/* 高级UI设计 - 现代化风格 */

/* ========================================
   CSS 动画关键帧定义
   ======================================== */

/* 渐变背景动画 */
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* 淡入上移动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 淡入缩放动画 */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 标签弹入动画 */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    transform: scale(1.08);
  }
  70% {
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* 脉冲发光动画 */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4), 0 0 40px rgba(139, 92, 246, 0.2);
  }
  50% {
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.6), 0 0 60px rgba(139, 92, 246, 0.3);
  }
}

/* 浮动动画 */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* 旋转光晕 */
@keyframes rotateGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 闪烁动画 */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 波浪动画 */
@keyframes wave {
  0%, 100% { transform: translateX(0) translateY(0); }
  25% { transform: translateX(-5px) translateY(-5px); }
  50% { transform: translateX(0) translateY(-10px); }
  75% { transform: translateX(5px) translateY(-5px); }
}

/* CSS 变量 - 动态主题配色方案 */
:root {
  /* 主色调 - 会被JS动态修改 */
  --color-primary: #8B5CF6;
  --color-primary-light: #A78BFA;
  --color-primary-dark: #7C3AED;
  --color-primary-rgb: 139, 92, 246;
  
  /* 辅助色 */
  --color-secondary: #06B6D4;
  --color-secondary-rgb: 6, 182, 212;
  --color-accent: #F472B6;
  --color-accent-rgb: 244, 114, 182;
  --color-accent-light: #FB7185;
  
  /* 渐变色 - 会被JS动态修改 */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-dark: linear-gradient(135deg, #0c0c1e 0%, #1a1a3e 50%, #0c0c1e 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  
  /* 中性色 - 深色主题 */
  --color-text: #F8FAFC;
  --color-text-secondary: #CBD5E1;
  --color-text-muted: #94A3B8;
  --color-background: #0F0F23;
  --color-background-secondary: #1A1A2E;
  --color-card: rgba(255, 255, 255, 0.05);
  --color-card-hover: rgba(255, 255, 255, 0.1);
  --color-border: rgba(255, 255, 255, 0.1);
  
  /* 玻璃效果 */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  
  /* 阴影 - 使用RGB变量实现动态颜色 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(var(--color-primary-rgb), 0.3);
  
  /* 主题过渡 */
  --theme-transition: 2s ease;
  
  /* 背景色 - 会被JS动态修改 */
  --bg-color-1: #0F0F23;
  --bg-color-2: #1A1A2E;
  --bg-color-3: #16162a;
  
  /* 动画 */
  --transition-fast: 0.2s;
  --transition-normal: 0.3s;
  --transition-slow: 0.5s;
  
  /* 字体 */
  --font-primary: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-base: 16px;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2.5rem;
  --font-size-3xl: 3.5rem;
  --line-height: 1.7;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

/* 基础重置 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 主题过渡效果 - 应用到所有颜色相关属性 */
body,
body::before,
.site-header,
.nav-link,
.logo-link,
.intro-greeting,
.section-title,
.highlight-tag,
.tag,
.hobby-card,
.hobby-card-icon,
.trait-card,
.trait-icon,
.friend-type-card,
.friend-type-icon,
.contact-card,
.contact-card-icon,
.cta-button,
.intro-chat-btn,
.intro-chat-btn::before,
.intro-chat-btn::after,
.form-submit,
.social-link,
.glow-orb,
.particle,
.hobbies-section,
.traits-section,
.friendship-section,
.contact-section,
.introduction-section,
.site-footer,
.hobby-item,
.criteria-item,
.form-input,
.form-textarea,
.nav-link::before,
.hobby-card::before,
.trait-card::before,
.friend-type-card::before {
  transition: 
    all 2s ease !important;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-background);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ========================================
   背景动画效果
   ======================================== */

/* 粒子背景容器 */
.particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.3;
  animation: float 6s ease-in-out infinite;
}

/* 渐变光晕背景 */
.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

.glow-orb-1 {
  width: 600px;
  height: 600px;
  background: var(--color-primary);
  top: -200px;
  right: -200px;
  animation: float 8s ease-in-out infinite;
}

.glow-orb-2 {
  width: 500px;
  height: 500px;
  background: var(--color-accent);
  bottom: -150px;
  left: -150px;
  animation: float 10s ease-in-out infinite reverse;
}

.glow-orb-3 {
  width: 400px;
  height: 400px;
  background: var(--color-secondary);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: float 12s ease-in-out infinite;
}

/* ========================================
   可访问性辅助样式
   ======================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--gradient-primary);
  color: white;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-md);
  z-index: 10000;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: var(--spacing-sm);
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.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;
}

/* ========================================
   全局 focus-visible 样式
   ======================================== */

*:focus {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

/* ========================================
   导航栏样式 - 玻璃拟态
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 35, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-normal) ease;
}

.site-header.scrolled {
  background: rgba(15, 15, 35, 0.95);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-lg);
}

/* Logo 区域 */
.nav-logo {
  flex-shrink: 0;
}

.logo-link {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: all var(--transition-normal) ease;
  position: relative;
}

.logo-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal) ease;
}

.logo-link:hover::after {
  width: 100%;
}

/* 导航链接列表 */
.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}

.nav-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal) ease;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal) ease;
  z-index: -1;
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link:hover::before {
  opacity: 0.15;
}

.nav-link.active {
  color: var(--color-text);
  background: rgba(139, 92, 246, 0.2);
}

/* 汉堡菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-normal) ease;
}

.nav-toggle:hover .hamburger-line {
  background: var(--color-primary);
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ========================================
   自我介绍板块样式
   ======================================== */

.introduction-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--spacing-2xl) var(--spacing-md);
  padding-top: calc(var(--spacing-2xl) + 60px);
  overflow: hidden;
}

/* 背景装饰 */
.introduction-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(244, 114, 182, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 60%);
  z-index: 0;
}

.section-container {
  max-width: 900px;
  width: 100%;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* 问候语样式 */
.intro-greeting {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 0%, #a78bfa 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 1s ease-out;
  text-shadow: 0 0 60px rgba(139, 92, 246, 0.5);
}

/* 自我介绍内容 */
.intro-content {
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.intro-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.intro-text:last-child {
  margin-bottom: 0;
}

/* 关键词高亮标签 */
.highlight-tag {
  display: inline;
  color: var(--color-primary-light);
  font-weight: 600;
  position: relative;
  padding: 0 4px;
  transition: all var(--transition-normal) ease;
}

.highlight-tag::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30%;
  background: linear-gradient(90deg, rgba(139, 92, 246, 0.3), rgba(244, 114, 182, 0.3));
  z-index: -1;
  transition: height var(--transition-normal) ease;
}

.highlight-tag:hover::before {
  height: 100%;
}

/* 关键词标签区域 */
.intro-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
}

/* 标签入场动画 */
.intro-tags .tag:nth-child(1) { animation: bounceIn 0.6s ease-out 0.5s both; }
.intro-tags .tag:nth-child(2) { animation: bounceIn 0.6s ease-out 0.6s both; }
.intro-tags .tag:nth-child(3) { animation: bounceIn 0.6s ease-out 0.7s both; }
.intro-tags .tag:nth-child(4) { animation: bounceIn 0.6s ease-out 0.8s both; }

/* 标签基础样式 - 玻璃效果 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 500;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal) ease;
  cursor: default;
}

.tag:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-glow);
}

/* 标签颜色变体 */
.tag-sports {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(6, 182, 212, 0.1) 100%);
  border-color: rgba(6, 182, 212, 0.3);
  color: #22D3EE;
}

.tag-leisure {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(251, 191, 36, 0.1) 100%);
  border-color: rgba(251, 191, 36, 0.3);
  color: #FBBF24;
}

.tag-tech {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%);
  border-color: rgba(139, 92, 246, 0.3);
  color: #A78BFA;
}

.tag-friendly {
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.2) 0%, rgba(244, 114, 182, 0.1) 100%);
  border-color: rgba(244, 114, 182, 0.3);
  color: #F472B6;
}

/* 与我聊天按钮 - 高级版 */
.intro-chat-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: var(--spacing-xl);
  padding: 16px 40px;
  background: transparent;
  color: white;
  text-decoration: none;
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: 50px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  animation: fadeInUp 1s ease-out 1s both;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

/* 渐变边框 */
.intro-chat-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 50px;
  padding: 2px;
  background: linear-gradient(135deg, #667eea, #764ba2, #f472b6, #667eea);
  background-size: 300% 300%;
  animation: gradientBorder 4s ease infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: -1;
}

/* 背景填充 */
.intro-chat-btn::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
  border-radius: 48px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
  backdrop-filter: blur(10px);
  z-index: -1;
  transition: all 0.4s ease;
}

/* 光效扫过 */
.intro-chat-btn .btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.6s ease;
}

/* 悬浮效果 */
.intro-chat-btn:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 
    0 20px 40px rgba(102, 126, 234, 0.4),
    0 0 60px rgba(139, 92, 246, 0.3),
    inset 0 0 20px rgba(255, 255, 255, 0.1);
}

.intro-chat-btn:hover::after {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.4), rgba(244, 114, 182, 0.3));
}

.intro-chat-btn:hover .btn-shine {
  left: 100%;
}

/* 点击效果 */
.intro-chat-btn:active {
  transform: translateY(-2px) scale(0.98);
}

/* 图标动画 */
.intro-chat-btn .btn-icon {
  display: inline-block;
  font-size: 1.4rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes gradientBorder {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}


/* ========================================
   兴趣爱好板块样式
   ======================================== */

.hobbies-section {
  padding: var(--spacing-2xl) var(--spacing-md);
  position: relative;
  background: var(--color-background-secondary);
}

.hobbies-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 0% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  z-index: 0;
}

.hobbies-section .section-container {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
  background: linear-gradient(135deg, #fff 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  margin: var(--spacing-sm) auto 0;
  border-radius: var(--radius-sm);
}

/* 兴趣分类卡片网格 */
.hobby-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: 100%;
  margin: 0 auto;
  align-items: stretch;
}

/* 兴趣卡片 - 玻璃拟态 */
.hobby-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* 卡片光效 */
.hobby-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
}

.hobby-card:hover::before {
  left: 100%;
}

.hobby-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(139, 92, 246, 0.3);
  background: var(--color-card-hover);
}

/* 卡片图标 */
.hobby-card-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: 2rem;
  transition: all var(--transition-normal) ease;
  position: relative;
}

.hobby-card:hover .hobby-card-icon {
  transform: scale(1.1) rotate(5deg);
}

.icon-sports {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.3) 0%, rgba(6, 182, 212, 0.1) 100%);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.3);
}

.icon-leisure {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.3) 0%, rgba(251, 191, 36, 0.1) 100%);
  box-shadow: 0 0 30px rgba(251, 191, 36, 0.3);
}

.icon-tech {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(139, 92, 246, 0.1) 100%);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.3);
}

/* 卡片标题 */
.hobby-card-title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

/* 兴趣列表 */
.hobby-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* 兴趣项 */
.hobby-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal) ease;
  background: rgba(255, 255, 255, 0.02);
}

.hobby-item:hover {
  background: rgba(139, 92, 246, 0.1);
  transform: translateX(5px);
}

.hobby-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
}

.hobby-info {
  flex: 1;
}

.hobby-name {
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: 4px;
}

.hobby-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ========================================
   个人特质板块样式
   ======================================== */

.traits-section {
  padding: var(--spacing-2xl) var(--spacing-md);
  position: relative;
  background: var(--color-background);
}

.traits-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 50% 0%, rgba(244, 114, 182, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  z-index: 0;
}

.traits-section .section-container {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* 特质卡片网格 */
.trait-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  max-width: 100%;
  margin: 0 auto;
  align-items: stretch;
}

/* 特质卡片 */
.trait-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* 顶部渐变条 */
.trait-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal) ease;
}

.trait-card:hover::before {
  transform: scaleX(1);
}

.trait-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(139, 92, 246, 0.3);
}

/* 特质图标 */
.trait-icon {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 2.5rem;
  transition: all var(--transition-normal) ease;
  position: relative;
}

/* 图标光环效果 */
.trait-icon::after {
  content: '';
  position: absolute;
  top: -5px;
  left: -5px;
  right: -5px;
  bottom: -5px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-normal) ease;
}

.trait-card:hover .trait-icon::after {
  opacity: 1;
}

.trait-card:hover .trait-icon {
  transform: scale(1.1);
}

.icon-friendly {
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.3) 0%, rgba(244, 114, 182, 0.1) 100%);
  box-shadow: 0 0 40px rgba(244, 114, 182, 0.3);
}

.icon-patient {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.3) 0%, rgba(6, 182, 212, 0.1) 100%);
  box-shadow: 0 0 40px rgba(6, 182, 212, 0.3);
}

.icon-caring {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.3) 0%, rgba(251, 191, 36, 0.1) 100%);
  box-shadow: 0 0 40px rgba(251, 191, 36, 0.3);
}

.icon-curious {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.3) 0%, rgba(34, 211, 238, 0.1) 100%);
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.3);
}

/* 特质标题 */
.trait-title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

/* 特质描述 */
.trait-description {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  text-align: left;
}


/* ========================================
   交友期望板块样式
   ======================================== */

.friendship-section {
  padding: var(--spacing-2xl) var(--spacing-md);
  position: relative;
  background: var(--color-background-secondary);
}

.friendship-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 30% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 70%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
  z-index: 0;
}

.friendship-section .section-container {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* 朋友类型卡片网格 */
.friend-type-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  max-width: 100%;
  margin: 0 auto var(--spacing-xl);
  align-items: stretch;
}

/* 朋友类型卡片 */
.friend-type-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* 卡片悬浮光效 */
.friend-type-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transition: transform var(--transition-normal) ease;
}

.friend-type-card:hover::before {
  transform: scaleX(1);
}

.friend-type-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(139, 92, 246, 0.3);
}

/* 朋友类型图标 */
.friend-type-icon {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 2.5rem;
  transition: all var(--transition-normal) ease;
  animation: float 4s ease-in-out infinite;
}

.friend-type-card:hover .friend-type-icon {
  transform: scale(1.15);
  animation: none;
}

.icon-tech-partner {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(139, 92, 246, 0.1) 100%);
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.3);
}

.icon-play-partner {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.3) 0%, rgba(6, 182, 212, 0.1) 100%);
  box-shadow: 0 0 40px rgba(6, 182, 212, 0.3);
}

/* 朋友类型标题 */
.friend-type-title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

/* 朋友类型描述 */
.friend-type-description {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  text-align: left;
}

/* 交友标准区域 */
.friendship-criteria {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  text-align: center;
}

.criteria-title {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
}

.criteria-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.criteria-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  flex: 1;
  min-width: 280px;
  max-width: 360px;
  transition: all var(--transition-normal) ease;
}

.criteria-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(139, 92, 246, 0.3);
  background: var(--color-card-hover);
}

.criteria-icon {
  font-size: 2rem;
  flex-shrink: 0;
  animation: wave 3s ease-in-out infinite;
}

.criteria-content {
  text-align: left;
}

.criteria-name {
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: 4px;
  font-size: var(--font-size-base);
}

.criteria-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* CTA 行动号召区域 */
.friendship-cta {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  max-width: 550px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

/* CTA 背景动画 */
.friendship-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(139, 92, 246, 0.1), transparent 30%);
  animation: rotateGlow 8s linear infinite;
}

.friendship-cta > * {
  position: relative;
  z-index: 1;
}

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

.cta-button {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-xl);
  background: var(--gradient-primary);
  color: white;
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal) ease;
  position: relative;
  overflow: hidden;
  animation: pulseGlow 2s ease-in-out infinite;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.cta-button:hover {
  transform: translateY(-3px) scale(1.05);
  animation: none;
  box-shadow: 0 10px 40px rgba(139, 92, 246, 0.5);
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:active {
  transform: translateY(-1px) scale(1.02);
}

/* ========================================
   页脚样式
   ======================================== */

.site-footer {
  background: linear-gradient(180deg, var(--color-background-secondary) 0%, #0a0a18 100%);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  position: relative;
  border-top: 1px solid var(--glass-border);
}

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

/* 页脚标题 */
.footer-title {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 社交媒体链接区域 */
.footer-social {
  margin-bottom: var(--spacing-lg);
}

.social-links {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

/* 社交链接样式 */
.social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal) ease;
}

.social-link:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.social-icon {
  font-size: 1.2rem;
}

.social-text {
  font-size: 0.95rem;
  font-weight: 500;
}

/* 版权信息 */
.footer-copyright {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
}

.footer-copyright p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ========================================
   滚动动画类
   ======================================== */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ========================================
   滚动条美化
   ======================================== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-background);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Firefox 滚动条 */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-background);
}


/* ========================================
   联系我板块样式
   ======================================== */

.contact-section {
  padding: var(--spacing-2xl) var(--spacing-md);
  position: relative;
  background: var(--color-background);
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(244, 114, 182, 0.15) 0%, transparent 50%);
  z-index: 0;
}

.contact-section .section-container {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-xl);
  align-items: start;
}

/* 联系方式卡片 */
.contact-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal) ease;
  cursor: pointer;
}

.contact-card:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(139, 92, 246, 0.3);
  background: var(--color-card-hover);
}

.contact-card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.icon-wechat {
  background: linear-gradient(135deg, rgba(7, 193, 96, 0.3) 0%, rgba(7, 193, 96, 0.1) 100%);
  box-shadow: 0 0 30px rgba(7, 193, 96, 0.3);
}

.icon-github {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(139, 92, 246, 0.1) 100%);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.3);
}

.icon-email {
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.3) 0%, rgba(244, 114, 182, 0.1) 100%);
  box-shadow: 0 0 30px rgba(244, 114, 182, 0.3);
}

.contact-card-info {
  flex: 1;
}

.contact-card-title {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 4px;
}

.contact-card-value {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-card-hint {
  font-size: 0.8rem;
  color: var(--color-primary-light);
  opacity: 0;
  transform: translateY(-5px);
  transition: all var(--transition-normal) ease;
}

.contact-card:hover .contact-card-hint {
  opacity: 1;
  transform: translateY(0);
}

/* 邮件表单 */
.contact-form-wrapper {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.form-title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.form-input,
.form-textarea {
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-normal) ease;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal) ease;
  position: relative;
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}

.form-submit:active {
  transform: translateY(0);
}

.form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-loading {
  display: none;
}

.form-submit.loading .btn-text {
  display: none;
}

.form-submit.loading .btn-loading {
  display: inline;
}

/* 表单状态提示 */
.form-status {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 0.9rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(34, 197, 94, 0.2);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22C55E;
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #EF4444;
}

/* 微信弹窗 */
.wechat-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal) ease;
}

.wechat-modal.active {
  opacity: 1;
  visibility: visible;
}

.wechat-modal-content {
  background: var(--color-background-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  max-width: 360px;
  width: 90%;
  transform: scale(0.9);
  transition: transform var(--transition-normal) ease;
}

.wechat-modal.active .wechat-modal-content {
  transform: scale(1);
}

.wechat-modal-title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.wechat-id {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-md);
  user-select: all;
}

.wechat-modal-hint {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.wechat-modal-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

.modal-btn {
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal) ease;
  border: none;
}

.modal-btn-primary {
  background: var(--gradient-primary);
  color: white;
}

.modal-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(139, 92, 246, 0.4);
}

.modal-btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-secondary);
  border: 1px solid var(--glass-border);
}

.modal-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.copy-success {
  color: #22C55E !important;
}