* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: Poppins, 'Segoe UI', sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: linear-gradient(135deg, #1A3A52 0%, #2C5F7F 50%, #1A3A52 100%);
            color: white;
            padding: 20px;
            padding-top: 100px;
        }
        
        .container {
            text-align: center;
            z-index: 0;
            width: 100%;
            padding: 60px 40px;
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            border: 1px solid rgba(141, 173, 146, 0.96);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            animation: fadeIn 1s ease-in;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .logo {
            margin-bottom: 20px;
            animation: bounce 4s infinite;
            text-align: center; 
        }
        
        /* Style du logo en desktop */
        #logo-unitable {
            display: block;
            margin: 0 auto;       /* Centre l'image */
        }

        #photo-romain {
            width: 100%;           /* 40% de la largeur du conteneur parent */
            height: auto;         /* Garde les proportions */
            max-width: 150px;     /* Limite la taille max */
            display: block;
            margin: 0 auto 15px;       /* Centre l'image */

        }
        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        
        h1 {
            font-size: 3.5em;
            margin-bottom: 20px;
            font-weight: 700;
            letter-spacing: -1px;
        }
        
        .tagline {
            font-size: 1.8em;
            margin-bottom: 30px;
            opacity: 0.9;
            font-weight: 300;
        }
        
        .description {
            font-size: 1.3em;
            margin-bottom: 40px;
            line-height: 1.6;
            opacity: 0.95;
        }

        .description a {
            color: white;
            text-decoration: none;
            font-size: 1em;
            padding: 10px 20px;
            border-radius: 25px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .launch-date {
            font-size: 1.5em;
            margin-bottom: 40px;
            padding: 20px 40px;
            background: rgba(141, 173, 146, 0.96);
            border-radius: 50px;
            display: inline-block;
            border: 2px solid rgba(18, 169, 42, 0.8);
            font-weight: 600;
        }
        
        .launch-date .emoji {
            margin-right: 10px;
        }
        
        .contact {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .contact-title {
            font-size: 1.2em;
            margin-bottom: 20px;
            opacity: 0.8;
        }
        
        .email {
            font-size: 1.5em;
            color: #F57C00;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .email:hover {
            color: #FF9800;
            transform: scale(1.05);
        }
        
        .social {
            margin-top: 30px;
            display: flex;
            justify-content: center;
            gap: 20px;
        }
        
        .social a {
            color: white;
            text-decoration: none;
            font-size: 1.1em;
            padding: 10px 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 25px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .social a:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        
        .features {
            margin: 50px 50px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);             
            gap: 20px;
            text-align: left;
        }

        .features a {
            color: white;
            text-decoration: none;
        }

        .features-special {
            margin: 50px 50px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);             
            gap: 20px;
            text-align: justify;
        }

        .feature {
            padding: 20px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            border-left: 3px solid rgba(141, 173, 146, 0.96);
        }
        
        .feature-icon {
            font-size: 2em;
            margin-bottom: 10px;
        }
        
        .feature-title {
            font-size: 1.1em;
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .feature-desc {
            font-size: 0.95em;
            opacity: 0.9;
        }
        
        footer {
            margin-top: 60px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9em;
            opacity: 0.75;
        }
              .button {
            color: white;
            text-decoration: none;
            font-size: 1em;

            border-radius: 25px;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            cursor: pointer;
	    }

/* =====================================================
   NAVBAR DESKTOP (PAR DÉFAUT - > 768px)
===================================================== */

.navbar {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem 2rem;
    position: fixed;          /* ✅ Fixe en haut */
    top: 0;                   /* ✅ Collée en haut */
    left: 0;                  /* ✅ Pleine largeur */
    width: 100%;
    z-index: 100;             /* ✅ Au-dessus du contenu */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Menu horizontal visible en desktop */
.nav-links {
    list-style: none;
    display: flex !important;
    flex-direction: row !important;
    gap: 1rem;
    margin: 0 !important;
    padding: 0 !important;
    justify-content: center;
    align-items: center;
    position: relative !important;    /* ✅ Changé de "top" à "relative" */
    width: auto !important;
    height: auto !important;
    background: transparent !important;
}

.navbar li {
    position: relative;
    margin: 0;
    padding: 0;
}

.navbar li a {
    color: white;
    text-decoration: none;
    font-size: 1.1em;
    padding: 10px 20px;
    display: block;
    background: rgba(141, 173, 146, 0.96);
    border-radius: 25px;
    transition: all 0.3s ease;
}

.navbar li a:hover {
    color: #53CEC4;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.navbar li a:visited,
.navbar li a:active {
    color: white;
}

.navbar li a:focus,
.social a:focus {
    outline: 3px solid #53CEC4;
    outline-offset: 2px;
}

/* Bouton burger INVISIBLE en desktop */
.burger-menu {
    display: none !important;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.burger-line {
    width: 30px;
    height: 3px;
    background-color: white;
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Animation du burger en X */
.burger-menu.active .burger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.burger-menu.active .burger-line:nth-child(2) {
    opacity: 0;
}

.burger-menu.active .burger-line:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* =====================================================
   NAVBAR MOBILE (< 768px UNIQUEMENT)
===================================================== */


        /* Responsive */
        @media (max-width: 768px) {
            h1 { font-size: 2.5em; }
            .tagline { font-size: 1.3em; }
            .description { font-size: 1.1em; }
            .launch-date { font-size: 1.2em; padding: 15px 30px; }
            .container { padding: 40px 20px; }
            .features { grid-template-columns: 1fr; }  /* Corrigé: 2fr → 1fr */
            .social { flex-direction: column; }
            .navbar { max-width: 600px; }
            .features-special { grid-template-columns: 1fr; }

            #logo-unitable {
                font-size: 3em;    /* Réduire font-size si nécessaire */
                margin-bottom: 15px;
                width: 80%;
                height: auto;
            }

        }
        @media screen and (max-width: 768px) {
            .navbar {
                padding: 1rem;
            }
            
            /* Afficher le bouton burger EN MOBILE */
            .burger-menu {
                display: flex !important;
                position: absolute;
                right: 1rem;
                top: 50%;
                transform: translateY(-50%);
            }
            
            /* Menu caché par défaut EN MOBILE */
            .nav-links {
                position: fixed !important;
                top: 0 !important;
                right: -100% !important;
                width: 70% !important;
                height: 100vh !important;
                background: rgba(255, 255, 255, 0.05) !important;
                flex-direction: column !important;
                justify-content: center !important;
                align-items: center !important;
                gap: 2rem !important;
                transition: right 0.3s ease !important;
                z-index: 1000 !important;
                padding: 2rem !important;
                margin: 0 !important;
            }
            
            /* Menu visible quand actif EN MOBILE */
            .nav-links.active {
                right: 0 !important;
            }
            
            /* Liens en pleine largeur EN MOBILE */
            .navbar li {
                width: 100%;
                text-align: center;
            }
            
            .navbar li a {
                width: 100%;
                padding: 15px 30px;
                font-size: 1.3em;
            }
        }

        /* Mobile très petit */
        @media screen and (max-width: 480px) {
            .nav-links {
                width: 85% !important;
            }
            
            .navbar li a {
                font-size: 1.1em;
            }
        }