.layout-vtabs { display: grid; grid-template-columns: 240px 1fr 240px; }
.editor-split { display: flex; flex: 1; min-height: 0; }
.v-tabs { display: flex; flex-direction: column; gap: 4px; padding: 8px 6px; border-right: 1px solid var(--border); background: #fafcff; width: 160px; overflow: auto; }
.v-tab { border: 1px solid transparent; border-radius: 8px; background: transparent; padding: 8px 8px; font-size: 11px; text-align: left; cursor: pointer; color: var(--muted); line-height: 1.3; }
.v-tab.active { background: #dbeafe; border-color: #93c5fd; color: #1e3a8a; font-weight: 600; }
.v-tab:disabled { opacity: .4; cursor: not-allowed; }
.workspace { display: flex; flex-direction: column; }
.editor-mock { flex: 1; min-height: 380px; border: 0; border-radius: 0; }