/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  /* Body Styling */
  body {
    font-family: 'Poppins', Arial, sans-serif;
    line-height: 1.6;
    background: linear-gradient(145deg, #e3f2fd, #bbdefb);
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
  }
  
  /* Container Styling */
  .container {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 30px;
    max-width: 900px;
    width: 100%;
  }
  
  /* Header Styling */
  header {
    text-align: center;
    margin-bottom: 20px;
  }
  
  h1 {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 10px;
  }
  
  #search-bar {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s;
  }
  
  #search-bar:focus {
    border-color: #007bff;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.4);
  }
  
  /* Topic Headings */
  h2 {
    font-size: 1.5rem;
    color: #3f51b5;
    margin-top: 30px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3f51b5;
  }
  
  /* Question List Styling */
  ul {
    list-style: none;
    padding: 0;
  }
  
  li {
    background: #f9f9f9;
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, background 0.3s;
  }
  
  li:hover {
    background: #e3f2fd;
    transform: translateX(10px);
  }
  
  li::before {
    content: "📘";
    margin-right: 10px;
    font-size: 1.5rem;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    h1 {
      font-size: 1.5rem;
    }
  
    li {
      font-size: 0.9rem;
      padding: 10px;
    }
  }