/* 全局样式文件 - 时尚女装视觉展示网站 */

/* ========== 基础配置 ========== */
:root {
  --color-primary: #f5f5f0;
  --color-secondary: #e8e8e0;
  --color-accent: #d4cfc0;
  --color-dark: #2a2a2a;
  --color-text: #4a4a4a;
  --color-light: #fafaf8;
  --transition-speed: 0.4s;
  --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --spacing-unit: 1.5rem;
  --max-width: 1440px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========== 导航栏 ========== */
.nav-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(42, 42, 42, 0.08);
  transition: transform var(--transition-speed) var(--transition-ease);
}

.nav-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-unit) calc(var(--spacing-unit) * 2);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-dark);
  text-decoration: none;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.nav-logo:hover {
  opacity: 0.7;
}

.nav-menu {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  list-style: none;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  position: relative;
  transition: color var(--transition-speed) var(--transition-ease);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-dark);
  transition: width var(--transition-speed) var(--transition-ease);
}

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

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

/* ========== 主容器 ========== */
.main-container {
  margin-top: 80px;
  min-height: calc(100vh - 160px);
}

/* ========== 全屏轮播区域 ========== */
.hero-slider {
  position: relative;
  width: 100%;
  height: 90vh;
  overflow: hidden;
}

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

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

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--color-light);
  z-index: 2;
  width: 90%;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 200;
  letter-spacing: 0.2em;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s var(--transition-ease);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  opacity: 0.95;
  animation: fadeInUp 1s var(--transition-ease) 0.3s both;
}

/* ========== 季节专题区域 ========== */
.season-section {
  max-width: var(--max-width);
  margin: calc(var(--spacing-unit) * 6) auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.section-header {
  text-align: center;
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-dark);
  margin-bottom: var(--spacing-unit);
}

.section-subtitle {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-text);
  opacity: 0.8;
}

.season-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--spacing-unit) * 2);
}

.season-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
  background-color: var(--color-secondary);
}

.season-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--transition-ease);
}

.season-card:hover .season-card-image {
  transform: scale(1.05);
}

.season-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: calc(var(--spacing-unit) * 2);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: var(--color-light);
  transform: translateY(0);
  transition: transform var(--transition-speed) var(--transition-ease);
}

.season-card-title {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.season-card-desc {
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.9;
  line-height: 1.6;
}

/* ========== 导航卡片 ========== */
.nav-cards-section {
  max-width: var(--max-width);
  margin: calc(var(--spacing-unit) * 6) auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.nav-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
}

.nav-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/5;
  text-decoration: none;
  display: block;
  background-color: var(--color-secondary);
}

.nav-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--transition-ease);
}

.nav-card:hover .nav-card-image {
  transform: scale(1.08);
}

.nav-card-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: calc(var(--spacing-unit) * 2);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent 60%);
  color: var(--color-light);
}

.nav-card-title {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.nav-card-subtitle {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

/* ========== 系列展示页面 ========== */
.collections-section {
  max-width: var(--max-width);
  margin: calc(var(--spacing-unit) * 4) auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.collection-item {
  margin-bottom: calc(var(--spacing-unit) * 8);
  opacity: 0;
  transform: translateY(40px);
  animation: fadeInUp 0.8s var(--transition-ease) forwards;
}

.collection-item:nth-child(2) {
  animation-delay: 0.2s;
}

.collection-item:nth-child(3) {
  animation-delay: 0.4s;
}

.collection-header {
  margin-bottom: calc(var(--spacing-unit) * 3);
  text-align: center;
}

.collection-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-dark);
  margin-bottom: var(--spacing-unit);
}

.collection-intro {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-text);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

.collection-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-unit) * 3);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.collection-main-image {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background-color: var(--color-secondary);
}

.collection-main-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--transition-ease);
}

.collection-main-image:hover img {
  transform: scale(1.03);
}

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

.detail-image {
  aspect-ratio: 1;
  overflow: hidden;
  background-color: var(--color-secondary);
}

.detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--transition-ease);
}

.detail-image:hover img {
  transform: scale(1.05);
}

.collection-description {
  text-align: center;
  padding: calc(var(--spacing-unit) * 2);
  background-color: var(--color-secondary);
  border-radius: 2px;
}

.collection-desc-text {
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.8;
  color: var(--color-text);
}

/* ========== 灵感页面 ========== */
.inspiration-section {
  max-width: var(--max-width);
  margin: calc(var(--spacing-unit) * 4) auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.intro-block {
  text-align: center;
  max-width: 800px;
  margin: 0 auto calc(var(--spacing-unit) * 6);
  padding: calc(var(--spacing-unit) * 4) 0;
}

.intro-quote {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  line-height: 2;
  color: var(--color-dark);
  font-style: italic;
}

.color-story-section {
  margin-bottom: calc(var(--spacing-unit) * 6);
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--spacing-unit) * 2);
}

.color-card {
  text-align: center;
}

.color-palette {
  display: flex;
  height: 200px;
  margin-bottom: var(--spacing-unit);
  border-radius: 2px;
  overflow: hidden;
}

.color-swatch {
  flex: 1;
  transition: flex 0.4s var(--transition-ease);
}

.color-swatch:hover {
  flex: 1.5;
}

.color-name {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-dark);
}

.visual-wall-section {
  margin: calc(var(--spacing-unit) * 6) 0;
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: calc(var(--spacing-unit) * 1.5);
}

.visual-item {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  cursor: pointer;
  background-color: var(--color-secondary);
}

.visual-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--transition-ease), filter 0.4s var(--transition-ease);
}

.visual-item:hover img {
  transform: scale(1.08);
  filter: brightness(1.1);
}

/* ========== 页脚 ========== */
.footer {
  text-align: center;
  padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
  background-color: var(--color-secondary);
  margin-top: calc(var(--spacing-unit) * 6);
}

.footer-text {
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-text);
}

/* ========== 动画效果 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
  :root {
    --spacing-unit: 1.2rem;
  }
  
  .nav-wrapper {
    padding: var(--spacing-unit);
  }
  
  .nav-menu {
    gap: var(--spacing-unit);
  }
  
  .collection-content {
    grid-template-columns: 1fr;
  }
  
  .collection-details {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-unit: 1rem;
  }
  
  .nav-menu {
    gap: calc(var(--spacing-unit) * 0.8);
  }
  
  .nav-link {
    font-size: 0.85rem;
  }
  
  .season-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-cards-grid {
    grid-template-columns: 1fr;
  }
  
  .collection-details {
    grid-template-columns: 1fr;
  }
  
  .color-grid {
    grid-template-columns: 1fr;
  }
  
  .visual-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 480px) {
  .hero-slider {
    height: 70vh;
  }
  
  .nav-logo {
    font-size: 1.2rem;
  }
  
  .nav-link {
    font-size: 0.8rem;
  }
  
  .visual-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== 优化加载性能 ========== */
img {
  loading: lazy;
}

.fade-in {
  animation: fadeIn 0.6s var(--transition-ease);
}