        /*
         * VARIABLES RACINE : 
         * Ces variables définissent les couleurs principales, les arrière-plans, les ombres et les espacements.
         * Elles sont utilisées partout dans le CSS pour garder le design cohérent et facile à modifier.
         * Pour un débutant : Changez une variable ici, et tout le site se met à jour automatiquement !
         */
        :root {
            --primary: #ff6200;         /* Couleur principale (orange vif) */
            --primary-dark: #e55a00;    /* Variante plus foncée pour les hovers */
            --primary-light: #ff8c42;   /* Variante plus claire */
            --secondary: #ff4500;       /* Couleur secondaire (orange rougeâtre) */
            --accent: #ffa500;          /* Accent pour les éléments importants */
            --success: #10b981;         /* Vert pour les succès */
            --warning: #f59e0b;         /* Jaune pour les avertissements */
            --danger: #ef4444;          /* Rouge pour les erreurs */

            --bg-main: #ffffff;         /* Arrière-plan principal (blanc en mode clair) */
            --bg-alt: #fff8f5;          /* Arrière-plan alternatif (léger orange pâle) */
            --bg-subtle: #fff0e6;       /* Arrière-plan subtil */
            --text-primary: #0f172a;    /* Texte principal (noir foncé) */
            --text-secondary: #475569;  /* Texte secondaire (gris) */
            --text-tertiary: #94a3b8;   /* Texte tertiaire (gris clair) */
            --border: #ffe4d1;          /* Bordures (orange clair) */
            --shadow-sm: 0 1px 2px 0 rgba(255, 98, 0, 0.05);  /* Ombre légère */
            --shadow-md: 0 4px 6px -1px rgba(255, 98, 0, 0.1); /* Ombre moyenne */
            --shadow-lg: 0 10px 15px -3px rgba(255, 98, 0, 0.1); /* Ombre large */
            --shadow-xl: 0 20px 25px -5px rgba(255, 98, 0, 0.1); /* Ombre extra large */
            --shadow-2xl: 0 25px 50px -12px rgba(255, 98, 0, 0.25); /* Ombre très large */

            --radius-sm: 8px;           /* Rayon de bordure petit */
            --radius-md: 12px;          /* Rayon moyen */
            --radius-lg: 16px;          /* Rayon large */
            --radius-xl: 24px;          /* Rayon extra large */

            --spacing-xs: 8px;          /* Espacement extra petit */
            --spacing-sm: 16px;         /* Petit */
            --spacing-md: 24px;         /* Moyen */
            --spacing-lg: 32px;         /* Large */
            --spacing-xl: 48px;         /* Extra large */
            --spacing-2xl: 64px;        /* Très large */
            --spacing-3xl: 96px;        /* Encore plus large */
        }

        /*
         * MODE SOMBRE : 
         * Redéfinit les variables pour le thème sombre.
         * Appliqué quand l'attribut data-theme="dark" est sur l'élément <html>.
         * Pour un débutant : Cela permet de switcher entre clair et sombre sans changer tout le code.
         */
        [data-theme="dark"] {
            --bg-main: #0f172a;         /* Arrière-plan principal sombre */
            --bg-alt: #1e293b;          /* Alternatif sombre */
            --bg-subtle: #334155;       /* Subtil sombre */
            --text-primary: #f1f5f9;    /* Texte clair */
            --text-secondary: #cbd5e1;  /* Texte secondaire clair */
            --text-tertiary: #64748b;   /* Texte tertiaire clair */
            --border: #334155;          /* Bordures sombres */
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);  /* Ombres adaptées au sombre */
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
        }

        /*
         * RÉINITIALISATION GLOBALE : 
         * Enlève les marges et paddings par défaut de tous les éléments.
         * Utilise border-box pour que les largeurs incluent les bordures et paddings.
         * Pour un débutant : Cela évite les surprises avec les tailles des éléments.
         */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        /*
         * HTML ET BODY : 
         * Active le défilement doux pour les ancres.
         * Définit la police, l'arrière-plan et la couleur du texte avec des variables.
         * Ajoute une transition pour changer de thème sans à-coups.
         */
        html {
            scroll-behavior: smooth;
            font-size: 16px;  /* Taille de base pour les rem/em */
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;  /* Empêche le défilement horizontal */
            transition: background 0.3s ease, color 0.3s ease;
            -webkit-font-smoothing: antialiased;  /* Améliore le rendu des polices sur WebKit */
            -moz-osx-font-smoothing: grayscale;   /* Améliore sur Firefox macOS */
        }

        /*
         * CONTAINER : 
         * Limite la largeur max du contenu et ajoute un padding responsive.
         * Pour un débutant : Cela centre le contenu et l'adapte aux écrans.
         */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 clamp(20px, 5vw, 40px);  /* Padding adaptatif */
        }

        /*
         * SECTIONS : 
         * Styles de base pour les sections avec animation d'apparition au scroll.
         * La classe .visible active l'animation quand la section entre en vue.
         */
        section {
            padding: var(--spacing-3xl) 0;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /*
         * TITRES ET PARAGRAPHES : 
         * Styles pour les headings (h1-h6) et paragraphes.
         * Utilise clamp() pour des tailles responsives (adaptées à l'écran).
         */
        h1, h2, h3, h4, h5, h6 {
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }
        h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
        h2 { font-size: clamp(2rem, 5vw, 3rem); }
        h3 { font-size: clamp(1.5rem, 4vw, 2rem); }
        p {
            line-height: 1.75;
            color: var(--text-secondary);
        }
        a {
            text-decoration: none;
            color: inherit;
        }

        /*
         * HEADER : 
         * Barre de navigation fixe en haut de la page avec effet de flou (backdrop-filter).
         * Ajoute une bordure et une ombre quand on scroll (classe .scrolled).
         * z-index élevé pour être toujours au-dessus du contenu.
         * Amélioration : Rendu plus moderne avec saturation pour un effet verre dépoli.
         */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid var(--border);
            z-index: 1001;
            transition: all 0.3s ease;
        }
        [data-theme="dark"] header {
            background: rgba(15, 23, 42, 0.95);
        }
        header.scrolled {
            box-shadow: var(--shadow-md);
        }

        /*
         * HEADER-CONTAINER : 
         * Conteneur flex pour aligner logo, nav et actions.
         * Padding ajusté pour un bon espacement.
         */
        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 40px;
            max-width: 1440px;
            margin: 0 auto;
            position: relative;
        }

        /*
         * LOGO-WRAPPER : 
         * Conteneur pour le logo SVG et le texte.
         * Ajoute un hover avec animation pour plus d'interactivité.
         */
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: transform 0.3s ease;
            position: relative;
        }
        .logo-wrapper:hover {
            transform: translateY(-2px);
        }
        .logo-svg {
            width: 40px;
            height: 40px;
            transition: all 0.3s ease;
        }
        .logo-svg circle {
            fill: var(--primary);
            transition: fill 0.3s ease;
        }
        .logo-svg text {
            fill: white;
            font-weight: 900;
            font-size: 32px;
        }
        .logo-svg:hover circle {
            fill: var(--primary-dark);
            animation: pulse 1s ease-in-out infinite;
        }
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }
        .logo-text {
            font-size: 24px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /*
         * HEADER-ACTIONS : 
         * Groupe les boutons (thème, langue, menu hamburger).
         * Amélioration : Espacement constant, et les boutons restent visibles sur mobile pour "rester constante".
         */
        .header-actions {
            display: flex;
            gap: 12px;
            align-items: center;
            position: relative;
        }
        .icon-btn {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 18px;
            position: relative;
        }
        .icon-btn:hover {
            transform: scale(1.1);
            border-color: var(--primary);
            background: var(--primary);
        }

        /*
         * MENU-TOGGLE (HAMBURGER) : 
         * Bouton hamburger pour ouvrir le menu off-canvas sur mobile/tablette.
         * Amélioration : Style plus moderne avec bordure arrondie, animation fluide des barres.
         * Ajout d'une ombre légère pour le faire ressortir.
         */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1002;
            background: var(--primary);
            border-radius: 8px;
            border: 2px solid var(--primary-dark);
            position: relative;
            box-shadow: var(--shadow-sm);  /* Amélioration : Ombre pour profondeur */
        }
        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: white;
            border-radius: 3px;
            transition: all 0.3s ease;
            display: block;
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(7px, 7px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }
        .menu-toggle:hover {
            background: var(--primary-dark);  /* Amélioration : Hover pour feedback */
            transform: scale(1.05);
        }

        /* ==================== OFF-CANVAS MENU ==================== */
        /*
         * OFF-CANVAS MENU : 
         * Menu latéral fixe qui slide depuis la gauche.
         * #page-container se déplace pour révéler le menu.
         * Pour un débutant : C'est comme un tiroir qui s'ouvre.
         */
        #page-container {
            position: relative;
            z-index: 1;
            background: var(--bg-main);
            transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100%;
            background: var(--bg-alt);
            z-index: 0;
            display: flex;
            flex-direction: column;
            padding: 60px 30px;
            gap: 15px;
            overflow-y: auto;
        }
        body.menu-open #page-container {
            transform: translateX(280px);
            box-shadow: 0 0 20px rgba(0,0,0,0.2);
        }
        body.menu-open {
            overflow: hidden;
        }
        /* Styles des liens dans le menu */
        nav a {
            display: block;
            padding: 18px 24px;
            text-align: center;
            font-size: 18px;
            font-weight: 600;
            border-radius: 12px;
            background: var(--bg-main);
            border: 2px solid var(--border);
            margin: 0;
            color: var(--text-primary);
            transition: all 0.3s ease;
        }
        nav a:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }
        .nav-cta {
            background: var(--primary) !important;
            color: white !important;
            border: none !important;
            margin-top: 8px;
        }

        /*
         * MEDIA QUERIES POUR RESPONSIVE : 
         * Adaptations pour différents tailles d'écrans.
         * Amélioration : Sur mobile, les boutons thème et langue restent visibles (plus de display:none).
         * Hamburger s'affiche sur mobile et tablette.
         * Ajustements pour espacement réduit sur petits écrans.
         */
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex !important;
            }
            /* Amélioration : Les boutons icon-btn (thème et langue) restent visibles sur mobile pour "rester constante" */
            .header-actions .icon-btn {
                display: flex !important;
            }
            .header-actions {
                gap: 8px;  /* Réduction d'espacement pour fit sur mobile */
            }
            .icon-btn {
                width: 36px;  /* Plus petit sur mobile */
                height: 36px;
                font-size: 16px;
            }
            .header-container {
                padding: 14px 20px;
            }
            .logo-svg {
                width: 36px;
                height: 36px;
            }
            .logo-text {
                font-size: 20px;
            }
            nav {
                padding: 80px 24px 32px;
                gap: 16px;
            }
        }
        @media (max-width: 1024px) and (min-width: 769px) {
            .menu-toggle {
                display: flex !important;
            }
        }
        .mobile-detected .menu-toggle {
            display: flex !important;
        }
        /* Note : Si mobile détecté via JS, on force l'affichage du hamburger */

        /*
         * HERO SECTION : 
         * Section d'accueil avec grille responsive et animations.
         * Fond avec gradient radial animé pour dynamisme.
         */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: var(--bg-main);
            position: relative;
            overflow: hidden;
            opacity: 1 !important;
            transform: translateY(0) !important;
        }
        .hero::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 98, 0, 0.1), transparent);
            top: -200px;
            right: -100px;
            border-radius: 50%;
            animation: float 20s ease-in-out infinite;
        }
        @keyframes float {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            33% { transform: translate(30px, -50px) rotate(120deg); }
            66% { transform: translate(-20px, 20px) rotate(240deg); }
        }
        .hero-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content {
            animation: fadeInUp 0.8s ease-out;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: linear-gradient(135deg, rgba(255, 98, 0, 0.1), rgba(255, 69, 0, 0.1));
            border: 1px solid rgba(255, 98, 0, 0.2);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 24px;
            animation: fadeInUp 0.8s ease-out 0.2s both;
        }
        .hero h1 {
            margin-bottom: 24px;
            animation: fadeInUp 0.8s ease-out 0.3s both;
        }
        .hero-desc {
            font-size: 20px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 540px;
            animation: fadeInUp 0.8s ease-out 0.4s both;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease-out 0.5s both;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 16px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: var(--shadow-lg);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-xl);
        }
        .btn-secondary {
            background: var(--bg-alt);
            color: var(--text-primary);
            border: 1px solid var(--border);
        }
        .btn-secondary:hover {
            background: var(--bg-subtle);
            transform: translateY(-2px);
        }
        .hero-image {
            position: relative;
            animation: fadeInRight 0.8s ease-out 0.6s both;
        }
        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translateX(30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }
        .hero-phone {
            width: 100%;
            max-width: 400px;
            margin: 0 auto;
            position: relative;
            animation: floatPhone 6s ease-in-out infinite;
        }
        @keyframes floatPhone {
            0%, 100% { transform: translateY(0) rotate(-5deg); }
            50% { transform: translateY(-20px) rotate(5deg); }
        }
        .phone-mockup {
            position: relative;
            width: 100%;
            aspect-ratio: 9 / 19;
            background: linear-gradient(145deg, #1e293b, #0f172a);
            border-radius: 40px;
            padding: 12px;
            box-shadow: var(--shadow-2xl);
            border: 3px solid rgba(255, 98, 0, 0.3);
            transition: all 0.5s ease;  /* Amélioration : Transition fluide pour le mockup */
        }
        .phone-screen {
            width: 100%;
            height: 100%;
            background: white;
            border-radius: 32px;
            overflow: hidden;
            position: relative;
            transition: opacity 0.3s ease;  /* Amélioration : Pour fluidité lors des changements */
        }
        .phone-notch {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 28px;
            background: #0f172a;
            border-bottom-left-radius: 20px;
            border-bottom-right-radius: 20px;
            z-index: 10;
        }
        .status-bar {
            display: flex;
            justify-content: space-between;
            padding: 12px 20px;
            font-size: 12px;
            font-weight: 600;
            color: #0f172a;
            transition: all 0.3s ease;  /* Amélioration : Fluidité */
        }
        .phone-content {
            padding: 20px;
            height: calc(100% - 50px);
            overflow-y: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) #f1f5f9;
            transition: opacity 0.5s ease-in-out;  /* Amélioration : Transition fluide pour le contenu */
        }
        .phone-content.fade {
            opacity: 0;  /* Classe pour fade out/in */
        }
        .phone-content::-webkit-scrollbar {
            width: 4px;
        }
        .phone-content::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 4px;
        }
        .content-card-phone {
            background: linear-gradient(135deg, rgba(255, 98, 0, 0.05), rgba(255, 69, 0, 0.05));
            padding: 20px;
            border-radius: 16px;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 98, 0, 0.1);
            animation: slideInUp 0.5s ease-out;
            transition: transform 0.3s ease;  /* Amélioration : Hover fluide */
        }
        .content-card-phone:hover {
            transform: scale(1.02);  /* Amélioration : Interaction */
        }
        @keyframes slideInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .card-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card-value {
            font-size: 28px;
            font-weight: 900;
            color: #0f172a;
            margin-bottom: 4px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .card-subtitle {
            font-size: 12px;
            color: var(--success);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 16px;
        }
        .stat-item {
            background: white;
            padding: 16px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(255, 98, 0, 0.1);
            transition: all 0.3s ease;
        }
        .stat-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .stat-label {
            font-size: 11px;
            color: var(--text-tertiary);
            font-weight: 600;
            margin-bottom: 4px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .stat-value {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
        }
        .phone-nav {
            position: absolute;
            bottom: 12px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 24px;
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(10px);
            padding: 8px 20px;
            border-radius: 24px;
            z-index: 5;
            box-shadow: var(--shadow-lg);
            transition: all 0.3s ease;  /* Amélioration : Fluidité */
        }
        .nav-dot {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
        }
        .nav-dot.active {
            background: var(--primary);
        }
        .nav-dot svg {
            width: 18px;
            height: 18px;
            fill: #64748b;
            transition: fill 0.3s ease;
        }
        .nav-dot.active svg {
            fill: white;
        }
        .nav-dot:hover:not(.active) {
            background: rgba(255, 98, 0, 0.1);
        }
        .product-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: white;
            padding: 12px;
            border-radius: 12px;
            margin-bottom: 12px;
            border: 1px solid rgba(255, 98, 0, 0.1);
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease;  /* Amélioration : Hover fluide */
        }
        .product-item:hover {
            transform: scale(1.02);
        }
        .product-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, rgba(255, 98, 0, 0.1), rgba(255, 69, 0, 0.1));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .product-info {
            flex: 1;
        }
        .product-name {
            font-size: 13px;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 2px;
        }
        .product-stock {
            font-size: 11px;
            color: var(--text-tertiary);
        }
        .stock-badge {
            padding: 4px 8px;
            border-radius: 6px;
            font-size: 10px;
            font-weight: 700;
            text-transform: uppercase;
        }
        .stock-ok {
            background: rgba(16, 185, 129, 0.1);
            color: var(--success);
        }
        .stock-low {
            background: rgba(245, 158, 11, 0.1);
            color: var(--warning);
        }
        .stock-out {
            background: rgba(239, 68, 68, 0.1);
            color: var(--danger);
        }
        .chart-container {
            background: white;
            padding: 16px;
            border-radius: 12px;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 98, 0, 0.1);
        }
        .chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 8px;
            height: 120px;
            margin-top: 12px;
        }
        .chart-bar {
            flex: 1;
            background: linear-gradient(to top, var(--primary), var(--primary-light));
            border-radius: 6px 6px 0 0;
            position: relative;
            transition: all 0.3s ease;
            animation: barGrow 0.8s ease-out backwards;
        }
        @keyframes barGrow {
            from {
                height: 0;
                opacity: 0;
            }
            to {
                height: 100%;
                opacity: 1;
            }
        }
        .chart-bar:hover {
            opacity: 0.8;
            transform: translateY(-4px);
        }
        .chart-labels {
            display: flex;
            justify-content: space-between;
            margin-top: 8px;
            font-size: 10px;
            color: var(--text-tertiary);
            font-weight: 600;
        }
        .alert-badge {
            background: rgba(239, 68, 68, 0.1);
            border-left: 4px solid var(--danger);
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 16px;
            transition: all 0.3s ease;  /* Amélioration : Fluidité */
        }
        .alert-text {
            font-size: 12px;
            color: var(--danger);
            font-weight: 600;
        }
        .success-badge {
            background: rgba(16, 185, 129, 0.1);
            border-left: 4px solid var(--success);
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;  /* Amélioration : Fluidité */
        }
        .success-text {
            font-size: 12px;
            color: var(--success);
            font-weight: 600;
        }

        /*
         * AUTRES SECTIONS : 
         * Styles pour les sections alternatives, headers de section, promesses, features, etc.
         * Utilise des grids pour des layouts responsives.
         */
        .section-alt {
            background: var(--bg-alt);
        }
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto var(--spacing-2xl);
        }
        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: linear-gradient(135deg, rgba(255, 98, 0, 0.1), rgba(255, 69, 0, 0.1));
            border: 1px solid rgba(255, 98, 0, 0.2);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .section-title {
            margin-bottom: 20px;
        }
        .section-desc {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .promise-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: var(--spacing-2xl);
        }
        .promise-card {
            background: var(--bg-main);
            padding: 40px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .promise-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }
        .promise-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
            border-color: var(--primary);
        }
        .promise-card:hover::before {
            transform: scaleX(1);
        }
        .promise-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, rgba(255, 98, 0, 0.1), rgba(255, 69, 0, 0.1));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            margin-bottom: 24px;
        }
        .promise-card h3 {
            font-size: 24px;
            margin-bottom: 12px;
        }
        .promise-card p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
        }
        .promise-placeholder {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .placeholder-line {
            height: 10px;
            background: linear-gradient(90deg, var(--bg-subtle) 0%, var(--bg-alt) 50%, var(--bg-subtle) 100%);
            background-size: 200% 100%;
            animation: shimmer 1.5s ease-in-out infinite;
            border-radius: 4px;
            margin-bottom: 8px;
        }
        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }
        .placeholder-line:last-child {
            width: 60%;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: var(--spacing-2xl);
        }
        .feature-card {
            background: var(--bg-main);
            padding: 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
            display: block;
            animation: bounce 2s ease-in-out infinite;
        }
        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        .feature-card h4 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 15px;
            line-height: 1.7;
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: var(--spacing-2xl);
        }
        .testimonial-card {
            background: var(--bg-main);
            padding: 32px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
            position: relative;
            transition: all 0.3s ease;
        }
        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 20px;
            left: 20px;
            font-size: 80px;
            font-family: Georgia, serif;
            color: var(--primary);
            opacity: 0.1;
            line-height: 1;
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .testimonial-avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }
        .testimonial-info h4 {
            font-size: 18px;
            margin-bottom: 4px;
        }
        .testimonial-info p {
            font-size: 14px;
            color: var(--text-tertiary);
        }
        .testimonial-text {
            font-size: 15px;
            line-height: 1.75;
            font-style: italic;
            color: var(--text-secondary);
            position: relative;
            z-index: 1;
            margin-bottom: 16px;
        }
        .testimonial-rating {
            color: #f59e0b;
            font-size: 18px;
        }
        .beta-section {
            background: var(--bg-main);
        }
        .beta-container {
            max-width: 720px;
            margin: 0 auto;
            background: var(--bg-alt);
            padding: var(--spacing-2xl);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
        }
        .form-group {
            margin-bottom: 24px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            font-family: 'Inter', sans-serif;
            background: var(--bg-main);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            transition: all 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 98, 0, 0.1);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-submit {
            margin-top: 32px;
        }
        .form-success {
            display: none;
            padding: 20px;
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid var(--success);
            border-radius: var(--radius-md);
            color: var(--success);
            font-weight: 600;
            text-align: center;
        }
        .form-success.show {
            display: block;
        }
        footer {
            background: var(--bg-alt);
            padding: var(--spacing-2xl) 0;
            border-top: 1px solid var(--border);
            text-align: center;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-bottom: 24px;
        }
        .social-icons {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-top: 24px;
        }
        .social-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-main);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            background: var(--primary);
            border-color: var(--primary);
            transform: translateY(-4px);
        }
        .social-icon svg {
            width: 20px;
            height: 20px;
            fill: var(--text-secondary);
            transition: fill 0.3s ease;
        }
        .social-icon:hover svg {
            fill: white;
        }
        .whatsapp-float {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #25D366, #128C7E);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-xl);
            cursor: pointer;
            z-index: 999;
            transition: all 0.3s ease;
            animation: floatWA 3s ease-in-out infinite;
        }
        @keyframes floatWA {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        .whatsapp-float:hover {
            transform: scale(1.1);
            box-shadow: 0 20px 40px rgba(37, 211, 102, 0.4);
        }
        .whatsapp-float svg {
            width: 32px;
            height: 32px;
            fill: white;
        }

        /*
         * MEDIA QUERIES RESPONSIVE SUPPLÉMENTAIRES : 
         * Ajustements pour tablettes et mobiles.
         * Réduit les tailles et paddings pour un meilleur fit.
         */
        @media (max-width: 1024px) {
            .hero-container {
                grid-template-columns: 1fr;
                gap: 48px;
                text-align: center;
            }
            .hero-desc {
                margin: 0 auto 32px;
            }
            .hero-cta {
                justify-content: center;
            }
            .promise-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            html {
                font-size: 16px;
            }
            .container {
                padding: 0 20px;
            }
            section {
                padding: 60px 0;
            }
            .hero {
                min-height: auto;
                padding: 100px 20px 60px;
            }
            .hero-container {
                gap: 40px;
            }
            h1 {
                font-size: 2.2rem !important;
                line-height: 1.1;
            }
            .hero-desc {
                font-size: 17px;
                margin-bottom: 28px;
            }
            .hero-cta {
                flex-direction: column;
                gap: 12px;
            }
            .btn {
                width: 100%;
                padding: 16px 24px;
                font-size: 16px;
            }
            .hero-phone {
                max-width: 280px;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .section-title {
                font-size: 1.8rem !important;
            }
            .section-desc {
                font-size: 16px;
            }
            .promise-grid {
                grid-template-columns: 1fr !important;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr !important;
                gap: 16px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr !important;
                gap: 20px;
            }
            .promise-card {
                padding: 28px;
            }
            .feature-card {
                padding: 28px;
            }
            .testimonial-card {
                padding: 24px;
            }
            .beta-container {
                padding: 28px 20px;
            }
            .form-row {
                grid-template-columns: 1fr !important;
                gap: 0;
            }
            .form-group input,
            .form-group textarea,
            .form-group select {
                padding: 14px 16px;
                font-size: 16px;
            }
            .whatsapp-float {
                width: 56px;
                height: 56px;
                bottom: 20px;
                right: 20px;
            }
            .whatsapp-float svg {
                width: 28px;
                height: 28px;
            }
        }
        @media (max-width: 480px) {
            html {
                font-size: 15px;
            }
            h1 {
                font-size: 1.9rem !important;
            }
            .section-title {
                font-size: 1.6rem !important;
            }
            .hero {
                padding: 80px 16px 50px;
            }
            .hero-phone {
                max-width: 240px;
            }
            .phone-mockup {
                padding: 8px;
                border-radius: 30px;
            }
            .phone-screen {
                border-radius: 24px;
            }
            .phone-content {
                padding: 14px;
            }
            .content-card-phone {
                padding: 16px;
                margin-bottom: 12px;
            }
            .card-title {
                font-size: 13px;
            }
            .card-value {
                font-size: 24px;
            }
            .stats-grid {
                gap: 10px;
            }
            .stat-item {
                padding: 12px;
            }
            .stat-label {
                font-size: 10px;
            }
            .stat-value {
                font-size: 18px;
            }
            .product-item {
                padding: 10px;
                margin-bottom: 10px;
            }
            .product-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }
            .product-name {
                font-size: 12px;
            }
            .product-stock {
                font-size: 10px;
            }
            .container {
                padding: 0 16px;
            }
            .promise-card,
            .feature-card,
            .testimonial-card {
                padding: 24px 20px;
            }
            .beta-container {
                padding: 24px 16px;
            }
        }
        [lang="en"] .lang-fr { display: none; }
        [lang="fr"] .lang-en { display: none; }