/* --- VARIABLES & RESET --- */
        :root {
            --primary-color: #1a2b4c; /* Bleu foncé pro */
            --secondary-color: #f3b923; /* Jaune/Orange vif */
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #f9fbfd;
            --bg-white: #ffffff;
            --border-radius: 12px;
            --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            font-size: 20px;
        }

        html {
            scroll-behavior: smooth;
        }

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

        /* ==========================================================================
           ANIMATIONS D'ENTRÉE (SCROLL REVEAL EFFECT)
           ========================================================================== */
        
        /* État initial générique caché */
        .reveal-fade, .reveal-left, .reveal-right, .reveal-up {
            opacity: 0;
            will-change: transform, opacity;
            transition: opacity 0.9s cubic-bezier(0.25, 1, 0.5, 1), 
                        transform 0.9s cubic-bezier(0.25, 1, 0.5, 1);
        }

        /* Variantes de directions */
        .reveal-left { transform: translateX(-80px); }
        .reveal-right { transform: translateX(80px); }
        .reveal-up { transform: translateY(60px); }

        /* État actif déclenché par le JavaScript */
        .reveal-visible {
            opacity: 1 !important;
            transform: translate(0) !important;
        }

        /* Délais d'apparition cascades (Stagger) */
        .delay-1 { transition-delay: 0.15s; }
        .delay-2 { transition-delay: 0.3s; }
        .delay-3 { transition-delay: 0.45s; }
        .delay-4 { transition-delay: 0.6s; }

        /* ========================================================================== */

        /* --- BACKGROUND SHAPES --- */
        .bg-shape{
            position:absolute;
            border-radius:50%;
            filter:blur(80px);
            opacity:0.4;
            z-index:-1;
        }

        .shape1{
            width:400px;
            height:400px;
            background:#3b82f6;
            bottom:100px;
            left:-100px;
        }

        .shape2{
            width:300px;
            height:300px;
            background:#9333ea;
            bottom:100px;
            right:-80px;
        }

        /* --- HEADER & NAVIGATION --- */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 8%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            transition: padding 0.3s ease;
        }

        header.scrolled {
            padding: 12px 8%;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }

        .logo-container{
            display:flex;
            align-items:center;
            gap:12px;
        }

        .logo{
            height:100px;
            width:auto;
            object-fit:contain;
        }

        .brand h1{
            font-size:40px;
            margin:0;
            color:#f3b923;
            font-weight:800;
            line-height:1;
        }

        .brand span{
            font-size:25px;
            color:#6b7280;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        nav ul li a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            transition: var(--transition);
            position: relative;
        }

        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }

        nav ul li a:hover::after, nav ul li a.active-link::after {
            width: 100%;
        }

        nav ul li a:hover {
            color: var(--secondary-color);
        }

        .btn-nav {
            background-color: var(--secondary-color);
            color: #000;
            padding: 10px 25px;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 10px rgba(243, 185, 35, 0.2);
        }

        .btn-nav:hover {
            background-color: #db9f18;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(243, 185, 35, 0.4);
        }

        /* --- HERO SECTION --- */
        .hero {
            background-color: var(--primary-color);
            color: white;
            padding: 100px 8% 120px 8%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(243, 185, 35, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero-content {
            max-width: 55%;
            position: relative;
            z-index: 2;
        }

        .hero-content h1 {
            font-size: 45px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            color: var(--secondary-color);
            font-size: 39px;
        }

        .hero-content p {
            font-size: 20px;
            color: #ced4da;
            margin-bottom: 35px;
        }

        .hero-buttons {
            display: flex;
            gap: 20px;
        }

        .btn-primary {
            background-color: var(--secondary-color);
            color: #000;
            padding: 15px 35px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-primary:hover {
            background-color: #db9f18;
            transform: scale(1.03);
        }

        .btn-secondary {
            border: 2px solid #ffffff;
            color: white;
            padding: 15px 35px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background-color: white;
            color: var(--primary-color);
        }

        .hero-image {
            max-width: 40%;
            position: relative;
            z-index: 2;
        }

       /* --- NOUVEAU STYLE POUR L'IMAGE MULTI-ÉCRANS --- */
        .responsive-mockup-container {
            width: 100%;
            max-width: 550px; /* S'assure que l'image ne devienne pas trop géante */
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .mockup-img {
            width: 100%;
            height: auto;
            object-fit: contain;
            /* Ajoute un effet de profondeur léger sous les appareils */
            filter: drop-shadow(0px 20px 30px rgba(0, 0, 0, 0.25));
            transition: var(--transition);
        }

        /* Petit effet de lévitation discret au survol de la souris */
        .mockup-img:hover {
            transform: translateY(-5px);
            filter: drop-shadow(0px 25px 35px rgba(0, 0, 0, 0.35));
        }

        /* --- SECTION ABOUT (PROBLEMATIQUE) --- */
        .about-section {
            padding: 100px 8%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 50px;
            position: relative;
        }

        .about-left {
            max-width: 50%;
        }

        .section-tag {
            color: var(--secondary-color);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: block;
            font-size: 20px;
        }

        .about-left h2 {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .problem-list li {
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-dark);
        }

        .problem-list li i {
            color: #d9534f;
            margin-top: 5px;
        }

        .about-right-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 45%;
        }

        .grid-img-card {
            background-color: var(--bg-white);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            text-align: center;
            border: 1px solid #eef2f7;
            transition: var(--transition);
        }

        .grid-img-card:hover {
            transform: scale(1.05);
            border-color: var(--secondary-color);
        }

        .grid-img-card i {
            font-size: 40px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        /* --- SECTION SERVICES / FONCTIONNALITES --- */
        .services-section {
            background-color: var(--bg-light);
            padding: 100px 8%;
            text-align: center;
        }

        .services-grid {
            display: flex;
            gap: 30px;
            transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
        }

        .service-card {
            background-color: var(--bg-white);
            min-width: calc(33.333% - 20px);
            padding: 40px 30px;
            border-radius: var(--border-radius);
            text-align: left;
            box-shadow: 0 10px 30px rgba(0,0,0,0.04);
            border-bottom: 4px solid transparent;
            transition: var(--transition);
            border-color: #1a2b4c;
        }

        .service-card:hover {
            transform: translateY(-10px);
            border-bottom: 4px solid var(--secondary-color);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(26, 43, 76, 0.05);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }

        .service-icon i {
            font-size: 24px;
            color: var(--primary-color);
        }

        .slider-controls {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 40px;
        }

        .control-btn {
            background-color: #e2e8f0;
            border: none;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .control-btn:hover {
            background-color: var(--secondary-color);
        }

        /* --- SECTION ATOUTS --- */
        .atouts-section {
            padding: 100px 8%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .atouts-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 50%;
        }

        .atout-card {
            background-color: #f3b94d;
            border: 1px solid #eef2f7;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 20px rgba(0,0,0,0.02);
        }

        .counter-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

        /* --- SECTION BESOINS --- */
        .news-section {
            background-color: var(--bg-light);
            padding: 100px 8%;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }

        .news-card {
            background-color: var(--bg-white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.04);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-5px);
        }

        .news-card-img-placeholder {
            height: 150px;
            background: linear-gradient(45deg, #1a2b4c, #3a538c);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 35px;
        }

        .news-body {
            padding: 25px;
        }

        /* --- CONTACT INTERACTIF --- */
        .contact-trigger-zone {
            padding: 60px 8%;
            text-align: center;
            background: linear-gradient(rgba(26,43,76,0.02), rgba(26,43,76,0.05));
        }

        .btn-submit-demo {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 15px 40px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit-demo:hover {
            background-color: var(--secondary-color);
            color: black;
        }

        /* --- FOOTER --- */
        footer {
            background-color: #0f1a2e;
            color: #ffffff;
            padding: 80px 8% 30px 8%;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 50px;
            margin-bottom: 60px;
        }

        .footer-about h3 span { color: var(--secondary-color); }
        .footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
        .footer-links ul li a { color: #a0aec0; text-decoration: none; transition: var(--transition); }
        .footer-links ul li a:hover { color: var(--secondary-color); padding-left: 5px; }
        
        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 15px;
            color: #a0aec0;
        }
        .footer-contact-item i { color: var(--secondary-color); margin-top: 5px; }

        .social-icons { display: flex; gap: 15px; }
        .social-icons a { width: 40px; height: 40px; background-color: rgba(255,255,255,0.05); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; text-decoration: none; }
        .social-icons a:hover { background-color: var(--secondary-color); color: #000; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 30px; text-align: center; color: #718096; }

        @media (max-width: 992px) {
            .hero, .about-section, .atouts-section { flex-direction: column; text-align: center; gap: 40px; }
            .hero-content, .hero-image, .about-left, .about-right-grid, .atouts-left, .atouts-grid { max-width: 100%; }
            .hero-buttons { justify-content: center; }
            .service-card { min-width: calc(50% - 15px); }
            .news-grid, .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            header { flex-direction: column; gap: 15px; }
            nav ul { flex-wrap: wrap; justify-content: center; }
            .service-card { min-width: 100%; }
            .news-grid, .footer-grid { grid-template-columns: 1fr; }
        }