body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f5f7fa;
    color: #333;
    padding: 20px;
  }
  
  .container {
    max-width: 800px;
    width: 100%;
    padding: 30px;
    border-radius: 12px;
    background-color: #fff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    text-align: center;
    color: #2563eb;
    margin-top: 0;
  }
  
  .description {
    text-align: center;
    margin-bottom: 25px;
    color: #64748b;
  }
  
  .input-section, .output-section {
    margin-bottom: 20px;
  }
  
  label {
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
    color: #475569;
  }
  
  textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    min-height: 120px;
    font-size: 16px;
    resize: vertical;
    box-sizing: border-box;
    font-family: inherit;
  }
  
  .converter-controls {
    display: flex;
    gap: 15px;
    margin: 20px 0;
    justify-content: center;
  }
  
  .output-container {
    position: relative;
  }
  
  .output-textarea {
    background-color: #f8fafc;
    min-height: 150px;
  }
  
  .output-container .loading {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(248, 250, 252, 0.7);
    align-items: center;
    justify-content: center;
    z-index: 2;
    border-radius: 8px;
  }
  
  .dot-flashing {
    position: relative;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #2563eb;
    color: #2563eb;
    animation: dot-flashing 1s infinite linear alternate;
    animation-delay: 0.5s;
  }
  
  .dot-flashing::before, .dot-flashing::after {
    content: '';
    display: inline-block;
    position: absolute;
    top: 0;
  }
  
  .dot-flashing::before {
    left: -15px;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #2563eb;
    color: #2563eb;
    animation: dot-flashing 1s infinite alternate;
    animation-delay: 0s;
  }
  
  .dot-flashing::after {
    left: 15px;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #2563eb;
    color: #2563eb;
    animation: dot-flashing 1s infinite alternate;
    animation-delay: 1s;
  }
  
  @keyframes dot-flashing {
    0% {
      background-color: #2563eb;
    }
    50%, 100% {
      background-color: rgba(37, 99, 235, 0.2);
    }
  }
  
  button {
    padding: 12px 24px;
    background-color: #2563eb;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  
  button:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
  }
  
  button:disabled {
    background-color: #94a3b8;
    cursor: not-allowed;
    transform: none;
  }
  
  .copy-btn {
    background-color: #475569;
  }
  
  .copy-btn:hover {
    background-color: #334155;
  }
  
  .style-selector {
    margin-bottom: 20px;
  }
  
  select {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 16px;
    background-color: white;
  }
  
  .typing-text {
    min-height: 150px;
    padding: 15px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background-color: #f8fafc;
    overflow-y: auto;
    font-size: 16px;
    line-height: 1.6;
  }
  
  .cursor {
    display: inline-block;
    width: 2px;
    height: 18px;
    background-color: #2563eb;
    margin-left: 2px;
    vertical-align: middle;
    animation: blink 1s infinite;
  }
  
  @keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
  }
  
  .footer {
    text-align: center;
    margin-top: 30px;
    color: #64748b;
    font-size: 14px;
  }