* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', sans-serif;
    background: #f4f4f4;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding-top: 50px;
  }
  
  .container {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
  }
  
  h1 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.8rem;
  }
  
  form {
    display: flex;
    margin-bottom: 1.5rem;
  }
  
  #task-input {
    flex: 1;
    padding: 0.5rem;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px 0 0 5px;
  }
  
  button {
    padding: 0.5rem 1rem;
    border: none;
    background: #0077cc;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    border-radius: 0 5px 5px 0;
    transition: background 0.2s ease;
  }
  
  button:hover {
    background: #005fa3;
  }
  
  #task-list {
    list-style: none;
  }
  
  .task {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f9f9f9;
    padding: 0.5rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 5px;
  }
  .task button {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 8px;
    transition: transform 0.2s;
  }
  .button-group {
    display: flex;
    gap: 5px;
  }
  .task button:hover {
    transform: scale(1.2);
  }
  .task button {
    margin-left: 5px;
  }
  
  .task.completed span {
    text-decoration: line-through ;
    color: #06ac0e;
  }
  
  .task button {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.2s;
  }
  .task-text {
    flex: 1;
    word-break: break-word;
  }
  .task.completed .task-text {
    text-decoration: line-through;
    color: #06ac0e;
  }
  .task-counter {
    text-align: center;
    margin-top: 1rem;
    font-weight: bold;
    color: #444;
  }
  .filters {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 1rem;
  }
  
  .filter-btn {
    background: #e0e0e0;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-weight: bold;
    border-radius: 5px;
    transition: background 0.2s;
  }
  
  .filter-btn:hover {
    background: #ccc;
  }
  
  .filter-btn.active {
    background: #0077cc;
    color: #fff;
  }