .cost-comparison>div>div:hover {
        transform: translateY(-5px);
        transition: transform 0.3s ease;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    /* تأثيرات دخول عند التمرير */
    .gallery-item-container {
        animation: fadeInUp 0.8s ease-out;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }

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

    /* أنيميشن للخلفية المتغيرة */
    @keyframes slideChange {
        0% {
            opacity: 0;
        }

        33% {
            opacity: 0.15;
        }

        66% {
            opacity: 0;
        }

        100% {
            opacity: 0;
        }
    }

    /* تحسينات التجاوبية للقسم */
    @media (max-width: 992px) {
        .application-item>div {
            flex-direction: column !important;
        }

        .application-image {
            min-height: 250px !important;
        }

        .applications-conclusion>div {
            grid-template-columns: repeat(2, 1fr) !important;
        }
    }

    @media (max-width: 768px) {
        .applications-section {
            padding: 30px 15px !important;
        }

        .application-content {
            padding: 20px !important;
        }

        .application-header {
            padding: 20px !important;
        }

        .features-grid,
        .use-cases>div,
        .medical-features>div,
        .entertainment-types>div {
            grid-template-columns: 1fr !important;
        }

        .office-types>div {
            flex-direction: column !important;
        }

        .hygiene-standards>div,
        .luxury-features>div {
            grid-template-columns: repeat(2, 1fr) !important;
        }

        .design-options>div {
            flex-wrap: wrap !important;
        }

        .applications-conclusion>div {
            grid-template-columns: 1fr !important;
        }

        .applications-conclusion .cta-buttons {
            flex-direction: column !important;
            gap: 15px !important;
        }
    }

    @media (max-width: 480px) {
        .application-image {
            min-height: 200px !important;
        }

        .hygiene-standards>div,
        .luxury-features>div {
            grid-template-columns: 1fr !important;
        }

        .certifications>div {
            flex-direction: column !important;
        }

        h2 {
            font-size: 1.8rem !important;
        }

        h3 {
            font-size: 1.4rem !important;
        }
    }

    /* تأثيرات التفاعل */
    .application-item:hover {
        transform: translateY(-5px);
        transition: transform 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
    }

    .features-grid>div:hover,
    .use-cases>div>div:hover,
    .office-types>div>div:hover {
        transform: translateY(-3px);
        transition: transform 0.3s ease;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .applications-conclusion>div>div:hover {
        transform: scale(1.05);
        transition: transform 0.3s ease;
    }

    /* تأثيرات دخول عند التمرير */
    .application-item {
        animation: slideInUp 0.8s ease-out;
    }

    @keyframes slideInUp {
        from {
            opacity: 0;
            transform: translateY(50px);
        }

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

    /* تنسيق الروابط */
    .cta a:hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
    }

    .applications-conclusion a:hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }
















        @keyframes pulse-whatsapp {
            0% {
                box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
            }

            70% {
                box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
            }

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