body {
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    overflow: hidden;
  }
  
  .container {
    position: relative;
    text-align: center;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
  }
  
  .animate-text {
    animation: fadeInUp 2s ease-out;
  }
  
  h1 {
    font-size: 3em;
    margin-bottom: 0.5em;
  }
  
  p {
    font-size: 1.5em;
    margin-bottom: 1.5em;
  }
  
  .button {
    display: inline-block;
    padding: 15px 30px;
    font-size: 1em;
    color: #fff;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid #fff;
    border-radius: 30px;
    cursor: pointer;
    position: relative;
  }
  
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(50px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Additional styles for button behaviors */
  .button.gray-out {
    background: rgba(255, 255, 255, 0.3);
    color: #ccc;
    border-color: #ccc;
    pointer-events: none;
  }
  
  .button.shake {
    animation: shake 0.5s;
    animation-iteration-count: infinite;
  }
  
  @keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
    100% { transform: translateX(0); }
  }
  
  .button.rotate {
    animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
    100% { transform: rotate(360deg); }
  }
  
  .button.transparent {
    opacity: 0.5;
  }
  
  /* Bubble Message Styles */
  .bubble-message {
    position: absolute;
    left: 50%;
    top: 40%;
    width: fit-content;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 1em;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
  }
  
  .bubble-message.show {
    opacity: 1;
  }