diff --git a/frontend/src/assets/editor-shared.css b/frontend/src/assets/editor-shared.css
index dcd044a..f7c09df 100644
--- a/frontend/src/assets/editor-shared.css
+++ b/frontend/src/assets/editor-shared.css
@@ -344,7 +344,7 @@
 }
 .btn-generate {
   padding: 0.4rem 0.9rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
@@ -547,7 +547,7 @@
   z-index: 100;
   transform: translateX(-50%);
   padding: 0.3rem 0.75rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/components/HistoryPanel.vue b/frontend/src/components/HistoryPanel.vue
index c91a9c8..a4c72ba 100644
--- a/frontend/src/components/HistoryPanel.vue
+++ b/frontend/src/components/HistoryPanel.vue
@@ -395,7 +395,7 @@ onMounted(loadVersions);
 
 .btn-restore {
   padding: 0.45rem 1rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/components/TaskLogSection.vue b/frontend/src/components/TaskLogSection.vue
index 3f734e0..803890b 100644
--- a/frontend/src/components/TaskLogSection.vue
+++ b/frontend/src/components/TaskLogSection.vue
@@ -311,7 +311,7 @@ onMounted(loadLogs);
 .btn-log-save {
   margin-left: auto;
   padding: 0.3rem 0.75rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/components/VersionHistorySection.vue b/frontend/src/components/VersionHistorySection.vue
index 6113d25..199d606 100644
--- a/frontend/src/components/VersionHistorySection.vue
+++ b/frontend/src/components/VersionHistorySection.vue
@@ -236,7 +236,7 @@ function restore() {
 .vh-btn-back:hover { border-color: var(--color-primary); color: var(--color-primary); }
 
 .vh-btn-restore {
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   border: none;
   border-radius: var(--radius-sm);
   padding: 0.25rem 0.6rem;
diff --git a/frontend/src/components/WorkspaceNoteEditor.vue b/frontend/src/components/WorkspaceNoteEditor.vue
index 975c71e..ee3a7b5 100644
--- a/frontend/src/components/WorkspaceNoteEditor.vue
+++ b/frontend/src/components/WorkspaceNoteEditor.vue
@@ -670,7 +670,7 @@ defineExpose({ reload: loadProjectNotes });
 .new-note-input:focus { outline: none; }
 
 .btn-confirm {
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: 4px;
diff --git a/frontend/src/components/WorkspaceTaskPanel.vue b/frontend/src/components/WorkspaceTaskPanel.vue
index 9504478..dff15cd 100644
--- a/frontend/src/components/WorkspaceTaskPanel.vue
+++ b/frontend/src/components/WorkspaceTaskPanel.vue
@@ -397,7 +397,7 @@ defineExpose({ reload: loadAll });
 .task-add-input:focus { outline: none; border-color: var(--color-primary); }
 
 .btn-add {
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: 5px;
diff --git a/frontend/src/views/ForgotPasswordView.vue b/frontend/src/views/ForgotPasswordView.vue
index e274c38..d43bbf8 100644
--- a/frontend/src/views/ForgotPasswordView.vue
+++ b/frontend/src/views/ForgotPasswordView.vue
@@ -140,7 +140,7 @@ async function handleSubmit() {
 .btn-submit {
   width: 100%;
   padding: 0.6rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/views/LoginView.vue b/frontend/src/views/LoginView.vue
index 4098d42..3eb05da 100644
--- a/frontend/src/views/LoginView.vue
+++ b/frontend/src/views/LoginView.vue
@@ -179,7 +179,7 @@ function loginWithOAuth() {
 .btn-submit {
   width: 100%;
   padding: 0.6rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/views/NoteEditorView.vue b/frontend/src/views/NoteEditorView.vue
index 8dd5890..b7d1d6a 100644
--- a/frontend/src/views/NoteEditorView.vue
+++ b/frontend/src/views/NoteEditorView.vue
@@ -748,7 +748,7 @@ onUnmounted(() => assist.clearSelection());
   cursor: pointer;
   font-family: inherit;
 }
-.btn-link-all:hover { background: var(--color-primary); color: var(--fs-text-on-action); }
+.btn-link-all:hover { background: var(--color-action-primary); color: var(--fs-text-on-action); }
 
 .link-suggest-list {
   display: flex;
diff --git a/frontend/src/views/ProjectListView.vue b/frontend/src/views/ProjectListView.vue
index 9e8d2c1..f4573aa 100644
--- a/frontend/src/views/ProjectListView.vue
+++ b/frontend/src/views/ProjectListView.vue
@@ -326,8 +326,8 @@ function overallPct(project: Project): { total: number; pct: number } {
 .empty-icon { font-size: 2.5rem; margin-bottom: 0.75rem; opacity: 0.3; }
 .empty-title { font-size: 1rem; font-weight: 500; color: var(--color-text-secondary); margin: 0 0 0.35rem; }
 .empty-sub { font-size: 0.85rem; margin: 0 0 1rem; }
-.empty-action { display: inline-block; padding: 0.4rem 1rem; border: 1px solid var(--color-primary); border-radius: var(--radius-sm); color: var(--color-primary); background: none; cursor: pointer; font-size: 0.85rem; transition: background 0.15s, color 0.15s; }
-.empty-action:hover { background: var(--color-primary); color: var(--fs-text-on-action); }
+.empty-action { display: inline-block; padding: 0.4rem 1rem; border: 1px solid var(--color-action-primary); border-radius: var(--radius-sm); color: var(--color-action-primary); background: none; cursor: pointer; font-size: 0.85rem; transition: background 0.15s, color 0.15s; }
+.empty-action:hover { background: var(--color-action-primary); color: var(--fs-text-on-action); }
 
 .skeleton-card {
   height: 140px;
@@ -578,8 +578,8 @@ function overallPct(project: Project): { total: number; pct: number } {
   background: var(--color-bg);
 }
 .modal-btn-primary {
-  background: var(--color-primary);
-  border-color: var(--color-primary);
+  background: var(--color-action-primary);
+  border-color: var(--color-action-primary);
   color: var(--fs-text-on-action);
 }
 .modal-btn-primary:hover:not(:disabled) {
diff --git a/frontend/src/views/ProjectView.vue b/frontend/src/views/ProjectView.vue
index 9785df1..efdb4a9 100644
--- a/frontend/src/views/ProjectView.vue
+++ b/frontend/src/views/ProjectView.vue
@@ -1224,7 +1224,7 @@ async function confirmDelete() {
   cursor: pointer;
   border: 1px solid var(--color-border);
 }
-.ms-plan-actions .btn-primary { background: var(--color-primary); color: var(--fs-text-on-action); border-color: var(--color-primary); }
+.ms-plan-actions .btn-primary { background: var(--color-action-primary); color: var(--fs-text-on-action); border-color: var(--color-action-primary); }
 .ms-plan-actions .btn-primary:disabled { opacity: 0.6; cursor: default; }
 .ms-plan-actions .btn-secondary { background: var(--color-bg-card); color: var(--color-text); }
 
@@ -1393,7 +1393,7 @@ async function confirmDelete() {
   line-height: 1;
 }
 .task-card:hover .task-advance-btn { opacity: 1; }
-.task-advance-btn:hover { background: var(--color-primary); border-color: var(--color-primary); color: var(--fs-text-on-action); }
+.task-advance-btn:hover { background: var(--color-action-primary); border-color: var(--color-action-primary); color: var(--fs-text-on-action); }
 .task-advance-btn--done:hover { background: var(--color-success, #22c55e); border-color: var(--color-success, #22c55e); color: var(--fs-text-on-action); }
 .task-advance-btn:disabled { opacity: 0.4; cursor: default; }
 
diff --git a/frontend/src/views/RegisterInviteView.vue b/frontend/src/views/RegisterInviteView.vue
index de7d162..f188cc2 100644
--- a/frontend/src/views/RegisterInviteView.vue
+++ b/frontend/src/views/RegisterInviteView.vue
@@ -250,7 +250,7 @@ async function handleSubmit() {
 .btn-submit {
   width: 100%;
   padding: 0.6rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/views/RegisterView.vue b/frontend/src/views/RegisterView.vue
index 24112a4..63cab26 100644
--- a/frontend/src/views/RegisterView.vue
+++ b/frontend/src/views/RegisterView.vue
@@ -219,7 +219,7 @@ async function handleSubmit() {
 .btn-submit {
   width: 100%;
   padding: 0.6rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/views/ResetPasswordView.vue b/frontend/src/views/ResetPasswordView.vue
index 92a4af8..9cbaa70 100644
--- a/frontend/src/views/ResetPasswordView.vue
+++ b/frontend/src/views/ResetPasswordView.vue
@@ -198,7 +198,7 @@ async function handleSubmit() {
 .btn-submit {
   width: 100%;
   padding: 0.6rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/views/SnippetListView.vue b/frontend/src/views/SnippetListView.vue
index b4b95b1..c0828b8 100644
--- a/frontend/src/views/SnippetListView.vue
+++ b/frontend/src/views/SnippetListView.vue
@@ -654,16 +654,16 @@ function usageTitle(s: SnippetListItem): string {
 .empty-action {
   display: inline-block;
   padding: 0.4rem 1rem;
-  border: 1px solid var(--color-primary);
+  border: 1px solid var(--color-action-primary);
   border-radius: var(--radius-sm);
-  color: var(--color-primary);
+  color: var(--color-action-primary);
   background: none;
   cursor: pointer;
   font-size: 0.85rem;
   transition: background 0.15s, color 0.15s;
 }
 .empty-action:hover {
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
 }
 
diff --git a/frontend/src/views/TaskEditorView.vue b/frontend/src/views/TaskEditorView.vue
index 6032a11..f8e43c4 100644
--- a/frontend/src/views/TaskEditorView.vue
+++ b/frontend/src/views/TaskEditorView.vue
@@ -970,7 +970,7 @@ useEditorGuards(dirty, save);
 .subtask-input:focus { outline: none; border-color: var(--color-primary); }
 .btn-subtask-confirm {
   padding: 0.25rem 0.5rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
diff --git a/frontend/src/views/UserManagementView.vue b/frontend/src/views/UserManagementView.vue
index 1fb1721..29460c9 100644
--- a/frontend/src/views/UserManagementView.vue
+++ b/frontend/src/views/UserManagementView.vue
@@ -330,7 +330,7 @@ function formatDate(iso: string): string {
 }
 .btn-invite {
   padding: 0.45rem 1rem;
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
   border: none;
   border-radius: var(--radius-sm);
@@ -394,7 +394,7 @@ function formatDate(iso: string): string {
   cursor: default;
 }
 .btn-toggle-open {
-  background: var(--color-primary);
+  background: var(--color-action-primary);
   color: var(--fs-text-on-action);
 }
 .btn-toggle-open:hover:not(:disabled) {