:root {
            /* Couleurs basées sur le logo */
            --color-orange: #FF9900; /* Couleur "United" */
            --color-cyan: #00B4D8;   /* Couleur "Service/Technologies" */
            --color-dark: #1A1A1A;
            --color-gray: #F4F6F8;
            --color-text: #333333;
            --color-text-light: #666666;
            --color-white: #FFFFFF;
            
            --font-heading: 'Poppins', sans-serif;
            --font-body: 'Inter', sans-serif;
            
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            color: var(--color-text);
            line-height: 1.6;
            background-color: var(--color-white);
            overflow-x: hidden;
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        /* --- TYPOGRAPHY --- */
        h1, h2, h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--color-dark);
        }

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
            padding-bottom: 1rem;
        }

        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--color-orange), var(--color-cyan));
            border-radius: 2px;
        }

        .highlight-orange { color: var(--color-orange); }
        .highlight-cyan { color: var(--color-cyan); }

        /* --- HEADER & NAV --- */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .logo {
            display: flex;
            align-items: center;
        }

        .logo img {
            height: 50px; /* Ajuster selon le ratio réel */
            width: auto;
            object-fit: contain;
        }
        
        /* Fallback si l'image ne charge pas */
        .logo-text-fallback {
            display: none;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.2rem;
        }
        .logo-text-fallback span:first-child { color: var(--color-orange); }
        .logo-text-fallback span:nth-child(2) { color: var(--color-dark); }
        .logo-text-fallback span:last-child { color: var(--color-cyan); display: block; font-size: 0.8rem; letter-spacing: 2px; }

        .nav-links {
            display: flex;
            gap: 2rem;
        }

        .nav-links a {
            font-weight: 500;
            position: relative;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--color-cyan);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: var(--color-orange);
            transition: var(--transition);
        }

        .nav-links a:hover::after {
            width: 100%;
        }
        /* Active Link Style */
        .nav-links a.active-link {
            color: var(--color-cyan);
        }

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

        .btn-cta {
            padding: 0.8rem 1.5rem;
            background: linear-gradient(135deg, var(--color-orange), #FFB74D);
            color: white;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 153, 0, 0.3);
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 153, 0, 0.4);
        }

        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--color-dark);
        }

        /* --- HERO SECTION --- */
        #hero {
            padding-top: 140px;
            padding-bottom: 100px;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        /* Formes géométriques abstraites en fond */
        .shape {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            z-index: 0;
            opacity: 0.1;
        }
        .shape-1 { width: 400px; height: 400px; background: var(--color-orange); top: -100px; right: -100px; }
        .shape-2 { width: 300px; height: 300px; background: var(--color-cyan); bottom: 50px; left: -50px; }

        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 3.5rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }

        .hero-text p {
            font-size: 1.2rem;
            color: var(--color-text-light);
            margin-bottom: 2.5rem;
            max-width: 500px;
        }

        .hero-image {
            position: relative;
            text-align: center;
            overflow: hidden; /* Pour l'effet border-radius */
            border-radius: 20px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.15); /* Ombre sur le conteneur */
        }
        
        .hero-image img {
            width: 100%;
            height: auto;
            display: block;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-15px); }
            100% { transform: translateY(0px); }
        }

        /* --- À PROPOS --- */
        #about {
            padding: 100px 0;
            background-color: var(--color-white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-img {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        
        .about-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }

        .about-img:hover img {
            transform: scale(1.05);
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            color: var(--color-dark);
        }

        .about-text p {
            margin-bottom: 1.5rem;
            color: var(--color-text-light);
        }

        .stats-row {
            display: flex;
            gap: 2rem;
            margin-top: 2rem;
        }

        .stat-item h4 {
            font-size: 2rem;
            color: var(--color-cyan);
            margin-bottom: 0.2rem;
        }

        .stat-item span {
            font-size: 0.9rem;
            color: var(--color-text-light);
            font-weight: 600;
        }

        /* --- SERVICES --- */
        #services {
            padding: 100px 0;
            background-color: var(--color-gray);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .service-card {
            background: var(--color-white);
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            border-bottom: 3px solid transparent;
        }

        .service-card:hover {
            transform: translateY(-10px);
            border-bottom: 3px solid var(--color-orange);
        }

        .icon-box {
            width: 70px;
            height: 70px;
            background: rgba(0, 180, 216, 0.1); /* Cyan transparent */
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
            color: var(--color-cyan);
            transition: var(--transition);
        }

        .service-card:hover .icon-box {
            background: var(--color-orange);
            color: white;
        }

        .service-card h3 {
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
        }

        /* --- CONTACT --- */
        #contact {
            padding: 100px 0;
            background-color: var(--color-white);
        }

        .contact-container {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 3rem;
            background: var(--color-white);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .contact-info {
            background: var(--color-dark);
            color: white;
            padding: 3rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .contact-info h3 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 2rem;
        }

        .info-item i {
            color: var(--color-orange);
            font-size: 1.2rem;
            margin-right: 1rem;
            margin-top: 5px;
        }

        .info-item h4 {
            font-size: 1.1rem;
            margin-bottom: 0.3rem;
        }

        .info-item p {
            color: #AAAAAA;
            font-size: 0.9rem;
        }

        .contact-form {
            padding: 3rem;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: var(--font-body);
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--color-cyan);
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
        }

        .submit-btn {
            width: 100%;
            padding: 1rem;
            background: var(--color-dark);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
        }

        .submit-btn:hover {
            background: var(--color-cyan);
        }

        /* --- FOOTER --- */
        footer {
            background-color: #111;
            color: #ccc;
            padding: 60px 0 20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-col h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }

        .footer-col ul li {
            margin-bottom: 0.8rem;
        }

        .footer-col ul li a {
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--color-orange);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
        }

        /* --- ANIMATIONS & UTILS --- */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Toast Notification */
        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: white;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.2);
            border-left: 5px solid var(--color-cyan);
            display: flex;
            align-items: center;
            gap: 15px;
            transform: translateX(150%);
            transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
            z-index: 2000;
        }

        .toast.show {
            transform: translateX(0);
        }

        .toast i {
            color: #4CAF50;
            font-size: 1.2rem;
        }

        /* --- RESPONSIVE --- */
        @media (max-width: 992px) {
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-text p { margin: 0 auto 2.5rem; }
            .about-grid { grid-template-columns: 1fr; }
            .contact-container { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 2rem;
                box-shadow: 0 10px 10px rgba(0,0,0,0.05);
                transform: translateY(-150%);
                transition: var(--transition);
                z-index: 999;
            }

            .nav-links.active {
                transform: translateY(0);
            }

            .mobile-menu-btn { display: block; }
            
            .hero-text h1 { font-size: 2.5rem; }
            .section-title h2 { font-size: 2rem; }
        }