/* ============================================
   全局样式与CSS变量
   ============================================ */
:root {
    /* 颜色系统 - 现代化渐变配色 */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* 玻璃态背景色 - 半透明（提高不透明度以增加对比度） */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-bg-light: rgba(255, 255, 255, 0.85);
    --glass-bg-dark: rgba(255, 255, 255, 0.15);
    --glass-bg-primary: rgba(99, 102, 241, 0.75);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-border-light: rgba(255, 255, 255, 0.6);
    
    /* 背景色 - 柔和的渐变背景 */
    --bg-primary: rgba(255, 255, 255, 0.1);
    --bg-secondary: rgba(248, 250, 252, 0.2);
    --bg-tertiary: rgba(241, 245, 249, 0.15);
    --bg-dark: rgba(30, 41, 59, 0.3);
    --bg-gradient: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
    
    /* 文本颜色 */
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #ffffff;
    --text-muted: rgba(148, 163, 184, 0.8);
    
    /* 边框与阴影 - 玻璃态效果 */
    --border-color: rgba(255, 255, 255, 0.3);
    --border-radius: 20px;
    --border-radius-sm: 12px;
    --border-radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.25);
    
    /* 玻璃态模糊效果 */
    --glass-blur: blur(20px);
    --glass-blur-light: blur(10px);
    --glass-blur-heavy: blur(30px);
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* 布局尺寸 */
    --header-height: 64px;
    --footer-height: 140px;
    --sidebar-width: 300px;
    
    /* 动画 - 更流畅的过渡 */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   顶部导航栏 (Header)
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex: 1;
}

.menu-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.menu-btn:hover {
    color: var(--primary-color);
    background-color: var(--bg-tertiary);
    transform: scale(1.05);
}

.menu-btn:active {
    transform: scale(0.95);
}

.app-title {
    font-size: 22px;
    font-weight: 700;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.app-title-en {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    opacity: 0.7;
    font-style: italic;
}

.app-beta-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 900;
    color: #000000 !important;
    -webkit-text-fill-color: #000000 !important;
    background: #fde047 !important;
    background-clip: border-box !important;
    -webkit-background-clip: border-box !important;
    padding: 3px 8px;
    border-radius: 4px;
    margin-left: 6px;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
    vertical-align: middle;
    line-height: 1.4;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    text-shadow: none !important;
}

.version-number {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-left: var(--spacing-md);
    margin-right: var(--spacing-md);
}

/* 处理中logo容器（中间位置） */
.processing-logo-container {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    pointer-events: none;
}

.processing-logo-container.show {
    display: flex;
}

.processing-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    animation: logoBlink 1.2s ease-in-out infinite;
}

/* 闪烁动画 */
@keyframes logoBlink {
    0%, 100% {
        opacity: 0.3;
        transform: scale(0.95);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
    margin-left: auto; /* 右移到最右侧 */
}

/* 说明书按钮 */
.manual-btn {
    position: relative;
    height: 40px;
    padding: 0 var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: #6366f1;
    font-size: 14px;
    font-weight: 500;
}

.manual-btn:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(139, 92, 246, 0.3));
    border-color: rgba(99, 102, 241, 0.5);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    color: #4f46e5;
}

.manual-icon {
    font-size: 18px;
    filter: drop-shadow(0 1px 2px rgba(99, 102, 241, 0.3));
}

.manual-text {
    font-weight: 500;
}

/* 说明书面板 */
.manual-panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 600px;
    max-height: 600px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    pointer-events: none;
}

.manual-panel.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.manual-panel.hidden {
    display: none;
}

.manual-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.5);
}

.manual-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.close-manual-btn {
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.close-manual-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.manual-content {
    max-height: 520px;
    overflow-y: auto;
    padding: var(--spacing-lg);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
}

.manual-content h1,
.manual-content h2,
.manual-content h3,
.manual-content h4 {
    margin-top: 20px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
}

.manual-content h1 {
    font-size: 24px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
    padding-bottom: 10px;
}

.manual-content h2 {
    font-size: 20px;
}

.manual-content h3 {
    font-size: 18px;
}

.manual-content h4 {
    font-size: 16px;
}

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

.manual-content ul,
.manual-content ol {
    margin-left: 20px;
    margin-bottom: 12px;
}

.manual-content li {
    margin-bottom: 6px;
}

.manual-content code {
    background: rgba(0, 0, 0, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.manual-content pre {
    background: rgba(0, 0, 0, 0.05);
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 12px;
}

.manual-content pre code {
    background: transparent;
    padding: 0;
}

.manual-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 12px;
}

.manual-content table th,
.manual-content table td {
    border: 1px solid rgba(0, 0, 0, 0.1);
    padding: 8px;
    text-align: left;
}

.manual-content table th {
    background: rgba(0, 0, 0, 0.05);
    font-weight: 600;
}

.manual-content hr {
    border: none;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    margin: 20px 0;
}

.manual-content strong {
    font-weight: 600;
}

.manual-content em {
    font-style: italic;
}

/* 更新通知按钮 */
.update-notification-btn {
    position: relative;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.update-notification-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    box-shadow: var(--shadow-sm);
}

.notification-icon {
    font-size: 20px;
}

/* 隐藏顶部栏的更新通知按钮和登录按钮（已移到左侧侧边栏） */
.update-notification-btn {
    display: none !important;
}

.login-btn.hidden {
    display: none !important;
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    background: #ef4444;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.95);
    display: none;
}

.notification-badge.show {
    display: block;
}

/* 更新通知面板（从左侧侧边栏按钮旁边生成） */
.update-notification-panel {
    position: fixed;
    left: calc(60px + var(--spacing-md)); /* 从左侧侧边栏右侧开始 */
    bottom: var(--spacing-lg); /* 距离底部一定距离，与按钮对齐 */
    width: 380px;
    max-height: 500px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    overflow: hidden;
    opacity: 0;
    transform: translateX(-10px);
    transition: all var(--transition-normal);
    pointer-events: none;
}

.update-notification-panel.show {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.update-notification-panel.hidden {
    display: none;
}

.notification-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.5);
}

.notification-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.close-notification-btn {
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.close-notification-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.update-list {
    max-height: 420px;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.update-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.update-item:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.update-item:last-child {
    margin-bottom: 0;
}

.update-date {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.update-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.update-content {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.update-list::-webkit-scrollbar {
    width: 6px;
}

.update-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 3px;
}

.update-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.update-list::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* 开发者模式按钮 */
/* 登录按钮 */
.login-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: var(--text-light);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.login-btn:active {
    transform: translateY(0);
}

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

.login-text {
    font-size: 14px;
}

/* 应用端下载按钮容器 */
.download-app-container-header {
    position: relative;
}

/* 应用端下载按钮 */
.download-app-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: var(--text-light);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.download-app-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

.download-app-btn:active {
    transform: translateY(0);
}

.download-app-icon {
    font-size: 16px;
}

.download-app-text {
    font-size: 14px;
}

/* 应用端下载提示框 */
.download-app-tooltip {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    width: 280px;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    transform: translateX(-50%) translateY(5px);
}

.download-app-tooltip:not(.hidden) {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.download-app-container-header:hover .download-app-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.download-app-tooltip.hidden {
    display: none;
}

.dev-mode-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-gradient);
    color: var(--text-light);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.dev-mode-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
}

.dev-mode-btn:active {
    transform: translateY(0);
}

.dev-mode-icon {
    font-size: 16px;
}

.dev-mode-text {
    font-size: 14px;
}

/* 顶部导航栏中的面试模式按钮容器 */
.interview-mode-container-header {
    position: relative;
}

/* 顶部导航栏中的面试模式按钮 */
.interview-mode-btn-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid rgba(168, 85, 247, 0.4);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(168, 85, 247, 0.15);
}

.interview-mode-btn-header:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(168, 85, 247, 0.6);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(168, 85, 247, 0.25);
}

.interview-mode-btn-header:active {
    transform: translateY(0);
}

.interview-mode-icon-header {
    width: 20px;
    height: 20px;
    object-fit: contain;
    display: block;
}

.interview-mode-icon-fallback-header {
    font-size: 16px;
    display: inline-block;
}

.interview-mode-text-header {
    font-size: 13px;
    color: var(--text-primary);
}

/* 面试模式提示框 */
.interview-mode-tooltip {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    width: 280px;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    transform: translateX(-50%) translateY(5px);
}

.interview-mode-tooltip:not(.hidden) {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.interview-mode-container-header:hover .interview-mode-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.interview-mode-tooltip.hidden {
    display: none;
}

.tooltip-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 12px;
    padding: 12px 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    position: relative;
}

.tooltip-content::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid rgba(255, 255, 255, 0.95);
}

.tooltip-content::after {
    content: '';
    position: absolute;
    top: -9px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-bottom: 9px solid rgba(168, 85, 247, 0.3);
    z-index: -1;
}

.tooltip-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    line-height: 1.4;
}

.tooltip-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.tooltip-text p {
    margin: 4px 0;
    line-height: 1.6;
}

.tooltip-text p:first-child {
    margin-top: 0;
}

.tooltip-text p:last-child {
    margin-bottom: 0;
}

/* 试用模式提示窗口（左侧独立窗口，5秒后自动消失） */
.trial-status-panel {
    position: fixed;
    top: calc(var(--header-height) + 160px); /* 再往下移一点 */
    left: calc(60px + var(--spacing-lg)); /* 从左侧侧边栏右侧开始 */
    width: 300px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 1000; /* 与AI反馈面板同一层级 */
    transition: all var(--transition-normal);
    overflow: hidden;
    opacity: 1;
    transform: translateY(0);
}

.trial-status-panel.hidden {
    display: none;
}

.trial-status-panel.fading {
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.trial-status-content {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    position: relative;
}

.trial-status-icon {
    font-size: 18px;
    display: inline-block;
    flex-shrink: 0;
    margin-top: 2px;
}

.trial-status-message {
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
    padding-right: 20px; /* 为关闭按钮留出空间 */
}

.trial-status-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
    padding: 0;
    line-height: 1;
}

.trial-status-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.trial-status-close:active {
    transform: scale(0.9);
}

/* 面试模式介绍弹窗（左侧，在试用模式弹窗下方） */
.interview-mode-info-panel {
    position: fixed;
    top: calc(var(--header-height) + 320px); /* 在试用模式弹窗下方 */
    left: calc(60px + var(--spacing-lg)); /* 从左侧侧边栏右侧开始 */
    width: 300px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 1000; /* 与AI反馈面板同一层级 */
    transition: all var(--transition-normal);
    overflow: hidden;
    opacity: 1;
    transform: translateY(0);
}

.interview-mode-info-panel.hidden {
    display: none;
}

.interview-mode-info-panel.fading {
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.interview-mode-info-content {
    padding: 14px;
    position: relative;
}

.interview-mode-info-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(168, 85, 247, 0.1);
}

.interview-mode-info-icon {
    font-size: 20px;
    display: inline-block;
    flex-shrink: 0;
}

.interview-mode-info-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

.interview-mode-info-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
    line-height: 1;
    padding: 0;
}

.interview-mode-info-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.interview-mode-info-close:active {
    transform: scale(0.9);
}

.interview-mode-info-body {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-primary);
}

.interview-mode-info-body p {
    margin: 6px 0;
    padding: 0;
}

.interview-mode-info-warning {
    color: var(--warning-color);
    font-weight: 600;
    margin-bottom: 8px !important;
}

/* 试用模式标识（右侧，固定显示） */
/* 状态栏容器（在底部大框内） */
.status-bar-container {
    width: 100%;
    margin: 0;
    padding: 0;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
    box-sizing: border-box;
}

.status-bar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.status-item:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-1px);
}

.trial-mode-indicator {
    position: static; /* 改为静态定位，在状态栏中 */
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(255, 237, 213, 0.5);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-primary);
    z-index: 1001;
    transition: all var(--transition-fast);
}

.trial-mode-indicator.hidden {
    display: none;
}

.trial-mode-icon {
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.trial-mode-text {
    font-size: 12px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
}

/* 意见反馈按钮（右侧，在试用模式和连接状态之间） */
.feedback-btn {
    position: static; /* 改为静态定位，在状态栏中 */
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 1001;
    transition: all var(--transition-fast);
    cursor: pointer;
    font-family: inherit;
}

.feedback-btn:hover {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.feedback-btn:active {
    transform: translateY(0);
}

.feedback-icon {
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.feedback-text {
    font-size: 12px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
}

/* 连接状态指示器（右下方） */
.connection-status-indicator {
    position: static; /* 改为静态定位，在状态栏中 */
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-primary);
    z-index: 1001;
    transition: all var(--transition-fast);
}

.connection-icon-wrapper {
    position: relative;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.connection-icon {
    font-size: 16px;
    animation: rotateSlow 3s linear infinite;
    transform-origin: center;
}

.connection-status-indicator.loading .connection-icon {
    animation: rotateFast 0.8s linear infinite;
}

.connection-status-dot {
    position: absolute;
    top: 0;
    right: 0;
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.95);
    animation: pulse 2s ease-in-out infinite;
}

.connection-status-indicator.loading .connection-status-dot {
    background: #f59e0b;
    animation: pulseFast 0.6s ease-in-out infinite;
}

.connection-status-indicator.disconnected .connection-status-dot {
    background: #ef4444;
    animation: none;
}

.connection-status-text {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
}

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

@keyframes pulseFast {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

.trial-status-text {
    font-size: 12px;
    color: #b45309;
}

/* 文档控制区域（包含文档切换和查看文档按钮） */
.doc-controls-inline {
    display: grid;
    grid-template-columns: 1fr auto; /* 左侧文档控制区域，右侧媒体按钮组 */
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    margin-left: var(--spacing-lg);
    margin-right: var(--spacing-lg);
}

/* 左侧文档控制区域 */
.doc-controls-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

/* 输入框上方的当前文档信息（一行显示） */
.current-doc-inline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.current-doc-inline .doc-icon {
    font-size: 14px;
}

.doc-title-inline {
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-color);
    white-space: nowrap;
    max-width: 100px; /* 限制宽度，约10个中文字符 */
    overflow: hidden;
    text-overflow: ellipsis;
}

.switch-doc-btn-inline {
    width: 22px;
    height: 22px;
    background: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    padding: 0;
}

.switch-doc-btn-inline:hover {
    background: var(--primary-hover);
    transform: scale(1.1);
}

.switch-doc-btn-inline:active {
    transform: scale(0.95);
}

.switch-doc-btn-inline .switch-icon {
    font-size: 12px;
    font-weight: bold;
}

/* 查看文档按钮 */
.view-doc-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0; /* 防止按钮被压缩 */
}

.view-doc-btn:hover {
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.view-doc-btn:active {
    transform: translateY(0);
}

.view-doc-icon {
    font-size: 16px;
}

.view-doc-text {
    font-size: 13px;
}

/* 查看文档弹窗 */
.view-document-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.view-document-modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.view-document-modal.hidden {
    display: none;
}

.view-document-content {
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.view-document-modal:not(.hidden) .view-document-content {
    transform: scale(1);
}

.view-document-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(99, 102, 241, 0.05);
}

.view-document-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.close-view-document-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.close-view-document-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.view-document-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 20px;
    max-height: 70vh;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.view-document-text {
    font-family: 'SF Mono', 'Monaco', 'Cascadia Code', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
}

.view-document-body::-webkit-scrollbar {
    width: 8px;
}

.view-document-body::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.view-document-body::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

.view-document-body::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ============================================
   左侧功能侧边栏 (Left Sidebar)
   ============================================ */
.left-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 60px;
    height: calc(100vh - var(--header-height));
    background: rgba(240, 248, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-right: 1px solid var(--border-color);
    z-index: 950;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding-bottom: var(--spacing-lg);
    box-shadow: none;
}

.left-sidebar-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    padding: 0 var(--spacing-sm);
}

/* 左侧侧边栏按钮包装器（用于定位提示框） */
.left-sidebar-btn-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.left-sidebar-btn {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
    color: var(--text-primary);
    font-size: 18px;
    padding: 0;
    box-shadow: var(--shadow-sm);
}

/* 左侧侧边栏按钮上的通知徽章 */
.left-sidebar-btn .notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    background: #ef4444;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.95);
    display: none;
}

.left-sidebar-btn .notification-badge.show {
    display: block;
}

.left-sidebar-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.left-sidebar-btn:active {
    transform: scale(0.95);
}

.settings-icon {
    font-size: 18px;
    line-height: 1;
}

.notification-icon {
    font-size: 18px;
    line-height: 1;
}

.dev-mode-icon-img {
    width: 26px;
    height: 26px;
    object-fit: contain;
}

.dev-mode-icon {
    font-size: 18px;
    line-height: 1;
}

/* 左侧侧边栏按钮提示框（气泡风格） */
.left-sidebar-tooltip {
    position: absolute;
    left: calc(100% + var(--spacing-md));
    top: 50%;
    transform: translateY(-50%) translateX(5px);
    z-index: 10001;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.left-sidebar-btn-wrapper:hover .left-sidebar-tooltip {
    opacity: 1;
    transform: translateY(-50%) translateX(10px);
}

.left-sidebar-tooltip .tooltip-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 6px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 500;
}

/* 左侧侧边栏提示框无箭头设计 - 明确禁用所有箭头 */
.left-sidebar-tooltip .tooltip-content::before,
.left-sidebar-tooltip .tooltip-content::after {
    display: none !important;
    content: none !important;
}

.left-sidebar-tooltip .tooltip-text {
    margin: 0;
    padding: 0;
}

/* 知识库广场详细提示框样式 */
.knowledge-base-tooltip {
    width: 280px;
    max-width: 280px;
    white-space: normal;
}

.knowledge-base-tooltip .tooltip-content {
    padding: 12px 14px;
    max-width: 280px;
}

.knowledge-base-tooltip .tooltip-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.knowledge-base-tooltip .tooltip-text {
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.knowledge-base-tooltip .tooltip-text p {
    margin: 4px 0;
    padding: 0;
}

.knowledge-base-icon-img {
    width: 26px;
    height: 26px;
    object-fit: contain;
    display: block;
}

.knowledge-base-icon {
    font-size: 18px;
    line-height: 1;
}

/* ============================================
   文档列表侧边栏 (Document Sidebar - 从左侧弹出，不遮挡左侧功能侧边栏)
   ============================================ */
.sidebar.doc-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 60px; /* 从左侧功能侧边栏右侧开始，不遮挡 */
    right: auto;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: rgba(240, 248, 255, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-right: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: 900;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar.doc-sidebar.open {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(240, 248, 255, 0.7);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-header-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
    flex-shrink: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    line-height: 1;
    transition: color var(--transition-fast);
    border-radius: var(--border-radius-sm);
}

.close-btn:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.doc-list {
    list-style: none;
    padding: var(--spacing-sm);
}

.doc-list-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    background: rgba(240, 248, 255, 0.6);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.doc-list-item:hover {
    background: rgba(230, 240, 255, 0.7);
    border-color: var(--glass-border-light);
    transform: translateX(4px);
}

.doc-list-item.active {
    background: rgba(200, 220, 255, 0.8);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-color: var(--glass-border-light);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    font-weight: 600;
}

.doc-list-item.active:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.doc-name {
    font-weight: 500;
    flex: 1;
}

/* 新建文档按钮 */
.create-doc-item {
    border-top: 2px solid var(--border-color);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
}

.create-doc-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
}

.create-doc-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.create-doc-btn:active {
    transform: translateY(0);
}

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

.create-text {
    font-size: 14px;
}

/* 侧边栏遮罩层 */
.sidebar-overlay {
    position: fixed;
    top: var(--header-height);
    left: 60px; /* 从左侧功能侧边栏右侧开始，不遮挡左侧侧边栏 */
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    z-index: 850;
}

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

/* ============================================
   主聊天区域 (Chat Area)
   ============================================ */
.chat-area {
    margin-top: var(--header-height);
    /* 底部留出足够空间给输入框，避免内容被遮挡 */
    padding: var(--spacing-xl) var(--spacing-lg);
    padding-bottom: calc(var(--spacing-xl) + 200px); /* 为输入框预留空间 */
    min-height: calc(100vh - var(--header-height));
    max-width: 800px;
    width: 100%;
    /* 居中显示，但左侧留出空间给侧边栏和灵辑思考反馈面板 */
    /* 左侧空间：60px(侧边栏) + 20px(间距) + 320px(反馈面板) + 20px(间距) = 420px */
    /* 与input-area使用相同的计算方式，确保对齐 */
    margin-left: max(420px, calc((100% - 800px) / 2 + 25px));
    margin-right: auto;
    position: relative;
    box-sizing: border-box;
    /* 确保内容区域与输入框对齐 */
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

/* AI反馈信息面板（右移到侧边栏之外） */
.ai-feedback-panel {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-sm));
    left: calc(60px + var(--spacing-lg)); /* 从左侧侧边栏右侧开始 */
    width: 320px;
    max-height: 400px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 100;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.ai-feedback-panel.collapsed {
    max-height: 50px;
}

.ai-feedback-panel.collapsed .ai-feedback-content {
    display: none;
}

.ai-feedback-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    background: rgba(99, 102, 241, 0.05);
}

.ai-feedback-title {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.ai-feedback-icon {
    font-size: 16px;
}

.ai-feedback-title-text {
    font-size: 13px;
}

/* 标准对话示例面板（右侧） */
.example-panel {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-sm));
    right: var(--spacing-lg);
    width: 320px;
    max-height: 500px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 100;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.example-panel.collapsed {
    max-height: 50px;
}

.example-panel.collapsed .example-content {
    display: none;
}

.example-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    background: rgba(99, 102, 241, 0.05);
}

.example-title {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

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

.example-title-text {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.example-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
}

/* 默认展开状态：三角形朝下 ▼ */
.example-panel:not(.collapsed) .example-toggle .toggle-icon {
    transform: rotate(0deg) !important;
}

/* 收起状态：三角形朝右 ▶ */
.example-panel.collapsed .example-toggle .toggle-icon {
    transform: rotate(-90deg) !important;
}

.example-toggle:hover {
    color: var(--primary-color);
}

.example-content {
    max-height: 450px;
    overflow-y: auto;
    padding: 8px;
}

.example-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.example-item {
    padding: 12px 40px 12px 12px;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-primary);
    position: relative;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    transition: all var(--transition-fast);
}

.example-item:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.example-item-number {
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    font-size: 11px;
    font-weight: 600;
    color: #6366f1;
    margin-right: 8px;
    vertical-align: top;
    flex-shrink: 0;
}

.example-item-text {
    display: inline-block;
    flex: 1;
    vertical-align: top;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: calc(100% - 60px);
}

.example-item-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: rgba(99, 102, 241, 0.1);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6366f1;
    font-size: 14px;
    transition: all var(--transition-fast);
    opacity: 1;
}

.example-item-copy:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: scale(1.1);
}

.example-item-copy:active {
    transform: scale(0.95);
}

.ai-feedback-time {
    font-size: 11px;
    color: var(--text-secondary);
    margin-left: 8px;
    opacity: 0.7;
}

.ai-feedback-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
}

/* 隐藏三角形图标 */
.ai-feedback-toggle .toggle-icon {
    display: none !important;
}

/* 默认展开状态：三角形朝下 ▼ */
.ai-feedback-panel:not(.collapsed) .ai-feedback-toggle .toggle-icon {
    transform: rotate(0deg) !important;
}

/* 收起状态：三角形朝右 ▶ */
.ai-feedback-panel.collapsed .ai-feedback-toggle .toggle-icon {
    transform: rotate(-90deg) !important;
}

.ai-feedback-toggle:hover {
    color: var(--primary-color);
}

.toggle-icon {
    font-size: 12px;
    transition: transform var(--transition-fast);
    display: inline-block;
    transform-origin: center;
}

.ai-feedback-content {
    max-height: 350px;
    overflow-y: auto;
    padding: 8px;
}

.ai-feedback-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ai-feedback-item {
    padding: 10px 12px;
    background: rgba(99, 102, 241, 0.05);
    border-left: 3px solid rgba(99, 102, 241, 0.3);
    border-radius: 6px;
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-primary);
    animation: fadeInUp 0.3s ease;
}

.ai-feedback-item:last-child {
    margin-bottom: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 聊天气泡 */
.chat-bubble {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.3s ease;
    max-width: 100%; /* 使用100%，让气泡可以占满chat-area的内容区域（已减去padding） */
    width: 100%; /* 确保气泡宽度与输入框一致 */
    word-wrap: break-word;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    box-sizing: border-box;
}

.chat-bubble.user {
    margin-left: auto;
    margin-right: 0;
    flex-direction: row-reverse;
    max-width: calc(100% - 52px); /* 减去头像宽度(40px)和gap(12px)，确保与输入框内容区域对齐 */
}

.chat-bubble.ai {
    margin-left: 0;
    margin-right: auto;
    flex-direction: row;
    max-width: calc(100% - 52px); /* 减去头像宽度(40px)和gap(12px)，确保与输入框内容区域对齐 */
}

/* 消息包装容器 */
.message-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    width: 100%;
}

.chat-bubble.user .message-wrapper {
    flex-direction: row-reverse;
}

.chat-bubble.ai .message-wrapper {
    flex-direction: row;
}

/* 消息头像 */
.message-avatar {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(99, 102, 241, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-bubble.user .message-avatar {
    border-color: rgba(99, 102, 241, 0.3);
}

.chat-bubble.ai .message-avatar {
    border-color: rgba(0, 0, 0, 0.1);
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.message-content {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    flex: 1;
    min-width: 0;
    max-width: 100%; /* 确保内容区域不超出气泡 */
    box-sizing: border-box;
}

.chat-bubble.user .message-content {
    background: rgba(99, 102, 241, 0.12);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: #1e293b;
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-bottom-right-radius: 4px;
    box-shadow: var(--shadow-md);
}

.chat-bubble.ai .message-content {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: #1e293b;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-bottom-left-radius: 4px;
    box-shadow: var(--shadow-md);
}

.chat-bubble.ai.welcome-message .message-wrapper {
    width: 100%;
}

.chat-bubble.ai.welcome-message .message-avatar {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
}

.chat-bubble.ai.welcome-message .message-content {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.95) 0%, rgba(139, 92, 246, 0.95) 100%) !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: var(--shadow-lg) !important;
    position: relative;
    overflow: hidden;
}

/* 确保欢迎消息的所有文本都是白色，不被错误/警告样式覆盖 */
.chat-bubble.ai.welcome-message .message-content p,
.chat-bubble.ai.welcome-message .message-content span,
.chat-bubble.ai.welcome-message .message-content div,
.chat-bubble.ai.welcome-message .message-content strong,
.chat-bubble.ai.welcome-message .message-content ul,
.chat-bubble.ai.welcome-message .message-content li,
.chat-bubble.ai.welcome-message .message-wrapper .message-content p,
.chat-bubble.ai.welcome-message .message-wrapper .message-content span,
.chat-bubble.ai.welcome-message .message-wrapper .message-content div,
.chat-bubble.ai.welcome-message .message-wrapper .message-content strong,
.chat-bubble.ai.welcome-message .message-wrapper .message-content ul,
.chat-bubble.ai.welcome-message .message-wrapper .message-content li {
    color: #ffffff !important;
}

/* 最高优先级：确保欢迎消息内容区域的所有文本都是白色（不包括图标） */
.chat-bubble.ai.welcome-message .message-content *:not(.avatar-img):not(img) {
    color: #ffffff !important;
}

.chat-bubble.ai.welcome-message .message-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.message-content p {
    margin-bottom: var(--spacing-sm);
    color: inherit;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: inherit;
}

.message-content li {
    margin-bottom: var(--spacing-xs);
    color: inherit;
}

.message-content strong {
    color: inherit;
    font-weight: 600;
}

/* 文档内容展示卡片 */
.document-content-card {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-sm);
    white-space: pre-wrap;
    font-family: 'SF Mono', 'Monaco', 'Cascadia Code', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.8;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    position: relative;
}

.document-content-card::-webkit-scrollbar {
    width: 8px;
}

.document-content-card::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.document-content-card::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

.document-content-card::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 添加平滑滚动 */
.chat-area {
    scroll-behavior: smooth;
}

.chat-area::-webkit-scrollbar {
    width: 8px;
}

.chat-area::-webkit-scrollbar-track {
    background: transparent;
}

.chat-area::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

.chat-area::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ============================================
   底部输入区域 (Input Area)
   ============================================ */
.input-area {
    position: fixed;
    bottom: 0;
    /* 左侧留出空间给侧边栏和灵辑思考反馈面板，与chat-area对齐 */
    /* 使用与chat-area完全相同的计算方式，确保完全对齐，并右移一点 */
    left: max(420px, calc((100% - 800px) / 2 + 25px));
    width: 100%;
    max-width: 800px;
    height: auto;
    min-height: auto;
    background: transparent; /* 透明背景 */
    padding: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    align-items: stretch;
}

/* 底部大框容器（框住所有内容） */
.bottom-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    position: relative;
}

/* 笔记共享按钮（左上角） */
.share-note-btn-wrapper {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-md);
    z-index: 100;
}

.share-note-btn {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    padding: 0;
}

.share-note-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.share-note-btn:active {
    transform: scale(0.95);
}

.share-note-icon-img {
    width: 26px;
    height: 26px;
    object-fit: contain;
    display: block;
}

.share-note-icon {
    font-size: 18px;
    line-height: 1;
}

/* 笔记共享提示框（在按钮上方） */
.share-note-tooltip {
    position: absolute;
    bottom: calc(100% + var(--spacing-sm));
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    width: auto;
    min-width: 100px;
    z-index: 10002;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.share-note-btn-wrapper:hover .share-note-tooltip:not(.hidden) {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.share-note-tooltip.hidden {
    display: none;
}

.share-note-tooltip .tooltip-content {
    padding: 8px 16px;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.share-note-tooltip .tooltip-text {
    margin: 0;
    padding: 0;
}

.share-note-tooltip .tooltip-text p {
    margin: 0;
    font-size: 13px;
    color: var(--text-primary);
}

/* 笔记共享提示框的箭头（向下，指向按钮） */
.share-note-tooltip .tooltip-content::before {
    content: '';
    position: absolute;
    top: 100%;
    bottom: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid rgba(255, 255, 255, 0.95);
    border-top: none;
}

.share-note-tooltip .tooltip-content::after {
    content: '';
    position: absolute;
    top: calc(100% + 1px);
    bottom: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-bottom: 9px solid var(--border-color);
    border-top: none;
    z-index: -1;
}

/* 笔记共享弹窗 */
.share-note-modal {
    position: fixed;
    bottom: calc(var(--spacing-lg) + 200px); /* 距离底部，留出空间给下方框 */
    right: var(--spacing-lg); /* 与对话格式示例面板对齐 */
    left: auto;
    width: auto;
    height: auto;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    z-index: 10000;
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal);
}

.share-note-modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.share-note-modal.hidden {
    display: none;
}

.share-note-modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 320px; /* 与对话格式示例面板宽度一致 */
    max-height: none; /* 不限制高度，让内容自然显示 */
    overflow: visible; /* 移除滚动 */
    position: relative;
}

.share-note-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.share-note-modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.close-share-note-btn {
    width: 28px;
    height: 28px;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    padding: 0;
    line-height: 1;
}

.close-share-note-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.share-note-modal-body {
    padding: var(--spacing-sm) var(--spacing-md);
}

.share-note-qr-section {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.share-note-qr-code {
    width: 150px;
    height: 150px;
    object-fit: contain;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.5);
}

.share-note-link-section {
    margin-bottom: var(--spacing-sm);
}

.share-note-link-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.share-note-link-container {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.share-note-link-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.8);
    font-family: monospace;
}

.share-note-link-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.copy-share-link-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.copy-share-link-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.copy-share-link-btn:active {
    transform: translateY(0);
}

.share-note-description {
    text-align: center;
    padding: var(--spacing-xs) 0;
    margin-top: var(--spacing-xs);
}

.share-note-description p {
    margin: 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}


/* 输入框区域（在底部大框内） */
.input-section {
    width: 100%;
    box-sizing: border-box;
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    width: 100%;
    box-sizing: border-box;
}

.user-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-family: inherit;
    resize: none;
    max-height: 100px;
    overflow-y: auto;
    transition: all var(--transition-fast);
    background: transparent;
    color: var(--text-primary);
    box-shadow: none;
}

.user-input:focus {
    outline: none;
}

.input-wrapper:focus-within {
    border-color: var(--glass-border-light);
    box-shadow: var(--shadow-lg), 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.user-input::placeholder {
    color: var(--text-muted);
}

.input-wrapper:focus-within {
    box-shadow: var(--shadow-md);
    border: 1px solid var(--primary-color);
}

.voice-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.voice-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.voice-btn:active {
    transform: scale(0.95);
}

.voice-icon {
    font-size: 20px;
    line-height: 1;
}

/* 语音按钮容器 */
.voice-btn-container {
    position: relative;
    flex-shrink: 0;
}

/* 附件上传按钮 */
.attachment-btn-container {
    position: relative;
    flex-shrink: 0;
}

.attachment-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    padding: 0;
}

.attachment-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.attachment-btn:active {
    transform: scale(0.95);
}

.attachment-icon {
    font-size: 24px;
    line-height: 1;
}

/* 附件上传提示框（在图标下方弹出） */
.attachment-btn-tooltip {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
    width: auto;
    min-width: 100px;
    z-index: 10002;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.attachment-btn-tooltip .tooltip-content {
    padding: 8px 16px;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.attachment-btn-tooltip .tooltip-text {
    margin: 0;
    padding: 0;
}

.attachment-btn-tooltip .tooltip-text p {
    margin: 0;
    font-size: 13px;
    color: var(--text-primary);
}

.attachment-btn-container:hover .attachment-btn-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.attachment-btn-tooltip.hidden {
    display: none;
}

/* 附件上传提示框的箭头（向上，指向按钮） */
.attachment-btn-tooltip .tooltip-content::before {
    content: '';
    position: absolute;
    bottom: 100%;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid rgba(255, 255, 255, 0.95);
    border-bottom: none;
}

.attachment-btn-tooltip .tooltip-content::after {
    content: '';
    position: absolute;
    bottom: calc(100% + 1px);
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-top: 9px solid rgba(168, 85, 247, 0.3);
    border-bottom: none;
    z-index: -1;
}

/* 语音输入提示框 */
.voice-btn-tooltip {
    position: fixed;
    width: 280px;
    z-index: 10001; /* 高于试用模式面板(1000)和连接状态指示器(1001) */
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    transform: translateX(-50%) translateY(5px);
    /* 位置将通过JavaScript动态计算 */
}

.voice-btn-tooltip:not(.hidden) {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.voice-btn-container:hover .voice-btn-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.voice-btn-tooltip.hidden {
    display: none;
}

/* 语音输入提示框的箭头（向上） */
.voice-btn-tooltip .tooltip-content::before {
    content: '';
    position: absolute;
    bottom: -8px;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid rgba(255, 255, 255, 0.95);
    border-bottom: none;
}

.voice-btn-tooltip .tooltip-content::after {
    content: '';
    position: absolute;
    bottom: -9px;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-top: 9px solid rgba(168, 85, 247, 0.3);
    border-bottom: none;
    z-index: -1;
}

/* 媒体输入按钮组（在doc-controls-inline中时） */
.doc-controls-inline .media-input-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-md); /* 与input-wrapper中的gap一致 */
    flex-shrink: 0;
    /* 确保按钮与下方对齐 */
    justify-content: flex-end;
}

/* 媒体按钮容器 */
.media-btn-container {
    position: relative;
    flex-shrink: 0;
}

/* 媒体输入按钮（图片、音频、视频） */
.media-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.media-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.media-btn:active {
    transform: scale(0.95);
}

.media-icon {
    font-size: 20px;
    line-height: 1;
}

/* 媒体输入提示框 */
.media-btn-tooltip {
    position: fixed;
    width: auto;
    min-width: 100px;
    z-index: 10002; /* 高于试用模式面板(1000)、连接状态指示器(1001)和语音输入提示框(10001) */
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    transform: translateX(-50%) translateY(5px);
    /* 位置将通过JavaScript动态计算 */
}

.media-btn-tooltip .tooltip-content {
    padding: 8px 16px;
    text-align: center;
}

.media-btn-tooltip .tooltip-text {
    margin: 0;
    padding: 0;
}

.media-btn-tooltip .tooltip-text p {
    margin: 0;
    font-size: 13px;
    color: var(--text-primary);
}

.media-btn-tooltip:not(.hidden) {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.media-btn-container:hover .media-btn-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.media-btn-tooltip.hidden {
    display: none;
}

/* 媒体输入提示框的箭头（向上） */
.media-btn-tooltip .tooltip-content::before {
    content: '';
    position: absolute;
    bottom: -8px;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid rgba(255, 255, 255, 0.95);
    border-bottom: none;
}

.media-btn-tooltip .tooltip-content::after {
    content: '';
    position: absolute;
    bottom: -9px;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-top: 9px solid rgba(168, 85, 247, 0.3);
    border-bottom: none;
    z-index: -1;
}

.send-btn {
    width: 48px;
    height: 48px;
    background: var(--bg-gradient);
    color: var(--text-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.send-btn:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-lg);
}

.send-btn:active {
    transform: scale(0.95) rotate(0deg);
}

.send-btn:disabled {
    background: var(--secondary-color);
    cursor: not-allowed;
    transform: none;
    opacity: 0.6;
}

.send-btn:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    transform: none;
}

.send-icon {
    font-size: 20px;
    line-height: 1;
}

.input-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.hint-icon {
    font-size: 14px;
}

kbd {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 11px;
    font-family: monospace;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.app-icon {
    font-size: 20px;
    margin-right: var(--spacing-xs);
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

.app-icon-img {
    width: 32px;
    height: 32px;
    margin-right: var(--spacing-xs);
    display: inline-block;
    vertical-align: middle;
    object-fit: contain;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.badge-icon {
    font-size: 16px;
    margin-right: var(--spacing-xs);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .current-doc-inline {
        display: none;
    }
    
    .chat-area {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .sidebar {
        left: 0;
    }
}

/* ============================================
   模态框 (Modal)
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: var(--glass-blur-heavy);
    -webkit-backdrop-filter: var(--glass-blur-heavy);
}

.modal-content {
    position: relative;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    animation: modalSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2001;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.modal-header {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
}

.modal-body {
    padding: var(--spacing-lg);
    background: transparent;
}

.modal-body p {
    font-size: 16px;
    line-height: 1.8;
    margin: 0;
    color: var(--text-primary);
    word-wrap: break-word;
    white-space: normal;
}

/* 文档匹配确认消息样式 */
#match-confirmation-message {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
}

#match-confirmation-message .match-warning-title {
    font-weight: 600;
    color: var(--warning-color);
    margin-bottom: 12px;
    font-size: 17px;
}

#match-confirmation-message .match-content {
    margin: 8px 0;
    color: var(--text-primary);
    line-height: 1.8;
}

#match-confirmation-message .match-suggestion {
    margin-top: 12px;
    color: var(--primary-color);
    font-weight: 500;
}

#match-confirmation-message .match-spacer {
    height: 12px;
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    border-top: 1px solid var(--glass-border);
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
}

.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--glass-bg-primary);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border-light);
    color: var(--text-light);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--glass-bg-light);
    border-color: var(--glass-border-light);
}

/* ============================================
   加载指示器 (Loading Indicator)
   ============================================ */
.loading-indicator {
    display: none !important;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 2px dashed rgba(99, 102, 241, 0.08);
    border-radius: var(--border-radius);
    box-shadow: none;
    margin-bottom: var(--spacing-md);
    max-width: 85%;
    margin-left: 0;
    margin-right: auto;
    animation: fadeInUp 0.3s ease;
    visibility: hidden;
    opacity: 0;
}

.loading-indicator.show {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* 破碎动画 */
.loading-indicator.breaking {
    animation: breakBubble 0.5s ease-out forwards;
    pointer-events: none;
}

@keyframes breakBubble {
    0% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
    25% {
        transform: scale(1.1) rotate(5deg);
        opacity: 0.9;
    }
    50% {
        transform: scale(0.9) rotate(-5deg);
        opacity: 0.7;
    }
    75% {
        transform: scale(0.7) rotate(10deg);
        opacity: 0.4;
    }
    100% {
        transform: scale(0) rotate(45deg);
        opacity: 0;
        visibility: hidden;
    }
}

/* 破碎粒子效果 */
.loading-indicator.breaking::before,
.loading-indicator.breaking::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    animation: particleFly 0.5s ease-out forwards;
}

.loading-indicator.breaking::before {
    top: 20%;
    left: 20%;
    animation-delay: 0.1s;
}

.loading-indicator.breaking::after {
    top: 20%;
    right: 20%;
    animation-delay: 0.2s;
}

@keyframes particleFly {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(var(--particle-x, 30px), var(--particle-y, -30px)) scale(0);
        opacity: 0;
    }
}

.loading-dots {
    display: flex;
    gap: 6px;
}

.loading-dots span {
    width: 10px;
    height: 10px;
    background: var(--bg-gradient);
    border-radius: 50%;
    animation: loadingDot 1.4s infinite ease-in-out;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes loadingDot {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.loading-text {
    font-size: 14px;
    color: rgba(99, 102, 241, 0.6);
}

/* 错误消息样式 - 淡红色（最高优先级，必须放在最后以确保覆盖其他样式） */
/* 但排除欢迎消息，确保欢迎消息不受影响 */
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content,
.chat-bubble.ai.error:not(.welcome-message) .message-content {
    background: rgba(255, 200, 200, 0.1) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    color: #dc2626 !important;
    border: 1px solid rgba(255, 150, 150, 0.2) !important;
    border-bottom-left-radius: 4px !important;
    box-shadow: var(--shadow-md) !important;
}

/* 警告消息样式 - 黄色（三次无法理解意图时使用） */
.chat-bubble.ai.warning .message-wrapper .message-content,
.chat-bubble.ai.warning .message-content {
    background: rgba(255, 237, 213, 0.15) !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    color: #b45309 !important;
    border: 1px solid rgba(255, 193, 7, 0.3) !important;
    border-bottom-left-radius: 4px !important;
    box-shadow: var(--shadow-md) !important;
}

/* 确保警告消息内的所有文本元素都是黄色/橙色 */
.chat-bubble.ai.warning .message-content p,
.chat-bubble.ai.warning .message-content span,
.chat-bubble.ai.warning .message-content div,
.chat-bubble.ai.warning .message-content strong,
.chat-bubble.ai.warning .message-content ul,
.chat-bubble.ai.warning .message-content li,
.chat-bubble.ai.warning .message-wrapper .message-content p,
.chat-bubble.ai.warning .message-wrapper .message-content span,
.chat-bubble.ai.warning .message-wrapper .message-content div,
.chat-bubble.ai.warning .message-wrapper .message-content strong,
.chat-bubble.ai.warning .message-wrapper .message-content ul,
.chat-bubble.ai.warning .message-wrapper .message-content li {
    color: #b45309 !important;
}

/* 最高优先级：确保警告消息内容区域的所有文本都是黄色/橙色（不包括图标） */
.chat-bubble.ai.warning .message-content *:not(.avatar-img):not(img) {
    color: #b45309 !important;
}

/* 再次强调警告消息的背景和边框 */
.chat-bubble.ai.warning .message-content,
.chat-bubble.ai.warning .message-wrapper .message-content {
    background: rgba(255, 237, 213, 0.15) !important;
    border-color: rgba(255, 193, 7, 0.3) !important;
    border: 1px solid rgba(255, 193, 7, 0.3) !important;
}

/* 确保错误消息内的所有文本元素都是红色 */
/* 但排除欢迎消息，确保欢迎消息不受影响 */
.chat-bubble.ai.error:not(.welcome-message) .message-content p,
.chat-bubble.ai.error:not(.welcome-message) .message-content span,
.chat-bubble.ai.error:not(.welcome-message) .message-content div,
.chat-bubble.ai.error:not(.welcome-message) .message-content strong,
.chat-bubble.ai.error:not(.welcome-message) .message-content ul,
.chat-bubble.ai.error:not(.welcome-message) .message-content li,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content p,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content span,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content div,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content strong,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content ul,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content li {
    color: #dc2626 !important;
}

/* 最高优先级：确保错误消息内容区域的所有文本都是红色（不包括图标） */
/* 但排除欢迎消息，确保欢迎消息不受影响 */
.chat-bubble.ai.error:not(.welcome-message) .message-content *:not(.avatar-img):not(img) {
    color: #dc2626 !important;
}

/* 再次强调错误消息的背景和边框 */
/* 但排除欢迎消息，确保欢迎消息不受影响 */
.chat-bubble.ai.error:not(.welcome-message) .message-content,
.chat-bubble.ai.error:not(.welcome-message) .message-wrapper .message-content {
    background: rgba(255, 200, 200, 0.1) !important;
    border-color: rgba(255, 150, 150, 0.2) !important;
    border: 1px solid rgba(255, 150, 150, 0.2) !important;
}

/* ============================================
   响应式设计 (Responsive Design)
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: 0 var(--spacing-sm);
    }
    
    .app-title {
        font-size: 18px;
    }
    
    .active-doc-info {
        font-size: 12px;
    }
    
    .sidebar {
        width: 100%;
        max-width: 320px;
    }
    
    .chat-area {
        padding: var(--spacing-md) var(--spacing-sm);
        /* 小屏幕时，左侧空间减少，但仍要避开反馈面板 */
        /* 与input-area使用相同的计算方式，确保对齐 */
        margin-left: max(360px, var(--spacing-md));
        max-width: 800px;
    }
    
    .chat-bubble {
        max-width: 95%;
    }
    
    .input-area {
        padding: var(--spacing-sm);
        /* 小屏幕时，左侧空间减少，与chat-area对齐 */
        left: max(360px, var(--spacing-md));
        max-width: 800px;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 56px;
        --footer-height: 100px;
    }
    
    .chat-bubble {
        max-width: 100%;
    }
    
    .message-content {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 14px;
    }
}

/* 意见反馈弹窗 */
.feedback-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.feedback-modal.hidden {
    display: none;
}

.feedback-modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.feedback-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.feedback-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.close-feedback-modal {
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.close-feedback-modal:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.feedback-modal-body {
    padding: 20px;
}

.feedback-rating-section {
    margin-bottom: 20px;
}

.feedback-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.star-rating {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.star {
    font-size: 32px;
    cursor: pointer;
    transition: transform 0.2s ease;
    color: #ddd;
    user-select: none;
}

.star:hover {
    transform: scale(1.2);
}

.star.active {
    color: #ffc107;
}

.rating-text {
    font-size: 12px;
    color: var(--text-secondary);
    display: block;
}

.feedback-text-section {
    margin-top: 20px;
}

.feedback-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    min-height: 100px;
    box-sizing: border-box;
}

.feedback-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.feedback-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.feedback-submit-btn,
.feedback-cancel-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.feedback-submit-btn {
    background: var(--primary-color);
    color: white;
}

.feedback-submit-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.feedback-submit-btn:active {
    transform: translateY(0);
}

.feedback-cancel-btn {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.feedback-cancel-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

/* 意见反馈提交成功提示窗口（左侧，在试用模式提示窗口下面） */
.feedback-success-panel {
    position: fixed;
    top: calc(var(--header-height) + 240px); /* 在试用模式提示窗口下面 */
    left: var(--spacing-lg);
    width: 300px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(76, 175, 80, 0.3);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
    overflow: hidden;
    opacity: 1;
    transform: translateY(0);
}

.feedback-success-panel.hidden {
    display: none;
}

.feedback-success-panel.fading {
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.feedback-success-content {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    position: relative;
}

.feedback-success-icon {
    font-size: 18px;
    display: inline-block;
    flex-shrink: 0;
    margin-top: 2px;
}

.feedback-success-message {
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
    padding-right: 20px;
}

.feedback-success-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
    padding: 0;
    line-height: 1;
}

.feedback-success-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.feedback-success-close:active {
    transform: scale(0.9);
}

/* ============================================
   底部工具栏 (Bottom Toolbar)
   ============================================ */
.bottom-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
    gap: var(--spacing-sm);
    box-sizing: border-box;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.toolbar-center {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    justify-content: center;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    justify-content: flex-end;
}

/* 模式选择器按钮 */
.mode-selector-container,
.model-selector-container {
    position: relative;
    display: inline-block;
}

.mode-selector-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    font-size: 14px;
    color: var(--text-primary);
    white-space: nowrap;
}

.mode-selector-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.mode-selector-btn:active {
    transform: translateY(0);
}

.mode-icon {
    font-size: 16px;
    line-height: 1;
}

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

.mode-arrow {
    font-size: 10px;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.mode-selector-btn:hover .mode-arrow {
    transform: translateY(2px);
}

/* 模式选择器容器（相对定位，用于下拉菜单定位） */
.mode-selector-container {
    position: relative;
}

/* 模式下拉菜单 */
.mode-dropdown {
    position: absolute;
    bottom: calc(100% + var(--spacing-sm));
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 10003;
    min-width: 150px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.mode-dropdown.hidden {
    display: none;
}

.mode-dropdown:not(.hidden) {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mode-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative; /* 为tooltip提供定位上下文 */
}

.mode-dropdown-item:hover {
    background: rgba(99, 102, 241, 0.1);
}

.mode-item-icon {
    font-size: 16px;
    line-height: 1;
}

.mode-item-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* 面试模式提示框（底部工具栏） */
.interview-mode-tooltip-bottom {
    position: absolute;
    right: calc(100% + var(--spacing-md));
    top: 50%;
    transform: translateY(-50%);
    width: 280px;
    z-index: 10004;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.interview-mode-tooltip-bottom:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.mode-dropdown-item:hover .interview-mode-tooltip-bottom {
    opacity: 1;
    visibility: visible;
}

.interview-mode-tooltip-bottom .tooltip-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.interview-mode-tooltip-bottom .tooltip-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-primary);
}

.interview-mode-tooltip-bottom .tooltip-text {
    margin: 0;
    padding: 0;
}

.interview-mode-tooltip-bottom .tooltip-text p {
    margin: var(--spacing-xs) 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 模型选型提示框 */
.model-selector-tooltip {
    position: absolute;
    bottom: calc(100% + var(--spacing-sm));
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    width: auto;
    min-width: 100px;
    z-index: 10002;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.model-selector-tooltip:not(.hidden) {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.model-selector-tooltip.hidden {
    display: none !important;
}

.model-selector-tooltip .tooltip-content {
    padding: 8px 16px;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.model-selector-tooltip .tooltip-text {
    margin: 0;
    padding: 0;
}

.model-selector-tooltip .tooltip-text p {
    margin: 0;
    font-size: 13px;
    color: var(--text-primary);
}

/* 模型选型提示框的箭头（向下，指向按钮） */
.model-selector-tooltip .tooltip-content::before {
    content: '';
    position: absolute;
    top: 100%;
    bottom: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid rgba(255, 255, 255, 0.95);
    border-top: none;
}

.model-selector-tooltip .tooltip-content::after {
    content: '';
    position: absolute;
    top: calc(100% + 1px);
    bottom: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-bottom: 9px solid var(--border-color);
    border-top: none;
    z-index: -1;
}

/* 工具栏按钮（切换文档、查看文档） */
.toolbar-btn {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.toolbar-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.toolbar-btn:active {
    transform: scale(0.95);
}

.toolbar-icon {
    font-size: 18px;
    line-height: 1;
}

/* 带文字的工具栏按钮 */
.toolbar-btn-with-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    font-size: 14px;
    color: var(--text-primary);
}

.toolbar-btn-with-text:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
}

.toolbar-btn-with-text:active {
    transform: translateY(0);
}

.toolbar-btn-with-text .toolbar-icon {
    font-size: 16px;
    line-height: 1;
}

.toolbar-btn-with-text .toolbar-text {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}