/**
 * VR全景漫游系统 - 现代化首页样式 (2025 Glassmorphism风格)
 * 版本: 2026-08-23
 */

/* ========== CSS变量系统 ========== */
:root {
  /* 主色调 */
  --primary: #667eea;
  --primary-light: #764ba2;
  --accent: #f093fb;
  --accent-dark: #ec4899;
  
  /* 玻璃效果 */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-bg-hover: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --glass-shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.2);
  
  /* 文字 */
  --text-primary: #fff;
  --text-secondary: rgba(255, 255, 255, 0.9);
  --text-muted: rgba(255, 255, 255, 0.7);
  
  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 50px;
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 全局样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.vr-home {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--gradient-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========== 动态背景 ========== */
.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.6;
  animation: float 20s infinite ease-in-out;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: rgba(102, 126, 234, 0.8);
  top: -10%;
  left: -10%;
}

.blob-2 {
  width: 600px;
  height: 600px;
  background: rgba(118, 75, 162, 0.7);
  bottom: -15%;
  right: -10%;
  animation-delay: -5s;
}

.blob-3 {
  width: 400px;
  height: 400px;
  background: rgba(240, 147, 251, 0.6);
  top: 40%;
  left: 60%;
  animation-delay: -10s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, -50px) scale(1.1); }
  50% { transform: translate(-30px, 30px) scale(0.9); }
  75% { transform: translate(40px, 20px) scale(1.05); }
}

/* ========== 玻璃组件 ========== */
.glass-nav {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-slow);
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-10px);
  box-shadow: var(--glass-shadow-hover);
}

.glass-card-mini {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(15px);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--glass-border);
}

.glass-badge {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--glass-border);
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.glass-badge-mini {
  background: rgba(102, 126, 234, 0.3);
  backdrop-filter: blur(5px);
  border-radius: 6px;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  border: 1px solid rgba(102, 126, 234, 0.5);
}

.glass-tag {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(5px);
  border-radius: 12px;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.glass-tag:hover {
  background: rgba(255, 255, 255, 0.25);
  color: var(--text-primary);
}

/* ========== 按钮 ========== */
.btn-primary {
  background: var(--gradient-accent);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius-full);
  padding: 0.75rem 2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(240, 147, 251, 0.4);
}

.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: 0.75rem 2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-glass:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

.btn-xl {
  padding: 1.25rem 3rem;
  font-size: 1.25rem;
}

.btn-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
}

.btn-primary:hover .btn-icon {
  transform: translateX(5px);
}

/* ========== 渐变文字 ========== */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========== 动画 ========== */
.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

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

/* ========== 头部导航 ========== */
.vr-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
}

.logo-icon {
  font-size: 2rem;
}

.main-nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

.header-actions {
  display: flex;
  gap: 1rem;
}

/* ========== 英雄区 ========== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  margin-bottom: var(--spacing-md);
  animation-delay: 0.1s;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
  animation-delay: 0.2s;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  animation-delay: 0.3s;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  animation-delay: 0.4s;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  justify-content: center;
  animation-delay: 0.5s;
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  animation: bounce 2s infinite;
}

.mouse-icon {
  width: 30px;
  height: 50px;
  border: 2px solid var(--glass-border);
  border-radius: 15px;
  margin: 0 auto 0.5rem;
  position: relative;
}

.wheel {
  width: 6px;
  height: 10px;
  background: var(--text-primary);
  border-radius: 3px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

@keyframes scroll {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 25px; }
}

/* ========== 作品展示区 ========== */
.works-section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.works-filter {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

/* ========== VR卡片 ========== */
.vr-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

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

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

.card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  display: flex;
  justify-content: space-between;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.overlay-stats {
  display: flex;
  gap: 1rem;
  color: var(--text-primary);
}

.stat {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
}

.card-type-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
}

.card-content {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-link {
  position: absolute;
  inset: 0;
  z-index: 10;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.works-footer {
  text-align: center;
  margin-top: var(--spacing-lg);
}

.btn-load-more {
  position: relative;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
  display: none;
}

.loading {
  pointer-events: none;
  opacity: 0.7;
}

.loading .loading-spinner {
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== 功能特性区 ========== */
.features-section {
  padding: var(--spacing-xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  padding: var(--spacing-md);
  text-align: center;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-desc {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9375rem;
}

.feature-list {
  list-style: none;
  text-align: left;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.feature-list li {
  padding: 0.25rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ========== CTA区域 ========== */
.cta-section {
  padding: var(--spacing-xl) 0;
}

.cta-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.2);
}

.cta-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.cta-desc {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

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

/* ========== 页脚 ========== */
.vr-footer {
  padding: var(--spacing-lg) 0;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(20px);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-brand {
  grid-column: span 1;
}

.brand-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.footer-links {
  display: contents;
}

.link-group h4 {
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.link-group a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.25rem 0;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.link-group a:hover {
  color: var(--text-primary);
}

.footer-contact p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-stats {
    flex-wrap: wrap;
    gap: 1rem;
  }
  
  .works-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .main-nav {
    display: none; /* 移动端隐藏，可用汉堡菜单替代 */
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .glass-card {
    padding: 1rem;
  }
  
  .blob {
    display: none; /* 移动端禁用blob以优化性能 */
  }
}

/* ========== 打印样式 ========== */
@media print {
  .vr-home {
    background: white;
    color: black;
  }
  
  .animated-bg,
  .glass-nav,
  .scroll-hint {
    display: none;
  }
}

/* AI 智能标签 chip */
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tag-chip{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;line-height:1.6;color:#cfe3ff;background:rgba(0,123,255,.18);
  border:1px solid rgba(0,123,255,.35);backdrop-filter:blur(6px);white-space:nowrap}
.tag-chip::before{content:"AI";font-size:9px;font-weight:700;margin-right:5px;
  padding:1px 4px;border-radius:4px;background:linear-gradient(90deg,#007BFF,#FF6B35);color:#fff}