/* 高级优雅紫主题变量 */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #faf5ff;
  --bg-nav: rgba(255, 255, 255, 0.85);

  --text-primary: #4c1d95; /* 深幽紫 */
  --text-secondary: #7c3aed; /* 亮丽紫 */
  --text-inverse: #ffffff;

  --accent-color: #8b5cf6; /* 核心紫罗兰 */
  --accent-hover: #6d28d9;

  --border-color: rgba(139, 92, 246, 0.12);
  --shadow-sm: 0 4px 12px rgba(139, 92, 246, 0.05);
  --shadow-md: 0 10px 30px rgba(139, 92, 246, 0.08);
  --shadow-lg: 0 20px 50px rgba(139, 92, 246, 0.15);

  --transition-fast: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 动画和基础效果 */
.fade-in {
  opacity: 0;
  transform: translateY(15px);
  animation: fadeIn 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
.fade-delay {
  animation-delay: 0.2s;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

a {
  color: inherit;
  text-decoration: none;
}

/* 顶部导航，极简毛玻璃白 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.nav-container {
  width: 100%;
  max-width: 1200px;
  padding: 0 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 600;
  letter-spacing: -0.5px;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links li a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  font-weight: 500;
}

.nav-links li a:hover {
  color: var(--text-primary);
}

.cart-icon {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  font-weight: 500;
}

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

.cart-badge {
  background: var(--accent-color);
  color: var(--text-inverse);
  padding: 2px 6px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
}

/* 首屏区域：大面积留白 */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  padding: 100px 30px 60px;
  background: var(--bg-secondary);
}

.hero-content {
  max-width: 800px;
  z-index: 2;
  margin-bottom: 60px;
}

.hero-title {
  font-size: 5.5rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  font-weight: 800;
  color: var(--text-primary);
  text-shadow: 0 10px 30px rgba(139, 92, 246, 0.15);
}

.gradient-text {
  background: linear-gradient(-45deg, #7c3aed, #ec4899, #8b5cf6, #3b82f6);
  background-size: 300%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: gradientText 6s ease infinite;
}

@keyframes gradientText {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.highlight {
  color: var(--text-secondary); /* 在纯白设计中，可以使用次要颜色作为高光，体现克制的美感 */
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  margin-left: auto;
  margin-right: auto;
  max-width: 500px;
  font-weight: 400;
}

.primary-btn {
  background: var(--accent-color);
  color: var(--text-inverse);
  border: none;
  padding: 14px 32px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.primary-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.02);
}

/* 视觉留白意象：一个纯净圆角容器 */
.hero-visual {
  width: 100%;
  max-width: 900px;
  height: 480px;
  background: var(--bg-primary);
  border-radius: 32px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.minimal-artwork {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  border-radius: 100px;
  /* 极简优雅高亮渐变 */
  background: linear-gradient(135deg, #f3e8ff 0%, #d8b4fe 100%);
  box-shadow: inset 0 0 40px rgba(255,255,255,0.8), 0 20px 40px rgba(139, 92, 246, 0.15);
}

/* 产品列表 */
.product-section {
  padding: 120px 30px;
  background: var(--bg-primary);
}

.section-header {
  text-align: center;
  margin-bottom: 80px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.product-card {
  background: var(--bg-primary);
  border-radius: 20px;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
  cursor: pointer;
  overflow: hidden;
  border: 1px solid transparent;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.product-image-container {
  width: 100%;
  height: 320px;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  margin-bottom: 20px;
}

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

.product-card:hover .product-image {
  transform: scale(1.03);
}

.product-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.05), transparent);
  display: flex;
  justify-content: center;
  align-items: flex-end;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.quick-add-btn {
  background: var(--bg-nav);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 24px;
  border-radius: 20px;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transform: translateY(10px);
  transition: transform var(--transition-fast), background var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.quick-add-btn:hover {
  background: var(--bg-primary);
}

.product-card:hover .quick-add-btn {
  transform: translateY(0);
}

.product-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 10px 10px;
}

.product-category {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
}

.product-name {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.product-price {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}

.price-original {
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-decoration: line-through;
  opacity: 0.6;
  position: relative;
}

.price-original::after {
  content: '';
  position: absolute;
  top: 50%;
  left: -5%;
  width: 110%;
  height: 2px;
  background: var(--text-secondary);
  transform: translateY(-50%) rotate(-8deg);
  opacity: 0.8;
}

.price-discount {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: 0px 4px 10px rgba(236, 72, 153, 0.2);
}

/* 积分展示徽章 */
.points-badge {
  display: inline-block;
  background: #111111;
  color: #ffffff;
  padding: 4px 16px;
  border-radius: 30px;
  font-weight: 600;
  box-shadow: none;
  margin-left: 8px;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
}

.rewards-section {
  padding: 120px 30px;
  background: var(--bg-primary);
}

.reward-card {
  border: 1px solid rgba(0, 0, 0, 0.05);
  background: #ffffff;
  position: relative;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  transition: all 0.4s ease;
  border-radius: 16px;
}

.reward-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.reward-btn {
  background: #111111;
  color: #ffffff;
  border: none;
  border-radius: 30px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.8rem;
  padding: 12px 28px;
}
.reward-btn:hover {
  background: #333333;
}

/* 关于部分 */
.about-section {
  padding: 120px 30px;
  background: var(--bg-secondary);
  text-align: center;
}

.about-content {
  max-width: 700px;
  margin: 0 auto;
}

.about-content h2 {
  font-size: 2.5rem;
  margin-bottom: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.8;
}

/* 页脚 */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 80px 30px 40px;
  background: var(--bg-primary);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand h2 {
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 80px;
}

.link-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.link-group h3 {
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.link-group a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* 购物车抽屉 - 明亮感 */
.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(23ede, 230, 255, 0.2);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.cart-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: -450px;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 1001;
  padding: 30px;
  display: flex;
  flex-direction: column;
  transition: right var(--transition-slow);
  box-shadow: -10px 0 40px rgba(0,0,0,0.05);
}

.cart-drawer.open {
  right: 0;
}

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.cart-header h2 {
  font-weight: 500;
  font-size: 1.25rem;
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.8rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.cart-content {
  flex: 1;
  overflow-y: auto;
  padding: 30px 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.empty-cart-msg {
  text-align: center;
  color: var(--text-secondary);
  width: 100%;
}

.empty-cart-msg p {
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
  width: 100%;
}

.cart-item img {
  width: 65px;
  height: 65px;
  border-radius: 12px;
  object-fit: cover;
  background: var(--bg-secondary);
}

.cart-item-details {
  flex: 1;
}

.cart-item-title {
  font-size: 0.95rem;
  font-weight: 500;
}

.cart-item-price {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.remove-btn {
  background: transparent;
  border: none;
  color: #d93d3d;
  cursor: pointer;
  font-size: 0.8rem;
  margin-top: 6px;
  font-weight: 500;
}

.sm-btn {
  padding: 10px 24px;
  font-size: 0.85rem;
}

.cart-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 20px;
}

.checkout-btn {
  width: 100%;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
  .hero-visual {
    height: 320px;
  }
  .navbar {
    padding: 0;
  }
  .nav-container {
    padding: 0 20px;
  }
  .nav-links {
    display: none;
  }
  .cart-text {
    display: none;
  }
  .footer-content {
    flex-direction: column;
    gap: 40px;
  }
  .footer-links {
    flex-direction: column;
    gap: 30px;
  }
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-primary);
  width: 90%;
  max-width: 480px;
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  text-align: center;
  transform: translateY(20px) scale(0.95);
  transition: transform var(--transition-fast);
}

.modal-overlay.open .modal-content {
  transform: translateY(0) scale(1);
}

.modal-content h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.modal-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.input-field {
  width: 100%;
  padding: 14px 20px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 1rem;
  margin-bottom: 16px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  transition: border var(--transition-fast), box-shadow var(--transition-fast);
}

.input-field:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.modal-actions {
  display: flex;
  gap: 16px;
  margin-top: 10px;
}

.modal-actions button {
  flex: 1;
}

.close-btn-text {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 14px 32px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.close-btn-text:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}