/* 
 * 全局样式表
 * 项目：现代时尚女装展示网站
 * 设计原则：极简、现代、高级感
 * 配色方案：浅米白(#F8F5F2) + 深炭灰(#2A2A2A) + 陶土粉(#C17C74)
 */

/* =========================================
   1. 变量定义与基础设置 (Variables & Base)
   ========================================= */
:root {
  /* 调色板 */
  --color-bg-main: #F8F5F2;
  --color-text-main: #2A2A2A;
  --color-accent: #C17C74;
  --color-secondary: #8A9BA7;
  --color-light-gray: #E0E0E0;
  --color-white: #FFFFFF;
  
  /* 字体 */
  --font-main: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Source Han Serif CN", "Songti SC", serif;
  --font-en: "Montserrat", sans-serif;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* 过渡 */
  --transition-fast: 0.3s ease;
  --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-main);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  opacity: 0;
  animation: fadeInPage 0.8s ease-out forwards;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

/* 页面淡入动画 */
@keyframes fadeInPage {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   2. 排版样式 (Typography)
   ========================================= */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; line-height: 1.2; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

.text-serif { font-family: var(--font-serif); }
.text-en { font-family: var(--font-en); }
.text-accent { color: var(--color-accent); }

/* =========================================
   3. 布局组件 (Layout Components)
   ========================================= */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: background-color var(--transition-fast), padding var(--transition-fast), box-shadow var(--transition-fast);
}

.navbar.scrolled {
  background-color: rgba(248, 245, 242, 0.95);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  padding: var(--spacing-xs) 0;
  backdrop-filter: blur(5px);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 0.1em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  position: relative;
  padding-bottom: 4px;
}

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

.nav-link:hover {
  color: var(--color-accent);
}

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

/* 移动端汉堡菜单 */
.hamburger {
  display: none;
  cursor: pointer;
  flex-direction: column;
  gap: 6px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-main);
  transition: var(--transition-fast);
}

/* 页脚 */
.footer {
  background-color: var(--color-text-main);
  color: var(--color-bg-main);
  padding: var(--spacing-md) 0;
  text-align: center;
  margin-top: var(--spacing-xl);
}

.footer-text {
  font-family: var(--font-en);
  font-size: 0.8rem;
  opacity: 0.8;
  letter-spacing: 0.1em;
}

/* =========================================
   4. 首页特定样式 (Homepage)
   ========================================= */
/* 英雄区域 */
.hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.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;
}

.slide.active {
  opacity: 1;
}

/* 遮罩层增强可读性 */
.overlay {
  background: rgba(0, 0, 0, 0.2);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-content {
  color: var(--color-white);
  z-index: 10;
  max-width: 800px;
  padding: 0 var(--spacing-sm);
  animation: fadeUp 1s ease-out 0.5s both;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  animation: bounce 2s infinite;
  font-size: 2rem;
  cursor: pointer;
  z-index: 10;
}

/* 专题区域 */
.section {
  padding: var(--spacing-xl) 0;
}

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

.section-title {
  font-size: 2.2rem;
  color: var(--color-text-main);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background-color: var(--color-accent);
  margin: 1rem auto 0;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.featured-item {
  text-align: center;
  group: hover;
}

.img-container {
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
  aspect-ratio: 3/4;
}

.img-container img {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}

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

.featured-desc {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-top: var(--spacing-xs);
}

/* 灵感专栏 */
.inspiration-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--spacing-lg);
}

.inspiration-text {
  padding: var(--spacing-md);
  border-left: 2px solid var(--color-accent);
}

.inspiration-text p {
  font-size: 1.1rem;
  color: var(--color-text-main);
  line-height: 1.8;
}

/* =========================================
   5. 风格图鉴页面 (Gallery)
   ========================================= */
.filter-bar {
  position: sticky;
  top: 60px; /* 根据导航栏高度调整 */
  background-color: var(--color-bg-main);
  z-index: 90;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-light-gray);
  margin-bottom: var(--spacing-lg);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.filter-btn {
  background: none;
  border: none;
  font-family: var(--font-main);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.5rem 1rem;
  color: var(--color-text-main);
  transition: all var(--transition-fast);
  border-radius: 20px;
}

.filter-btn.active, .filter-btn:hover {
  background-color: var(--color-text-main);
  color: var(--color-bg-main);
}

.gallery-grid {
  columns: 3 300px; /* 瀑布流核心 */
  column-gap: var(--spacing-md);
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-md);
  position: relative;
  overflow: hidden;
  cursor: zoom-in;
}

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(42, 42, 42, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.gallery-text {
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  transform: translateY(20px);
  transition: transform var(--transition-fast);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-item:hover .gallery-text {
  transform: translateY(0);
}

/* 风格解析模块 */
.style-analysis {
  background-color: #F2EBE5;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xl);
}

.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: var(--spacing-md);
  align-items: center;
}

.analysis-text {
  padding: 0 var(--spacing-md);
  text-align: center;
}

/* =========================================
   6. 穿搭哲学页面 (Philosophy)
   ========================================= */
.philosophy-hero {
  height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: #E8E4DF;
  text-align: center;
  padding: 0 var(--spacing-sm);
  background-size: cover;
  background-position: center;
  position: relative;
}

.philosophy-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  z-index: 2;
}

.philosophy-subtitle {
  font-family: var(--font-en);
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  color: var(--color-secondary);
  z-index: 2;
}

.cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: -3rem; /* 上浮效果 */
  position: relative;
  z-index: 5;
}

.philosophy-card {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.03);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.philosophy-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.06);
}

.card-img {
  height: 300px;
  width: 100%;
  object-fit: cover;
  margin-bottom: var(--spacing-sm);
}

.quote-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-text-main);
  color: var(--color-bg-main);
  text-align: center;
  margin-top: var(--spacing-xl);
}

.quote-text {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
}

/* =========================================
   7. 动画与辅助 (Animations & Helpers)
   ========================================= */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, -10px); }
  60% { transform: translate(-50%, -5px); }
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  z-index: 2000;
  display: none;
  justify-content: center;
  align-items: center;
}

.modal.active {
  display: flex;
}

.modal-img {
  max-width: 90%;
  max-height: 90%;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.close-modal {
  position: absolute;
  top: 2rem;
  right: 2rem;
  color: white;
  font-size: 2rem;
  cursor: pointer;
}

/* =========================================
   8. 响应式设计 (Responsive)
   ========================================= */
@media (max-width: 1024px) {
  h1 { font-size: 2rem; }
  .hero-title { font-size: 2.8rem; }
  .inspiration-layout { gap: var(--spacing-md); }
}

@media (max-width: 768px) {
  /* 导航栏 */
  .hamburger { display: flex; }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: var(--color-bg-main);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right var(--transition-fast);
    box-shadow: -5px 0 15px rgba(0,0,0,0.05);
  }
  
  .nav-links.active {
    right: 0;
  }

  /* 首页 */
  .featured-grid { grid-template-columns: 1fr; }
  
  .inspiration-layout { grid-template-columns: 1fr; }
  .inspiration-text { order: 2; border-left: none; border-top: 2px solid var(--color-accent); padding-top: var(--spacing-sm); }
  .inspiration-img { order: 1; }
  
  /* 图鉴 */
  .gallery-grid { columns: 1 auto; }
  .filter-bar { top: 50px; overflow-x: auto; justify-content: flex-start; padding: var(--spacing-sm); white-space: nowrap; -webkit-overflow-scrolling: touch; }
  .analysis-grid { grid-template-columns: 1fr; }
  .analysis-text { padding: var(--spacing-sm) 0; }
  .analysis-grid img { width: 100%; height: 300px; object-fit: cover; }
  
  /* 哲学 */
  .philosophy-title { font-size: 2rem; }
  .quote-text { font-size: 1.2rem; }
  
  .section { padding: var(--spacing-md) 0; }
  .hero-title { font-size: 2rem; }
}

@media (max-width: 480px) {
  :root {
    --spacing-xl: 3rem;
    --spacing-lg: 2rem;
  }
  
  .hero-title { font-size: 1.8rem; }
  .filter-btn { padding: 0.3rem 0.8rem; font-size: 0.8rem; }
}