/* ================================
   全局样式 - 时尚女装展示网站
   ================================ */

/* 重置与基础设置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-pearl: #FFFFFF;
  --color-grey: #F5F5F5;
  --color-charcoal: #1A1A1A;
  --color-terracotta: #E3B7A0;
  --color-mist-blue: #9BB7C9;
  --color-oatmeal: #D8CFC4;
  --color-accent: #8C3A3A;
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  background: var(--color-pearl);
  color: var(--color-charcoal);
  line-height: 1.8;
  overflow-x: hidden;
}

/* 导航栏 */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(26, 26, 26, 0.08);
  z-index: 1000;
  padding: 1.5rem 5%;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-charcoal);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav-menu a {
  color: var(--color-charcoal);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  transition: var(--transition-smooth);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: var(--transition-smooth);
}

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

/* 主内容区域 */
.main-content {
  padding-top: 80px;
  min-height: 100vh;
}

/* 轮播图区域 */
.hero-section {
  height: 85vh;
  position: relative;
  overflow: hidden;
  background: var(--color-grey);
}

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

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

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.92);
}

.hero-overlay {
  position: absolute;
  bottom: 10%;
  left: 5%;
  color: var(--color-pearl);
  max-width: 500px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.hero-overlay h1 {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.hero-overlay p {
  font-size: 1.1rem;
  line-height: 1.8;
  opacity: 0.95;
}

/* 精选系列 */
.featured-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 8rem 5%;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 4rem;
  color: var(--color-charcoal);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
}

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

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

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

.featured-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.85), transparent);
  padding: 2.5rem 2rem;
  color: var(--color-pearl);
  transform: translateY(0);
  transition: var(--transition-smooth);
}

.featured-item:hover .featured-overlay {
  transform: translateY(-10px);
}

.featured-overlay h3 {
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
}

.featured-overlay p {
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.9;
}

/* 理念文字区 */
.philosophy-section {
  background: var(--color-grey);
  padding: 6rem 5%;
  text-align: center;
}

.philosophy-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.15rem;
  line-height: 2;
  color: var(--color-charcoal);
  letter-spacing: 0.03em;
}

/* 网格展示 */
.collection-grid {
  max-width: 1400px;
  margin: 0 auto;
  padding: 5rem 5%;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

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

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

.collection-item:hover img {
  transform: scale(1.08);
  filter: brightness(0.88);
}

/* 故事卡片 */
.story-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 5%;
  display: flex;
  flex-direction: column;
  gap: 5rem;
}

.story-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.story-card:nth-child(even) {
  direction: rtl;
}

.story-card:nth-child(even) > * {
  direction: ltr;
}

.story-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.story-text h3 {
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  color: var(--color-charcoal);
}

.story-text p {
  font-size: 1.05rem;
  line-height: 2;
  color: rgba(26, 26, 26, 0.85);
}

/* 页脚 */
.site-footer {
  text-align: center;
  padding: 3rem 0;
  background: var(--color-charcoal);
  color: var(--color-pearl);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    gap: 1.5rem;
    font-size: 0.85rem;
  }

  .hero-overlay h1 {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

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

  .story-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .story-card:nth-child(even) {
    direction: ltr;
  }
}

@media (max-width: 480px) {
  .nav-header {
    padding: 1rem 4%;
  }

  .nav-logo {
    font-size: 1.1rem;
  }

  .nav-menu {
    gap: 1rem;
  }

  .hero-overlay {
    left: 4%;
    bottom: 8%;
  }

  .featured-section,
  .collection-grid,
  .story-grid {
    padding-left: 4%;
    padding-right: 4%;
  }
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 选中文本样式 */
::selection {
  background: var(--color-terracotta);
  color: var(--color-pearl);
}