/* ===================================================
   吃瓜视频 - 优质影视剧本创投与IP孵化交易网
   稿纸风 + 原木色系 设计系统
   =================================================== */

/* CSS Variables */
:root {
  --color-primary: #8B5A2B;
  --color-primary-dark: #6B3A1B;
  --color-primary-light: #A67C52;
  --color-secondary: #4A4A4A;
  --color-bg: #FDFBF7;
  --color-card: #FFFFFF;
  --color-text: #2C2C2C;
  --color-text-light: #666666;
  --color-border: #E8E0D4;
  --color-accent: #C17817;
  --color-success: #4A7C59;
  --color-warning: #B8860B;
  --font-heading: "Noto Serif SC", "Source Han Serif CN", serif;
  --font-body: "Noto Sans SC", "Source Han Sans CN", "PingFang SC", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --shadow-sm: 0 1px 3px rgba(139, 90, 43, 0.08);
  --shadow-md: 0 4px 12px rgba(139, 90, 43, 0.12);
  --shadow-lg: 0 8px 24px rgba(139, 90, 43, 0.16);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-secondary);
}

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;
  text-align: justify;
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

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

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  background: var(--color-card);
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.nav-list a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-secondary);
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-list a:hover,
.nav-list a.active {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(253, 251, 247, 0.92) 0%, rgba(139, 90, 43, 0.15) 100%);
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  padding: 3rem 2rem;
  animation: fadeInUp 1s ease;
}

.hero-title {
  font-size: 3rem;
  color: var(--color-primary-dark);
  margin-bottom: 1.5rem;
  letter-spacing: 2px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.typewriter {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-primary);
  border-right: 2px solid var(--color-primary);
  white-space: nowrap;
  overflow: hidden;
  animation: typing 4s steps(30) 1s forwards, blink 0.7s step-end infinite;
  max-width: 0;
  display: inline-block;
}

@keyframes typing {
  from { max-width: 0; }
  to { max-width: 100%; }
}

@keyframes blink {
  50% { border-color: transparent; }
}

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

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

/* Section Styles */
.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--color-card);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 0.8rem;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section-header p {
  color: var(--color-text-light);
  max-width: 600px;
  margin: 1rem auto 0;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
}

.card-tag {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  background: rgba(139, 90, 43, 0.1);
  color: var(--color-primary);
  font-size: 0.8rem;
  border-radius: 20px;
  margin-bottom: 0.8rem;
}

.card-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.card-title a {
  color: var(--color-secondary);
}

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

.card-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.875rem;
}

/* More Link */
.more-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-top: 1.5rem;
}

.more-link::after {
  content: '→';
  transition: transform 0.3s;
}

.more-link:hover::after {
  transform: translateX(4px);
}

/* Radar Chart */
.radar-container {
  max-width: 400px;
  margin: 2rem auto;
}

/* Badge */
.copyright-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: linear-gradient(135deg, #f0e6d3, #e8d5b7);
  border: 1px solid var(--color-primary-light);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--color-primary-dark);
}

.copyright-badge .badge-icon {
  width: 16px;
  height: 16px;
}

/* Writer Profile */
.writer-profile {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem;
  background: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.writer-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-primary-light);
}

/* Detail Page */
.detail-header {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.detail-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.detail-content {
  padding: 3rem 0;
  max-width: 800px;
}

.detail-content h3 {
  margin-top: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.detail-sidebar {
  padding: 2rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

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

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 0;
}

.faq-question {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-secondary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  margin-top: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  display: none;
}

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

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
  padding: 3rem 0;
}

.stat-item .stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-heading);
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
}

/* Footer */
.site-footer {
  background: var(--color-secondary);
  color: #ccc;
  padding: 3rem 0 1.5rem;
}

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

.footer-col h4 {
  color: white;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer-col p {
  font-size: 0.9rem;
  line-height: 1.8;
}

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

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

.footer-col ul li a {
  color: #aaa;
  font-size: 0.9rem;
}

.footer-col ul li a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: #888;
}

/* Search Page */
.search-box {
  max-width: 600px;
  margin: 2rem auto;
  display: flex;
  gap: 0;
}

.search-box input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: 2px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

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

.search-box button {
  padding: 1rem 2rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.search-box button:hover {
  background: var(--color-primary-dark);
}

.search-results {
  max-width: 800px;
  margin: 0 auto;
}

.search-result-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.search-result-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Breadcrumb */
.breadcrumb {
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

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

.breadcrumb span {
  margin: 0 0.5rem;
}

/* Page Hero (inner pages) */
.page-hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, rgba(139, 90, 43, 0.05) 100%);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  color: var(--color-primary-dark);
}

.page-hero p {
  color: var(--color-text-light);
  max-width: 700px;
}

/* Tags */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.tag {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(139, 90, 43, 0.08);
  color: var(--color-primary);
  border-radius: 20px;
  font-size: 0.8rem;
  transition: var(--transition);
}

.tag:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

/* Two Column Layout */
.two-col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: flex-start;
}

/* Secure Reader */
.secure-reader {
  position: relative;
  padding: 2rem;
  background: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  user-select: none;
  -webkit-user-select: none;
}

.secure-reader::before {
  content: '🔒 版权保护阅读模式';
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--color-bg);
  padding: 0 0.5rem;
  font-size: 0.8rem;
  color: var(--color-primary);
}

/* App Download */
.app-download {
  text-align: center;
  padding: 4rem 2rem;
}

.app-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.app-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 2rem;
  background: var(--color-secondary);
  color: white;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
}

.app-btn:hover {
  background: var(--color-primary-dark);
  color: white;
  text-decoration: none;
}

/* 404 Page */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-primary-light);
  opacity: 0.5;
  font-family: var(--font-heading);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
  padding-left: 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-left: -5px;
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 2rem; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  
  .nav-toggle { display: block; }
  
  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-card);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 2px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  
  .nav-list.active { display: flex; }
  
  .main-nav { position: relative; }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .two-col {
    grid-template-columns: 1fr;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .writer-profile {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.6rem; }
  .container { padding: 0 1rem; }
  .section { padding: 2.5rem 0; }
}

/* Scroll Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Print Styles */
@media print {
  .site-header, .site-footer, .nav-toggle { display: none; }
  body { background: white; }
  .hero { min-height: auto; }
}