body { font-family: sans-serif; background-color: #f4f7f9; color: #333; margin: 0; padding: 20px; } .container { max-width: 1400px; margin: 0 auto; background: #fff; padding: 25px 40px; border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,0.08); } header { text-align: center; border-bottom: 1px solid #e0e0e0; padding-bottom: 20px; margin-bottom: 30px; } h1 { font-size: 2.2em; color: #2c3e50; } h2 { font-size: 1.5em; color: #34495e; border-bottom: 2px solid #3498db; padding-bottom: 8px; display: inline-block; } .main-content { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; } textarea, input { width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 6px; font-size: 1em; margin-bottom: 20px; box-sizing: border-box; }
#timeline-data { min-height: 300px; }
  button { background-color: #3498db; color: #fff; padding: 12px 25px; border: none; border-radius: 6px; font-size: 1.1em; cursor: pointer; } button:hover { background-color: #2980b9; } #image-preview-container { width: 100%; min-height: 400px; border: 2px dashed #d0d0d0; border-radius: 8px; display: flex; justify-content: center; align-items: center; margin-bottom: 20px; background-color: #fafafa; } #result-image { max-width: 100%; max-height: 100%; display: none; } .spinner-container { text-align: center; padding: 40px; } .spinner { border: 6px solid #f3f3f3; border-top: 6px solid #3498db; border-radius: 50%; width: 50px; height: 50px; animation: spin 1s linear infinite; margin: 0 auto 15px auto; } @keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } } .error-container { padding: 20px; border: 1px solid #e74c3c; background-color: #fbeae8; color: #c0392b; border-radius: 8px; }