/* NovaSphere 主样式文件 */

/* CSS 变量定义 */
:root {
  /* 主色调 - 统一的绿色主题 */
  --primary-green: #2E7D32;
  --primary-light-green: #4CAF50;
  --primary-dark-green: #1B5E20;
  --accent-blue: #1565C0;
  
  /* 渐变色 - 简化为绿色系 */
  --gradient-primary: linear-gradient(135deg, #1B5E20 0%, #2E7D32 100%);
  --gradient-secondary: linear-gradient(135deg, #2E7D32 0%, #4CAF50 100%);
  --gradient-accent: linear-gradient(135deg, #4CAF50 0%, #66BB6A 100%);
  
  /* 中性色 */
  --white: #FFFFFF;
  --light-gray: #F5F5F5;
  --medium-gray: #9E9E9E;
  --dark-gray: #424242;
  --black: #212121;
  
  /* 字体 */
  --font-primary: 'Source Han Sans CN', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* 圆角 */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 20px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 20px rgba(76, 175, 80, 0.3);
  
  /* 过渡动画 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  overflow-x: hidden;
}

/* 通用样式 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title-white {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

.section-subtitle {
  font-size: 1.2rem;
  text-align: center;
  color: var(--medium-gray);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius-lg);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-width: 120px;
}

.btn-primary {
  background: var(--primary-green);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

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

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

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

.btn-accent {
  background: var(--primary-green);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-modern {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-light-green) 100%);
  color: var(--white);
  border: none;
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-width: 140px;
}

.btn-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-modern:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(46, 125, 50, 0.4);
  background: linear-gradient(135deg, var(--primary-light-green) 0%, var(--primary-green) 100%);
}

.btn-modern:hover::before {
  left: 100%;
}

.btn-modern i {
  transition: transform var(--transition-normal);
}

.btn-modern:hover i {
  transform: translateX(3px);
}

/* 卡片样式 */
.card {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  border: 1px solid var(--light-gray);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--light-gray);
}

.card-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background: var(--white);
  border: 2px solid var(--primary-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary-green);
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-align: center;
  color: var(--primary-green);
}

.card-description {
  color: var(--medium-gray);
  text-align: center;
  line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(76, 175, 80, 0.1);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-green);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.navbar-nav a {
  color: var(--dark-gray);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--primary-green);
}

.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

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

/* 移动端菜单按钮 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.navbar-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary-green);
  margin: 2px 0;
  transition: all var(--transition-fast);
}

/* 英雄区块样式 */
.hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('../images/hero/services-hero.png') center center/cover no-repeat;
  background-attachment: fixed;
  position: relative;
  overflow: hidden;
}
/* Full-screen hero for home page */
#home.hero {
  min-height: 100vh;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 1;
}
.hero-content {
  text-align: center;
  color: var(--white);
  z-index: 2;
  position: relative;
  max-width: 800px;
  padding: 0 var(--spacing-md);
}

.hero-title {
  font-size: clamp(2rem, 4vw + 1rem, 5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  word-wrap: break-word;
  hyphens: auto;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 2.5rem);
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
  font-weight: 300;
  line-height: 1.6;
  word-wrap: break-word;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* 数据展示区块 */
.stats {
  background: var(--light-gray);
  padding: var(--spacing-xxl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: 1.1rem;
  color: var(--medium-gray);
  font-weight: 500;
}

/* 业务模块网格 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

/* 页脚样式 */
.footer {
  background: var(--black);
  color: var(--white);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  margin-bottom: var(--spacing-md);
  font-size: 1.2rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  line-height: 1.8;
}

.footer-section a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  color: var(--white);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* 工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

/* 语言切换按钮样式 */
.language-toggle {
  margin-left: var(--spacing-md);
}

.lang-btn {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.lang-btn i {
  font-size: 1rem;
}

/* 表单样式 */
.form-group {
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--dark-gray);
  font-size: 1rem;
  line-height: 1.4;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--light-gray);
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.5;
  transition: var(--transition-base);
  background-color: var(--white);
  box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--medium-gray);
  opacity: 0.7;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.form-row .form-group {
  margin-bottom: 0;
}

/* 表单验证样式 */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: var(--error-color, #f44336);
  box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.1);
}

.form-group .error-message {
  color: var(--error-color, #f44336);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: block;
}

/* 复选框样式 */
.form-group input[type="checkbox"] {
  width: auto;
  margin-right: var(--spacing-xs);
  accent-color: var(--primary-green);
}

.form-group label.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
  cursor: pointer;
  font-weight: normal;
  margin-bottom: 0;
}

/* 联系表单特定样式 */
.contact-form {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.contact-form form {
  padding: var(--spacing-xl);
}

.contact-form-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

/* 响应式表单样式 */
@media (max-width: 767px) {
  .contact-form-section {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .form-row .form-group {
    margin-bottom: var(--spacing-md);
  }
  
  .contact-form form {
    padding: var(--spacing-lg);
  }
}

/* 徽章与流程圆点（减少大面积绿色背景的替代方案） */
.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--primary-green);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xs);
  box-shadow: var(--shadow-sm);
  font-weight: 700;
}

.timeline-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--primary-green);
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--white);
  border: 2px solid var(--primary-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-green);
  font-size: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.feature-icon i {
  color: inherit;
}