.clean-header { text-align: center; margin-bottom: 40px; }
  .clean-header h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.03em; }
  .clean-header p { color: var(--text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

  .split-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 24px;
    margin-bottom: 60px;
  }
  @media (max-width: 900px) {
    .split-layout { grid-template-columns: 1fr; }}

  .editor-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .panel-section h3 { margin-top: 0; margin-bottom: 12px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); }

  /* Standard Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    border: none;
  }
  .btn-primary {
    background: var(--accent);
    color: #11141d;
    padding: 14px 28px;
    box-shadow: 0 4px 14px rgba(0, 210, 255, 0.25);
  }
  .btn-primary:hover {
    background: #33dcff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 210, 255, 0.35);
  }
  .btn-secondary {
    background: rgba(255,255,255,0.05);
    color: var(--text-main);
    padding: 10px 18px;
    border: 1px solid var(--border-color);
  }
  .btn-secondary:hover {
    background: rgba(255,255,255,0.1);
  }
  .btn-demo {
    background: transparent;
    color: var(--text-muted);
    padding: 12px 24px;
    border: 1px solid var(--border-color);
  }
  .btn-demo:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
  }

  /* Progress Bar */
  .progress-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
    display: none;
  }
  .progress-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    transition: width 0.2s ease;
  }

  /* Extraction Results UI */
  .extracted-data {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    flex: 1;
    overflow-y: auto;
  }
  .data-field {
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
  }
  .data-field label {
    display: block;
    font-size: 12px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    margin-bottom: 8px;
  }
  .data-field .value {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-main);
  }
  .data-field textarea {
    width: 100%;
    height: 180px;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: monospace;
    font-size: 13px;
    line-height: 1.6;
    resize: none;
    box-sizing: border-box;
  }
  .data-field textarea:focus { outline: none; }

  /* Info Section */
  .info-section { margin-top: 60px; border-top: 1px solid var(--border-color); padding-top: 50px; }
  .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; margin-bottom: 60px; }
  .feature-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 28px; }
  .feature-icon { margin-bottom: 16px; color: var(--accent); display: inline-flex; }
  .feature-card h3 { font-size: 1.2rem; margin-top: 0; margin-bottom: 12px; }
  .feature-card p { color: var(--text-secondary); line-height: 1.6; margin: 0; }