/* 粒子动画 + 渐变流动背景 - 终极组合效果 */

/* 核心动画定义 */
@keyframes gradientFlow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes gentleFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-15px) rotate(120deg);
  }
  66% {
    transform: translateY(10px) rotate(240deg);
  }
}

@keyframes particleFloat {
  0%, 100% {
    transform: translate(0, 0);
  }
  25% {
    transform: translate(10px, -10px);
  }
  50% {
    transform: translate(-5px, 15px);
  }
  75% {
    transform: translate(-10px, -5px);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    opacity: 0.6;
    filter: brightness(1);
  }
  50% {
    opacity: 0.9;
    filter: brightness(1.2);
  }
}

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

/* 首页全屏背景容器 */
.home #page-header {
  position: relative;
  overflow: hidden;
  min-height: 88vh;
  min-height: clamp(560px, 88svh, 820px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  isolation: isolate;
}

/* 渐变流动背景层（底层） */
.home #page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  
  /* 优雅的渐变背景 */
  background: linear-gradient(
    135deg,
    #0b0909 0%,
    #171012 25%,
    #24161a 50%,
    #35201d 75%,
    #4b2d24 100%
  );
  
  /* 添加动态渐变层 */
  background-image: 
    linear-gradient(
      45deg,
      rgba(244, 114, 182, 0.12) 0%,
      transparent 25%,
      transparent 75%,
      rgba(245, 158, 11, 0.12) 100%
    ),
    linear-gradient(
      135deg,
      rgba(251, 191, 36, 0.08) 0%,
      transparent 30%,
      transparent 70%,
      rgba(34, 197, 94, 0.08) 100%
    );
  
  background-size: 300% 300%, 200% 200%;
  background-position: 0% 0%, 50% 50%;
  animation: gradientFlow 25s ease infinite, gentleFloat 40s ease-in-out infinite;
}

/* 光晕效果层（中层） */
.home #page-header::after {
  content: '';
  position: absolute;
  top: -30%;
  left: -30%;
  width: 160%;
  height: 160%;
  z-index: -2;
  
  /* 多层光晕 */
  background: 
    radial-gradient(
      circle at 20% 30%,
      rgba(244, 114, 182, 0.2) 0%,
      transparent 40%
    ),
    radial-gradient(
      circle at 70% 60%,
      rgba(245, 158, 11, 0.18) 0%,
      transparent 45%
    ),
    radial-gradient(
      circle at 40% 80%,
      rgba(255, 246, 234, 0.12) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(16, 185, 129, 0.1) 0%,
      transparent 35%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(245, 158, 11, 0.08) 0%,
      transparent 30%
    );
  
  animation: gentleFloat 50s ease-in-out infinite;
  opacity: 0.5;
  filter: blur(60px);
  mix-blend-mode: screen;
}

/* 粒子画布容器 */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.7;
}

/* 背景图片叠加（保持原有背景图） */
.home #page-header {
  background: 
    url('/img/home-bg.jpg') center/cover no-repeat,
    linear-gradient(
      rgba(12, 10, 10, 0.72),
      rgba(31, 19, 17, 0.82)
    );
  background-blend-mode: overlay;
}

[data-theme="light"] .home #page-header {
  background:
    url('/img/home-bg.jpg') center/cover no-repeat;
  background-blend-mode: normal;
}

/* 标题特效 - 粒子风格 */
.home #site-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  position: relative;
  
  /* 炫彩渐变文字 */
  background: linear-gradient(
    90deg,
    #22d3ee,
    #ec4899,
    #8b5cf6,
    #10b981,
    #f59e0b,
    #22d3ee
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textShimmer 6s linear infinite, pulseGlow 3s ease-in-out infinite;
  
  /* 文字阴影和发光 */
  text-shadow: 
    0 0 30px rgba(34, 211, 238, 0.5),
    0 0 60px rgba(236, 72, 153, 0.3),
    0 0 90px rgba(139, 92, 246, 0.2);
  
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* 标题装饰粒子 */
.home #site-title::before,
.home #site-title::after {
  content: '✦';
  position: absolute;
  color: #22d3ee;
  font-size: 1.5rem;
  animation: particleFloat 4s ease-in-out infinite;
  opacity: 0.8;
}

.home #site-title::before {
  top: -20px;
  left: -40px;
  animation-delay: 0s;
}

.home #site-title::after {
  bottom: -20px;
  right: -40px;
  animation-delay: 2s;
  color: #ec4899;
}

/* 副标题特效 */
.home #site-subtitle {
  font-size: 1.8rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
  
  /* 粒子装饰 */
  padding: 0.5rem 2rem;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  
  /* 动态边框 */
  box-shadow: 
    inset 0 0 20px rgba(34, 211, 238, 0.1),
    0 0 30px rgba(34, 211, 238, 0.2);
  
  animation: pulseGlow 4s ease-in-out infinite;
}

/* 滚动指示器 - 粒子风格 */
.home .scroll-down {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 80px;
  border: 2px solid rgba(34, 211, 238, 0.5);
  border-radius: 25px;
  background: rgba(34, 211, 238, 0.1);
  backdrop-filter: blur(15px);
  cursor: pointer;
  transition: all 0.4s ease;
  animation: gentleFloat 3s ease-in-out infinite;
  overflow: hidden;
}

/* 滚动指示器内部粒子 */
.home .scroll-down::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: #22d3ee;
  border-radius: 50%;
  animation: particleFloat 2s ease-in-out infinite;
  box-shadow: 
    0 0 10px #22d3ee,
    0 0 20px #22d3ee;
}

.home .scroll-down::after {
  content: '';
  position: absolute;
  top: 25px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: #ec4899;
  border-radius: 50%;
  animation: particleFloat 2.5s ease-in-out infinite 0.5s;
  box-shadow: 
    0 0 8px #ec4899,
    0 0 16px #ec4899;
}

.home .scroll-down:hover {
  border-color: rgba(34, 211, 238, 0.8);
  background: rgba(34, 211, 238, 0.2);
  transform: translateX(-50%) scale(1.15);
  box-shadow: 
    0 0 40px rgba(34, 211, 238, 0.6),
    0 0 80px rgba(34, 211, 238, 0.3);
}

/* 导航栏粒子效果 */
#nav {
  background: rgba(10, 14, 26, 0.9) !important;
  backdrop-filter: blur(25px) saturate(200%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15) !important;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

[data-theme="light"] #nav {
  background: rgba(255, 255, 255, 0.94) !important;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08) !important;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] #nav::before {
  background:
    linear-gradient(
      90deg,
      transparent,
      rgba(148, 163, 184, 0.14),
      transparent
    );
}

[data-theme="light"] #nav .site-name,
[data-theme="light"] #nav .site-page,
[data-theme="light"] #nav .menus_items .menus_item > a,
[data-theme="light"] #nav #search-button .search,
[data-theme="light"] #nav #toggle-menu {
  color: #334155 !important;
}

[data-theme="light"] #nav .menus_item > a::before {
  background: rgba(148, 163, 184, 0.12);
}

/* 导航栏粒子背景 */
#nav::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(
      90deg,
      transparent,
      rgba(34, 211, 238, 0.05),
      transparent
    );
  animation: textShimmer 10s linear infinite;
  z-index: -1;
}

#nav:hover {
  background: rgba(10, 14, 26, 0.95) !important;
  border-bottom-color: rgba(34, 211, 238, 0.4) !important;
  box-shadow: 
    0 10px 30px rgba(34, 211, 238, 0.2),
    0 0 20px rgba(34, 211, 238, 0.1);
}

/* 导航菜单项粒子效果 */
#nav .menus_item > a {
  position: relative;
  color: rgba(255, 255, 255, 0.9);
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

#nav .menus_item > a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(34, 211, 238, 0.1);
  border-radius: 8px;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.3s ease;
  z-index: -1;
}

#nav .menus_item > a:hover {
  color: #ffffff;
}

#nav .menus_item > a:hover::before {
  opacity: 1;
  transform: scale(1);
}

#nav .menus_item > a::after {
  content: '⚡';
  position: absolute;
  right: -15px;
  top: 50%;
  transform: translateY(-50%) scale(0);
  opacity: 0;
  transition: all 0.3s ease;
}

#nav .menus_item > a:hover::after {
  transform: translateY(-50%) scale(1);
  opacity: 1;
  animation: pulseGlow 1s ease-in-out infinite;
}

/* 移动端优化 */
@media (max-width: 768px) {
  .home #site-title {
    font-size: 2.5rem;
  }
  
  .home #site-subtitle {
    font-size: 1.2rem;
    padding: 0.3rem 1rem;
  }
  
  .home #page-header::before,
  .home #page-header::after,
  .home #site-title,
  .home #site-subtitle,
  .home .scroll-down,
  #nav::before,
  #nav .menus_item > a::after {
    animation: none !important;
  }

  .home #page-header::before {
    background-size: auto;
    background-position: center;
  }

  .home #page-header::after {
    opacity: 0.2;
    filter: none;
    mix-blend-mode: normal;
  }

  .home #site-title {
    text-shadow:
      0 0 12px rgba(34, 211, 238, 0.28),
      0 0 24px rgba(236, 72, 153, 0.14);
  }

  .home #site-subtitle {
    backdrop-filter: none;
  }

  .home .scroll-down {
    display: none;
  }

  #nav {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  /* 移动端直接关闭粒子层 */
  #particle-canvas {
    display: none !important;
  }
}

@media (max-width: 900px), (pointer: coarse) {
  .home #page-header::before,
  .home #page-header::after,
  .home #site-title,
  .home #site-subtitle,
  .home .scroll-down,
  #nav::before,
  #nav .menus_item > a::after {
    animation: none !important;
  }

  .home #page-header::after {
    filter: none;
    mix-blend-mode: normal;
  }

  #nav,
  .home #site-subtitle,
  .home .scroll-down {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }

  #particle-canvas {
    display: none !important;
  }
}

/* 性能优化：减少动画 */
@media (prefers-reduced-motion: reduce) {
  .home #page-header::before,
  .home #page-header::after,
  .home #site-title,
  .home #site-subtitle,
  .home .scroll-down,
  .home .recent-post-item,
  #nav,
  #nav::before,
  #nav .menus_item > a::after {
    animation: none !important;
  }
  
  .home .recent-post-item:hover {
    transform: none;
  }
  
  #particle-canvas {
    display: none;
  }
}

/* 暗色主题优化 */
[data-theme="dark"] .home #page-header::before {
  background: linear-gradient(
    135deg,
    #060404 0%,
    #120b0b 25%,
    #1f1112 50%,
    #2e1817 75%,
    #3f241d 100%
  );
}

[data-theme="light"] .home #page-header::before {
  background: none;
  opacity: 0;
}

[data-theme="light"] .home #page-header::after {
  background: none;
  filter: none;
  mix-blend-mode: normal;
  opacity: 0;
}

[data-theme="light"] #page-header.home-image-hero #site-title {
  color: #ffffff;
  text-shadow:
    0 14px 40px rgba(15, 23, 42, 0.34),
    0 4px 12px rgba(15, 23, 42, 0.18);
}

[data-theme="light"] .home-hero-copy__eyebrow {
  background: rgba(15, 23, 42, 0.18);
  border-color: rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

[data-theme="light"] .home-hero-copy__desc {
  color: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .home-hero-actions__btn--primary {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow:
    0 14px 28px rgba(15, 23, 42, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.32);
}