/* Custom UI polish for Butterfly theme */

/* Header banner mask for better readability */
#page-header::before,
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26,43,77,0.55), rgba(26,43,77,0.25));
  pointer-events: none;
}

/* Site title font and subtle glow */
.site-title,
.header-title a {
  font-family: 'Noto Serif SC', serif;
  letter-spacing: 0.5px;
}

/* Recent post cards */
#recent-posts .recent-post-item,
.recent-post-item {
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(108, 155, 255, 0.18);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
  background-color: rgba(255, 255, 255, 0.86);
}

.recent-post-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(108, 155, 255, 0.25);
}

/* Sidebar glassy look */
#aside-content,
.sidebar {
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  background: rgba(255, 255, 255, 0.6);
  border-radius: 14px;
}

/* Avatar enhancement */
.card-info-avatar img,
.avatar img,
.site-author-image {
  border-radius: 50% !important;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
  border: 2px solid rgba(102, 255, 255, 0.5);
}

/* Buttons hover color harmonized with theme */
button,
.btn,
.button {
  transition: background-color .2s ease, color .2s ease, box-shadow .2s ease;
}

.btn:hover,
.button:hover,
button:hover {
  box-shadow: 0 8px 18px rgba(179, 153, 255, 0.35);
}

/* Dark theme adjustments */
[data-theme='dark'] #recent-posts .recent-post-item,
[data-theme='dark'] .recent-post-item {
  background-color: rgba(25, 25, 35, 0.55);
}

[data-theme='dark'] #aside-content,
[data-theme='dark'] .sidebar {
  background: rgba(20, 20, 30, 0.5);
}

/* Rightside tools soft rounding */
#rightside {
  border-radius: 10px;
}

/* Link color align with theme */
a:hover {
  color: #66FFFF;
}

/* Improve tag cloud aesthetics */
.tag-cloud a {
  border-radius: 999px;
  padding: 4px 10px;
  background: rgba(240, 244, 255, 0.7);
}

[data-theme='dark'] .tag-cloud a {
  background: rgba(40, 50, 80, 0.5);
}

/* 技术栈 Pin 卡片样式 */
.pin-card {
  margin-top: 8px;
  padding: 12px 12px 10px;
  border-radius: 12px;
  background: var(--card-bg, rgba(255,255,255,0.75));
  backdrop-filter: saturate(180%) blur(8px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.06);
}
.pin-title {
  font-weight: 600;
  margin-bottom: 8px;
}
.pin-title i { color: var(--theme-color, #4f46e5); margin-right: 6px; }
.pin-section { margin: 8px 0; }
.pin-label {
  display: inline-block;
  font-size: 12px;
  color: var(--text-secondary, #666);
  margin-right: 6px;
}
.pin-badge {
  display: inline-block;
  font-size: 12px;
  line-height: 20px;
  padding: 0 8px;
  border-radius: 10px;
  background: rgba(79,70,229,0.08);
  color: #333;
  margin: 3px 4px;
}
.pin-badge i { margin-right: 4px; }
.pin-note { font-size: 12px; color: var(--text-secondary, #666); margin-top: 6px; }

/* 深色模式适配 */
[data-theme="dark"] .pin-card {
  background: rgba(30,30,30,0.6);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}
[data-theme="dark"] .pin-badge {
  background: rgba(79,70,229,0.18);
  color: #ddd;
}

/* 链接型徽章样式 */
.pin-link {
  text-decoration: none;
}
.pin-link:hover {
  background: rgba(79,70,229,0.18);
  color: var(--text-color, #222);
}

/* ===== 背景增强：图案 + 渐变光晕（不引入额外 JS） ===== */
/* Butterfly 在配置 background 时会注入 #web_bg 容器，这里在其上叠加装饰层 */
#web_bg::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  /* 轻微网格图案 + 柔和主题渐变 */
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1.2px),
    linear-gradient(120deg, rgba(79,70,229,0.06), rgba(79,70,229,0.02));
  background-size: 22px 22px, 100% 100%;
  mix-blend-mode: overlay;
}

/* 右下角渐变光晕，制造层次与空间感 */
#web_bg::before {
  content: '';
  position: fixed;
  right: -12vw;
  bottom: -10vw;
  width: 36vw;
  height: 36vw;
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(79,70,229,0.16), transparent 72%);
  filter: blur(18px);
  animation: floatBlob 12s ease-in-out infinite alternate;
}

@keyframes floatBlob {
  from { transform: translate(-2vw, 1vw) scale(1); }
  to { transform: translate(2vw, -1vw) scale(1.08); }
}

/* 暗色模式下加深对比与色度 */
[data-theme='dark'] #web_bg::after {
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1.2px),
    linear-gradient(120deg, rgba(79,70,229,0.10), rgba(79,70,229,0.04));
}
[data-theme='dark'] #web_bg::before {
  background: radial-gradient(closest-side, rgba(79,70,229,0.22), transparent 72%);
  filter: blur(22px);
}

/* 移动端适配：降低装饰强度，避免遮挡内容 */
@media (max-width: 768px) {
  #web_bg::after {
    background-size: 20px 20px, 100% 100%;
    opacity: 0.9;
  }
  #web_bg::before {
    right: -18vw;
    bottom: -16vw;
    width: 44vw;
    height: 44vw;
    filter: blur(16px);
  }
}