/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量 - shadcn/ui 风格调色板 */
:root {
    /* 中性色调 */
    --background: #ffffff;
    --foreground: #0f172a;
    --card: #ffffff;
    --card-foreground: #0f172a;
    --popover: #ffffff;
    --popover-foreground: #0f172a;
    
    /* 边框和分割线 */
    --border: #e2e8f0;
    --input: #e2e8f0;
    
    /* 主要色调 - 使用灰色系替代蓝色 */
    --primary: #1e293b;
    --primary-foreground: #f8fafc;
    
    /* 次要色调 */
    --secondary: #f1f5f9;
    --secondary-foreground: #0f172a;
    
    /* 静音色调 */
    --muted: #f8fafc;
    --muted-foreground: #64748b;
    
    /* 强调色调 */
    --accent: #f1f5f9;
    --accent-foreground: #0f172a;
    
    /* 破坏性操作 */
    --destructive: #ef4444;
    --destructive-foreground: #f8fafc;
    
    /* 圆角 */
    --radius: 0.25rem;
    
    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* 脚手架专用色彩变量 */
    --scaffold-bg: #f8fafc;
    --scaffold-surface: #ffffff;
    --scaffold-border: #e2e8f0;
    --scaffold-muted: #f1f5f9;
    --scaffold-accent: #475569;
    --scaffold-text: #334155;
    --scaffold-text-muted: #64748b;
    --scaffold-shadow: rgba(15, 23, 42, 0.04);
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #020617;
        --foreground: #f8fafc;
        --card: #020617;
        --card-foreground: #f8fafc;
        --popover: #020617;
        --popover-foreground: #f8fafc;
        --border: #1e293b;
        --input: #1e293b;
        --primary: #f8fafc;
        --primary-foreground: #0f172a;
        --secondary: #1e293b;
        --secondary-foreground: #f8fafc;
        --muted: #1e293b;
        --muted-foreground: #94a3b8;
        --accent: #1e293b;
        --accent-foreground: #f8fafc;
        
        /* 深色模式脚手架专用色彩 */
        --scaffold-bg: #0f172a;
        --scaffold-surface: #1e293b;
        --scaffold-border: #334155;
        --scaffold-muted: #1e293b;
        --scaffold-accent: #64748b;
        --scaffold-text: #e2e8f0;
        --scaffold-text-muted: #94a3b8;
        --scaffold-shadow: rgba(0, 0, 0, 0.2);
    }
}

/* 基础样式 */
body {
    font-family: var(--font-sans);
    background-color: var(--scaffold-bg);
    color: var(--scaffold-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 主容器 */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* 侧边栏 */
.sidebar {
    width: 280px;
    background-color: var(--scaffold-surface);
    border-right: 1px solid var(--scaffold-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    box-shadow: 2px 0 8px var(--scaffold-shadow);
}

.sidebar-header {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--scaffold-border);
    background-color: var(--scaffold-accent);
    background: linear-gradient(135deg, var(--scaffold-accent) 0%, #7e7e7e 100%);
}

.sidebar-header h1 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.slide-count {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

/* 缩略图容器 */
.thumbnails-container {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background-color: #eeeeee;
}

/* 缩略图项 */
.thumbnail-item {
    background-color: var(--scaffold-surface);
    border: 1px solid var(--scaffold-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    overflow: hidden;
    position: relative;
    /* 确保缩略图保持16:9比例，不被压缩 */
    flex-shrink: 0;
    box-shadow: 0 1px 3px var(--scaffold-shadow);
}

.thumbnail-item:hover {
    border-color: var(--scaffold-accent);
    box-shadow: 0 2px 8px rgba(71, 85, 105, 0.15);
    transform: translateY(-1px);
}

.thumbnail-item.active {
    border-color: var(--scaffold-accent);
    box-shadow: 0 0 0 2px rgba(71, 85, 105, 0.2);
    background-color: #f8fafc;
}

.thumbnail-preview {
    width: 100%;
    aspect-ratio: 16/9;
    border: none;
    border-radius: var(--radius);
    pointer-events: none;
    transform: scale(0.95);
    transform-origin: center;
    /* 确保iframe不被压缩 */
    min-height: 120px;
}

.thumbnail-title {
    padding: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--scaffold-text);
    border-top: 1px solid var(--scaffold-border);
    background-color: var(--scaffold-surface);
}

/* 主内容区 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--scaffold-bg);
}

/* 幻灯片容器 */
.slide-container {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden; /* 确保不出现滚动条 */
    background-color: #E6E9EA;
}

.slide-iframe {
    /* 设置为标准16:9比例的虚拟尺寸 */
    width: 1600px;
    height: 900px;
    /* 初始缩放，会被JavaScript动态调整 */
    transform-origin: center center;
    border: 2px solid var(--scaffold-border);
    border-radius: 8px;
    background-color: var(--scaffold-surface);
    /* 确保iframe内容不会溢出 */
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(71, 85, 105, 0.1);
}

/* 导航控制 */
.navigation {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--scaffold-border);
    background-color: var(--scaffold-surface);
    background: linear-gradient(to right, var(--scaffold-surface) 0%, var(--scaffold-muted) 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 -2px 8px var(--scaffold-shadow);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--scaffold-accent);
    color: #ffffff;
    border: 1px solid var(--scaffold-accent);
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 1px 3px var(--scaffold-shadow);
}

.nav-btn:hover:not(:disabled) {
    background-color: #52525b;
    border-color: #52525b;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(71, 85, 105, 0.2);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-indicator {
    font-size: 0.875rem;
    color: var(--scaffold-text);
    font-weight: 600;
    background-color: var(--scaffold-muted);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    border: 1px solid var(--scaffold-border);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    
    .thumbnails-container {
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 0.75rem;
    }
    
    .thumbnail-item {
        min-width: 160px;
        flex-shrink: 0;
    }
    
    .slide-container {
        padding: 1rem;
    }
    
    .slide-iframe {
        /* 移动端保持相同的虚拟尺寸，通过JavaScript缩放 */
        width: 1600px;
        height: 900px;
    }
    
    .navigation {
        padding: 0.75rem 1rem;
    }
}

/* 滚动条样式 */
.thumbnails-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.thumbnails-container::-webkit-scrollbar-track {
    background: var(--muted);
}

.thumbnails-container::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.thumbnails-container::-webkit-scrollbar-thumb:hover {
    background: var(--muted-foreground);
}

/* 加载状态 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted-foreground);
    font-size: 0.875rem;
}

/* 错误状态 */
.error {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--destructive);
    font-size: 0.875rem;
    padding: 2rem;
    text-align: center;
}

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

.thumbnail-item {
    animation: fadeIn 0.3s ease-out;
}

/* 打印样式 */
@media print {
    .sidebar,
    .navigation {
        display: none;
    }
    
    .main-content {
        width: 100%;
    }
    
    .slide-iframe {
        width: 100%;
        height: 100vh;
        max-width: none;
        max-height: none;
        border: none;
    }
}

/* ========== 幻灯片页面通用样式 ========== */

/* 幻灯片基础样式 - 在每个幻灯片页面的 body 上应用 */
.slide-page {
    font-family: var(--font-sans);
    background-color: var(--background);
    color: var(--foreground);
    padding: 2rem;
    height: 100vh;
    overflow: hidden;
    margin: 0;
    /* 确保在iframe内正确显示 */
    box-sizing: border-box;
    min-height: 100vh;
}

/* 幻灯片容器 */
.slide {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* 幻灯片头部 */
.slide-header {
    text-align: center;
    margin-bottom: 2rem;
}

.slide-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.slide-subtitle {
    font-size: 1.125rem;
    color: var(--muted-foreground);
    font-weight: 400;
}

/* 幻灯片内容区 */
.slide-content {
    flex: 1;
    display: grid;
    gap: 2rem;
    align-items: start;
}

/* 内容区域 */
.content-section {
    background-color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

/* 指标网格 */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.metric-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* 图表容器 */
.chart-container {
    width: 100%;
    height: 300px;
}

.chart-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    text-align: center;
}

/* 洞察网格 */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.insight-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.insight-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.insight-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.insight-description {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    line-height: 1.5;
}

/* 幻灯片页脚 */
.slide-footer {
    text-align: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.slide-number {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* 幻灯片布局变体 */
.slide-content.two-column {
    grid-template-columns: 1fr 1fr;
}

.slide-content.three-column {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
}

.slide-content.two-row {
    grid-template-rows: 1fr 1fr;
    gap: 1.5rem;
}

.slide-content.full-width {
    grid-template-columns: 1fr;
}

/* 图表行布局 */
.chart-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.chart-section {
    background-color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.chart-section .chart-container {
    flex: 1;
    min-height: 200px;
}

/* 全宽内容区 */
.insights-section {
    grid-column: 1 / -1;
    background-color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
}

.insights-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 幻灯片响应式设计 */
@media (max-width: 768px) {
    .slide-page {
        padding: 1rem;
    }
    
    .slide-content,
    .slide-content.two-column,
    .slide-content.three-column,
    .chart-row {
        grid-template-columns: 1fr !important;
        gap: 1rem;
    }
    
    .slide-title {
        font-size: 2rem;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .insights-grid {
        grid-template-columns: 1fr;
    }
}

/* 中等屏幕响应式 */
@media (max-width: 1200px) and (min-width: 769px) {
    .slide-page {
        padding: 1.5rem;
    }
    
    .slide-title {
        font-size: 2.25rem;
    }
    
    .slide-content.three-column {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .chart-container {
        height: 250px;
    }
}

/* 超大屏幕优化 */
@media (min-width: 1400px) {
    .slide-page {
        padding: 2.5rem;
    }
    
    .chart-container {
        height: 350px;
    }
}