/* 全局样式 - 极简主义服装展示网站 */
:root {
  --color-black: #000000;
  --color-gray-dark: #333333;
  --color-gray: #666666;
  --color-gray-light: #999999;
  --color-gray-lighter: #e8e8e3;
  --color-oat: #d4c4b0;
  --color-cream: #f5f5f0;
  --color-white: #ffffff;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  --border-radius-sm: 0.25rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
  
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--color-cream);
  color: var(--color-gray-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航栏 */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-gray-lighter);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
}

nav ul {
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
  gap: var(--spacing-2xl);
}

nav a {
  text-decoration: none;
  color: var(--color-gray-dark);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: var(--transition);
  position: relative;
}

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

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

/* 主要内容 */
main {
  margin-top: 80px;
  min-height: calc(100vh - 80px - 60px);
}

/* 首页轮播 */
.hero {
  height: calc(100vh - 80px);
  position: relative;
  overflow: hidden;
}

.slider {
  height: 100%;
  position: relative;
}

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

.slide.active {
  opacity: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
  font-size: var(--font-size-lg);
  font-weight: 300;
  opacity: 0.9;
}

/* 网格布局 */
.grid {
  display: grid;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-item {
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.grid-item:hover {
  transform: translateY(-5px);
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

/* 系列页 */
.collection-header {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.collection-header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 300;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.05em;
}

.card {
  background: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.card-content {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 300;
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

/* 详情页 */
.detail-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.detail-images {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.main-image {
  width: 100%;
  height: 600px;
  object-fit: cover;
}

.thumbnail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.thumbnail {
  width: 100%;
  height: 180px;
  object-fit: cover;
  cursor: pointer;
  opacity: 0.7;
  transition: var(--transition);
}

.thumbnail:hover,
.thumbnail.active {
  opacity: 1;
}

.detail-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.detail-title {
  font-size: var(--font-size-3xl);
  font-weight: 300;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.05em;
}

.detail-description {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--color-gray);
  margin-bottom: var(--spacing-xl);
}

/* 型录页 */
.lookbook {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

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

.lookbook-item {
  position: relative;
  overflow: hidden;
}

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

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

.lookbook-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  padding: var(--spacing-xl);
  color: var(--color-white);
  transform: translateY(100%);
  transition: var(--transition);
}

.lookbook-item:hover .lookbook-overlay {
  transform: translateY(0);
}

/* 关于页 */
.about {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-lg);
  text-align: center;
}

.about h1 {
  font-size: var(--font-size-3xl);
  font-weight: 300;
  margin-bottom: var(--spacing-xl);
  letter-spacing: 0.05em;
}

.about-content {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--color-gray);
}

/* 页脚 */
footer {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  text-align: center;
  border-top: 1px solid var(--color-gray-lighter);
  margin-top: var(--spacing-3xl);
}

footer p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  letter-spacing: 0.05em;
}

/* 响应式设计 */
@media (max-width: 768px) {
  nav ul {
    gap: var(--spacing-lg);
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .detail-images {
    grid-template-columns: 1fr;
  }
  
  .main-image {
    height: 400px;
  }
  
  .thumbnail-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .lookbook-grid {
    grid-template-columns: 1fr;
  }
  
  .collection-header,
  .detail-content,
  .about {
    padding: var(--spacing-xl) var(--spacing-md);
  }
}

@media (max-width: 480px) {
  nav ul {
    gap: var(--spacing-md);
  }
  
  nav a {
    font-size: var(--font-size-xs);
  }
  
  .hero h1 {
    font-size: var(--font-size-2xl);
  }
  
  .thumbnail-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}