/* Reset & Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --color-white: #FFFFFF;
            --color-gray-ultra-light: #F8F9FA;
            --color-gray-light: #E5E5E5;
            --color-gray-medium: #808080;
            --color-gray-dark: #2D2D2D;
            --color-gray-steel: #4A5A7A;
            --color-gray-blue: #6B7A8A;
            --color-orange-subtle: #C4956B;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Helvetica Neue', 'Roboto', sans-serif;
            color: var(--color-gray-dark);
            background-color: var(--color-white);
            line-height: 1.7;
            font-weight: 400;
        }

        /* Typography */
        h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-gray-dark);
        }

        h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-gray-dark);
            margin-bottom: 24px;
        }

        h3 {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-gray-dark);
            margin-bottom: 16px;
        }

        p {
            margin-bottom: 16px;
            line-height: 1.7;
        }

        a {
            color: var(--color-gray-dark);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: var(--color-gray-steel);
            text-decoration: underline;
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            transition: transform 0.3s ease, opacity 0.3s ease;
            border-bottom: 1px solid var(--color-gray-steel);
        }

        header.hidden {
            transform: translateY(-100%);
            opacity: 0;
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo-container {
            height: 70px;
        }

        .logo-container img {
            height: 100%;
            width: auto;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 32px;
            align-items: center;
        }

        nav a {
            font-size: 18px;
            font-weight: 500;
            color: var(--color-gray-steel);
            text-decoration: none;
        }

        nav a:hover {
            color: var(--color-gray-dark);
        }

        .btn-extranet {
            padding: 8px 20px;
            background-color: transparent;
            color: var(--color-gray-steel);
            border: 1px solid var(--color-gray-steel);
            border-radius: 4px;
            font-weight: 500;
        }

        .btn-extranet:hover {
            background-color: var(--color-gray-steel);
            color: var(--color-white);
            text-decoration: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--color-gray-dark);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* Hero Section */
        .hero {
            margin-top: 82px;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            overflow: hidden;
            background-color: var(--color-gray-ultra-light);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('../img/datacenterblanc_OK.jpg');
            background-size: 120%;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
            transition: background-size 0.5s ease;
        }

        .hero:hover::before {
            background-size: 130%;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            padding: 48px 24px;
        }

        .hero h1 {
            margin-bottom: 24px;
        }

        .hero .tagline {
            font-size: 18px;
            color: var(--color-gray-steel);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .btn-primary {
            display: inline-block;
            padding: 16px 40px;
            background-color: var(--color-gray-steel);
            color: var(--color-white);
            font-size: 17px;
            font-weight: 500;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
        }

        .btn-primary:hover {
            background-color: var(--color-gray-dark);
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(74, 90, 122, 0.3);
        }

        /* Sections */
        section {
            padding: 80px 24px;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .section-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-gray {
            background-color: var(--color-gray-ultra-light);
        }

        /* About Section */
        .about-section {
            display: flex;
            gap: 48px;
            align-items: flex-start;
        }

        .about-content {
            flex: 1;
        }

        .about-content p {
            font-size: 16px;
            margin-bottom: 24px;
            color: var(--color-gray-steel);
        }

        .about-image {
            width: 300px;
            flex-shrink: 0;
        }

        .about-image img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            opacity: 0.4;
        }

        /* Competences Section */
        #competences {
            position: relative;
            overflow: hidden;
        }

        #competences::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('../img/texture_bleue_violet.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
            pointer-events: none;
        }

        #competences .section-container {
            position: relative;
            z-index: 1;
        }

        .competences-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
            color: var(--color-gray-steel);
            font-size: 24px;
        }

        .competences-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .competences-column h3 {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
        }

        .icon {
            width: 28px;
            height: 28px;
            color: var(--color-gray-steel);
        }

        .competences-list {
            list-style: none;
        }

        .competences-list li {
            padding: 12px 0;
            padding-left: 32px;
            position: relative;
            color: var(--color-gray-steel);
            line-height: 1.6;
        }

        .competences-list li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--color-gray-steel);
            font-weight: 600;
        }

        /* Services Section */
        .services-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
            color: var(--color-gray-steel);
            font-size: 24px;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .service-card {
            padding: 32px;
            background-color: var(--color-white);
            border: 1px solid var(--color-gray-light);
            border-radius: 8px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-gray-steel), var(--color-gray-blue));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .service-card:hover {
            box-shadow: 0 4px 16px rgba(74, 90, 122, 0.15);
            transform: translateY(-4px);
            border-color: var(--color-gray-steel);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 80px;
            height: 80px;
            margin-bottom: 16px;
            border-radius: 4px;
            object-fit: cover;
            opacity: 0.7;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--color-gray-steel);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Vitrine Section */
        .vitrine-content {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .vitrine-content p {
            font-size: 18px;
            line-height: 1.8;
            color: var(--color-gray-steel);
        }

        /* Pricing Section */
        .pricing-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
            color: var(--color-gray-steel);
            font-size: 24px;
        }

        .pricing-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            margin: 0 auto 32px;
        }

        .pricing-card {
            background-color: var(--color-white);
            border: 2px solid var(--color-gray-light);
            border-radius: 8px;
            padding: 32px;
            position: relative;
            transition: all 0.3s ease;
            width: 300px;
            flex-shrink: 0;
        }

        .pricing-card:hover {
            border-color: var(--color-gray-steel);
            box-shadow: 0 8px 24px rgba(74, 90, 122, 0.15);
            transform: translateY(-4px);
        }

        .recommended-badge {
            position: absolute;
            top: -12px;
            right: 24px;
            background-color: var(--color-gray-steel);
            color: var(--color-white);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            background-color: var(--color-orange-subtle);
        }

        .pricing-card h3 {
            font-size: 22px;
            margin-bottom: 20px;
            color: var(--color-gray-dark);
        }

        .pricing-features {
            list-style: none;
            margin-bottom: 24px;
        }

        .pricing-features li {
            padding: 8px 0;
            padding-left: 24px;
            position: relative;
            font-size: 14px;
            color: var(--color-gray-steel);
        }

        .pricing-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-gray-dark);
            font-weight: 700;
        }

        .pricing-price {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-gray-dark);
            margin: 20px 0;
            font-size: 18px;
        }

        .pricing-setup {
            font-size: 14px;
            color: var(--color-gray-medium);
            margin-bottom: 24px;
        }

        .btn-pricing {
            width: 100%;
            padding: 12px 24px;
            background-color: var(--color-gray-steel);
            color: var(--color-white);
            border: none;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-pricing:hover {
            background-color: var(--color-gray-dark);
            box-shadow: 0 4px 12px rgba(74, 90, 122, 0.3);
        }

        .pricing-note {
            font-size: 16px;
            color: var(--color-gray-steel);
            text-align: center;
            margin-top: 24px;
        }

        /* Custom Services Section */
        .custom-services {
            background-color: rgba(107, 122, 138, 0.05);
            padding: 80px 24px;
        }

        .custom-services-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
            color: var(--color-gray-steel);
            font-size: 24px;
        }

        .custom-services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .custom-service-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-gray-steel);
            border-radius: 8px;
            padding: 32px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .custom-service-card:hover {
            box-shadow: 0 8px 24px rgba(74, 90, 122, 0.15);
            transform: translateY(-4px);
            border-color: var(--color-gray-dark);
        }

        .custom-service-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background-color: rgba(74, 90, 122, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .custom-service-icon svg {
            width: 32px;
            height: 32px;
            color: var(--color-gray-steel);
        }

        .custom-service-card h3 {
            font-size: 20px;
            margin-bottom: 16px;
        }

        .custom-service-card p {
            font-size: 14px;
            color: var(--color-gray-steel);
            line-height: 1.6;
        }

        .pricing-cta {
            text-align: center;
            margin-top: 48px;
        }

        /* Contact Section */
        .contact-header {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            margin-bottom: 24px;
        }

        .contact-header img {
            width: 100px;
            height: auto;
            opacity: 0.6;
        }

        .contact-intro {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
            color: var(--color-gray-steel);
        }

        .contact-form {
            max-width: 700px;
            margin: 0 auto;
            background-color: var(--color-white);
            padding: 40px;
            border: 1px solid var(--color-gray-light);
            border-radius: 8px;
        }

        .form-group {
            margin-bottom: 24px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 14px;
            color: var(--color-gray-dark);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--color-gray-light);
            border-radius: 4px;
            font-size: 16px;
            font-family: inherit;
            color: var(--color-gray-dark);
            background-color: var(--color-white);
            transition: border-color 0.3s ease;
        }

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

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

        .hp {
            position: absolute;
            left: -9999px;
            width: 1px;
            height: 1px;
            opacity: 0;
        }

        .form-message {
            padding: 16px;
            margin-bottom: 24px;
            border-radius: 4px;
            text-align: center;
            display: none;
        }

        .form-message.success {
            background-color: var(--color-gray-ultra-light);
            color: var(--color-gray-dark);
            border: 1px solid var(--color-gray-light);
        }
        .form-message:not(.success) {
            background-color: #ffe0e0;
            color: #a00;
            border: 1px solid #f5b5b5;
        }
        /* Footer */
        footer {
            background-color: var(--color-gray-ultra-light);
            padding: 60px 24px 40px;
            border-top: 2px solid var(--color-gray-steel);
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-column h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--color-gray-dark);
        }

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

        .footer-column li {
            margin-bottom: 12px;
            font-size: 13px;
            color: var(--color-gray-medium);
            line-height: 1.6;
        }

        .footer-column a {
            color: var(--color-gray-medium);
            font-size: 13px;
        }

        .footer-column a:hover {
            color: var(--color-gray-dark);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid var(--color-gray-light);
            font-size: 13px;
            color: var(--color-gray-medium);
        }

        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            background-color: var(--color-gray-dark);
            color: var(--color-white);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: all 0.3s ease;
            z-index: 999;
        }

        .back-to-top:hover {
            background-color: var(--color-gray-steel);
            transform: translateY(-4px);
        }

        .back-to-top.visible {
            display: flex;
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            overflow: auto;
        }

        .modal-content {
            background-color: var(--color-white);
            margin: 5% auto;
            padding: 48px;
            border-radius: 8px;
            max-width: 800px;
            position: relative;
        }

        .modal-close {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 32px;
            font-weight: 300;
            color: var(--color-gray-medium);
            cursor: pointer;
            border: none;
            background: none;
        }

        .modal-close:hover {
            color: var(--color-gray-dark);
        }

        .modal-content h2 {
            margin-bottom: 24px;
        }

        .modal-content p {
            margin-bottom: 16px;
            color: var(--color-gray-steel);
            line-height: 1.7;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            h1 {
                font-size: 40px;
            }

            h2 {
                font-size: 32px;
            }

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

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 32px;
            }

            h2 {
                font-size: 28px;
            }

            h3 {
                font-size: 20px;
            }

            nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--color-white);
                flex-direction: column;
                padding: 24px;
                box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
                gap: 16px;
            }

            nav ul.active {
                display: flex;
            }

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

            .hero {
                margin-top: 70px;
                min-height: 70vh;
            }

            section {
                padding: 60px 20px;
            }

            .competences-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .about-section {
                flex-direction: column;
            }

            .about-image {
                width: 100%;
                max-width: 300px;
                margin: 0 auto;
            }

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

            .pricing-card {
                width: 100%;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .contact-form {
                padding: 24px;
            }

            .modal-content {
                margin: 10% 16px;
                padding: 32px 24px;
            }
        }