/* 玻璃拟态主题 Glass Morphism Theme */
:root {
  /* 主色调 - 冰蓝色系 */
  --primary-blue: #4cc9f0;
  --secondary-blue: #4361ee;
  --accent-purple: #7209b7;
  --accent-pink: #f72585;
  --light-cyan: #caf0f8;
  
  /* 渐变 */
  --gradient-ocean: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  --gradient-purple: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
  --gradient-sky: linear-gradient(135deg, var(--light-cyan), var(--primary-blue));
  --gradient-rainbow: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue), var(--accent-purple), var(--accent-pink));
  
  /* 文字颜色 */
  --text-primary: #f8f9fa;
  --text-secondary: #e9ecef;
  --text-tertiary: #adb5bd;
  --text-dark: #212529;
  
  /* 背景色 */
  --bg-dark: #0d1b2a;
  --bg-medium: #1b263b;
  --bg-light: #415a77;
  
  /* 玻璃拟态效果 */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --glass-backdrop: blur(10px);
  
  /* 特效 */
  --glow-blue: 0 0 20px rgba(76, 201, 240, 0.7);
  --glow-purple: 0 0 20px rgba(114, 9, 183, 0.7);
  --glow-pink: 0 0 20px rgba(247, 37, 133, 0.7);
  
  /* 过渡动画 */
  --transition-fast: all 0.2s ease;
  --transition-normal: all 0.4s ease;
  --transition-slow: all 0.6s ease;
  
  /* 圆角 */
  --border-radius-sm: 10px;
  --border-radius-md: 20px;
  --border-radius-lg: 30px;
  
  /* 阴影 */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.3);
  
  /* 断点 */
  --breakpoint-xs: 480px;
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  --breakpoint-xxl: 1400px;
}

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

body {
  font-family: 'Poppins', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  background-image: radial-gradient(circle at 10% 20%, rgba(76, 201, 240, 0.1) 0%, transparent 20%),
                    radial-gradient(circle at 90% 80%, rgba(114, 9, 183, 0.1) 0%, transparent 20%);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 背景动画系统 */
.animated-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.bubble {
  position: absolute;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-backdrop);
  animation: float 15s infinite ease-in-out;
  box-shadow: var(--glass-shadow);
}

.bubble.blue {
  background: rgba(76, 201, 240, 0.2);
  border: 1px solid rgba(76, 201, 240, 0.4);
  box-shadow: var(--glow-blue);
}

.bubble.purple {
  background: rgba(114, 9, 183, 0.2);
  border: 1px solid rgba(114, 9, 183, 0.4);
  box-shadow: var(--glow-purple);
}

.bubble.pink {
  background: rgba(247, 37, 133, 0.2);
  border: 1px solid rgba(247, 37, 133, 0.4);
  box-shadow: var(--glow-pink);
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg) scale(1);
    opacity: 0.7;
  }
  25% {
    transform: translate(20px, 20px) rotate(90deg) scale(1.1);
  }
  50% {
    transform: translate(0, 40px) rotate(180deg) scale(0.9);
    opacity: 0.9;
  }
  75% {
    transform: translate(-20px, 20px) rotate(270deg) scale(1.2);
  }
}

/* 容器 */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 标题 */
.glass-title {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.glass-title.h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.glass-title.h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.glass-title.h3 {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
}

/* 按钮 */
.glass-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  font-family: inherit;
  gap: 10px;
  background: var(--gradient-ocean);
  color: var(--text-dark);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  z-index: 1;
  backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
}

.glass-button:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow-blue), var(--shadow-lg);
}

.glass-button:active {
  transform: translateY(0);
}

.glass-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-purple);
  z-index: -1;
  opacity: 0;
  transition: var(--transition-normal);
}

.glass-button:hover::before {
  opacity: 1;
}

.glass-button.secondary {
  background: var(--gradient-purple);
  color: var(--text-primary);
}

.glass-button.outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--primary-blue);
}

.glass-button.outline:hover {
  background: var(--primary-blue);
  color: var(--text-dark);
}

.glass-button.small {
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* 卡片 */
.glass-card {
  background: var(--glass-bg);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  position: relative;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  backdrop-filter: var(--glass-backdrop);
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.glass-card:hover {
  transform: perspective(1000px) rotateY(5deg) rotateX(5deg);
  box-shadow: var(--glow-blue), var(--shadow-lg);
  border: 1px solid var(--primary-blue);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-rainbow);
  border-radius: var(--border-radius-lg);
  z-index: -1;
  opacity: 0;
  transition: var(--transition-normal);
}

.glass-card:hover::before {
  opacity: 0.5;
}

/* 导航 */
.glass-nav {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
  
}

.glass-logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: 1px;
  font-family: Brush Script MT,cursive;
}

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

.glass-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.glass-nav-link:hover,
.glass-nav-link.active {
  color: var(--text-primary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.glass-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--gradient-rainbow);
  border-radius: 3px;
  transition: var(--transition-normal);
  transform: translateX(-50%);
}

.glass-nav-link:hover::after,
.glass-nav-link.active::after {
  width: 70%;
}

/* 搜索框 */
.glass-search-box {
  display: flex;
  align-items: center;
}

.search-form {
  display: flex;
  gap: 0.75rem;
}

.glass-search-input {
  padding: 0.85rem 1.25rem;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-primary);
  font-family: inherit;
  min-width: 280px;
  transition: var(--transition-fast);
  backdrop-filter: var(--glass-backdrop);
}

.glass-search-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: var(--glow-blue);
}

.glass-search-btn {
  background: var(--gradient-ocean);
  color: #fff;
  border: none;
  border-radius: var(--border-radius-md);
  padding: 0.85rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.glass-search-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow-blue);
}

/* 移动端菜单 */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
  backdrop-filter: var(--glass-backdrop);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.hamburger:hover {
  background: var(--primary-blue);
  color: var(--text-dark);
}

.mobile-panel {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(20px);
  z-index: 2000;
  animation: slideInLeft 0.4s ease;
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.panel-content-wrapper {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: var(--text-dark);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--glass-border);
}

.panel-close {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--border-radius-sm);
  backdrop-filter: var(--glass-backdrop);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.panel-close:hover {
  background: var(--accent-pink);
  color: var(--text-primary);
}

.mobile-menu {
  list-style: none;
  padding: 2.5rem;
  flex: 1;
}

.mobile-item {
  margin-bottom: 1.5rem;
}

.mobile-link {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 600;
  padding: 1.25rem;
  border-radius: var(--border-radius-md);
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.mobile-link:hover,
.mobile-link.active {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.mobile-search {
  padding: 0 2.5rem 2.5rem;
}

.mobile-search-form {
  display: flex;
  gap: 0.75rem;
}

/* 页脚 */
.glass-footer {
  background: var(--glass-bg);
  color: var(--text-primary);
  padding: 4rem 0 2.5rem;
  margin-top: 5rem;
  border-top: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-backdrop);
  position: relative;
  z-index: 1000; /* 确保footer在流星之上 */
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-title {
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  color: var(--light-cyan);
  background: var(--gradient-ocean);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-text {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

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

.footer-link {
  margin-bottom: 0.75rem;
}

.footer-link a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-link a:hover {
  color: var(--primary-blue);
  text-shadow: var(--glow-blue);
}

.copyright {
  text-align: center;
  padding-top: 2.5rem;
  border-top: 1px solid var(--glass-border);
  color: var(--text-tertiary);
  font-size: 1rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .glass-title.h1 {
    font-size: 2.8rem;
  }
  
  .glass-title.h2 {
    font-size: 2.2rem;
  }
  
  .glass-nav-menu {
    display: none;
  }
  
  .glass-search-box {
    display: none;
  }
  
  .hamburger {
    display: block;
  }
  
  .glass-nav-container {
    padding: 1.25rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  
  .glass-title.h1 {
    font-size: 2.3rem;
  }
  
  .glass-title.h2 {
    font-size: 1.8rem;
  }
  
  .glass-card:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
  }
  
  .glass-button {
    padding: 12px 24px;
    font-size: 0.95rem;
  }
  
  .mobile-search-form {
    flex-direction: column;
  }
  .hidden-title {
    display: none;
  }
}

@media (max-width: 576px) {
  .glass-nav-container {
    padding: 1rem;
  }
  
  .glass-title.h1 {
    font-size: 2rem;
  }
  
  .glass-button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
  
  .mobile-search-form {
    flex-direction: column;
  }
  
  .panel-header {
    padding: 1.25rem;
  }
  
  .mobile-menu {
    padding: 1.5rem;
  }
  
  .mobile-link {
    font-size: 1.1rem;
    padding: 1rem;
  }
  
  .mobile-search {
    padding: 0 1.5rem 1.5rem;
  }
}

/* 流星效果样式 */
.meteor {
  position: fixed;
  top: -100px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0));
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  z-index: 9999;
  pointer-events: none;
  animation: meteorFall linear forwards;
}

@keyframes meteorFall {
  to {
    transform: translateY(100vh) translateX(-100px);
  }
}

/* 修复footer跳动问题 */
.glass-footer {
  background: var(--glass-bg);
  color: var(--text-primary);
  padding: 4rem 0 2.5rem;
  margin-top: 5rem;
  border-top: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-backdrop);
  position: relative;
  z-index: 1000; /* 确保footer在流星之上 */
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}