/* Monospace Textareas */
    .json-textarea {
      width: 100%;
      min-height: 240px;
      padding: 16px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
      font-size: 0.875rem;
      color: var(--color-text);
      background: var(--color-surface);
      resize: vertical;
      line-height: 1.6;
      outline: none;
      transition: border-color var(--transition-fast);
      tab-size: 2;
      white-space: pre;
      overflow-wrap: normal;
      overflow-x: auto;
    }

    .json-textarea:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px var(--color-primary-light);
    }

    .json-textarea::placeholder {
      color: var(--color-text-muted);
      white-space: pre;
    }

    /* Section Labels */
    .workspace-label {
      font-size: 0.8rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-text-secondary);
      margin-bottom: 10px;
    }

    /* Two-Column Textarea Layout */
    .diff-inputs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .diff-input-col {
      display: flex;
      flex-direction: column;
    }

    /* Action Buttons Row */
    .json-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 20px 0;
      align-items: center;
    }

    .json-btn {
      padding: 10px 18px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-surface);
      font-family: var(--font-body);
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--color-text-secondary);
      cursor: pointer;
      transition: all var(--transition-fast);
      white-space: nowrap;
    }

    .json-btn:hover {
      border-color: var(--color-primary-subtle);
      color: var(--color-primary);
      background: var(--color-primary-light);
    }

    .json-btn.active {
      background: var(--color-primary);
      color: white;
      border-color: var(--color-primary);
      box-shadow: 0 2px 8px rgba(59,91,219,0.25);
    }

    /* View Toggle Group */
    .view-toggle {
      display: flex;
      align-items: center;
      gap: 4px;
      margin-left: auto;
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      padding: 3px;
    }

    .view-toggle .json-btn {
      border: none;
      background: transparent;
      padding: 7px 14px;
      font-size: 0.8rem;
      border-radius: calc(var(--radius-sm) - 2px);
    }

    .view-toggle .json-btn:hover {
      background: var(--color-surface);
    }

    .view-toggle .json-btn.active {
      background: var(--color-primary);
      color: white;
      box-shadow: 0 1px 4px rgba(59,91,219,0.2);
    }

    /* Output Section */
    .output-section {
      margin-top: 20px;
      padding-top: 20px;
      border-top: 1px solid var(--color-border-light);
    }

    /* Stats Row */
    .diff-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 10px;
      margin-bottom: 16px;
      font-size: 0.8rem;
      font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    }

    .stat-added {
      color: #16a34a;
      font-weight: 600;
    }

    .stat-removed {
      color: #dc2626;
      font-weight: 600;
    }

    .stat-unchanged {
      color: var(--color-text-muted);
      font-weight: 600;
    }

    /* Diff Output Container */
    .diff-output {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-surface);
      overflow: auto;
      max-height: 600px;
      font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
      font-size: 0.85rem;
      line-height: 1.6;
    }

    .diff-output table {
      width: 100%;
      border-collapse: collapse;
      table-layout: fixed;
    }

    .diff-output td {
      padding: 1px 12px;
      vertical-align: top;
      white-space: pre-wrap;
      word-break: break-all;
    }

    /* Line numbers */
    .diff-line-num {
      width: 50px;
      min-width: 50px;
      max-width: 50px;
      text-align: right;
      color: var(--color-text-muted);
      user-select: none;
      padding-right: 10px;
      font-size: 0.78rem;
      opacity: 0.6;
      border-right: 1px solid var(--color-border-light);
    }

    .diff-line-content {
      padding-left: 12px;
    }

    /* Inline diff line styles */
    .diff-line-removed td {
      background: #fef2f2;
      color: #dc2626;
    }

    .diff-line-removed .diff-line-content {
      border-left: 3px solid #ef4444;
      padding-left: 9px;
    }

    .diff-line-added td {
      background: #f0fdf4;
      color: #16a34a;
    }

    .diff-line-added .diff-line-content {
      border-left: 3px solid #22c55e;
      padding-left: 9px;
    }

    .diff-line-unchanged td {
      background: transparent;
      color: var(--color-text);
    }

    .diff-line-unchanged .diff-line-content {
      border-left: 3px solid transparent;
      padding-left: 9px;
    }

    /* Side-by-side view */
    .diff-sbs {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }

    .diff-sbs-panel {
      overflow: auto;
    }

    .diff-sbs-panel:first-child {
      border-right: 2px solid var(--color-border);
    }

    .diff-sbs-panel table {
      width: 100%;
      border-collapse: collapse;
      table-layout: fixed;
    }

    .diff-sbs-panel td {
      padding: 1px 10px;
      vertical-align: top;
      white-space: pre-wrap;
      word-break: break-all;
    }

    .diff-sbs .diff-line-num {
      width: 40px;
      min-width: 40px;
      max-width: 40px;
    }

    .diff-sbs .diff-line-empty td {
      background: #f9fafb;
      color: transparent;
    }

    /* Empty state */
    .diff-empty {
      text-align: center;
      padding: 40px 20px;
      color: var(--color-text-muted);
      font-family: var(--font-body);
      font-size: 0.9rem;
    }

    /* Action buttons row */
    .json-actions {
      display: flex;
      gap: 12px;
      margin-top: 16px;
      flex-wrap: wrap;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .diff-inputs {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .json-buttons {
        gap: 6px;
      }

      .json-btn {
        padding: 8px 14px;
        font-size: 0.8rem;
      }

      .view-toggle {
        margin-left: 0;
        width: 100%;
        justify-content: center;
        margin-top: 4px;
      }

      .json-textarea {
        min-height: 180px;
        font-size: 0.8rem;
      }

      .diff-sbs {
        grid-template-columns: 1fr;
      }

      .diff-sbs-panel:first-child {
        border-right: none;
        border-bottom: 2px solid var(--color-border);
      }

      .diff-output {
        font-size: 0.78rem;
      }
    }

    @media (max-width: 480px) {
      .json-buttons {
        gap: 6px;
      }

      .json-btn {
        flex: 1 1 calc(50% - 6px);
        text-align: center;
        padding: 10px 8px;
      }

      .json-actions {
        flex-direction: column;
      }

      .json-actions .btn {
        width: 100%;
      }
    }