* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
  }
  
  body {
    background: linear-gradient(135deg, #e0f7fa, #80deea);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  
  .todo-container {
    background: white;
    padding: 30px 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    width: 95%;
    max-width: 500px;
  }
  
  h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #006064;
  }
  
  .input-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
  }
  
  .input-group input,
  .input-group select {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 14px;
    flex: 1;
    min-width: 100px;
  }
  
  .input-group button {
    padding: 10px 16px;
    background-color: #00796b;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
  }
  
  .input-group button:hover {
    background-color: #004d40;
  }
  
  ul {
    list-style: none;
  }
  
  li {
    background: #f1f8e9;
    border-left: 5px solid #aed581;
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 10px;
    position: relative;
    transition: background 0.3s;
  }
  
  li.completed {
    background-color: #e0e0e0;
    text-decoration: line-through;
    color: #666;
  }
  
  li span {
    display: block;
    font-size: 15px;
  }
  
  li .meta {
    font-size: 12px;
    color: #555;
    margin-top: 4px;
  }
  
  .delete-btn {
    position: absolute;
    right: 12px;
    top: 12px;
    background: none;
    border: none;
    font-size: 18px;
    color: #e57373;
    cursor: pointer;
  }
  
  .delete-btn:hover {
    color: #c62828;
  }
  
  .clear-btn {
    background-color: #ff5252;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 10px;
    width: 100%;
    margin-top: 10px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
  }
  
  .clear-btn:hover {
    background-color: #d32f2f;
  }