完成世界书、骰子、apiconfig页面处理

frontend/src/components/SideBarLeft/SideBarLeft.css

@@ -0,0 +1,77 @@
+.sidebar-left {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.sidebar-tabs {
+  display: flex;
+  border-bottom: 1px solid var(--color-border);
+  background-color: var(--color-bg-tertiary);
+  padding: 0 var(--spacing-sm);
+  flex-shrink: 0;
+}
+
+.tab-button {
+  flex: 1;
+  padding: var(--spacing-md) var(--spacing-sm);
+  background: none;
+  border: none;
+  border-bottom: 2px solid transparent;
+  cursor: pointer;
+  transition: all var(--transition-normal);
+  font-size: 13px;
+  color: var(--color-text-secondary);
+  position: relative;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--spacing-xs);
+  font-weight: 500;
+}
+
+.tab-button:hover {
+  background-color: var(--color-bg-elevated);
+  color: var(--color-text-primary);
+}
+
+.tab-button.active {
+  color: var(--color-accent);
+  font-weight: 600;
+  border-bottom-color: var(--color-accent);
+  background: var(--color-accent-ultra-light);
+}
+
+.sidebar-content {
+  flex: 1;
+  overflow-y: auto;
+  padding: var(--spacing-lg);
+  min-height: 0;
+}
+
+/* Tab placeholder for empty states */
+.tab-placeholder {
+  padding: var(--spacing-lg);
+  height: 100%;
+  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  text-align: center;
+  color: var(--color-text-muted);
+}
+
+.tab-placeholder h3 {
+  font-size: 1rem;
+  font-weight: 600;
+  color: var(--color-text-primary);
+  margin-bottom: var(--spacing-sm);
+}
+
+.tab-placeholder p {
+  font-size: 0.85rem;
+  line-height: 1.5;
+}