/**
 * 现代化首页样式优化
 * 提升整体视觉效果和用户体验
 */

/* ========== CSS变量定义 ========== */
:root {
  /* 首页配色方案 */
  --homepage-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --section-bg: #ffffff;
  --section-text: #2d3748;
  --section-text-muted: #718096;
  --section-border: rgba(0, 0, 0, 0.1);
  --search-bg: #ffffff;
  --search-border: transparent;
  --search-focus-border: #667eea;
  --category-card-bg: transparent;
  --category-card-hover-bg: rgba(102, 126, 234, 0.05);
  --category-card-text: #2d3748;
  --product-card-bg: #ffffff;
  --product-card-border: #e2e8f0;
  --product-card-shadow: rgba(0, 0, 0, 0.1);
  --membership-card-bg: rgba(255, 255, 255, 0.95);
  --membership-card-text: #333333;
  --tab-bg: #f7fafc;
  --tab-text: #4a5568;
  --tab-hover-bg: rgba(102, 126, 234, 0.1);
  --tab-hover-text: #667eea;
  --tab-active-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --tab-active-text: #ffffff;
}

/* 夜间模式变量 */
[data-theme="dark"] {
  --homepage-bg: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
  --section-bg: #2d3748;
  --section-text: #f7fafc;
  --section-text-muted: #a0aec0;
  --section-border: rgba(255, 255, 255, 0.1);
  --search-bg: #4a5568;
  --search-border: rgba(255, 255, 255, 0.2);
  --search-focus-border: #90cdf4;
  --category-card-bg: transparent;
  --category-card-hover-bg: rgba(144, 205, 244, 0.1);
  --category-card-text: #f7fafc;
  --product-card-bg: #4a5568;
  --product-card-border: #718096;
  --product-card-shadow: rgba(0, 0, 0, 0.3);
  --membership-card-bg: rgba(74, 85, 104, 0.95);
  --membership-card-text: #f7fafc;
  --tab-bg: #4a5568;
  --tab-text: #e2e8f0;
  --tab-hover-bg: rgba(144, 205, 244, 0.1);
  --tab-hover-text: #90cdf4;
  --tab-active-bg: linear-gradient(135deg, #90cdf4 0%, #a78bfa 100%);
  --tab-active-text: #1a202c;
}

/* ========== 首页整体布局优化 ========== */
.homepage-container {
  background: var(--homepage-bg);
  min-height: 100vh;
  transition: background 0.3s ease;
}

/* 轮播图现代化 */
.carousel {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  margin-bottom: 3rem;
  position: relative;
}

.carousel-item img {
  height: 450px !important;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.carousel-item:hover img {
  transform: scale(1.02);
}

.carousel-caption {
  background: linear-gradient(45deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
  border-radius: 15px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  text-align: left;
}

.carousel-caption h5 {
  font-size: 2rem !important;
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.carousel-caption p {
  font-size: 1.1rem !important;
  opacity: 0.9;
  line-height: 1.6;
}

/* 轮播图控制按钮美化 */
.carousel-control-prev,
.carousel-control-next {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
}

.carousel-control-prev {
  left: 2rem;
}

.carousel-control-next {
  right: 2rem;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  background: rgba(255, 255, 255, 0.4);
  transform: translateY(-50%) scale(1.1);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  width: 24px;
  height: 24px;
}

/* 轮播图指示器美化 */
.carousel-indicators {
  bottom: 1rem;
}

.carousel-indicators li {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 0 6px;
  background: rgba(255, 255, 255, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
}

.carousel-indicators .active {
  background: white;
  transform: scale(1.2);
}

/* ========== 搜索区域现代化 ========== */
.search-section {
  background: var(--search-bg);
  border-radius: 20px;
  padding: 2.5rem;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px var(--product-card-shadow);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.search-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
}

.search-form .input-group {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  border-radius: 15px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.search-form .input-group:focus-within {
  border-color: #667eea;
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(102, 126, 234, 0.2);
}

.search-form .form-control {
  border: none !important;
  padding: 1rem 1.5rem;
  font-size: 1.1rem;
  border-radius: 25px;
  background: var(--search-bg);
  color: var(--section-text);
  transition: all 0.3s ease;
  outline: none !important;
  box-shadow: none !important;
}

.search-form .form-control:focus {
  box-shadow: none !important;
  background: var(--search-bg);
  border: none !important;
  color: var(--section-text);
  outline: none !important;
}

.search-form .form-control::placeholder {
  color: var(--section-text-muted);
}

.search-form .btn {
  padding: 1rem 2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.search-form .btn:hover {
  background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
  transform: scale(1.05);
}

/* ========== 分类卡片现代化（精简版） ========== */
.category-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 3rem;
  max-width: 100%;
}

.category-card {
  background: var(--category-card-bg);
  border: none;
  padding: 1rem 0.5rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  cursor: pointer;
  border-radius: 12px;
  width: 120px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.category-card:hover {
  transform: translateY(-5px);
  background: var(--category-card-hover-bg);
}

.category-card img {
  width: 48px !important;
  height: 48px !important;
  border-radius: 12px !important;
  margin-bottom: 0.75rem !important;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.category-card:hover img {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.category-card .fas {
  font-size: 2.5rem !important;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
  transition: all 0.3s ease;
  display: block;
}

.category-card:hover .fas {
  transform: scale(1.1);
}

.category-card .card-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0;
  color: var(--category-card-text);
  line-height: 1.3;
  transition: color 0.3s ease;
}

.category-card .card-text {
  display: none;
}

/* ========== 商品标签区域现代化 ========== */
.products-section {
  background: var(--section-bg);
  border-radius: 20px;
  padding: 2.5rem;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px var(--product-card-shadow);
  transition: all 0.3s ease;
}

/* 区域分割样式 */
.products-section .section-header + .section-header {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--section-border);
}

.products-section .section-header h3.section-title {
  font-size: 1.8rem;
  color: var(--section-text);
  transition: color 0.3s ease;
}

/* 会员套餐区域样式调整 */
.products-section .membership-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--section-border);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--section-text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
  transition: color 0.3s ease;
}

.product-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.product-tabs .nav-pills {
  background: var(--tab-bg);
  border-radius: 15px;
  padding: 0.5rem;
  box-shadow: inset 0 2px 4px var(--product-card-shadow);
  transition: all 0.3s ease;
}

.product-tabs .nav-pills .nav-link {
  border-radius: 12px !important;
  padding: 1rem 2rem !important;
  margin: 0 0.25rem !important;
  font-weight: 600 !important;
  transition: all 0.3s ease !important;
  background: transparent !important;
  border: none !important;
  color: var(--tab-text) !important;
}

.product-tabs .nav-pills .nav-link:hover {
  background: var(--tab-hover-bg) !important;
  color: var(--tab-hover-text) !important;
  transform: translateY(-2px) !important;
}

.product-tabs .nav-pills .nav-link.active {
  background: var(--tab-active-bg) !important;
  color: var(--tab-active-text) !important;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4) !important;
}

/* 布局切换按钮美化 */
.layout-toggle-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.layout-toggle {
  border-radius: 10px !important;
  padding: 0.75rem 1.5rem !important;
  font-weight: 500 !important;
  transition: all 0.3s ease !important;
  border: 2px solid var(--product-card-border) !important;
  background: var(--section-bg) !important;
  color: var(--tab-text) !important;
}

.layout-toggle:hover {
  border-color: var(--tab-hover-text) !important;
  color: var(--tab-hover-text) !important;
  transform: translateY(-1px) !important;
}

.layout-toggle.active {
  background: var(--tab-active-bg) !important;
  border-color: transparent !important;
  color: var(--tab-active-text) !important;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3) !important;
}

/* ========== 会员套餐区域增强 ========== */
.membership-section {
  border-radius: 25px !important;
  padding: 3rem 2rem !important;
  margin: 4rem 0 !important;
  position: relative;
  overflow: hidden;
}

.membership-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

.membership-section .section-title {
  color: white !important;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.membership-section .lead {
  color: rgba(255, 255, 255, 0.9) !important;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.membership-card {
  position: relative;
  z-index: 2;
  background: var(--membership-card-bg) !important;
  color: var(--membership-card-text) !important;
  transition: all 0.3s ease;
}

.membership-title {
  color: var(--membership-card-text) !important;
}

.membership-description {
  color: var(--section-text-muted) !important;
}

/* ========== 响应式优化 ========== */
@media (max-width: 991px) {
  .carousel-caption {
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
    padding: 1.5rem;
  }
  
  .carousel-caption h5 {
    font-size: 1.5rem !important;
  }
  
  .carousel-control-prev,
  .carousel-control-next {
    width: 50px;
    height: 50px;
  }
  
  .carousel-control-prev {
    left: 1rem;
  }
  
  .carousel-control-next {
    right: 1rem;
  }
  
  .search-section {
    padding: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .product-tabs .nav-pills .nav-link {
    padding: 0.75rem 1.5rem !important;
    font-size: 0.9rem !important;
  }
}

@media (max-width: 767px) {
  .carousel-item img {
    height: 300px !important;
  }
  
  .carousel-caption {
    text-align: center;
    bottom: 0.5rem;
    left: 0.5rem;
    right: 0.5rem;
    padding: 1rem;
  }
  
  .carousel-caption h5 {
    font-size: 1.2rem !important;
  }
  
  .carousel-caption p {
    font-size: 0.9rem !important;
  }
  
  .search-section {
    padding: 1.5rem;
    margin-bottom: 2rem;
  }
  
  .search-form .form-control {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
  
  .search-form .btn {
    padding: 0.75rem 1.5rem;
  }
  
  .category-grid {
    justify-content: center;
    gap: 0.75rem;
  }
  
  .category-card {
    padding: 0.75rem 0.25rem;
    width: 100px;
  }
  
  .category-card img {
    width: 40px !important;
    height: 40px !important;
  }
  
  .category-card .fas {
    font-size: 2rem !important;
  }
  
  .category-card .card-title {
    font-size: 0.8rem;
  }
  
  .products-section {
    padding: 1.5rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .product-tabs {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 0.5rem;
  }
  
  .product-tabs .nav-pills {
    flex-wrap: nowrap;
    min-width: max-content;
  }
  
  .membership-section {
    padding: 2rem 1rem !important;
    margin: 2rem 0 !important;
  }
}

@media (max-width: 480px) {
  .carousel-item img {
    height: 250px !important;
  }
  
  .search-section {
    padding: 1rem;
  }
  
  .category-grid {
    justify-content: center;
    gap: 0.5rem;
  }
  
  .category-card {
    padding: 0.5rem 0.25rem;
    width: 80px;
  }
  
  .category-card img {
    width: 32px !important;
    height: 32px !important;
  }
  
  .category-card .fas {
    font-size: 1.5rem !important;
  }
  
  .category-card .card-title {
    font-size: 0.7rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .product-tabs .nav-pills .nav-link {
    padding: 0.5rem 1rem !important;
    font-size: 0.8rem !important;
  }
}

/* ========== 加载动画和过渡效果 ========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========== 无障碍和性能优化 ========== */
@media (prefers-reduced-motion: reduce) {
  .carousel-item img,
  .category-card,
  .membership-card,
  .fade-in,
  .slide-in-left,
  .slide-in-right {
    transition: none !important;
    animation: none !important;
  }
  
  .carousel-item:hover img,
  .category-card:hover,
  .category-card:hover img,
  .category-card:hover .fas {
    transform: none !important;
  }
}