html, body {
      margin: 0;
      height: 1000%;
      font-family: 'Segoe UI', sans-serif;
      background: linear-gradient(to bottom, #dcdcdc, #000000);
      color: #fff;
      display: flex;
      flex-direction: column;
    }

    header {
      background-color: #222;
      color: white;
      padding: 1rem 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    header h1 {
      margin: 0;
      font-size: 1.8rem;
    }

    nav a {
      color: white;
      text-decoration: none;
      margin-left: 1.5rem;
      font-weight: bold;
    }

    .container {
      max-width: 1400px;
      margin: 2rem auto;
      padding: 3rem;
      background-color: #111;
      border-radius: 10px;
      box-shadow: 0 0 10px rgba(0,0,0,0.5);
      flex-grow: 1;
    }

    h2 {
      text-align: center;
      color: #00ffcc;
      margin-bottom: 2rem;
      font-size: 2rem;
    }

    form {
      display: flex;
      justify-content: center;
      margin-bottom: 2rem;
      flex-wrap: wrap;
      gap: 1rem;
    }

    input[type="text"] {
      padding: 0.7rem;
      font-size: 1.1rem;
      width: 320px;
      border: none;
      border-radius: 5px;
    }

    button {
      padding: 0.7rem 1.2rem;
      font-size: 1.1rem;
      background-color: #0077ff;
      color: white;
      border: none;
      border-radius: 5px;
      font-weight: bold;
      cursor: pointer;
      transition: background-color 0.3s ease;
    }

    button:hover {
      background-color: #005bb5;
    }

    table {
      width: 80%;
      border-collapse: collapse;
      background-color: #222;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 0 10px rgba(0,0,0,0.5);
      font-size: 1.1rem;
    }

    th, td {
      padding: 1.2rem;
      text-align: center;
      border-bottom: 1px solid #444;
      line-height: 1.6;
    }

    th {
      background-color: #333;
      color: #00ffcc;
    }

    td {
      color: #ccc;
    }

    tr:hover {
      background-color: #2a2a2a;
    }

    footer {
      background-color: #222;
      color: #ccc;
      text-align: center;
      padding: 2rem;
      margin-top: auto;
    }

    @media (max-width: 768px) {
      table, thead, tbody, th, td, tr {
        display: block;
      }

      thead {
        display: none;
      }

      tr {
        margin-bottom: 1rem;
        background-color: #111;
        border-radius: 10px;
        padding: 1rem;
      }

      td {
        padding-left: 50%;
        position: relative;
        text-align: left;
      }

      td::before {
        content: attr(data-label);
        position: absolute;
        left: 1rem;
        font-weight: bold;
        color: #00ffcc;
      }
    }
  .dropdown {
    display: inline-block;
    position: relative;
  }

  .dropdown-content {
    display: none;
    position: absolute;
    background-color: #1e1e1e;
    min-width: 160px;
    z-index: 1;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  }

  .dropdown-content a {
    display: block;
    padding: 10px;
    color: white;
    text-decoration: none;
  }

  .dropdown-content a:hover {
    background-color: #333;
  }