/* ==================== 基础样式和变量 ==================== */
:root {
    /* 主色调 - 专业蓝色系 */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;

    /* 辅助色 */
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    /* 中性色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
}

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==================== 开场动画 ==================== */
.intro-animation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: introFadeOut 0.5s ease 2.5s forwards;
}

@keyframes introFadeOut {
    to {
        opacity: 0;
        pointer-events: none;
    }
}

.intro-content {
    text-align: center;
    color: white;
}

.intro-logo {
    margin-bottom: var(--spacing-xl);
    animation: logoBounce 1s ease;
}

@keyframes logoBounce {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.1) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.intro-circle {
    stroke-dasharray: 226;
    stroke-dashoffset: 226;
    animation: circleDraw 1.5s ease 0.5s forwards;
}

@keyframes circleDraw {
    to {
        stroke-dashoffset: 0;
    }
}

/* 机器人动画 */
.robot-head {
    animation: robotFloat 1s ease 0.5s forwards;
    opacity: 0;
    transform-origin: center;
}

@keyframes robotFloat {
    0% {
        opacity: 0;
        transform: translateY(-30px) scale(0.3) rotate(-10deg);
    }
    60% {
        transform: translateY(5px) scale(1.05) rotate(3deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1) rotate(0deg);
    }
}

.robot-head-main {
    animation: robotGlow 2s ease 1s infinite;
}

@keyframes robotGlow {
    0%, 100% {
        filter: drop-shadow(0 0 5px rgba(96, 165, 250, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 15px rgba(96, 165, 250, 0.6));
    }
}

.robot-antenna {
    animation: antennaBlink 1.5s ease 1.2s infinite;
}

@keyframes antennaBlink {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

.robot-eye-left {
    animation: eyeBlink 3s ease 1.5s infinite;
    transform-origin: center;
}

.robot-eye-right {
    animation: eyeBlink 3s ease 1.5s infinite;
    transform-origin: center;
}

@keyframes eyeBlink {
    0%, 45%, 55%, 100% {
        transform: scaleY(1);
    }
    50% {
        transform: scaleY(0.1);
    }
}

.intro-circle-dot {
    animation: dotPulse 1s ease 1.2s infinite;
}

@keyframes dotPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.7;
    }
}

.intro-smile {
    stroke-dasharray: 50;
    stroke-dashoffset: 50;
    animation: smileDraw 0.8s ease 1.4s forwards;
}

@keyframes smileDraw {
    to {
        stroke-dashoffset: 0;
    }
}

.intro-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease infinite, titleFadeIn 1s ease 0.3s both;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 200% center;
    }
}

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

.intro-year {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.year-digit {
    font-size: 4rem;
    font-weight: 900;
    color: transparent;
    background: linear-gradient(180deg, #60a5fa 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    opacity: 0;
    transform: translateY(-50px) rotateX(90deg);
    animation: digitReveal 0.8s ease forwards;
}

.year-digit:nth-child(1) {
    animation-delay: 0.6s;
    text-shadow: 0 0 30px rgba(96, 165, 250, 0.5);
}

.year-digit:nth-child(2) {
    animation-delay: 0.8s;
    text-shadow: 0 0 30px rgba(167, 139, 250, 0.5);
}

.year-digit:nth-child(3) {
    animation-delay: 1s;
    text-shadow: 0 0 30px rgba(244, 114, 182, 0.5);
}

.year-digit:nth-child(4) {
    animation-delay: 1.2s;
    text-shadow: 0 0 30px rgba(96, 165, 250, 0.5);
}

@keyframes digitReveal {
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0deg);
    }
}

.intro-subtitle {
    font-size: var(--font-size-xl);
    color: #94a3b8;
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    animation: subtitleFadeIn 1s ease 1.4s both;
}

@keyframes subtitleFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.intro-loading {
    margin-top: var(--spacing-2xl);
    opacity: 0;
    animation: loadingFadeIn 0.5s ease 1.6s both;
}

@keyframes loadingFadeIn {
    to {
        opacity: 1;
    }
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin: 0 auto var(--spacing-md);
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
    border-radius: var(--radius-sm);
    animation: loadingProgress 2s ease 1.6s forwards;
}

@keyframes loadingProgress {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.loading-text {
    font-size: var(--font-size-sm);
    color: #64748b;
}

/* 移动端开场动画适配 */
@media (max-width: 768px) {
    .intro-title {
        font-size: 1.8rem;
    }

    .year-digit {
        font-size: 2.5rem;
    }

    .intro-subtitle {
        font-size: var(--font-size-lg);
    }

    .loading-bar {
        width: 150px;
    }
}

/* ==================== 顶部导航栏 ==================== */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.nav-tabs {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

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

.nav-tab.active {
    background: var(--primary-color);
    color: white;
}

.nav-tab svg {
    flex-shrink: 0;
}

/* ==================== 主内容区 ==================== */
.main-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: calc(100vh - 140px);
}

/* 面板默认隐藏 */
.main-content .panel {
    display: none;
}

/* 激活的面板显示 */
.main-content .panel.active {
    display: block;
}

/* ==================== 对话面板 ==================== */
.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-left: 324px;
}

.chat-settings-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.style-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
}

.product-select {
    min-width: 150px;
    max-width: 250px;
}

.response-length {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.response-length > label {
    font-weight: 500;
}

.length-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.length-label {
    min-width: 36px;
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
    font-size: var(--font-size-xs);
}

.response-length input[type="range"] {
    width: 120px;
    accent-color: var(--primary-color);
}

.length-marks {
    display: flex;
    justify-content: space-between;
    gap: 4px;
    padding: 0 2px;
}

.length-mark {
    font-size: 10px;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    transition: all 0.2s;
    user-select: none;
}

.length-mark:hover {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.length-mark.active {
    color: var(--primary-color);
    font-weight: 600;
    background: var(--primary-light);
}

/* ==================== 消息容器 ==================== */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.welcome-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
}

.welcome-message h2 {
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--text-primary);
}

.welcome-message p {
    margin-bottom: var(--spacing-xl);
}

.quick-tips {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.tip {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

/* ==================== 消息样式 ==================== */
.message {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: messageIn 0.3s ease;
}

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

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.message.ai .message-avatar {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
}

.message.user .message-avatar {
    background: var(--secondary-color);
    color: white;
}

.message-content {
    flex: 1;
    max-width: 70%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.message-bubble {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    word-wrap: break-word;
    position: relative;
}

.message.ai .message-bubble {
    background: var(--bg-secondary);
    border-top-left-radius: var(--radius-sm);
}

.message.user .message-bubble {
    background: var(--primary-color);
    color: white;
    border-top-right-radius: var(--radius-sm);
}

/* 复制按钮 */
.copy-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
}

.message-bubble:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    background: white;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.copy-btn.copied {
    background: #d1fae5;
    border-color: var(--success-color);
    color: var(--success-color);
}

.message-bubble p {
    margin-bottom: var(--spacing-sm);
}

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

.message-bubble ul,
.message-bubble ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.message-bubble li {
    margin-bottom: var(--spacing-xs);
}

.message-time {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

/* ==================== 建议卡片样式 ==================== */
.suggestion-card {
    background: #fef3c7;
    border-left: 2px solid #fbbf24;
    border-radius: 2px;
    padding: 4px 8px;
    margin-top: 4px;
    font-size: var(--font-size-xs);
    animation: suggestionSlideIn 0.3s ease;
}

@keyframes suggestionSlideIn {
    from {
        opacity: 0;
        transform: translateY(-3px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.suggestion-header {
    display: flex;
    align-items: center;
    gap: 3px;
    color: #92400e;
    font-weight: 500;
    font-size: 9px;
    margin-bottom: 2px;
    text-transform: none;
    letter-spacing: 0;
}

.suggestion-header svg {
    flex-shrink: 0;
    width: 10px;
    height: 10px;
}

.suggestion-content {
    color: #78716c;
    line-height: 1.4;
    font-size: 10px;
}

.suggestion-content p {
    margin-bottom: 0;
}

/* ==================== 输入区域 ==================== */
.input-container {
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
}

#user-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-md);
    resize: none;
    outline: none;
    transition: border-color 0.2s;
}

#user-input:focus {
    border-color: var(--primary-color);
}

.input-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* 快捷回复按钮 - 内联版本 */
.quick-replies-inline {
    display: flex;
    gap: var(--spacing-xs);
    flex: 1;
    align-items: center;
}

.quick-replies-inline .quick-reply-btn {
    padding: 6px 10px;
    border: 1px solid var(--btn-color, #2563eb);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--btn-color, #2563eb);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.quick-replies-inline .quick-reply-btn:hover {
    background: var(--btn-color, #2563eb);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.quick-replies-inline .quick-reply-btn svg {
    flex-shrink: 0;
}

.quick-replies-inline .quick-reply-btn span {
    font-size: 11px;
}

.input-hint {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ==================== 底部品牌信息 ==================== */
.brand-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
    min-height: 70px;
}

.brand-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-md);
    color: var(--text-secondary);
}

.brand-info svg {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
}

.brand-info span {
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.ai-quote {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
    text-align: right;
    max-width: 60%;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
    line-height: 1.6;
}

.ai-quote:hover {
    color: var(--primary-color);
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.ai-quote::before {
    content: '"';
    font-size: 16px;
    margin-right: 4px;
}

.ai-quote::after {
    content: '"';
    font-size: 16px;
    margin-left: 4px;
}

/* 金句切换动画 */
.ai-quote.changing {
    animation: quoteFade 0.5s ease;
}

@keyframes quoteFade {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    50% {
        opacity: 0;
        transform: translateY(-5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 按钮样式 ==================== */
.btn-primary,
.btn-secondary,
.btn-danger {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
}

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

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

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

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}

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

/* ==================== 历史记录侧边栏 ==================== */
.history-sidebar {
    position: fixed;
    right: var(--spacing-lg);
    top: 76px;
    bottom: var(--spacing-md);
    width: 300px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.history-sidebar.left {
    right: auto;
    left: var(--spacing-lg);
}

.history-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.history-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.history-header h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
}

/* 标签过滤器 */
.tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.tag-filter-btn {
    padding: 2px 8px;
    font-size: 11px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.tag-filter-btn:hover {
    background: var(--bg-tertiary);
}

.tag-filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 对话标签 - 支持自定义颜色 */
.history-item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-top: 4px;
}

.chat-tag {
    display: inline-block;
    padding: 2px 6px;
    font-size: 10px;
    border-radius: 4px;
    white-space: nowrap;
    font-weight: 500;
}

.history-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.history-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: var(--spacing-xs);
    position: relative;
}

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

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

.history-item.active {
    background: var(--primary-light);
}

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

.history-item-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 对话标签 */
.history-item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-top: 4px;
}

.chat-tag {
    display: inline-block;
    padding: 1px 5px;
    font-size: 10px;
    border-radius: 3px;
    color: #475569;
    white-space: nowrap;
}

.history-item-time {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: 2px;
}

.history-item-actions {
    opacity: 0;
    transition: opacity 0.2s;
    display: flex;
    gap: 2px;
    flex-shrink: 0;
}

.history-item-tag-btn {
    padding: 4px;
}

.history-item-delete {
    opacity: inherit;
    transition: opacity 0.2s;
    flex-shrink: 0;
}

/* ==================== 快捷回复按钮 ==================== */
.quick-replies {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.quick-reply-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--btn-color, #2563eb);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--btn-color, #2563eb);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.quick-reply-btn:hover {
    background: var(--btn-color, #2563eb);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

/* ==================== 配置面板 ==================== */
.config-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

/* ==================== 产品面板布局 ==================== */
.product-panel-layout {
    display: flex;
    gap: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.products-sidebar {
    width: 300px;
    flex-shrink: 0;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-height: calc(100vh - 140px);
}

.products-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

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

.products-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.product-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: var(--spacing-xs);
    border: 1px solid transparent;
}

.product-item:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

.product-item.active {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

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

.product-item-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-item.active .product-item-name {
    color: var(--primary-color);
}

.product-item-desc {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-item-actions {
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity 0.2s;
}

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

.product-item.active .product-item-actions {
    opacity: 1;
}

.product-copy-btn,
.product-delete-btn {
    padding: 4px;
    color: var(--text-secondary);
}

.product-copy-btn:hover {
    color: var(--primary-color);
}

.product-delete-btn:hover {
    color: var(--error-color);
}

.product-editor {
    flex: 1;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    max-width: 900px;
}

.config-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
}

.config-header h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.config-header .subtitle {
    opacity: 0.9;
    font-size: var(--font-size-sm);
}

.config-form {
    padding: var(--spacing-xl);
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-md);
    transition: border-color 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.api-key-input {
    display: flex;
    gap: var(--spacing-sm);
}

.api-key-input .form-input {
    flex: 1;
}

/* ==================== 复选框和单选框 ==================== */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.radio-group {
    display: flex;
    gap: var(--spacing-lg);
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: normal;
}

.radio-group input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* ==================== FAQ项目 ==================== */
.faq-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.faq-item .form-textarea {
    min-height: 60px;
}

/* ==================== 配置节 ==================== */
.config-section {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.config-section h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* ==================== 表单操作 ==================== */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

/* ==================== Toast提示 ==================== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--text-primary);
    color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--danger-color);
}

/* ==================== 加载遮罩 ==================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    color: white;
}

.loading-overlay.show {
    display: flex;
}

.loading-content {
    background: linear-gradient(135deg, #1e293b, #334155);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    text-align: center;
    min-width: 320px;
    max-width: 400px;
}

.loading-spinner {
    width: 56px;
    height: 56px;
    border: 5px solid rgba(255, 255, 255, 0.15);
    border-top-color: #60a5fa;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

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

.loading-message {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.loading-progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.loading-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #60a5fa, #3b82f6);
    border-radius: 10px;
    width: 0%;
    animation: progress 2s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(96, 165, 250, 0.5);
}

@keyframes progress {
    0% {
        width: 0%;
        transform: translateX(0);
    }
    30% {
        width: 30%;
    }
    50% {
        width: 50%;
    }
    70% {
        width: 70%;
    }
    100% {
        width: 100%;
        transform: translateX(0);
    }
}

.loading-status {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .history-sidebar {
        width: 260px;
    }

    .chat-container {
        margin-left: 284px;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .logo {
        width: 100%;
        justify-content: center;
    }

    .logo-text {
        font-size: var(--font-size-lg);
    }

    .nav-tabs {
        width: 100%;
        justify-content: space-around;
        gap: var(--spacing-xs);
    }

    .nav-tab {
        flex: 1;
        justify-content: center;
        padding: var(--spacing-xs);
        font-size: var(--font-size-xs);
    }

    .main-content {
        padding: var(--spacing-sm);
    }

    .chat-container {
        height: calc(100vh - 140px);
        border-radius: var(--radius-md);
        margin-left: 0;
    }

    .chat-settings-bar {
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        align-items: center;
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .style-select {
        flex-shrink: 0;
        font-size: var(--font-size-xs);
        padding: 4px var(--spacing-sm);
    }

    .response-length {
        flex-shrink: 0;
        font-size: var(--font-size-xs);
    }

    .response-length label {
        display: none;
    }

    .response-length input[type="range"] {
        width: 60px;
    }

    #export-chat {
        flex-shrink: 0;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    #export-chat span {
        display: none;
    }

    /* 移动端隐藏历史侧边栏 */
    .history-sidebar {
        display: none;
    }

    /* 移动端快捷回复按钮优化 */
    .quick-replies {
        padding: var(--spacing-xs) var(--spacing-sm);
        gap: 4px;
        overflow-x: auto;
        flex-wrap: nowrap;
    }

    .quick-reply-btn {
        padding: 4px var(--spacing-xs);
        font-size: 10px;
        flex-shrink: 0;
    }

    .quick-reply-btn svg {
        width: 12px;
        height: 12px;
    }

    .quick-reply-btn span {
        font-size: 10px;
    }

    .message {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }

    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 11px;
    }

    .message-content {
        max-width: 80%;
    }

    .message-bubble {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    /* 移动端建议卡片更紧凑 */
    .suggestion-card {
        max-width: 100%;
        padding: 3px 6px;
        margin-top: 3px;
    }

    .suggestion-header {
        font-size: 8px;
        margin-bottom: 1px;
    }

    .suggestion-header svg {
        width: 9px;
        height: 9px;
    }

    .suggestion-content {
        font-size: 9px;
        line-height: 1.2;
    }

    .config-container {
        border-radius: var(--radius-md);
    }

    .config-header {
        padding: var(--spacing-lg);
    }

    .config-header h2 {
        font-size: var(--font-size-xl);
    }

    .config-form {
        padding: var(--spacing-md);
    }

    .form-group {
        margin-bottom: var(--spacing-md);
    }

    .form-group label {
        font-size: var(--font-size-xs);
    }

    .form-input,
    .form-textarea,
    .form-select {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm);
    }

    .form-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-lg);
    }

    .form-actions button {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .input-container {
        padding: var(--spacing-sm);
    }

    #user-input {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm);
        min-height: 60px;
    }

    .input-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }

    .input-hint {
        font-size: 10px;
    }

    .input-actions .btn-primary {
        width: 100%;
        justify-content: center;
    }

    /* 移动端模态框 */
    .modal {
        max-height: 95vh;
        margin: var(--spacing-sm);
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-sm);
    }

    .modal-header h3 {
        font-size: var(--font-size-lg);
    }

    /* 配置头部移动端适配 */
    .config-header-content {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .btn-import {
        width: 100%;
        font-size: var(--font-size-sm);
    }

    /* FAQ移动端 */
    .faq-item {
        padding: var(--spacing-sm);
    }

    .faq-item .form-textarea {
        min-height: 50px;
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: var(--font-size-lg);
    }

    .nav-tab {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .nav-tab span {
        display: none;
    }

    .message-bubble {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* 移动端始终显示复制按钮 */
    .copy-btn {
        opacity: 1;
        background: rgba(255, 255, 255, 0.95);
    }
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: var(--radius-sm);
}

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

/* ==================== 打印样式 ==================== */
@media print {
    .header,
    .chat-settings-bar,
    .input-container,
    .history-sidebar {
        display: none !important;
    }

    .main-content {
        padding: 0;
    }

    .chat-container {
        height: auto;
        box-shadow: none;
    }
}

/* ==================== 标签对话框 ==================== */
.tag-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tag-dialog {
    background: white;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 320px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease;
    box-shadow: var(--shadow-lg);
}

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

.tag-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.tag-dialog-header h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
}

.tag-dialog-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: 300px;
}

.current-tags-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* 标签编辑项 */
.tag-item-edit {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
}

.tag-name-input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    outline: none;
}

.tag-name-input:focus {
    border-color: var(--primary-color);
}

.tag-color-input {
    width: 32px;
    height: 28px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
}

.remove-tag-btn {
    padding: 4px;
    flex-shrink: 0;
}

.available-tags {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tag-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.tag-checkbox:hover {
    background: var(--bg-secondary);
}

.tag-checkbox input {
    cursor: pointer;
}

.tag-checkbox span {
    font-size: var(--font-size-sm);
}

.custom-tag {
    display: flex;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.custom-tag-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.tag-dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ==================== AI一键体验弹窗 ==================== */
.products-header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-ai-experience {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-ai-experience:hover {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.experience-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.experience-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

.experience-tab.active {
    background: var(--primary-light);
    color: var(--primary-color);
}

.experience-content {
    display: none;
}

.experience-content.active {
    display: block;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.scenario-card {
    position: relative;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.scenario-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.scenario-card:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.scenario-card:has(input:checked) {
    border-color: var(--primary-color);
    background: var(--primary-light);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.scenario-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-xs);
}

.scenario-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.scenario-desc {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

#experience-custom-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-md);
    resize: vertical;
}

#experience-custom-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.btn-experience {
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
}

.btn-experience:hover {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
}
    background: var(--bg-secondary);
}

/* ==================== 模态对话框 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-lg);
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalIn 0.3s ease;
}

/* AI体验弹窗 - 更宽 */
.experience-modal {
    max-width: 800px;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.import-tips {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--primary-light);
    border-radius: var(--radius-md);
}

.tip-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.tip-item svg {
    flex-shrink: 0;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

/* ==================== 配置头部内容布局 ==================== */
.config-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.config-header-content > div {
    flex: 1;
}

.btn-import {
    flex-shrink: 0;
    white-space: nowrap;
}

/* ==================== 响应式 - 模态框 ==================== */
@media (max-width: 768px) {
    .modal {
        max-height: 95vh;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-md);
    }

    /* 产品面板响应式 */
    .product-panel-layout {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .products-sidebar {
        width: 100%;
        max-height: 200px;
    }

    .product-editor {
        max-width: 100%;
    }

    .config-header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .btn-import {
        width: 100%;
    }
}

/* ==================== 流式输出动画 ==================== */
.streaming-indicator {
    color: var(--text-secondary);
    font-style: italic;
}

.streaming-indicator .dots {
    display: inline-block;
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60%, 100% {
        content: '...';
    }
}

/* 流式输出的消息气泡打字效果 */
.message-bubble {
    position: relative;
}

.message.ai .message-bubble::after {
    content: '';
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
    display: none;
}

.message.ai.streaming .message-bubble::after {
    display: block;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

/* ==================== 使用说明面板 ==================== */
.help-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.help-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.help-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.help-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.help-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.help-section h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.help-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.help-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.help-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.help-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.help-card strong {
    color: var(--text-primary);
    font-weight: 600;
}

.help-card ul,
.help-card ol {
    margin-left: var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.help-card li {
    margin-bottom: var(--spacing-xs);
}

.help-card code {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: #dc2626;
}

.help-card a {
    color: var(--primary);
    text-decoration: none;
}

.help-card a:hover {
    text-decoration: underline;
}

.help-tip {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border-left: 4px solid #f59e0b;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    color: #78716c;
    line-height: 1.6;
}

.help-faq {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow-sm);
}

.faq-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* 使用说明响应式 */
@media (max-width: 768px) {
    .help-container {
        padding: var(--spacing-md);
    }

    .help-header h1 {
        font-size: 22px;
    }

    .help-section h2 {
        font-size: 18px;
    }

    .help-card {
        padding: var(--spacing-md);
    }

    .help-card ul,
    .help-card ol {
        margin-left: var(--spacing-md);
    }
}

/* ==================== 交互动画效果 ==================== */

/* 按钮悬停动画 */
.btn-primary,
.btn-secondary,
.btn-ai-experience,
.nav-tab {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-ai-experience:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.btn-primary:active,
.btn-secondary:active,
.btn-ai-experience:active {
    transform: translateY(0);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 导航标签悬停效果 */
.nav-tab {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-tab:hover {
    background: var(--bg-secondary);
    transform: scale(1.05);
}

.nav-tab.active {
    transform: scale(1.02);
}

/* 按钮点击波纹效果 */
.btn-primary::before,
.btn-secondary::before,
.btn-ai-experience::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:active::before,
.btn-secondary:active::before,
.btn-ai-experience:active::before {
    width: 300px;
    height: 300px;
}

/* 页面切换淡入淡出动画 */
.panel {
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
}

.panel.fade-in {
    animation: fadeIn 0.4s ease-out;
}

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

/* 卡片悬停效果 */
.help-card,
.config-section,
.product-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.help-card:hover,
.config-section:hover,
.product-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

/* 图标旋转动画 */
.nav-tab svg,
.btn-primary svg,
.btn-secondary svg,
.icon-btn svg {
    transition: transform 0.3s ease;
}

.nav-tab:hover svg,
.btn-primary:hover svg,
.btn-secondary:hover svg,
.icon-btn:hover svg {
    transform: scale(1.1) rotate(5deg);
}

/* Toast通知滑入动画 */
.toast {
    animation: slideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
    from {
        transform: translateX(-50%) translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

.toast.hide {
    animation: slideOut 0.3s ease-in forwards;
}

@keyframes slideOut {
    to {
        transform: translateX(-50%) translateY(-20px);
        opacity: 0;
    }
}

/* 快捷回复按钮动画 */
.quick-reply-btn {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.quick-reply-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

/* 输入框聚焦动画 */
.form-input,
textarea,
select {
    transition: all 0.3s ease;
}

.form-input:focus,
textarea:focus,
select:focus {
    transform: scale(1.01);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* 产品列表项动画 */
.product-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-item:hover {
    background: var(--bg-secondary);
    transform: translateX(4px);
}

.product-item.active {
    transform: translateX(8px);
    box-shadow: -4px 0 0 var(--primary);
}

/* 历史记录项悬停效果 */
.history-item {
    transition: all 0.2s ease;
}

.history-item:hover {
    background: var(--bg-hover);
    transform: translateX(4px);
}

/* 加载动画增强 */
.loading-spinner {
    animation: spin 1s linear infinite;
}

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

/* 脉冲动画（用于重要提示） */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* 摇晃动画（用于错误提示） */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-4px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(4px);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* 弹窗动画 */
.modal-overlay {
    transition: opacity 0.3s ease;
}

.modal-overlay.show {
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal {
    animation: modalSlideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideUp {
    from {
        transform: translateY(30px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* 场景卡片悬停效果 */
.scenario-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.scenario-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.scenario-card.checked {
    animation: checkPop 0.3s ease-out;
}

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

/* 品牌金句切换动画 */
#ai-quote {
    transition: all 0.4s ease;
}

#ai-quote:hover {
    transform: scale(1.02);
    color: var(--primary);
}

/* 移动端优化 */
@media (max-width: 768px) {
    /* 移动端减少动画强度 */
    .btn-primary:hover,
    .btn-secondary:hover,
    .btn-ai-experience:hover {
        transform: translateY(-1px);
    }

    .help-card:hover,
    .config-section:hover {
        transform: translateY(-2px);
    }

    /* 移动端禁用一些复杂的悬停效果 */
    .nav-tab:hover {
        transform: none;
    }

    /* 移动端触摸反馈 */
    .btn-primary:active,
    .btn-secondary:active,
    .quick-reply-btn:active,
    .nav-tab:active {
        transform: scale(0.97);
        opacity: 0.8;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn-primary:hover,
    .btn-secondary:hover {
        transform: none;
    }

    .btn-primary:active,
    .btn-secondary:active {
        transform: scale(0.97);
    }
}