/* 主应用布局 - 基于工作示例的grid布局 + 可拖动分割线 */
:host {
  display: block;
  width: 100vw;
  height: 100vh;
  background-color: #f9fafb; /* gray-50 */
}

/* Grid布局容器 */
.app-layout {
  display: grid;
  grid-template-columns: 320px 8px 1fr; /* 默认宽度 */
  height: 100vh;
  overflow: hidden;
  font-family: system-ui, -apple-system, sans-serif;
}

/* 左侧面板 */
.left-panel {
  background: white;
  color: #333;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  border-right: 1px solid #e0e0e0;
  box-shadow: 1px 0 3px rgba(0, 0, 0, 0.05);
}

.logo-section {
  padding: 20px;
  border-bottom: 1px solid #e0e0e0;
  background: linear-gradient(to right, #f8f9fa, #e9ecef);
}

.logo-section h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: #2c3e50;
  display: flex;
  align-items: center;
}

.logo-section mat-icon {
  color: #3b82f6;
}

.tree-container {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
}

.footer-info {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid #e0e0e0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f8f9fa;
}

.footer-info .flex {
  display: flex;
  align-items: center;
  transition: all 0.2s;
}

.footer-info .flex:hover {
  background-color: #e9ecef;
}

.footer-info mat-icon {
  font-size: 18px;
}

.footer-info span {
  color: #6c757d;
  font-size: 14px;
}

/* 可拖动分割线 */
.splitter {
  background: #e5e7eb;
  cursor: col-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
  position: relative;
  user-select: none;
}

.splitter:hover,
.splitter.dragging {
  background: #3b82f6;
}

.splitter-handle {
  width: 2px;
  height: 40px;
  background: #9ca3af;
  border-radius: 1px;
  transition: background-color 0.2s;
}

.splitter:hover .splitter-handle,
.splitter.dragging .splitter-handle {
  background: white;
}

/* 右侧面板 */
.right-panel {
  background: #f8f9fa;
  overflow: hidden;
  position: relative;
}

/* 关键：滚动容器 - sticky-header检测此容器 */
.content-container {
  height: 100%;
  overflow-y: auto;
  background: white;
}

/* 滚动条样式 */
.content-container::-webkit-scrollbar {
  width: 8px;
}

.content-container::-webkit-scrollbar-track {
  background: #f1f2f6;
  border-radius: 4px;
}

.content-container::-webkit-scrollbar-thumb {
  background: #bdc3c7;
  border-radius: 4px;
}

.content-container::-webkit-scrollbar-thumb:hover {
  background: #95a5a6;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 240px 8px 1fr;
  }
}

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 8px auto;
  }
  
  .left-panel {
    max-height: 300px;
    border-right: none;
    border-bottom: 1px solid #e0e0e0;
  }
  
  .logo-section {
    padding: 16px;
  }
  
  .splitter {
    cursor: row-resize;
  }
  
  .splitter-handle {
    width: 40px;
    height: 2px;
  }
}