/* 
  Wenwan E-commerce - New Chinese Style 
  新中式文玩独立站 样式表
*/

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* Color Palette - 新中式色板 */
  --color-paper: #FDFBF7; /* 宣纸白 */
  --color-paper-dark: #F5F2EB;
  --color-ink: #2C2C2C; /* 水墨黑 */
  --color-ink-light: #5A5A5A;
  --color-cinnabar: #8B1C1C; /* 朱砂红 */
  --color-cinnabar-light: #A32B2B;
  --color-gold: #B89945; /* 鎏金 */
  --color-border: #E8E2D2;
  --color-white: #FFFFFF;
  
  /* Typography */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans: 'Inter', '-apple-system', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  
  /* Layout & Spacing */
  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  /* Shadows & Transitions */
  --shadow-sm: 0 2px 8px rgba(44, 44, 44, 0.05);
  --shadow-md: 0 8px 24px rgba(44, 44, 44, 0.08);
  --shadow-lg: 0 24px 48px rgba(44, 44, 44, 0.12);
  --transition-fast: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background-color: var(--color-paper);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-ink);
}

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

ul {
  list-style: none;
}

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

/* Typography Utilities */
.text-center { text-align: center; }
.text-cinnabar { color: var(--color-cinnabar); }
.text-gold { color: var(--color-gold); }
.font-serif { font-family: var(--font-serif); }

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background-color: var(--color-cinnabar);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-ink-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 1px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.btn-primary {
  background-color: var(--color-cinnabar);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-cinnabar-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.btn-outline:hover {
  background-color: var(--color-ink);
  color: var(--color-paper);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(253, 251, 247, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(232, 226, 210, 0.5);
  transition: all var(--transition-fast);
  padding: 1rem 0;
}

.header.scrolled {
  padding: 0.5rem 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  color: var(--color-cinnabar);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  position: relative;
  padding: 0.5rem 0;
}

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

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

.nav-actions {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.action-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.action-btn:hover {
  color: var(--color-cinnabar);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--color-cinnabar);
  color: white;
  font-size: 0.7rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-btn-wrapper {
  position: relative;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-ink);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 600px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-paper-dark);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
  transform: scale(1.05);
  transition: transform 10s ease-out;
}

.hero.loaded .hero-bg {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(253,251,247,0.9) 0%, rgba(253,251,247,0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: var(--max-width);
  padding: 0 var(--spacing-md);
  margin-top: 4rem; /* Offset for header */
}

.hero-subtitle {
  font-family: var(--font-serif);
  color: var(--color-cinnabar);
  font-size: 1.2rem;
  letter-spacing: 4px;
  margin-bottom: 1rem;
  display: block;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards 0.2s;
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  max-width: 600px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards 0.4s;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-ink-light);
  max-width: 500px;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards 0.6s;
}

.hero-actions {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards 0.8s;
}

/* Vertical Text Banner (Chinese Style Element) */
.vertical-text {
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 2rem;
  letter-spacing: 1rem;
  color: rgba(44, 44, 44, 0.1);
  z-index: 5;
  pointer-events: none;
}

/* Category Section */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.category-card {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  aspect-ratio: 3/4;
  cursor: pointer;
}

.category-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.category-card:hover .category-img {
  transform: scale(1.08);
}

.category-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 2rem 1.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: var(--color-white);
  transition: padding var(--transition-fast);
}

.category-card:hover .category-overlay {
  padding-bottom: 2.5rem;
}

.category-title {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.category-link {
  font-size: 0.9rem;
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  display: inline-block;
}

.category-card:hover .category-link {
  opacity: 1;
  transform: translateY(0);
}

/* Product Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.product-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
  position: relative;
  cursor: pointer;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.product-img-wrapper {
  position: relative;
  aspect-ratio: 1/1;
  overflow: hidden;
  background-color: var(--color-paper-dark);
}

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

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

.product-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--color-cinnabar);
  color: var(--color-white);
  padding: 0.2rem 0.8rem;
  font-size: 0.8rem;
  font-family: var(--font-serif);
  letter-spacing: 1px;
}

.product-actions-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1rem;
  background: rgba(255,255,255,0.9);
  transform: translateY(100%);
  transition: transform var(--transition-fast);
  display: flex;
  gap: 0.5rem;
}

.product-card:hover .product-actions-overlay {
  transform: translateY(0);
}

.btn-icon {
  flex: 1;
  padding: 0.8rem;
  background-color: var(--color-paper);
  border: 1px solid var(--color-border);
  color: var(--color-ink);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  justify-content: center;
  align-items: center;
}

.btn-icon:hover {
  background-color: var(--color-cinnabar);
  border-color: var(--color-cinnabar);
  color: var(--color-white);
}

.product-info {
  padding: 1.5rem;
  text-align: center;
}

.product-category {
  font-size: 0.8rem;
  color: var(--color-ink-light);
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}

.product-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.product-price {
  font-family: var(--font-serif);
  color: var(--color-cinnabar);
  font-size: 1.3rem;
  font-weight: 700;
}

/* About Section */
.about-section {
  background-color: var(--color-paper-dark);
  position: relative;
}

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

.about-img-wrapper {
  position: relative;
}

.about-img {
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 2;
}

.about-img-decor {
  position: absolute;
  top: -20px;
  left: -20px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--color-gold);
  z-index: 1;
}

.about-content h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.about-content p {
  margin-bottom: 1.5rem;
  color: var(--color-ink-light);
  font-size: 1.1rem;
}

.features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  color: var(--color-cinnabar);
  font-size: 1.5rem;
}

.feature-text h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.feature-text p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Newsletter Section */
.newsletter-section {
  background-color: var(--color-ink);
  color: var(--color-paper);
  text-align: center;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.newsletter-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.05;
  background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><path d="M50 0 L100 50 L50 100 L0 50 Z" fill="white"/></svg>');
  background-size: 50px 50px;
}

.newsletter-content {
  position: relative;
  z-index: 10;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-content h2 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.newsletter-content p {
  color: #aaa;
  margin-bottom: 2rem;
}

.newsletter-form {
  display: flex;
  gap: 0;
  max-width: 500px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: none;
  background-color: rgba(255,255,255,0.1);
  color: var(--color-white);
  font-family: var(--font-sans);
  outline: none;
}

.newsletter-input::placeholder {
  color: #888;
}

.newsletter-btn {
  padding: 1rem 2rem;
  background-color: var(--color-cinnabar);
  color: white;
  border: none;
  cursor: pointer;
  font-family: var(--font-serif);
  transition: background-color var(--transition-fast);
}

.newsletter-btn:hover {
  background-color: var(--color-cinnabar-light);
}

/* Footer */
.footer {
  background-color: var(--color-paper-dark);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-ink);
}

.footer-desc {
  color: var(--color-ink-light);
  margin-bottom: 1.5rem;
  max-width: 300px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink);
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.social-link:hover {
  background-color: var(--color-cinnabar);
  color: var(--color-white);
  border-color: var(--color-cinnabar);
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-link {
  color: var(--color-ink-light);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-cinnabar);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--color-ink-light);
}

.contact-icon {
  color: var(--color-cinnabar);
  margin-top: 0.2rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-ink-light);
  font-size: 0.9rem;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 4rem;
    --spacing-lg: 2rem;
  }
  
  .hero-title { font-size: 2.8rem; }
  .about-grid { grid-template-columns: 1fr; }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--color-paper);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: left var(--transition-fast);
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .mobile-menu-btn {
    display: block;
  }
}

@media (max-width: 576px) {
  .grid-cols-2 { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.2rem; }
  .section-title { font-size: 2rem; }
}

/* Feature Square Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 576px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-square {
  background-color: var(--color-paper-dark);
  border: 1px solid var(--color-border);
  aspect-ratio: 1/1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  transition: all var(--transition-fast);
  border-radius: 4px;
}

.feature-square:hover {
  border-color: var(--color-cinnabar);
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-white);
}

.feature-square i {
  font-size: 1.8rem;
  color: var(--color-cinnabar);
  margin-bottom: 0.8rem;
}

.feature-square h5 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-ink);
  margin-bottom: 0.4rem;
}

.feature-square p {
  font-size: 0.75rem;
  color: var(--color-ink-light);
  line-height: 1.4;
  margin: 0;
}