merge: resolve conflicts between feat/responsive-layout and master

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/styles/pages/studio-layout.css

@@ -376,23 +376,19 @@
   margin-top: 8px;
 }
 
-.studio-result-actions--with-clear {
-  grid-template-columns: repeat(3, minmax(0, 1fr));
-}
-
 .studio-result-actions button {
   display: inline-flex;
   min-width: 0;
-  min-height: 36px;
+  min-height: 48px;
   align-items: center;
   justify-content: center;
-  gap: 6px;
+  gap: 8px;
   border: 1px solid var(--border-subtle);
   border-radius: var(--radius-xs);
   background: var(--bg-inset);
   color: var(--fg-body);
   font: inherit;
-  font-size: 12px;
+  font-size: 14px;
   font-weight: 750;
   cursor: pointer;
   transition: border-color 140ms ease, background 140ms ease, color 140ms ease;