/* ============================================
   自然清新风格 - Natural & Fresh Design
   柔和色彩、圆润设计、温暖友好
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700&family=Poppins:wght@400;500;600;700&display=swap');

/* CSS Variables */
:root {
  /* 柔和的自然色彩 */
  --primary-color: #5CB85C;
  --primary-light: #8BC34A;
  --primary-dark: #388E3C;
  --secondary-color: #42A5F5;
  --accent-color: #FF9800;
  --success-color: #4CAF50;

  /* 柔和的背景色 */
  --bg-primary: #FAFAFA;
  --bg-secondary: #F5F5F5;
  --bg-card: rgba(255, 255, 255, 0.95);

  /* 文字颜色 */
  --text-primary: #2C3E50;
  --text-secondary: #546E7A;
  --text-muted: #90A4AE;
  --text-light: #FFFFFF;

  /* 柔和的边框和阴影 */
  --border-color: rgba(92, 184, 92, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);

  /* 圆润的边角 */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --radius-full: 50%;

  /* 平滑的过渡 */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  min-height: 100vh;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

/* 动态背景容器 */
.bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  transition: background-image 0.5s ease;
}

.bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
}

/* 温暖的卡片 */
.warm-card {
  background: rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 2px solid rgba(255, 255, 255, 0.4);
  transition: var(--transition-smooth);
}

.warm-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

/* 主容器 */
.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 头像样式 */
.avatar-container {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto 30px;
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 5px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 8px 24px rgba(92, 184, 92, 0.3);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.avatar-img:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 32px rgba(92, 184, 92, 0.4);
}

.avatar-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, var(--accent-color) 0%, #FFB74D 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 4px 12px rgba(255, 152, 0, 0.3);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* 标题样式 */
.title {
  font-family: 'Poppins', sans-serif;
  font-size: 48px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 15px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.subtitle {
  font-size: 20px;
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-weight: 500;
}

/* 描述文本 */
.description {
  text-align: center;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 40px;
  padding: 0 20px;
}

.description strong {
  font-weight: 600;
  color: var(--primary-dark);
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.nav-link {
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
}

.nav-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(92, 184, 92, 0.3);
}

/* 社交媒体图标 */
.social-menu {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.social-link {
  width: 52px;
  height: 52px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-bounce);
  font-size: 20px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.social-link.round-social {
  border-radius: 50%;
}

.social-link img {
  width: 24px;
  height: 24px;
}

.social-link:hover {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 6px 20px rgba(92, 184, 92, 0.4);
}

/* 分隔线 */
.divider {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  margin: 30px auto;
  border-radius: 2px;
}

/* 按钮样式 */
.btn {
  padding: 14px 35px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 12px rgba(92, 184, 92, 0.3);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(92, 184, 92, 0.5);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.8);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-sm);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  box-shadow: 0 6px 20px rgba(92, 184, 92, 0.5);
}

/* 页脚 */
.footer {
  text-align: center;
  margin-top: 50px;
  color: var(--text-muted);
  font-size: 14px;
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.footer a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 20px;
  right: 20px;
  width: 54px;
  height: 54px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  z-index: 1000;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-md);
  border: none;
}

.mobile-menu-btn:hover {
  background: var(--primary-color);
  color: white;
  transform: rotate(180deg);
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 999;
  transform: translateX(100%);
  transition: transform 0.4s ease;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu .nav-link {
  padding: 15px 40px;
  font-size: 18px;
}

.mobile-menu .social-link {
  width: 60px;
  height: 60px;
  font-size: 24px;
  border-radius: var(--radius-sm);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .main-container {
    padding: 20px 15px;
  }

  .title {
    font-size: 36px;
  }

  .subtitle {
    font-size: 18px;
  }

  .avatar-container {
    width: 140px;
    height: 140px;
  }

  .nav-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .social-menu {
    display: none;
  }

  .description {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .title {
    font-size: 28px;
  }

  .subtitle {
    font-size: 16px;
  }

  .avatar-container {
    width: 120px;
    height: 120px;
  }

  .main-container {
    padding: 15px 10px;
  }
}

/* 动画类 */
.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-up {
  animation: slideUp 0.6s ease forwards;
}

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

.scale-in {
  animation: scaleIn 0.5s ease forwards;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--secondary-color) 100%);
}

/* 选择文本样式 */
::selection {
  background: rgba(92, 184, 92, 0.2);
  color: var(--text-primary);
}