/* 太阳耀斑主题 Solar Flare Theme */
:root {
  /* 主要颜色 */
  --primary-flame: #FF4136;          /* 火焰红 */
  --primary-orange: #FF851B;         /* 橙色 */
  --primary-gold: #FFDC00;           /* 金色 */
  --primary-space: #001f3f;          /* 深空蓝 */
  --primary-purple: #B10DC9;         /* 宇宙紫 */
  
  /* 渐变 */
  --gradient-flame: linear-gradient(135deg, var(--primary-flame), var(--primary-orange));
  --gradient-gold: linear-gradient(135deg, var(--primary-gold), #FFEAA4);
  --gradient-space: linear-gradient(135deg, var(--primary-space), #000000);
  --gradient-purple: linear-gradient(135deg, var(--primary-purple), #F012BE);
  --gradient-fire: linear-gradient(45deg, var(--primary-flame), var(--primary-orange), var(--primary-gold));
  
  /* 文字颜色 */
  --text-light: #FFFFFF;
  --text-light-secondary: #F0F0F0;
  --text-dark: #111111;
  --text-gold: #FFD700;
  
  /* 背景和卡片 */
  --bg-dark: #111111;
  --card-bg: rgba(30, 30, 40, 0.85);
  --card-border: rgba(255, 133, 27, 0.4);
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  
  /* 特效 */
  --glow-flame: 0 0 15px var(--primary-flame);
  --glow-orange: 0 0 15px var(--primary-orange);
  --glow-gold: 0 0 15px var(--primary-gold);
  --glow-purple: 0 0 15px var(--primary-purple);
  
  /* 过渡动画 */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* 圆角 */
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  
  /* 阴影 */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.5);
  
  /* 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-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 粒子背景系统 */
.particle-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--primary-gold);
  opacity: 0.7;
  animation: float 15s infinite ease-in-out;
  box-shadow: var(--glow-gold);
}

.particle.orange {
  background: var(--primary-orange);
  box-shadow: var(--glow-orange);
}

.particle.red {
  background: var(--primary-flame);
  box-shadow: var(--glow-flame);
}

.particle.purple {
  background: var(--primary-purple);
  box-shadow: var(--glow-purple);
}

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

/* 流星动画 */
.meteor {
  position: absolute;
  top: -50px;
  width: 2px;
  height: 50px;
  background: linear-gradient(to bottom, var(--primary-gold), transparent);
  box-shadow: var(--glow-gold);
  animation: meteorFall linear forwards;
  z-index: -1;
}

@keyframes meteorFall {
  to {
    transform: translateY(calc(100vh + 50px)) translateX(100px);
  }
}

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

/* 标题 */
.solar-title {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  background: var(--gradient-fire);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 10px rgba(255, 65, 54, 0.3);
}

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

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

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

/* 按钮 */
.solar-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  font-family: inherit;
  gap: 8px;
  background: var(--gradient-fire);
  color: var(--text-dark);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.solar-button:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow-flame), var(--shadow-lg);
}

.solar-button:active {
  transform: translateY(1px);
}

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

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

.solar-button.secondary {
  background: var(--gradient-space);
  color: var(--text-light);
}

.solar-button.small {
  padding: 8px 16px;
  font-size: 0.9rem;
}

/* 卡片 */
.solar-card {
  background: var(--card-bg);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  position: relative;
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.solar-card:hover {
  transform: perspective(1000px) rotateY(5deg) rotateX(5deg);
  box-shadow: var(--glow-flame), var(--shadow-lg);
}

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

.solar-card:hover::before {
  opacity: 1;
}

/* 导航 */
.solar-nav {
  background: rgba(17, 17, 17, 0.9);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 133, 27, 0.3);
  box-shadow: var(--shadow-md);
}

.solar-nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.solar-logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-fire);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.solar-nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.solar-nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

.solar-nav-link:hover,
.solar-nav-link.active {
  color: var(--primary-orange);
  text-shadow: var(--glow-orange);
}

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

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

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

.search-form {
  display: flex;
  gap: 0.5rem;
}

.solar-search-input {
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-md);
  border: 2px solid rgba(255, 133, 27, 0.5);
  background: rgba(30, 30, 40, 0.8);
  color: var(--text-light);
  font-family: inherit;
  min-width: 250px;
  transition: var(--transition-fast);
}

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

.solar-search-btn {
  background: var(--gradient-fire);
  color: var(--text-dark);
  border: none;
  border-radius: var(--border-radius-md);
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-fast);
}

.solar-search-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-flame);
}

/* 移动端菜单 */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
}

.hamburger:hover {
  background: rgba(255, 133, 27, 0.2);
}

.mobile-panel {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(17, 17, 17, 0.95);
  backdrop-filter: blur(10px);
  z-index: 2000;
  animation: slideInLeft var(--transition-normal);
}

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

.panel-content-wrapper {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #000000;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid rgba(255, 133, 27, 0.3);
}

.panel-close {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
}

.panel-close:hover {
  background: rgba(255, 133, 27, 0.2);
}

.mobile-menu {
  list-style: none;
  padding: 2rem;
  flex: 1;
}

.mobile-item {
  margin-bottom: 1rem;
}

.mobile-link {
  display: block;
  color: var(--text-light);
  text-decoration: none;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 1rem;
  border-radius: var(--border-radius-md);
  transition: var(--transition-fast);
}

.mobile-link:hover,
.mobile-link.active {
  background: var(--gradient-fire);
  color: var(--text-dark);
}

.mobile-search {
  padding: 0 2rem 2rem;
}

.mobile-search-form {
  display: flex;
  gap: 0.5rem;
}

/* 页脚 */
.solar-footer {
  background: var(--gradient-space);
  color: var(--text-light);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-gold);
}

.solar-text {
  color: var(--text-light-secondary);
  margin-bottom: 1rem;
}

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

.footer-link {
  margin-bottom: 0.5rem;
}

.footer-link a {
  color: var(--text-light-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light-secondary);
  font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .solar-title.h1 {
    font-size: 2.8rem;
  }
  
  .solar-title.h2 {
    font-size: 2.2rem;
  }
  
  .solar-nav-menu {
    display: none;
  }
  
  .solar-search-box {
    display: none;
  }
  
  .hamburger {
    display: block;
  }
  
  .solar-nav-container {
    padding: 1rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  
  .solar-title.h1 {
    font-size: 2.3rem;
  }
  
  .solar-title.h2 {
    font-size: 1.8rem;
  }
  
  .solar-card:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
  }
}

@media (max-width: 576px) {
  .solar-nav-container {
    padding: 0.8rem;
  }
  
  .solar-title.h1 {
    font-size: 2rem;
  }
  
  .solar-button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
  
  .mobile-search-form {
    flex-direction: column;
  }
}