.form-container {
        max-width: 400px;
        margin: 50px auto;
        background: white;
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 0 15px rgba(0,0,0,0.1);
        position: relative;
      }
   
      .btn-retour {
        background-color: #6c757d;
        color: white;
      }
      .btn-retour:hover {
        background-color: #5a6268;
      }

      /* 🎨 Style du bouton "Créer un compte" */
      .btn-creer-compte {
        display: block;
        margin: 20px auto 0;
        background: none;
        border: none;
        color: #00aaff;
        text-decoration: underline;
        font-size: 1rem;
        cursor: pointer;
        transition: color 0.3s ease;
      }

      .btn-creer-compte:hover {
        color: #a64ca6; /* mauve */
      }