/* ========================================
   SFChat - 云崽对话界面样式
   精美细腻的粉色系UI设计
   ======================================== */

/* ========== 字体定义 ========== */
@font-face {
    font-family: "LXGWWenKai";
    src: url('../fonts/LXGWWenKai-Regular-9375313a.ttf') format('truetype'),
         url('https://cdn.jsdelivr.net/npm/lxgw-wenkai-webfont@1.7.0/lxgwwenkai-regular.woff2') format('woff2');
    font-display: swap;
}

@font-face {
    font-family: "HYWenHei";
    src: url('../fonts/HYWH-65W.ttf') format('truetype');
    font-display: swap;
}

@font-face {
    font-family: "SpaceMono";
    src: url('../fonts/SpaceMono-Regular.ttf') format('truetype'),
         url('https://fonts.gstatic.com/s/spacemono/v12/i7dPIFZifjKcF5UAWdDRYEF8RQ.woff2') format('woff2');
    font-display: swap;
}

/* ========== CSS变量 - 主题配置 ========== */
:root {
    /* 主色调 */
    --primary-pink: #ff69b4;
    --primary-pink-light: #ffb6c1;
    --primary-pink-dark: #ff1493;
    --primary-pink-bg: #ffe6f0;
    --primary-pink-soft: #fff5f7;
    
    /* 辅助色 */
    --accent-blue: #e3f2fd;
    --accent-blue-dark: #2196f3;
    --accent-green: #27c93f;
    --accent-yellow: #ffbd2e;
    --accent-red: #ff5f56;
    
    /* 文字颜色 */
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --text-white: #ffffff;
    
    /* 背景色 */
    --bg-white: #ffffff;
    --bg-light: #f5f5f5;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.15);
    --shadow-pink: 0 4px 15px rgba(255, 105, 180, 0.2);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 50%;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-main: "LXGWWenKai", "HYWenHei", "Microsoft YaHei", sans-serif;
    --font-code: "SpaceMono", "Consolas", "Monaco", monospace;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-pink-bg) 0%, #ffd6e7 50%, var(--primary-pink-bg) 100%);
    background-attachment: fixed;
    font-family: var(--font-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-weight: 500;
    height: 100vh;
    overflow: hidden;
    color: var(--text-primary);
    line-height: 1.6;
}

/* 添加背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 182, 193, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 105, 180, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 218, 233, 0.4) 0%, transparent 30%);
    pointer-events: none;
    z-index: 0;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-pink-light), var(--primary-pink));
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-pink), var(--primary-pink-dark));
}

/* ========== 聊天容器 ========== */
.chat-container {
    width: 100%;
    max-width: 900px;
    height: calc(100vh - 48px);
    margin: 0 auto;
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--spacing-lg) var(--spacing-xl) 100px;
    box-shadow: var(--shadow-lg), inset 0 0 60px rgba(255, 182, 193, 0.1);
    word-wrap: break-word;
    overflow-wrap: break-word;
    overflow-y: auto;
    overflow-x: hidden;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 182, 193, 0.3);
}

/* 聊天容器装饰线 */
.chat-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--primary-pink-light), 
        var(--primary-pink), 
        var(--primary-pink-light), 
        transparent);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}


/* ========== 输入区域 ========== */
.input-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 900px;
    z-index: 100;
    transition: var(--transition-normal);
}

.input-wrapper {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 28px;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    border: 2px solid rgba(255, 182, 193, 0.3);
    box-shadow: var(--shadow-md), 0 0 40px rgba(255, 182, 193, 0.15);
    transition: var(--transition-normal);
}

.input-wrapper:focus-within {
    border-color: var(--primary-pink);
    box-shadow: var(--shadow-lg), 0 0 50px rgba(255, 105, 180, 0.2);
}

/* 图片预览容器 */
.image-preview-container {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    padding: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.image-preview-item {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 2px solid rgba(255, 182, 193, 0.3);
    transition: var(--transition-normal);
}

.image-preview-item:hover {
    transform: scale(1.05);
    border-color: var(--primary-pink);
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-preview-item .remove-image {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--primary-pink);
    font-size: 14px;
    line-height: 1;
    border: none;
    padding: 0;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.image-preview-item .remove-image:hover {
    background: var(--primary-pink);
    color: var(--text-white);
    transform: rotate(90deg);
}

/* 消息输入框 */
#message-input {
    flex: 1;
    min-height: 20px;
    max-height: 120px;
    padding: 10px 18px;
    border-radius: 20px;
    border: 2px solid transparent;
    background: rgba(255, 245, 247, 0.8);
    resize: none;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.4;
    color: var(--text-primary);
    transition: var(--transition-normal);
    overflow-y: hidden;
}

#message-input::placeholder {
    color: var(--text-light);
}

#message-input:focus {
    outline: none;
    border-color: var(--primary-pink-light);
    background: var(--bg-white);
    box-shadow: inset 0 0 10px rgba(255, 182, 193, 0.1);
}

/* ========== 按钮样式 ========== */
.action-button {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
    background: linear-gradient(135deg, var(--bg-white), var(--primary-pink-soft));
    color: var(--primary-pink);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.action-button:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-pink);
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
}

.action-button:active {
    transform: scale(0.95);
}

.action-button svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    transition: var(--transition-fast);
}

.action-button.active {
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
}

/* 发送按钮 */
#send-button {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border: none;
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-pink);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

#send-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    transition: var(--transition-normal);
}

#send-button:hover::before {
    width: 100%;
    height: 100%;
}

#send-button::after {
    content: '';
    display: block;
    width: 12px;
    height: 12px;
    border-top: 3px solid currentColor;
    border-right: 3px solid currentColor;
    transform: rotate(45deg);
    margin-left: -3px;
    transition: var(--transition-fast);
}

#send-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(255, 105, 180, 0.4);
}

#send-button:hover::after {
    transform: rotate(45deg) translateX(2px);
}

#send-button:active {
    transform: scale(0.95);
}

/* 模式切换按钮 */
.mode-toggle {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--radius-full);
    cursor: pointer;
    border: 2px solid transparent;
    background: linear-gradient(135deg, var(--bg-white), var(--primary-pink-soft));
    font-family: inherit;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-pink);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    letter-spacing: 1px;
}

.mode-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-pink);
}

.mode-toggle.ss-mode {
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
    border-color: var(--primary-pink);
}

.mode-toggle.gg-mode {
    background: linear-gradient(135deg, #a8e6cf, #56ab91);
    color: var(--text-white);
    border-color: #56ab91;
}

.mode-toggle.dd-mode {
    background: linear-gradient(135deg, #90caf9, var(--accent-blue-dark));
    color: var(--text-white);
    border-color: var(--accent-blue-dark);
}


/* ========== 消息气泡 ========== */
.message {
    display: flex;
    margin-bottom: var(--spacing-lg);
    align-items: flex-start;
    position: relative;
    padding-left: 50px;
    min-height: 50px;
    animation: messageSlideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: bottom;
}

@keyframes messageSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message.right {
    flex-direction: row-reverse;
    padding-left: 0;
    padding-right: 50px;
}

/* 头像 */
.avatar {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    border: 3px solid var(--bg-white);
    box-shadow: var(--shadow-md);
    position: absolute;
    top: 0;
    background-size: cover;
    background-position: center;
    transition: var(--transition-normal);
}

.avatar:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.message.left .avatar {
    left: 0;
    background-color: var(--primary-pink-light);
}

.message.right .avatar {
    right: 0;
    background-color: var(--accent-blue);
}

/* 消息内容 */
.message-content {
    max-width: calc(100% - 20px);
    min-width: 60px;
    padding: 14px 18px;
    border-radius: var(--radius-xl);
    position: relative;
    box-shadow: var(--shadow-sm);
    word-wrap: break-word;
    overflow-wrap: break-word;
    animation: popIn 0.3s ease-out;
}

@keyframes popIn {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 左侧消息（AI回复） */
.left .message-content {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--primary-pink-soft) 100%);
    border-top-left-radius: var(--radius-sm);
    border-left: 3px solid var(--primary-pink-light);
    box-shadow: 2px 2px 15px rgba(255, 182, 193, 0.2);
}

.left .message-content::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 14px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 10px 8px 0;
    border-color: transparent var(--bg-white) transparent transparent;
    filter: drop-shadow(-2px 0 2px rgba(255, 182, 193, 0.15));
}

/* 右侧消息（用户发送） */
.right .message-content {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #bbdefb 100%);
    border-top-right-radius: var(--radius-sm);
    box-shadow: -2px 2px 15px rgba(33, 150, 243, 0.15);
}

.right .message-content::before {
    content: '';
    position: absolute;
    right: -10px;
    top: 14px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 0 8px 10px;
    border-color: transparent transparent transparent var(--accent-blue);
}

/* ========== 等待回复动画 ========== */
.typing-indicator {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    padding-left: 50px;
    min-height: 50px;
    animation: messageSlideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

.typing-indicator .avatar {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    border: 3px solid var(--bg-white);
    box-shadow: var(--shadow-md);
    position: absolute;
    top: 0;
    left: 0;
    background-size: cover;
    background-position: center;
    background-color: var(--primary-pink-light);
}

.typing-indicator .message-content {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--primary-pink-soft) 100%);
    border-top-left-radius: var(--radius-sm);
    border-left: 3px solid var(--primary-pink-light);
    box-shadow: 2px 2px 15px rgba(255, 182, 193, 0.2);
    padding: 16px 20px;
    border-radius: var(--radius-xl);
    min-width: 70px;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.typing-indicator .message-content::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 14px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 10px 8px 0;
    border-color: transparent var(--bg-white) transparent transparent;
}

.typing-animation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.typing-circle {
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    border-radius: var(--radius-full);
    animation: typingBounce 1.4s infinite ease-in-out both;
    box-shadow: 0 2px 4px rgba(255, 105, 180, 0.3);
}

.typing-circle:nth-child(1) { animation-delay: -0.32s; }
.typing-circle:nth-child(2) { animation-delay: -0.16s; }
.typing-circle:nth-child(3) { animation-delay: 0s; }

@keyframes typingBounce {
    0%, 80%, 100% { 
        transform: scale(0.6) translateY(0);
        opacity: 0.5;
    }
    40% { 
        transform: scale(1) translateY(-6px);
        opacity: 1;
    }
}

/* ========== 无头像模式 ========== */
.no-avatar .message {
    padding-left: 0 !important;
    padding-right: 0 !important;
}

.no-avatar .avatar {
    display: none;
}

.no-avatar .message.left .message-content {
    margin-left: 0;
}

.no-avatar .message.right .message-content {
    margin-right: 0;
}

.no-avatar .typing-indicator {
    padding-left: 0 !important;
}

.no-avatar .typing-indicator .avatar {
    display: none;
}


/* ========== Markdown内容样式 ========== */
.markdown-content {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    font-weight: 500;
    letter-spacing: 0.3px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.markdown-content p {
    margin: 10px 0;
    line-height: 1.8;
}

.markdown-content p:first-child {
    margin-top: 0;
}

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

/* 标题样式 */
.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    color: var(--primary-pink);
    margin: 20px 0 12px;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0.5px;
}

.markdown-content h1 { font-size: 1.8em; }
.markdown-content h2 { font-size: 1.5em; }
.markdown-content h3 { font-size: 1.3em; }
.markdown-content h4 { font-size: 1.15em; }
.markdown-content h5 { font-size: 1.05em; }
.markdown-content h6 { font-size: 1em; }

.markdown-content h1::after,
.markdown-content h2::after {
    content: "";
    display: block;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-pink-light), transparent);
    margin-top: 6px;
    border-radius: 2px;
}

/* 行内代码 */
.markdown-content code:not(pre code) {
    background: linear-gradient(135deg, rgba(255, 182, 193, 0.15), rgba(255, 105, 180, 0.1));
    color: var(--primary-pink-dark);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-family: var(--font-code);
    font-size: 0.9em;
    border: 1px solid rgba(255, 182, 193, 0.3);
    white-space: pre-wrap;
    word-break: break-word;
}

/* 代码块容器 - iOS风格圆角 */
.markdown-content pre {
    background: linear-gradient(145deg, #1a1b26, #24253a);
    padding: 0;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    margin: 16px 0;
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.1),
        0 10px 40px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    position: relative;
    transition: var(--transition-normal);
}

.markdown-content pre:hover {
    box-shadow: 
        0 6px 12px rgba(0, 0, 0, 0.15),
        0 15px 50px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

/* Mac/iOS风格标题栏 */
.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px 16px 0 0;
}

.code-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.code-dots {
    display: flex;
    gap: 8px;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
    box-shadow: inset 0 -1px 2px rgba(0, 0, 0, 0.2);
}

.code-dot.red { 
    background: linear-gradient(180deg, #ff6b6b, #ee5a5a);
}
.code-dot.yellow { 
    background: linear-gradient(180deg, #ffd93d, #f0c929);
}
.code-dot.green { 
    background: linear-gradient(180deg, #6bcb77, #5ab868);
}

.code-dot:hover {
    transform: scale(1.15);
}

.code-lang {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.45);
    font-family: var(--font-main);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-left: 8px;
    font-weight: 500;
}

.code-copy-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 11px;
    font-family: var(--font-main);
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition-fast);
}

.code-copy-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
}

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

.code-copy-btn.copied {
    color: var(--accent-green);
    background: rgba(107, 203, 119, 0.15);
    border-color: rgba(107, 203, 119, 0.3);
}

.code-copy-btn svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* 代码内容区域 */
.markdown-content pre code {
    display: block;
    padding: 18px 20px;
    overflow-x: auto;
    font-family: var(--font-code);
    font-size: 13px;
    line-height: 1.7;
    color: #cdd6f4;
    background: transparent;
    border: none;
    border-radius: 0 0 16px 16px;
}

/* 代码滚动条 - iOS风格 */
.markdown-content pre code::-webkit-scrollbar {
    height: 6px;
}

.markdown-content pre code::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    margin: 0 12px;
}

.markdown-content pre code::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

.markdown-content pre code::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* 代码高亮主题 - Catppuccin Mocha */
.hljs {
    background: transparent;
    color: #cdd6f4;
}

.hljs-comment,
.hljs-quote { color: #6c7086; font-style: italic; }

.hljs-keyword,
.hljs-selector-tag { color: #cba6f7; font-weight: 600; }

.hljs-number,
.hljs-literal { color: #fab387; }

.hljs-string,
.hljs-doctag { color: #a6e3a1; }

.hljs-title,
.hljs-section,
.hljs-selector-id { color: #89b4fa; font-weight: 600; }

.hljs-type,
.hljs-class .hljs-title { color: #f9e2af; font-weight: 600; }

.hljs-tag,
.hljs-name,
.hljs-attribute { color: #89dceb; }

.hljs-variable,
.hljs-template-variable { color: #f38ba8; }

.hljs-regexp,
.hljs-link { color: #f5c2e7; }

.hljs-symbol,
.hljs-bullet { color: #94e2d5; }

.hljs-built_in,
.hljs-builtin-name { color: #f9e2af; }

.hljs-meta { color: #74c7ec; font-weight: 600; }

.hljs-deletion { color: #f38ba8; background: rgba(243, 139, 168, 0.1); }
.hljs-addition { color: #a6e3a1; background: rgba(166, 227, 161, 0.1); }

/* 链接样式 */
.markdown-content a {
    color: var(--primary-pink);
    text-decoration: none;
    border-bottom: 1px dashed var(--primary-pink-light);
    transition: var(--transition-fast);
    padding-bottom: 1px;
}

.markdown-content a:hover {
    color: var(--primary-pink-dark);
    border-bottom-style: solid;
    background: linear-gradient(transparent 60%, rgba(255, 182, 193, 0.3) 60%);
}

/* 图片样式 */
.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 12px 0;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    cursor: pointer;
}

.markdown-content img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* 表格样式 */
.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.markdown-content th,
.markdown-content td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 182, 193, 0.2);
}

.markdown-content th {
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
    font-weight: 600;
}

.markdown-content tr:hover {
    background: rgba(255, 182, 193, 0.08);
}

.markdown-content tr:last-child td {
    border-bottom: none;
}

/* 引用块 */
.markdown-content blockquote {
    margin: 16px 0;
    padding: 12px 20px;
    border-left: 4px solid var(--primary-pink);
    background: linear-gradient(135deg, var(--primary-pink-soft), rgba(255, 182, 193, 0.1));
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.markdown-content blockquote p {
    margin: 0;
}

/* 列表样式 */
.markdown-content ul,
.markdown-content ol {
    padding-left: 24px;
    margin: 12px 0;
}

.markdown-content li {
    margin: 6px 0;
    line-height: 1.7;
}

.markdown-content ul li::marker {
    color: var(--primary-pink);
}

.markdown-content ol li::marker {
    color: var(--primary-pink);
    font-weight: 600;
}

/* 水平线 */
.markdown-content hr {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-pink-light), var(--primary-pink), var(--primary-pink-light), transparent);
    margin: 24px 0;
    border-radius: 2px;
}

/* 键盘按键 */
.markdown-content kbd {
    background: linear-gradient(180deg, #f7f7f7, #e8e8e8);
    border: 1px solid #ccc;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 0 #999, inset 0 0 0 1px #fff;
    color: var(--text-primary);
    display: inline-block;
    font-size: 0.85em;
    padding: 2px 8px;
    margin: 0 2px;
    font-family: var(--font-code);
}

/* 任务列表 */
.markdown-content input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--primary-pink);
    width: 16px;
    height: 16px;
    cursor: pointer;
}


/* ========== 设置面板 ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

#settings-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 90%;
    max-width: 480px;
    max-height: 85vh;
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 0;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

#settings-modal.active {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    visibility: visible;
}

#settings-modal h3 {
    color: var(--primary-pink);
    margin: 0;
    padding: 20px 24px;
    font-size: 1.3em;
    background: linear-gradient(135deg, var(--primary-pink-soft), rgba(255, 182, 193, 0.2));
    border-bottom: 1px solid rgba(255, 182, 193, 0.2);
    display: flex;
    align-items: center;
    gap: 10px;
}

#settings-modal h3::before {
    content: '⚙️';
}

.close-button {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--primary-pink);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
    z-index: 10;
}

.close-button:hover {
    background: var(--primary-pink-soft);
    transform: rotate(90deg);
}

.settings-content {
    flex: 1;
    overflow-y: auto;
}

/* 设置菜单标签 */
.settings-menu {
    display: flex;
    gap: 0;
    padding: 0;
    background: var(--bg-light);
    border-bottom: 1px solid rgba(255, 182, 193, 0.2);
}

.menu-item {
    flex: 1;
    padding: 14px 16px;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-normal);
    position: relative;
}

.menu-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--primary-pink);
    border-radius: 3px 3px 0 0;
    transition: var(--transition-normal);
}

.menu-item:hover {
    color: var(--primary-pink);
    background: rgba(255, 182, 193, 0.1);
}

.menu-item.active {
    color: var(--primary-pink);
    background: var(--bg-white);
}

.menu-item.active::after {
    width: 60%;
}

/* 设置标签页内容 */
.settings-tab {
    display: none;
    padding: 20px 24px;
}

.settings-tab.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.settings-item {
    margin-bottom: 18px;
}

.settings-item label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.settings-item input[type="text"],
.settings-item input[type="number"],
.settings-item input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid rgba(255, 182, 193, 0.3);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition-normal);
    background: var(--bg-white);
}

.settings-item input:focus {
    outline: none;
    border-color: var(--primary-pink);
    box-shadow: 0 0 0 3px rgba(255, 105, 180, 0.1);
}

.settings-item input::placeholder {
    color: var(--text-light);
}

.settings-button {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    transition: var(--transition-normal);
    margin-top: 8px;
    box-shadow: var(--shadow-pink);
}

.settings-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 105, 180, 0.4);
}

.settings-button:active {
    transform: translateY(0);
}

.settings-status {
    margin-top: 12px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    padding: 8px;
    border-radius: var(--radius-sm);
}

/* 工具按钮网格 */
.tools-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 4px;
}

.tool-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 16px;
    border: 2px solid transparent;
    background: linear-gradient(135deg, var(--primary-pink-soft), rgba(255, 182, 193, 0.2));
    color: var(--primary-pink);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    font-family: inherit;
}

.tool-button:hover {
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-pink);
}

.tool-button svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
}

.tool-button span {
    font-size: 13px;
    font-weight: 500;
}

/* 头像开关 */
.avatar-toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--primary-pink-soft), rgba(255, 182, 193, 0.15));
    border-radius: var(--radius-lg);
    margin-top: 16px;
}

.avatar-toggle-container span {
    color: var(--text-secondary);
    font-weight: 500;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #ccc;
    transition: var(--transition-normal);
    border-radius: 28px;
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: var(--bg-white);
    transition: var(--transition-normal);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
}

input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
}

input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

/* 关于页面 */
.about-content {
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-content h4 {
    color: var(--primary-pink);
    margin-bottom: 12px;
    font-size: 1.2em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.about-content h4::before {
    content: '💖';
}

.about-content h5 {
    color: var(--text-primary);
    margin: 18px 0 8px;
    font-size: 1em;
}

.about-content ul,
.about-content ol {
    padding-left: 24px;
    margin: 8px 0;
}

.about-content li {
    margin: 6px 0;
}

.about-content li::marker {
    color: var(--primary-pink);
}


/* ========== 消息提示和确认对话框 ========== */
.message-toast {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: linear-gradient(135deg, rgba(50, 50, 50, 0.95), rgba(30, 30, 30, 0.95));
    color: var(--text-white);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    pointer-events: none;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

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

.confirm-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--bg-white);
    padding: 28px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    z-index: 2001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    max-width: 320px;
    width: 90%;
    text-align: center;
}

.confirm-dialog.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.confirm-dialog .message {
    margin-bottom: 24px;
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.6;
    padding: 0;
    min-height: auto;
    animation: none;
}

.confirm-dialog .buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.confirm-dialog button {
    padding: 10px 28px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    transition: var(--transition-normal);
}

.confirm-dialog .confirm-btn {
    background: linear-gradient(135deg, var(--primary-pink-light), var(--primary-pink));
    color: var(--text-white);
    box-shadow: var(--shadow-pink);
}

.confirm-dialog .confirm-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 105, 180, 0.4);
}

.confirm-dialog .cancel-btn {
    background: var(--bg-light);
    color: var(--text-secondary);
}

.confirm-dialog .cancel-btn:hover {
    background: #e0e0e0;
}

/* ========== HTML/SVG预览容器 ========== */
.preview-container {
    margin: 16px 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid rgba(255, 182, 193, 0.3);
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--primary-pink-soft), rgba(255, 182, 193, 0.2));
    border-bottom: 1px solid rgba(255, 182, 193, 0.2);
}

.preview-header span {
    font-size: 13px;
    color: var(--primary-pink);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.preview-header span::before {
    content: '👁️';
}

.preview-toggle {
    padding: 6px 12px;
    background: var(--bg-white);
    border: 1px solid rgba(255, 182, 193, 0.3);
    border-radius: var(--radius-sm);
    color: var(--primary-pink);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
}

.preview-toggle:hover {
    background: var(--primary-pink);
    color: var(--text-white);
}

.preview-content {
    padding: 16px;
    min-height: 100px;
    background: var(--bg-white);
}

.preview-content iframe {
    width: 100%;
    border: none;
    min-height: 200px;
}

/* ========== 响应式设计 ========== */
@media screen and (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .chat-container {
        height: calc(100vh - 24px);
        padding: 16px 16px 90px;
        border-radius: var(--radius-lg);
    }
    
    .input-container {
        bottom: 16px;
        width: calc(100% - 24px);
    }
    
    .input-wrapper {
        padding: 6px 10px;
        border-radius: 24px;
    }
    
    #message-input {
        font-size: 16px;
        padding: 8px 14px;
    }
    
    .action-button {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }
    
    .action-button svg {
        width: 18px;
        height: 18px;
    }
    
    #send-button {
        width: 40px;
        height: 40px;
        min-width: 40px;
    }
    
    .mode-toggle {
        width: 36px;
        height: 36px;
        min-width: 36px;
        font-size: 12px;
    }
    
    .message {
        padding-left: 45px;
        margin-bottom: 16px;
    }
    
    .message.right {
        padding-right: 45px;
    }
    
    .avatar {
        width: 36px;
        height: 36px;
    }
    
    .message-content {
        padding: 12px 14px;
    }
    
    .markdown-content {
        font-size: 16px;
        line-height: 1.8;
    }
    
    #settings-modal {
        width: 95%;
        max-height: 80vh;
    }
    
    .settings-menu {
        flex-wrap: nowrap;
        overflow-x: auto;
    }
    
    .menu-item {
        padding: 12px 14px;
        font-size: 13px;
        white-space: nowrap;
    }
    
    .settings-tab {
        padding: 16px;
    }
    
    .tools-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .tool-button {
        padding: 16px 12px;
    }
    
    .tool-button svg {
        width: 24px;
        height: 24px;
    }
    
    .typing-indicator {
        padding-left: 45px;
    }
    
    .typing-indicator .avatar {
        width: 36px;
        height: 36px;
    }
}

@media screen and (max-width: 480px) {
    body {
        padding: 8px;
    }
    
    .chat-container {
        height: calc(100vh - 16px);
        padding: 12px 12px 85px;
    }
    
    .input-container {
        bottom: 12px;
        width: calc(100% - 16px);
    }
    
    .message {
        padding-left: 40px;
    }
    
    .message.right {
        padding-right: 40px;
    }
    
    .avatar {
        width: 32px;
        height: 32px;
    }
    
    .message-content {
        padding: 10px 12px;
        border-radius: 16px;
    }
    
    .markdown-content {
        font-size: 16px;
        line-height: 1.8;
    }
    
    .markdown-content pre {
        margin: 12px 0;
        border-radius: 12px;
    }
    
    .code-header {
        padding: 10px 14px;
        border-radius: 12px 12px 0 0;
    }
    
    .markdown-content pre code {
        padding: 14px;
        font-size: 12px;
        border-radius: 0 0 12px 12px;
    }
}

/* ========== 移动端键盘适配 ========== */
@media screen and (max-width: 768px) {
    .input-container {
        position: sticky;
        bottom: 12px;
        margin: 0 auto;
        transform: none;
        left: 0;
        z-index: 999;
    }
    
    body.keyboard-open .input-container {
        position: fixed;
    }
    
    body.keyboard-closed .input-container {
        position: sticky;
    }
}

/* ========== 动画效果 ========== */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* 加载骨架屏效果 */
.skeleton {
    background: linear-gradient(90deg, 
        var(--bg-light) 25%, 
        rgba(255, 182, 193, 0.2) 50%, 
        var(--bg-light) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* ========== 打印样式 ========== */
@media print {
    body {
        background: white;
        padding: 0;
    }
    
    .chat-container {
        box-shadow: none;
        border: none;
        height: auto;
        max-width: none;
    }
    
    .input-container,
    #settings-modal,
    .modal-overlay,
    .message-toast,
    .confirm-dialog {
        display: none !important;
    }
}


/* ========== LaTeX数学公式样式 ========== */
.math-block {
    display: block;
    text-align: center;
    margin: 16px 0;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(255, 245, 247, 0.8), rgba(255, 230, 240, 0.6));
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-pink-light);
    overflow-x: auto;
    overflow-y: hidden;
}

.math-inline {
    display: inline;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
}

/* 可复制公式的交互样式 */
.math-copyable {
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.math-copyable:hover {
    background: linear-gradient(135deg, rgba(255, 182, 193, 0.25), rgba(255, 105, 180, 0.15));
}

.math-copyable:active {
    transform: scale(0.98);
}

/* 复制成功动画 */
.math-copied {
    animation: mathCopyFlash 0.6s ease;
}

@keyframes mathCopyFlash {
    0% { 
        background: linear-gradient(135deg, rgba(107, 203, 119, 0.4), rgba(86, 171, 145, 0.3));
        box-shadow: 0 0 0 2px rgba(107, 203, 119, 0.5);
    }
    100% { 
        background: linear-gradient(135deg, rgba(255, 245, 247, 0.8), rgba(255, 230, 240, 0.6));
        box-shadow: none;
    }
}

.math-inline.math-copied {
    animation: mathInlineCopyFlash 0.6s ease;
}

@keyframes mathInlineCopyFlash {
    0% { 
        background: rgba(107, 203, 119, 0.3);
    }
    100% { 
        background: transparent;
    }
}

/* 公式悬停提示 */
.math-copyable::after {
    content: '点击复制';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    background: rgba(0, 0, 0, 0.75);
    color: white;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    pointer-events: none;
    z-index: 10;
    font-family: var(--font-main);
}

.math-copyable:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

.math-inline.math-copyable::after {
    bottom: auto;
    top: 100%;
    transform: translateX(-50%) translateY(-5px);
}

.math-inline.math-copyable:hover::after {
    transform: translateX(-50%) translateY(4px);
}

/* MathJax渲染后的样式调整 */
.markdown-content mjx-container {
    font-size: 1.1em !important;
}

.markdown-content mjx-container[display="true"] {
    margin: 8px 0 !important;
}

/* 确保公式不会溢出 */
.math-block mjx-container {
    max-width: 100%;
    overflow-x: auto;
}

/* 公式选中样式 */
.markdown-content mjx-container:focus {
    outline: 2px solid var(--primary-pink-light);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* 公式加载占位符 */
.math-loading {
    display: inline-block;
    color: var(--text-light);
    font-style: italic;
    padding: 4px 8px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    animation: pulse 1.5s infinite;
}