:root {
  --global-bg: transparent;
  --card-bg: rgba(255, 255, 255, 0.98);
  --card-strong-bg: rgba(255, 255, 255, 0.99);
  --sidebar-bg: rgba(255, 255, 255, 0.97);
  --search-bg: rgba(255, 255, 255, 0.98);
  --blockquote-bg: rgba(255, 255, 255, 0.97);
  --reward-pop: rgba(255, 255, 255, 0.98);
  --nav-bg: rgba(255, 255, 255, 0.96);
  --tree-line: rgba(0, 0, 0, 0.18);
  --bgm-cover: none;
}

[data-theme='dark'] {
  --global-bg: transparent;
  --card-bg: rgba(0, 0, 0, 0.94);
  --card-strong-bg: rgba(0, 0, 0, 0.96);
  --sidebar-bg: rgba(0, 0, 0, 0.92);
  --search-bg: rgba(0, 0, 0, 0.94);
  --blockquote-bg: rgba(0, 0, 0, 0.92);
  --reward-pop: rgba(0, 0, 0, 0.94);
  --nav-bg: rgba(0, 0, 0, 0.9);
  --tree-line: rgba(255, 255, 255, 0.2);
}

html,
body,
#body-wrap,
#content-inner {
  background: transparent !important;
}

#web_bg {
  position: fixed;
  z-index: -999;
  width: 100%;
  height: 100%;
  background-attachment: local;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transition: background-image 0.16s ease-out, background-color 0.16s ease-out;
}

#web_bg.bg-animation {
  animation: to_show 1.05s ease-out both !important;
}

#page-header.not-top-img #nav,
#page-header.nav-fixed #nav {
  background: var(--nav-bg);
}

[data-theme='dark'] #page-header.not-top-img #nav,
[data-theme='dark'] #page-header.nav-fixed #nav {
  background: var(--nav-bg);
}

#content-inner,
.layout,
#recent-posts {
  background: transparent !important;
}

#page-header,
#page-header::before,
#page-header::after {
  background: transparent !important;
  background-image: none !important;
}

#page-header {
  --mark-bg: transparent;
}

#page-header.post-bg,
#page-header.not-home-page,
#page-header.full_page {
  background: transparent !important;
  background-image: none !important;
}

#page-header.post-bg {
  position: relative;
  overflow: hidden;
  height: clamp(420px, 72vh, 760px) !important;
}

#page-header.post-bg > #nav {
  position: relative;
  z-index: 3;
}

#page-header.post-bg > #post-info {
  z-index: 1;
  bottom: clamp(88px, 12vh, 136px);
}

#page-header.post-bg > #page-site-info,
#page-header.post-bg > #site-info {
  position: relative;
  z-index: 1;
}

#page-header.post-bg #scroll-down {
  z-index: 3;
}

#page-header.post-bg #scroll-down .scroll-down-effects {
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
}

#page-header .post-top-bg-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  transition: opacity 0.22s ease-out, background-image 0.22s ease-out, background-color 0.22s ease-out;
}

#page-header.post-bg::before,
#page-header.post-bg::after,
#page-header.not-home-page::before,
#page-header.not-home-page::after,
#page-header.full_page::before,
#page-header.full_page::after {
  background: transparent !important;
  background-image: none !important;
  opacity: 0 !important;
}

#content-inner > div:first-child,
#aside-content .card-widget,
.recent-post-item,
#page,
#post,
.category-lists,
.tag-cloud-list,
.flink {
  background-color: var(--card-bg) !important;
}

#post-info,
#page-site-info,
#site-info {
  display: inline-block;
  padding: 14px 18px;
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(4px);
}

#post-info {
  background: var(--card-strong-bg);
}

#page-site-info,
#site-info {
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

#post-info {
  background: transparent !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
}

[data-theme='dark'] #page-site-info,
[data-theme='dark'] #site-info {
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.25);
}

#archive {
  background-color: var(--card-bg) !important;
  border-radius: 12px;
  padding: 20px;
}

/* Category tree styling (page + aside) */
.category-lists .category-list,
.card-categories .card-category-list {
  margin: 0;
  padding-left: 1rem;
  border-left: 1px solid var(--tree-line);
}

.category-lists .category-list-child,
.card-categories .card-category-list.child {
  margin-left: 0.6rem;
  padding-left: 0.6rem;
  border-left: 1px dashed var(--tree-line);
}

.category-lists .category-list-item,
.card-categories .card-category-list-item {
  position: relative;
  padding-left: 0.6rem;
  margin: 0.25rem 0;
}

.category-lists .category-list-item::before,
.card-categories .card-category-list-item::before {
  content: '';
  position: absolute;
  left: -0.7rem;
  top: 0.9em;
  width: 0.6rem;
  height: 1px;
  background: var(--tree-line);
}

/* Video background */
#web_bg {
  overflow: hidden;
}

#web_bg .bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

#web_bg.has-video {
  background-image: none !important;
}

/* Post/page title in header */
#page-header #post-info .post-title,
#page-header #page-info .page-title {
  color: #111 !important;
  text-shadow: none !important;
}

#page-header #post-meta,
#page-header #post-meta *,
#page-header #post-meta a {
  color: #111 !important;
  text-shadow: none !important;
}

/* Post footer cards: keep text navigation, remove cover blocks */
#pagination.pagination-post,
.relatedPosts .relatedPosts-list {
  gap: 16px;
}

#pagination.pagination-post .pagination-related,
.relatedPosts .pagination-related {
  display: flex;
  align-items: center;
  min-height: 96px;
  height: auto;
  background: var(--card-bg) !important;
  box-shadow: var(--card-box-shadow);
}

#pagination.pagination-post .pagination-related:hover,
.relatedPosts .pagination-related:hover {
  box-shadow: var(--card-hover-box-shadow);
}

#pagination.pagination-post .pagination-related .cover,
.relatedPosts .pagination-related .cover {
  display: none !important;
}

#pagination.pagination-post .pagination-related .info,
.relatedPosts .pagination-related .info {
  width: 100%;
}

#pagination.pagination-post .pagination-related .info .info-1,
#pagination.pagination-post .pagination-related .info .info-2,
.relatedPosts .pagination-related .info .info-1,
.relatedPosts .pagination-related .info .info-2 {
  position: static;
  width: auto;
  transform: none;
  padding: 18px 22px;
  color: var(--font-color);
  opacity: 1;
}

#pagination.pagination-post .pagination-related .info .info-2,
.relatedPosts .pagination-related .info .info-2 {
  display: none !important;
}

#pagination.pagination-post .pagination-related .info .info-item-1,
.relatedPosts .pagination-related .info .info-item-1 {
  color: var(--font-color);
  opacity: 0.7;
}

#pagination.pagination-post .pagination-related .info .info-item-2,
.relatedPosts .pagination-related .info .info-item-2 {
  color: var(--text-highlight-color);
}

#pagination.pagination-post .pagination-related:hover .info .info-1,
.relatedPosts .pagination-related:hover .info .info-1 {
  transform: none;
  opacity: 1;
}

/* BGM player */
#bgm-player {
  position: fixed;
  right: 24px;
  bottom: 120px;
  width: 360px;
  max-width: 90vw;
  z-index: 9999;
  display: none;
}

#bgm-player.active {
  display: block;
}

#bgm-player.has-toolbar .aplayer {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

#bgm-player .bgm-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: var(--card-bg);
  border-radius: 12px 12px 0 0;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

#bgm-player .bgm-toolbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#bgm-player .bgm-list-label {
  font-size: 13px;
  color: var(--font-color);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#bgm-player .bgm-default-btn,
#bgm-player .bgm-list-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(0, 0, 0, 0.04);
  color: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

#bgm-player .bgm-default-btn {
  background: rgba(0, 0, 0, 0.02);
}

#bgm-player .bgm-default-btn.is-set {
  border-color: rgba(0, 0, 0, 0.16);
  background: rgba(0, 0, 0, 0.08);
}

#bgm-player .bgm-list-switch:hover {
  transform: translateY(-1px);
  background: rgba(0, 0, 0, 0.08);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.12);
}

#bgm-player .bgm-list-switch:disabled {
  opacity: 0.5;
  cursor: default;
  box-shadow: none;
  transform: none;
}

[data-theme='dark'] #bgm-player .bgm-default-btn {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
}

[data-theme='dark'] #bgm-player .bgm-default-btn.is-set {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.14);
}

[data-theme='dark'] #bgm-player .bgm-toolbar {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.35);
}

[data-theme='dark'] #bgm-player .bgm-list-switch {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
}

[data-theme='dark'] #bgm-player .bgm-list-switch:hover {
  background: rgba(255, 255, 255, 0.14);
}

#bgm-player .aplayer {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

#bgm-player .aplayer .aplayer-pic {
  background-image: var(--bgm-cover) !important;
  background-size: cover !important;
  background-position: center !important;
}

#bgm-player .aplayer .aplayer-list {
  max-height: 220px;
  overflow: auto;
}

#rightside #bgm-btn,
#rightside #bg-switch-btn {
  margin-top: 8px;
}

#rightside {
  opacity: 0.9 !important;
  right: 0 !important;
  transform: translate(-58px, 0) !important;
}

@media (max-width: 900px) {
  #page-header.post-bg {
    height: clamp(360px, 64vh, 560px) !important;
  }

  #page-header.post-bg #post-info {
    bottom: 52px;
  }

  #rightside {
    transform: translate(-48px, 0) !important;
  }

  #bgm-player {
    right: 12px;
    bottom: 96px;
    width: 90vw;
  }

  #bgm-player .bgm-toolbar {
    padding: 8px 10px;
  }

  #bgm-player .bgm-list-label {
    max-width: 55vw;
  }
}

.qr-code-wrapper {
  position: relative;
  display: inline-block;
}

.qr-code-wrapper .qr-code-popup {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 10px;
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  z-index: 9999;
  min-width: 200px;
  text-align: center;
  transition: visibility 0.2s, opacity 0.2s;
}

.qr-code-wrapper:hover .qr-code-popup {
  visibility: visible;
  opacity: 1;
}

.qr-code-wrapper .qr-code-popup img {
  width: 150px;
  height: 150px;
  object-fit: contain;
  border-radius: 8px;
}

[data-theme='dark'] .qr-code-wrapper .qr-code-popup {
  background-color: #1f1f1f;
  color: white;
}

.copy-text-wrapper {
  position: relative;
  display: inline-block;
}

.copy-text-wrapper .copy-text-popup {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 10px;
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  z-index: 9999;
  min-width: 200px;
  text-align: center;
  transition: visibility 0.2s, opacity 0.2s;
}

.copy-text-wrapper:hover .copy-text-popup {
  visibility: visible;
  opacity: 1;
}

.copy-text-wrapper .copy-text-popup h3 {
  margin: 0 0 10px 0;
  font-size: 16px;
}

.copy-text-wrapper .copy-text-popup p {
  margin: 5px 0;
  font-size: 14px;
}

.copy-text-wrapper .copy-text-popup .copy-hint {
  font-size: 12px;
  color: #666;
}

[data-theme='dark'] .copy-text-wrapper .copy-text-popup {
  background-color: #1f1f1f;
  color: white;
}

[data-theme='dark'] .copy-text-wrapper .copy-text-popup .copy-hint {
  color: #aaa;
}