/* 
* Kerrystone Website Optimization Styles
* 视觉优化与性能改进
*/

/* 优化渐变与颜色 */
:root {
  /* 不再重复定义基本变量，使用styles.css中的变量 */
  
  /* 新增渐变与阴影效果 */
  --enhanced-gradient: linear-gradient(135deg, #1890ff, #00c1d4, #36cfc9);
  --hover-shadow: 0 15px 35px rgba(24, 144, 255, 0.15);
  --card-shadow: 0 8px 20px rgba(0, 21, 41, 0.06);
}

/* 改进背景效果与动画 */
.geometric-bg {
  opacity: 0.3;
  animation: float 15s infinite ease-in-out;
  filter: blur(2px);
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.geometric-bg.left {
  animation-delay: -7s;
}

/* 滚动显示动画 - 改进版本，默认可见 */
.animate-on-scroll {
  opacity: 1; /* 默认可见 */
  transform: translateY(0); /* 默认不移动 */
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* 只有当添加fade-in-animation类时，才会使用动画效果 */
.fade-in-animation {
  opacity: 0;
  transform: translateY(30px);
}

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

/* 改进卡片效果 */
.feature-card, .team-member, .client-case {
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  overflow: visible; /* 修改为visible以确保图标在悬停时不会消失 */
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feature-card:hover, .team-member:hover, .client-case:hover {
  transform: translateY(-12px);
  box-shadow: var(--hover-shadow);
}

/* 改进按钮样式 */
.btn {
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: 8px;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.btn-primary {
  background: var(--enhanced-gradient);
  background-size: 200% 200%;
  animation: gradientShift 5s infinite ease;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn-primary:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 10px 25px rgba(24, 144, 255, 0.25);
}

/* 改进导航菜单效果 */
.main-nav ul li a {
  position: relative;
  padding: 10px 5px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.main-nav ul li a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--enhanced-gradient);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.main-nav ul li a.active:after,
.main-nav ul li a:hover:after {
  width: 100%;
}

/* 改进统计数字区域 */
.stat-number {
  position: relative;
  display: inline-block;
  font-weight: 700;
  background: linear-gradient(to right, #fff, rgba(255,255,255,0.8));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 改进视频占位符 */
.video-placeholder {
  background: linear-gradient(135deg, #001529 0%, #004d99 100%);
  overflow: hidden;
}

.video-placeholder:before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: rotateBg 20s linear infinite;
  opacity: 0.3;
}

@keyframes rotateBg {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.play-button {
  z-index: 2;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.video-placeholder:hover .play-button {
  transform: scale(1.15);
  filter: drop-shadow(0 0 10px rgba(255,255,255,0.5));
}

/* 改进团队成员卡片 */
.member-photo {
  transition: all 0.4s ease;
  box-shadow: 0 5px 15px rgba(24, 144, 255, 0.2);
}

.team-member:hover .member-photo {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(24, 144, 255, 0.3);
}

.photo-placeholder {
  background: var(--enhanced-gradient);
  background-size: 200% 200%;
  animation: gradientShift 5s infinite ease;
}

/* 改进页脚样式 */
.footer {
  position: relative;
  overflow: hidden;
}

.footer:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--enhanced-gradient);
}

/* 响应式优化 */
@media (max-width: 768px) {
  .hero-title {
    font-size: 32px;
  }
  
  .feature-card:hover, .team-member:hover, .client-case:hover {
    transform: translateY(-6px);
  }
}

/* 添加深色模式支持 */
@media (prefers-color-scheme: dark) {
  body:not(.light-mode) {
    --text-color: #e0e0e0;
    --heading-color: #f0f5ff;
    --gray-bg: #1a1a2e;
    background-color: #121212;
  }
  
  body:not(.light-mode) .header,
  body:not(.light-mode) .feature-card,
  body:not(.light-mode) .client-case {
    background: #1a1a2e;
    color: #e0e0e0;
  }
  
  body:not(.light-mode) .feature-card p,
  body:not(.light-mode) .client-result {
    color: #b0b0b0;
  }
}