/**
 * 思悟数学 - 智能助手组件样式
 * 使用 .ai-assistant- 前缀避免样式冲突
 */

/* ==================== 变量定义 ==================== */
:root {
    --ai-assistant-primary: #667eea;
    --ai-assistant-secondary: #764ba2;
    --ai-assistant-bg: #ffffff;
    --ai-assistant-text: #333333;
    --ai-assistant-border: #e0e0e0;
    --ai-assistant-shadow: rgba(0, 0, 0, 0.1);
    --ai-assistant-hover: #f8f9fa;
    --ai-assistant-user-bg: #667eea;
    --ai-assistant-user-text: #ffffff;
    --ai-assistant-bot-bg: #f0f0f0;
    --ai-assistant-bot-text: #333333;
}

/* ==================== 暗黑主题变量 ==================== */
.ai-assistant-dark-theme {
    --ai-assistant-bg: #1a1a1a;
    --ai-assistant-text: #e0e0e0;
    --ai-assistant-border: #333333;
    --ai-assistant-shadow: rgba(0, 0, 0, 0.5);
    --ai-assistant-hover: #2a2a2a;
    --ai-assistant-bot-bg: #2a2a2a;
    --ai-assistant-bot-text: #e0e0e0;
}

/* ==================== 浮动按钮 ==================== */
.ai-assistant-float-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white;
    border: none;
    box-shadow: 0 4px 12px var(--ai-assistant-shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all 0.3s ease;
    z-index: 9998;
}

.ai-assistant-float-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.ai-assistant-float-button.hidden {
    display: none;
}

/* ==================== 主容器 ==================== */
.ai-assistant-container {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 400px;
    height: 600px;
    background: var(--ai-assistant-bg);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--ai-assistant-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 9999;
    transition: all 0.3s ease;
}

.ai-assistant-container.minimized {
    display: none;
}

/* ==================== 全屏模式 ==================== */
.ai-assistant-container.ai-assistant-fullscreen {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    width: 900px !important;
    height: 700px !important;
    max-width: 95vw !important;
    max-height: 95vh !important;
    bottom: auto !important;
    right: auto !important;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 10000 !important;
}

/* ==================== 头部 ==================== */
.ai-assistant-header {
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    position: relative;
    /* ✅ 添加相对定位 */
    z-index: 2;
    /* ✅ 确保头部在背景图上方 */
}

.ai-assistant-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ai-assistant-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
}

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

.ai-assistant-title {
    font-size: 16px;
    font-weight: 600;
}

.ai-assistant-status {
    font-size: 12px;
    opacity: 0.9;
}

.ai-assistant-header-actions {
    display: flex;
    gap: 8px;
}

.ai-assistant-header-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.ai-assistant-header-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ==================== 消息区域 ==================== */
.ai-assistant-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f8f9fa;
    position: relative;
    /* ✅ 添加相对定位 */
    z-index: 2;
    /* ✅ 修改z-index从10到2,确保消息在背景图上方但不会太高 */
}

.ai-assistant-message {
    margin-bottom: 16px;
    display: flex;
    gap: 10px;
    animation: ai-assistant-message-in 0.3s ease;
}

@keyframes ai-assistant-message-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.ai-assistant-message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.ai-assistant-message.user .ai-assistant-message-avatar {
    background: var(--ai-assistant-user-bg);
    color: white;
}

.ai-assistant-message.assistant .ai-assistant-message-avatar {
    background: var(--ai-assistant-primary);
    color: white;
}

.ai-assistant-message-bubble {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 12px;
    word-wrap: break-word;
    line-height: 1.5;
}

.ai-assistant-message.user .ai-assistant-message-bubble {
    background: var(--ai-assistant-user-bg);
    color: var(--ai-assistant-user-text);
    border-bottom-right-radius: 4px;
}

.ai-assistant-message.assistant .ai-assistant-message-bubble {
    background: white;
    color: var(--ai-assistant-bot-text);
    border-bottom-left-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.ai-assistant-message-time {
    font-size: 11px;
    color: #999;
    margin-top: 4px;
    text-align: right;
}

/* ==================== 输入区域 ==================== */
.ai-assistant-input-area {
    padding: 16px 20px;
    background: white;
    border-top: 1px solid var(--ai-assistant-border);
    flex-shrink: 0;
    position: relative;
    /* ✅ 添加相对定位 */
    z-index: 2;
    /* ✅ 确保输入区域在背景图上方 */
}

/* ==================== 快捷操作按钮 ==================== */
.ai-assistant-quick-actions {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.ai-assistant-quick-btn {
    flex: 1;
    min-width: 38px;
    height: 34px;
    background: var(--ai-assistant-hover);
    border: 1px solid var(--ai-assistant-border);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--ai-assistant-text);
    transition: all 0.2s;
}

.ai-assistant-quick-btn:hover {
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.ai-assistant-quick-btn i {
    font-size: 15px;
}

.ai-assistant-input-wrapper {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.ai-assistant-input {
    flex: 1;
    border: 1px solid var(--ai-assistant-border);
    border-radius: 20px;
    padding: 10px 16px;
    font-size: 14px;
    resize: none;
    max-height: 100px;
    font-family: inherit;
    transition: border-color 0.2s;
    /* ✅ 修复文字方向 - 确保从左到右显示 */
    direction: ltr !important;
    text-align: left !important;
    writing-mode: horizontal-tb !important;
    unicode-bidi: normal !important;
    /* 确保文字正常显示 */
    vertical-align: top !important;
    line-height: 1.5 !important;
}

.ai-assistant-input:focus {
    outline: none;
    border-color: var(--ai-assistant-primary);
}

.ai-assistant-send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--ai-assistant-primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.ai-assistant-send-btn:hover:not(:disabled) {
    background: var(--ai-assistant-secondary);
    transform: scale(1.05);
}

.ai-assistant-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== 加载状态 ==================== */
.ai-assistant-typing {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
}

.ai-assistant-typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #999;
    animation: ai-assistant-typing 1.4s infinite;
}

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

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

@keyframes ai-assistant-typing {

    0%,
    60%,
    100% {
        transform: translateY(0);
        opacity: 0.5;
    }

    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* ==================== 欢迎消息 ==================== */
.ai-assistant-welcome {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.ai-assistant-welcome-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.ai-assistant-welcome-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--ai-assistant-primary);
}

.ai-assistant-welcome-text {
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 对话建议 ==================== */
.ai-assistant-suggestions {
    padding: 12px 20px;
    background: #f8f9fa;
    border-top: 1px solid var(--ai-assistant-border);
}

.ai-assistant-suggestions-title {
    font-size: 12px;
    color: #666;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.ai-assistant-suggestions-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ai-assistant-suggestion-item {
    background: white;
    border: 1px solid var(--ai-assistant-border);
    border-radius: 12px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--ai-assistant-text);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.ai-assistant-suggestion-item:hover {
    background: var(--ai-assistant-primary);
    color: white;
    border-color: var(--ai-assistant-primary);
    transform: translateX(4px);
}

/* ==================== 设置面板 ==================== */
.ai-assistant-settings {
    position: absolute;
    top: 60px;
    right: 0;
    width: 100%;
    max-height: calc(100% - 60px);
    background: white;
    overflow-y: auto;
    z-index: 100;
    /* ✅ 提高z-index,确保设置面板在所有内容上方 */
    display: none;
}

.ai-assistant-settings.active {
    display: block;
}

.ai-assistant-settings-section {
    padding: 20px;
    border-bottom: 1px solid var(--ai-assistant-border);
}

.ai-assistant-settings-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--ai-assistant-text);
    margin-bottom: 12px;
}

.ai-assistant-settings-item {
    margin-bottom: 16px;
}

.ai-assistant-settings-label {
    font-size: 13px;
    color: #666;
    margin-bottom: 6px;
    display: block;
}

.ai-assistant-settings-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--ai-assistant-border);
    border-radius: 8px;
    font-size: 14px;
}

.ai-assistant-settings-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--ai-assistant-border);
    border-radius: 8px;
    font-size: 14px;
    background: white;
}

/* 头像上传 */
.ai-assistant-avatar-upload {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ai-assistant-avatar-preview {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    overflow: hidden;
}

.ai-assistant-avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ai-assistant-upload-btn {
    padding: 8px 16px;
    background: var(--ai-assistant-primary);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.2s;
}

.ai-assistant-upload-btn:hover {
    background: var(--ai-assistant-secondary);
}

.ai-assistant-upload-input {
    display: none;
}

/* 主题快速选择 */
.ai-assistant-theme-quick-select {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ai-assistant-theme-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px;
    border: 2px solid var(--ai-assistant-border);
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.ai-assistant-theme-btn:hover {
    border-color: var(--ai-assistant-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.ai-assistant-theme-btn.active {
    border-color: var(--ai-assistant-primary);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.ai-assistant-theme-btn[data-theme="yoimiya"] {
    border-color: #FFD7B5;
}

.ai-assistant-theme-btn[data-theme="yoimiya"]:hover {
    border-color: #FF9966;
    box-shadow: 0 4px 12px rgba(255, 153, 102, 0.3);
}

.ai-assistant-theme-btn[data-theme="yoimiya"].active {
    background: linear-gradient(135deg, rgba(255, 153, 102, 0.1) 0%, rgba(255, 215, 0, 0.1) 100%);
}

.ai-assistant-theme-btn .theme-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.ai-assistant-theme-btn .theme-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--ai-assistant-text);
    margin-bottom: 4px;
}

.ai-assistant-theme-btn .theme-desc {
    font-size: 11px;
    color: #999;
}

/* 性格选择 */
.ai-assistant-personality-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.ai-assistant-personality-option {
    padding: 10px;
    border: 2px solid var(--ai-assistant-border);
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.ai-assistant-personality-option:hover {
    border-color: var(--ai-assistant-primary);
    background: #f8f9fa;
}

.ai-assistant-personality-option.active {
    border-color: var(--ai-assistant-primary);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.ai-assistant-personality-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--ai-assistant-text);
    margin-bottom: 4px;
}

.ai-assistant-personality-desc {
    font-size: 11px;
    color: #999;
}

/* 角色选择 */
.ai-assistant-role-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.ai-assistant-role-card {
    padding: 12px;
    border: 2px solid var(--ai-assistant-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.ai-assistant-role-card:hover {
    border-color: var(--ai-assistant-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.ai-assistant-role-card.active {
    border-color: var(--ai-assistant-primary);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.ai-assistant-role-avatar {
    font-size: 32px;
    margin-bottom: 8px;
}

.ai-assistant-role-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--ai-assistant-text);
    margin-bottom: 4px;
}

.ai-assistant-role-desc {
    font-size: 11px;
    color: #999;
    line-height: 1.4;
}

.ai-assistant-role-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--ai-assistant-primary);
    color: white;
    border-radius: 10px;
    font-size: 10px;
    margin-top: 4px;
}

/* 自定义角色创建 */
.ai-assistant-create-role-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
    margin-top: 12px;
}

.ai-assistant-create-role-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* ==================== AI角色生成器 ==================== */
.ai-assistant-character-generator {
    width: 100%;
}

.character-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.character-input-group input {
    flex: 1;
}

.generated-prompt-area {
    background: var(--ai-assistant-hover);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--ai-assistant-border);
}

.generated-prompt-area h4 {
    margin: 0 0 10px 0;
    font-size: 14px;
    color: var(--ai-assistant-text);
}

.generated-prompt-area textarea {
    width: 100%;
    resize: vertical;
    font-family: 'Courier New', monospace;
}

.prompt-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.prompt-actions button {
    flex: 1;
    padding: 8px 12px;
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.prompt-actions button:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* ==================== 导航链接样式 ==================== */
.ai-assistant-nav-link {
    display: inline-block;
    padding: 6px 12px;
    margin: 4px 4px;
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white !important;
    text-decoration: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(102, 126, 234, 0.2);
}

.ai-assistant-nav-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.4);
}

.ai-assistant-message-bubble a {
    color: var(--ai-assistant-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--ai-assistant-primary);
}

.ai-assistant-message-bubble a:hover {
    color: var(--ai-assistant-secondary);
    border-bottom-color: var(--ai-assistant-secondary);
}

.ai-assistant-message-bubble code {
    background: rgba(102, 126, 234, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {

    /* 移动端全屏显示 */
    .ai-assistant-container {
        position: fixed !important;
        top: 0 !important;
        bottom: 0 !important;
        right: 0 !important;
        left: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        max-width: 100vw !important;
        max-height: 100vh !important;
        border-radius: 0 !important;
        margin: 0 !important;
        transform: none !important;
    }

    /* 全屏模式下也保持全屏 */
    .ai-assistant-container.ai-assistant-fullscreen {
        position: fixed !important;
        top: 0 !important;
        bottom: 0 !important;
        right: 0 !important;
        left: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        max-width: 100vw !important;
        max-height: 100vh !important;
        border-radius: 0 !important;
        margin: 0 !important;
        transform: none !important;
    }

    /* 浮动按钮位置优化 */
    .ai-assistant-float-button {
        bottom: 20px;
        right: 20px;
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
    }

    /* 头部优化 */
    .ai-assistant-header {
        padding: 12px 15px;
    }

    .ai-assistant-title {
        font-size: 1rem;
    }

    .ai-assistant-header-btn {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    /* 消息区域优化 */
    .ai-assistant-messages {
        padding: 15px;
    }

    .ai-assistant-message {
        max-width: 85%;
    }

    .ai-assistant-message-content {
        font-size: 0.9rem;
        padding: 10px 14px;
    }

    /* 输入区域优化 */
    .ai-assistant-footer {
        padding: 12px 15px;
    }

    .ai-assistant-input {
        font-size: 0.9rem;
        padding: 10px 14px;
        min-height: 44px;
    }

    .ai-assistant-send-btn {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }

    /* 智能推荐优化 */
    .ai-assistant-smart-suggestions {
        padding: 10px 12px;
    }

    .ai-assistant-suggestion-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .ai-assistant-suggestion-btn {
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    /* 性格选择优化 */
    .ai-assistant-personality-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .ai-assistant-personality-btn {
        padding: 15px;
    }

    /* 设置面板优化 */
    .ai-assistant-settings {
        padding: 15px;
    }

    .ai-assistant-setting-item {
        padding: 12px;
    }

    /* 立绘优化显示 - 缩小并显示在对话框顶部 */
    .yoimiya-illustration-wrapper,
    .ganyu-illustration-wrapper {
        display: block !important;
        /* 不再隐藏 */
        position: absolute !important;
        /* 改为absolute定位 */
        top: 60px !important;
        /* 显示在顶部，留出标题栏空间 */
        left: 50% !important;
        transform: translateX(-50%) !important;
        right: auto !important;
        bottom: auto !important;
        width: 100px !important;
        /* 缩小宽度 */
        height: 120px !important;
        /* 缩小高度 */
        z-index: 1 !important;
        /* 低层级，不遮挡内容 */
        opacity: 0.5 !important;
        /* 半透明 */
        pointer-events: none !important;
        /* 不阻挡点击 */
    }

    /* 立绘图片样式 */
    .yoimiya-illustration-wrapper img,
    .ganyu-illustration-wrapper img,
    .yoimiya-character-illustration,
    .ganyu-character-illustration {
        display: block !important;
        width: 100% !important;
        height: 100% !important;
        object-fit: contain !important;
        animation: none !important;
        /* 移除动画，节省性能 */
        filter: drop-shadow(0 4px 12px rgba(255, 153, 102, 0.3)) !important;
    }
}

/* 超小屏幕优化 - 手机竖屏专用 */
@media (max-width: 480px) {
    .ai-assistant-float-button {
        width: 52px;
        height: 52px;
        font-size: 1.3rem;
        bottom: 15px;
        right: 15px;
        /* 支持iOS安全区域 */
        bottom: calc(15px + env(safe-area-inset-bottom));
        right: calc(15px + env(safe-area-inset-right));
    }

    .ai-assistant-header {
        padding: 10px 12px;
    }

    .ai-assistant-title {
        font-size: 0.9rem;
    }

    .ai-assistant-header-btn {
        width: 30px;
        height: 30px;
        font-size: 0.85rem;
    }

    .ai-assistant-messages {
        padding: 12px;
    }

    .ai-assistant-message {
        max-width: 90%;
    }

    .ai-assistant-message-content {
        font-size: 0.85rem;
        padding: 8px 12px;
    }

    .ai-assistant-footer {
        padding: 10px 12px;
    }

    .ai-assistant-input {
        font-size: 0.85rem;
        padding: 8px 12px;
        min-height: 42px;
    }

    .ai-assistant-send-btn {
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }

    .ai-assistant-suggestion-btn {
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .ai-assistant-personality-btn {
        padding: 12px;
    }

    .ai-assistant-personality-icon {
        font-size: 2rem;
    }

    .ai-assistant-personality-name {
        font-size: 1rem;
    }

    .ai-assistant-personality-desc {
        font-size: 0.75rem;
    }
}

/* ==================== 滚动条样式 ==================== */
.ai-assistant-messages::-webkit-scrollbar,
.ai-assistant-settings::-webkit-scrollbar {
    width: 6px;
}

.ai-assistant-messages::-webkit-scrollbar-track,
.ai-assistant-settings::-webkit-scrollbar-track {
    background: transparent;
}

.ai-assistant-messages::-webkit-scrollbar-thumb,
.ai-assistant-settings::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.ai-assistant-messages::-webkit-scrollbar-thumb:hover,
.ai-assistant-settings::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* ========== 精选二次元角色样式 ========== */

.ai-assistant-settings-section-title {
    font-size: 16px;
    font-weight: bold;
    color: var(--ai-assistant-text);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.ai-assistant-premium-badge {
    display: inline-block;
    padding: 2px 8px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 12px;
    border-radius: 12px;
    margin-left: 8px;
    font-weight: normal;
}

.ai-assistant-settings-hint {
    font-size: 12px;
    color: #666;
    margin-bottom: 12px;
    line-height: 1.5;
}

.ai-assistant-premium-characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 12px;
}

.ai-assistant-premium-character-card {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
    border: 2px solid #667eea;
    border-radius: 12px;
    padding: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.ai-assistant-premium-character-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.ai-assistant-premium-character-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
}

.ai-assistant-premium-character-header {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.ai-assistant-premium-character-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    margin-right: 12px;
    border: 2px solid #667eea;
    object-fit: cover;
}

.ai-assistant-premium-character-info {
    flex: 1;
}

.ai-assistant-premium-character-name {
    font-size: 18px;
    font-weight: bold;
    color: #667eea;
    margin: 0 0 4px 0;
}

.ai-assistant-premium-character-source {
    font-size: 12px;
    color: #666;
    margin: 0;
}

.ai-assistant-premium-character-desc {
    font-size: 14px;
    color: #555;
    margin: 0 0 12px 0;
    line-height: 1.5;
}

.ai-assistant-premium-character-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.ai-assistant-tag {
    display: inline-block;
    padding: 4px 10px;
    background: #f0f0f0;
    color: #666;
    font-size: 12px;
    border-radius: 12px;
}

.ai-assistant-premium-character-apply-btn {
    width: 100%;
    padding: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ai-assistant-premium-character-apply-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.ai-assistant-premium-character-apply-btn:active {
    transform: scale(0.98);
}

/* ==================== 智能推荐区域 ==================== */
.ai-assistant-smart-suggestions {
    padding: 6px 12px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-top: 1px solid var(--ai-assistant-border);
    border-bottom: 1px solid var(--ai-assistant-border);
    transition: all 0.3s ease;
}

.smart-suggestions-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--ai-assistant-primary);
    margin-bottom: 0;
    /* 默认折叠时无底部间距 */
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
    cursor: pointer;
    user-select: none;
    padding: 4px 6px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.smart-suggestions-title:hover {
    background: rgba(102, 126, 234, 0.1);
}

.toggle-icon {
    font-size: 10px;
    transition: transform 0.3s ease;
    color: var(--ai-assistant-primary);
}

/* 默认折叠状态 */
.smart-suggestions-list {
    display: none;
    /* 默认隐藏 */
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-top: 8px;
    max-height: 100px;
    overflow-y: auto;
}

/* 展开状态 */
.smart-suggestions-list.expanded {
    display: grid;
}

.smart-suggestion-btn {
    padding: 6px 10px;
    background: white;
    border: 1px solid var(--ai-assistant-border);
    border-radius: 6px;
    font-size: 11px;
    color: var(--ai-assistant-text);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.smart-suggestion-btn:hover {
    background: var(--ai-assistant-primary);
    color: white;
    border-color: var(--ai-assistant-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.2);
}

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

/* 暗黑主题 */
.ai-assistant-dark-theme .smart-suggestion-btn {
    background: #2a2a2a;
    border-color: #444;
    color: #e0e0e0;
}

.ai-assistant-dark-theme .smart-suggestion-btn:hover {
    background: var(--ai-assistant-primary);
    color: white;
}

/* 全屏模式下的智能推荐优化 */
.ai-assistant-fullscreen .ai-assistant-smart-suggestions {
    max-height: 150px;
    padding: 10px 15px;
}

.ai-assistant-fullscreen .smart-suggestions-title {
    font-size: 12px;
    margin-bottom: 8px;
}

.ai-assistant-fullscreen .smart-suggestions-list {
    gap: 8px;
}

.ai-assistant-fullscreen .smart-suggestion-btn {
    padding: 8px 12px;
    font-size: 12px;
}

/* ==================== 功能箱弹窗样式 ==================== */
.ai-assistant-feature-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.feature-modal-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.feature-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    background: linear-gradient(135deg, var(--ai-assistant-primary) 0%, var(--ai-assistant-secondary) 100%);
    color: white;
}

.feature-modal-header h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

.feature-modal-close {
    width: 35px;
    height: 35px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.feature-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.feature-modal-body {
    padding: 25px;
    max-height: calc(80vh - 80px);
    overflow-y: auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
}

.feature-grid-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px 15px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid transparent;
    border-radius: 15px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-grid-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-color: var(--ai-assistant-primary);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
}

.feature-grid-icon {
    font-size: 36px;
    margin-bottom: 12px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.feature-grid-name {
    font-size: 15px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.feature-grid-desc {
    font-size: 12px;
    color: #666;
    line-height: 1.5;
    opacity: 0.9;
}

/* 暗黑主题 */
.ai-assistant-dark-theme .feature-modal-content {
    background: #1a1a1a;
}

.ai-assistant-dark-theme .feature-grid-item {
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
}

.ai-assistant-dark-theme .feature-grid-item:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
}

.ai-assistant-dark-theme .feature-grid-name {
    color: #e0e0e0;
}

.ai-assistant-dark-theme .feature-grid-desc {
    color: #999;
}

/* 响应式 - 手机端紧凑3列布局（使用mobile-ui-mode类选择器） */
body.mobile-ui-mode .ai-assistant-feature-modal {
    align-items: center;
    padding: 20px 10px;
}

body.mobile-ui-mode .feature-modal-content {
    width: 95%;
    max-width: 400px;
    max-height: 80vh;
    border-radius: 20px;
}

body.mobile-ui-mode .feature-modal-header {
    /* 手机端安全区域适配 */
    padding: 40px 16px 12px 16px !important;
}

body.mobile-ui-mode .feature-modal-header h3 {
    font-size: 16px;
}

body.mobile-ui-mode .feature-modal-close {
    width: 28px;
    height: 28px;
    font-size: 18px;
}

body.mobile-ui-mode .feature-modal-body {
    padding: 10px;
    max-height: calc(80vh - 50px);
}

/* 3列紧凑网格 - 无需滚动即可看到所有功能 */
body.mobile-ui-mode .feature-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
}

body.mobile-ui-mode .feature-grid-item {
    padding: 10px 4px !important;
    border-radius: 10px !important;
    min-height: auto !important;
}

body.mobile-ui-mode .feature-grid-icon {
    font-size: 22px !important;
    margin-bottom: 4px !important;
}

body.mobile-ui-mode .feature-grid-name {
    font-size: 11px !important;
    font-weight: 600 !important;
    margin-bottom: 2px !important;
    line-height: 1.2 !important;
}

body.mobile-ui-mode .feature-grid-desc {
    font-size: 8px !important;
    line-height: 1.2 !important;
    opacity: 0.7 !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 1 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
}

/* ==================== 命令自动补全 ==================== */
.ai-assistant-command-suggestions {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: var(--ai-assistant-bg);
    border: 1px solid var(--ai-assistant-border);
    border-radius: 8px 8px 0 0;
    box-shadow: 0 -2px 8px var(--ai-assistant-shadow);
    max-height: 200px;
    overflow-y: auto;
    display: none;
    z-index: 10;
}

.ai-assistant-command-suggestion {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid var(--ai-assistant-border);
}

.ai-assistant-command-suggestion:last-child {
    border-bottom: none;
}

.ai-assistant-command-suggestion:hover {
    background-color: var(--ai-assistant-hover);
}

.ai-assistant-command-suggestion .command-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.ai-assistant-command-suggestion .command-name {
    font-weight: 600;
    color: var(--ai-assistant-primary);
    min-width: 80px;
    flex-shrink: 0;
}

.ai-assistant-command-suggestion .command-desc {
    color: var(--ai-assistant-text);
    opacity: 0.7;
    font-size: 13px;
}

/* 移动端隐藏命令描述 */
@media (max-width: 768px) {
    .ai-assistant-command-suggestion .command-desc {
        display: none;
    }
}

/* ==================== 智能推荐通知 ==================== */
.smart-recommendation {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 16px;
    color: white;
    margin: 10px 0;
}

.recommendation-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-weight: 600;
    font-size: 16px;
}

.recommendation-header .icon {
    font-size: 20px;
}

.recommendation-item {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    backdrop-filter: blur(10px);
}

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

.recommendation-item .item-title {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 14px;
}

.recommendation-item .item-reason {
    font-size: 12px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.recommendation-item .item-action {
    background: white;
    color: var(--ai-assistant-primary);
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.recommendation-item .item-action:hover {
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 角标动画 */
@keyframes ai-assistant-badge-pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}