/* 
 * 极简主义时尚女装网站全局样式
 * 遵循现代CSS最佳实践，响应式设计
 */

:root {
  /* 设计令牌 */
  --font-primary: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans CN", -apple-system, BlinkMacSystemFont, sans-serif;
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-light: #999999;
  --color-border: #eeeeee;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  /* 动画 */
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fade: opacity 0.8s ease-out;
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-smooth);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 工具类 */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.text-center { text-align: center; }
.fade-in-element {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s ease, transform 1s ease;
}
.fade-in-element.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 导航栏 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid transparent;
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  display: flex;
  justify-content: center; /* 极简风格，导航居中 */
  align-items: center;
  position: relative;
}

.site-title {
  position: absolute;
  left: var(--spacing-sm);
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: none; /* 首页可能隐藏，根据设计调整，这里默认桌面端可以显示 */
}

@media (min-width: 768px) {
  .site-title { display: block; }
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
}

.main-nav a {
  font-size: 0.9rem;
  letter-spacing: 1px;
  color: var(--color-text-secondary);
  position: relative;
  padding-bottom: 4px;
}

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

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1px;
  background-color: var(--color-text);
  transition: width 0.3s ease, left 0.3s ease;
}

.main-nav a:hover::after, .main-nav a.active::after {
  width: 100%;
  left: 0;
}

/* 页面一：首页 */
/* 1. 全屏轮播区 */
.hero-section {
  height: 100vh;
  width: 100%;
  position: relative;
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.hero-slider {
  height: 100%;
  width: 100%;
  position: relative;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-slide.active {
  opacity: 1;
  z-index: 1;
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  text-align: center;
  color: #fff;
  width: 90%;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 4px;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* 2. 首屏下方文字区 */
.intro-section {
  padding: var(--spacing-xl) var(--spacing-sm);
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.intro-subtitle {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  position: relative;
  display: inline-block;
}

.intro-subtitle::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-text-secondary);
  margin: 10px auto 0;
}

.intro-text {
  font-size: 1.1rem;
  line-height: 2;
  color: var(--color-text);
  font-weight: 300;
}

/* 3. 中部视觉区 */
.visual-split-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xs);
  padding: 0 var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
  .visual-split-section {
    grid-template-columns: 1fr 1fr;
    height: 80vh;
  }
}

.split-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: var(--transition-smooth);
}

.split-image:hover {
  filter: grayscale(0%);
}

/* 4. 结束语引导区 */
.end-nav-section {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-xl);
}

.end-nav-title {
  font-size: 1.5rem;
  font-weight: 300;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 2px;
}

.nav-buttons-container {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.visual-btn {
  display: block;
  width: 300px;
  height: 200px;
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.visual-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.visual-btn span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 1.2rem;
  letter-spacing: 2px;
  z-index: 2;
  text-shadow: 0 2px 5px rgba(0,0,0,0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.visual-btn:hover img {
  transform: scale(1.05);
}

.visual-btn:hover span {
  opacity: 1;
}

/* 页面二：系列 */
.series-page {
  padding-top: calc(60px + var(--spacing-lg));
}

.series-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.page-title {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  padding: 0 var(--spacing-sm) var(--spacing-xl);
}

@media (min-width: 768px) {
  .series-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

.series-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
  cursor: pointer;
}

.series-img-wrapper {
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.series-img-wrapper img {
  width: 100%;
  height: auto;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform 0.8s ease;
  filter: brightness(0.95);
}

.series-item:hover .series-img-wrapper img {
  transform: scale(1.03);
  filter: brightness(1);
}

.series-info {
  text-align: left;
  padding-top: var(--spacing-xs);
}

.series-name {
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.series-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 300;
  line-height: 1.6;
}

/* 图片查看模态框 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.98);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  max-width: 90%;
  max-height: 90vh;
}

.modal-content img {
  max-height: 90vh;
  width: auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.modal-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  font-size: 2rem;
  cursor: pointer;
  color: var(--color-text);
  font-weight: 300;
  transition: transform 0.3s ease;
}

.modal-close:hover {
  transform: rotate(90deg);
}

/* 页面三：故事 */
.story-page {
  padding-top: 60px;
}

.story-hero {
  height: 80vh;
  width: 100%;
  overflow: hidden;
  position: relative;
  margin-bottom: var(--spacing-xl);
}

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

.story-content {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.story-article {
  margin-bottom: var(--spacing-xl);
}

.story-title {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--spacing-md);
  letter-spacing: 2px;
  text-align: center;
}

.story-text {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  text-align: justify;
}

.story-image-full {
  width: 100%;
  margin: var(--spacing-lg) 0;
}

.story-image-full img {
  width: 100%;
  border-radius: 2px;
}

.story-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xs);
  margin: var(--spacing-xl) 0;
}

.story-gallery img {
  height: 200px;
  width: 100%;
  object-fit: cover;
}

.story-end {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-sm);
  background-color: var(--color-bg);
}

/* 页脚 */
.site-footer {
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid transparent; /* 保持干净 */
}

.site-footer p {
  font-size: 0.75rem;
  color: #cccccc;
  letter-spacing: 1px;
}

/* 移动端适配 */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 4rem;
    --spacing-lg: 2.5rem;
    --spacing-md: 1.5rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .visual-split-section {
    grid-template-columns: 1fr;
  }
  
  .nav-buttons-container {
    flex-direction: column;
    align-items: center;
  }
  
  .visual-btn {
    width: 100%;
    max-width: 400px;
  }
  
  .story-gallery {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .story-gallery img {
    height: auto;
    aspect-ratio: 3/2;
  }
}