/* AI 书籍助手 - 主样式表 */

* { margin: 0; padding: 0; box-sizing: border-box; }

/* ===================================
   书籍选择器
=================================== */
.book-selector-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    cursor: pointer;
    font-size: 13px;
    color: #e0e0e0;
    transition: background 0.2s;
}

.section-title:hover {
    background: rgba(255, 255, 255, 0.05);
}

.section-toggle {
    font-size: 12px;
    transition: transform 0.2s;
}

.book-selector-content {
    padding: 0 12px 12px;
}

.current-book {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    margin-bottom: 8px;
}

.current-book .book-name {
    font-size: 14px;
    color: #fff;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.current-book .book-status {
    font-size: 12px;
    color: #888;
}

.book-actions {
    display: flex;
    gap: 8px;
}

.book-btn {
    flex: 1;
    padding: 6px 12px;
    background: rgba(76, 175, 80, 0.2);
    border: 1px solid rgba(76, 175, 80, 0.3);
    border-radius: 6px;
    color: #4caf50;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.book-btn:hover {
    background: rgba(76, 175, 80, 0.3);
}

/* 书籍列表弹窗 */
.book-list {
    max-height: 300px;
    overflow-y: auto;
}

.book-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: background 0.2s;
}

.book-list-item:hover {
    background: #f5f5f5;
}

.book-list-item.selected {
    background: #e3f2fd;
}

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

.book-title {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 4px;
}

.book-meta {
    font-size: 12px;
    color: #888;
    display: flex;
    gap: 8px;
}

.book-format {
    background: #e3f2fd;
    color: #1976d2;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 11px;
}

.book-index-status {
    text-align: right;
}

.index-ready {
    color: #4caf50;
    font-size: 12px;
}

.index-btn {
    padding: 6px 12px;
    background: #ff9800;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.index-btn:hover {
    background: #f57c00;
}

/* 索引进度弹窗 */
.index-progress {
    padding: 20px;
    text-align: center;
}

.progress-text {
    margin-bottom: 16px;
    color: #333;
    font-size: 14px;
}

.progress-bar-container {
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #2196f3;
    transition: width 0.3s ease;
}
html, body { height: 100%; overflow: hidden; }

/* 深色主题 */
:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #2d2d2d;
    --bg-hover: #363636;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-green: #4caf50;
    --accent-blue: #2196f3;
    --border-color: #333;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* 左侧边栏 */
.sidebar {
    width: 300px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-tab {
    flex: 1;
    padding: 15px;
    text-align: center;
    cursor: pointer;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.sidebar-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent-green);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.add-assistant {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.2s;
}

.add-assistant:hover {
    background: var(--bg-hover);
}

.assistant-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 4px;
}

.assistant-item:hover {
    background: var(--bg-hover);
}

.assistant-item.active {
    background: var(--bg-tertiary);
}

.assistant-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.assistant-name {
    flex: 1;
    font-size: 14px;
}

.assistant-menu {
    opacity: 0;
    transition: opacity 0.2s;
}

.assistant-item:hover .assistant-menu {
    opacity: 1;
}

/* 主内容区 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

/* 顶部栏 */
.chat-header {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 15px;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-title-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.chat-title-text {
    font-size: 14px;
    font-weight: 500;
}

.model-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
}

.model-selector:hover {
    background: var(--bg-hover);
}

.header-spacer {
    flex: 1;
}

.header-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
}

.header-icon:hover {
    background: var(--bg-hover);
}

/* 聊天区域 */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px 60px;
}

.message {
    margin-bottom: 24px;
    max-width: 900px;
}

.message-system {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 16px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

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

.message-user .message-content {
    background: var(--accent-blue);
    color: white;
    border-radius: 16px 16px 4px 16px;
    padding: 12px 16px;
    max-width: 70%;
}

.message-assistant {
    display: flex;
    gap: 12px;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 16px;
}

.message-assistant .message-content {
    flex: 1;
    line-height: 1.7;
    font-size: 14px;
}

.message-assistant .message-content p {
    margin-bottom: 12px;
}

.message-assistant .message-content pre {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 12px;
    overflow-x: auto;
    margin: 12px 0;
}

.message-assistant .message-content code {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 13px;
}

.message-assistant .message-content ul,
.message-assistant .message-content ol {
    padding-left: 24px;
    margin: 12px 0;
}

.message-assistant .message-content li {
    margin-bottom: 8px;
}

.message-assistant .message-content h1,
.message-assistant .message-content h2,
.message-assistant .message-content h3 {
    margin: 16px 0 12px;
}

.message-assistant .message-content blockquote {
    border-left: 3px solid var(--accent-green);
    padding-left: 16px;
    margin: 12px 0;
    color: var(--text-secondary);
}

.message-assistant .message-content a {
    color: var(--accent-blue);
    text-decoration: none;
}

.message-assistant .message-content a:hover {
    text-decoration: underline;
}

/* code 标签中的 URL 也显示为蓝色 */
.message-assistant .message-content code {
    color: var(--accent-blue);
    background: rgba(33, 150, 243, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* 代码块不变色 */
.message-assistant .message-content pre code {
    color: var(--text-primary);
    background: transparent;
    padding: 0;
}

/* 加载动画 */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px 0;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

/* 输入区域 */
.chat-input-container {
    padding: 16px 60px 24px;
    border-top: 1px solid var(--border-color);
}

.chat-input-wrapper {
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.chat-input {
    width: 100%;
    background: transparent;
    border: none;
    padding: 16px;
    color: var(--text-primary);
    font-size: 14px;
    resize: none;
    outline: none;
    min-height: 56px;
    max-height: 200px;
}

.chat-input::placeholder {
    color: var(--text-secondary);
}

.chat-input-toolbar {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    gap: 8px;
}

.toolbar-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.toolbar-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.toolbar-icon.active {
    color: var(--accent-green);
}

.toolbar-divider {
    width: 1px;
    height: 20px;
    background: var(--border-color);
    margin: 0 4px;
}

.toolbar-spacer {
    flex: 1;
}

.send-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-green);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.send-btn:hover {
    background: #43a047;
    transform: scale(1.05);
}

.send-btn:disabled {
    background: var(--bg-tertiary);
    cursor: not-allowed;
}

/* 来源卡片 */
.sources-container {
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.sources-title {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.source-item {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.source-score {
    color: var(--accent-green);
    font-weight: 500;
}

/* Thinking 思考过程样式 */
.thinking-container {
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.1), rgba(103, 58, 183, 0.1));
    border: 1px solid rgba(156, 39, 176, 0.3);
    border-radius: 8px;
    margin-bottom: 16px;
    overflow: hidden;
}

.thinking-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
    background: rgba(156, 39, 176, 0.15);
    transition: background 0.2s;
}

.thinking-header:hover {
    background: rgba(156, 39, 176, 0.25);
}

.thinking-icon {
    font-size: 16px;
}

.thinking-toggle {
    margin-left: auto;
    font-size: 10px;
    color: var(--text-secondary);
    transition: transform 0.3s;
}

.thinking-content {
    padding: 12px 14px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
    transition: max-height 0.3s, padding 0.3s, opacity 0.3s;
}

/* 折叠状态 */
.thinking-container.collapsed .thinking-content {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
}

.thinking-container.collapsed .thinking-toggle {
    transform: rotate(-90deg);
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}

/* Layui 覆盖 - 暗黑模式 */
.layui-btn {
    background: var(--accent-green);
}

/* Layer 弹窗暗黑模式 */
.layui-layer {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5) !important;
}

.layui-layer-title {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border-bottom: 1px solid var(--border-color) !important;
}

.layui-layer-content {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.layui-layer-btn {
    background: var(--bg-tertiary) !important;
    border-top: 1px solid var(--border-color) !important;
}

.layui-layer-btn a {
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
}

.layui-layer-btn a:hover {
    background: var(--accent-green) !important;
    color: white !important;
}

.layui-layer-btn .layui-layer-btn0 {
    background: var(--accent-green) !important;
    color: white !important;
    border-color: var(--accent-green) !important;
}

.layui-layer-setwin .layui-layer-close1,
.layui-layer-setwin .layui-layer-close2 {
    filter: invert(1);
}

/* Layer msg 提示暗黑模式 */
.layui-layer-msg {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4) !important;
}

.layui-layer-hui {
    background: var(--bg-secondary) !important;
}

/* Layer 确认框暗黑模式 */
.layui-layer-dialog .layui-layer-content {
    color: var(--text-primary) !important;
}

.layui-layer-ico {
    filter: brightness(1.2);
}

/* Layer padding 调整 */
.layui-layer-padding {
    padding: 20px !important;
}

/* ===================================
   移动端响应式设计
   =================================== */

/* 侧边栏切换按钮（仅移动端显示） */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1000;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* 侧边栏遮罩层 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

/* 平板 (768px - 900px) */
@media screen and (max-width: 900px) {
    .sidebar {
        width: 260px;
    }
    
    .chat-messages {
        padding: 20px 40px;
    }
    
    .chat-input-container {
        padding: 16px 40px 20px;
    }
    
    .toolbar-icon:nth-child(n+8):not(.send-btn):not(:last-child) {
        display: none;
    }
}

/* 手机 (小于 768px) */
@media screen and (max-width: 768px) {
    /* 显示汉堡菜单按钮 */
    .sidebar-toggle {
        display: flex;
    }
    
    /* 侧边栏变为滑出式 */
    .sidebar {
        position: fixed;
        top: 0;
        left: -300px;
        width: 280px;
        height: 100vh;
        z-index: 999;
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(300px);
    }
    
    .sidebar-overlay.show {
        display: block;
    }
    
    /* 主内容区占满屏幕 */
    .main-content {
        width: 100%;
    }
    
    /* 顶部栏调整 */
    .chat-header {
        padding: 12px 16px 12px 60px;
        gap: 10px;
    }
    
    .chat-title-text {
        display: none;
    }
    
    .model-selector span:nth-child(2) {
        display: none;
    }
    
    .model-selector {
        padding: 6px 10px;
    }
    
    /* 聊天区域 */
    .chat-messages {
        padding: 16px;
    }
    
    .message {
        max-width: 100%;
    }
    
    .message-user .message-content {
        max-width: 85%;
    }
    
    .message-system {
        padding: 12px 16px;
        font-size: 13px;
    }
    
    .message-assistant .message-content {
        font-size: 14px;
    }
    
    /* 输入区域 */
    .chat-input-container {
        padding: 12px 16px 16px;
    }
    
    .chat-input {
        padding: 12px;
        font-size: 16px; /* 防止 iOS 缩放 */
        min-height: 48px;
    }
    
    .chat-input-toolbar {
        padding: 6px 8px;
        gap: 4px;
        flex-wrap: wrap;
    }
    
    /* 隐藏部分工具栏图标，但保留ASR按钮 */
    .toolbar-icon:not(:nth-child(-n+6)):not(.send-btn):not(:last-child):not(.toolbar-spacer):not(#asrBtn) {
        display: none;
    }
    
    .toolbar-divider {
        display: none;
    }
    
    .toolbar-icon {
        width: 36px;
        height: 36px;
    }
    
    .send-btn {
        width: 40px;
        height: 40px;
    }
    
    /* Layer 弹窗移动端适配 */
    .layui-layer {
        width: 90% !important;
        left: 5% !important;
        margin-left: 0 !important;
    }
}

/* 超小屏手机 (小于 480px) */
@media screen and (max-width: 480px) {
    .sidebar {
        width: 100%;
        left: -100%;
    }
    
    .sidebar.open {
        transform: translateX(100%);
    }
    
    .chat-header {
        padding: 10px 12px 10px 52px;
    }
    
    .chat-title-avatar {
        width: 24px;
        height: 24px;
        font-size: 12px;
    }
    
    .header-icon {
        width: 28px;
        height: 28px;
    }
    
    .chat-messages {
        padding: 12px;
    }
    
    .message-avatar {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }
    
    .chat-input-container {
        padding: 10px 12px 12px;
    }
    
    .chat-input {
        padding: 10px;
    }
    
    .chat-input-toolbar {
        padding: 4px 6px;
    }
    
    /* 只显示最基本的工具，但保留ASR按钮 */
    .toolbar-icon:not(:nth-child(-n+3)):not(.send-btn):not(:last-child):not(.toolbar-spacer):not(#asrBtn) {
        display: none;
    }
}

/* 确保ASR按钮在所有尺寸下都显示 */
#asrBtn {
    display: flex !important;
}

/* 横屏模式优化 */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .chat-messages {
        padding: 10px 20px;
    }
    
    .chat-input-container {
        padding: 8px 20px 10px;
    }
    
    .chat-input {
        min-height: 40px;
        max-height: 100px;
    }
    
    .message-system {
        padding: 10px 14px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .toolbar-icon {
        min-width: 44px;
        min-height: 44px;
    }
    
    .send-btn {
        min-width: 44px;
        min-height: 44px;
    }
    
    .assistant-item {
        padding: 14px 12px;
    }
    
    .sidebar-tab {
        padding: 18px 15px;
    }
}

/* 安全区域适配 (iPhone X 等) */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .chat-input-container {
        padding-bottom: calc(16px + env(safe-area-inset-bottom));
    }
    
    @media screen and (max-width: 768px) {
        .chat-input-container {
            padding-bottom: calc(12px + env(safe-area-inset-bottom));
        }
    }
}

/* ===== 搜索引擎选择菜单 ===== */
.search-menu {
    padding: 12px;
}

.search-menu-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    cursor: pointer;
    transition: all 0.15s;
    border-radius: 10px;
    margin-bottom: 6px;
    border: 2px solid transparent;
}

.search-menu-item:last-of-type {
    margin-bottom: 0;
}

.search-menu-item:hover {
    background: var(--bg-hover);
}

.search-menu-item.selected {
    background: rgba(76, 175, 80, 0.12);
    border: 2px solid var(--accent-green);
}

.search-menu-item.selected .search-menu-icon {
    color: var(--accent-green);
    background: rgba(76, 175, 80, 0.2);
}

.search-menu-item.selected .search-menu-name {
    color: var(--accent-green);
    font-weight: 600;
}

.search-menu-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.search-menu-name {
    flex: 1;
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 500;
}

.search-menu-badge {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.search-menu-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-top: 1px solid var(--border-color);
    margin-top: 12px;
}

.search-menu-current {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-menu-shortcuts {
    display: flex;
    gap: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}

.search-menu-shortcuts span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.search-menu-shortcuts kbd {
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-family: inherit;
}

/* ===== Token 使用统计 ===== */
.usage-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
    padding: 12px 14px;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.08), rgba(76, 175, 80, 0.08));
    border: 1px solid rgba(33, 150, 243, 0.2);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.usage-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.usage-item:first-child {
    font-weight: 500;
    color: var(--text-primary);
}

.usage-item:last-child {
    color: var(--accent-green);
    font-weight: 500;
}

/* ===== 消息操作按钮 ===== */
.message-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.action-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.action-btn.speaking {
    background: var(--accent-green);
    color: white;
    border-color: var(--accent-green);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.action-btn svg {
    width: 16px;
    height: 16px;
}

/* ===== ASR 语音输入按钮 ===== */
.toolbar-icon.recording {
    color: #f44336;
    animation: recording-pulse 1s infinite;
}

.toolbar-icon.recording svg {
    fill: #f44336;
}

@keyframes recording-pulse {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* ASR 按钮特殊样式 */
#asrBtn {
    position: relative;
}

#asrBtn::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: #f44336;
    border-radius: 50%;
    top: 4px;
    right: 4px;
    opacity: 0;
    transition: opacity 0.2s;
}

#asrBtn.recording::after {
    opacity: 1;
    animation: recording-dot 1s infinite;
}

@keyframes recording-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ===== 对话模式按钮 ===== */
#conversationBtn {
    position: relative;
}

#conversationBtn.conversation-active {
    background: linear-gradient(135deg, #4caf50, #2196f3);
    color: white;
    animation: conversation-glow 2s infinite;
}

@keyframes conversation-glow {
    0%, 100% { 
        box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
    }
    50% { 
        box-shadow: 0 0 15px rgba(76, 175, 80, 0.8), 0 0 25px rgba(33, 150, 243, 0.5);
    }
}

#conversationBtn.listening {
    background: var(--accent-green);
    color: white;
}

#conversationBtn.thinking {
    background: #ff9800;
    color: white;
}

#conversationBtn.thinking svg {
    animation: spin 1s linear infinite;
}

#conversationBtn.speaking {
    background: var(--accent-blue);
    color: white;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 确保对话模式按钮在所有尺寸下显示 */
#conversationBtn {
    display: flex !important;
}

/* ===== 空状态引导 ===== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 40px 60px;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.6;
}

.empty-state-title {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.empty-state-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
    max-width: 400px;
}

.empty-state-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent-green);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.2s;
}

.empty-state-btn:hover {
    background: #43a047;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.empty-state-btn svg {
    width: 18px;
    height: 18px;
}