diff --git a/frontend/src/components/HistoryPanel.vue b/frontend/src/components/HistoryPanel.vue
index a4c72ba..a4ddd89 100644
--- a/frontend/src/components/HistoryPanel.vue
+++ b/frontend/src/components/HistoryPanel.vue
@@ -281,7 +281,7 @@ onMounted(loadVersions);
 
         <div class="history-footer">
           <button
-            class="btn-restore"
+            class="btn-primary"
             :disabled="!selectedVersion?.body"
             @click="restore"
           >Restore this version</button>
@@ -393,19 +393,6 @@ onMounted(loadVersions);
   border-top: 1px solid var(--color-border);
 }
 
-.btn-restore {
-  padding: 0.45rem 1rem;
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.9rem;
-}
-.btn-restore:disabled {
-  opacity: 0.5;
-  cursor: default;
-}
 
 /* ── Pin badges + label rendering ───────────────────────────────────────── */
 .pin-badge {
diff --git a/frontend/src/components/NotificationsPanel.vue b/frontend/src/components/NotificationsPanel.vue
index ea5275b..ce9eb6f 100644
--- a/frontend/src/components/NotificationsPanel.vue
+++ b/frontend/src/components/NotificationsPanel.vue
@@ -50,7 +50,7 @@ onMounted(() => store.fetchAll())
       <span class="notif-panel-title">Notifications</span>
       <button
         v-if="store.count > 0"
-        class="btn-mark-all"
+        class="btn-text"
         @click="store.markAll()"
       >Mark all read</button>
     </header>
@@ -70,7 +70,7 @@ onMounted(() => store.fetchAll())
           </p>
           <span class="notif-time">{{ relativeTime(n.created_at) }}</span>
         </div>
-        <button class="btn-notif-close" @click.stop="store.markRead(n.id)" aria-label="Dismiss"><X :size="16" /></button>
+        <button class="btn-text" @click.stop="store.markRead(n.id)" aria-label="Dismiss"><X :size="16" /></button>
       </li>
     </ul>
     <div v-else class="notif-empty">No unread notifications</div>
@@ -108,21 +108,6 @@ onMounted(() => store.fetchAll())
   font-size: 0.9rem;
 }
 
-.btn-mark-all {
-  background: none;
-  border: none;
-  color: var(--color-primary);
-  font-size: 0.78rem;
-  cursor: pointer;
-  padding: 0;
-}
-.btn-mark-all:hover { text-decoration: underline; }
-
-.notif-list {
-  list-style: none;
-  padding: 0;
-  margin: 0;
-}
 
 .notif-item {
   display: flex;
@@ -148,22 +133,4 @@ onMounted(() => store.fetchAll())
 }
 .notif-time { font-size: 0.75rem; color: var(--color-muted); }
 
-.btn-notif-close {
-  background: none;
-  border: none;
-  color: var(--color-muted);
-  cursor: pointer;
-  font-size: 0.8rem;
-  padding: 0.1rem 0.25rem;
-  flex-shrink: 0;
-  transition: color 0.1s;
-}
-.btn-notif-close:hover { color: var(--color-text); }
-
-.notif-empty {
-  padding: 1.5rem;
-  text-align: center;
-  color: var(--color-muted);
-  font-size: 0.88rem;
-}
 </style>
diff --git a/frontend/src/components/ShareDialog.vue b/frontend/src/components/ShareDialog.vue
index 808c71c..a76278d 100644
--- a/frontend/src/components/ShareDialog.vue
+++ b/frontend/src/components/ShareDialog.vue
@@ -117,7 +117,7 @@ onMounted(async () => {
       <div class="share-dialog" role="dialog" :aria-label="`Share ${resourceTitle}`">
         <header class="share-header">
           <h2 class="share-title">Share "{{ resourceTitle }}"</h2>
-          <button class="btn-close" @click="emit('close')" aria-label="Close"><X :size="16" /></button>
+          <button class="btn-text" @click="emit('close')" aria-label="Close"><X :size="16" /></button>
         </header>
 
         <!-- Add share form -->
@@ -184,7 +184,7 @@ onMounted(async () => {
                 <option value="editor">Editor</option>
                 <option value="admin">Admin</option>
               </select>
-              <button class="btn-remove-share" @click="removeShare(share)" aria-label="Remove"><X :size="16" /></button>
+              <button class="btn-text" @click="removeShare(share)" aria-label="Remove"><X :size="16" /></button>
             </li>
             <li v-if="!shares.length" class="shares-empty">Not shared with anyone yet</li>
           </ul>
@@ -231,23 +231,6 @@ onMounted(async () => {
   color: var(--color-text);
 }
 
-.btn-close {
-  background: none;
-  border: none;
-  color: var(--color-text-muted);
-  cursor: pointer;
-  font-size: 1.1rem;
-  padding: 0.25rem;
-  line-height: 1;
-  border-radius: 4px;
-  transition: color 0.15s;
-}
-.btn-close:hover { color: var(--color-text); }
-
-.share-add {
-  padding: 1rem 1.5rem;
-  border-bottom: 1px solid var(--color-border);
-}
 
 .share-tabs {
   display: flex;
@@ -394,23 +377,4 @@ onMounted(async () => {
   cursor: pointer;
 }
 
-.btn-remove-share {
-  background: none;
-  border: none;
-  color: var(--color-text-muted);
-  cursor: pointer;
-  font-size: 0.9rem;
-  padding: 0.15rem 0.3rem;
-  border-radius: 4px;
-  transition: color 0.15s;
-  flex-shrink: 0;
-}
-.btn-remove-share:hover { color: var(--color-danger, #ef4444); }
-
-.shares-empty {
-  color: var(--color-text-muted);
-  font-size: 0.85rem;
-  text-align: center;
-  padding: 0.75rem;
-}
 </style>
diff --git a/frontend/src/components/SystemsSection.vue b/frontend/src/components/SystemsSection.vue
index cb9d63c..1564790 100644
--- a/frontend/src/components/SystemsSection.vue
+++ b/frontend/src/components/SystemsSection.vue
@@ -163,7 +163,7 @@ async function confirmDelete() {
 
     <!-- Toolbar -->
     <div class="systems-toolbar">
-      <button v-if="!showCreate" class="btn-add-system" @click="openCreate">
+      <button v-if="!showCreate" class="btn-ghost btn-inline btn-add-system" @click="openCreate">
         + System
       </button>
       <label v-if="archivedSystems.length" class="archived-toggle">
@@ -190,10 +190,10 @@ async function confirmDelete() {
         aria-label="System description"
       ></textarea>
       <div class="system-form-actions">
-        <button type="submit" class="btn-confirm" :disabled="!newName.trim() || creating">
+        <button type="submit" class="btn-primary btn-compact" :disabled="!newName.trim() || creating">
           {{ creating ? "Creating…" : "Create" }}
         </button>
-        <button type="button" class="btn-cancel" @click="cancelCreate">Cancel</button>
+        <button type="button" class="btn-ghost btn-compact" @click="cancelCreate">Cancel</button>
       </div>
     </form>
 
@@ -211,7 +211,7 @@ async function confirmDelete() {
     <div v-else-if="!visibleSystems.length" class="systems-empty">
       <p class="empty-title">No systems yet</p>
       <p class="empty-sub">Define a reusable subsystem or area to organize issues against.</p>
-      <button v-if="!showCreate" class="btn-confirm" @click="openCreate">+ Create a system</button>
+      <button v-if="!showCreate" class="btn-primary btn-compact" @click="openCreate">+ Create a system</button>
     </div>
 
     <!-- List -->
@@ -241,10 +241,10 @@ async function confirmDelete() {
               aria-label="System description"
             ></textarea>
             <div class="system-form-actions">
-              <button type="submit" class="btn-confirm" :disabled="!editName.trim() || savingEdit">
+              <button type="submit" class="btn-primary btn-compact" :disabled="!editName.trim() || savingEdit">
                 {{ savingEdit ? "Saving…" : "Save" }}
               </button>
-              <button type="button" class="btn-cancel" @click="cancelEdit">Cancel</button>
+              <button type="button" class="btn-ghost btn-compact" @click="cancelEdit">Cancel</button>
             </div>
           </form>
         </template>
@@ -387,51 +387,6 @@ async function confirmDelete() {
 .system-textarea { resize: vertical; }
 
 .system-form-actions { display: flex; gap: 0.4rem; }
-.btn-confirm {
-  padding: 0.35rem 0.8rem;
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.82rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-confirm:hover:not(:disabled) { background: var(--color-action-primary-hover); }
-.btn-confirm:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
-.btn-confirm:disabled { opacity: 0.5; cursor: default; }
-.btn-cancel {
-  padding: 0.35rem 0.8rem;
-  background: var(--color-action-secondary);
-  border: none;
-  color: var(--fs-text-on-action);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.82rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-cancel:hover { background: var(--color-action-secondary-hover); }
-.btn-cancel:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
-
-/* ── List ─────────────────────────────────────────────────────── */
-.systems-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.4rem; }
-.system-card {
-  display: flex;
-  align-items: flex-start;
-  gap: 0.65rem;
-  padding: 0.65rem 0.85rem;
-  background: var(--color-bg-card);
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-md);
-  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
-  transition: border-color 0.12s, box-shadow 0.15s;
-}
-.system-card:hover {
-  border-color: color-mix(in srgb, var(--color-primary) 50%, var(--color-border));
-  box-shadow: 0 3px 10px rgba(0,0,0,0.07);
-}
 .system-card--archived { opacity: 0.6; }
 
 .system-swatch {
diff --git a/frontend/src/components/TaskLogSection.vue b/frontend/src/components/TaskLogSection.vue
index 803890b..e53c4dc 100644
--- a/frontend/src/components/TaskLogSection.vue
+++ b/frontend/src/components/TaskLogSection.vue
@@ -122,8 +122,8 @@ onMounted(loadLogs);
             class="log-duration-input"
             placeholder="min"
           />
-          <button class="btn-log-save" @click="saveEdit(log)">Save</button>
-          <button class="btn-log-cancel" @click="cancelEdit">Cancel</button>
+          <button class="btn-primary btn-compact" @click="saveEdit(log)">Save</button>
+          <button class="btn-ghost btn-compact" @click="cancelEdit">Cancel</button>
         </div>
       </template>
       <template v-else>
@@ -133,8 +133,8 @@ onMounted(loadLogs);
             {{ formatDuration(log.duration_minutes) }}
           </span>
           <div class="log-entry-actions">
-            <button class="btn-log-edit" @click="startEdit(log)" title="Edit">Edit</button>
-            <button class="btn-log-delete" aria-label="Delete log entry" @click="deleteLog(log)">&times;</button>
+            <button class="btn-text" @click="startEdit(log)" title="Edit">Edit</button>
+            <button class="btn-text" aria-label="Delete log entry" @click="deleteLog(log)">&times;</button>
           </div>
         </div>
         <div class="log-content prose" v-html="renderMarkdown(log.content)"></div>
@@ -162,7 +162,7 @@ onMounted(loadLogs);
           />
         </label>
         <button
-          class="btn-log-submit"
+          class="btn-primary btn-compact"
           @click="submitLog"
           :disabled="!newContent.trim() || submitting"
         >
@@ -230,34 +230,7 @@ onMounted(loadLogs);
   gap: 0.25rem;
 }
 
-.btn-log-edit,
-.btn-log-delete {
-  background: none;
-  border: none;
-  cursor: pointer;
-  color: var(--color-text-muted);
-  font-size: 0.8rem;
-  font-family: inherit;
-  padding: 0.1rem 0.25rem;
-  line-height: 1;
-}
 
-.btn-log-edit:hover { color: var(--color-primary); }
-.btn-log-delete:hover { color: var(--color-danger, #e74c3c); }
-
-.log-content {
-  font-size: 0.875rem;
-}
-
-.log-content :deep(p) { margin: 0; }
-
-.log-add {
-  border-top: 1px solid var(--color-border);
-  padding-top: 0.5rem;
-  display: flex;
-  flex-direction: column;
-  gap: 0.4rem;
-}
 
 .log-textarea {
   width: 100%;
@@ -307,32 +280,6 @@ onMounted(loadLogs);
   border-color: var(--color-primary);
 }
 
-.btn-log-submit,
-.btn-log-save {
-  margin-left: auto;
-  padding: 0.3rem 0.75rem;
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.8rem;
-  font-family: inherit;
-}
 
-.btn-log-submit:disabled {
-  opacity: 0.5;
-  cursor: default;
-}
 
-.btn-log-cancel {
-  padding: 0.3rem 0.6rem;
-  background: none;
-  border: 1px solid var(--color-border);
-  color: var(--color-text-secondary);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.8rem;
-  font-family: inherit;
-}
 </style>
diff --git a/frontend/src/views/KnowledgeView.vue b/frontend/src/views/KnowledgeView.vue
index 11b37aa..6d01bc4 100644
--- a/frontend/src/views/KnowledgeView.vue
+++ b/frontend/src/views/KnowledgeView.vue
@@ -381,7 +381,7 @@ onUnmounted(() => {
             <option value="alpha">Alphabetical</option>
             <option value="type">By type</option>
           </select>
-          <button class="btn-graph" :class="{ active: graphOpen }" @click="toggleGraph" title="Toggle graph view">
+          <button class="btn-ghost btn-compact" :class="{ active: graphOpen }" @click="toggleGraph" title="Toggle graph view">
             <Share2 :size="16" />
             Graph
           </button>
@@ -463,14 +463,14 @@ onUnmounted(() => {
           <span>Graph</span>
           <div style="display:flex;gap:4px;align-items:center">
             <button
-              class="btn-icon-sm"
+              class="btn-text"
               @click="toggleGraphExpand"
               :title="graphExpanded ? 'Narrow panel' : 'Expand panel'"
             >
               <ChevronLeft v-if="graphExpanded" :size="16" />
               <ChevronRight v-else :size="16" />
             </button>
-            <button class="btn-icon-sm" @click="toggleGraph" title="Close graph">
+            <button class="btn-text" @click="toggleGraph" title="Close graph">
               <X :size="16" />
             </button>
           </div>
@@ -719,26 +719,6 @@ onUnmounted(() => {
   cursor: pointer;
   outline: none;
 }
-.btn-graph {
-  display: flex;
-  align-items: center;
-  gap: 5px;
-  padding: 6px 12px;
-  border-radius: 8px;
-  border: 1px solid var(--color-border, rgba(255,255,255,0.1));
-  background: transparent;
-  color: var(--color-muted);
-  cursor: pointer;
-  font-size: 0.85rem;
-  transition: all 0.15s;
-  white-space: nowrap;
-}
-.btn-graph:hover { color: var(--color-text); border-color: rgba(255,255,255,0.2); }
-.btn-graph.active {
-  background: var(--color-primary-wash);
-  border-color: rgba(91, 74, 138, 0.35);
-  color: var(--color-primary);
-}
 
 /* ── Card grid ───────────────────────────────────────────── */
 .card-grid {
@@ -956,22 +936,6 @@ onUnmounted(() => {
   border-bottom: 1px solid var(--color-border, rgba(255,255,255,0.06));
   flex-shrink: 0;
 }
-.btn-icon-sm {
-  background: none;
-  border: none;
-  color: var(--color-muted);
-  cursor: pointer;
-  padding: 2px 6px;
-  border-radius: 4px;
-  font-size: 0.85rem;
-  transition: color 0.15s;
-}
-.btn-icon-sm:hover { color: var(--color-text); }
-.graph-embed {
-  flex: 1;
-  overflow: hidden;
-  position: relative;
-}
 /* Override GraphView's 100vh height so it fills the panel instead */
 .graph-embed :deep(.graph-page) {
   height: 100%;
diff --git a/frontend/src/views/LogsView.vue b/frontend/src/views/LogsView.vue
index f11b3d8..c42738b 100644
--- a/frontend/src/views/LogsView.vue
+++ b/frontend/src/views/LogsView.vue
@@ -177,7 +177,7 @@ function clearFilters() {
         <input v-model="dateTo" type="date" class="filter-date" title="To date" />
         <button
           v-if="category || search || dateFrom || dateTo"
-          class="btn-clear"
+          class="btn-ghost btn-compact"
           @click="clearFilters"
         >
           Clear
@@ -337,19 +337,6 @@ function clearFilters() {
 .filter-date {
   width: 140px;
 }
-.btn-clear {
-  padding: 0.4rem 0.75rem;
-  background: transparent;
-  color: var(--color-text-muted);
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.85rem;
-}
-.btn-clear:hover {
-  color: var(--color-text);
-  border-color: var(--color-text-muted);
-}
 
 /* Table */
 .loading-msg,
diff --git a/frontend/src/views/NoteViewerView.vue b/frontend/src/views/NoteViewerView.vue
index f12200d..7e89d34 100644
--- a/frontend/src/views/NoteViewerView.vue
+++ b/frontend/src/views/NoteViewerView.vue
@@ -194,22 +194,22 @@ async function convertToTask() {
       </div>
       <template v-else-if="store.currentNote">
         <div class="toolbar">
-          <router-link to="/notes" class="btn-back">← Notes</router-link>
+          <router-link to="/notes" class="btn-ghost">← Notes</router-link>
           <router-link
             :to="`/notes/${store.currentNote.id}/edit`"
-            class="btn-edit"
+            class="btn-primary"
           >
             Edit
           </router-link>
           <button
             v-if="!store.currentNote.is_task"
-            class="btn-convert"
+            class="btn-secondary btn-compact"
             @click="convertToTask"
             :disabled="converting"
           >
             {{ converting ? "Converting..." : "Convert to Task" }}
           </button>
-          <button class="btn-share" @click="showShare = true">Share</button>
+          <button class="btn-secondary btn-compact" @click="showShare = true">Share</button>
         </div>
 
         <!-- Breadcrumb: parent → project → milestone -->
@@ -329,81 +329,10 @@ async function convertToTask() {
   gap: 0.75rem;
   margin-bottom: 0.75rem;
 }
-.btn-back {
-  display: inline-flex;
-  align-items: center;
-  padding: 0.45rem 1rem;
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  background: none;
-  color: var(--color-text-secondary);
-  text-decoration: none;
-  cursor: pointer;
-  font-size: 0.9rem;
-}
-.btn-back:hover {
-  border-color: var(--color-primary);
-  color: var(--color-primary);
-}
 /* Edit: Moss action-primary — switching from view to edit is operating
    the software, not a brand moment. */
-.btn-edit {
-  display: inline-flex;
-  align-items: center;
-  padding: 0.45rem 1.1rem;
-  border: none;
-  border-radius: var(--radius-sm);
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  text-decoration: none;
-  cursor: pointer;
-  font-size: 0.875rem;
-  font-weight: 500;
-  transition: background 0.15s;
-}
-.btn-edit:hover {
-  background: var(--color-action-primary-hover);
-  color: var(--fs-text-on-action);
-}
 /* Convert + Share: Bronze action-secondary — alternate paths */
-.btn-convert {
-  margin-left: auto;
-  padding: 0.3rem 0.75rem;
-  background: var(--color-action-secondary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.85rem;
-  transition: background 0.15s;
-}
-.btn-convert:hover { background: var(--color-action-secondary-hover); }
-.btn-convert:disabled {
-  opacity: 0.6;
-  cursor: default;
-}
 
-.btn-share {
-  padding: 0.3rem 0.75rem;
-  background: var(--color-action-secondary);
-  border: none;
-  border-radius: var(--radius-sm);
-  color: var(--fs-text-on-action);
-  cursor: pointer;
-  font-size: 0.85rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-share:hover { background: var(--color-action-secondary-hover); }
-
-.note-title {
-  font-family: "Fraunces", Georgia, serif;
-  font-size: 2rem;
-  font-weight: 500;
-  line-height: 1.2;
-  margin: 0.25rem 0 0.5rem;
-  color: var(--color-text);
-}
 
 .meta {
   display: flex;
diff --git a/frontend/src/views/ProjectView.vue b/frontend/src/views/ProjectView.vue
index efdb4a9..ad4d7c2 100644
--- a/frontend/src/views/ProjectView.vue
+++ b/frontend/src/views/ProjectView.vue
@@ -435,7 +435,7 @@ async function confirmDelete() {
 
     <!-- Nav bar -->
     <div class="page-header">
-      <router-link to="/projects" class="btn-back">← Projects</router-link>
+      <router-link to="/projects" class="btn-ghost">← Projects</router-link>
       <div class="page-header-actions">
         <template v-if="showStartPlanning">
           <input
@@ -451,7 +451,7 @@ async function confirmDelete() {
           >
             Create plan
           </button>
-          <button class="btn-share" @click="showStartPlanning = false; planTitle = ''">Cancel</button>
+          <button class="btn-secondary btn-compact" @click="showStartPlanning = false; planTitle = ''">Cancel</button>
         </template>
         <button
           v-else-if="project"
@@ -464,7 +464,7 @@ async function confirmDelete() {
           <LayoutGrid :size="16" />
           Workspace
         </router-link>
-        <button v-if="project && !showStartPlanning" class="btn-share" @click="showShare = true">Share</button>
+        <button v-if="project && !showStartPlanning" class="btn-secondary btn-compact" @click="showShare = true">Share</button>
         <button v-if="project && !showStartPlanning" class="btn-danger-outline" @click="showDeleteConfirm = true">Delete</button>
       </div>
     </div>
@@ -548,7 +548,7 @@ async function confirmDelete() {
               <option v-for="ds in designSystems" :key="ds.id" :value="ds.id">{{ ds.title }}</option>
             </select>
           </div>
-          <button class="btn-save-panel" @click="saveProject" :disabled="!editDirty || saving">
+          <button class="btn-primary" @click="saveProject" :disabled="!editDirty || saving">
             {{ saving ? "Saving..." : "Save Changes" }}
           </button>
         </aside>
@@ -581,7 +581,7 @@ async function confirmDelete() {
             </div>
             <template v-else>
               <div class="milestone-actions">
-                <button v-if="!showNewMilestone" class="btn-add-milestone" @click="showNewMilestone = true">
+                <button v-if="!showNewMilestone" class="btn-ghost btn-inline btn-add-milestone" @click="showNewMilestone = true">
                   + Milestone
                 </button>
                 <div v-else class="new-milestone-row">
@@ -593,10 +593,10 @@ async function confirmDelete() {
                     @keydown.enter="createMilestone"
                     @keydown.escape="showNewMilestone = false; newMilestoneTitle = ''"
                   />
-                  <button class="btn-ms-confirm" @click="createMilestone" :disabled="!newMilestoneTitle.trim() || creatingMilestone">
+                  <button class="btn-primary btn-compact" @click="createMilestone" :disabled="!newMilestoneTitle.trim() || creatingMilestone">
                     {{ creatingMilestone ? "..." : "Add" }}
                   </button>
-                  <button class="btn-ms-cancel" @click="showNewMilestone = false; newMilestoneTitle = ''">Cancel</button>
+                  <button class="btn-secondary btn-compact" @click="showNewMilestone = false; newMilestoneTitle = ''">Cancel</button>
                 </div>
               </div>
 
@@ -856,80 +856,9 @@ async function confirmDelete() {
   min-width: 200px;
 }
 
-.btn-back {
-  display: inline-flex;
-  align-items: center;
-  padding: 0.4rem 0.9rem;
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  background: none;
-  color: var(--color-text-secondary);
-  text-decoration: none;
-  font-size: 0.875rem;
-  transition: border-color 0.15s, color 0.15s;
-}
-.btn-back:hover { border-color: var(--color-primary); color: var(--color-primary); }
-
-/* Open Workspace: brand-moment CTA — keep accent gradient. Workspace is
-   the project's "central feature moment" — entering the focused workspace
-   is a Scribe-flavored action, not a plain operation. */
-.btn-workspace {
-  display: inline-flex;
-  align-items: center;
-  gap: 0.35rem;
-  padding: 0.45rem 1rem;
-  background: var(--gradient-cta);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  font-size: 0.875rem;
-  font-weight: 500;
-  text-decoration: none;
-  box-shadow: var(--glow-cta);
-  transition: box-shadow 0.15s, opacity 0.15s;
-}
 .btn-workspace:hover { box-shadow: var(--glow-cta-hover); opacity: 0.95; color: var(--fs-text-on-action); }
 
 /* Share: Bronze action-secondary — alternate path */
-.btn-share {
-  padding: 0.4rem 0.8rem;
-  background: var(--color-action-secondary);
-  border: none;
-  color: var(--fs-text-on-action);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.85rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-share:hover { background: var(--color-action-secondary-hover); }
-
-/* Delete project: Oxblood action-destructive ghost — outline form since
-   the actual confirm modal carries the filled destructive treatment */
-.btn-danger-outline {
-  padding: 0.4rem 0.8rem;
-  background: none;
-  border: 1px solid var(--color-action-destructive);
-  color: var(--color-action-destructive);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.85rem;
-  font-family: inherit;
-  transition: background 0.15s, color 0.15s;
-}
-.btn-danger-outline:hover { background: var(--color-action-destructive); color: var(--fs-text-on-action); }
-
-.error-msg { color: var(--color-danger); font-size: 0.9rem; }
-
-/* ── Project identity header ─────────────────────────────────── */
-.project-header { margin-bottom: 1rem; }
-
-.title-row {
-  display: flex;
-  align-items: center;
-  gap: 0.75rem;
-  margin-bottom: 0.4rem;
-}
 .project-title-input {
   flex: 1;
   font-size: 1.75rem;
@@ -1062,30 +991,6 @@ async function confirmDelete() {
 .edit-textarea { resize: vertical; }
 
 /* Save panel: Moss action-primary per Hybrid rule */
-.btn-save-panel {
-  padding: 0.45rem 0.9rem;
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.875rem;
-  font-weight: 500;
-  font-family: inherit;
-  width: 100%;
-  transition: background 0.15s;
-}
-.btn-save-panel:hover:not(:disabled) { background: var(--color-action-primary-hover); }
-.btn-save-panel:disabled { opacity: 0.45; cursor: default; }
-
-/* ── Content area ────────────────────────────────────────────── */
-.content-area { display: flex; flex-direction: column; gap: 0.75rem; }
-
-.tab-bar {
-  display: flex;
-  gap: 0;
-  border-bottom: 1px solid var(--color-border);
-}
 .tab-btn {
   display: inline-flex;
   align-items: center;
@@ -1148,49 +1053,6 @@ async function confirmDelete() {
 }
 .milestone-title-input:focus { outline: none; border-color: var(--color-primary); }
 /* Milestone confirm: Moss action-primary; Cancel: Bronze action-secondary */
-.btn-ms-confirm {
-  padding: 0.3rem 0.65rem;
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.78rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-ms-confirm:hover:not(:disabled) { background: var(--color-action-primary-hover); }
-.btn-ms-confirm:disabled { opacity: 0.5; cursor: default; }
-.btn-ms-cancel {
-  padding: 0.3rem 0.65rem;
-  background: var(--color-action-secondary);
-  border: none;
-  color: var(--fs-text-on-action);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.78rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-ms-cancel:hover { background: var(--color-action-secondary-hover); }
-
-/* ── Milestone group ─────────────────────────────────────────── */
-.milestone-group {
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-md);
-  overflow: hidden;
-  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
-}
-.milestone-header {
-  display: flex;
-  align-items: center;
-  gap: 0.5rem;
-  padding: 0.55rem 0.85rem;
-  background: var(--color-bg-secondary);
-  font-size: 0.85rem;
-  user-select: none;
-  border-bottom: 1px solid var(--color-border);
-}
 .milestone-header.clickable { cursor: pointer; }
 .milestone-header.clickable:hover { background: color-mix(in srgb, var(--color-primary) 4%, var(--color-bg-secondary)); }
 
diff --git a/frontend/src/views/TaskEditorView.vue b/frontend/src/views/TaskEditorView.vue
index f8e43c4..fedbcf9 100644
--- a/frontend/src/views/TaskEditorView.vue
+++ b/frontend/src/views/TaskEditorView.vue
@@ -645,7 +645,7 @@ useEditorGuards(dirty, save);
                   @focus="onParentFocus"
                   @blur="hideParentDropdown"
                 />
-                <button v-if="parentId" class="btn-clear-parent" @click="clearParentTask" title="Clear">&times;</button>
+                <button v-if="parentId" class="btn-text btn-clear-parent" @click="clearParentTask" title="Clear">&times;</button>
               </div>
               <div v-if="showParentDropdown" class="parent-dropdown">
                 <div v-if="parentSearchLoading" class="parent-dropdown-item parent-empty">Searching...</div>
@@ -666,7 +666,7 @@ useEditorGuards(dirty, save);
           <div v-if="isEditing" class="subtasks-section">
             <div class="subtasks-header">
               <span class="subtasks-label">Sub-tasks</span>
-              <button class="btn-add-subtask" @click="addingSubTask = !addingSubTask">+ Add</button>
+              <button class="btn-text" @click="addingSubTask = !addingSubTask">+ Add</button>
             </div>
             <div v-if="subTasksLoading" class="subtasks-loading">Loading...</div>
             <template v-else>
@@ -686,8 +686,8 @@ useEditorGuards(dirty, save);
                   @keydown.escape="addingSubTask = false; newSubTaskTitle = ''"
                   autofocus
                 />
-                <button class="btn-subtask-confirm" @click="createSubTask" :disabled="!newSubTaskTitle.trim()">Add</button>
-                <button class="btn-subtask-cancel" @click="addingSubTask = false; newSubTaskTitle = ''">Cancel</button>
+                <button class="btn-primary btn-compact" @click="createSubTask" :disabled="!newSubTaskTitle.trim()">Add</button>
+                <button class="btn-ghost btn-compact" @click="addingSubTask = false; newSubTaskTitle = ''">Cancel</button>
               </div>
             </template>
           </div>
@@ -921,23 +921,6 @@ useEditorGuards(dirty, save);
   text-transform: uppercase;
   letter-spacing: 0.04em;
 }
-.btn-add-subtask {
-  background: none;
-  border: none;
-  cursor: pointer;
-  color: var(--color-primary);
-  font-size: 0.78rem;
-  font-family: inherit;
-  padding: 0.1rem 0.2rem;
-}
-.btn-add-subtask:hover { opacity: 0.8; }
-.subtasks-loading { font-size: 0.78rem; color: var(--color-text-muted); }
-.subtask-row {
-  display: flex;
-  align-items: center;
-  gap: 0.4rem;
-  padding: 0.2rem 0;
-}
 .subtask-checkbox { flex-shrink: 0; cursor: pointer; }
 .subtask-title {
   font-size: 0.83rem;
@@ -968,33 +951,6 @@ useEditorGuards(dirty, save);
   font-family: inherit;
 }
 .subtask-input:focus { outline: none; border-color: var(--color-primary); }
-.btn-subtask-confirm {
-  padding: 0.25rem 0.5rem;
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.78rem;
-  font-family: inherit;
-}
-.btn-subtask-confirm:disabled { opacity: 0.5; cursor: default; }
-.btn-subtask-cancel {
-  padding: 0.25rem 0.5rem;
-  background: none;
-  border: 1px solid var(--color-border);
-  color: var(--color-text-secondary);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.78rem;
-  font-family: inherit;
-}
-
-/* Streaming preview */
-.stream-label {
-  font-size: 0.8rem;
-  color: var(--color-text-muted);
-}
 .stream-preview {
   border: 1px solid var(--color-input-border);
   border-radius: var(--radius-sm);
@@ -1125,24 +1081,4 @@ useEditorGuards(dirty, save);
   color: var(--color-primary, #6366f1);
   font-style: normal;
 }
-.btn-reconsolidate {
-  margin-left: auto;
-  padding: 0.25rem 0.7rem;
-  font-size: 0.78rem;
-  font-style: normal;
-  color: inherit;
-  background: transparent;
-  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.12));
-  border-radius: 999px;
-  cursor: pointer;
-  transition: background 120ms ease;
-}
-.btn-reconsolidate:hover:not(:disabled) {
-  background: rgba(99, 102, 241, 0.12);
-  border-color: var(--color-primary, #6366f1);
-}
-.btn-reconsolidate:disabled {
-  opacity: 0.5;
-  cursor: progress;
-}
 </style>
\ No newline at end of file
diff --git a/frontend/src/views/TaskViewerView.vue b/frontend/src/views/TaskViewerView.vue
index 44e7fbf..2cc007d 100644
--- a/frontend/src/views/TaskViewerView.vue
+++ b/frontend/src/views/TaskViewerView.vue
@@ -263,29 +263,29 @@ const subTaskProgress = computed(() => {
         <div class="toolbar">
           <router-link
             :to="store.currentTask.project_id ? `/projects/${store.currentTask.project_id}` : '/tasks'"
-            class="btn-back"
+            class="btn-ghost"
           >{{ store.currentTask.project_id ? "← Project" : "← Tasks" }}</router-link>
           <router-link
             :to="`/tasks/${store.currentTask.id}/edit`"
-            class="btn-edit"
+            class="btn-primary"
           >
             Edit
           </router-link>
           <button
             v-if="advanceLabel"
-            class="btn-advance"
+            class="btn-primary"
             @click="advanceStatus"
           >
             {{ advanceLabel }}
           </button>
           <button
-            class="btn-convert"
+            class="btn-secondary btn-compact"
             @click="convertToNote"
             :disabled="converting"
           >
             {{ converting ? "Converting..." : "Convert to Note" }}
           </button>
-          <button class="btn-share" @click="showShare = true">Share</button>
+          <button class="btn-secondary btn-compact" @click="showShare = true">Share</button>
         </div>
 
         <!-- Breadcrumb: parent task → project → milestone -->
@@ -475,83 +475,6 @@ const subTaskProgress = computed(() => {
   gap: 0.75rem;
   margin-bottom: 0.75rem;
 }
-.btn-back {
-  display: inline-flex;
-  align-items: center;
-  padding: 0.45rem 1rem;
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  background: none;
-  color: var(--color-text-secondary);
-  text-decoration: none;
-  cursor: pointer;
-  font-size: 0.9rem;
-}
-.btn-back:hover {
-  border-color: var(--color-primary);
-  color: var(--color-primary);
-}
-/* Edit + Advance: Moss action-primary — both are "operating the software"
-   workflow actions, not brand moments. */
-.btn-edit,
-.btn-advance {
-  display: inline-flex;
-  align-items: center;
-  padding: 0.45rem 1.1rem;
-  border: none;
-  border-radius: var(--radius-sm);
-  background: var(--color-action-primary);
-  color: var(--fs-text-on-action);
-  text-decoration: none;
-  cursor: pointer;
-  font-size: 0.875rem;
-  font-weight: 500;
-  transition: background 0.15s;
-}
-.btn-edit:hover,
-.btn-advance:hover {
-  background: var(--color-action-primary-hover);
-  color: var(--fs-text-on-action);
-}
-/* Convert + Share: Bronze action-secondary — alternate paths */
-.btn-convert {
-  margin-left: auto;
-  padding: 0.3rem 0.75rem;
-  background: var(--color-action-secondary);
-  color: var(--fs-text-on-action);
-  border: none;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  font-size: 0.85rem;
-  transition: background 0.15s;
-}
-.btn-convert:hover { background: var(--color-action-secondary-hover); }
-.btn-convert:disabled {
-  opacity: 0.6;
-  cursor: default;
-}
-
-.btn-share {
-  padding: 0.3rem 0.75rem;
-  background: var(--color-action-secondary);
-  border: none;
-  border-radius: var(--radius-sm);
-  color: var(--fs-text-on-action);
-  cursor: pointer;
-  font-size: 0.85rem;
-  font-family: inherit;
-  transition: background 0.15s;
-}
-.btn-share:hover { background: var(--color-action-secondary-hover); }
-
-.task-title {
-  font-family: "Fraunces", Georgia, serif;
-  font-size: 2rem;
-  font-weight: 500;
-  line-height: 1.2;
-  margin: 0.25rem 0 0.5rem;
-  color: var(--color-text);
-}
 
 .meta {
   display: flex;
diff --git a/frontend/src/views/TrashView.vue b/frontend/src/views/TrashView.vue
index 2033d19..8c087e3 100644
--- a/frontend/src/views/TrashView.vue
+++ b/frontend/src/views/TrashView.vue
@@ -25,7 +25,7 @@ onMounted(() => store.fetchTrash());
       <h1>Trash</h1>
       <button
         v-if="store.batches.length"
-        class="btn-empty"
+        class="btn-ghost btn-compact"
         @click="empty"
       >Empty trash</button>
     </header>
@@ -52,8 +52,8 @@ onMounted(() => store.fetchTrash());
           </div>
         </div>
         <div class="batch-actions">
-          <button class="btn-restore" @click="store.restore(b.batch_id)">Restore</button>
-          <button class="btn-purge" @click="purge(b.batch_id)">Delete permanently</button>
+          <button class="btn-ghost btn-compact btn-restore" @click="store.restore(b.batch_id)">Restore</button>
+          <button class="btn-ghost btn-compact btn-purge" @click="purge(b.batch_id)">Delete permanently</button>
         </div>
       </li>
     </ul>
@@ -64,25 +64,11 @@ onMounted(() => store.fetchTrash());
 .trash-page { max-width: 900px; margin: 0 auto; padding: 1.5rem; }
 .trash-header { display: flex; align-items: center; justify-content: space-between; }
 .trash-header h1 { font-family: Fraunces, serif; font-style: italic; margin: 0; }
-.btn-empty {
-  background: none; border: 1px solid var(--color-border, #2a2a2e);
-  color: inherit; border-radius: 6px; padding: 0.4rem 0.8rem; cursor: pointer;
-}
-.btn-empty:hover { border-color: var(--color-danger, #ef4444); color: var(--color-danger, #ef4444); }
-.trash-note { opacity: 0.7; font-size: 0.9em; margin: 0.5rem 0 1.5rem; }
-.trash-loading, .trash-empty { opacity: 0.6; font-style: italic; padding: 2rem 0; }
-.batch-list { list-style: none; padding: 0; margin: 0; }
-.batch {
-  display: flex; align-items: center; justify-content: space-between;
-  gap: 1rem; padding: 0.85rem 1rem; margin-bottom: 0.5rem;
-  background: var(--color-surface, #18181b); border-radius: 8px;
-  border-left: 2px solid var(--color-border, #2a2a2e);
-}
 .batch-summary { font-weight: 500; }
 .batch-count { opacity: 0.6; font-weight: 400; font-size: 0.9em; margin-left: 0.35rem; }
 .batch-meta { font-size: 0.82em; opacity: 0.6; margin-top: 0.25rem; }
 .batch-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }
 .batch-actions button { border-radius: 6px; padding: 0.35rem 0.7rem; cursor: pointer; border: 1px solid var(--color-border, #2a2a2e); background: none; color: inherit; }
-.btn-restore:hover { border-color: var(--color-primary, #6366f1); color: var(--color-primary, #6366f1); }
-.btn-purge:hover { border-color: var(--color-danger, #ef4444); color: var(--color-danger, #ef4444); }
+.btn-restore:hover { border-color: var(--color-action-primary); color: var(--color-action-primary); }
+.btn-purge:hover { border-color: var(--color-action-destructive); color: var(--color-action-destructive); }
 </style>