/* 左侧侧边栏样式 */
.sidebar-unit {
    width: var(--sidebar-w);
    height: 100vh;
    background: rgba(255, 255, 255, 0.9);
    border-right: 1px solid #E2E8F0;
    display: flex;
    flex-direction: column;
    padding: 0;
    z-index: 20;
    position: relative;
    transition: width 0.3s ease;
    overflow: hidden;
}

.sidebar-unit.collapsed {
    width: var(--sidebar-w-collapsed);
}

.sidebar-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-header {
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #E2E8F0;
    min-height: 64px;
}

.sidebar-unit.collapsed .sidebar-header {
    justify-content: space-between;
    padding: 16px 8px;
    flex-direction: column;
    gap: 8px;
}

.sidebar-unit.collapsed .brand-block {
    justify-content: center;
    width: 100%;
}

.sidebar-unit.collapsed .sidebar-toggle {
    position: absolute;
    top: 8px;
    right: 8px;
}

.user-avatar-header {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    display: none;
    flex-shrink: 0;
}

.sidebar-unit.collapsed .user-avatar-header {
    display: none;
}

/* 未登录时，即使收起也不显示头像 */
.sidebar-unit.collapsed .user-avatar-header[data-logged-out="true"] {
    display: none !important;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.brand-logo {
    width: auto;
    height: 40px;
    display: block;
    object-fit: contain;
    flex-shrink: 0;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748B;
    transition: all 0.2s;
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: #F1F5F9;
    color: var(--trace-active);
}

.sidebar-toggle svg {
    width: 18px;
    height: 18px;
}

.sidebar-unit.collapsed .brand-logo {
    display: none;
}

/* 收起时显示正方形logo */
.sidebar-unit.collapsed .brand-block::after {
    content: '';
    display: block;
    width: 32px;
    height: 32px;
    background-image: url('https://chat-web-1253214834.cos.ap-beijing.myqcloud.com/image/a98360672e312beb0fcc5fdaaf57a568.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* 搜索框 */
.sidebar-search {
    padding: 12px 16px;
    border-bottom: 1px solid #E2E8F0;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    padding: 8px 12px 8px 36px;
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    background: #F8FAFC;
    font-size: 13px;
    color: #334155;
    transition: all 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--trace-active);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(109, 213, 232, 0.1);
}

.search-icon {
    position: absolute;
    left: 12px;
    width: 16px;
    height: 16px;
    color: #94A3B8;
    pointer-events: none;
}

.sidebar-unit.collapsed .sidebar-search {
    display: none;
}

/* 菜单项 */
.menu-section {
    padding: 8px 0;
}

.sidebar-unit.collapsed .menu-section.project-section {
    display: none;
}

.sidebar-unit.collapsed .menu-section {
    padding: 4px 0;
}

.sidebar-unit.collapsed .menu-item {
    padding: 12px;
    margin: 2px 0;
}

.menu-section-title {
    padding: 8px 16px 4px;
    font-size: 12px;
    font-weight: 600;
    color: #94A3B8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-unit.collapsed .menu-section-title {
    display: none;
}

.menu-item {
    position: relative;
    padding: 10px 16px;
    cursor: pointer;
    color: #64748B;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: 0;
}

.menu-item:hover {
    background: #F1F5F9;
    color: var(--trace-active);
}

.menu-item.active {
    background: #F1F5F9;
    color: var(--trace-active);
}

.menu-item-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.menu-item-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.menu-item-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 2;
}

/* 设计模式图标确保与其他图标视觉大小一致 */
#designMode .menu-item-icon {
    width: 20px;
    height: 20px;
}

#designMode .menu-item-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 2;
    display: block;
    /* 确保SVG内容充分利用空间，视觉上与其他图标一致 */
    overflow: visible;
}

/* 
 * 设计模式菜单入口显示控制
 * 
 * 当前状态：隐藏设计模式菜单入口（保留路由访问功能）
 * 
 * 如何恢复显示：
 * 方法1：注释掉下面的CSS规则（推荐）
 * 方法2：在body或.sidebar-unit上添加.show-design-mode类，即可显示设计模式入口
 * 
 * 注意：HTML代码和JavaScript路由功能均保留，可直接通过访问 design-mode.html 进入设计模式页面
 */
/* 
.menu-section:has(#designMode) {
    display: none;
}
*/

/* 如果需要显示设计模式入口，取消下面这行注释，并注释掉上面的规则 */
.show-design-mode .menu-section:has(#designMode),
.menu-section:has(#designMode) {
    display: block;
}

.menu-item-text {
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 6px;
}

.menu-item-badge {
    font-size: 10px;
    padding: 2px 6px;
    background: #FEF3C7;
    color: #92400E;
    border-radius: 10px;
    font-weight: 500;
    flex-shrink: 0;
    margin-left: 0;
}

.sidebar-unit.collapsed .menu-item {
    justify-content: center;
    padding: 10px;
}

.sidebar-unit.collapsed .menu-item-text {
    display: none;
}

/* 项目列表 */
.project-list {
    max-height: 300px;
    overflow-y: auto;
}

.project-item {
    padding: 8px 16px;
    cursor: pointer;
    color: #64748B;
    font-size: 13px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    position: relative;
}

.project-item:hover {
    background: #F1F5F9;
    color: var(--trace-active);
}

.project-item.active {
    background: rgba(109, 213, 232, 0.1);
    color: var(--trace-active);
}

.project-item-icon {
    display: none; /* 隐藏会话项左侧的图标 */
}

/* 三个点按钮 */
.project-item-more {
    margin-left: auto;
    width: 20px;
    height: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #94A3B8;
    border-radius: 4px;
    transition: all 0.2s;
    flex-shrink: 0;
    opacity: 0;
    transform: scale(0.8);
}

.project-item:hover .project-item-more {
    display: flex;
    opacity: 1;
    transform: scale(1);
}

.project-item-more:hover {
    background: rgba(148, 163, 184, 0.1);
    color: #64748B;
}

.project-item-more svg {
    width: 16px;
    height: 16px;
}

/* 气泡菜单 */
.project-item-menu {
    position: fixed;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 4px;
    min-width: 120px;
    z-index: 10001;
    display: none;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.2s, transform 0.2s;
    border: 1px solid #E2E8F0;
}

.project-item-menu.show {
    display: block;
    opacity: 1;
    transform: scale(1);
}

.project-item-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 6px;
    font-size: 13px;
    color: #334155;
    transition: background 0.2s;
}

.project-item-menu-item:hover {
    background: #F1F5F9;
}

.project-item-menu-item.delete {
    color: #EF4444;
}

.project-item-menu-item.delete:hover {
    background: #FEE2E2;
}

.project-item-menu-item-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.project-item-menu-item-icon svg {
    width: 100%;
    height: 100%;
}

.sidebar-unit.collapsed .project-item {
    padding: 8px;
    justify-content: center;
}

.sidebar-unit.collapsed .project-item-more,
.sidebar-unit.collapsed .project-item-menu {
    display: none !important;
}

.sidebar-unit.collapsed .project-item-icon,
.sidebar-unit.collapsed .project-item-text {
    display: none;
}

.view-all-link {
    padding: 8px 16px;
    cursor: pointer;
    color: var(--trace-active);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
}

.view-all-link:hover {
    background: #F1F5F9;
}

/* 用户信息 */
.user-block {
    padding: 16px;
    border-top: 1px solid #E2E8F0;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.5);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--trace-active) 0%, #4DB6AC 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 2px;
}

.user-license {
    font-size: 12px;
    color: #94A3B8;
}

.sidebar-unit.collapsed .user-info {
    display: none;
}

.sidebar-unit.collapsed .user-block {
    justify-content: center;
    padding: 16px 8px;
}

.sidebar-unit.collapsed .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 14px;
}

/* Tooltip样式 */
.menu-item-tooltip {
    position: fixed;
    padding: 6px 10px;
    background: #1E293B;
    color: #fff;
    font-size: 12px;
    border-radius: 6px;
    white-space: nowrap;
    z-index: 1000;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.menu-item-tooltip.show {
    opacity: 1;
    visibility: visible;
}

.menu-item-tooltip::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 5px solid transparent;
    border-right-color: #1E293B;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar-unit {
        position: fixed;
        left: -100%;
        z-index: 50;
        transition: left 0.3s ease;
    }
    
    .sidebar-unit.mobile-open {
        left: 0;
    }
}