body {
      font-family: "Segoe UI", Roboto, sans-serif;
      background-color: #f9fafb;
      color: #1f2937;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
      margin: 0;
      padding: 1rem;
    }
    .container {
      background: white;
      padding: 2rem;
      border-radius: 1rem;
      box-shadow: rgba(0, 0, 0, 0.1) 0px 10px 20px;
      width: 100%;
      max-width: 400px;
      text-align: center;
    }
    h1 {
      color: #4f46e5;
      margin-bottom: 0.5rem;
    }
    .subtitle {
      color: #6b7280;
      margin-bottom: 1.5rem;
      font-size: 1rem;
    }
    input[type="text"] {
      width: 100%;
      padding: 0.75rem;
      margin-bottom: 1rem;
      border-radius: 8px;
      border: 1px solid #ccc;
      font-size: 1rem;
      box-sizing: border-box;
    }
    #google-login {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      background-color: white;
      color: #555;
      border: 1px solid #ddd;
      padding: 0.75rem;
      border-radius: 8px;
      font-size: 1rem;
      cursor: pointer;
      width: 100%;
      transition: background-color 0.3s ease;
    }
    #google-login:hover:not(:disabled) {
      background-color: #f3f4f6;
    }
    #google-login:disabled {
      background-color: #e5e7eb;
      cursor: not-allowed;
      color: #9ca3af;
    }
    #google-login img {
      height: 20px;
    }

    /* Modal background */
    .modal-overlay {
      position: fixed;
      inset: 0;
      background-color: rgba(0,0,0,0.5);
      display: none; /* Hidden by default */
      align-items: center;
      justify-content: center;
      z-index: 1000;
      padding: 1rem;
    }
    /* Modal content box */
    .modal {
      background: white;
      border-radius: 12px;
      max-width: 400px;
      width: 100%;
      padding: 2rem;
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      text-align: center;
      color: #111827;
    }
    .modal h2 {
      margin-top: 0;
      margin-bottom: 1rem;
      font-size: 1.5rem;
      color: #4f46e5;
    }
    .modal p {
      margin-bottom: 1.5rem;
      font-size: 1.1rem;
      color: #374151;
      word-break: break-word;
    }
    .modal button {
      background-color: #4f46e5;
      border: none;
      color: white;
      padding: 0.75rem 1.5rem;
      font-size: 1rem;
      border-radius: 8px;
      cursor: pointer;
      transition: background-color 0.3s ease;
    }
    .modal button:hover {
      background-color: #4338ca;
    }

    /* Responsive tweaks */
    @media (max-width: 480px) {
      .container {
        padding: 1.5rem;
      }
      .modal {
        padding: 1.5rem;
      }
      .modal h2 {
        font-size: 1.25rem;
      }
      .modal p {
        font-size: 1rem;
      }
    }

    @media (min-width: 768px) {
      .container {
        max-width: 450px;
      }
      .modal {
        max-width: 450px;
      }
    }
    @media (min-width: 1024px) {
      .container {
        max-width: 400px;
      }
      .modal {
        max-width: 400px;
      }
    }