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;
    }