/* Scoped styles */
  #wf-use-cases {
    --card: #fcfcfd;
    --text: #0f172a;
    --muted: #6b7280;
    --primary: #74295b;
    --primary-rgb: 116, 41, 91;
    --primary-hover: #65224f;
    --gap: 20px;
    --card-height: 360px;
    --shine: linear-gradient(
      to right,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0.4) 50%,
      rgba(255, 255, 255, 0) 100%
    );
    color: var(--text);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
      sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  }
  #wf-use-cases .wfuc-inner {
    max-width: 1120px;
    padding: 20px 0px;
  }

  /* Typography */
  #wf-use-cases .wfuc-title {
    margin: 0 0 6px 0;
    font-size: 15px;
    line-height: 1.35;
    font-weight: 600;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.3px;
  }

  #wf-use-cases .wfuc-description {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
  }

  #wf-use-cases .wfuc-meta {
    font-size: 12px;
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
  }

  #wf-use-cases .wfuc-meta:last-of-type {
    margin-bottom: 0;
  }

  #wf-use-cases .wfuc-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: var(--gap);
    align-items: stretch;
  }

  #wf-use-cases .wfuc-empty {
    grid-column: 1 / -1;
    padding: 22px;
    text-align: center;
    font-size: 13px;
    color: var(--muted);
    border: 1px dashed rgba(148, 163, 184, 0.4);
    border-radius: 12px;
    background: #f8fafc;
  }

  /* Card Styling */
  #wf-use-cases .wfuc-card {
    background: var(--card);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: var(--card-height);
    position: relative;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
    margin-top: 0;
    will-change: transform;
  }

  #wf-use-cases .wfuc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
    border-color: rgba(15, 23, 42, 0.16);
  }
  #wf-use-cases .wfuc-card:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    transition-duration: 0.1s;
  }

  #wf-use-cases .wfuc-card.wfuc-selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.2);
    background: rgba(var(--primary-rgb), 0.02);
  }

  /* Preview Area */
  #wf-use-cases .wfuc-preview {
    height: 160px;
    background: linear-gradient(135deg, #f8fafc 0%, #f3f4f6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
  }
  
  #wf-use-cases .wfuc-preview-icon {
    width: 48px;
    height: 48px;
    color: var(--primary);
    opacity: 0.9;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }

  #wf-use-cases .wfuc-card:hover .wfuc-preview-icon {
    transform: scale(1.08);
  }
  #wf-use-cases .wfuc-card:active .wfuc-preview-icon {
    transform: scale(0.95);
    transition-duration: 0.1s;
  }

  #wf-use-cases .wfuc-content {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  /* ─── Card Footer & Actions ─── */
  #wf-use-cases .wfuc-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid rgba(15, 23, 42, 0.04);
  }

  #wf-use-cases .wfuc-card-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid rgba(5, 150, 105, 0.2);
    color: #059669; /* Excel Green */
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1;
    max-width: 160px;
    cursor: pointer;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }
  #wf-use-cases .wfuc-card-action-btn .wfuc-action-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
  }
  #wf-use-cases .wfuc-card-action-btn svg {
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-card-action-btn:hover {
    background: #ecfdf5;
    border-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.15);
  }
  #wf-use-cases .wfuc-card-action-btn:active {
    transform: scale(0.95);
    transition-duration: 0.1s;
  }

  /* Add Card */
  #wf-use-cases .wfuc-add-card {
    border: 2px dashed rgba(15, 23, 42, 0.15);
    background: #fafbfc;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: var(--card-height);
    transition: border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), background 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border-radius: 12px;
    overflow: hidden;
    will-change: transform;
  }

  #wf-use-cases .wfuc-add-card:hover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.1);
    transform: translateY(-2px);
  }
  #wf-use-cases .wfuc-add-card:active {
    transform: scale(0.98);
    transition-duration: 0.1s;
  }

  #wf-use-cases .wfuc-add-content {
    text-align: center;
    color: var(--muted);
  }

  #wf-use-cases .wfuc-add-icon {
    width: 56px;
    height: 56px;
    background: rgba(var(--primary-rgb), 0.12);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s ease;
  }

  #wf-use-cases .wfuc-add-card:hover .wfuc-add-icon {
    background: rgba(var(--primary-rgb), 0.2);
    transform: scale(1.08);
  }

  /* ─── Modal Overlay ─── */
  #wf-use-cases .wfuc-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-modal.wfuc-open {
    opacity: 1;
    pointer-events: auto;
  }
  #wf-use-cases .wfuc-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(6px);
  }

  /* ─── Modal Shell ─── */
  #wf-use-cases .wfuc-modal-content {
    position: relative;
    width: 90%;
    max-width: 480px;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 24px 64px rgba(15, 23, 42, 0.18);
    transform: translateY(16px) scale(0.96);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    overflow: hidden;
    will-change: transform;
  }
  #wf-use-cases .wfuc-modal.wfuc-open .wfuc-modal-content {
    transform: translateY(0) scale(1);
  }

  /* ─── Close Button (floating pill) ─── */
  #wf-use-cases .wfuc-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 2;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.05);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }
  #wf-use-cases .wfuc-modal-close:hover {
    background: rgba(15, 23, 42, 0.1);
    color: var(--text);
    transform: scale(1.08);
  }
  #wf-use-cases .wfuc-modal-close:active {
    transform: scale(0.92);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-modal-close svg { width: 16px; height: 16px; }

  /* ─── Modal Body ─── */
  #wf-use-cases .wfuc-modal-body {
    padding: 36px 32px 32px;
    overflow-y: auto;
  }
  #wf-use-cases #wfuc-step-4.wfuc-modal-body {
    padding: 44px 40px 36px;
  }

  /* ─── Section Title Inside Modal ─── */
  #wf-use-cases .wfuc-modal-heading {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.4px;
    margin: 0 0 4px;
    color: var(--text);
  }
  #wf-use-cases .wfuc-modal-subtext {
    font-size: 13.5px;
    color: #94a3b8;
    margin: 0 0 28px;
    line-height: 1.45;
  }

  /* ─── Drop Zone (hero) ─── */
  #wf-use-cases .wfuc-dropzone {
    border: 1.5px dashed rgba(var(--primary-rgb), 0.3);
    border-radius: 14px;
    padding: 44px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), background 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    background: rgba(var(--primary-rgb), 0.02);
    position: relative;
    will-change: transform;
  }
  #wf-use-cases .wfuc-dropzone:hover,
  #wf-use-cases .wfuc-dropzone.wfuc-dragover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
    transform: scale(1.005);
  }
  #wf-use-cases .wfuc-dropzone:active {
    transform: scale(0.99);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-dropzone-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(var(--primary-rgb), 0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 14px;
  }
  #wf-use-cases .wfuc-dropzone-icon svg { width: 22px; height: 22px; }
  #wf-use-cases .wfuc-dropzone-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
  }
  #wf-use-cases .wfuc-dropzone-hint {
    font-size: 12.5px;
    color: #94a3b8;
  }
  #wf-use-cases .wfuc-dropzone-hint a {
    color: var(--primary);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
  }
  #wf-use-cases .wfuc-dropzone-hint a:hover { text-decoration: underline; }

  /* Collapsed file chip (replaces drop zone when file selected) */
  #wf-use-cases .wfuc-file-chip {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: rgba(var(--primary-rgb), 0.04);
    border: 1px solid rgba(var(--primary-rgb), 0.15);
    border-radius: 12px;
    transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-file-chip-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(var(--primary-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-file-chip-icon svg { width: 18px; height: 18px; }
  #wf-use-cases .wfuc-file-chip-info { flex: 1; min-width: 0; }
  #wf-use-cases .wfuc-file-chip-name {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  #wf-use-cases .wfuc-file-chip-size {
    font-size: 12px;
    color: #94a3b8;
    margin-top: 1px;
  }
  #wf-use-cases .wfuc-file-chip-remove {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-file-chip-remove:hover {
    background: rgba(239, 68, 68, 0.08);
    color: #ef4444;
    transform: scale(1.1);
  }
  #wf-use-cases .wfuc-file-chip-remove:active {
    transform: scale(0.88);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-file-chip-remove svg { width: 15px; height: 15px; }

  /* ─── Form Fields (revealed after file) ─── */
  #wf-use-cases .wfuc-fields {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease, margin 0.3s ease;
    margin-top: 0;
  }
  #wf-use-cases .wfuc-fields.wfuc-visible {
    max-height: 500px;
    opacity: 1;
    margin-top: 24px;
  }

  #wf-use-cases .wfuc-field {
    margin-bottom: 18px;
  }
  #wf-use-cases .wfuc-field:last-child {
    margin-bottom: 0;
  }
  #wf-use-cases .wfuc-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: #475569;
    letter-spacing: -0.1px;
  }
  #wf-use-cases .wfuc-input,
  #wf-use-cases .wfuc-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
    background: #fafbfc;
  }
  #wf-use-cases .wfuc-textarea {
    min-height: 80px;
    resize: vertical;
    line-height: 1.5;
  }
  #wf-use-cases .wfuc-input::placeholder,
  #wf-use-cases .wfuc-textarea::placeholder {
    color: #c1c9d4;
  }
  #wf-use-cases .wfuc-input:focus,
  #wf-use-cases .wfuc-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.08);
    background: #fff;
  }

  /* ─── Toggle row ─── */
  #wf-use-cases .wfuc-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    background: #fafbfc;
    border: 1px solid rgba(15, 23, 42, 0.06);
    cursor: pointer;
    transition: background 0.15s;
    user-select: none;
  }
  #wf-use-cases .wfuc-toggle-row:hover {
    background: #f4f5f7;
  }
  #wf-use-cases .wfuc-toggle-text {
    font-size: 13.5px;
    color: #475569;
    line-height: 1.35;
  }
  /* iOS-style toggle */
  #wf-use-cases .wfuc-toggle {
    position: relative;
    width: 40px;
    height: 22px;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
  }
  #wf-use-cases .wfuc-toggle-track {
    position: absolute;
    inset: 0;
    background: #d4d8e0;
    border-radius: 11px;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
  }
  #wf-use-cases .wfuc-toggle-track::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }
  #wf-use-cases .wfuc-toggle input:checked + .wfuc-toggle-track {
    background: var(--primary);
  }
  #wf-use-cases .wfuc-toggle input:checked + .wfuc-toggle-track::after {
    transform: translateX(18px);
  }

  #wf-use-cases .wfuc-icon-style-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
  }

  #wf-use-cases .wfuc-icon-style-option {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 10px;
    background: #fafbfc;
    cursor: pointer;
    font-size: 13px;
    color: #475569;
    transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
  }

  #wf-use-cases .wfuc-icon-style-option:hover {
    border-color: rgba(var(--primary-rgb), 0.5);
    background: rgba(var(--primary-rgb), 0.04);
  }

  #wf-use-cases .wfuc-icon-style-option input {
    margin: 0;
    accent-color: var(--primary);
  }

  #wf-use-cases .wfuc-icon-style-option:has(input:checked) {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.09);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.08);
  }

  /* ─── Submit Button (full-width) ─── */
  #wf-use-cases .wfuc-submit {
    width: 100%;
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 14.5px;
    font-weight: 600;
    font-family: inherit;
    letter-spacing: -0.2px;
    cursor: pointer;
    border: none;
    background: var(--primary);
    color: #fff;
    margin-top: 24px;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    will-change: transform;
  }
  #wf-use-cases .wfuc-submit:hover:not(:disabled) {
    background: var(--primary-hover);
    box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.3);
    transform: translateY(-1px);
  }
  #wf-use-cases .wfuc-submit:active:not(:disabled) {
    transform: scale(0.97);
    box-shadow: 0 2px 6px rgba(var(--primary-rgb), 0.2);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-submit:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }

  /* ─── Delete Modal Specifics ─── */
  #wf-use-cases .wfuc-delete-body {
    text-align: center;
    padding: 40px 32px 32px;
  }
  #wf-use-cases .wfuc-delete-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: #fef2f2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ef4444;
    margin-bottom: 18px;
  }
  #wf-use-cases .wfuc-delete-icon svg { width: 24px; height: 24px; }
  #wf-use-cases .wfuc-delete-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 6px;
  }
  #wf-use-cases .wfuc-delete-desc {
    font-size: 13.5px;
    color: #64748b;
    margin: 0 0 28px;
    line-height: 1.5;
  }
  #wf-use-cases .wfuc-delete-actions {
    display: flex;
    gap: 10px;
  }
  #wf-use-cases .wfuc-delete-actions button {
    flex: 1;
    padding: 11px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border: none;
    will-change: transform;
  }
  #wf-use-cases .wfuc-btn-cancel {
    background: #f1f5f9;
    color: #475569;
  }
  #wf-use-cases .wfuc-btn-cancel:hover {
    background: #e2e8f0;
  }
  #wf-use-cases .wfuc-btn-cancel:active {
    transform: scale(0.97);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-btn-danger {
    background: #ef4444;
    color: #fff;
  }
  #wf-use-cases .wfuc-btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
  }
  #wf-use-cases .wfuc-btn-danger:active {
    transform: scale(0.97);
    transition-duration: 0.1s;
  }

  /* ─── Spinner ─── */
  #wf-use-cases .wfuc-spinner {
    width: 12px;
    height: 12px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: wfuc-spin 0.75s linear infinite;
    display: inline-block;
  }
  @keyframes wfuc-spin { to { transform: rotate(360deg); } }
  
  @keyframes wfuc-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2); }
    100% { transform: scale(1); }
  }

  /* Lucide defaults */
  #wf-use-cases svg.lucide {
    width: 20px;
    height: 20px;
    stroke-width: 2;
  }

  /* Menu Styling */
  #wf-use-cases .wfuc-menu-btn {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }
  
  #wf-use-cases .wfuc-card:hover .wfuc-menu-btn,
  #wf-use-cases .wfuc-menu-btn.wfuc-active {
    color: var(--text);
  }
  
  #wf-use-cases .wfuc-menu-btn:hover {
    background: rgba(15, 23, 42, 0.05);
    color: var(--text);
  }
  #wf-use-cases .wfuc-menu-btn:active {
    transform: scale(0.88);
    transition-duration: 0.1s;
  }

  #wf-use-cases .wfuc-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: white;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12), 0 2px 6px rgba(15, 23, 42, 0.06);
    min-width: 170px;
    z-index: 20;
    display: none;
    padding: 4px;
    animation: wfuc-fade-in 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }
  
  #wf-use-cases .wfuc-dropdown-menu.wfuc-show {
    display: block;
  }
  
  @keyframes wfuc-fade-in {
    from { opacity: 0; transform: translateY(-6px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  
  #wf-use-cases .wfuc-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    font-size: 13px;
    color: #ef4444; 
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    font-family: inherit;
  }
  
  #wf-use-cases .wfuc-menu-item:hover {
    background: #fef2f2;
  }
  #wf-use-cases .wfuc-menu-item:active {
    transform: scale(0.97);
    transition-duration: 0.1s;
  }

  /* Excel download button - green accent */
  #wf-use-cases .wfuc-menu-item-excel {
    color: #059669;
    font-weight: 500;
  }
  #wf-use-cases .wfuc-menu-item-excel:hover {
    background: #ecfdf5;
    color: #047857;
  }
  #wf-use-cases .wfuc-menu-excel-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-menu-item-excel + .wfuc-menu-item {
    border-top: 1px solid rgba(15, 23, 42, 0.06);
    margin-top: 2px;
    padding-top: 10px;
  }

  /* ─── Multi-Step Modal ─── */
  #wf-use-cases .wfuc-modal-step { display: none; }
  #wf-use-cases .wfuc-modal-step.wfuc-active-step { display: block; }
  #wf-use-cases .wfuc-modal-content.wfuc-wide { max-width: 880px; }

  /* ─── Step 3 Overrides: Utilitarian Luxury ─── */
  #wf-use-cases #wfuc-step-4 .wfuc-modal-heading {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #1a1714;
    margin-bottom: 2px;
  }
  #wf-use-cases #wfuc-step-4 .wfuc-modal-subtext {
    font-size: 14px;
    color: #8a8279;
    margin-bottom: 32px;
    line-height: 1.5;
  }
  #wf-use-cases #wfuc-step-4 .wfuc-submit {
    margin-top: 8px;
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.2px;
    background: #1a1714;
    color: #faf8f5;
    border: none;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }
  #wf-use-cases #wfuc-step-4 .wfuc-submit:hover:not(:disabled) {
    background: #2c2520;
    box-shadow: 0 6px 20px rgba(26, 23, 20, 0.18);
    transform: translateY(-1px);
  }
  #wf-use-cases #wfuc-step-4 .wfuc-submit:active:not(:disabled) {
    transform: scale(0.97);
    box-shadow: 0 2px 8px rgba(26, 23, 20, 0.12);
    transition-duration: 0.1s;
  }
  #wf-use-cases #wfuc-step-4 .wfuc-submit:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: #b5afa8;
  }

  /* ─── Step 2: Processing ─── */
  #wf-use-cases .wfuc-processing {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    text-align: center;
  }
  #wf-use-cases .wfuc-processing-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(var(--primary-rgb), 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
  }
  #wf-use-cases .wfuc-processing-spinner-lg {
    width: 28px;
    height: 28px;
    border: 3px solid var(--primary);
    border-right-color: transparent;
    border-radius: 50%;
    animation: wfuc-spin 0.75s linear infinite;
  }
  #wf-use-cases .wfuc-processing-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 6px;
  }
  #wf-use-cases .wfuc-processing-desc {
    font-size: 13.5px;
    color: #94a3b8;
    line-height: 1.55;
    margin: 0;
  }

  /* ══════════════════════════════════════════════════════════════
     Step 3: User Input Variables — iOS-like Builder
     Purple accent · Card rows · Live pill preview
     ══════════════════════════════════════════════════════════════ */

  #wf-use-cases #wfuc-step-3 .wfuc-modal-heading {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.4px;
    color: #1a1714;
    margin-bottom: 2px;
  }
  #wf-use-cases #wfuc-step-3 .wfuc-modal-subtext {
    font-size: 13.5px;
    color: #8a8279;
    margin-bottom: 24px;
    line-height: 1.5;
  }

  /* ─── Entry list ─── */
  #wf-use-cases .wfuc-pv-entries {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
    min-height: 4px;
  }

  /* ─── Single entry card ─── */
  #wf-use-cases .wfuc-pv-entry {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 14px 14px 16px;
    background: #f7f5f2;
    border: 1px solid #e8e3dc;
    border-radius: 12px;
    animation: wfuc-slide-down 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-pv-entry:hover {
    border-color: #c4bdb4;
    box-shadow: 0 2px 8px rgba(26, 23, 20, 0.04);
  }
  #wf-use-cases .wfuc-pv-entry:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
    background: #fff;
  }

  /* ─── Order number badge ─── */
  #wf-use-cases .wfuc-pv-order {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 9px;
    letter-spacing: 0;
  }

  /* ─── Fields wrapper inside entry ─── */
  #wf-use-cases .wfuc-pv-fields {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
  }
  #wf-use-cases .wfuc-pv-fields-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
  }

  /* ─── Prefix text input ─── */
  #wf-use-cases .wfuc-pv-prefix {
    flex: 1;
    min-width: 120px;
    padding: 9px 12px;
    border: 1.5px solid #e0dbd4;
    border-radius: 10px;
    font-size: 13px;
    font-family: inherit;
    color: #2c2520;
    background: #fff;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    box-sizing: border-box;
  }
  #wf-use-cases .wfuc-pv-prefix::placeholder { color: #c4bdb4; }
  #wf-use-cases .wfuc-pv-prefix:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
  }

  /* ─── Variable type dropdown ─── */
  #wf-use-cases .wfuc-pv-var-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 9px 28px 9px 12px;
    border: 1.5px solid rgba(var(--primary-rgb), 0.25);
    border-radius: 10px;
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 600;
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='%2374295b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") right 9px center no-repeat;
    cursor: pointer;
    min-width: 130px;
    flex-shrink: 0;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
  }
  #wf-use-cases .wfuc-pv-var-select:hover {
    border-color: var(--primary);
    background-color: rgba(var(--primary-rgb), 0.08);
  }
  #wf-use-cases .wfuc-pv-var-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.14);
  }

  /* ─── Custom variable name input ─── */
  #wf-use-cases .wfuc-pv-custom-name {
    width: 100%;
    padding: 8px 12px;
    border: 1.5px dashed rgba(var(--primary-rgb), 0.3);
    border-radius: 10px;
    font-size: 12.5px;
    font-family: inherit;
    color: #2c2520;
    background: rgba(var(--primary-rgb), 0.02);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    box-sizing: border-box;
  }
  #wf-use-cases .wfuc-pv-custom-name::placeholder { color: #c4bdb4; }
  #wf-use-cases .wfuc-pv-custom-name:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
    background: #fff;
  }

  /* ─── Delete entry button ─── */
  #wf-use-cases .wfuc-pv-delete {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: #c4bdb4;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 5px;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    will-change: transform;
  }
  #wf-use-cases .wfuc-pv-delete:hover {
    background: rgba(239, 68, 68, 0.08);
    color: #ef4444;
    transform: scale(1.12);
  }
  #wf-use-cases .wfuc-pv-delete:active {
    transform: scale(0.9);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-pv-delete svg { width: 15px; height: 15px; }

  /* ─── "Add prompt variable" button ─── */
  #wf-use-cases .wfuc-pv-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1.5px dashed rgba(var(--primary-rgb), 0.32);
    border-radius: 12px;
    background: rgba(var(--primary-rgb), 0.02);
    color: var(--primary);
    font-size: 13px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 20px;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
  }
  #wf-use-cases .wfuc-pv-add-btn:hover {
    background: rgba(var(--primary-rgb), 0.07);
    border-color: var(--primary);
    transform: translateY(-1px);
  }
  #wf-use-cases .wfuc-pv-add-btn:active {
    transform: scale(0.97);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-pv-add-btn svg { width: 15px; height: 15px; }

  /* ─── Live preview box ─── */
  #wf-use-cases .wfuc-pv-preview {
    padding: 14px 16px;
    background: #faf8f5;
    border: 1px solid #e8e3dc;
    border-radius: 12px;
    margin-bottom: 24px;
    animation: wfuc-slide-down 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }
  #wf-use-cases .wfuc-pv-preview-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.9px;
    color: #8a8279;
    margin-bottom: 10px;
  }
  #wf-use-cases .wfuc-pv-preview-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  #wf-use-cases .wfuc-pv-preview-item {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 13.5px;
    color: #2c2520;
    line-height: 1.6;
  }
  #wf-use-cases .wfuc-pv-preview-prefix {
    color: #5c564e;
  }
  #wf-use-cases .wfuc-pv-pill {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid rgba(var(--primary-rgb), 0.15);
  }

  /* ─── Action row (Save + Skip) ─── */
  #wf-use-cases .wfuc-pv-actions {
    display: flex;
    align-items: center;
    gap: 18px;
  }
  #wf-use-cases .wfuc-pv-actions .wfuc-submit {
    flex: 1;
    margin-top: 0;
  }
  #wf-use-cases .wfuc-pv-skip {
    background: none;
    border: none;
    color: #8a8279;
    font-size: 13px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    padding: 8px 4px;
    white-space: nowrap;
    transition: color 0.2s ease;
    text-decoration: underline;
    text-decoration-color: transparent;
    text-underline-offset: 3px;
  }
  #wf-use-cases .wfuc-pv-skip:hover {
    color: var(--primary);
    text-decoration-color: var(--primary);
  }

  /* ══════════════════════════════════════════════════════════════
     Step 4: Data Source Config — Utilitarian Luxury
     Warm neutrals · Generous spacing · Confident structure
     ══════════════════════════════════════════════════════════════ */

  /* ─── "Text based on user input" sub-panel ─── */
  #wf-use-cases .wfuc-ds-userinput-wrap {
    padding: 8px 18px 12px 40px;
    animation: wfuc-slide-down 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }
  #wf-use-cases .wfuc-ds-userinput-select {
    appearance: none;
    -webkit-appearance: none;
    width: 100%;
    padding: 8px 34px 8px 12px;
    border: 1.5px solid #e0dbd4;
    border-radius: 10px;
    font-size: 12px;
    font-family: inherit;
    font-weight: 500;
    color: #3d3832;
    background: #faf8f5 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8279' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") right 10px center no-repeat;
    cursor: pointer;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
    box-sizing: border-box;
    margin-bottom: 8px;
  }
  #wf-use-cases .wfuc-ds-userinput-select:hover {
    border-color: #c8c1b9;
    background-color: #fffdfb;
  }
  #wf-use-cases .wfuc-ds-userinput-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
    background-color: #fff;
  }
  #wf-use-cases .wfuc-ds-userinput-select.wfuc-configured {
    border-color: rgba(61, 139, 94, 0.4);
    background-color: rgba(61, 139, 94, 0.03);
    border-style: solid;
  }
  #wf-use-cases .wfuc-ds-userinput-none-msg {
    font-size: 12px;
    color: #94a3b8;
    font-style: italic;
    padding: 4px 0 6px;
    line-height: 1.45;
  }
  #wf-use-cases .wfuc-ds-userinput-quick-add {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11.5px;
    color: var(--primary);
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    padding: 4px 0;
    transition: opacity 0.2s ease;
    text-align: left;
  }
  #wf-use-cases .wfuc-ds-userinput-quick-add:hover { opacity: 0.7; }
  #wf-use-cases .wfuc-ds-userinput-quick-add svg { width: 12px; height: 12px; flex-shrink: 0; }

  /* Inline mini-form */
  #wf-use-cases .wfuc-ds-inline-add {
    margin-top: 8px;
    padding: 10px 12px;
    background: #faf8f5;
    border: 1px solid #e8e3dc;
    border-radius: 10px;
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
    animation: wfuc-slide-down 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }
  #wf-use-cases .wfuc-ds-inline-add .wfuc-pv-prefix {
    font-size: 12px;
    padding: 7px 10px;
    min-width: 100px;
    flex: 1;
  }
  #wf-use-cases .wfuc-ds-inline-add .wfuc-pv-var-select {
    font-size: 12px;
    padding: 7px 24px 7px 10px;
    min-width: 110px;
  }
  #wf-use-cases .wfuc-ds-inline-add-save {
    padding: 7px 14px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-ds-inline-add-save:hover { background: var(--primary-hover); }
  #wf-use-cases .wfuc-ds-inline-add-save:active { transform: scale(0.96); transition-duration: 0.1s; }
  #wf-use-cases .wfuc-ds-inline-add-save:disabled { opacity: 0.5; cursor: not-allowed; }

  /* ─── Slide Tabs ─── */
  #wf-use-cases .wfuc-ds-slide-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    overflow-x: auto;
    padding: 2px 2px 8px;
    scrollbar-width: thin;
  }
  #wf-use-cases .wfuc-ds-slide-tabs::-webkit-scrollbar {
    height: 3px;
  }
  #wf-use-cases .wfuc-ds-slide-tabs::-webkit-scrollbar-thumb {
    background: #d6d0c8;
    border-radius: 3px;
  }
  #wf-use-cases .wfuc-ds-slide-tab {
    flex-shrink: 0;
    position: relative;
    width: 100px;
    height: 64px;
    border-radius: 10px;
    border: 2px solid #e8e3dc;
    background: #f7f5f2;
    cursor: pointer;
    overflow: hidden;
    transition: border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0;
    will-change: transform;
  }
  #wf-use-cases .wfuc-ds-slide-tab:hover {
    border-color: #c4bdb4;
    box-shadow: 0 3px 12px rgba(26, 23, 20, 0.06);
    transform: translateY(-2px);
  }
  #wf-use-cases .wfuc-ds-slide-tab:active {
    transform: scale(0.96);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-ds-slide-tab.wfuc-tab-active {
    border-color: #1a1714;
    box-shadow: 0 0 0 1px #1a1714, 0 4px 12px rgba(26, 23, 20, 0.1);
  }
  #wf-use-cases .wfuc-ds-slide-tab.wfuc-tab-complete {
    border-color: #3d8b5e;
  }
  #wf-use-cases .wfuc-ds-slide-tab img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }
  #wf-use-cases .wfuc-ds-tab-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(26, 23, 20, 0.72);
    color: #f7f5f2;
    font-size: 10px;
    font-weight: 600;
    text-align: center;
    padding: 2px 0;
    backdrop-filter: blur(3px);
    letter-spacing: 0.5px;
    text-transform: uppercase;
  }
  #wf-use-cases .wfuc-ds-tab-check {
    position: absolute;
    top: 3px;
    right: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #3d8b5e;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    z-index: 1;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  }
  #wf-use-cases .wfuc-ds-tab-check svg {
    width: 9px;
    height: 9px;
  }
  #wf-use-cases .wfuc-ds-tab-count {
    position: absolute;
    top: 3px;
    right: 3px;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    background: #c4873b;
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    z-index: 1;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  }

  /* ─── Slide Preview ─── */
  #wf-use-cases .wfuc-ds-slide-preview {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e8e3dc;
    background: #f2eeea;
    margin-bottom: 20px;
    position: relative;
    max-height: 220px;
  }
  #wf-use-cases .wfuc-ds-slide-preview img {
    width: 100%;
    display: block;
    max-height: 220px;
    object-fit: contain;
  }
  #wf-use-cases .wfuc-ds-slide-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 10px 16px;
    background: linear-gradient(transparent, rgba(26, 23, 20, 0.8));
    color: #f7f5f2;
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.1px;
  }

  /* ─── Quick Apply Bar ─── */
  #wf-use-cases .wfuc-ds-quick-apply {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: 10px;
    background: #f7f5f2;
    border: 1px solid #e8e3dc;
    margin-bottom: 20px;
  }
  #wf-use-cases .wfuc-ds-quick-label {
    font-size: 11px;
    color: #8a8279;
    white-space: nowrap;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
  }
  #wf-use-cases .wfuc-ds-quick-btns {
    display: flex;
    gap: 6px;
    flex: 1;
    flex-wrap: wrap;
  }
  #wf-use-cases .wfuc-ds-quick-btn {
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid #ddd7cf;
    background: #fff;
    font-size: 12px;
    font-family: inherit;
    font-weight: 500;
    color: #5c564e;
    cursor: pointer;
    transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s ease, background 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
    will-change: transform;
  }
  #wf-use-cases .wfuc-ds-quick-btn:hover {
    border-color: #1a1714;
    color: #1a1714;
    background: #faf8f5;
    box-shadow: 0 1px 4px rgba(26, 23, 20, 0.06);
    transform: translateY(-1px);
  }
  #wf-use-cases .wfuc-ds-quick-btn:active {
    transform: scale(0.96);
    transition-duration: 0.1s;
  }

  /* ─── Section Groups (Charts & Tables / Texts) ─── */
  #wf-use-cases .wfuc-ds-section {
    margin-bottom: 16px;
    border: 1px solid #e8e3dc;
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
  }
  #wf-use-cases .wfuc-ds-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: #f7f5f2;
    cursor: pointer;
    user-select: none;
    border: none;
    width: 100%;
    font-family: inherit;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-ds-section-header:hover {
    background: #f0ece7;
  }
  #wf-use-cases .wfuc-ds-section-header:active {
    background: #ebe6df;
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-ds-section-title {
    font-size: 13px;
    font-weight: 700;
    color: #1a1714;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.1px;
  }
  #wf-use-cases .wfuc-ds-section-title svg {
    width: 15px;
    height: 15px;
    color: #8a8279;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-ds-section-count {
    font-size: 11px;
    font-weight: 600;
    color: #8a8279;
    background: rgba(138, 130, 121, 0.12);
    padding: 2px 9px;
    border-radius: 10px;
  }
  #wf-use-cases .wfuc-ds-section-toggle {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #a09890;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-ds-section.wfuc-collapsed .wfuc-ds-section-toggle {
    transform: rotate(-90deg);
  }
  #wf-use-cases .wfuc-ds-section-body {
    max-height: 600px;
    overflow-y: auto;
    transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-ds-section.wfuc-collapsed .wfuc-ds-section-body {
    max-height: 0;
    overflow: hidden;
  }

  /* ─── Element Row ─── */
  #wf-use-cases .wfuc-ds-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 18px;
    border-top: 1px solid #f0ece7;
    transition: background 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    min-height: 50px;
  }
  #wf-use-cases .wfuc-ds-row:first-child {
    border-top: none;
  }
  #wf-use-cases .wfuc-ds-row:hover {
    background: #faf8f5;
  }
  #wf-use-cases .wfuc-ds-row-icon {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-ds-row-icon svg {
    width: 14px;
    height: 14px;
  }
  #wf-use-cases .wfuc-ds-row-icon.wfuc-icon-chart {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--primary);
  }
  #wf-use-cases .wfuc-ds-row-icon.wfuc-icon-table {
    background: rgba(14, 165, 233, 0.08);
    color: #0284c7;
  }
  #wf-use-cases .wfuc-ds-row-icon.wfuc-icon-image {
    background: rgba(22, 163, 74, 0.08);
    color: #16a34a;
  }
  #wf-use-cases .wfuc-ds-row-icon.wfuc-icon-text {
    background: rgba(217, 119, 6, 0.08);
    color: #d97706;
  }
  #wf-use-cases .wfuc-ds-row-name {
    flex: 1;
    font-size: 13.5px;
    font-weight: 500;
    color: #2c2520;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    line-height: 1.35;
  }
  #wf-use-cases .wfuc-ds-row-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
  }

  /* ─── Source Dropdown ─── */
  #wf-use-cases .wfuc-ds-select-wrap {
    position: relative;
  }
  #wf-use-cases .wfuc-ds-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 8px 34px 8px 12px;
    border: 1.5px dashed #c4bdb4;
    border-radius: 10px;
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 500;
    color: #6b625a;
    background: #faf9f7 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8279' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") right 10px center no-repeat;
    cursor: pointer;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, transform 0.2s ease, border-style 0.25s ease;
    min-width: 185px;
    line-height: 1.4;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
  }
  #wf-use-cases .wfuc-ds-select:hover {
    border-color: #a09489;
    border-style: solid;
    background-color: #fffcfa;
  }
  #wf-use-cases .wfuc-ds-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
    background-color: #fff;
  }
  #wf-use-cases .wfuc-ds-select.wfuc-configured {
    border-color: rgba(61, 139, 94, 0.4);
    background-color: rgba(61, 139, 94, 0.03);
  }
  #wf-use-cases .wfuc-ds-select.wfuc-default {
    border-color: rgba(var(--primary-rgb), 0.3);
    background-color: rgba(var(--primary-rgb), 0.05);
    font-style: italic;
  }

    /* ─── Inline Sub-panels (Reference Select & Custom Prompt) ─── */
   #wf-use-cases .wfuc-ds-gen-wrap {
     margin-top: 2px;
     padding: 8px 18px 12px 40px;
     animation: wfuc-slide-down 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
     transform-origin: top center;
   }
    @keyframes wfuc-slide-down {
      from { opacity: 0; transform: translateY(-8px) scale(0.98); }
      to { opacity: 1; transform: translateY(0) scale(1); }
    }
  
    #wf-use-cases .wfuc-ds-context-hint {
      font-size: 12px;
      color: #94a3b8;
      font-style: italic;
      padding: 4px 0;
      line-height: 1.4;
    }
    #wf-use-cases .wfuc-ds-ai-prompt-note {
      margin: 0 0 6px;
      font-size: 11.5px;
      font-weight: 500;
      color: #6b625a;
      line-height: 1.4;
    }
    
    #wf-use-cases .wfuc-ds-gen-prompt-wrap {
     margin-top: 8px;
     animation: wfuc-slide-down 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
   }

     #wf-use-cases .wfuc-ds-ai-prompt-note {
       margin: 0 0 6px;
       font-size: 12px;
       color: #8a8279;
     }

   #wf-use-cases .wfuc-ds-gen-prompt {
     width: 100%;
     padding: 10px 12px;
     border: 1.5px solid #e0dbd4;
     border-radius: 10px;
     font-size: 12.5px;
     font-family: inherit;
     font-weight: 400;
     color: #2c2520;
     background: #faf8f5;
     resize: vertical;
     min-height: 64px;
     line-height: 1.5;
     transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
     box-sizing: border-box;
   }
   #wf-use-cases .wfuc-ds-gen-prompt::placeholder {
     color: #c4bdb4;
   }
   #wf-use-cases .wfuc-ds-gen-prompt:hover {
     border-color: #c8c1b9;
     background-color: #fffdfb;
   }
   #wf-use-cases .wfuc-ds-gen-prompt:focus {
     outline: none;
     border-color: var(--primary);
     box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
     background-color: #fff;
   }


   #wf-use-cases .wfuc-ds-gen-wrap .wfuc-ds-ref-select {
     appearance: none;
     -webkit-appearance: none;
     width: 100%;
     padding: 8px 34px 8px 12px;
     border: 1.5px solid #e0dbd4;
     border-radius: 10px;
     font-size: 12px;
     font-family: inherit;
     font-weight: 500;
     color: #3d3832;
     background: #faf8f5 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8279' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") right 10px center no-repeat;
     cursor: pointer;
     transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
     box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
     box-sizing: border-box;
   }
   #wf-use-cases .wfuc-ds-gen-wrap .wfuc-ds-ref-select:hover {
     border-color: #c8c1b9;
     background-color: #fffdfb;
   }
   #wf-use-cases .wfuc-ds-gen-wrap .wfuc-ds-ref-select:focus {
     outline: none;
     border-color: var(--primary);
     box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
     background-color: #fff;
   }
   #wf-use-cases .wfuc-ds-gen-wrap .wfuc-ds-ref-select.wfuc-configured {
     border-color: rgba(61, 139, 94, 0.4);
     background-color: rgba(61, 139, 94, 0.03);
   }

  /* ─── Progress Bar ─── */
  #wf-use-cases .wfuc-ds-progress {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 0 12px;
    margin-top: 4px;
  }
  #wf-use-cases .wfuc-ds-progress-bar {
    flex: 1;
    height: 6px;
    background: #ebe6df;
    border-radius: 3px;
    overflow: hidden;
  }
  #wf-use-cases .wfuc-ds-progress-fill {
    height: 100%;
    background: #1a1714;
    border-radius: 3px;
    transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  }
  #wf-use-cases .wfuc-ds-progress-fill.wfuc-complete {
    background: #3d8b5e;
  }
  #wf-use-cases .wfuc-ds-progress-text {
    font-size: 12.5px;
    color: #8a8279;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: -0.1px;
  }

  /* ─── Slide Content Scrollable Area ─── */
  #wf-use-cases .wfuc-ds-slide-content {
    max-height: 440px;
    overflow-y: auto;
    padding-right: 6px;
    scrollbar-width: thin;
    scrollbar-color: rgba(var(--primary-rgb), 0.38) transparent;
  }
  #wf-use-cases .wfuc-ds-slide-content::-webkit-scrollbar {
    width: 8px;
  }
  #wf-use-cases .wfuc-ds-slide-content::-webkit-scrollbar-thumb {
    background: rgba(var(--primary-rgb), 0.28);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  #wf-use-cases .wfuc-ds-slide-content::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--primary-rgb), 0.5);
    background-clip: padding-box;
  }

  #wf-use-cases .wfuc-ds-section-body {
    scrollbar-width: thin;
    scrollbar-color: rgba(var(--primary-rgb), 0.32) transparent;
  }
  #wf-use-cases .wfuc-ds-section-body::-webkit-scrollbar {
    width: 8px;
  }
  #wf-use-cases .wfuc-ds-section-body::-webkit-scrollbar-thumb {
    background: rgba(var(--primary-rgb), 0.24);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  #wf-use-cases .wfuc-ds-section-body::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--primary-rgb), 0.42);
    background-clip: padding-box;
  }

  /* ─── Clickable Variable Pill Buttons (Step 4 user_input) ─── */
  #wf-use-cases .wfuc-pv-pill-btn {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid rgba(var(--primary-rgb), 0.15);
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
  }
  #wf-use-cases .wfuc-pv-pill-btn:hover {
    background: rgba(var(--primary-rgb), 0.18);
    border-color: rgba(var(--primary-rgb), 0.3);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(var(--primary-rgb), 0.12);
  }
  #wf-use-cases .wfuc-pv-pill-btn:active {
    transform: scale(0.95);
    transition-duration: 0.1s;
  }

  #wf-use-cases .wfuc-ds-userinput-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
  }

  #wf-use-cases .wfuc-ds-userinput-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #8a8279;
    margin-bottom: 6px;
  }

  /* ─── Segmented Inline Builder (user_input) ─── */
  #wf-use-cases .wfuc-seg-editor-wrap {
    position: relative;
    margin-bottom: 10px;
  }

  #wf-use-cases .wfuc-seg-editor {
    min-height: 120px;
    padding: 8px 12px;
    border: 1.5px solid #e0dbd4;
    border-radius: 10px;
    font-size: 12.5px;
    font-family: inherit;
    font-weight: 400;
    color: #2c2520;
    background: #faf8f5;
    line-height: 1.6;
    outline: none;
    cursor: text;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
    box-sizing: border-box;
  }
  #wf-use-cases .wfuc-seg-editor:empty::before {
    content: attr(data-placeholder);
    color: #c4bdb4;
    pointer-events: none;
  }
  #wf-use-cases .wfuc-seg-editor:hover {
    border-color: #c8c1b9;
    background-color: #fffdfb;
  }
  #wf-use-cases .wfuc-seg-editor:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
    background-color: #fff;
  }

  /* Variable pill inside contenteditable */
  #wf-use-cases .wfuc-seg-pill {
    display: inline-flex;
    align-items: center;
    padding: 1px 8px;
    margin: 0 2px;
    background: rgba(var(--primary-rgb), 0.12);
    color: var(--primary);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid rgba(var(--primary-rgb), 0.18);
    user-select: all;
    cursor: default;
    vertical-align: baseline;
    line-height: 1.5;
  }

  /* ─── Autocomplete Dropdown (segmented builder) ─── */
  #wf-use-cases .wfuc-autocomplete-menu {
    position: absolute;
    z-index: 100;
    background: #ffffff;
    border: 1px solid #e0dbd4;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    max-height: 200px;
    overflow-y: auto;
    min-width: 180px;
    padding: 4px;
    display: none;
  }

  #wf-use-cases .wfuc-autocomplete-item {
    padding: 8px 12px;
    font-size: 12px;
    color: #2c2520;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.15s ease;
  }

  #wf-use-cases .wfuc-autocomplete-item:hover,
  #wf-use-cases .wfuc-autocomplete-item.wfuc-active {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--primary);
  }

  /* ─── Auto-configure all slides banner ─── */
  #wf-use-cases .wfuc-ds-autocfg {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 16px;
    border-radius: 10px;
    background: #faf8f5;
    border: 1px solid #e8e3dc;
    margin-bottom: 16px;
  }
  #wf-use-cases .wfuc-ds-autocfg-left {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 0;
  }
  #wf-use-cases .wfuc-ds-autocfg-title {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    font-weight: 600;
    color: #1a1714;
  }
  #wf-use-cases .wfuc-ds-autocfg-title svg {
    width: 13px;
    height: 13px;
    color: #6b625a;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-ds-autocfg-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
  }
  #wf-use-cases .wfuc-ds-autocfg-chip {
    font-size: 10.5px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
  }
  #wf-use-cases .wfuc-autocfg-excel {
    background: rgba(5, 150, 105, 0.08);
    color: #047857;
  }
  #wf-use-cases .wfuc-autocfg-ai {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--primary);
  }
  #wf-use-cases .wfuc-autocfg-image {
    background: rgba(22, 163, 74, 0.08);
    color: #16a34a;
  }
  #wf-use-cases .wfuc-ds-autocfg-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 14px;
    border-radius: 8px;
    background: #1a1714;
    color: #faf8f5;
    border: none;
    font-size: 12.5px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.15s ease;
    white-space: nowrap;
  }
  #wf-use-cases .wfuc-ds-autocfg-btn:hover:not(:disabled) {
    background: #2c2520;
    transform: translateY(-1px);
  }
  #wf-use-cases .wfuc-ds-autocfg-btn:active:not(:disabled) {
    transform: scale(0.97);
    transition-duration: 0.1s;
  }
  #wf-use-cases .wfuc-ds-autocfg-btn.wfuc-autocfg-done {
    background: #3d8b5e;
    cursor: default;
  }

  /* ─── Excel pending state on card ─── */
  #wf-use-cases .wfuc-card-action-btn--pending {
    opacity: 0.55;
    cursor: not-allowed !important;
    pointer-events: none;
  }

  #wf-use-cases .wfuc-btn-spinner {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: wfuc-spin 0.7s linear infinite;
    flex-shrink: 0;
  }

  /* ─────────────────────────────────────────────────────────────────────────
     External API sub-panel
  ──────────────────────────────────────────────────────────────────────── */

  #wf-use-cases .wfuc-ds-api-wrap {
    animation: wfuc-slide-down 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  /* Method + URL row */
  #wf-use-cases .wfuc-ds-api-method-url {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
  }
  #wf-use-cases .wfuc-ds-api-method-group {
    display: flex;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-ds-api-method-btn {
    padding: 7px 11px;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.04em;
    border: none;
    background: #f8fafc;
    color: #94a3b8;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    line-height: 1;
  }
  #wf-use-cases .wfuc-ds-api-method-btn:not(:last-child) {
    border-right: 1px solid #e2e8f0;
  }
  #wf-use-cases .wfuc-ds-api-method-btn.wfuc-active {
    background: var(--primary);
    color: #fff;
  }
  #wf-use-cases .wfuc-ds-api-method-btn:not(.wfuc-active):hover {
    background: #f1f5f9;
    color: #475569;
  }
  #wf-use-cases .wfuc-ds-api-url-input {
    flex: 1;
    min-width: 0;
    padding: 7px 10px;
    font-size: 12.5px;
    font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fafafa;
    color: #0f172a;
    outline: none;
    transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  }
  #wf-use-cases .wfuc-ds-api-url-input::placeholder { color: #c4bdb4; }
  #wf-use-cases .wfuc-ds-api-url-input:hover {
    border-color: #c8c1b9;
    background: #fffdfb;
  }
  #wf-use-cases .wfuc-ds-api-url-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
    background: #fff;
  }

  /* Variable pills row */
  #wf-use-cases .wfuc-ds-api-var-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
  }
  #wf-use-cases .wfuc-ds-api-var-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #94a3b8;
    flex-shrink: 0;
  }
  #wf-use-cases .wfuc-ds-api-var-pill {
    font-size: 11px !important;
    padding: 3px 8px !important;
  }

  /* Tab bar */
  #wf-use-cases .wfuc-ds-api-tabs {
    display: flex;
    border-bottom: 1px solid #e8e3de;
    margin-bottom: 0;
  }
  #wf-use-cases .wfuc-ds-api-tab {
    padding: 7px 12px;
    font-size: 12px;
    font-weight: 500;
    color: #94a3b8;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 4px;
  }
  #wf-use-cases .wfuc-ds-api-tab:hover { color: #475569; }
  #wf-use-cases .wfuc-ds-api-tab.wfuc-active {
    color: var(--primary);
    border-bottom-color: var(--primary);
  }
  #wf-use-cases .wfuc-ds-api-auth-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #16a34a;
    flex-shrink: 0;
  }

  /* Tab content */
  #wf-use-cases .wfuc-ds-api-tab-content {
    padding: 10px 0 4px;
    min-height: 44px;
  }

  /* Key-value table */
  #wf-use-cases .wfuc-ds-api-kv-wrap {
    display: flex;
    flex-direction: column;
    gap: 5px;
  }
  #wf-use-cases .wfuc-ds-api-kv-empty {
    font-size: 12px;
    color: #b8b2aa;
    font-style: italic;
    padding: 4px 0 6px;
  }
  #wf-use-cases .wfuc-ds-api-kv-row {
    display: flex;
    gap: 6px;
    align-items: center;
  }
  #wf-use-cases .wfuc-ds-api-kv-input {
    flex: 1;
    min-width: 0;
    padding: 6px 9px;
    font-size: 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    background: #fafafa;
    color: #0f172a;
    outline: none;
    transition: border-color 0.15s, background 0.15s;
    font-family: "SF Mono", "Fira Code", monospace;
  }
  #wf-use-cases .wfuc-ds-api-kv-input::placeholder { color: #c8c1b9; }
  #wf-use-cases .wfuc-ds-api-kv-input:hover { border-color: #c8c1b9; background: #fffdfb; }
  #wf-use-cases .wfuc-ds-api-kv-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.1);
    background: #fff;
  }
  #wf-use-cases .wfuc-ds-api-kv-del {
    width: 26px;
    height: 26px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: #cbd5e1;
    cursor: pointer;
    border-radius: 5px;
    flex-shrink: 0;
    transition: color 0.15s, background 0.15s;
  }
  #wf-use-cases .wfuc-ds-api-kv-del:hover { color: #ef4444; background: rgba(239,68,68,0.07); }
  #wf-use-cases .wfuc-ds-api-kv-del svg { width: 12px; height: 12px; }
  #wf-use-cases .wfuc-ds-api-kv-add {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 2px;
    padding: 5px 0;
    font-size: 11.5px;
    font-weight: 500;
    color: var(--primary);
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.15s;
  }
  #wf-use-cases .wfuc-ds-api-kv-add:hover { opacity: 1; }
  #wf-use-cases .wfuc-ds-api-kv-add svg { width: 11px; height: 11px; }

  /* Auth panel */
  #wf-use-cases .wfuc-ds-api-auth-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  #wf-use-cases .wfuc-ds-api-auth-type-sel {
    appearance: none;
    -webkit-appearance: none;
    width: 100%;
    padding: 7px 28px 7px 10px;
    font-size: 12.5px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fafafa url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 10px center;
    color: #0f172a;
    outline: none;
    cursor: pointer;
    transition: border-color 0.15s;
  }
  #wf-use-cases .wfuc-ds-api-auth-type-sel:focus { border-color: var(--primary); }
  #wf-use-cases .wfuc-ds-api-auth-none {
    font-size: 12px;
    color: #94a3b8;
    font-style: italic;
    padding: 4px 0;
  }
  #wf-use-cases .wfuc-ds-api-auth-fields {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  #wf-use-cases .wfuc-ds-api-field-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: #94a3b8;
    margin-bottom: 3px;
  }
  #wf-use-cases .wfuc-ds-api-optional {
    font-size: 10px;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    color: #b8b2aa;
  }
  #wf-use-cases .wfuc-ds-api-pw-wrap {
    position: relative;
    display: flex;
    align-items: center;
  }
  #wf-use-cases .wfuc-ds-api-auth-input {
    width: 100%;
    padding: 7px 34px 7px 10px;
    font-size: 12.5px;
    font-family: "SF Mono", "Fira Code", monospace;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fafafa;
    color: #0f172a;
    outline: none;
    transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
  }
  #wf-use-cases .wfuc-ds-api-auth-input::placeholder { color: #c4bdb4; }
  #wf-use-cases .wfuc-ds-api-auth-input:hover { border-color: #c8c1b9; background: #fffdfb; }
  #wf-use-cases .wfuc-ds-api-auth-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
    background: #fff;
  }
  #wf-use-cases .wfuc-ds-api-eye-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: none;
    padding: 2px;
    color: #94a3b8;
    cursor: pointer;
    display: flex;
    align-items: center;
    border-radius: 4px;
    transition: color 0.15s;
  }
  #wf-use-cases .wfuc-ds-api-eye-btn:hover { color: #475569; }

  /* Body panel */
  #wf-use-cases .wfuc-ds-api-body-wrap { display: flex; flex-direction: column; gap: 6px; }
  #wf-use-cases .wfuc-ds-api-body-fmt-row {
    display: flex;
    border: 1px solid #e2e8f0;
    border-radius: 7px;
    overflow: hidden;
    width: fit-content;
  }
  #wf-use-cases .wfuc-ds-api-fmt-btn {
    padding: 5px 12px;
    font-size: 11.5px;
    font-weight: 500;
    border: none;
    background: #f8fafc;
    color: #94a3b8;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
  }
  #wf-use-cases .wfuc-ds-api-fmt-btn:not(:last-child) { border-right: 1px solid #e2e8f0; }
  #wf-use-cases .wfuc-ds-api-fmt-btn.wfuc-active { background: var(--primary); color: #fff; }
  #wf-use-cases .wfuc-ds-api-fmt-btn:not(.wfuc-active):hover { background: #f1f5f9; color: #475569; }
  #wf-use-cases .wfuc-ds-api-body-ta { margin-top: 0; font-family: "SF Mono", "Fira Code", monospace; font-size: 12px; }

  /* Response path */
  #wf-use-cases .wfuc-ds-api-rp-wrap {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #f0ece8;
  }
  #wf-use-cases .wfuc-ds-api-rp-input {
    width: 100%;
    padding: 7px 10px;
    font-size: 12.5px;
    font-family: "SF Mono", "Fira Code", monospace;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fafafa;
    color: #0f172a;
    outline: none;
    transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
  }
  #wf-use-cases .wfuc-ds-api-rp-input::placeholder { color: #c4bdb4; }
  #wf-use-cases .wfuc-ds-api-rp-input:hover { border-color: #c8c1b9; background: #fffdfb; }
  #wf-use-cases .wfuc-ds-api-rp-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
    background: #fff;
  }