/* ==============================
   Grid Theme - Main Styles
   ============================== */

:root {
  /* 主题色板 - 网格科技风 */
  --primary-electric: #00f0ff;
  --secondary-neon: #ff00ea;
  --accent-lime: #b4ff39;
  --accent-orange: #ff6b35;
  --dark-bg: #0a0a1a;
  --darker-bg: #050510;
  --grid-line: rgba(0, 240, 255, 0.1);
  
  /* 渐变 */
  --gradient-electric: linear-gradient(135deg, var(--primary-electric), var(--secondary-neon));
  --gradient-neon: linear-gradient(90deg, var(--secondary-neon), var(--accent-lime));
  --gradient-fire: linear-gradient(135deg, var(--accent-orange), #ff2a00);
  
  /* 文字颜色 */
  --text-primary: #ffffff;
  --text-secondary: #e0e0ff;
  --text-tertiary: #a0a0c0;
  
  /* 网格效果 */
  --grid-pattern: 
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  
  /* 阴影和发光 */
  --glow-electric: 0 0 15px rgba(0, 240, 255, 0.7);
  --glow-neon: 0 0 15px rgba(255, 0, 234, 0.7);
  --glow-lime: 0 0 15px rgba(180, 255, 57, 0.7);
  --shadow-heavy: 0 10px 30px rgba(0, 0, 0, 0.5);
  
  /* 动画 */
  --transition-fast: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-normal: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-slow: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  
  /* 断点 */
  --breakpoint-mobile: 576px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 992px;
  --breakpoint-large: 1200px;
}

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

body {
  font-family: 'Orbitron', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  background-image: 
    var(--grid-pattern),
    radial-gradient(circle at 10% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(255, 0, 234, 0.05) 0%, transparent 20%);
  background-size: 
    40px 40px,
    100% 100%,
    100% 100%;
}

/* 网格背景动画系统 */
.animated-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  background-image: var(--grid-pattern);
  background-size: 40px 40px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 40px 40px;
  }
}

.grid-line {
  position: absolute;
  background: linear-gradient(to right, transparent, var(--primary-electric), transparent);
  height: 1px;
  width: 100%;
  animation: lineGlow 3s ease-in-out infinite alternate;
}

.grid-line.vertical {
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--primary-electric), transparent);
}

@keyframes lineGlow {
  0% {
    opacity: 0.3;
    box-shadow: 0 0 5px var(--primary-electric);
  }
  100% {
    opacity: 0.8;
    box-shadow: 0 0 20px var(--primary-electric);
  }
}

/* 流星动画元素 - 修复跳动问题 */
.meteor {
  position: fixed; /* 改为fixed定位，避免影响文档流 */
  top: -100px;
  background: linear-gradient(to right, transparent, var(--primary-electric), transparent);
  border-radius: 50%;
  z-index: 999; /* 确保在合理层级 */
  pointer-events: none; /* 避免干扰用户交互 */
  transform: rotate(45deg); /* 倾斜角度 */
  animation: meteorFall linear forwards;
}

@keyframes meteorFall {
  0% {
    transform: rotate(45deg) translateY(0) translateX(0);
    opacity: 1;
  }
  100% {
    transform: rotate(45deg) translateY(100vh) translateX(100px);
    opacity: 0;
  }
}

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

/* 标题 */
.grid-title {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 1px;
  background: var(--gradient-electric);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--glow-electric);
  position: relative;
}

.grid-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100px;
  height: 3px;
  background: var(--gradient-electric);
  border-radius: 3px;
  box-shadow: var(--glow-electric);
}

.grid-title.h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.grid-title.h2 {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

.grid-title.h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

/* 按钮 */
.grid-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  font-family: inherit;
  gap: 10px;
  background: var(--gradient-electric);
  color: var(--dark-bg);
  box-shadow: var(--glow-electric), var(--shadow-heavy);
  position: relative;
  overflow: hidden;
  z-index: 1;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.grid-button:hover {
  transform: translateY(-3px);
  box-shadow: 
    var(--glow-electric), 
    var(--glow-neon), 
    0 15px 30px rgba(0, 0, 0, 0.6);
}

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

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

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

.grid-button.secondary {
  background: var(--gradient-neon);
  box-shadow: var(--glow-neon), var(--shadow-heavy);
}

.grid-button.lime {
  background: var(--gradient-fire);
  box-shadow: var(--glow-lime), var(--shadow-heavy);
}

.grid-button.outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--primary-electric);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.grid-button.outline:hover {
  background: var(--primary-electric);
  color: var(--dark-bg);
  box-shadow: var(--glow-electric);
}

.grid-button.small {
  padding: 10px 20px;
  font-size: 0.85rem;
}

/* 卡片 */
.grid-card {
  background: rgba(20, 20, 40, 0.7);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  position: relative;
  border: 1px solid rgba(0, 240, 255, 0.2);
  box-shadow: var(--shadow-heavy);
  backdrop-filter: blur(10px);
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.grid-card:hover {
  transform: perspective(1000px) rotateY(5deg) rotateX(5deg);
  box-shadow: 
    0 0 20px rgba(0, 240, 255, 0.5),
    0 0 30px rgba(255, 0, 234, 0.3),
    var(--shadow-heavy);
  border: 1px solid var(--primary-electric);
}

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

.grid-card:hover::before {
  opacity: 0.3;
}

/* 圆形导航 */
.circle-nav {
  position: relative;
  z-index: 1000;
  padding: 1.5rem 2rem;
}

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

.circle-logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-electric);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: 2px;
  font-family: 'Orbitron', cursive;
  text-shadow: var(--glow-electric);
  z-index: 10;
}

.logo-link {
  text-decoration: none;
  color: inherit;
}

.circle-nav-menu {
  display: flex;
  list-style: none;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -55%) rotate(-17deg);
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(20, 20, 40, 0.3);
  border: 1px solid rgba(0, 240, 255, 0.2);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
  backdrop-filter: blur(10px);
}

.nav-item {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(var(--item-angle)) translate(100px) rotate(calc(var(--item-angle) * -1));
  width: 60px;
  height: 60px;
}

.circle-nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(20, 20, 40, 0.7);
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  position: relative;
  border: 1px solid rgba(0, 240, 255, 0.3);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
  font-size: 1.2rem;
  transform: rotate(18deg);
}

.circle-nav-link:hover,
.circle-nav-link.active {
  color: var(--text-primary);
  background: rgba(0, 240, 255, 0.2);
  box-shadow: var(--glow-electric);
  /* transform: scale(1.1); */
  transform: rotate(375deg);
}

.nav-tooltip {
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 10, 25, 0.9);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  border: 1px solid rgba(0, 240, 255, 0.3);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.circle-nav-link:hover .nav-tooltip {
  opacity: 1;
  visibility: visible;
  top: -35px;
}

.search-toggle {
  background: rgba(20, 20, 40, 0.7);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--text-primary);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition-fast);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
  z-index: 10;
}

.search-toggle:hover {
  background: var(--primary-electric);
  color: var(--dark-bg);
  box-shadow: var(--glow-electric);
  transform: scale(1.1);
}

.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 25, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-container {
  width: 90%;
  max-width: 600px;
  position: relative;
}

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

.circle-search-input {
  flex: 1;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 240, 255, 0.3);
  background: rgba(20, 20, 40, 0.7);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1.1rem;
  transition: var(--transition-fast);
  backdrop-filter: blur(10px);
  font-family: 'Orbitron', sans-serif;
}

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

.search-submit {
  background: var(--gradient-electric);
  color: var(--dark-bg);
  border: none;
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.search-submit:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow-electric);
}

.search-close {
  position: absolute;
  top: -60px;
  right: 0;
  background: rgba(20, 20, 40, 0.7);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--text-primary);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  transition: var(--transition-fast);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.search-close:hover {
  background: var(--secondary-neon);
  color: var(--text-primary);
  box-shadow: var(--glow-neon);
  transform: rotate(90deg);
}

/* 移动端浮动导航 */
.mobile-float-nav {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
}

.float-nav-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-electric);
  color: var(--dark-bg);
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--glow-electric), var(--shadow-heavy);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  position: relative;
}

.float-nav-toggle:hover {
  transform: scale(1.1) rotate(180deg);
}

.float-nav-menu {
  position: absolute;
  bottom: 70px;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.float-nav-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-nav-link,
.float-search-toggle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(20, 20, 40, 0.9);
  color: var(--text-primary);
  border: 1px solid rgba(0, 240, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  text-decoration: none;
  transition: var(--transition-fast);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.float-nav-link:hover,
.float-nav-link.active,
.float-search-toggle:hover {
  background: rgba(0, 240, 255, 0.2);
  color: var(--text-primary);
  box-shadow: var(--glow-electric);
  transform: scale(1.1);
}

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

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

.grid-search-input {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 240, 255, 0.3);
  background: rgba(20, 20, 40, 0.7);
  color: var(--text-primary);
  font-family: inherit;
  min-width: 280px;
  transition: var(--transition-fast);
  backdrop-filter: blur(10px);
  font-family: 'Orbitron', sans-serif;
}

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

.grid-search-btn {
  background: var(--gradient-electric);
  color: var(--dark-bg);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.9rem;
}

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

/* 移动端菜单 */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
  background: rgba(20, 20, 40, 0.7);
  border: 1px solid rgba(0, 240, 255, 0.3);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.hamburger:hover {
  background: var(--primary-electric);
  color: var(--dark-bg);
  box-shadow: var(--glow-electric);
}

.mobile-panel {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 25, 0.98);
  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;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(0, 240, 255, 0.3);
}

.panel-close {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
  background: rgba(20, 20, 40, 0.7);
  border: 1px solid rgba(0, 240, 255, 0.3);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.panel-close:hover {
  background: var(--secondary-neon);
  color: var(--text-primary);
  box-shadow: var(--glow-neon);
}

.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(--radius-md);
  transition: var(--transition-fast);
  border: 1px solid transparent;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.mobile-link:hover,
.mobile-link.active {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--text-primary);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

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

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

/* 页脚 */
.grid-footer {
  background: rgba(10, 10, 25, 0.9);
  color: var(--text-primary);
  padding: 4rem 0 2.5rem;
  margin-top: 5rem;
  border-top: 1px solid rgba(0, 240, 255, 0.3);
  backdrop-filter: blur(15px);
  position: relative;
  z-index: 1000;
  box-shadow: var(--glow-electric);
}

.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(--text-primary);
  background: var(--gradient-electric);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--glow-electric);
}

.grid-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;
  font-family: 'Orbitron', sans-serif;
}

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

.copyright {
  text-align: center;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(0, 240, 255, 0.2);
  color: var(--text-tertiary);
  font-size: 0.9rem;
  font-family: 'Orbitron', sans-serif;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .circle-nav-menu {
    display: none;
  }
  
  .search-toggle {
    display: none;
  }
  
  .mobile-float-nav {
    display: block;
  }
  
  .grid-title.h1 {
    font-size: 2.8rem;
  }
  
  .grid-title.h2 {
    font-size: 2.2rem;
  }
  
  .grid-nav-menu {
    display: none;
  }
  
  .grid-search-box {
    display: none;
  }
  
  .hamburger {
    display: block;
  }
  
  .grid-nav-container {
    padding: 1.25rem;
  }
  
  .nav-center {
    justify-content: space-between;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  .circle-logo {
    font-family: Brush Script MT,cursive;
  }
  .grid-title.h1 {
    font-size: 2.3rem;
  }
  
  .grid-title.h2 {
    font-size: 1.8rem;
  }
  
  .grid-card:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
  }
  
  .grid-button {
    padding: 12px 24px;
    font-size: 0.85rem;
  }
  
  .mobile-search-form {
    flex-direction: column;
  }
  
  .circle-nav {
    padding: 1rem;
  }
}

@media (max-width: 576px) {
  .grid-nav-container {
    padding: 1rem;
  }
  
  .grid-title.h1 {
    font-size: 2rem;
  }
  
  .grid-button {
    padding: 10px 20px;
    font-size: 0.8rem;
  }
  
  .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;
  }
  
  .circle-nav {
    padding: 0.75rem;
  }
  
  .mobile-float-nav {
    bottom: 20px;
    right: 20px;
  }
  
  .float-nav-toggle {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }
  
  .float-nav-link,
  .float-search-toggle {
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
}