* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
  }
  body {
    background-color: #f4f4f4;
  }
  .container-center {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  
  #form-title {
    text-align: center;
    margin: 1.5rem 0;
  }
  
  .signup-form,
  .signin-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    width: 350px;
    box-shadow: 0 4px 6px rgba(122, 105, 105, 0.1);
  }
  
  input,
  select {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  
  input[type="submit"] {
    background: #28a745;
    color: white;
    cursor: pointer;
  }
  input[type="submit"]:hover {
    background: #218838;
  }
  
  a {
    display: block;
    text-decoration: none;
  }
  
  .container {
    padding-left: 15px;
    padding-right: 15px;
  }
  
  #todo-list {
    background: white;
    padding: 2rem;
    margin-top: 1rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
  }
  
  .logout-btn {
    background-color: red;
    color: white;
    border: none;
    padding: 8px 16px;
    margin-left: 10px;
    cursor: pointer;
    border-radius: 5px;
  }
  .logout-btn:hover {
    background-color: #d32f2f;
  }
  
  #msg{
    color: red;
    text-align: center;
    font-size: 80%;
  }
  
  ul{
    list-style-type: none;
    padding: 0;
    margin-top: 2rem;  
  }
  
  li{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #ccc;
  }
  
  li:last-child{
    border-bottom: none;
  }
  
  li button{
    background-color: #dc3545;
    border: none;
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
  }
  
  li button:hover{
    opacity: 0.8;
  }
  
  li button.edit{
    background-color: #ffc107;
    margin-right: 5px;
  }
  
  .modal{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    justify-content: center;
    align-items: center;
  }
  
  .modal-content{
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    width: 350px;
    text-align: center;
    position: relative;
  }
  
  #closeModalBtn{
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
    cursor: pointer;
  }
  
  #closeModalBtn:hover{
    color: #dc3545;
  }
  
  #pincode{
    display: none;
  }