/* ========================================
   观陌勤蜂企业官网 - 主样式文件
   设计风格：深蓝渐变 + 科技感 + 简约大气
   ======================================== */

/* CSS变量定义 */
:root {
  /* 主色调 - 深蓝渐变 */
  --primary-dark: #1a237e;
  --primary-main: #0d47a1;
  --primary-light: #1565c0;
  --accent-blue: #2196f3;
  
  /* 辅助色 */
  --white: #ffffff;
  --light-gray: #f5f7fa;
  --medium-gray: #e0e0e0;
  --dark-gray: #424242;
  --text-primary: #212121;
  --text-secondary: #757575;
  
  /* 强调色 */
  --accent-orange: #ff6b35;
  --accent-green: #4caf50;
  
  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 过渡 */
  --transition: all 0.3s ease;
}

/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(26, 35, 126, 0.95);
  backdrop-filter: blur(10px);
  padding: 0.5rem 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-logo i {
  font-size: 1.8rem;
}

.navbar-menu {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.navbar-menu a {
  color: var(--white);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.navbar-menu a:hover {
  color: var(--accent-blue);
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: var(--transition);
}

.navbar-menu a:hover::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ========================================
   Hero区域
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-main) 50%, var(--primary-light) 100%);
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: var(--spacing-lg) var(--spacing-sm);
  max-width: 800px;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 1s ease;
}

.hero-content p {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
  animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.4s backwards;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(33, 150, 243, 0.3);
}

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

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

.btn-accent {
  background: var(--accent-orange);
  color: var(--white);
}

.btn-accent:hover {
  background: #ff8555;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

/* ========================================
   通用Section样式
   ======================================== */
.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--primary-dark);
  margin-bottom: var(--spacing-xs);
}

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

.bg-light {
  background: var(--light-gray);
}

/* ========================================
   核心优势卡片
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: 10px;
  text-align: center;
  transition: var(--transition);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.feature-card .icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-main));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-sm);
  font-size: 2rem;
  color: var(--white);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   服务概览
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.service-card {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: 10px;
  transition: var(--transition);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.service-card .icon {
  font-size: 3rem;
  color: var(--accent-blue);
  margin-bottom: var(--spacing-sm);
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
}

.service-card .btn {
  font-size: 0.9rem;
  padding: 0.6rem 1.5rem;
}

/* ========================================
   数据展示
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-md);
}

.stat-item .number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: var(--spacing-xs);
}

.stat-item .label {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ========================================
   页面横幅
   ======================================== */
.page-banner {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-main) 100%);
  padding: 8rem 0 4rem;
  text-align: center;
  color: var(--white);
}

.page-banner h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-xs);
}

.page-banner p {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* ========================================
   关于我们页面
   ======================================== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.about-image {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* 时间线 */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent-blue);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -44px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-blue);
  border: 2px solid var(--white);
}

.timeline-item .year {
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
}

.timeline-item .event {
  color: var(--text-secondary);
}

/* ========================================
   产品服务页面
   ======================================== */
.service-detail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.service-detail-card {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.service-detail-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.service-detail-card .icon {
  font-size: 2.5rem;
  color: var(--accent-blue);
  margin-bottom: var(--spacing-sm);
}

.service-detail-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.service-detail-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.service-detail-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--spacing-sm);
}

.service-detail-card .tag {
  background: var(--light-gray);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* 开发流程 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.process-step {
  text-align: center;
  padding: var(--spacing-sm);
  position: relative;
}

.process-step .step-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-main));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 auto var(--spacing-sm);
}

.process-step h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ========================================
   联系我们页面
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.contact-info-item {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.contact-info-item .icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-main));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-item .text h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
}

.contact-info-item .text p {
  color: var(--text-secondary);
}

/* 表单样式 */
.contact-form {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--medium-gray);
  border-radius: 5px;
  font-family: var(--font-family);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--primary-dark);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-column h4 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-column ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

/* ========================================
   滚动动画
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 2.8rem;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 5rem 2rem;
    transition: var(--transition);
    z-index: 999;
  }
  
  .navbar-menu.active {
    right: 0;
  }
  
  .navbar-toggle {
    display: block;
    z-index: 1001;
  }
  
  .hero-content h1 {
    font-size: 2.2rem;
  }
  
  .hero-content p {
    font-size: 1.1rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .page-banner h1 {
    font-size: 2.2rem;
  }
  
  .features-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.8rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 250px;
  }
}

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

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

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }