/* ============================================
   动漫数据可视化平台 - 主样式表
   配色方案：深蓝数据仪表盘风格
   ============================================ */

/* CSS 变量定义 */
:root {
  --color-primary: #2962FF;
  --color-secondary: #00E676;
  --color-bg: #0A192F;
  --color-card: #112240;
  --color-text: #CCD6F6;
  --color-text-muted: #8892B0;
  --color-border: #1D3461;
  --color-accent-gold: #FFD700;
  --color-danger: #FF5252;
  --color-success: #00E676;
  --color-warning: #FFC107;
  --font-heading: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(41, 98, 255, 0.08);
  --shadow-glow: 0 0 20px rgba(41, 98, 255, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1400px;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-secondary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 */
.nav-dashboard {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 25, 47, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
}

.nav-dashboard .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.nav-brand .brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-secondary);
  border-bottom-color: var(--color-secondary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* 首屏大屏 */
.hero-dashboard {
  margin-top: 64px;
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 60px 20px;
}

.hero-dashboard::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 25, 47, 0.9), rgba(17, 34, 64, 0.7));
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stats-row {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero-stat-item {
  text-align: center;
}

.hero-stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-secondary);
  display: block;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* 数据卡片 */
.data-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.data-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: var(--transition);
}

.data-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-primary);
}

.data-card:hover::before {
  opacity: 1;
}

.data-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.data-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

.data-card-badge {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(41, 98, 255, 0.15);
  color: var(--color-primary);
  font-weight: 600;
}

/* 排行榜组件 */
.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.ranking-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}

.ranking-position {
  font-size: 1.4rem;
  font-weight: 800;
  font-family: var(--font-mono);
  min-width: 36px;
  text-align: center;
}

.ranking-position.top-1 { color: var(--color-accent-gold); }
.ranking-position.top-2 { color: #C0C0C0; }
.ranking-position.top-3 { color: #CD7F32; }

.ranking-info {
  flex: 1;
}

.ranking-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.ranking-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.ranking-trend {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.ranking-trend.up { color: var(--color-success); }
.ranking-trend.down { color: var(--color-danger); }
.ranking-trend.stable { color: var(--color-text-muted); }

.sparkline {
  width: 60px;
  height: 24px;
}

/* 网格布局 */
.grid-dashboard {
  display: grid;
  gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 章节标题 */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
}

.section-more {
  font-size: 0.85rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.section-more:hover {
  color: var(--color-secondary);
}

/* 内容区块 */
.content-section {
  padding: 60px 0;
}

.content-section:nth-child(even) {
  background: rgba(17, 34, 64, 0.3);
}

/* 筛选面板 */
.filter-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 30px;
}

.filter-btn {
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* 图表容器 */
.chart-container {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.chart-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.chart-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 雷达图容器 */
.radar-chart-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* 数据大屏 */
.data-screen {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 30px 0;
}

.data-screen-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.data-screen-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.data-screen-value {
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-secondary);
  margin-bottom: 6px;
}

.data-screen-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* 词云区域 */
.wordcloud-section {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.wordcloud-section img {
  width: 100%;
  border-radius: var(--radius-md);
}

/* 报告摘要卡片 */
.report-card {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  margin-bottom: 16px;
}

.report-card:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.report-card-thumb {
  width: 160px;
  min-width: 160px;
  height: 100px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.report-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.report-card-body {
  flex: 1;
}

.report-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.report-card-excerpt {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.report-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* 页脚 */
.footer-dashboard {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 30px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding: 4px 0;
}

.footer-links a:hover {
  color: var(--color-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* FAQ */
.faq-section {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-card);
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(41, 98, 255, 0.05);
}

.faq-question::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--color-primary);
  transition: var(--transition);
}

.faq-item.active .faq-question::after {
  content: '−';
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  padding: 0 24px 18px;
  max-height: 500px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-sep {
  color: var(--color-border);
}

/* 页面头部 */
.page-header {
  margin-top: 64px;
  padding: 60px 0 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(41, 98, 255, 0.08), transparent 70%);
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.page-header .page-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* 搜索框 */
.search-box {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 30px;
  overflow: hidden;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.search-box input {
  flex: 1;
  padding: 14px 24px;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 0.95rem;
  outline: none;
  font-family: var(--font-body);
}

.search-box input::placeholder {
  color: var(--color-text-muted);
}

.search-box button {
  padding: 14px 28px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
}

.search-box button:hover {
  background: #1e50d4;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: #1e50d4;
  box-shadow: 0 4px 16px rgba(41, 98, 255, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* 对比工具 */
.compare-panel {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: start;
}

.compare-vs {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  padding-top: 60px;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(41, 98, 255, 0.1);
  color: var(--color-primary);
  margin: 2px 4px;
}

.tag-green {
  background: rgba(0, 230, 118, 0.1);
  color: var(--color-secondary);
}

/* 内容文章 */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 2;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
  color: var(--color-text);
}

.article-content h3 {
  font-size: 1.2rem;
  margin: 30px 0 12px;
  color: var(--color-text);
}

.article-content p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 24px 0;
}

/* 数字滚动动画 */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-count {
  animation: countUp 0.6s ease forwards;
}

/* 图表绘制动画 */
@keyframes drawLine {
  from { stroke-dashoffset: 1000; }
  to { stroke-dashoffset: 0; }
}

/* 排名变化动画 */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.ranking-item {
  animation: slideUp 0.4s ease forwards;
  animation-delay: calc(var(--index, 0) * 0.08s);
}

/* 脉冲动画 */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  animation: pulse 2s infinite;
  display: inline-block;
}

/* 404 页面 */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.error-code {
  font-size: 8rem;
  font-weight: 900;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* APP下载页 */
.app-hero {
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 80px 0;
}

.app-mockup {
  flex: 1;
  max-width: 400px;
}

.app-info {
  flex: 1;
}

.app-badges {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

/* 响应式 */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .data-screen { grid-template-columns: repeat(2, 1fr); }
  .compare-panel { grid-template-columns: 1fr; }
  .compare-vs { padding-top: 0; }
}

@media (max-width: 768px) {
  html { font-size: 14px; }
  
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 25, 47, 0.98);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }
  
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav-toggle { display: flex; }
  
  .hero-content h1 { font-size: 2rem; }
  .hero-stats-row { gap: 20px; }
  .hero-stat-number { font-size: 1.8rem; }
  
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .data-screen { grid-template-columns: 1fr 1fr; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
  
  .report-card { flex-direction: column; }
  .report-card-thumb { width: 100%; min-width: unset; height: 160px; }
  
  .app-hero { flex-direction: column; text-align: center; }
  .app-badges { justify-content: center; }
  
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
}

@media (max-width: 480px) {
  .hero-dashboard { min-height: 50vh; padding: 40px 16px; }
  .hero-content h1 { font-size: 1.6rem; }
  .data-screen { grid-template-columns: 1fr; }
  .filter-panel { gap: 8px; }
  .filter-btn { padding: 6px 14px; font-size: 0.8rem; }
}

/* 打印样式 */
@media print {
  .nav-dashboard, .footer-dashboard { display: none; }
  body { background: #fff; color: #333; }
  .data-card { border: 1px solid #ddd; box-shadow: none; }
}