/* NOIRGEAR 红木家具电商网站样式 */
/* 蓝色商业风格 */

/* CSS变量 - 色彩体系 */
:root {
  /* 表面层级 */
  --canvas: #ffffff;
  --surface-1: #f8fafc;
  --surface-2: #f1f5f9;
  --surface-3: #e2e8f0;
  
  /* 边框 */
  --border: #cbd5e1;
  
  /* 文字 */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --text-placeholder: #cbd5e1;
  
  /* CTA */
  --cta-bg: #2563eb;
  --cta-text: #ffffff;
  
  /* 强调色 */
  --accent: #2563eb;
  
  /* 阴影 */
  --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-card-press: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-drawer: -4px 0 24px rgba(0,0,0,0.15);
  
  /* 字体 */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 48px;
  --spacing-4xl: 80px;
  --spacing-5xl: 120px;
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 9999px;
  
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease-out;
  --transition-slow: 400ms ease;
}

/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background-color: var(--canvas);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--surface-3);
  z-index: 1000;
  transition: background var(--transition-slow);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-2xl);
}

.nav-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color var(--transition-normal);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.cart-icon,
.user-icon {
  position: relative;
  color: var(--text-secondary);
  transition: color var(--transition-normal);
}

.cart-icon:hover,
.user-icon:hover {
  color: var(--text-primary);
}

.user-icon {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--surface-3);
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  min-width: 18px;
  text-align: center;
}

/* 产品大图轮播 */
.hero-carousel {
  position: relative;
  width: 100%;
  height: 70vh;
  background: var(--surface-1);
  margin-top: 64px;
  overflow: hidden;
}

.carousel-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 600ms ease, transform 600ms ease;
  transform: scale(1);
}

.carousel-slide.active {
  opacity: 1;
  transform: scale(1.02);
}

.slide-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-3xl);
}

.slide-text {
  flex: 0 0 40%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.slide-tag {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-tertiary);
  letter-spacing: 0.01em;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
}

.slide-title {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.05;
  letter-spacing: -0.05em;
  margin-bottom: var(--spacing-lg);
}

.slide-desc {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.slide-image {
  flex: 0 0 60%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-img {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--radius-lg);
}

.product-placeholder {
  width: 100%;
  max-width: 600px;
  aspect-ratio: 4/3;
  background: var(--surface-3);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  color: var(--text-tertiary);
  font-size: 14px;
}

.cta-button {
  display: inline-block;
  background: var(--cta-bg);
  color: var(--cta-text);
  font-size: 14px;
  font-weight: 500;
  padding: var(--spacing-md) var(--spacing-2xl);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  align-self: flex-start;
}

.cta-button:hover {
  background: #1d4ed8;
  transform: scale(1.02);
}

.carousel-indicators {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
}

.indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-placeholder);
  transition: background var(--transition-normal);
}

.indicator.active {
  background: var(--accent);
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: all var(--transition-normal);
}

.carousel-arrow:hover {
  background: rgba(37, 99, 235, 0.2);
}

.carousel-arrow.prev {
  left: var(--spacing-2xl);
}

.carousel-arrow.next {
  right: var(--spacing-2xl);
}

/* 分类Chip导航条 */
.chip-nav {
  position: sticky;
  top: 64px;
  background: var(--canvas);
  border-bottom: 1px solid var(--surface-3);
  z-index: 100;
  padding: var(--spacing-lg) 0;
}

.chip-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  scrollbar-width: none;
}

.chip-container::-webkit-scrollbar {
  display: none;
}

.chip {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.chip:hover {
  border-color: #555555;
  color: #cccccc;
}

.chip.active {
  background: var(--surface-3);
  color: var(--text-primary);
  border-color: var(--text-placeholder);
}

/* 产品橱窗卡片网格 */
.products-grid {
  padding: var(--spacing-5xl) 0;
}

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

.section-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-3xl);
  letter-spacing: -0.03em;
}

.product-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-card {
  position: relative;
  background: var(--canvas);
  border: 1px solid var(--surface-3);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  animation: fadeInUp 600ms ease forwards;
  opacity: 0;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.product-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.product-card:active {
  transform: scale(0.98);
  box-shadow: var(--shadow-card-press);
}

.card-image {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--surface-2);
  overflow: hidden;
}

.image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
}

.product-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.quick-add {
  position: absolute;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  opacity: 0;
  transition: all var(--transition-normal);
}

.product-card:hover .quick-add {
  opacity: 1;
}

.quick-add:hover {
  background: var(--border);
}

.card-info {
  padding: 20px;
}

.card-category {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-tertiary);
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.card-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin: var(--spacing-sm) 0;
  line-height: 1.3;
}

.card-price {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
}

.current-price {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.original-price {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  color: var(--text-tertiary);
  text-decoration: line-through;
}

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

.no-products {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--spacing-5xl);
  color: var(--text-secondary);
  font-size: 16px;
}

/* 系列专题展示 */
.series-section {
  background: var(--surface-1);
  padding: var(--spacing-4xl) 0;
}

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

.series-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2xl);
}

.series-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.view-all {
  font-size: 14px;
  font-weight: 400;
  color: var(--accent);
  transition: color var(--transition-normal);
}

.view-all:hover {
  color: var(--text-primary);
}

.series-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.series-scroll::-webkit-scrollbar {
  height: 6px;
}

.series-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.series-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.series-card {
  position: relative;
  flex: 0 0 280px;
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  scroll-snap-align: start;
}

.series-image {
  height: 160px;
  background: var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
}

.series-info {
  padding: var(--spacing-lg);
}

.series-info h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.series-info p {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

/* 品牌故事区块 */
.brand-story {
  background: var(--surface-1);
  padding: var(--spacing-5xl) 0;
  text-align: center;
}

.story-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.story-logo {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-2xl);
  letter-spacing: -0.02em;
}

.story-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
  letter-spacing: -0.03em;
}

.story-text {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-2xl);
}

.story-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  transition: color var(--transition-normal);
}

.story-link:hover {
  color: var(--text-primary);
}

/* 页脚导航 */
.footer {
  background: var(--surface-1);
  border-top: 1px solid var(--surface-3);
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-column h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-column a {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color var(--transition-normal);
}

.footer-column a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-xl) 0;
  border-top: 1px solid var(--surface-2);
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-tertiary);
}

/* 购物车抽屉 */
.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: all 350ms cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2000;
}

.cart-overlay.active {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  height: 100vh;
  background: var(--canvas);
  box-shadow: var(--shadow-drawer);
  transform: translateX(100%);
  transition: transform 350ms cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2001;
  display: flex;
  flex-direction: column;
}

.cart-drawer.active {
  transform: translateX(0);
}

.cart-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-header h2 {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-primary);
}

.cart-close {
  color: var(--text-secondary);
  transition: color var(--transition-normal);
}

.cart-close:hover {
  color: var(--text-primary);
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xl);
}

.empty-cart {
  text-align: center;
  color: var(--text-secondary);
  padding: var(--spacing-3xl) 0;
}

.cart-footer {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--surface-3);
}

.cart-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.cart-total span:first-child {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
}

.total-amount {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.checkout-button {
  display: block;
  width: 100%;
  background: var(--cta-bg);
  color: var(--cta-text);
  font-size: 14px;
  font-weight: 500;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--transition-normal);
}

.checkout-button:hover {
  background: #1d4ed8;
}

/* 响应式设计 */
@media (max-width: 1279px) {
  .product-cards {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .hero-carousel {
    height: 60vh;
  }
  
  .slide-title {
    font-size: 48px;
  }
  
  .cart-drawer {
    width: 320px;
  }
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
  }
  
  .product-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-carousel {
    height: 50vh;
  }
  
  .slide-content {
    flex-direction: column;
    text-align: center;
    padding-top: var(--spacing-3xl);
  }
  
  .slide-text {
    flex: none;
  }
  
  .slide-title {
    font-size: 36px;
  }
  
  .slide-image {
    flex: none;
    width: 100%;
  }
  
  .cta-button {
    align-self: center;
  }
  
  .cart-drawer {
    width: 100vw;
  }
  
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .series-title {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .product-cards {
    gap: 12px;
  }
  
  .card-info {
    padding: 12px;
  }
  
  .card-title {
    font-size: 13px;
  }
  
  .current-price {
    font-size: 14px;
  }
}