/* 全局设计令牌 */
:root {
  /* 颜色系统 */
  --color-primary: #F5F5F0;      /* 米白色 */
  --color-secondary: #E8E8E3;    /* 浅灰色 */
  --color-accent: #D4C5B9;       /* 燕麦色 */
  --color-sand: #E6D5C3;         /* 沙色 */
  --color-sage: #8A9A8C;         /* 灰绿色 */
  --color-fog: #9CAAB8;          /* 雾霾蓝 */
  --color-rose: #D4A5A5;         /* 干枯玫瑰粉 */
  --color-text: #2C2C2C;         /* 主文字色 */
  --color-light-text: #666666;   /* 次要文字色 */
  
  /* 间距系统 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  
  /* 圆角 */
  --radius-sm: 0.125rem;
  --radius-md: 0.25rem;
  --radius-lg: 0.5rem;
  
  /* 阴影 */
  --shadow-subtle: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-soft: 0 4px 6px rgba(0, 0, 0, 0.07);
  
  /* 字体 */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
}

/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 字体设置 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-weight: var(--font-weight-light);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-primary);
  overflow-x: hidden;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: var(--radius-md);
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* 通用动画类 */
.animate-fadeIn {
  animation: fadeIn 0.8s ease-out forwards;
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease-out forwards;
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s ease-out forwards;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* 图片悬停效果 */
.image-hover {
  transition: all 0.3s ease;
  cursor: pointer;
}

.image-hover:hover {
  transform: scale(1.03);
  filter: brightness(1.05);
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.navbar-transparent {
  background-color: transparent;
}

.navbar-solid {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-subtle);
}

/* 轮播图样式 */
.carousel-container {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.carousel-slide.active {
  opacity: 1;
}

/* 网格布局样式 */
.grid-gallery {
  display: grid;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
}

.grid-gallery.masonry {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  grid-auto-rows: auto;
}

/* 卡片样式 */
.card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

/* 文字样式 */
.text-hero {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: var(--font-weight-light);
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.text-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  color: var(--color-light-text);
  font-weight: var(--font-weight-light);
}

.text-caption {
  font-size: 0.875rem;
  color: var(--color-light-text);
  letter-spacing: 0.025em;
}

/* 按钮样式 */
.btn-primary {
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-text);
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-normal);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--color-accent);
  transform: translateY(-1px);
}

/* 页面切换效果 */
.page-transition {
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.page-transition.active {
  opacity: 1;
}

/* 响应式断点 */
@media (max-width: 768px) {
  .grid-gallery {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
  
  .navbar {
    padding: var(--spacing-sm);
  }
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  margin: 2px 0;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
}

/* 加载状态 */
.loading {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.loading.loaded {
  opacity: 1;
}

/* 懒加载占位符 */
.lazy-placeholder {
  background: linear-gradient(90deg, var(--color-secondary) 0%, var(--color-accent) 50%, var(--color-secondary) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}