/* ========================================
   全局样式文件 - 高质量时尚女装网站
   配色：象牙白/浅灰为主，点缀雾霾蓝、沙色、陶土粉
   字体：思源宋体（标题）+ 思源黑体（正文）
======================================== */

/* CSS变量定义 */
:root {
  --color-ivory: #faf9f6;
  --color-light-gray: #e8e8e8;
  --color-mist-blue: #9db4c0;
  --color-sand: #c9a588;
  --color-terracotta: #d4a5a5;
  --color-dark-text: #2a2a2a;
  --color-light-text: #6a6a6a;
  
  --font-title: 'Noto Serif SC', serif;
  --font-body: 'Noto Sans SC', sans-serif;
  --font-en: 'Helvetica Neue', Arial, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-ivory);
  color: var(--color-dark-text);
  line-height: 1.8;
  overflow-x: hidden;
}

/* 字体导入 */
@import url('https://fonts.loli.net/css2?family=Noto+Serif+SC:wght@400;600;700&family=Noto+Sans+SC:wght@300;400;500&display=swap');

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(250, 249, 246, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-light-gray);
  transition: var(--transition-smooth);
}

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

.logo {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-dark-text);
  text-decoration: none;
  letter-spacing: 0.1em;
}

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

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-light-text);
  text-decoration: none;
  position: relative;
  transition: var(--transition-smooth);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-dark-text);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-mist-blue);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* 主内容区 */
main {
  margin-top: 70px;
}

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

/* 轮播图区域 */
.hero-slider {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

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

.slide.active {
  opacity: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.85);
}

.slide-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  z-index: 10;
}

.slide-content h1 {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 50px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 20px;
  cursor: pointer;
}

.scroll-indicator::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 3px;
  animation: scroll-down 2s infinite;
}

@keyframes scroll-down {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(15px); opacity: 0.3; }
}

/* 内容区块 */
.section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-dark-text);
  letter-spacing: 0.05em;
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: 1.1rem;
  text-align: center;
  color: var(--color-light-text);
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
}

.section-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  line-height: 2;
  color: var(--color-light-text);
}

/* 季节系列网格 */
.season-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.season-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.season-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.season-item img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: var(--transition-smooth);
  display: block;
}

.season-item:hover img {
  transform: scale(1.05);
}

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

.season-overlay h3 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.season-overlay p {
  font-size: 0.9rem;
  font-weight: 300;
}

/* 编辑精选 */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.featured-item {
  text-align: center;
}

.featured-item img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: var(--spacing-sm);
  transition: var(--transition-smooth);
}

.featured-item:hover img {
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.featured-item h4 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-dark-text);
}

.featured-item p {
  color: var(--color-light-text);
  font-size: 0.95rem;
}

/* 风格卡片 */
.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.style-card {
  padding: var(--spacing-md);
}

.style-header {
  margin-bottom: var(--spacing-md);
}

.style-header h3 {
  font-family: var(--font-title);
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-dark-text);
}

.style-tags {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.tag {
  padding: 0.3rem 0.8rem;
  background-color: var(--color-light-gray);
  color: var(--color-light-text);
  font-size: 0.85rem;
  border-radius: 20px;
}

.style-images {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.style-images img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 4px;
}

.style-description {
  line-height: 2;
  color: var(--color-light-text);
}

/* 工艺细节 */
.craft-section {
  margin-bottom: var(--spacing-xl);
}

.craft-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  margin-top: var(--spacing-md);
}

.craft-text {
  line-height: 2;
  color: var(--color-light-text);
}

.craft-images {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.craft-images img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 4px;
}

/* 页脚 */
.footer {
  background-color: var(--color-dark-text);
  color: var(--color-light-gray);
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-title {
  font-family: var(--font-title);
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.1em;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--color-light-gray);
  margin-bottom: var(--spacing-md);
  opacity: 0.8;
}

.footer-divider {
  width: 50px;
  height: 1px;
  background-color: var(--color-light-gray);
  margin: var(--spacing-md) auto;
  opacity: 0.5;
}

.footer-copyright {
  font-size: 0.9rem;
  opacity: 0.7;
}

/* 图片懒加载效果 */
.lazy-image {
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
  
  .style-grid {
    grid-template-columns: 1fr;
  }
  
  .craft-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .navbar-container {
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
  }
  
  .nav-links {
    gap: var(--spacing-md);
    font-size: 0.9rem;
  }
  
  .slide-content h1 {
    font-size: 2rem;
  }
  
  .season-grid,
  .featured-grid {
    grid-template-columns: 1fr;
  }
  
  .style-images {
    grid-template-columns: 1fr;
  }
  
  .craft-images {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .hero-slider {
    height: 70vh;
  }
  
  .nav-links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}