/* Variables et reset */
        :root {
            --primary-color: #0056b3; /* Bleu professionnel */
            --secondary-color: #e9f2ff; /* Bleu très clair */
            --accent-color: #ff7a00; /* Orange pour les accents */
            --dark-color: #333;
            --light-color: #f8f9fa;
            --text-color: #444;
            --white: #fff;
            --shadow: 0 5px 15px 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: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--white);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        h1, h2, h3, h4 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        
        h1 {
            font-size: 2.8rem;
        }
        
        h2 {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 2.5rem;
            position: relative;
        }
        
        h2:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
        }
        
        h3 {
            font-size: 1.5rem;
        }
        
        p {
            margin-bottom: 1.2rem;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: var(--white);
            padding: 12px 28px;
            border-radius: 4px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }
        
        .btn:hover {
            background-color: #004094;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        
        .btn-accent {
            background-color: var(--accent-color);
        }
        
        .btn-accent:hover {
            background-color: #e06a00;
        }
        
        section {
            padding: 80px 0;
        }
        
        /* Header & Navigation */
        header {
            background-color: var(--white);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .logo span {
            color: var(--accent-color);
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            font-weight: 600;
            transition: var(--transition);
            position: relative;
        }
        
        nav ul li a:hover {
            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: var(--transition);
        }
        
        nav ul li a:hover:after {
            width: 100%;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--primary-color);
            cursor: pointer;
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80');
            background-size: cover;
            background-position: center;
            color: var(--white);
            text-align: center;
            padding: 180px 0 120px;
            margin-top: 80px;
        }
        
        .hero h1 {
            color: var(--white);
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
        }
        
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }
        
        /* Services Section */
        .services {
            background-color: var(--secondary-color);
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .service-card {
            background-color: var(--white);
            border-radius: 8px;
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
        }
        
        .service-card:hover {
            transform: translateY(-10px);
        }
        
        .service-icon {
            background-color: var(--secondary-color);
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        
        /* About Section */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .about-img {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .about-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        
        .about-img:hover img {
            transform: scale(1.05);
        }
        
        .about-stats {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
        }
        
        .stat {
            text-align: center;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            display: block;
        }
        
        .stat-text {
            font-weight: 600;
        }
        
        /* Contact Section */
        .contact {
            background-color: var(--secondary-color);
        }
        
        .contact-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }
        
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        
        .contact-icon {
            background-color: var(--primary-color);
            color: var(--white);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
        }
        
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        
        /* Footer */
        footer {
            background-color: var(--dark-color);
            color: var(--white);
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--white);
        }
        
        .footer-links h3, .footer-newsletter h3 {
            color: var(--white);
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        
        .footer-links ul {
            list-style: none;
        }
        
        .footer-links ul li {
            margin-bottom: 10px;
        }
        
        .footer-links ul li a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        
        .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%;
            transition: var(--transition);
        }
        
        .social-icons a:hover {
            background-color: var(--accent-color);
            transform: translateY(-5px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        
        /* Responsive Design */
        @media (max-width: 992px) {
            h1 {
                font-size: 2.4rem;
            }
            
            h2 {
                font-size: 2rem;
            }
            
            .about-content, .contact-container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .hero {
                padding: 150px 0 100px;
            }
            
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            nav {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--white);
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
            }
            
            nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            
            nav ul {
                flex-direction: column;
                padding: 20px;
            }
            
            nav ul li {
                margin: 10px 0;
            }
            
            .hero h1 {
                font-size: 2.4rem;
            }
            
            section {
                padding: 60px 0;
            }
        }
        
        @media (max-width: 576px) {
            .hero h1 {
                font-size: 2rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .btn {
                padding: 10px 20px;
            }
            
            .about-stats {
                flex-direction: column;
                gap: 20px;
            }
        }