:root {
            --bg-body: #ffffff;
            --bg-surface: rgba(255, 255, 255, 0.7);
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --text-main: #0f172a;
            --text-body: #475569;
            --border: rgba(0, 0, 0, 0.06);
            --shadow-soft: 0 20px 40px -10px rgba(37, 99, 235, 0.1);
            --shadow-card: 0 10px 30px rgba(0,0,0,0.04);
            --gradient-hero: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }

        body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: #f8fafc;
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }


        .animated-bg {
            position: fixed; top: 0; left: 0; width: 100%; height: 100vh; z-index: -1;
            background: #ffffff;
            overflow: hidden;
        }
        .blob {
            position: absolute;
            filter: blur(80px);
            opacity: 0.6;
            animation: float 10s infinite ease-in-out;
        }
        .blob-1 { top: -10%; left: -10%; width: 500px; height: 500px; background: rgba(37, 99, 235, 0.15); animation-delay: 0s; }
        .blob-2 { bottom: -10%; right: -10%; width: 600px; height: 600px; background: rgba(124, 58, 237, 0.15); animation-delay: 2s; }
        .blob-3 { top: 40%; left: 40%; width: 400px; height: 400px; background: rgba(6, 182, 212, 0.1); animation-delay: 4s; }

        @keyframes float {
            0% { transform: translate(0, 0); }
            50% { transform: translate(30px, 50px); }
            100% { transform: translate(0, 0); }
        }


        h1, h2, h3, h4 { color: var(--text-main); line-height: 1.1; letter-spacing: -0.03em; }
        .container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }


        .navbar {
            position: fixed; top: 0; left: 0; width: 100%; padding: 20px 0; z-index: 1000;
            background: rgba(255, 255, 255, 0.8); backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }
        .nav-inner { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-weight: 800; font-size: 1.6rem; text-decoration: none; color: var(--text-main); }
        .logo span { color: var(--primary); }
        
        .nav-links { display: flex; gap: 32px; list-style: none; }
        .nav-links a { text-decoration: none; color: var(--text-body); font-weight: 600; transition: 0.3s; font-size: 0.95rem; }
        .nav-links a:hover { color: var(--primary); }

        .btn-nav {
            background: var(--text-main); color: #fff; padding: 12px 28px; border-radius: 100px;
            text-decoration: none; font-weight: 600; font-size: 0.9rem; transition: 0.3s;
            box-shadow: 0 5px 15px rgba(15, 23, 42, 0.2);
        }
        .btn-nav:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(15, 23, 42, 0.3); }
        .burger { display: none; cursor: pointer; font-size: 1.5rem; }


        .hero { padding: 180px 0 100px; text-align: center; max-width: 900px; margin: 0 auto; }
        
        .badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: white; color: var(--primary); padding: 8px 20px;
            border-radius: 100px; font-size: 0.85rem; font-weight: 700;
            margin-bottom: 30px; border: 1px solid var(--border);
            box-shadow: 0 4px 10px rgba(0,0,0,0.03);
        }
        .badge::before { content: ''; width: 8px; height: 8px; background: #22c55e; border-radius: 50%; }

        .hero h1 {
            font-size: 4.2rem; font-weight: 800; margin-bottom: 24px;
            background: linear-gradient(135deg, #0f172a 0%, #475569 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .hero p { font-size: 1.25rem; color: var(--text-body); margin-bottom: 40px; max-width: 650px; margin-inline: auto; }

        .hero-btns { display: flex; justify-content: center; gap: 16px; }
        
        .btn-primary {
            background: var(--gradient-hero); color: white; padding: 18px 36px;
            border-radius: 16px; text-decoration: none; font-weight: 600;
            box-shadow: var(--shadow-soft); transition: 0.3s; position: relative; overflow: hidden;
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 25px 50px -10px rgba(37, 99, 235, 0.3); }

        .btn-outline {
            background: white; color: var(--text-main); padding: 18px 36px;
            border-radius: 16px; text-decoration: none; font-weight: 600;
            border: 1px solid var(--border); transition: 0.3s;
        }
        .btn-outline:hover { background: #f8fafc; border-color: #cbd5e1; }

        .section { padding: 120px 0; position: relative; }
        .section-header { text-align: center; margin-bottom: 80px; max-width: 600px; margin-inline: auto; }
        .section-header h2 { font-size: 2.8rem; margin-bottom: 16px; }

        .grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }

        .feature-card {
            background: rgba(255,255,255,0.6); backdrop-filter: blur(10px);
            padding: 40px; border-radius: 24px; border: 1px solid white;
            box-shadow: var(--shadow-card); transition: 0.4s;
        }
        .feature-card:hover { transform: translateY(-10px); background: white; box-shadow: 0 20px 40px rgba(0,0,0,0.06); }

        .icon-box {
            width: 64px; height: 64px;
            background: white; border-radius: 16px;
            display: flex; align-items: center; justify-content: center;
            margin-bottom: 24px; box-shadow: 0 10px 20px rgba(0,0,0,0.03);
            border: 1px solid var(--border);
        }
        .icon-box svg { width: 32px; height: 32px; stroke: var(--primary); stroke-width: 2; }


        .tech-grid-display {
            display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; margin-top: 20px;
        }
        
        .tech-item {
            width: 130px; height: 130px;
            background: white;
            border-radius: 24px;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255,255,255,0.8);
            transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        
        .tech-item:hover { transform: translateY(-10px) scale(1.05); box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
        
        .tech-item img {
            height: 55px; width: auto;
            margin-bottom: 10px;
            object-fit: contain;
        }
        
        .tech-item span { font-size: 0.85rem; font-weight: 600; color: #94a3b8; }


        .project-card {
            background: white; border-radius: 24px; overflow: hidden;
            box-shadow: var(--shadow-card); transition: 0.4s; display: block; text-decoration: none;
            border: 1px solid var(--border);
        }
        .project-img-wrapper { overflow: hidden; height: 260px; }
        .project-img { width: 100%; height: 100%; object-fit: cover; transition: 0.6s; }
        .project-card:hover .project-img { transform: scale(1.1); }
        .project-card:hover { transform: translateY(-8px); box-shadow: 0 25px 50px rgba(0,0,0,0.08); }
        
        .project-content { padding: 30px; }
        .project-cat { color: var(--primary); font-weight: 700; font-size: 0.75rem; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; display: block; }
        .project-title { font-size: 1.3rem; font-weight: 700; color: var(--text-main); }
        
        .btn-center-wrapper { text-align: center; margin-top: 50px; }


        .steps-container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
        .step-item {
            background: white; padding: 30px; border-radius: 20px; border: 1px solid var(--border);
            box-shadow: var(--shadow-card); position: relative; overflow: hidden;
        }
        .step-num {
            font-size: 4rem; font-weight: 900; color: #f1f5f9;
            position: absolute; top: -10px; right: -10px; line-height: 1; z-index: 0;
        }
        .step-content { position: relative; z-index: 1; }
        .step-content h3 { font-size: 1.2rem; margin-bottom: 10px; }


        .cta-box {
            background: var(--gradient-hero); border-radius: 32px; padding: 80px 40px; text-align: center; color: white;
            box-shadow: 0 30px 60px -15px rgba(37, 99, 235, 0.4);
            position: relative; overflow: hidden;
        }
        .cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,...");
    pointer-events: none;   /* 🔥 LIGNE CRUCIALE */
    z-index: 0;
}

        .cta-title { font-size: 2.5rem; color: #ffffff; margin-bottom: 20px; }
        .cta-desc { font-size: 1.1rem; color: rgba(255,255,255,0.9); margin-bottom: 40px; max-width: 600px; margin-inline: auto; }
        .btn-white {
            background: white; color: var(--primary); padding: 16px 32px; border-radius: 100px;
            text-decoration: none; font-weight: 700; display: inline-block; transition: 0.3s;
        }
        .btn-white:hover { transform: scale(1.05); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }


        .footer-main { background: #ffffff; padding: 80px 0 30px; border-top: 1px solid var(--border); }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 60px; }
        .footer-logo { font-size: 1.4rem; font-weight: 800; color: var(--text-main); }
        .footer-tagline { color: var(--text-body); margin-top: 15px; font-size: 0.9rem; }
        .footer-col h4 { margin-bottom: 20px; }
        .footer-col ul { list-style: none; }
        .footer-col li { margin-bottom: 10px; }
        .footer-link { text-decoration: none; color: var(--text-body); transition: 0.3s; }
        .footer-link:hover { color: var(--primary); padding-left: 5px; }
        .footer-bottom { text-align: center; border-top: 1px solid var(--border); padding-top: 30px; color: #94a3b8; font-size: 0.85rem; }


        @media (max-width: 992px) {
            .steps-container { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .hero h1 { font-size: 2.8rem; }
            .btn-nav { display: none; }

            .burger { 
                display: block; 
                z-index: 2000; 
                position: relative;
                cursor: pointer;
                transition: 0.3s;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: 0;
                height: 100vh;
                width: 75%; 
                max-width: 320px;
                background: rgba(255, 255, 255, 0.95);
                backdrop-filter: blur(15px); 
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 40px;

                transform: translateX(100%);
                transition: transform 0.5s cubic-bezier(0.77, 0, 0.175, 1); 
                box-shadow: -10px 0 40px rgba(0,0,0,0.1);
                z-index: 1999;
                padding: 40px;
            }


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


            .nav-links li {
                opacity: 0;
                transform: translateX(50px);
                transition: 0.4s ease forwards;
            }
            .nav-links a { font-size: 1.2rem; } 


            .nav-links.active li { opacity: 1; transform: translateX(0); }
            .nav-links.active li:nth-child(1) { transition-delay: 0.1s; }
            .nav-links.active li:nth-child(2) { transition-delay: 0.2s; }
            .nav-links.active li:nth-child(3) { transition-delay: 0.3s; }
            .nav-links.active li:nth-child(4) { transition-delay: 0.4s; }

            .steps-container { grid-template-columns: 1fr; }
            .hero-btns { flex-direction: column; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
        }