/* 深蓝智科TikTok跨境电商平台官网主样式文件 */

/* CSS变量定义 - 品牌色彩 */
:root {
  --primary-color: #1e3a8a;     /* 深蓝色 - 专业、可信，契合"深蓝智科"品牌 */
  --secondary-color: #3b82f6;   /* 科技蓝 - 创新、国际化 */
  --accent-color: #f59e0b;      /* 橙色 - 突出重要功能 */
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --border-color: #e5e7eb;
  
  /* 字体设置 */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  
  /* 圆角 */
  --border-radius: 12px;
  --border-radius-lg: 16px;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
  font-size: 16px;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 4px;
}

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

/* 通用类 */
.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* 按钮样式 */
.btn {
  border-radius: var(--border-radius);
  font-weight: 600;
  padding: 12px 24px;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

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

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

.btn-warning {
  background: linear-gradient(135deg, var(--accent-color), #f97316);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

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

/* Header样式 */
.header {
  background: rgba(30, 58, 138, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transition: all 0.3s ease;
}

.header.scrolled {
  background: rgba(30, 58, 138, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white) !important;
  text-decoration: none;
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}

.brand-text {
  background: linear-gradient(45deg, var(--white), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav .nav-link {
  color: var(--white) !important;
  font-weight: 500;
  margin: 0 8px;
  padding: 8px 16px !important;
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  padding: 100px 0 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.05)" points="0,1000 1000,800 1000,1000"/></svg>');
  background-size: cover;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-title .text-primary {
  color: var(--accent-color) !important;
}

.hero-subtitle {
  font-size: 1.25rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-graphic {
  width: 300px;
  height: 300px;
  background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.2));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  animation: float 3s ease-in-out infinite;
}

.hero-graphic i {
  font-size: 6rem;
  color: var(--accent-color);
}

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

/* About Section */
.about-section {
  padding: 100px 0;
  background: var(--white);
}

.advantage-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  height: 100%;
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--secondary-color);
}

.advantage-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--secondary-color);
}

.advantage-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
  transform: scale(1.1);
}

.advantage-icon i {
  font-size: 2rem;
  color: var(--white);
}

.advantage-card h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.advantage-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Features Section */
.features-section {
  padding: 100px 0;
  background: var(--bg-light);
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  height: 100%;
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--secondary-color);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-icon i {
  font-size: 2rem;
  color: var(--white);
}

.feature-card h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Product Submit Section */
.product-submit-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

.submit-process {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 3rem;
}

.process-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  min-width: 200px;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.step-content h5 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 0.875rem;
  opacity: 0.8;
  margin: 0;
}

.process-arrow {
  font-size: 1.5rem;
  color: var(--accent-color);
  font-weight: bold;
}

/* Cases Section */
.cases-section {
  padding: 100px 0;
  background: var(--white);
}

.case-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  height: 100%;
  border-left: 4px solid var(--secondary-color);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.case-stats {
  margin-bottom: 1.5rem;
}

.stat h4 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.stat p {
  color: var(--text-light);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.case-card h5 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.case-card p {
  color: var(--text-light);
  line-height: 1.6;
  font-style: italic;
}

/* Contact Section */
.contact-section {
  padding: 100px 0;
  background: var(--bg-light);
}

.contact-card {
  background: var(--white);
  padding: 3rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.wechat-qr {
  width: 200px;
  height: 200px;
  border-radius: var(--border-radius);
  border: 4px solid var(--secondary-color);
  object-fit: cover;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-dark);
  font-weight: 500;
  flex-wrap: wrap;
}

.contact-item i {
  color: var(--secondary-color);
  width: 20px;
  text-align: center;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: var(--white);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}

.footer-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 2rem;
  margin-bottom: 1rem;
  justify-content: end;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--accent-color);
}

.copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  margin: 0;
}

/* 动画增强 */
.animate__animated {
  animation-duration: 1s;
  animation-fill-mode: both;
}

/* 微信复制按钮样式 */
.btn-sm {
  padding: 4px 8px;
  font-size: 0.75rem;
}