/**
 * 朝霞物流官网 - 动画与交互增强
 * 包含：滚动触发动画、悬停效果、页面过渡、加载动画
 */

/* =============================================
   1. 滚动触发动画
   ============================================= */

/* 基础动画类 */
.fade-in,
.fade-in-up,
.fade-in-down,
.fade-in-left,
.fade-in-right,
.zoom-in,
.slide-in-left,
.slide-in-right {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

/* 淡入 */
.fade-in.visible {
  opacity: 1;
}

/* 淡入上移 */
.fade-in-up {
  transform: translateY(30px);
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 淡入下移 */
.fade-in-down {
  transform: translateY(-30px);
}
.fade-in-down.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 淡入左移 */
.fade-in-left {
  transform: translateX(-30px);
}
.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 淡入右移 */
.fade-in-right {
  transform: translateX(30px);
}
.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 缩放进入 */
.zoom-in {
  transform: scale(0.9);
}
.zoom-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* 滑动进入（左侧） */
.slide-in-left {
  transform: translateX(-100px);
}
.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 滑动进入（右侧） */
.slide-in-right {
  transform: translateX(100px);
}
.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 动画延迟类 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* =============================================
   2. 数字滚动动画
   ============================================= */
.counter-wrapper {
  display: inline-block;
}

.counter {
  font-variant-numeric: tabular-nums;
}

/* =============================================
   3. 按钮增强效果
   ============================================= */

/* 涟漪效果 */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* 按钮悬停增强 */
.btn-primary,
.btn-secondary {
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary::before,
.btn-secondary::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-primary:hover::before,
.btn-secondary:hover::before {
  left: 100%;
}

/* =============================================
   4. 卡片悬停效果增强
   ============================================= */

/* 3D倾斜效果 */
.service-card,
.case-card,
.advantage-card,
.stat-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.service-card:hover,
.case-card:hover,
.advantage-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 50px rgba(12, 24, 41, 0.15);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(12, 24, 41, 0.12);
}

/* 卡片图片缩放 */
.card-image,
.service-icon,
.case-image {
  overflow: hidden;
}

.card-image img,
.case-image img {
  transition: transform 0.5s ease;
}

.service-card:hover .card-image img,
.case-card:hover .case-image img {
  transform: scale(1.1);
}

/* =============================================
   5. 导航栏增强
   ============================================= */

.header {
  transition: background-color 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.header.scrolled {
  background: rgba(12, 24, 41, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* 导航链接下划线动画 */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: width 0.3s ease;
}

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

/* =============================================
   6. 页面加载动画
   ============================================= */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  text-align: center;
  color: white;
}

.loader-logo {
  font-size: 48px;
  margin-bottom: 20px;
  animation: pulse 1.5s ease-in-out infinite;
}

.loader-text {
  font-size: 18px;
  opacity: 0.8;
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  margin: 20px auto;
  overflow: hidden;
}

.loader-bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: var(--color-secondary);
  border-radius: 3px;
  animation: loading 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes loading {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(350%);
  }
}

/* =============================================
   7. 返回顶部按钮
   ============================================= */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--color-secondary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-secondary-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.6);
}

/* 进度环 */
.back-to-top .progress-ring {
  position: absolute;
  top: -2px;
  left: -2px;
  width: 54px;
  height: 54px;
  transform: rotate(-90deg);
}

.back-to-top .progress-ring-circle {
  fill: none;
  stroke: var(--color-secondary);
  stroke-width: 2;
  stroke-dasharray: 157;
  stroke-dashoffset: 157;
  transition: stroke-dashoffset 0.3s ease;
}

/* =============================================
   8. 平滑页面过渡
   ============================================= */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  z-index: 9998;
  transform: translateX(-100%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-transition.active {
  transform: translateX(0);
}

.page-transition.done {
  transform: translateX(100%);
}

/* =============================================
   9. 表单元素增强
   ============================================= */

/* 输入框焦点动画 */
.form-group input,
.form-group textarea,
.form-group select {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

/* 表单验证动画 */
.form-group.error input,
.form-group.error textarea,
.form-group.error select {
  border-color: #e74c3c;
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

/* =============================================
   10. 提示消息增强
   ============================================= */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 16px 24px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10000;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  border-left: 4px solid var(--color-accent);
}

.toast.error {
  border-left: 4px solid #e74c3c;
}

.toast.warning {
  border-left: 4px solid #f39c12;
}

/* =============================================
   11. 图片懒加载动画
   ============================================= */
img.lazy {
  opacity: 0;
  transition: opacity 0.3s ease;
}

img.lazy.loaded {
  opacity: 1;
}

/* 图片占位符 */
.image-placeholder {
  background: linear-gradient(135deg, #f0f2f7 0%, #e5e7eb 100%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* =============================================
   12. 滚动进度条
   ============================================= */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  z-index: 10001;
  transition: width 0.1s ease;
}

/* =============================================
   13. 响应式优化
   ============================================= */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
  
  .toast {
    top: auto;
    bottom: 20px;
    right: 20px;
    left: 20px;
  }
}

/* =============================================
   14. 打印样式
   ============================================= */
@media print {
  .page-loader,
  .back-to-top,
  .scroll-progress,
  .page-transition {
    display: none !important;
  }
}