/**
 * index.css - 量化投资系统首页样式
 * 版本: 1.0
 */

/* 英雄区域样式 */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 6rem 0;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.hero-shape {
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100%;
  height: 150px;
  background: var(--bg-body);
  clip-path: polygon(0 60%, 100% 100%, 100% 100%, 0% 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-btns .btn {
  padding: 0.8rem 2rem;
  font-weight: 600;
  margin-right: 1rem;
  border-radius: 50px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
  transition: all 0.3s;
}

.hero-btns .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.hero-btns .btn-light {
  color: var(--primary);
}

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

.hero-image img {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  transition: transform 0.5s;
}

.hero-image img:hover {
  transform: translateY(-10px);
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.hero-animation {
  opacity: 0;
}

.hero-animation.animated {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.pulse {
  animation: pulse 0.8s ease-in-out;
}

/* 特性部分 */
.features-section {
  padding: 6rem 0;
  background-color: var(--bg-body);
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.feature-card {
  position: relative;
  background-color: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  height: 100%;
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
}

.feature-icon {
  font-size: 2.5rem;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 1.5rem;
  color: var(--primary);
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.1) 0%, rgba(13, 110, 253, 0.05) 100%);
  transition: all 0.3s;
}

.feature-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.feature-text {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 数据统计部分 */
.counter-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

[data-bs-theme="dark"] .counter-section {
  background: linear-gradient(135deg, #2b3035 0%, #212529 100%);
}

.counter-item {
  text-align: center;
  padding: 2rem;
}

.counter-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.counter-value {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.counter-title {
  font-size: 1.2rem;
  color: var(--text-secondary);
}

/* 工作流程部分 */
.workflow-section {
  padding: 6rem 0;
}

.workflow-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 3rem;
}

.workflow-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-right: 1.5rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.workflow-content {
  flex-grow: 1;
}

.workflow-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.workflow-text {
  color: var(--text-secondary);
}

/* 轮播图 */
.carousel-section {
  padding: 3rem 0;
  background-color: var(--bg-card);
}

.carousel-inner {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.carousel-item {
  height: 400px;
  background-size: cover;
  background-position: center;
}

.carousel-caption {
  background: rgba(0, 0, 0, 0.5);
  border-radius: 1rem;
  padding: 1.5rem;
  backdrop-filter: blur(5px);
  bottom: 2rem;
}

.carousel-indicators {
  margin-bottom: 1rem;
}

.carousel-indicators button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 0 5px;
}

/* 价格方案 */
.pricing-section {
  padding: 6rem 0;
}

.pricing-card {
  background-color: var(--bg-card);
  border-radius: 1rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  padding: 2rem;
  text-align: center;
  transition: all 0.3s;
  height: 100%;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.pricing-header {
  padding: 2rem 0;
}

.pricing-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-value {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-period {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.pricing-features {
  padding: 1.5rem 0;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.pricing-features li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border-color-subtle);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-footer {
  padding: 1.5rem 0;
}

.pricing-btn {
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  width: 100%;
}

.pricing-badge {
  position: absolute;
  top: -10px;
  right: 20px;
  background: var(--primary);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* 客户评价 */
.testimonials-section {
  padding: 6rem 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

[data-bs-theme="dark"] .testimonials-section {
  background: linear-gradient(135deg, #2b3035 0%, #212529 100%);
}

.testimonial-card {
  background-color: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  position: relative;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  height: 100%;
}

.testimonial-quote {
  font-size: 4rem;
  position: absolute;
  top: -1rem;
  right: 1rem;
  opacity: 0.1;
  color: var(--primary);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  overflow: hidden;
  margin-right: 1rem;
}

.testimonial-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-info h5 {
  margin-bottom: 0.2rem;
  font-weight: 600;
}

.testimonial-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

/* CTA区域 */
.cta-section {
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.cta-text {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.cta-btn {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  background-color: white;
  color: var(--primary);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s;
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  background-color: var(--light);
}

/* 页脚 */
.footer {
  padding: 4rem 0 2rem;
  background-color: var(--dark);
  color: white;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.footer-logo i {
  font-size: 1.8rem;
  margin-right: 0.8rem;
}

.footer-logo span {
  font-size: 1.5rem;
  font-weight: 600;
}

.footer-text {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  margin-bottom: 2rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.8rem;
  transition: all 0.3s;
}

.footer-social a:hover {
  background-color: var(--primary);
  transform: translateY(-3px);
}

.footer-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.8rem;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.8rem;
}

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

.footer-links a:hover {
  color: white;
  padding-left: 5px;
}

.footer-links i {
  margin-right: 0.5rem;
  color: var(--primary);
}

.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact li {
  margin-bottom: 1rem;
  display: flex;
}

.footer-contact i {
  margin-right: 1rem;
  color: var(--primary);
}

.footer-bottom {
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  margin: 0 0.5rem;
}

.footer-bottom a:hover {
  color: white;
}

/* 主题开关 */
.theme-switch-wrapper {
  display: flex;
  align-items: center;
}

.theme-switch-wrapper span {
  margin-right: 10px;
  font-size: 0.9rem;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 26px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--secondary);
  transition: .4s;
  border-radius: 26px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

/* 响应式调整 */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.3rem;
  }
  
  .hero-btns .btn {
    padding: 0.7rem 1.5rem;
    margin-bottom: 1rem;
  }
  
  .section-title {
    font-size: 2.2rem;
  }
  
  .counter-value {
    font-size: 2.5rem;
  }
  
  .carousel-item {
    height: 350px;
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 4rem 0;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .hero-image {
    margin-top: 3rem;
  }
  
  .features-section, 
  .workflow-section, 
  .pricing-section, 
  .testimonials-section, 
  .cta-section {
    padding: 4rem 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .counter-item {
    margin-bottom: 2rem;
  }
  
  .carousel-item {
    height: 300px;
  }
  
  .footer {
    padding: 3rem 0 1rem;
  }
  
  .footer-column {
    margin-bottom: 2rem;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .section-subtitle {
    font-size: 1.1rem;
  }
  
  .feature-icon {
    width: 60px;
    height: 60px;
    font-size: 2rem;
  }
  
  .carousel-item {
    height: 250px;
  }
}