    body {
      margin: 0;
      background: #121212;
      color: #eee;
      font-family: 'Poppins', sans-serif;
      display: flex;
      height: 100vh;
      justify-content: center;
      align-items: center;
      padding: 20px;
    }
    .container {
      background: linear-gradient(145deg, #1e1e1e, #121212);
      width: 450px;
      border-radius: 20px;
      box-shadow: 0 8px 30px #0d0d0d;
      padding: 3rem 2.5rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
      overflow: hidden;
    }
    .title {
      font-weight: 600;
      font-size: 2.4rem;
      text-align: center;
      color: #00ffab;
      letter-spacing: 0.15em;
      margin: 0;
      user-select: none;
    }
    .counts {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      font-weight: 600;
      font-size: 1.15rem;
      color: #00ffabcc;
      user-select: none;
      margin-bottom: 0.8rem;
    }
    form {
      display: flex;
      gap: 1rem;
    }
    input[type="text"] {
      flex: 1;
      background: #222;
      border: none;
      border-radius: 12px;
      padding: 0.8rem 1rem;
      color: #eee;
      font-size: 1.1rem;
      transition: background-color 0.3s;
      box-shadow: inset 2px 2px 6px #090909, inset -2px -2px 6px #3a3a3a;
      outline: none;
    }
    input[type="text"]:focus {
      background-color: #141414;
    }
    button.add-btn {
      background: linear-gradient(135deg, #00ffab 20%, #00d6a0 90%);
      border: none;
      color: #121212;
      border-radius: 12px;
      font-weight: 600;
      font-size: 1.1rem;
      padding: 0 2rem;
      cursor: pointer;
      box-shadow: 0 5px 12px #00ffab66;
      transition: background 0.3s ease;
    }
    button.add-btn:hover {
      background: linear-gradient(135deg, #00d6a0 20%, #00ffab 90%);
    }
    ul.todo-list {
      list-style: none;
      padding: 0;
      margin: 0;
      max-height: 320px;
      overflow-y: auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    @keyframes slideInRight {
      0% {
        opacity: 0;
        transform: translateX(100%);
      }
      100% {
        opacity: 1;
        transform: translateX(0);
      }
    }
    @keyframes deleteFade {
      from {
        opacity: 1;
        transform: scale(1);
      }
      to {
        opacity: 0;
        transform: scale(0.6);
        height: 0;
        margin: 0;
        padding: 0;
      }
    }
    li.task-item {
      background: #222;
      border-radius: 15px;
      box-shadow: 2px 2px 6px #090909, -2px -2px 6px #333;
      display: flex;
      align-items: center;
      padding: 0.8rem 1rem;
      color: #eee;
      font-size: 1.1rem;
      user-select: none;
      transition: background-color 0.3s;
      animation: slideInRight 0.4s ease forwards;
      overflow: hidden;
    }
    li.task-item.done {
      text-decoration: line-through;
      background: #050505;
      color: #00ffab99;
      font-style: italic;
    }
    li.deleting {
      animation: deleteFade 0.45s forwards;
    }
    .task-buttons {
      margin-left: auto;
      display: flex;
      gap: 0.6rem;
    }
    button.done-btn,
    button.delete-btn {
      border: none;
      cursor: pointer;
      padding: 0.3rem 0.8rem;
      border-radius: 12px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: box-shadow 0.25s, background-color 0.25s;
      user-select: none;
    }
    button.done-btn {
      background: #00ffab;
      color: #121212;
      box-shadow: 0 0 8px #00ffabcc;
    }
    button.done-btn:hover {
      background: #00d6a0;
      box-shadow: 0 0 12px #00d6a066;
    }
    button.delete-btn {
      background: #ff3864;
      color: #f5f5f5;
      box-shadow: 0 0 8px #ff3864cc;
      position: relative;
      overflow: hidden;
    }
    button.delete-btn:hover {
      background: #e83355;
      box-shadow: 0 0 12px #e8335588;
    }