body {
      font-family: Arial, sans-serif;
      background: #f9f9f9;
      padding: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .container {
      background: #fff;
      padding: 20px;
      border-radius: 8px;
      max-width: 500px;
      width: 100%;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    h1 {
      font-size: 1.5em;
      margin-bottom: 1em;
      text-align: center;
    }

    input[type="url"] {
      width: 90%;
      padding: 12px;
      font-size: 1em;
      margin-bottom: 1em;
      border: 1px solid #ccc;
      border-radius: 60px;
    }

    button {
      width: 100%;
      padding: 12px;
      font-size: 1em;
      border: none;
      border-radius: 5px;
      background-color: #3498db;
      color: white;
      cursor: pointer;
      margin-bottom: 10px;
    }

    button:hover {
      background-color: #2980b9;
    }

    .output-area {
      margin-top: 20px;
      display: none;
    }

    .link-box {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    input.share-link {
      width: 100%;
      padding: 10px;
      font-size: 1em;
      border: 1px solid #ccc;
      border-radius: 5px;
    }

    .btn-row {
      display: flex;
      gap: 10px;
    }

    @media (max-width: 480px) {
      button, input.share-link {
        font-size: 1em;
      }

      .btn-row {
        flex-direction: column;
      }
    }