/* Winstar Bio Bag - Modern Green Theme CSS */
/* 现代化环保绿色主题样式 */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Variables - 环保绿色主题色彩系统 */
:root {
  /* 主色调 - 环保绿色 */
  --primary-green: #2E7D32;
  --primary-green-light: #4CAF50;
  --primary-green-dark: #1B5E20;
  --accent-green: #66BB6A;
  --eco-green: #81C784;
  
  /* 辅助色彩 */
  --white: #FFFFFF;
  --light-gray: #F5F5F5;
  --medium-gray: #E0E0E0;
  --dark-gray: #333333;
  --text-gray: #666666;
  --border-gray: #EEEEEE;
  
  /* 状态色彩 */
  --success: #4CAF50;
  --warning: #FF9800;
  --error: #F44336;
  --info: #2196F3;
  
  /* 字体系统 */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* 间距系统 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* 圆角系统 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* 阴影系统 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.18);
  
  /* 过渡动画 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* 全局样式重置和基础设置 */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  color: var(--dark-gray);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

/* 链接样式 */
a {
  color: var(--primary-green);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--primary-green-dark);
  text-decoration: none;
}

.footer-section {background-color: #e6ffe9;
	}

/* 按钮样式系统 */
.btn {
  font-family: var(--font-primary);
  font-weight: 500;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-green-dark) 0%, var(--primary-green) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--white);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-green);
  border: 2px solid var(--primary-green);
}

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

/* 卡片样式系统 */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-gray);
  transition: var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-img-top {
  border-radius: 0;
  transition: var(--transition-normal);
}

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

/* Navigation Bar Styles */
.navbar-nav .nav-link {
  color: var(--text-color) !important;
  font-weight: 600;
  padding: 0.75rem 1rem;
  margin: 0 0.25rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
  font-size: 0.875rem;
  white-space: nowrap;
}

/* Vertical Navigation Layout */
.navbar-collapse {
  flex-direction: column !important;
}

.navbar-collapse .w-100:first-child {
  order: 1;
}

.navbar-collapse .w-100:last-child {
  order: 2;
}

/* Logo section styling */
.navbar-collapse .w-100:first-child .col-md-12 {
  padding: 1rem 0;
}

.navbar-collapse .w-100:first-child img {
  max-height: 80px;
  width: auto;
}

/* Menu items styling */
.navbar-collapse .w-100:last-child .navbar-nav {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .navbar-collapse .w-100:last-child .navbar-nav {
    flex-direction: column;
  }
  
  .navbar-collapse .w-100:first-child img {
    max-height: 60px;
  }
}

.navbar-nav .nav-link:hover {
  color: var(--primary-green) !important;
  background-color: rgba(76, 175, 80, 0.1);
}

.navbar-nav .nav-link.active {
  color: var(--primary-green) !important;
}

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-green), var(--primary-green-light));
  border-radius: 2px;
}

/* 轮播样式 */
.carousel {
}

.carousel-item img {
  height: 500px;
  object-fit: cover;
  width: 100%;
}

.carousel-indicators {
  bottom: 20px;
}

.carousel-indicators li {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  border: 2px solid var(--white);
  transition: var(--transition-fast);
}

.carousel-indicators .active {
  background-color: var(--primary-green);
  transform: scale(1.2);
}

/* 节区样式 */
.section {
  padding: var(--spacing-xxl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-green), var(--primary-green-light));
  border-radius: 2px;
}

/* 认证展示区域 */
.certification-section {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  padding: var(--spacing-xxl) 0;
}

.certification-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: var(--transition-normal);
  border: 3px solid transparent;
}

.certification-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-green-light);
}

.certification-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
  color: var(--white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
}

/* 视频播放器样式 */
.video-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.video-container:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.embed-responsive {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* 产品卡片样式 */
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  border: 1px solid var(--border-gray);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-green-light);
}

.product-card .card-img-top {
  height: 200px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.product-card:hover .card-img-top {
  transform: scale(1.1);
}

.product-card .card-body {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 90px; /* 保持标题区高度一致，避免卡片跳动 */
}

.product-card .card-text {
  font-weight: 600;
  color: var(--dark-gray);
  text-align: center;
  margin: 0;
  line-height: 1.4;
  letter-spacing: 0.2px;
}

/* 合作伙伴展示区域 */
.partners-section {
  background: #e6ffe9 ;
  padding: var(--spacing-xxl) 0;
}

.partner-logo {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  transition: var(--transition-normal);
  filter: grayscale(100%);
  opacity: 0.7;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: auto;
}

.partner-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.partner-logo img {
  max-height: 60px;
  max-width: 100%;
  object-fit: contain;
}

/* 页脚样式 */
.footer {
  background: linear-gradient(135deg, var(--dark-gray) 0%, #2c2c2c 100%);
  color: var(--white);
  padding: var(--spacing-xxl) 0 var(--spacing-lg) 0;
}

.footer h5 {
  color: var(--primary-green-light);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer a {
  color: #cccccc;
  transition: var(--transition-fast);
}

.footer a:hover {
  color: var(--primary-green-light);
}

.footer .social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: rgba(76, 175, 80, 0.2);
  border-radius: 50%;
  text-align: center;
  line-height: 40px;
  margin: 0 var(--spacing-xs);
  transition: var(--transition-normal);
}

.footer .social-links a:hover {
  background: var(--primary-green-light);
  transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
  :root {
    --spacing-xxl: 2rem;
    --spacing-xl: 1.5rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .navbar {
    padding: var(--spacing-xs) 0;
  }
  
  .carousel-item img {
    height: 300px;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 13px;
  }
  
  .partner-logo {
    height: 60px;
  }
  
  .partner-logo img {
    max-height: 40px;
  }
}

@media (max-width: 576px) {
  .carousel-item img {
    height: 250px;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  .certification-card {
    padding: var(--spacing-md);
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromBottom {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.8s ease-out;
}

.animate-fade-in-right {
  animation: fadeInRight 0.8s ease-out;
}

.animate-slide-in-bottom {
  animation: slideInFromBottom 1s ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* 滚动触发动画 */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

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

/* 加载动画 */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--white);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* 工具类 */
.text-primary {
  color: var(--primary-green) !important;
}

.bg-primary {
  background-color: var(--primary-green) !important;
}

.border-primary {
  border-color: var(--primary-green) !important;
}

.shadow-custom {
  box-shadow: var(--shadow-lg) !important;
}

.rounded-custom {
  border-radius: var(--radius-lg) !important;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-green-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-green);
}