/**
 * AI聊天模块 - 侧边栏样式
 * 包含侧边栏布局、收起/展开动画、历史记录列表、收藏列表等样式
 */

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    padding: 16px;
    transition: width var(--transition-speed) ease, padding var(--transition-speed) ease, opacity var(--transition-speed);
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
    overflow: hidden;
    white-space: nowrap;
}

/* 响应式设计 - 小屏幕自动隐藏侧边栏 */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        z-index: 1000;
        box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
        transform: translateX(-100%);
        transition: transform var(--transition-speed) ease;
    }
    
    .sidebar:not(.collapsed) {
        transform: translateX(0);
    }
    
    .sidebar.collapsed {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        opacity: 1;
        padding: 16px;
        border-right: 1px solid var(--border-color);
    }
}

.sidebar.collapsed {
    width: 0;
    padding-left: 0;
    padding-right: 0;
    opacity: 0;
    border: none;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.logo {
    font-weight: bold;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}

.logo-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.collapse-btn {
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 1rem;
}

.new-chat-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.new-chat-btn:hover {
    background-color: var(--hover-color);
}

.history-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-left: 8px;
}

.history-list {
    flex: 1;
    overflow-y: auto;
}

.history-item {
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.2s;
}

.history-item:hover .history-item-actions {
    opacity: 1;
}

.rename-btn,
.pin-btn,
.delete-btn {
    padding: 4px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
    font-size: 0.8rem;
}

.rename-btn:hover,
.pin-btn:hover,
.delete-btn:hover {
    background-color: var(--hover-color);
    color: var(--text-color);
}

.pinned-icon {
    color: var(--primary-color);
    font-size: 0.8rem;
    margin-right: 4px;
}

.history-item:hover {
    background-color: var(--hover-color);
    color: var(--text-color);
}

/* 遮罩层样式 */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}