/* ============================================================================
   FORM WORKBENCH — Master-Detail Layout
   ============================================================================ */

/* ---- Top Action Bar ---- */

.wb-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.wb-actions-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.wb-service-filter {
  padding: 6px 10px;
  font-size: 13px;
  font-family: inherit;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  outline: none;
  background: #fff;
}

.wb-service-filter:focus {
  border-color: var(--color-primary);
}

/* ---- Master-Detail Layout ---- */

.wb-layout {
  display: flex;
  gap: 0;
  min-height: calc(100vh - 180px);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  background: var(--card-bg);
}

/* ---- Left Panel (form list) ---- */

.wb-list-panel {
  width: 300px;
  flex-shrink: 0;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  background: #fafbfc;
}

.wb-list-header {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wb-list-scroll {
  flex: 1;
  overflow-y: auto;
}

.wb-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid #f1f5f9;
  transition: background 100ms;
}

.wb-list-item:hover {
  background: #f1f5f9;
}

.wb-list-item.selected {
  background: var(--color-primary-bg);
  border-left: 3px solid var(--color-primary);
}

.wb-list-item-icon {
  color: #94a3b8;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.wb-list-item.selected .wb-list-item-icon {
  color: var(--color-primary);
}

.wb-list-item-info {
  flex: 1;
  min-width: 0;
}

.wb-list-item-id {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
}

.wb-list-item-title {
  font-size: 13px;
  font-weight: 500;
  color: #334155;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wb-list-item-meta {
  font-size: 11px;
  color: #94a3b8;
}

/* ---- Right Panel (detail pane) ---- */

.wb-detail-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ---- Detail Tabs ---- */

.wb-detail-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-color);
  background: #fafbfc;
  flex-shrink: 0;
}

.wb-detail-tab {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 500;
  color: #64748b;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 150ms;
  margin-bottom: -1px;
  font-family: inherit;
  white-space: nowrap;
}

.wb-detail-tab:hover {
  color: #334155;
  background: #f1f5f9;
}

.wb-detail-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: #fff;
}

.wb-detail-tab i {
  width: 14px;
  height: 14px;
}

/* ---- Detail Content ---- */

.wb-detail-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}

/* ---- Empty state (no form selected) ---- */

.wb-empty-detail {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  color: #94a3b8;
  text-align: center;
}

/* ---- Drop zone overlay for workbench ---- */

.wb-dropzone-inline {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: #94a3b8;
  text-align: center;
  cursor: pointer;
  border: 2px dashed var(--border-color);
  border-radius: 10px;
  margin: 20px;
  transition: all 200ms;
}

.wb-dropzone-inline:hover {
  border-color: var(--color-primary-light);
  background: var(--color-primary-bg);
}

.wb-dropzone-inline.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
}

/* ---- Form Info Grid ---- */

.wb-info-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
  font-size: 13px;
}

.wb-info-label {
  font-weight: 600;
  color: #64748b;
}

.wb-info-value {
  color: #1e293b;
}

/* ---- Original Document Viewer ---- */

.wb-viewer-frame {
  width: 100%;
  min-height: 800px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: #fff;
}

.wb-viewer-image {
  max-width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: #f8fafc;
}

.wb-viewer-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  color: #94a3b8;
  text-align: center;
}

.wb-viewer-placeholder h3 {
  margin-top: 16px;
  font-size: 16px;
  font-weight: 600;
  color: #64748b;
}

.wb-viewer-placeholder p {
  font-size: 13px;
  max-width: 400px;
  margin-top: 8px;
}

.wb-viewer-placeholder .wb-viewer-hint {
  font-size: 12px;
  color: #cbd5e1;
  margin-top: 4px;
}

/* DOCX preview container */
#wb-docx-container {
  background: #f1f5f9;
  border-radius: 8px;
  padding: 16px;
  min-height: 600px;
  overflow: auto;
}

#wb-docx-container .docx-wrapper {
  background: #fff;
  padding: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  border-radius: 4px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Responsive ---- */

@media (max-width: 900px) {
  .wb-layout {
    flex-direction: column;
  }
  .wb-list-panel {
    width: 100%;
    max-height: 250px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
}