/* ============================================================
   Sowink · Frosted Glass Skin
   Minimalist glassmorphism for the Hexo Fluid theme.
   Loaded via theme `custom_css`. Fully reversible.
   ============================================================ */

/* ---- 1. Glass tokens --------------------------------------- */
:root {
  --glass-bg:         rgba(255, 255, 255, 0.55);
  --glass-bg-strong:  rgba(255, 255, 255, 0.72);
  --glass-bg-code:    rgba(255, 255, 255, 0.45);
  --glass-brd:        rgba(255, 255, 255, 0.65);
  --glass-hi:         rgba(255, 255, 255, 0.90);
  --glass-shadow:     0 8px 32px rgba(31, 58, 95, 0.12), 0 2px 8px rgba(31, 58, 95, 0.06);
  --glass-blur:       18px;
  --navbar-glass:     rgba(47, 65, 84, 0.55);
  --glass-brand:      #4a6fa5;
  --glass-inset:      rgba(255, 255, 255, 0.35);
  --glass-chip:       rgba(255, 255, 255, 0.55);
}

/* Dark palette — follows Fluid's own dark selectors */
[data-user-color-scheme="dark"] {
  --glass-bg:         rgba(38, 46, 62, 0.50);
  --glass-bg-strong:  rgba(38, 46, 62, 0.72);
  --glass-bg-code:    rgba(24, 30, 42, 0.55);
  --glass-brd:        rgba(255, 255, 255, 0.10);
  --glass-hi:         rgba(255, 255, 255, 0.07);
  --glass-shadow:     0 8px 32px rgba(0, 0, 0, 0.38), 0 2px 8px rgba(0, 0, 0, 0.25);
  --navbar-glass:     rgba(31, 49, 68, 0.55);
  --glass-brand:      #6f9bd8;
  --glass-inset:      rgba(255, 255, 255, 0.05);
  --glass-chip:       rgba(24, 30, 42, 0.60);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-user-color-scheme]) {
    --glass-bg:         rgba(38, 46, 62, 0.50);
    --glass-bg-strong:  rgba(38, 46, 62, 0.72);
    --glass-bg-code:    rgba(24, 30, 42, 0.55);
    --glass-brd:        rgba(255, 255, 255, 0.10);
    --glass-hi:         rgba(255, 255, 255, 0.07);
    --glass-shadow:     0 8px 32px rgba(0, 0, 0, 0.38), 0 2px 8px rgba(0, 0, 0, 0.25);
    --navbar-glass:     rgba(31, 49, 68, 0.55);
    --glass-brand:      #6f9bd8;
    --glass-inset:      rgba(255, 255, 255, 0.05);
    --glass-chip:       rgba(24, 30, 42, 0.60);
  }
}

/* ---- 2. Ambient light-field (the signature) --------------- */
/* A calm cool-porcelain wash with three low-saturation orbs the
   frosted panels refract. Fixed, so scrolling stays serene.     */
body {
  background: linear-gradient(135deg, #eaeef5 0%, #e6ebf3 42%, #edeaf3 100%) !important;
}
[data-user-color-scheme="dark"] body {
  background: linear-gradient(135deg, #0f131c 0%, #141a25 45%, #141320 100%) !important;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-user-color-scheme]) body {
    background: linear-gradient(135deg, #0f131c 0%, #141a25 45%, #141320 100%) !important;
  }
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(42rem 42rem at 12% 6%,  rgba(120, 160, 225, 0.28), transparent 60%),
    radial-gradient(38rem 38rem at 90% 20%, rgba(180, 165, 225, 0.24), transparent 62%),
    radial-gradient(36rem 36rem at 68% 96%, rgba(140, 195, 220, 0.20), transparent 60%);
}
[data-user-color-scheme="dark"] body::before {
  background:
    radial-gradient(42rem 42rem at 12% 6%,  rgba(70, 105, 175, 0.24), transparent 60%),
    radial-gradient(38rem 38rem at 90% 20%, rgba(120, 95, 175, 0.18), transparent 62%),
    radial-gradient(36rem 36rem at 68% 96%, rgba(60, 130, 150, 0.16), transparent 60%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-user-color-scheme]) body::before {
    background:
      radial-gradient(42rem 42rem at 12% 6%,  rgba(70, 105, 175, 0.24), transparent 60%),
      radial-gradient(38rem 38rem at 90% 20%, rgba(120, 95, 175, 0.18), transparent 62%),
      radial-gradient(36rem 36rem at 68% 96%, rgba(60, 130, 150, 0.16), transparent 60%);
  }
}

/* ---- 3. The main board — primary reading surface ---------- */
#board {
  background: var(--glass-bg-strong) !important;
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border: 1px solid var(--glass-brd);
  border-radius: 18px !important;
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi) !important;
}

/* ---- 4. Sidebar (TOC / category) as a floating glass card -- */
.sidebar {
  background: var(--glass-bg) !important;
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border: 1px solid var(--glass-brd);
  border-radius: 16px;
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
  padding: 1.6rem 1.25rem !important;
}

/* ---- 5. Navbar — transparent at top, frosted when scrolled - */
.top-nav-collapse,
.navbar-col-show,
.navbar .dropdown-collapse,
.navbar .dropdown-menu {
  background-color: var(--navbar-glass) !important;
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  box-shadow: 0 4px 24px rgba(31, 58, 95, 0.14) !important;
}

/* ---- 6. Code blocks — glassy but crisp (text isn't blurred) */
.markdown-body pre,
.markdown-body .highlight,
figure.highlight,
.markdown-body pre > code {
  background: var(--glass-bg-code) !important;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border: 1px solid var(--glass-brd);
  border-radius: 12px;
}
.markdown-body pre > code {
  border: 0;
  border-radius: 0;
}
.markdown-body pre {
  box-shadow: inset 0 1px 0 var(--glass-hi);
}

/* Inline code & tables share the frosted tint */
.markdown-body table tr,
.markdown-body table th {
  background: transparent !important;
}
.markdown-body table thead tr,
.markdown-body table tr:nth-child(2n) {
  background: rgba(255, 255, 255, 0.28) !important;
}
[data-user-color-scheme="dark"] .markdown-body table tr:nth-child(2n),
[data-user-color-scheme="dark"] .markdown-body table thead tr {
  background: rgba(255, 255, 255, 0.05) !important;
}

/* ---- 7. Search modal ------------------------------------- */
.modal-content {
  background: var(--glass-bg-strong) !important;
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--glass-brd) !important;
  border-radius: 18px !important;
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi) !important;
}

/* ---- 8. Quiet interactions -------------------------------- */
.index-card {
  transition: transform 0.25s ease;
}
.index-card:hover {
  transform: translateY(-3px);
}
/* single restrained accent on the active TOC / links */
.tocbot-active-link,
.toc-list-item.is-active-li > .tocbot-link {
  color: var(--glass-brand) !important;
}

/* ---- 9. Controls — same glass language as the panels ------ */
/* Scroll-to-top: a floating glass pill, not a solid chip */
#scroll-top-button {
  background: var(--glass-bg-strong) !important;
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid var(--glass-brd);
  border-radius: 12px !important;
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi) !important;
}

/* Pagination: hovered pages get a glass pill, current page the accent */
.pagination .page-number:hover {
  background-color: var(--glass-inset) !important;
  border-radius: 10px;
}
.pagination .current {
  background-color: var(--glass-inset) !important;
  border-radius: 10px;
  color: var(--glass-brand) !important;
  font-weight: 600;
}

/* Copy-code: a small frosted chip so it stays legible on glassy code */
.markdown-body pre > .copy-btn {
  padding: 0.15rem 0.4rem;
  border-radius: 8px;
  transition: background-color 0.2s ease-in-out;
}
.markdown-body pre:hover > .copy-btn {
  background-color: var(--glass-chip);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

/* Copyright box: a soft inset frosted panel */
.license-box {
  background-color: var(--glass-inset) !important;
  border: 1px solid var(--glass-brd);
  border-radius: 12px !important;
  box-shadow: inset 0 1px 0 var(--glass-hi);
}

/* Search field: retune the focus accent to the slate brand */
.md-form input[type]:focus:not([readonly]) {
  border-bottom: 1px solid var(--glass-brand) !important;
  box-shadow: 0 1px 0 0 var(--glass-brand) !important;
  -webkit-box-shadow: 0 1px 0 0 var(--glass-brand) !important;
}
.md-form input[type]:focus:not([readonly]) + label {
  color: var(--glass-brand) !important;
}

/* Navbar links: a quiet rounded hover target (desktop only) */
@media (min-width: 992px) {
  .navbar .nav-item .nav-link {
    border-radius: 10px;
    transition: color 0.2s ease-in-out, background-color 0.2s ease-in-out;
  }
  .navbar .nav-item .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.14);
  }
}

/* ---- 10. In-content components — frost the inner blocks --- */
/* Blockquotes: a frosted quote panel with one accent edge */
.markdown-body blockquote {
  background: var(--glass-inset);
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  backdrop-filter: blur(6px) saturate(140%);
  border-left: 3px solid var(--glass-brand);
  border-radius: 0 10px 10px 0;
  padding: 0.6rem 1rem;
}

/* Note / tip callouts: keep the meaning color, add glass material.
   Borders are left untouched so the semantic left bar survives. */
.note {
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  backdrop-filter: blur(6px) saturate(140%);
  border-radius: 10px;
}

/* Collapsible folds: frosted card that clips its rounded corners */
.fold {
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  backdrop-filter: blur(6px) saturate(140%);
  border-radius: 10px;
  overflow: hidden;
}

/* Inline code: a softer frosted chip */
.markdown-body code {
  border-radius: 6px;
  padding: 0.15em 0.4em;
}
.markdown-body pre > code {
  padding: 0;
}

/* Friend-link cards: real glass tiles that lift on hover */
.links .card-body {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  border: 1px solid var(--glass-brd);
  border-radius: 14px;
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.links .card-body:hover {
  transform: translateY(-3px);
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
}

/* ---- 11. Fallbacks & accessibility ------------------------ */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :root {
    --glass-bg:        rgba(255, 255, 255, 0.90);
    --glass-bg-strong: rgba(255, 255, 255, 0.96);
    --glass-bg-code:   rgba(246, 248, 250, 0.98);
  }
  [data-user-color-scheme="dark"] {
    --glass-bg:        rgba(38, 46, 62, 0.94);
    --glass-bg-strong: rgba(38, 46, 62, 0.97);
    --glass-bg-code:   rgba(24, 30, 42, 0.97);
  }
}

@media (prefers-reduced-motion: reduce) {
  .index-card,
  .links .card-body { transition: none; }
  .index-card:hover,
  .links .card-body:hover { transform: none; }
}