Remove shared CSS ownership from Campaign

webui/src/styles/campaign-workspace.css

@@ -88,7 +88,6 @@
   line-height: 1.45;
   color: var(--text);
 }
-.danger-text { color: var(--danger-text); }
 .section-mini-heading {
   margin: 18px 0 8px;
   font-size: 12px;
@@ -108,21 +107,6 @@
   white-space: pre-wrap;
   font-size: 12px;
 }
-.placeholder-stack {
-  display: grid;
-  gap: 8px;
-  margin-top: 12px;
-}
-.placeholder-stack span {
-  display: block;
-  border: 1px dashed var(--line-dark);
-  border-radius: 6px;
-  background: var(--panel-soft);
-  padding: 10px 12px;
-  color: var(--muted);
-  font-weight: 700;
-}
-
 @media (max-width: 1100px) {
   .template-editor-grid { grid-template-columns: 1fr; }
 }
@@ -242,9 +226,6 @@
   font-size: 12px;
   line-height: 1.45;
 }
-.compact-detail-list {
-  gap: 8px;
-}
 .global-values-preview {
   margin-top: 14px;
 }
@@ -310,9 +291,6 @@
 .module-workspace .section-sidebar {
   padding-top: 18px;
 }
-.settings-dashboard-grid {
-  align-items: start;
-}
 .queue-pressure-section {
   margin-bottom: 18px;
 }
@@ -401,10 +379,6 @@
   line-height: 1.35;
 }
 
-.small-text {
-  font-size: 0.78rem;
-}
-
 .compact-chip-row {
   gap: 0.28rem;
   flex-wrap: nowrap;
@@ -2331,29 +2305,6 @@
   overflow-wrap: anywhere;
 }
 
-.admin-secret {
-  display: block;
-  padding: 14px;
-  margin: 12px 0;
-  overflow-wrap: anywhere;
-  border: var(--border-line);
-  border-radius: var(--radius-sm);
-  background: var(--surface-muted);
-  font-size: 14px;
-  user-select: all;
-}
-
-.admin-json-preview {
-  max-height: 420px;
-  overflow: auto;
-  padding: 12px;
-  border: var(--border-line);
-  border-radius: var(--radius-sm);
-  background: var(--surface-muted);
-  white-space: pre-wrap;
-  word-break: break-word;
-}
-
 .dropdown-error {
   max-width: 300px;
   margin: 6px 8px 8px;
@@ -2649,66 +2600,6 @@
   margin: 0;
   width: 100%;
 }
-.admin-audit-grid .data-grid-scroll-region {
-  max-height: min(68vh, 720px);
-}
-.admin-audit-grid .data-grid-header-cell {
-  top: 0;
-}
-.admin-details-grid {
-  display: grid;
-  grid-template-columns: repeat(2, minmax(0, 1fr));
-  gap: 10px 18px;
-}
-.admin-details-grid > div {
-  min-width: 0;
-  padding: 10px 0;
-  border-bottom: var(--border-line);
-}
-.admin-details-grid dt {
-  color: var(--muted);
-  font-size: 12px;
-  font-weight: 700;
-  text-transform: uppercase;
-}
-.admin-details-grid dd {
-  margin: 4px 0 0;
-  overflow-wrap: anywhere;
-}
-.admin-governance-mode {
-  display: grid;
-  gap: 8px;
-}
-.admin-tenant-assignment-row {
-  display: grid;
-  grid-template-columns: minmax(0, 1fr) 140px;
-  align-items: center;
-  gap: 10px;
-}
-.admin-settings-form {
-  display: grid;
-  gap: 18px;
-}
-.admin-settings-form .card {
-  margin: 0;
-}
-@media (max-width: 850px) {
-  .admin-details-grid,
-  .admin-tenant-assignment-row {
-    grid-template-columns: 1fr;
-  }
-}
-
-.admin-managed-notice {
-  margin: 0 0 16px;
-  padding: 12px 14px;
-  border: 1px solid var(--info-muted-border);
-  border-radius: var(--radius-sm);
-  background: var(--info-bg);
-  color: var(--info-text-deep);
-  line-height: 1.45;
-}
-
 .campaign-access-dialog > .dialog-header,
 .campaign-access-dialog > .dialog-footer {
   background: var(--surface);