/* ========================================
   生猪价格分析报告 - 公共样式表
   专业研究报告深色主题
   ======================================== */

/* CSS 变量定义 */
:root {
  /* 主色调 */
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --bg-hover: #1e2a4a;
  
  /* 强调色 */
  --accent-primary: #0f3460;
  --accent-highlight: #e94560;
  --accent-data: #00d2ff;
  
  /* 文字颜色 */
  --text-primary: #ffffff;
  --text-secondary: #b8c5d6;
  --text-muted: #7a8ba3;
  --text-accent: #e94560;
  
  /* 边框 */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-highlight: rgba(233, 69, 96, 0.5);
  
  /* 字体 */
  --font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-mono: "SF Mono", "Fira Code", Consolas, monospace;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(233, 69, 96, 0.3);
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 选择文本样式 */
::selection {
  background: rgba(233, 69, 96, 0.4);
  color: var(--text-primary);
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  transition: var(--transition-normal);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand::before {
  content: "📊";
  font-size: 1.3rem;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--accent-highlight);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent-highlight);
  border-radius: 1px;
}

/* ========================================
   主容器
   ======================================== */
.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(64px + var(--spacing-xl)) var(--spacing-lg) var(--spacing-xl);
}

/* ========================================
   报告头部
   ======================================== */
.report-header {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  position: relative;
}

.report-header::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.report-title {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-data) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.report-subtitle {
  font-size: 1.4rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-weight: 400;
}

.report-date {
  font-size: 1rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.report-date::before {
  content: "📅";
}

/* ========================================
   章节标题
   ======================================== */
.section-title {
  font-size: 1.8rem;
  font-weight: 600;
  margin: var(--spacing-xxl) 0 var(--spacing-lg);
  padding-left: var(--spacing-md);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: linear-gradient(180deg, var(--accent-highlight) 0%, var(--accent-data) 100%);
  border-radius: 2px;
}

.section-title .icon {
  font-size: 1.5rem;
}

/* ========================================
   卡片/面板
   ======================================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-highlight);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  color: var(--text-secondary);
}

/* ========================================
   数据卡片网格
   ======================================== */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.data-card {
  background: linear-gradient(145deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: var(--transition-normal);
}

.data-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle at top right, rgba(0, 210, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.data-card:hover {
  border-color: rgba(0, 210, 255, 0.3);
  transform: translateY(-2px);
}

.data-card.highlight {
  border-left: 3px solid var(--accent-highlight);
}

.data-card.highlight::after {
  background: radial-gradient(circle at top right, rgba(233, 69, 96, 0.1) 0%, transparent 70%);
}

.data-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-data);
  line-height: 1.2;
}

.data-value.negative {
  color: var(--accent-highlight);
}

.data-value.positive {
  color: #00d9a3;
}

.data-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* ========================================
   目录卡片网格
   ======================================== */
.toc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.toc-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.toc-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent-highlight) 0%, var(--accent-data) 100%);
  transform: scaleY(0);
  transition: var(--transition-normal);
}

.toc-card:hover {
  background: var(--bg-hover);
  border-color: var(--border-highlight);
  transform: translateX(8px);
}

.toc-card:hover::before {
  transform: scaleY(1);
}

.toc-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-highlight);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.toc-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.toc-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ========================================
   关键发现摘要框
   ======================================== */
.highlight-box {
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.1) 0%, rgba(15, 52, 96, 0.2) 100%);
  border-left: 4px solid var(--accent-highlight);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.highlight-box-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-highlight);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.highlight-box-content {
  color: var(--text-secondary);
  line-height: 1.8;
}

.highlight-box-content ul {
  list-style: none;
  padding: 0;
}

.highlight-box-content li {
  padding-left: var(--spacing-md);
  position: relative;
  margin-bottom: var(--spacing-xs);
}

.highlight-box-content li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent-highlight);
}

/* ========================================
   数据高亮标签
   ======================================== */
.data-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  gap: 4px;
}

.data-tag.primary {
  background: rgba(0, 210, 255, 0.15);
  color: var(--accent-data);
  border: 1px solid rgba(0, 210, 255, 0.3);
}

.data-tag.danger {
  background: rgba(233, 69, 96, 0.15);
  color: var(--accent-highlight);
  border: 1px solid rgba(233, 69, 96, 0.3);
}

.data-tag.success {
  background: rgba(0, 217, 163, 0.15);
  color: #00d9a3;
  border: 1px solid rgba(0, 217, 163, 0.3);
}

.data-tag.warning {
  background: rgba(255, 193, 7, 0.15);
  color: #ffc107;
  border: 1px solid rgba(255, 193, 7, 0.3);
}

/* ========================================
   表格样式
   ======================================== */
.table-container {
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table thead {
  background: var(--bg-secondary);
}

.data-table th {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.data-table th.numeric {
  text-align: right;
}

.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.data-table td.numeric {
  text-align: right;
  font-family: var(--font-mono);
}

.data-table tbody tr {
  transition: var(--transition-fast);
}

.data-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.data-table tbody tr:hover {
  background: var(--bg-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ========================================
   上一章/下一章导航
   ======================================== */
.chapter-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.chapter-nav-btn {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: var(--transition-normal);
  min-width: 200px;
}

.chapter-nav-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-highlight);
}

.chapter-nav-btn.prev {
  align-items: flex-start;
}

.chapter-nav-btn.next {
  align-items: flex-end;
  text-align: right;
}

.chapter-nav-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.chapter-nav-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.chapter-nav-btn:hover .chapter-nav-title {
  color: var(--accent-data);
}

/* ========================================
   页脚
   ======================================== */
.footer {
  margin-top: var(--spacing-xxl);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.footer-sources {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer-divider {
  margin: var(--spacing-md) 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .report-title {
    font-size: 2.2rem;
  }
  
  .toc-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .main-container {
    padding: calc(64px + var(--spacing-lg)) var(--spacing-md) var(--spacing-lg);
  }
  
  .report-title {
    font-size: 1.8rem;
  }
  
  .report-subtitle {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 1.4rem;
  }
  
  .data-grid {
    grid-template-columns: 1fr;
  }
  
  .navbar {
    padding: 0 var(--spacing-md);
  }
  
  .navbar-nav {
    display: none;
  }
  
  .chapter-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .chapter-nav-btn {
    width: 100%;
    align-items: center;
    text-align: center;
  }
  
  .chapter-nav-btn.prev,
  .chapter-nav-btn.next {
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .report-title {
    font-size: 1.5rem;
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .data-value {
    font-size: 1.6rem;
  }
}

/* ========================================
   打印适配
   ======================================== */
@media print {
  :root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-card: #ffffff;
    --text-primary: #000000;
    --text-secondary: #333333;
    --text-muted: #666666;
  }
  
  body {
    background: #ffffff;
    color: #000000;
    font-size: 12pt;
    line-height: 1.5;
  }
  
  .navbar {
    display: none;
  }
  
  .main-container {
    padding: var(--spacing-lg);
    max-width: 100%;
  }
  
  .report-header::before {
    display: none;
  }
  
  .report-title {
    background: none;
    -webkit-text-fill-color: #000000;
    color: #000000;
    font-size: 24pt;
  }
  
  .card,
  .data-card,
  .toc-card {
    border: 1px solid #cccccc;
    box-shadow: none;
    break-inside: avoid;
  }
  
  .toc-card:hover,
  .card:hover,
  .data-card:hover {
    transform: none;
  }
  
  .highlight-box {
    border: 1px solid #cccccc;
    border-left: 4px solid #666666;
    background: #f5f5f5;
  }
  
  .chapter-nav {
    display: none;
  }
  
  .footer {
    border-top: 1px solid #cccccc;
    margin-top: var(--spacing-lg);
  }
  
  .data-table {
    font-size: 10pt;
  }
  
  .data-table th,
  .data-table td {
    padding: 8px;
    border: 1px solid #cccccc;
  }
  
  a {
    text-decoration: none;
    color: #000000;
  }
  
  .data-tag {
    border: 1px solid #cccccc;
    background: #f5f5f5;
    color: #000000;
  }
  
  .section-title::before {
    background: #666666;
  }
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

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

/* 延迟动画类 */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }