/* 引入字体库 */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400;500;600&family=Noto+Sans+SC:wght@300;400;500&family=Noto+Serif+SC:wght@300;400;500;600&family=Playfair+Display:wght@400;500;600&display=swap');

/* 全局变量定义 - 设计令牌 */
:root {
  /* 色彩方案 */
  --color-bg-primary: #FAFAFA;
  --color-bg-secondary: #F0F0F0;
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --color-accent-rose: #B76E79;
  --color-accent-blue: #3A506B;
  --color-stone: #E8E2D9;
  --color-clay: #D7C4B8;

  /* 字体系统 */
  --font-serif-en: 'Playfair Display', 'Cormorant Garamond', serif;
  --font-serif-cn: 'Noto Serif SC', serif;
  --font-sans: 'Noto Sans SC', sans-serif;

  /* 动效参数 */
  --transition-smooth: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-hover: all 0.4s ease-out;
}

/* 基础重置与全局设置 */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 字体类工具 */
.font-serif-title {
  font-family: var(--font-serif-en), var(--font-serif-cn);
}

.font-sans-body {
  font-family: var(--font-sans);
}

/* 导航栏过渡效果 */
.nav-blur {
  background-color: rgba(250, 250, 250, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
}

.nav-transparent {
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: var(--transition-smooth);
}

/* 图片交互效果 */
.img-hover-zoom {
  overflow: hidden;
  position: relative;
}

.img-hover-zoom img {
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.img-hover-zoom:hover img {
  transform: scale(1.05);
}

.img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  transition: background 0.4s ease;
}

.img-hover-zoom:hover .img-overlay {
  background: rgba(0, 0, 0, 0.03); /* 极淡的遮罩增加质感 */
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: #D1D1D1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #B0B0B0;
}

/* 瀑布流布局 (Masonry) - 用于灵感集 */
.masonry-grid {
  column-count: 1;
  column-gap: 1rem;
}

@media (min-width: 640px) {
  .masonry-grid {
    column-count: 2;
    column-gap: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .masonry-grid {
    column-count: 3;
    column-gap: 2rem;
  }
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .masonry-item {
    margin-bottom: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .masonry-item {
    margin-bottom: 2rem;
  }
}

/* 动画关键帧 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 动画工具类 */
.animate-fade-in-up {
  animation: fadeInUp 1s ease-out forwards;
}

.animate-fade-in {
  animation: fadeIn 1.2s ease-out forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-500 { animation-delay: 0.5s; }

/* 轮播图指示器 */
.carousel-indicator {
  transition: all 0.3s ease;
  width: 40px;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.4);
}

.carousel-indicator.active {
  background-color: #fff;
  width: 60px;
}

/* 汉堡菜单动画 */
.hamburger-line {
  transition: all 0.3s ease-in-out;
}

.menu-open .line-1 {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-open .line-2 {
  opacity: 0;
}

.menu-open .line-3 {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 加载骨架屏 */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #f7f7f7 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

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

/* 文本选择颜色 */
::selection {
  background: var(--color-stone);
  color: var(--color-text-primary);
}

/* 辅助布局：居中容器 */
.container-custom {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}