/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
  }
  
  body {
    background: linear-gradient(to right, #C91818, #F97316, #FBBF24);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: start;
    padding-top: 80px;
    color: #333;
  }
  
  /* Title and Subtitle */
  h1 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 10px;
    letter-spacing: 1px;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  }
  
  p {
    color: #e0e0e0;
    margin-bottom: 25px;
    font-size: 1rem;
  }
  
  /* Input & Button Container */
  #todo-input {
    width: 320px;
    padding: 10px 14px;
    margin: 20px 0;
    border-radius: 8px;
    border: none;
    outline: none;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.15);
  }
  
  #todo-input:focus {
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
    transform: scale(1.02);
  }
  
  /* Add Button */
  #add-btn {
    margin-left: 10px;
    padding: 10px 20px;
    background: #4e54c8;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
  }
  
  #add-btn:hover {
    background: #8f94fb;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.3);
  }
  
  /* Todo List Container */
  #todo-list {
    list-style: none;
    margin-top: 30px;
    padding: 0;
    width: 360px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    overflow: hidden;
  }
  
  /* Each Todo Item */
  #todo-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.3s ease;
  }
  
  #todo-list li:hover {
    background: rgba(255, 255, 255, 0.1);
  }
  
  /* Checkbox styling */
  #todo-list input[type="checkbox"] {
    accent-color: #50fa7b;
    transform: scale(1.3);
    margin-right: 10px;
  }
  
  /* Todo Text */
  #todo-list span {
    flex: 1;
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.3s ease;
  }
  
  #todo-list span:hover {
    color: #a3ffea;
  }
  
  /* Delete Button */
  #todo-list button {
    background: #ff4b5c;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
  }
  
  #todo-list button:hover {
    background: #ff6b81;
    transform: scale(1.05);
  }
  
  /* Completed Todo Animation */
  #todo-list li input[type="checkbox"]:checked + span {
    text-decoration: line-through;
    color: #b0b0b0;
    transition: all 0.3s ease;
  }
  
  /* Smooth fade-in for new todos */
  #todo-list li {
    animation: fadeIn 0.4s ease forwards;
  }
  
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Responsive */
  @media (max-width: 480px) {
    body {
      padding-top: 50px;
    }
    #todo-input {
      width: 200px;
    }
    #todo-list {
      width: 300px;
    }
  }