/* 全局样式文件 - 现代极简主义时尚展示平台 */

/* ==================== 重置与基础样式 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 配色方案 */
  --color-ivory: #FFFFF0;
  --color-light-gray: #F5F5F5;
  --color-terracotta: #E3B6A4;
  --color-silver: #C0C0C0;
  --color-dark-charcoal: #333333;
  --color-graphite: #666666;
  
  /* 字体设置 */
  --font-title-en: 'Playfair Display', serif;
  --font-title-zh: 'Noto Serif SC', serif;
  --font-body: 'Noto Sans SC', sans-serif;
  
  /* 间距系统 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 过渡效果 */
  --transition-base: 0.3s ease-in-out;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-ivory);
  color: var(--color-dark-charcoal);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

/* ==================== 导航栏样式 ==================== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(255, 255, 240, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid rgba(192, 192, 192, 0.2);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  position: relative;
  padding-bottom: 0.25rem;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1px;
  background-color: var(--color-terracotta);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

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

.nav-link.active {
  border-bottom: 2px solid var(--color-terracotta);
}

/* ==================== 页面布局 ==================== */
main {
  margin-top: 70px;
  min-height: calc(100vh - 120px);
}

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

.section {
  padding: var(--spacing-xl) 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.fade-in {
  opacity: 1;
  transform: translateY(0);
}

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

.slide {
  position: absolute;
  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;
  object-position: center;
}

.slide-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--color-ivory);
  background: rgba(51, 51, 51, 0.3);
  padding: var(--spacing-md) var(--spacing-lg);
  backdrop-filter: blur(5px);
}

.slide-overlay h1 {
  font-family: var(--font-title-zh);
  font-size: 3rem;
  font-weight: 500;
  letter-spacing: 0.2em;
}

/* ==================== 内容区块 ==================== */
.content-block {
  margin-bottom: var(--spacing-xl);
}

.block-title {
  font-family: var(--font-title-zh);
  font-size: 2.5rem;
  font-weight: 500;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.15em;
  color: var(--color-dark-charcoal);
}

.block-subtitle {
  font-size: 1rem;
  text-align: center;
  color: var(--color-graphite);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.1em;
}

/* ==================== 网格布局 ==================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

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

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

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

/* ==================== 臻选系列页面 ==================== */
.theme-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  overflow-x: auto;
  padding: var(--spacing-sm) 0;
}

.theme-card {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-light-gray);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  letter-spacing: 0.1em;
}

.theme-card:hover,
.theme-card.active {
  background-color: var(--color-terracotta);
  color: var(--color-ivory);
  border-color: var(--color-terracotta);
}

.theme-section {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--color-light-gray);
}

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

.theme-title {
  font-family: var(--font-title-zh);
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.15em;
}

/* ==================== 匠心工艺页面 ==================== */
.narrative-section {
  position: relative;
  padding: var(--spacing-xl) 0;
  text-align: center;
  background-size: cover;
  background-position: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.narrative-overlay {
  background: rgba(255, 255, 240, 0.85);
  padding: var(--spacing-lg);
  max-width: 800px;
}

.narrative-title {
  font-family: var(--font-title-zh);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.2em;
}

.narrative-text {
  font-size: 1.1rem;
  line-height: 2;
  color: var(--color-graphite);
  letter-spacing: 0.05em;
}

/* ==================== 时间轴设计 ==================== */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: var(--spacing-xl) auto;
  padding: var(--spacing-md) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-silver);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
}

.timeline-content {
  width: 45%;
  padding: var(--spacing-md);
  background-color: var(--color-light-gray);
  border-radius: 8px;
}

.timeline-point {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 20px;
  background-color: var(--color-terracotta);
  border: 4px solid var(--color-ivory);
  border-radius: 50%;
  transform: translateX(-50%);
}

.timeline-title {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.1em;
}

/* ==================== 页脚样式 ==================== */
footer {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--color-light-gray);
  color: var(--color-graphite);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1199px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  :root {
    font-size: 14px;
  }
  
  .nav-container {
    gap: var(--spacing-sm);
  }
  
  .slide-overlay h1 {
    font-size: 2rem;
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .theme-nav {
    flex-wrap: nowrap;
    justify-content: flex-start;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    flex-direction: row !important;
    padding-left: 60px;
  }
  
  .timeline-content {
    width: 100%;
  }
  
  .timeline-point {
    left: 20px;
  }
}

/* ==================== 字体引入 ==================== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600&family=Noto+Sans+SC:wght@300;400;500&display=swap');