/* 动画效果文件 - 包含页面切换和悬停动画 */

/* ==================== 全局动画配置 ==================== */
* {
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 页面加载动画 ==================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

.fade-in-down {
  animation: fadeInDown 0.6s ease-out;
}

/* ==================== 导航栏动画 ==================== */
nav {
  animation: fadeInDown 0.6s ease-out;
}

nav .nav-links a {
  position: relative;
  transition: color 0.3s ease;
}

nav .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #B3543C;
  transition: width 0.3s ease;
}

nav .nav-links a:hover::after {
  width: 100%;
}

nav .nav-links a:hover {
  color: #666;
}

/* ==================== 轮播图动画 ==================== */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: scale(1.05);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.hero-slide {
  animation: slideIn 1.2s ease-out;
}

.hero-slide.active {
  animation: fadeIn 1s ease-out;
}

/* 轮播图文字动画 */
@keyframes textSlideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-slide h2 {
  animation: textSlideUp 1s ease-out 0.3s backwards;
}

.hero-slide p {
  animation: textSlideUp 1s ease-out 0.5s backwards;
}

/* ==================== 滚动指示器动画 ==================== */
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(10px);
  }
}

.scroll-indicator {
  animation: bounce 2s infinite;
}

/* ==================== 图片悬停动画 ==================== */
.image-hover {
  overflow: hidden;
  transition: all 0.4s ease;
}

.image-hover img {
  transition: transform 0.6s ease, filter 0.4s ease;
}

.image-hover:hover img {
  transform: scale(1.05);
  filter: brightness(0.95);
}

/* 匠心辑录页面细节图片悬停 */
.detail-item {
  transition: all 0.4s ease;
}

.detail-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.detail-item img {
  transition: transform 0.6s ease;
}

.detail-item:hover img {
  transform: scale(1.03);
}

/* ==================== 文字说明显示动画 ==================== */
.detail-text {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.detail-item:hover .detail-text {
  opacity: 1;
  transform: translateX(0);
}

/* ==================== 筛选按钮动画 ==================== */
.style-filters button {
  position: relative;
  transition: all 0.3s ease;
}

.style-filters button::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: #B3543C;
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.style-filters button:hover {
  color: #B3543C;
}

.style-filters button:hover::before,
.style-filters button.active::before {
  width: 100%;
}

.style-filters button.active {
  color: #B3543C;
  font-weight: 500;
}

/* ==================== 瀑布流项目动画 ==================== */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.masonry-item {
  animation: fadeInScale 0.6s ease-out;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.masonry-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.masonry-item img {
  transition: filter 0.4s ease;
}

.masonry-item:hover img {
  filter: brightness(0.97);
}

/* ==================== 页面切换动画 ==================== */
@keyframes pageTransition {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

body {
  animation: pageTransition 0.5s ease-out;
}

/* ==================== 滚动触发动画 ==================== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==================== 页脚动画 ==================== */
footer {
  animation: fadeInUp 0.8s ease-out;
}

footer p {
  transition: opacity 0.3s ease;
}

footer p:hover {
  opacity: 1 !important;
}

/* ==================== 加载动画 ==================== */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid #B3543C;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ==================== 图片懒加载占位动画 ==================== */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.lazy-placeholder {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* ==================== 移动端触摸反馈 ==================== */
@media (hover: none) and (pointer: coarse) {
  .detail-item:active {
    transform: scale(0.98);
  }
  
  .masonry-item:active {
    transform: scale(0.98);
  }
  
  .style-filters button:active {
    transform: scale(0.95);
  }
}

/* ==================== 性能优化 ==================== */
.will-animate {
  will-change: transform, opacity;
}

.gpu-accelerated {
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}

/* ==================== 减少动画偏好 ==================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .scroll-indicator {
    animation: none;
  }
}