.todo-container {
    max-width: 600px;
    margin: 50px auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  .todo-container h2 {
    text-align: center;
    color: #003366;
    margin-bottom: 20px;
  }
  #taskInput {
    width: 75%;
    padding: 10px;
    margin-right: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
  }
  #addTaskButton, #saveTaskButton {
    padding: 10px 15px;
    background-color: #2563eb;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
  }
  ul {
    list-style: none;
    padding: 0;
  }
  li {
    background: #f1f7fd;
    margin: 10px 0;
    padding: 10px;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  li.completed {
    text-decoration: line-through;
    color: grey;
  }
  button.delete {
    background: red;
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
  }

  
  li {
    background: #e8f0fe;
    margin: 10px 0;
    padding: 12px 20px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 5px solid #2563eb;
    transition: background 0.3s;
  }
  
  li:hover {
    background: #d6e4fc;
  }
  
  li.completed {
    text-decoration: line-through;
    color: grey;
  }
  
  button.edit {
    background: #ffc107;
    color: white;
    border: none;
    padding: 6px 12px;
    margin-right: 5px;
    border-radius: 6px;
    cursor: pointer;
  }
  
  button.delete {
    background: red;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
  }
  
  /* Responsive improvements for To-Do List */
  @media (max-width: 600px) {
    #taskInput {
      width: 100%;
      margin-bottom: 10px;
    }
    
    #addTaskButton {
      width: 100%;
    }
  }
  .todo-section {
    background-image: url('../images/study-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 60px 20px;
    border-radius: 20px;
    color: #fff;
    /*box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);*/
  }
  
  .header-content {
    text-align: center;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 40px 20px;
    border-radius: 12px;
    color: white;
    max-width: 700px;
    margin: 0 auto;
  }
  
  .todo-header {
    text-align: center;
    background-image: url('../images/study-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 100px 20px;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  }
  
  .todo-section {
    background: #f1f7fd;
    padding: 60px 20px;
  }
  li {
    background: #eaf3fb;
    margin: 10px 0;
    padding: 12px 16px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    font-size: 16px;
    font-weight: 500;
    color: #003366;
  }
  body, html {
    margin: 0;
    padding: 0;
    box-shadow: none;
    overflow-x: hidden;
  }
  
  .todo-header {
    margin-bottom: 0;
    border-radius: 0;
    box-shadow: none !important;
  }
  
  .todo-container {
    margin-top: 0;
    box-shadow: none !important;
  }