/* Reset and Base Styles */
 * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #e9ecef 0%, #f4f6f8 100%);
    display: flex;
    align-items: center; /* Vertical centering */
    justify-content: center; /* Horizontal centering */
    min-height: 100vh;
    line-height: 1.5;
    color: #1a202c;
  }
  /* Container for the entire page */
  .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
  }

  /* Header styling */
  header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
  }

  /* Chat Form Container */
  #chat_form {
    width: 98%; /* Maintained wide width */
    margin: auto; /* Ensures horizontal centering */
    max-width: 1440px; /* Max width for larger screens */
    padding: 24px;
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex; /* Added to ensure internal content can be centered if needed */
    flex-direction: column; /* Align internal content vertically */
    align-items: center; /* Center internal content horizontally */
  }

  #chat_form:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
  }

  /* Subtle Border Accent */
  #chat_form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #3b82f6, #10b981);
  }

  /* Responsive Design */
  @media (max-width: 600px) {
    #chat_form {
      width: 90%; /* Slightly reduced for smaller screens */
      margin: auto;
      padding: 20px;
      border-radius: 12px;
    }

    #chat_form:hover {
      transform: none;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    }
  }

  /* Smooth Transitions for Dynamic Content */
  #chat_form * {
    transition: all 0.2s ease-in-out;
  }