/* ==========================================================================
   CPlus Blog - UI enhancement layer
   Glassmorphism over wallpaper. Loaded after the theme CSS via inject.head.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  --ui-accent: #4a9eff;
  --ui-accent-soft: rgba(74, 158, 255, .16);
  --ui-glass-blur: 14px;
  --ui-glass-border: rgba(255, 255, 255, .09);
  --ui-glass-bg: rgba(17, 19, 25, .62);
  --ui-glass-bg-strong: rgba(15, 17, 22, .82);
  --ui-glass-bg-hover: rgba(26, 30, 38, .74);
  --ui-row-bg: rgba(255, 255, 255, .035);
  --ui-row-bg-hover: rgba(255, 255, 255, .07);
  --ui-shadow: 0 10px 30px -12px rgba(0, 0, 0, .55);
  --ui-shadow-hover: 0 16px 40px -14px rgba(0, 0, 0, .65);
  --ui-radius: 12px;
}

[data-theme='light'] {
  --ui-glass-border: rgba(15, 25, 40, .07);
  --ui-glass-bg: rgba(255, 255, 255, .78);
  --ui-glass-bg-strong: rgba(255, 255, 255, .9);
  --ui-glass-bg-hover: rgba(255, 255, 255, .92);
  --ui-row-bg: rgba(15, 25, 40, .025);
  --ui-row-bg-hover: rgba(74, 158, 255, .08);
  --ui-shadow: 0 10px 30px -14px rgba(31, 45, 61, .35);
  --ui-shadow-hover: 0 16px 40px -16px rgba(31, 45, 61, .45);
}

/* The theme paints a 70% black veil over the wallpaper in dark mode.
   Add a matching veil for light mode so glass cards keep their contrast. */
[data-theme='light'] #web_bg:before {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, .55);
  content: '';
}

/* --------------------------------------------------------------------------
   2. Glass cards
   -------------------------------------------------------------------------- */
.recent-post-item,
.card-widget,
.layout > div:first-child:not(.nc),
.type-404 .error-content {
  border: 1px solid var(--ui-glass-border);
  border-radius: var(--ui-radius);
  box-shadow: var(--ui-shadow);
  backdrop-filter: blur(var(--ui-glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--ui-glass-blur)) saturate(140%);
}

.recent-post-item {
  opacity: 1;
}

.recent-post-item:hover,
.card-widget:hover,
.type-404 .error-content:hover {
  box-shadow: var(--ui-shadow-hover);
}

/* Pagination buttons keep the glass tint but a lighter border radius */
.pagination > *:not(.space) {
  border: 1px solid var(--ui-glass-border);
  border-radius: 10px;
}

/* Fallback for browsers without backdrop-filter support */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .recent-post-item,
  .card-widget,
  .layout > div:first-child:not(.nc),
  .type-404 .error-content {
    background: var(--ui-glass-bg-strong);
  }
}

/* --------------------------------------------------------------------------
   3. Top banner / hero
   -------------------------------------------------------------------------- */
@supports (height: 100svh) {
  #page-header.full_page {
    height: 100svh;
  }
}

/* Replace the flat mask with a gradient so the title stays legible
   while the wallpaper remains visible. */
#page-header:not(.not-top-img):before {
  background: linear-gradient(
    180deg,
    rgba(8, 10, 14, .52) 0%,
    rgba(8, 10, 14, .38) 38%,
    rgba(8, 10, 14, .52) 72%,
    rgba(8, 10, 14, .86) 100%
  );
}

#page-header.full_page #site-title {
  letter-spacing: .04em;
}

#page-header.full_page #site-subtitle {
  opacity: .92;
}

/* --------------------------------------------------------------------------
   4. Navigation bar
   -------------------------------------------------------------------------- */
#page-header.nav-fixed #nav,
#page-header.fixed #nav {
  background: rgba(14, 16, 21, .58);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, .9);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}

#page-header.not-top-img #nav {
  background: var(--ui-glass-bg);
  border-bottom: 1px solid var(--ui-glass-border);
  box-shadow: var(--ui-shadow);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}

[data-theme='light'] #page-header.nav-fixed #nav,
[data-theme='light'] #page-header.fixed #nav {
  background: rgba(255, 255, 255, .68);
  border-bottom: 1px solid rgba(15, 25, 40, .06);
  box-shadow: 0 10px 30px -20px rgba(31, 45, 61, .5);
}

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

#nav .site-page:not(.child):after {
  background-color: var(--ui-accent);
}

/* --------------------------------------------------------------------------
   5. Search dialog
   -------------------------------------------------------------------------- */
.search-dialog {
  background: var(--ui-glass-bg-strong);
  border: 1px solid var(--ui-glass-border);
  box-shadow: var(--ui-shadow-hover);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

#search-mask {
  background: rgba(4, 6, 10, .55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

.local-search-input input,
.search-nav {
  background: transparent;
}

/* The decorative divider does not belong inside the search dialog */
#local-search .search-dialog hr {
  margin: 12px 0;
  border: none;
  border-top: 1px solid var(--ui-glass-border);
}

#local-search .search-dialog hr:before {
  display: none;
}

/* --------------------------------------------------------------------------
   6. File list (/files)
   -------------------------------------------------------------------------- */
#file-list h1 {
  margin-bottom: 18px;
}

.file-list {
  width: 100%;
}

.file-list-header {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
  padding: 6px 16px;
  color: var(--card-meta);
  font-size: .82rem;
  letter-spacing: .03em;
}

.file-list-header .col-name {
  flex: 1;
  padding-left: 32px;
}

.file-list-header .col-size {
  flex: 0 0 96px;
  text-align: right;
}

.file-list-header .col-mtime {
  flex: 0 0 150px;
  padding-left: 16px;
  text-align: right;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0;
  padding: 12px 16px;
  background: var(--ui-row-bg);
  border: 1px solid var(--ui-glass-border);
  border-radius: 10px;
  transition: background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.file-row:hover {
  background: var(--ui-row-bg-hover);
  border-color: var(--ui-accent-soft);
  box-shadow: 0 8px 24px -14px rgba(0, 0, 0, .55);
  transform: translateY(-1px);
}

.file-row .file-icon {
  flex: 0 0 22px;
  width: 22px;
  text-align: center;
  font-size: 1.05rem;
}

.file-row .col-name {
  display: flex;
  flex: 1;
  align-items: center;
  min-width: 0;
}

.file-row .file-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-row .file-name a {
  color: var(--font-color);
  text-decoration: none;
  font-weight: 500;
}

.file-row:hover .file-name a {
  color: var(--ui-accent);
}

.file-row .col-size {
  flex: 0 0 96px;
  text-align: right;
}

.file-row .col-mtime {
  flex: 0 0 150px;
  padding-left: 16px;
  text-align: right;
}

.file-row .file-meta {
  color: var(--card-meta);
  font-size: .82rem;
}

@media (max-width: 768px) {
  .file-row .col-mtime,
  .file-list-header .col-mtime {
    display: none;
  }
}

@media (max-width: 520px) {
  .file-row .col-size,
  .file-list-header .col-size {
    display: none;
  }

  .file-row {
    padding: 11px 12px;
  }
}

/* --------------------------------------------------------------------------
   7. Music player (floating widget, modal, /music page)
   -------------------------------------------------------------------------- */
#mm-floating {
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 100000;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--ui-glass-bg-strong);
  border: 1px solid var(--ui-glass-border);
  border-radius: 999px;
  box-shadow: var(--ui-shadow);
  color: var(--font-color);
  font-size: .82rem;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

#mm-floating .mm-f-title {
  max-width: 180px;
  overflow: hidden;
  color: var(--font-color);
  text-overflow: ellipsis;
  white-space: nowrap;
}

#mm-floating button,
#music-modal button,
.music-page button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--ui-glass-border);
  border-radius: 50%;
  color: var(--font-color);
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}

#mm-floating button:hover,
#music-modal button:hover,
.music-page button:hover {
  background: var(--ui-accent-soft);
  border-color: var(--ui-accent);
  color: var(--ui-accent);
}

#music-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(4, 6, 10, .55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#music-modal {
  overflow: auto;
  width: min(640px, 100%);
  max-height: 80vh;
  padding: 20px;
  background: var(--ui-glass-bg-strong);
  border: 1px solid var(--ui-glass-border);
  border-radius: var(--ui-radius);
  box-shadow: var(--ui-shadow-hover);
  color: var(--font-color);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
}

#music-modal .mm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

#music-modal .mm-header .mm-title {
  font-weight: 600;
  font-size: 1.05rem;
}

#music-modal .mm-header .mm-title i {
  margin-right: 6px;
  color: var(--ui-accent);
}

#music-modal .mm-list,
.music-page .music-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

#music-modal .mm-item,
.music-page .music-list .mm-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 8px 10px;
  background: var(--ui-row-bg);
  border: 1px solid var(--ui-glass-border);
  border-radius: 10px;
  transition: background .18s ease, border-color .18s ease;
}

#music-modal .mm-item:hover,
.music-page .music-list .mm-item:hover {
  background: var(--ui-row-bg-hover);
}

#music-modal .mm-item.playing,
.music-page .music-list .mm-item.playing {
  background: var(--ui-accent-soft);
  border-color: var(--ui-accent);
}

#music-modal .mm-item .mm-meta,
.music-page .music-list .mm-item .mm-meta {
  flex: 1;
  overflow: hidden;
  color: var(--font-color);
  text-overflow: ellipsis;
  white-space: nowrap;
}

#music-modal .mm-item .mm-meta .mm-name,
.music-page .music-list .mm-item .mm-meta .mm-name {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#music-modal .mm-item .mm-meta .mm-artist,
.music-page .music-list .mm-item .mm-meta .mm-artist {
  display: block;
  margin-top: 2px;
  color: var(--card-meta);
  font-size: .78rem;
}

#music-modal .mm-item button,
.music-page .music-list .mm-item button {
  flex: 0 0 auto;
}

#music-modal .mm-player {
  margin-top: 14px;
}

#music-modal .mm-player audio {
  width: 100%;
}

#music-modal .mm-footer {
  margin-top: 12px;
  text-align: right;
  font-size: .82rem;
}

#music-modal .mm-footer a {
  color: var(--ui-accent);
}

/* /music page */
.music-page {
  max-width: 860px;
}

.music-page .music-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.music-page .music-page-header h1 {
  margin: 0;
}

.music-page .music-page-header .music-page-sub {
  margin: 4px 0 0;
  color: var(--card-meta);
  font-size: .85rem;
}

.music-page .music-page-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.music-page .music-list .mm-item .mm-index {
  flex: 0 0 22px;
  color: var(--card-meta);
  font-size: .82rem;
  text-align: center;
}

.music-page .mm-item.playing .mm-index {
  color: var(--ui-accent);
}

@media (max-width: 520px) {
  #mm-floating {
    left: 10px;
    bottom: 10px;
    max-width: calc(100vw - 20px);
  }

  #mm-floating .mm-f-title {
    max-width: 96px;
  }
}

/* --------------------------------------------------------------------------
   8. Typography & details
   -------------------------------------------------------------------------- */
#article-container {
  line-height: 1.95;
}

#article-container h2,
#article-container h3 {
  letter-spacing: .01em;
}

#article-container img {
  border-radius: 8px;
}

::selection {
  background: var(--ui-accent);
  color: #fff;
}

#card-toc .toc-content .toc-link.active,
#card-toc .toc-content .toc-link:hover {
  color: var(--ui-accent);
}

#rightside > div > button,
#rightside > div > a {
  background: var(--ui-glass-bg-strong);
  color: var(--ui-accent);
  border: 1px solid var(--ui-glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

#rightside > div > button:hover,
#rightside > div > a:hover {
  background: var(--ui-accent);
  color: #fff;
}

/* --------------------------------------------------------------------------
   9. Footer
   -------------------------------------------------------------------------- */
#footer {
  background-color: transparent;
  background-image: none;
  border-top: 1px solid var(--ui-glass-border);
  background: var(--ui-glass-bg-strong);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}

#footer > *,
#footer a {
  color: var(--card-meta);
}

#footer a:hover {
  color: var(--ui-accent);
}

#footer .footer-other {
  padding: 24px 20px;
  background-color: transparent;
}

/* Smooth in-page anchor scrolling without disturbing the fixed nav */
html {
  scroll-padding-top: 76px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
}