/* Variables CSS pour faciliter les modifications */
        :root {
            --text-color: #333;
            --light-text-color: #f0f0f0;
            --background-color: #f7f9fc;
            --card-background: #ffffff;
            --border-color: #e0e0e0;
            --shadow-light: rgba(0, 0, 0, 0.08);
            --font-family: 'Poppins', sans-serif;
        }

        /* Réinitialisation de base */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-family);
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color)); /* Dégradé jeune et moderne */
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            color: var(--text-color);
            line-height: 1.6;
        }

        /* Conteneur principal d'authentification */
        .auth-container {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            padding: 20px;
        }

        /* Carte d'authentification (le formulaire) */
        .auth-card {
            background-color: var(--card-background);
            padding: 40px;
            border-radius: 15px; /* Bords plus arrondis */
            box-shadow: 0 10px 30px var(--shadow-light); /* Ombre plus douce */
            width: 100%;
            max-width: 450px; /* Taille maximale pour la carte */
            text-align: center;
            transform: translateY(0);
            transition: transform 0.3s ease-in-out;
        }

        .auth-card:hover {
            transform: translateY(-5px); /* Petit effet au survol */
        }

        .auth-card h2 {
            color: var(--primary-color);
            margin-bottom: 30px;
            font-size: 2.2em;
            font-weight: 600;
        }
        .auth-card form p {
            margin-bottom: 25px; /* Espacement entre les champs */
            text-align: left;
        }

        .auth-card form p label {
            display: block; /* Force le label à être sur sa propre ligne */
            margin-bottom: 8px; /* Espacement entre le label et le champ */
            font-weight: 600;
            color: #555;
            font-size: 0.95em;
        }

        /* Boutons */
        .btn {
            display: inline-block;
            width: 100%;
            padding: 15px 25px;
            border: none;
            border-radius: 8px;
            font-size: 1.1em;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            text-align: center;
        }

        .btn.primary {
            background: linear-gradient(to right, #188AC9, #28a7ff);
            color: var(--light-text-color);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
        }

        .btn.primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 20px rgba(0, 0, 0, 0.2);
            opacity: 0.95;
        }

        /* Liens en bas des formulaires */
        .auth-link {
            margin-top: 25px;
            font-size: 0.95em;
            color: #666;
        }

        .auth-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .auth-link a:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }

        /* Responsive Design */
        @media (max-width: 600px) {
            .auth-card {
                padding: 30px 20px;
                margin: 15px; /* Ajoute un peu de marge sur les petits écrans */
            }

            .auth-card h2 {
                font-size: 1.8em;
                margin-bottom: 25px;
            }

            .auth-card form p label {
                font-size: 0.9em;
            }

            .btn {
                padding: 12px 20px;
                font-size: 1em;
            }
        }