@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;600&display=swap');

body {
  font-family: 'Noto Serif SC', serif;
  background-color: #fcfbf9;
  color: #333;
  position: relative;
  min-height: 100vh;
}

/* 全局背景图层 */
#global-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  transition: opacity 1s ease-in-out;
  opacity: 0; /* 默认隐藏，加载后显示 */
}

/* 背景遮罩层，保证文字可读性 */
#global-bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: rgba(252, 251, 249, 0.6); /* 默认遮罩颜色，可以根据背景图调整 */
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

/* 粒子容器 */
#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* 调整主要内容的层级，确保在粒子之上 */
nav, main, footer {
  position: relative;
  z-index: 10;
}

.fade-in {
  animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.nav-link {
  transition: all 0.3s ease;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: #8b7355;
  transition: width 0.3s ease;
}

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

.glass-panel {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.pet-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}