/* 全局样式文件 - 高质量时尚女装网站 */

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

/* 全局变量定义 */
:root {
  --color-primary: #2a2a2a;
  --color-secondary: #6b6b6b;
  --color-background: #fafafa;
  --color-accent: #d4c4b0;
  --color-white: #ffffff;
  --font-sans: 'Noto Sans SC', sans-serif;
  --font-serif: 'Noto Serif SC', serif;
  --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

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

body {
  font-family: var(--font-sans);
  font-weight: 300;
  color: var(--color-primary);
  background-color: var(--color-background);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 导航栏样式 */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: center;
  gap: 3rem;
  border-bottom: 1px solid rgba(42, 42, 42, 0.05);
}

nav a {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  transition: var(--transition-smooth);
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: var(--transition-smooth);
  transform: translateX(-50%);
}

nav a:hover::after {
  width: 100%;
}

/* 主容器 */
main {
  margin-top: 80px;
}

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

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

.slide.active {
  opacity: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.9);
}

.slide-caption {
  position: absolute;
  bottom: 15%;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 2rem;
  text-align: center;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  letter-spacing: 0.05em;
  padding: 0 2rem;
}

/* 轮播控制按钮 */
.slider-controls {
  position: absolute;
  bottom: 8%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1rem;
  z-index: 10;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.slider-dot.active {
  background: var(--color-white);
  width: 30px;
  border-radius: 5px;
}

/* 内容区域 */
.content-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.section-subtitle {
  text-align: center;
  color: var(--color-secondary);
  font-size: 1rem;
  line-height: 2;
  max-width: 800px;
  margin: 0 auto 4rem;
}

/* 网格布局 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.grid-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 3/4;
}

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

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

.grid-item-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: var(--color-white);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  transform: translateY(100%);
  transition: var(--transition-smooth);
}

.grid-item:hover .grid-item-caption {
  transform: translateY(0);
}

/* 系列模块 */
.series-section {
  padding: 4rem 0;
  border-bottom: 1px solid rgba(42, 42, 42, 0.1);
}

.series-header {
  text-align: center;
  margin-bottom: 3rem;
}

.series-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.series-desc {
  color: var(--color-secondary);
  font-size: 1rem;
}

/* 视觉档案网格 */
.visual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
}

.visual-item {
  aspect-ratio: 1;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

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

.visual-item:hover img {
  transform: scale(1.08);
}

/* 页脚 */
footer {
  text-align: center;
  padding: 3rem 0;
  color: var(--color-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  border-top: 1px solid rgba(42, 42, 42, 0.05);
}

/* 响应式设计 */
@media (max-width: 768px) {
  nav {
    padding: 1rem 1.5rem;
    gap: 1.5rem;
  }

  nav a {
    font-size: 0.85rem;
  }

  .slide-caption {
    font-size: 1.5rem;
    bottom: 20%;
  }

  .content-section {
    padding: 4rem 1.5rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .section-subtitle {
    font-size: 0.9rem;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .series-title {
    font-size: 1.5rem;
  }

  .visual-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .slide-caption {
    font-size: 1.2rem;
  }

  .section-title {
    font-size: 1.3rem;
  }

  .grid-item-caption {
    font-size: 0.85rem;
    padding: 1.5rem;
  }
}

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

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

/* 懒加载占位 */
.lazy-placeholder {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

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