/* 全局样式 - 风尚叙事 */

/* CSS变量定义 - 设计令牌 */
:root {
  /* 主色调 */
  --oatmeal-white: #F5F0E6;
  --sandstone-gray: #D3CEC4;
  --misty-blue: #A8C3D0;
  
  /* 辅助色 */
  --terracotta-pink: #D4A59A;
  --foliage-green: #7A9F6E;
  
  /* 字体 */
  --font-heading: 'Source Han Serif SC', 'Noto Serif SC', serif;
  --font-body: 'HarmonyOS Sans SC', 'PingFang SC', sans-serif;
  
  /* 间距系统 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* 阴影 */
  --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.16);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--oatmeal-white);
  color: #333;
  line-height: 1.6;
  overflow-x: hidden;
}

/* 字体引入 */
@font-face {
  font-family: 'Source Han Serif SC';
  src: url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;500;600&display=swap');
}

@font-face {
  font-family: 'HarmonyOS Sans SC';
  src: local('PingFang SC'), local('Microsoft YaHei');
}

/* 排版系统 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.3;
}

h1 {
  font-size: 3.5rem;
  letter-spacing: 0.05em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: 0.03em;
}

h3 {
  font-size: 1.875rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
  color: #4a4a4a;
}

/* 链接样式 */
a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--misty-blue);
}

/* 图片优化 */
img {
  max-width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

/* 图片悬停效果 */
img:hover {
  transform: scale(1.05);
}

/* 容器 */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(245, 240, 230, 0.85);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(211, 206, 196, 0.3);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--misty-blue);
  transition: width 0.3s ease;
}

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

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

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
}

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

.carousel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-overlay {
  position: absolute;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.carousel-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.carousel-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
}

/* 四季穿搭专栏 */
.seasons {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(to bottom, var(--oatmeal-white), var(--sandstone-gray));
}

.seasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.season-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.season-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.season-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.season-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: white;
}

.season-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.season-desc {
  font-size: 0.875rem;
  opacity: 0.9;
}

/* 编辑推荐 */
.editorial {
  padding: var(--spacing-xl) 0;
  background-color: var(--oatmeal-white);
}

.editorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.editorial-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.editorial-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-strong);
}

.editorial-image {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

.editorial-content {
  padding: var(--spacing-md);
}

.editorial-tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--misty-blue);
  color: white;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.editorial-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.editorial-excerpt {
  font-size: 0.875rem;
  color: #666;
  line-height: 1.6;
}

/* 页脚 */
footer {
  background-color: var(--sandstone-gray);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.footer-content {
  color: #666;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .carousel-title {
    font-size: 2rem;
  }
  
  .nav-menu {
    gap: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .carousel {
    height: 70vh;
  }
  
  .carousel-title {
    font-size: 1.5rem;
  }
  
  .carousel-overlay {
    bottom: var(--spacing-md);
    left: var(--spacing-md);
  }
  
  .nav-menu {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav-link {
    font-size: 0.75rem;
  }
  
  .seasons-grid,
  .editorial-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .nav-content {
    padding: 0 var(--spacing-sm);
  }
  
  .carousel {
    height: 60vh;
  }
}

/* 动画增强 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

/* 懒加载图片 */
.lazy-image {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-image.loaded {
  opacity: 1;
}