/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    /* 改为白色背景 */
    background: #f8fafc;
    color: #2d3748;
    height: 100vh;
}

/* 应用容器 */
.app-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    /* 确保容器不会超出视口 */
    overflow: hidden;
}

/* 顶部导航栏 */
.header {
    background: white;
    border-bottom: 1px solid #e2e8f0;
    padding: 1rem 2rem;
    flex-shrink: 0;
    /* 确保头部不会被压缩 */
    min-height: auto;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 按钮样式 */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: #4299e1;
    color: white;
}

.btn-primary:hover {
    background: #3182ce;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.3);
}

.btn-secondary {
    background: #e2e8f0;
    color: #4a5568;
}

.btn-secondary:hover {
    background: #cbd5e0;
    transform: translateY(-1px);
}

/* 状态指示器 */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #718096;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.status-dot.online {
    background: #48bb78;
    box-shadow: 0 0 0 2px rgba(72, 187, 120, 0.3);
}

.status-dot.offline {
    background: #f56565;
    box-shadow: 0 0 0 2px rgba(245, 101, 101, 0.3);
}

.status-dot.connecting {
    background: #ed8936;
    box-shadow: 0 0 0 2px rgba(237, 137, 54, 0.3);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 聊天容器 - 修复高度计算 */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
    padding: 0 2rem;
    /* 确保容器高度正确计算 */
    min-height: 0;
    overflow: hidden;
}

/* 聊天消息区域 - 修复滚动 */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    /* 确保可以滚动 */
    min-height: 0;
    /* 优化滚动性能 */
    scroll-behavior: smooth;
}

/* 欢迎消息 */
.welcome-message {
    text-align: center;
    padding: 3rem 2rem;
    background: white;
    border-radius: 1rem;
    margin: 2rem 0;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.welcome-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.welcome-message h2 {
    color: #2d3748;
    margin-bottom: 1rem;
    font-weight: 600;
}

.welcome-message p {
    color: #718096;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

/* 消息气泡 */
.message {
    display: flex;
    margin-bottom: 1rem;
    opacity: 0;
    animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    justify-content: flex-end;
}

.message.ai {
    justify-content: flex-start;
}

.message-bubble {
    max-width: 75%;
    padding: 1rem 1.25rem;
    border-radius: 1rem;
    word-wrap: break-word;
    line-height: 1.5;
    /* 确保长内容可以换行 */
    word-break: break-word;
    overflow-wrap: break-word;
    position: relative;
}

.message.user .message-bubble {
    background: #4299e1;
    color: white;
    border-bottom-right-radius: 0.25rem;
    box-shadow: 0 1px 3px rgba(66, 153, 225, 0.3);
}

.message.ai .message-bubble {
    background: white;
    color: #2d3748;
    border-bottom-left-radius: 0.25rem;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* 消息时间戳 */
.message-timestamp {
    font-size: 0.75rem;
    color: #a0aec0;
    margin-top: 0.25rem;
    text-align: right;
}

.message.ai .message-timestamp {
    text-align: left;
}

/* AI光标动画 */
.ai-cursor {
    animation: blink 1s infinite;
    color: #4299e1;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* 工具执行状态 */
.tool-status {
    background: #fef5e7;
    border: 1px solid #f6ad55;
    border-radius: 0.75rem;
    padding: 1rem;
    margin: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 100%;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(246, 173, 85, 0.2);
}

/* 新的工具调用会话样式 */
.tool-session {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    margin: 1rem 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.tool-session.completed {
    border-color: #48bb78;
    background: #f0fff4;
}

.tool-session.collapsed .tool-session-content {
    display: none;
}

.tool-session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: #f1f5f9;
    border-bottom: 1px solid #e2e8f0;
    cursor: pointer;
}

.tool-session.completed .tool-session-header {
    background: #f0fff4;
    border-bottom-color: #c6f6d5;
}

.tool-session-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: #2d3748;
}

.tool-session-icon {
    font-size: 1.125rem;
}

.tool-session-count {
    background: #4299e1;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.tool-session-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    color: #718096;
    transition: all 0.2s ease;
}

.tool-session-toggle:hover {
    background: #e2e8f0;
    color: #2d3748;
}

.toggle-icon {
    font-size: 0.875rem;
    transition: transform 0.2s ease;
}

.tool-session-content {
    padding: 1rem 1.25rem;
}

.tool-session-progress {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: #f7fafc;
    border-radius: 0.5rem;
    border: 1px solid #e2e8f0;
}

.progress-text {
    font-size: 0.875rem;
    color: #4a5568;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 0.5rem;
    background: #e2e8f0;
    border-radius: 0.25rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #4299e1;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
    width: 0%;
}

.tool-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tool-item {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.tool-item.executing {
    border-color: #4299e1;
    background: #ebf8ff;
}

.tool-item.completed {
    border-color: #48bb78;
    background: #f0fff4;
}

.tool-item.error {
    border-color: #f56565;
    background: #fed7d7;
}

.tool-item-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.tool-status {
    font-size: 1rem;
    flex-shrink: 0;
}

.tool-name {
    flex: 1;
    color: #2d3748;
    font-size: 0.875rem;
}

.tool-progress, .tool-size {
    font-size: 0.75rem;
    color: #718096;
    background: rgba(113, 128, 150, 0.1);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.tool-item-details {
    font-size: 0.75rem;
    color: #718096;
    margin-bottom: 0.5rem;
}

.tool-args {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    background: #f7fafc;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    word-break: break-all;
}

.tool-item-result {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.75rem;
    background: #f7fafc;
    padding: 0.75rem;
    border-radius: 0.375rem;
    border: 1px solid #e2e8f0;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: break-word;
    max-height: 300px;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.tool-item-result.collapsible {
    max-height: 60px;
    cursor: pointer;
}

.tool-item-result.collapsed {
    max-height: 60px;
    overflow: hidden;
}

.tool-item-result.error-content {
    color: #e53e3e;
    background: #fed7d7;
    border-color: #feb2b2;
}

.tool-result-toggle {
    background: none;
    border: 1px solid #e2e8f0;
    color: #718096;
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.tool-result-toggle:hover {
    background: #f7fafc;
    border-color: #cbd5e0;
    color: #4a5568;
}

.tool-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid #4299e1;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    flex-shrink: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 旧的工具结果样式 - 保留兼容性 */
.tool-result {
    background: #f0fff4;
    border: 1px solid #68d391;
    border-radius: 0.75rem;
    padding: 1rem;
    margin: 0.5rem 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
    /* 确保长内容可以换行 */
    word-break: break-word;
    overflow-wrap: break-word;
    position: relative;
    box-shadow: 0 1px 3px rgba(104, 211, 145, 0.2);
    transition: all 0.3s ease;
}

.tool-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 600;
    color: #2d3748;
}

.tool-result-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tool-result-status {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
}

.tool-result-size {
    font-size: 0.75rem;
    color: #718096;
    padding: 0.125rem 0.375rem;
    background: rgba(113, 128, 150, 0.1);
    border-radius: 0.25rem;
}

.tool-result-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: none;
    border: 1px solid #68d391;
    color: #38a169;
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    font-weight: 500;
}

.tool-result-toggle:hover {
    background: #38a169;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(56, 161, 105, 0.2);
}

.tool-result-toggle-icon {
    font-size: 0.625rem;
    transition: transform 0.2s ease;
}

.tool-result.collapsed .tool-result-toggle-icon {
    transform: rotate(-90deg);
}



/* 输入区域 - 修复布局 */
.chat-input-container {
    flex-shrink: 0;
    padding: 1.5rem 0 2rem 0;
    /* 确保输入区域始终可见 */
    background: transparent;
}

.chat-input-wrapper {
    background: white;
    border-radius: 1rem;
    padding: 1rem;
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    /* 确保输入框容器不会被压缩 */
    min-height: auto;
    transition: box-shadow 0.2s ease;
}

.chat-input-wrapper:focus-within {
    box-shadow: 0 4px 20px rgba(66, 153, 225, 0.2);
    border-color: #4299e1;
}

#messageInput {
    flex: 1;
    border: none;
    background: transparent;
    resize: none;
    font-size: 1rem;
    line-height: 1.5;
    min-height: 1.5rem;
    /* 限制最大高度，避免输入框过大 */
    max-height: 120px;
    padding: 0.5rem 0;
    font-family: inherit;
    color: #2d3748;
    /* 确保长文本可以正确换行 */
    word-wrap: break-word;
    overflow-wrap: break-word;
    /* 优化滚动 */
    overflow-y: auto;
}

#messageInput:focus {
    outline: none;
}

#messageInput::placeholder {
    color: #a0aec0;
}

.send-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 0.75rem;
    background: #4299e1;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
    /* 确保按钮不会变形 */
    min-width: 44px;
    min-height: 44px;
}

.send-btn:hover:not(:disabled) {
    background: #3182ce;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.4);
}

.send-btn:disabled {
    background: #e2e8f0;
    color: #a0aec0;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.send-icon {
    font-size: 1.1rem;
}

.input-hint {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: #a0aec0;
    text-align: center;
}

/* 加载遮罩 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e2e8f0;
    border-top: 4px solid #4299e1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

.loading-text {
    color: #2d3748;
    font-size: 1.125rem;
    font-weight: 500;
}

/* 滚动条样式 */
.chat-messages::-webkit-scrollbar,
.tool-result::-webkit-scrollbar,
.tool-result-content::-webkit-scrollbar,
#messageInput::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track,
.tool-result::-webkit-scrollbar-track,
.tool-result-content::-webkit-scrollbar-track,
#messageInput::-webkit-scrollbar-track {
    background: #f7fafc;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb,
.tool-result::-webkit-scrollbar-thumb,
.tool-result-content::-webkit-scrollbar-thumb,
#messageInput::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover,
.tool-result::-webkit-scrollbar-thumb:hover,
.tool-result-content::-webkit-scrollbar-thumb:hover,
#messageInput::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
        height: auto;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .header-actions {
        flex-wrap: wrap;
    }
    
    .chat-container {
        padding: 0 1rem;
    }
    
    .message-bubble {
        max-width: 90%;
    }
    
    .app-title {
        font-size: 1.25rem;
    }
    
    /* 移动端输入框优化 */
    #messageInput {
        max-height: 100px;
    }
    
    .chat-input-wrapper {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .send-btn {
        align-self: flex-end;
        width: auto;
        padding: 0.75rem 1.5rem;
        border-radius: 0.75rem;
    }
    
    .input-hint {
        font-size: 0.625rem;
    }
    
    /* 移动端工具结果优化 */
    .tool-result {
        max-height: 300px;
        font-size: 0.8rem;
    }
}

/* 特殊内容格式化 */
.tool-result pre {
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
}

.tool-result table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.5rem 0;
    font-size: 0.8rem;
    background: white;
}

.tool-result th,
.tool-result td {
    border: 1px solid #e2e8f0;
    padding: 0.5rem;
    text-align: left;
}

.tool-result th {
    background: #f7fafc;
    font-weight: 600;
    color: #2d3748;
} 

/* Markdown渲染样式 */
.message-bubble h1,
.message-bubble h2,
.message-bubble h3,
.message-bubble h4,
.message-bubble h5,
.message-bubble h6 {
    margin: 0.5rem 0;
    font-weight: 600;
    line-height: 1.25;
}

.message-bubble h1 { font-size: 1.5rem; color: #2d3748; }
.message-bubble h2 { font-size: 1.25rem; color: #2d3748; }
.message-bubble h3 { font-size: 1.125rem; color: #2d3748; }
.message-bubble h4 { font-size: 1rem; color: #2d3748; }
.message-bubble h5 { font-size: 0.9rem; color: #2d3748; }
.message-bubble h6 { font-size: 0.85rem; color: #2d3748; }

.message-bubble strong {
    font-weight: 600;
    color: #2d3748;
}

.message-bubble em {
    font-style: italic;
    color: #4a5568;
}

.message-bubble code {
    background: rgba(0, 0, 0, 0.05);
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875em;
    color: #e53e3e;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.message-bubble pre {
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 0.5rem 0;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

.message-bubble pre code {
    background: none;
    padding: 0;
    border: none;
    color: #2d3748;
    font-size: inherit;
}

.message-bubble ul,
.message-bubble ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.message-bubble li {
    margin: 0.25rem 0;
    line-height: 1.5;
}

.message-bubble blockquote {
    border-left: 4px solid #4299e1;
    margin: 0.5rem 0;
    padding: 0.5rem 1rem;
    background: rgba(66, 153, 225, 0.05);
    font-style: italic;
    color: #4a5568;
}

.message-bubble a {
    color: #4299e1;
    text-decoration: underline;
}

.message-bubble a:hover {
    color: #3182ce;
}

.message-bubble table {
    border-collapse: collapse;
    margin: 0.5rem 0;
    width: 100%;
    font-size: 0.875rem;
}

.message-bubble th,
.message-bubble td {
    border: 1px solid #e2e8f0;
    padding: 0.5rem;
    text-align: left;
}

.message-bubble th {
    background: #f7fafc;
    font-weight: 600;
    color: #2d3748;
}

.message-bubble hr {
    border: none;
    border-top: 2px solid #e2e8f0;
    margin: 1rem 0;
}

/* 用户消息中的markdown样式调整 */
.message.user .message-bubble h1,
.message.user .message-bubble h2,
.message.user .message-bubble h3,
.message.user .message-bubble h4,
.message.user .message-bubble h5,
.message.user .message-bubble h6 {
    color: white;
}

.message.user .message-bubble strong {
    color: white;
}

.message.user .message-bubble code {
    background: rgba(255, 255, 255, 0.2);
    color: #bee3f8;
    border-color: rgba(255, 255, 255, 0.3);
}

.message.user .message-bubble pre {
    background: rgba(0, 0, 0, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.message.user .message-bubble pre code {
    color: white;
}

.message.user .message-bubble blockquote {
    border-left-color: #bee3f8;
    background: rgba(255, 255, 255, 0.1);
    color: #bee3f8;
}

.message.user .message-bubble a {
    color: #bee3f8;
}

.message.user .message-bubble th {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.message.user .message-bubble th,
.message.user .message-bubble td {
    border-color: rgba(255, 255, 255, 0.3);
}

.message.user .message-bubble hr {
    border-top-color: rgba(255, 255, 255, 0.3);
} 

/* 思维流样式 */
.thinking-flow {
    background: linear-gradient(135deg, #f6f9fc 0%, #edf2f7 100%);
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    margin: 1rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
    flex-shrink: 0; /* 防止被Flexbox压缩 */
}

.thinking-flow-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: rgba(66, 153, 225, 0.05);
    border-bottom: 1px solid #e2e8f0;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.thinking-flow-header:hover {
    background: rgba(66, 153, 225, 0.08);
}

.thinking-flow-header.completed {
    background: rgba(72, 187, 120, 0.05);
    border-bottom-color: #c6f6d5;
}

.thinking-flow-header.error {
    background: rgba(245, 101, 101, 0.05);
    border-bottom-color: #fed7d7;
}

.thinking-flow-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: #2d3748;
}

.thinking-icon {
    font-size: 1.125rem;
    animation: thinking-pulse 2s infinite ease-in-out;
}

@keyframes thinking-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.thinking-text {
    font-size: 0.875rem;
    color: #4a5568;
}

.thinking-flow-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.375rem;
    border-radius: 0.375rem;
    color: #718096;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.thinking-flow-toggle:hover {
    background: rgba(113, 128, 150, 0.1);
    color: #2d3748;
}

.thinking-flow-content {
    padding: 1.25rem;
    max-height: 400px;
    overflow-y: auto;
    overflow-x: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    /* 自定义滚动条样式 */
    scrollbar-width: thin;
    scrollbar-color: #cbd5e0 transparent;
}

/* 当思维流完全展开时，移除高度限制和滚动条 */
.thinking-flow-content[style*="max-height: none"] {
    max-height: none !important;
    overflow-y: visible;
}

.thinking-flow-content::-webkit-scrollbar {
    width: 6px;
}

.thinking-flow-content::-webkit-scrollbar-track {
    background: transparent;
}

.thinking-flow-content::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
}

.thinking-flow-content::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

.thinking-flow.collapsed .thinking-flow-content {
    max-height: 0;
    padding: 0 1.25rem;
}

.thinking-stages {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.thinking-stage {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem;
    background: white;
    border-radius: 0.75rem;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
}

.thinking-stage.active {
    border-color: #4299e1;
    background: #ebf8ff;
    box-shadow: 0 2px 4px rgba(66, 153, 225, 0.1);
}

.thinking-stage.completed {
    border-color: #48bb78;
    background: #f0fff4;
}

.stage-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    flex-shrink: 0;
    position: relative;
}

.thinking-stage.active .stage-icon {
    background: #ebf8ff;
    border-color: #4299e1;
}

.thinking-stage.completed .stage-icon {
    background: #f0fff4;
    border-color: #48bb78;
}

.thinking-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid #4299e1;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.stage-check {
    color: #48bb78;
    font-weight: bold;
    font-size: 1rem;
}

.stage-number {
    background: #4299e1;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.stage-content {
    flex: 1;
    min-width: 0;
}

.stage-title {
    font-weight: 600;
    color: #2d3748;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.stage-detail {
    font-size: 0.75rem;
    color: #718096;
    line-height: 1.4;
}

.tools-container {
    margin-top: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.thinking-tool {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.thinking-tool.executing {
    border-color: #4299e1;
    background: #ebf8ff;
}

.thinking-tool.completed {
    border-color: #48bb78;
    background: #f0fff4;
}

.thinking-tool.error {
    border-color: #f56565;
    background: #fed7d7;
}

.tool-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    border: 1px solid #e2e8f0;
    flex-shrink: 0;
}

.thinking-tool.executing .tool-icon {
    border-color: #4299e1;
}

.thinking-tool.completed .tool-icon {
    border-color: #48bb78;
}

.thinking-tool.error .tool-icon {
    border-color: #f56565;
}

.tool-spinner {
    width: 12px;
    height: 12px;
    border: 2px solid #4299e1;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.tool-check {
    color: #48bb78;
    font-weight: bold;
    font-size: 0.75rem;
}

.tool-error {
    color: #f56565;
    font-weight: bold;
    font-size: 0.75rem;
}

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

.tool-name {
    font-weight: 500;
    color: #2d3748;
    font-size: 0.75rem;
    margin-bottom: 0.125rem;
}

.tool-progress {
    font-size: 0.75rem;
    color: #718096;
}

.tool-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    border-top: 1px solid #e2e8f0;
}

.tool-result-size {
    font-size: 0.75rem;
    color: #718096;
    background: rgba(113, 128, 150, 0.1);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.tool-result-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: none;
    border: 1px solid transparent;
    color: #4299e1;
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    font-weight: 500;
}

.tool-result-toggle:hover {
    background: #ebf8ff;
    border-color: #bee3f8;
}

.tool-result-content {
    background: white;
    padding: 0.75rem;
    border-radius: 0.375rem;
    border: 1px solid #e2e8f0;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: break-word;
    transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
    max-height: 300px;
    overflow-y: auto;
}

.tool-result-content.collapsed {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    overflow: hidden;
    border-width: 0;
}

.tool-result-content.error-text {
    color: #c53030;
    background-color: #fff5f5;
    border-color: #fed7d7;
    padding: 0.75rem;
}

/* 确保文字不被遮挡 */
.thinking-flow * {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .thinking-flow-header {
        padding: 0.75rem 1rem;
    }
    
    .thinking-flow-content {
        padding: 1rem;
        max-height: 300px; /* 移动端降低高度 */
        /* 移动端触摸滚动优化 */
        -webkit-overflow-scrolling: touch;
    }
    
    .thinking-stage {
        padding: 0.5rem;
        gap: 0.75rem;
    }
    
    .thinking-flow.collapsed .thinking-flow-content {
        padding: 0 1rem;
    }
    
    /* 移动端滚动条隐藏 */
    .thinking-flow-content::-webkit-scrollbar {
        width: 0px;
        background: transparent;
    }
}