/* 新的现代化样式 */

/* CSS变量定义 */
:root {
    /* B站风格颜色系统 */
    --primary-color: #FB7299;
    --primary-hover: #FC8BAB;
    --primary-dark: #E85A81;
    --accent-color: #00A1D6;
    --accent-hover: #00B5E5;
    --danger-color: #F25D8E;
    --warning-color: #FFB027;
    --info-color: #00A1D6;

    /* 背景色 */
    --bg-primary: #f8f9fa;
    --bg-secondary: #e9ecef;
    --surface-color: #ffffff;
    --surface-hover: #f8f9fa;

    /* 文字颜色 */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #868e96;
    --text-light: #adb5bd;

    /* 边框和分割线 */
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --border-dark: #adb5bd;

    /* 阴影 */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --shadow-hover: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.2);

    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* 字体 */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-xxl: 1.5rem;

    /* 过渡动画 */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;

    /* 容器宽度 */
    --container-max-width: 1400px;
    --content-max-width: 1200px;
}

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

/* 隐藏跳转链接和无障碍元素 */
.skip-link,
.skip-to-content,
a[href="#main"],
a[href="#content"],
[class*="skip"],
[class*="sr-only"]:not(:focus) {
    position: absolute !important;
    left: -10000px !important;
    top: -10000px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    clip: rect(1px, 1px, 1px, 1px) !important;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* 应用容器 */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 页头样式 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.header-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.title-icon {
    font-size: 1.2em;
}

.header-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-md);
    margin: 0;
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
    max-width: var(--container-max-width);
    margin: 0 auto;
    width: 100%;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}


/* SESSDATA 设置区域 */
.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

#save-sessdata-btn {
    min-width: 100px;
    background: var(--accent-color);
}

#save-sessdata-btn:hover {
    background: var(--accent-hover);
}

/* 搜索区域 */
.search-section {
    margin-bottom: var(--spacing-xl);
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
}

.search-form {
    background: var(--surface-color);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    transition: var(--transition-normal);
    background: var(--surface-color);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.search-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, #fb7299, #ff85a1);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 120px;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(251, 114, 153, 0.3);
}

.search-btn:hover {
    background: linear-gradient(135deg, #f85c85, #ff6b8a);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(251, 114, 153, 0.4);
}

.search-tips {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    justify-content: center;
}

/* 加载和错误状态 */
.loading-section,
.error-section {
    text-align: center;
    padding: var(--spacing-xxl);
}

.loading-container,
.error-container {
    background: var(--surface-color);
    padding: var(--spacing-xxl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    margin: 0 auto;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-light);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.error-title {
    font-size: var(--font-size-xl);
    color: var(--danger-color);
    margin-bottom: var(--spacing-md);
}

.retry-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
}

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

/* 结果展示区域 */
.result-section {
    animation: fadeInUp 0.6s ease-out;
}

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

.result-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* 操作按钮区域 - 顶部 B站风格 */
.actions-header {
    background: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-md);
}

/* B站风格按钮样式 */
.action-btn {
    padding: var(--spacing-md) var(--spacing-sm);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 70px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(145deg, #fafafa 0%, #f0f0f0 100%);
    border: 1px solid rgba(0,0,0,0.06);
}

.action-btn .btn-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.25s ease;
}

.action-btn .btn-icon svg {
    width: 20px;
    height: 20px;
    transition: all 0.25s ease;
}

.action-btn .btn-text {
    font-size: 12px;
    color: #666;
    transition: color 0.25s ease;
}

.action-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(251, 114, 153, 0.15);
}

.action-btn:active {
    transform: translateY(-1px);
}

/* 复制信息按钮 */
#copy-btn {
    background: linear-gradient(145deg, #fff5f7 0%, #ffe8ed 100%);
    border-color: rgba(251, 114, 153, 0.2);
}
#copy-btn .btn-icon { background: linear-gradient(135deg, #FB7299 0%, #F25D8E 100%); }
#copy-btn .btn-icon svg { color: white; stroke: white; }
#copy-btn:hover { background: linear-gradient(145deg, #ffecf0 0%, #ffdde4 100%); border-color: #FB7299; }
#copy-btn:hover .btn-text { color: #FB7299; }

/* 导出MD按钮 */
#export-md-btn {
    background: linear-gradient(145deg, #e8f7ff 0%, #d6f0ff 100%);
    border-color: rgba(0, 161, 214, 0.2);
}
#export-md-btn .btn-icon { background: linear-gradient(135deg, #00A1D6 0%, #0091C2 100%); }
#export-md-btn .btn-icon svg { color: white; stroke: white; }
#export-md-btn:hover { background: linear-gradient(145deg, #d6f0ff 0%, #c4e8ff 100%); border-color: #00A1D6; }
#export-md-btn:hover .btn-text { color: #00A1D6; }

/* 观看视频按钮 */
#goto-video-btn {
    background: linear-gradient(145deg, #fff3e6 0%, #ffe8d6 100%);
    border-color: rgba(255, 106, 0, 0.2);
}
#goto-video-btn .btn-icon { background: linear-gradient(135deg, #FF6A00 0%, #EE5A00 100%); }
#goto-video-btn .btn-icon svg { color: white; stroke: white; fill: white; }
#goto-video-btn:hover { background: linear-gradient(145deg, #ffe8d6 0%, #ffddc4 100%); border-color: #FF6A00; }
#goto-video-btn:hover .btn-text { color: #FF6A00; }

/* 下载封面按钮 */
#download-cover-btn {
    background: linear-gradient(145deg, #f0fff4 0%, #dcffe4 100%);
    border-color: rgba(16, 185, 129, 0.2);
}
#download-cover-btn .btn-icon { background: linear-gradient(135deg, #10B981 0%, #059669 100%); }
#download-cover-btn .btn-icon svg { color: white; stroke: white; }
#download-cover-btn:hover { background: linear-gradient(145deg, #dcffe4 0%, #c8ffd6 100%); border-color: #10B981; }
#download-cover-btn:hover .btn-text { color: #10B981; }

/* 下载头像按钮 */
#download-avatar-btn {
    background: linear-gradient(145deg, #f5f0ff 0%, #ebe0ff 100%);
    border-color: rgba(139, 92, 246, 0.2);
}
#download-avatar-btn .btn-icon { background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%); }
#download-avatar-btn .btn-icon svg { color: white; stroke: white; }
#download-avatar-btn:hover { background: linear-gradient(145deg, #ebe0ff 0%, #e0d0ff 100%); border-color: #8B5CF6; }
#download-avatar-btn:hover .btn-text { color: #8B5CF6; }

/* 新解析按钮 */
#new-search-btn {
    background: linear-gradient(145deg, #fefce8 0%, #fef9c3 100%);
    border-color: rgba(234, 179, 8, 0.2);
}
#new-search-btn .btn-icon { background: linear-gradient(135deg, #EAB308 0%, #CA8A04 100%); }
#new-search-btn .btn-icon svg { color: white; stroke: white; }
#new-search-btn:hover { background: linear-gradient(145deg, #fef9c3 0%, #fef08a 100%); border-color: #EAB308; }
#new-search-btn:hover .btn-text { color: #CA8A04; }

/* 兼容旧样式 */
.action-btn.primary, .action-btn.secondary {
    background: linear-gradient(145deg, #fafafa 0%, #f0f0f0 100%);
    color: var(--text-primary);
    border: 1px solid rgba(0,0,0,0.06);
}

/* 主要内容布局 */
.content-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* 卡片通用样式 */
.video-card,
.description-card,
.uploader-card,
.details-card {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-normal);
    margin-bottom: var(--spacing-lg);
}

.video-card:hover,
.description-card:hover,
.uploader-card:hover,
.details-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-content {
    padding: var(--spacing-lg);
}

/* 视频封面容器 */
.video-cover-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.video-cover {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-normal);
}

.video-cover.clickable-cover {
    cursor: pointer;
}

.video-cover.clickable-cover:hover {
    transform: scale(1.02);
    filter: brightness(1.1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}



.video-duration {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}



/* 视频标题 */
.video-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

/* B站风格视频统计 */
.video-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(85px, 1fr));
    gap: 12px;
}

.stat-item {
    text-align: center;
    padding: 12px 8px;
    background: linear-gradient(145deg, #fafafa 0%, #f5f5f5 100%);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0,0,0,0.04);
    cursor: default;
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

/* 不同统计项的颜色主题 */
.stat-item[data-type="view"]:hover { background: linear-gradient(145deg, #fff5f7 0%, #ffe8ed 100%); border-color: rgba(251, 114, 153, 0.3); }
.stat-item[data-type="view"] .stat-icon { color: #FB7299; }

.stat-item[data-type="like"]:hover { background: linear-gradient(145deg, #fff5f7 0%, #ffe8ed 100%); border-color: rgba(251, 114, 153, 0.3); }
.stat-item[data-type="like"] .stat-icon { color: #FB7299; }

.stat-item[data-type="coin"]:hover { background: linear-gradient(145deg, #fffbeb 0%, #fef3c7 100%); border-color: rgba(234, 179, 8, 0.3); }
.stat-item[data-type="coin"] .stat-icon { color: #EAB308; }

.stat-item[data-type="favorite"]:hover { background: linear-gradient(145deg, #fffbeb 0%, #fef3c7 100%); border-color: rgba(234, 179, 8, 0.3); }
.stat-item[data-type="favorite"] .stat-icon { color: #EAB308; }

.stat-item[data-type="danmaku"]:hover { background: linear-gradient(145deg, #e8f7ff 0%, #d6f0ff 100%); border-color: rgba(0, 161, 214, 0.3); }
.stat-item[data-type="danmaku"] .stat-icon { color: #00A1D6; }

.stat-item[data-type="reply"]:hover { background: linear-gradient(145deg, #e8f7ff 0%, #d6f0ff 100%); border-color: rgba(0, 161, 214, 0.3); }
.stat-item[data-type="reply"] .stat-icon { color: #00A1D6; }

.stat-item[data-type="share"]:hover { background: linear-gradient(145deg, #f0fff4 0%, #dcffe4 100%); border-color: rgba(16, 185, 129, 0.3); }
.stat-item[data-type="share"] .stat-icon { color: #10B981; }

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 6px;
    transition: all 0.3s ease;
}

.stat-icon svg {
    width: 22px;
    height: 22px;
}

.stat-item:hover .stat-icon {
    transform: scale(1.15);
}

.stat-label {
    font-size: 11px;
    color: #999;
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
}

.stat-value {
    font-size: 15px;
    font-weight: 600;
    color: #333;
}

/* 视频简介 */
.description-content {
    max-height: 200px;
    overflow-y: auto;
}

.video-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* 直播状态卡片 */
.live-card {
    background: linear-gradient(45deg, var(--danger-color), #ff6b6b);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.live-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(220, 53, 69, 0.3);
}

.live-link {
    display: block;
    padding: var(--spacing-md);
    color: white;
    text-decoration: none;
}

.live-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.live-dot {
    width: 8px;
    height: 8px;
    background-color: white;
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

.live-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-xs) 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.live-stats {
    font-size: 0.8rem;
    opacity: 0.9;
}

.live-online {
    font-weight: bold;
}

/* UP主信息 */
.uploader-content {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: var(--spacing-md);
}

/* 头像容器：第1行第1列 */
.uploader-avatar-container {
    position: relative;
    grid-row: 1;
    grid-column: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.uploader-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.uploader-avatar.clickable-avatar {
    cursor: pointer;
}

.uploader-avatar.clickable-avatar:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.3);
    filter: brightness(1.1);
}

/* UP主等级徽章 */
.uploader-level {
    position: absolute;
    bottom: -2px;
    right: -2px;
    background: linear-gradient(45deg, #ff6b6b, #ffa500);
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
    padding: 2px 5px;
    border-radius: 8px;
    border: 2px solid white;
    min-width: 18px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* UP主基本信息：第1行第2列 */
.uploader-basic {
    grid-row: 1;
    grid-column: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

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

.uploader-badges {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.uploader-mid {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.uploader-mid:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.uploader-vip {
    font-size: 0.75rem;
    background: linear-gradient(45deg, #ff6b9d, #c44569);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: bold;
}

.uploader-official {
    font-size: 0.75rem;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: bold;
}

.uploader-sex {
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.uploader-sex.male {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
}

.uploader-sex.female {
    background: linear-gradient(45deg, #f093fb, #f5576c);
    color: white;
}

/* 详细信息：第2行占满整行 */
.uploader-details {
    grid-row: 2;
    grid-column: 1 / -1;  /* 跨越所有列 */
    border-top: 1px solid var(--border-light);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.uploader-sign {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.5;
    padding: var(--spacing-sm) 0;
}

/* 统计信息横向排列，利用整个宽度 */
.uploader-stats {
    display: flex;
    justify-content: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.uploader-stats .stat-item {
    display: inline-flex;
    flex-direction: column-reverse;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    flex: 0 1 auto;
    min-width: 68px;
    padding: 0.5rem 0.6rem;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.uploader-stats .stat-item:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.uploader-stats .stat-icon {
    display: none; /* 隐藏图标，使其更简洁 */
}

.uploader-stats .stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    white-space: nowrap;
    line-height: 1.2;
}

.uploader-stats .stat-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    line-height: 1.2;
}

.uploader-extra {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.extra-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.extra-info::before {
    content: "📍";
    font-size: 0.875rem;
}

.extra-info:last-child::before {
    content: "📅";
}

/* 评论区域 */
.comments-card {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-normal);
    margin-bottom: var(--spacing-lg);
}

.comments-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.comments-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl) 0;
}

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

.control-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.comment-limit-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.9rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.comment-limit-select:hover {
    border-color: var(--primary-color);
}

.comment-limit-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 161, 214, 0.1);
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    .comments-card .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .comment-controls {
        width: 100%;
        justify-content: flex-end;
    }
}

.comment-count {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 400;
    margin-left: var(--spacing-xs);
}

/* 查看全部评论按钮 */
.view-all-comments-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-left: auto;
    white-space: nowrap;
}

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

.view-all-comments-btn svg {
    transition: transform var(--transition-fast);
}

.view-all-comments-btn:hover svg {
    transform: translateX(3px);
}

@media (max-width: 768px) {
    .view-all-comments-btn {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
}

.comments-container {
    min-height: 100px;
}

.comments-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
}

.loading-spinner-small {
    width: 30px;
    height: 30px;
    border: 3px solid var(--border-light);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.comment-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-fast);
}

.comment-item:last-child {
    border-bottom: none;
}

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

.comment-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.user-avatar-link {
    cursor: pointer;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.user-avatar-link:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

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

.comment-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.comment-username {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.comment-floor,
.reply-floor {
    font-size: 0.7rem;
    background: linear-gradient(45deg, #00b4d8, #0077b6);
    color: white;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: bold;
    margin-right: 4px;
}

.reply-floor {
    font-size: 0.65rem;
    padding: 1px 4px;
}

.comment-level {
    font-size: 0.7rem;
    background: linear-gradient(45deg, #ff6b6b, #ffa500);
    color: white;
    padding: 1px 4px;
    border-radius: 4px;
    font-weight: bold;
}

.comment-vip {
    font-size: 0.65rem;
    background: linear-gradient(45deg, #ff6b9d, #c44569);
    color: white;
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: bold;
}

.comment-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.comment-content {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    word-wrap: break-word;
}

.comment-emote {
    display: inline-block;
    height: 24px;
    width: auto;
    vertical-align: middle;
    margin: 0 2px;
}

.comment-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

.comment-action {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: default;
    transition: var(--transition-fast);
}

.comment-action.comment-like {
    color: var(--danger-color);
}

.comment-action-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* 评论图片 */
.comment-pictures {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.comment-picture {
    max-width: 200px;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.comment-picture:hover {
    transform: scale(1.05);
}

.comment-picture img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* 图片预览覆盖层 */
.image-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    cursor: pointer;
}

.image-preview-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.image-preview-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.image-preview-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.image-preview-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 回复区域 */
.comment-replies {
    margin-top: var(--spacing-md);
    margin-left: calc(40px + var(--spacing-md));
}

.replies-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    margin-bottom: var(--spacing-sm);
}

.replies-toggle:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.replies-toggle-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.replies-arrow {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.replies-toggle.expanded .replies-arrow {
    transform: rotate(90deg);
}

.replies-list {
    display: none;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-color);
}

.replies-list.show {
    display: flex;
}

.reply-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--surface-color);
    border-radius: var(--radius-sm);
}

.reply-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    cursor: pointer;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.reply-avatar:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

.reply-content-wrapper {
    flex: 1;
    min-width: 0;
}

.reply-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.reply-username {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.reply-target {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.reply-text {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-primary);
    word-wrap: break-word;
}

.reply-text .comment-emote {
    height: 20px;
}

.reply-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.reply-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.reply-like {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--danger-color);
}

.reply-like .like-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.reply-like .like-count {
    color: var(--text-muted);
}

.comments-empty {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-muted);
}

.comments-empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.comments-error {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--danger-color);
}

.comments-more-hint {
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    border: 1px dashed var(--border-color);
}

.comments-more-hint p {
    margin: 0;
}

/* 详细信息 */
.details-grid {
    display: grid;
    gap: var(--spacing-md);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

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

.detail-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
    word-break: break-all;
}

/* 视频标签区域 */
.video-tags-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
}

.tags-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.tags-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.tags-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tags-toggle-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tags-toggle-btn .toggle-icon {
    transition: transform var(--transition-fast);
}

.tags-toggle-btn.expanded .toggle-icon {
    transform: rotate(180deg);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.video-tag {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, rgba(251, 114, 153, 0.1), rgba(255, 157, 176, 0.1));
    border: 1px solid rgba(251, 114, 153, 0.3);
    border-radius: 20px;
    color: #fb7299;
    font-size: var(--font-size-xs);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.video-tag:hover {
    background: linear-gradient(135deg, #fb7299, #ff9db0);
    border-color: #fb7299;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(251, 114, 153, 0.3);
}

/* 隐藏的标签（折叠状态） */
.video-tag.hidden-tag {
    display: none;
}

.video-tag.hidden-tag.visible {
    display: inline-block;
}

/* 页脚 */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-light);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.footer-text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* 通知系统 */
.notification-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
    max-width: 400px;
}

.notification {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideInRight 0.3s ease-out;
}

.notification.success {
    border-color: var(--accent-color);
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
}

.notification.error {
    border-color: var(--danger-color);
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
}

.notification.warning {
    border-color: var(--warning-color);
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
}

.notification.info {
    border-color: var(--info-color);
    background: linear-gradient(135deg, #d1ecf1, #bee5eb);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .content-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .actions-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .action-btn {
        min-height: 60px;
        padding: 10px 6px;
    }

    .action-btn .btn-icon {
        width: 24px;
        height: 24px;
    }

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

    .action-btn .btn-text {
        font-size: 11px;
    }

    .video-stats {
        grid-template-columns: repeat(4, 1fr);
    }

    .stat-item {
        padding: 10px 6px;
    }

    .stat-icon svg {
        width: 18px;
        height: 18px;
    }

    .stat-label {
        font-size: 10px;
    }

    .stat-value {
        font-size: 13px;
    }

    .uploader-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        text-align: center;
        gap: var(--spacing-md);
    }

    .uploader-avatar-container {
        grid-row: 1;
        grid-column: 1;
        justify-self: center;
    }

    .uploader-basic {
        grid-row: 2;
        grid-column: 1;
        align-items: center;
    }

    .uploader-badges {
        justify-content: center;
    }

    .uploader-details {
        grid-row: 3;
        grid-column: 1;
    }

    .uploader-stats {
        justify-content: center;
    }

    .main-content {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .video-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .input-group {
        flex-direction: column;
    }

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


/* Download Progress Section */
.progress-section {
    margin-bottom: 2rem;
}

.progress-container {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.progress-title {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
}

.progress-bar-container {
    width: 100%;
    height: 10px;
    background-color: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar {
    width: 0;
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 0.2s ease-in-out;
}

.progress-details {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==================== 设置按钮样式 ==================== */
.settings-btn {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.625rem 0.75rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.settings-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.settings-icon {
    font-size: 1.25rem;
    transition: transform var(--transition-normal);
}

.settings-btn:hover .settings-icon {
    transform: rotate(30deg);
}

/* ==================== 模态框样式 ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-normal);
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn var(--transition-normal);
}

.modal-content {
    position: relative;
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    animation: slideUp 0.4s ease-out;
    z-index: 1;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    border-bottom: 2px solid var(--border-light);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: white;
    margin: 0;
}

.modal-icon {
    font-size: 1.5rem;
}

.modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 2rem;
    line-height: 1;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-body {
    padding: 2rem;
}

.modal-footer {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2rem;
    border-top: 2px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ==================== 设置内容样式 ==================== */
.settings-info {
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
    border-left: 4px solid var(--info-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.info-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--info-color);
    margin-bottom: 0.75rem;
}

.badge-icon {
    font-size: 1rem;
}

.info-text {
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

.settings-status {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.status-label {
    font-weight: 600;
    color: var(--text-primary);
}

.status-badge {
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.status-not-configured {
    background: #fff3cd;
    color: #856404;
}

.status-configured {
    background: #d4edda;
    color: #155724;
}

.settings-form {
    margin-bottom: 1.5rem;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.label-required {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: var(--font-size-sm);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input {
    flex: 1;
    padding: 0.75rem 3rem 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-family: 'Courier New', monospace;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.input-toggle {
    position: absolute;
    right: 0.5rem;
    background: transparent;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.input-toggle:hover {
    background: var(--bg-secondary);
}

.toggle-icon {
    font-size: 1.25rem;
}

.form-hint {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.form-hint code {
    background: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    color: var(--text-primary);
}

/* ==================== 教程样式 ==================== */
.settings-tutorial {
    background: var(--surface-color);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.tutorial-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-light);
}

.tutorial-icon {
    font-size: 1.5rem;
}

.tutorial-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-steps {
    list-style: none;
    counter-reset: step-counter;
    margin: 0;
    padding: 0;
}

.tutorial-steps li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 3rem;
    margin-bottom: 1.5rem;
}

.tutorial-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.tutorial-steps li strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: var(--font-size-md);
}

.tutorial-steps li p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.tutorial-steps li a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.tutorial-steps li a:hover {
    text-decoration: underline;
}

.tutorial-steps kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    box-shadow: 0 2px 0 var(--border-color);
}

.tutorial-steps code {
    background: #f8f9fa;
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    color: #d63384;
    font-size: 0.875rem;
}

.tutorial-warning {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background: #fff3cd;
    border-left: 4px solid var(--warning-color);
    border-radius: var(--radius-md);
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-content {
    flex: 1;
}

.warning-content strong {
    display: block;
    color: #856404;
    margin-bottom: 0.5rem;
}

.warning-content ul {
    margin: 0;
    padding-left: 1.25rem;
    color: #856404;
}

.warning-content li {
    margin-bottom: 0.25rem;
}

/* ==================== 按钮样式 ==================== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-icon {
    font-size: 1rem;
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .settings-btn {
        top: 1rem;
        right: 1rem;
        padding: 0.5rem;
    }

    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1.25rem;
    }

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

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer button {
        width: 100%;
    }

    .tutorial-steps li {
        padding-left: 2.5rem;
    }

    .tutorial-steps li::before {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.75rem;
    }
}

/* ==================== 回到顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.back-to-top:active {
    transform: translateY(0);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top .arrow-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.back-to-top:hover .arrow-icon {
    transform: translateY(-2px);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
        font-size: 1.25rem;
    }
}

/* ==================== @用户链接样式 ==================== */
.at-user-link {
    color: #00a1d6;
    cursor: pointer;
    font-weight: 500;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    padding: 0 2px;
    border-radius: 3px;
    text-decoration: none;
}

.at-user-link:hover {
    color: #00b5e5;
    background-color: rgba(0, 161, 214, 0.1);
    text-decoration: underline;
}

/* ==================== 用户信息悬浮卡片样式 ==================== */
.user-info-card {
    position: absolute;
    z-index: 10001;
    width: 280px;
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    display: none;
    overflow: hidden;
    animation: fadeInUp 0.2s ease-out;
}

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

/* 加载状态 */
.user-card-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* 错误状态 */
.user-card-error {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--danger-color);
    font-size: var(--font-size-sm);
}

/* 卡片内容 */
.user-card-content {
    padding: 1rem;
}

/* 卡片头部 */
.user-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.user-card-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-light);
    flex-shrink: 0;
}

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

.user-card-name {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 0.25rem;
}

.user-card-level {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: 10px;
    color: white;
    background: linear-gradient(135deg, #a0a0a0, #888);
}

.user-card-level.level-0 { background: linear-gradient(135deg, #bbb, #999); }
.user-card-level.level-1 { background: linear-gradient(135deg, #bbb, #999); }
.user-card-level.level-2 { background: linear-gradient(135deg, #8ac63c, #6ba52a); }
.user-card-level.level-3 { background: linear-gradient(135deg, #6bb5e3, #4a9cd0); }
.user-card-level.level-4 { background: linear-gradient(135deg, #f59542, #e07a2a); }
.user-card-level.level-5 { background: linear-gradient(135deg, #e15f5f, #c94444); }
.user-card-level.level-6 { background: linear-gradient(135deg, #fb7299, #e85685); }

/* 签名 */
.user-card-sign {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 统计数据 */
.user-card-stats {
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 0.75rem;
}

.user-card-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.125rem;
}

.user-card-stat .stat-value {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
}

.user-card-stat .stat-label {
    font-size: 11px;
    color: var(--text-muted);
}

/* 卡片底部 */
.user-card-footer {
    display: flex;
    justify-content: center;
}

.user-card-btn {
    width: 100%;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #00a1d6, #0088bf);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-card-btn:hover {
    background: linear-gradient(135deg, #00b5e5, #009dd4);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 161, 214, 0.3);
}

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

/* 移动端适配 */
@media (max-width: 768px) {
    .user-info-card {
        width: 260px;
    }

    .user-card-avatar {
        width: 42px;
        height: 42px;
    }

    .user-card-name {
        font-size: var(--font-size-sm);
    }
}