/* 星空无限传媒 - 全局样式 */
:root {
  --primary: #0a0a1a;
  --secondary: #1a1a3a;
  --accent: #6366f1;
  --accent-glow: #818cf8;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --gold: #fbbf24;
  --gradient-start: #0f0f23;
  --gradient-end: #1e1b4b;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', -apple-system, sans-serif;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* 星空背景动画 */
.starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.starfield::before,
.starfield::after {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, white, transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
    radial-gradient(1px 1px at 90px 40px, white, transparent),
    radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.9), transparent),
    radial-gradient(1px 1px at 230px 80px, white, transparent),
    radial-gradient(2px 2px at 300px 200px, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 350px 150px, white, transparent),
    radial-gradient(2px 2px at 420px 60px, rgba(255,255,255,0.8), transparent);
  background-repeat: repeat;
  background-size: 500px 500px;
  animation: twinkle 8s ease-in-out infinite;
}

.starfield::after {
  background-size: 700px 700px;
  animation-delay: -4s;
  opacity: 0.5;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50% { opacity: 0.7; transform: translateY(-10px); }
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(99, 102, 241, 0.2);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--text) 0%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--gold) 100%);
  transition: width 0.3s ease;
}

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

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

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

.mobile-menu span {
  width: 28px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* 主要内容区域 */
main {
  position: relative;
  z-index: 1;
}

/* 英雄区域 */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  text-align: center;
}

.hero-content {
  max-width: 900px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent-glow) 50%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.2); }
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.keyword-tag {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 0.6rem 1.5rem;
  border-radius: 50px;
  font-size: 0.95rem;
  color: var(--accent-glow);
  transition: all 0.3s ease;
}

.keyword-tag:hover {
  background: rgba(99, 102, 241, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(99, 102, 241, 0.3);
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #4f46e5 100%);
  color: white;
  box-shadow: 0 4px 25px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 35px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent-glow);
}

.btn-secondary:hover {
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-3px);
}

/* 区块通用样式 */
.section {
  padding: 6rem 2rem;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--text) 0%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* 服务卡片 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: rgba(26, 26, 58, 0.6);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 20px;
  padding: 2.5rem;
  transition: all 0.4s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent);
  box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
}

.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.service-card p {
  color: var(--text-muted);
  line-height: 1.8;
}

/* 作品展示 */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.work-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 16/10;
  group: work;
}

.work-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.work-card:hover img {
  transform: scale(1.1);
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 26, 0.95) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.work-card:hover .work-overlay {
  opacity: 1;
}

.work-overlay h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.work-overlay p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 关于我们 */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--accent-glow);
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.9;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.about-image::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: 20px;
  bottom: 20px;
  border: 2px solid var(--accent);
  border-radius: 20px;
  z-index: -1;
}

/* 统计数据 */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.stat-item {
  text-align: center;
  padding: 1.5rem;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 16px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-glow) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

/* 联系区域 */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info h3 {
  font-size: 1.6rem;
  margin-bottom: 2rem;
  color: var(--accent-glow);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: rgba(99, 102, 241, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.contact-details p {
  color: var(--text-muted);
}

.contact-form {
  background: rgba(26, 26, 58, 0.6);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 20px;
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.2rem;
  background: rgba(10, 10, 26, 0.6);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 12px;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* 页脚 */
.footer {
  background: rgba(10, 10, 26, 0.9);
  border-top: 1px solid rgba(99, 102, 241, 0.2);
  padding: 4rem 2rem 2rem;
  position: relative;
  z-index: 1;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 1rem;
  line-height: 1.8;
}

.footer-links h4 {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text);
}

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

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 3rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(99, 102, 241, 0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-3px);
}

/* 页面标题区域 */
.page-hero {
  padding: 10rem 2rem 4rem;
  text-align: center;
  background: linear-gradient(to bottom, rgba(99, 102, 241, 0.1) 0%, transparent 100%);
}

.page-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

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

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

/* 内容详情 */
.content-section {
  padding: 4rem 2rem;
}

.content-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.content-wrapper h2 {
  font-size: 1.8rem;
  margin: 2.5rem 0 1rem;
  color: var(--accent-glow);
}

.content-wrapper h3 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
  color: var(--text);
}

.content-wrapper p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.9;
}

.content-wrapper ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.content-wrapper ul li {
  color: var(--text-muted);
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.8rem;
}

.content-wrapper ul li::before {
  content: '★';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-image {
    order: -1;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
  
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 1rem;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-menu {
    display: flex;
  }
  
  .hero {
    padding: 7rem 1.5rem 3rem;
  }
  
  .section {
    padding: 4rem 1.5rem;
  }
  
  .services-grid,
  .works-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }
  
  .keyword-tag {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }
  
  .stats-row {
    grid-template-columns: 1fr;
  }
  
  .stat-number {
    font-size: 2rem;
  }
}

/* 加载动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.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; }