/* ========================================
   吃瓜网 - 影视数据大盘分析平台
   独有配色方案：深空科技蓝 + 数据仪表盘风
   ======================================== */

:root {
  --primary: #00B4D8;
  --primary-dark: #0096B7;
  --danger: #FF5252;
  --success: #4CAF50;
  --bg-deep: #0A192F;
  --bg-card: #112240;
  --bg-card-hover: #1A3358;
  --text-primary: #CCD6F6;
  --text-secondary: #8892B0;
  --text-heading: #E6F1FF;
  --border-color: #233554;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --radius: 8px;
  --shadow: 0 10px 30px -15px rgba(0, 180, 216, 0.15);
  --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-bottom: 0.8rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.6rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-secondary); }

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

/* Layout */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-wide {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 25, 47, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.8rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 2rem;
}

.site-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.site-logo span {
  color: var(--text-heading);
}

.main-nav {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-heading);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 180, 216, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(0, 180, 216, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-heading) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 2.5rem;
}

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

.hero-stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  font-family: var(--font-mono);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

/* Data Cards */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.data-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.8rem;
  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(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}

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

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

.data-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.data-card-title {
  font-size: 1.1rem;
  color: var(--text-heading);
  font-weight: 600;
}

.data-card-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
}

.badge-up {
  background: rgba(76, 175, 80, 0.15);
  color: var(--success);
}

.badge-down {
  background: rgba(255, 82, 82, 0.15);
  color: var(--danger);
}

.data-card-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-heading);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
}

.data-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.data-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.2rem;
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 500;
}

.data-card-link:hover {
  gap: 0.8rem;
}

/* Section Styles */
.section {
  padding: 5rem 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: 1.8rem;
  color: var(--text-heading);
  position: relative;
  padding-left: 1rem;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary);
  border-radius: 2px;
}

.section-more {
  font-size: 0.9rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Table Styles */
.data-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

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

.data-table th {
  padding: 1rem 1.2rem;
  text-align: left;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

.data-table .rank {
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
}

.data-table .movie-title {
  font-weight: 600;
  color: var(--text-heading);
}

.data-table .positive {
  color: var(--success);
}

.data-table .negative {
  color: var(--danger);
}

/* Image Cards */
.image-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
}

.image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.image-card:hover img {
  transform: scale(1.05);
}

.image-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(transparent, rgba(10, 25, 47, 0.9));
}

.image-card-overlay h3 {
  color: #fff;
  font-size: 1.1rem;
}

/* Ticker / Counter Animation */
.ticker-value {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 3rem;
  color: var(--primary);
  letter-spacing: -1px;
}

/* FAQ Section */
.faq-list {
  list-style: none;
}

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

.faq-question {
  padding: 1.2rem 1.5rem;
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  color: var(--text-heading);
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-answer {
  padding: 1.2rem 1.5rem;
  color: var(--text-secondary);
  display: none;
  border-top: 1px solid var(--border-color);
}

.faq-item.active .faq-answer {
  display: block;
}

/* Footer */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links h4 {
  color: var(--text-heading);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--bg-deep);
}

/* Breadcrumb */
.breadcrumb {
  padding: 6rem 0 1rem;
  font-size: 0.85rem;
}

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

.breadcrumb span {
  color: var(--text-secondary);
  margin: 0 0.5rem;
}

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

/* Page Header */
.page-header {
  padding: 2rem 0 3rem;
}

.page-header h1 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.page-header p {
  font-size: 1.05rem;
  max-width: 700px;
}

/* Content Area */
.content-area {
  padding: 2rem 0 4rem;
}

.content-area article {
  max-width: 900px;
}

.content-area article h2 {
  margin-top: 2.5rem;
}

.content-area article h3 {
  margin-top: 2rem;
}

.content-area article p {
  margin-bottom: 1.2rem;
  line-height: 1.8;
}

.content-area article ul,
.content-area article ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.content-area article li {
  margin-bottom: 0.5rem;
}

/* Search Page */
.search-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem 0;
}

.search-input-wrapper {
  position: relative;
  margin-bottom: 2rem;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem;
  padding-right: 3.5rem;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-heading);
  font-size: 1.1rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
}

.search-btn {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--primary);
  font-size: 1.3rem;
  cursor: pointer;
}

.search-results {
  list-style: none;
}

.search-result-item {
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  transition: var(--transition);
}

.search-result-item:hover {
  border-color: var(--primary);
  background: var(--bg-card);
}

.search-result-item h3 {
  margin-bottom: 0.5rem;
}

.search-result-item h3 a {
  color: var(--text-heading);
}

.search-result-item p {
  font-size: 0.9rem;
  margin: 0;
}

/* 404 Page */
.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.error-code {
  font-size: 8rem;
  font-weight: 900;
  color: var(--primary);
  font-family: var(--font-mono);
  opacity: 0.3;
}

.error-message {
  font-size: 1.5rem;
  color: var(--text-heading);
  margin: 1rem 0;
}

/* App Download Page */
.app-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 4rem 0;
}

.app-features {
  list-style: none;
}

.app-features li {
  padding: 0.8rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--text-secondary);
}

.app-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* Chart Placeholder */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Tags */
.tag {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  background: rgba(0, 180, 216, 0.1);
  color: var(--primary);
  border-radius: 4px;
  font-size: 0.8rem;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

/* Related Links */
.related-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.related-links h3 {
  margin-bottom: 1rem;
}

.related-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.related-link-item {
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.related-link-item:hover {
  border-color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .app-section {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-deep);
    flex-direction: column;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
  }
  .main-nav.active {
    display: flex;
  }
  .hero-section {
    padding: 6rem 0 3rem;
    min-height: auto;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 1.5rem;
  }
  .data-grid {
    grid-template-columns: 1fr;
  }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  .container { padding: 0 1rem; }
}

@media (max-width: 480px) {
  .hero-stat-number {
    font-size: 1.8rem;
  }
  .ticker-value {
    font-size: 2rem;
  }
}

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

@keyframes countUp {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}