/**
 * AI聊天模块 - 主内容区域样式
 * 包含主内容区布局、展开侧边栏按钮样式
 */

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    height: 100vh;
    overflow-y: auto;
    transition: all var(--transition-speed);
}

.expand-sidebar-btn {
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 100;
    cursor: pointer;
    color: var(--text-secondary);
    display: none;
    font-size: 1.1rem;
    padding: 10px;
    border-radius: 8px;
    background-color: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.expand-sidebar-btn:hover {
    background-color: var(--hover-color);
    color: var(--primary-color);
}

.sidebar.collapsed ~ .main-content .expand-sidebar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 响应式设计 - 小屏幕适配 */
@media (max-width: 768px) {
    .main-content {
        padding: 16px;
    }
    
    .sidebar.collapsed ~ .main-content .expand-sidebar-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}