diff --git a/extension/src/popup/styles.css b/extension/src/popup/styles.css
index 897ceb9..7ebfa71 100644
--- a/extension/src/popup/styles.css
+++ b/extension/src/popup/styles.css
@@ -1508,3 +1508,45 @@ textarea {
     0 1px 0 rgba(255, 255, 255, 0.03) inset,
     0 6px 18px rgba(0, 0, 0, 0.35);
 }
+
+/* Phase 2B: button hierarchy. Existing .btn class kept for backwards
+   compatibility; .btn-primary and .btn-secondary express clearer intent
+   and are used in updated views. */
+.btn-primary {
+  background: var(--gold-base);
+  color: var(--bg-page);
+  border: none;
+  padding: 9px 14px;
+  font-size: 12px;
+  font-weight: 600;
+  border-radius: 6px;
+  font-family: inherit;
+  cursor: pointer;
+  letter-spacing: 0.3px;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  transition: background-color 0.15s;
+}
+.btn-primary:hover { background: var(--gold-stroke); }
+.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
+.btn-primary:focus-visible {
+  outline: none;
+  box-shadow: var(--focus-ring);
+}
+
+.btn-secondary {
+  background: transparent;
+  border: 1px solid rgba(255, 255, 255, 0.06);
+  color: var(--text-muted);
+  padding: 6px 12px;
+  font-size: 11px;
+  border-radius: 5px;
+  font-family: inherit;
+  cursor: pointer;
+}
+.btn-secondary:hover { border-color: rgba(255, 255, 255, 0.12); color: var(--text); }
+.btn-secondary:focus-visible {
+  outline: none;
+  box-shadow: var(--focus-ring);
+}
diff --git a/extension/src/vault/vault.css b/extension/src/vault/vault.css
index 2d63e40..08de923 100644
--- a/extension/src/vault/vault.css
+++ b/extension/src/vault/vault.css
@@ -1538,3 +1538,45 @@ textarea {
     0 1px 0 rgba(255, 255, 255, 0.03) inset,
     0 6px 18px rgba(0, 0, 0, 0.35);
 }
+
+/* Phase 2B: button hierarchy. Existing .btn class kept for backwards
+   compatibility; .btn-primary and .btn-secondary express clearer intent
+   and are used in updated views. */
+.btn-primary {
+  background: var(--gold-base);
+  color: var(--bg-page);
+  border: none;
+  padding: 9px 14px;
+  font-size: 12px;
+  font-weight: 600;
+  border-radius: 6px;
+  font-family: inherit;
+  cursor: pointer;
+  letter-spacing: 0.3px;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  transition: background-color 0.15s;
+}
+.btn-primary:hover { background: var(--gold-stroke); }
+.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
+.btn-primary:focus-visible {
+  outline: none;
+  box-shadow: var(--focus-ring);
+}
+
+.btn-secondary {
+  background: transparent;
+  border: 1px solid rgba(255, 255, 255, 0.06);
+  color: var(--text-muted);
+  padding: 6px 12px;
+  font-size: 11px;
+  border-radius: 5px;
+  font-family: inherit;
+  cursor: pointer;
+}
+.btn-secondary:hover { border-color: rgba(255, 255, 255, 0.12); color: var(--text); }
+.btn-secondary:focus-visible {
+  outline: none;
+  box-shadow: var(--focus-ring);
+}