@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Poppins:wght@300;400;600&display=swap');

        body {
            margin: 0;
            background: #000;
            overflow-x: hidden;   /* Empêche juste le scroll horizontal */
            overflow-y: auto;     /* Autorise le scroll vertical */
            font-family: 'Poppins', sans-serif;
            color: white;
        }
        a {
            color: inherit;          /* Le lien prend la couleur du texte autour */
            text-decoration: none;   /* Enlève le soulignement */
        }

        a:hover {
            color: #00eaff;          /* Couleur au survol (optionnel) */
        }

        /* Effet de vortex lumineux */
        .vortex {
            position: fixed;
            top: 50%;
            left: 50%;
            width: 2000px;
            height: 2000px;
            background: radial-gradient(circle, #00eaff22, transparent 70%);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            animation: spin 25s linear infinite;
            z-index: -2;
        }

        @keyframes spin {
            from { transform: translate(-50%, -50%) rotate(0deg); }
            to { transform: translate(-50%, -50%) rotate(360deg); }
        }

        /* Particules */
        #particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
        }

        /* Titre quantique */
        .title {
            text-align: center;
            margin-top: 80px;
            font-size: 4rem;
            font-family: 'Orbitron', sans-serif;
            letter-spacing: 5px;
            color: #00eaff;
            text-shadow: 0 0 20px #00eaff, 0 0 50px #0088ff;
            animation: fadeIn 2s ease;
        }

        .subtitle {
            text-align: center;
            margin-top: 10px;
            font-size: 1.3rem;
            opacity: 0.8;
            animation: fadeIn 2.5s ease;
        }

        /* Conteneur des cartes */
        .container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 40px;
            padding: 60px 20px;
            animation: fadeIn 3s ease;
        }

        /* Cartes holographiques */
        .card {
            width: 340px;
            height: 430px;
            background: rgba(0, 255, 255, 0.06);
            border: 1px solid rgba(0, 200, 255, 0.3);
            border-radius: 15px;
            backdrop-filter: blur(14px);
            padding: 20px;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            transition: 0.35s;
        }

        .card:hover {
            transform: translateY(-12px) scale(1.07);
            border-color: #00eaff;
            box-shadow: 0 0 35px #00eaff88;
        }

        .card h2 {
            margin: 0;
            font-size: 1.9rem;
            color: #00eaff;
        }

        .card p {
            margin-top: 10px;
            opacity: 0.75;
        }

        /* Glow interne */
        .glow {
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, #00eaff33, transparent 60%);
            top: -50%;
            left: -50%;
            transform: scale(0);
            transition: 0.5s;
        }

        .card:hover .glow {
            transform: scale(1);
        }

        /* Fade-in */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        #navBar {
            position: fixed;
            top: 20px;
            right: 20px;
            background: rgba(0, 255, 255, 0.08);
            border: 1px solid #00eaff55;
            backdrop-filter: blur(10px);
            padding: 10px 15px;
            border-radius: 10px;
            display: none; /* caché au départ */
            animation: fadeIn 0.4s ease;
        }

        #navInput {
            background: transparent;
            border: none;
            outline: none;
            color: #00eaff;
            font-size: 1rem;
            width: 150px;
        }

        #navInput::placeholder {
            color: #00eaff88;
        }