/* ── Fancy Avalanche — Anthropic Aesthetic Edition ── */

/* === Base === */
html { overflow-x: hidden; }
body {
  font-family: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, 'SF Pro Display', sans-serif;
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: -0.01em;
  font-weight: 400;
}

/* === Typography === */
h1, h2, h3, h4 {
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, 'SF Pro Display', sans-serif;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.025em;
}
h1 { font-size: 2rem !important; margin: 2.25rem 0 1rem !important; padding-bottom: 0.75rem; border-bottom: 1px solid #e8dfcb; }
.dark h1 { color: #efe8d8; border-color: #3d3830; }
h2 { font-size: 1.85rem !important; font-weight: 700 !important; margin: 3rem 0 1rem !important; padding-left: 1rem; border-left: 4px solid #d4a853; color: #2d261b; }
.dark h2 { color: #ddd4c0; }
h3 { font-size: 1.4rem !important; font-weight: 650 !important; margin: 2rem 0 0.75rem !important; color: #b8892f; }
.dark h3 { color: #e2be6e; }
h4 { font-size: 1.05rem !important; font-weight: 600 !important; margin: 1.5rem 0 0.5rem !important; letter-spacing: 0.03em; color: #8c826a; text-transform: uppercase; }
.dark h4 { color: #8a8070; }

p { margin-bottom: 1.45em !important; }

/* Inline code */
:not(pre) > code {
  font-family: 'JetBrains Mono', 'SF Mono', monospace;
  font-size: 0.875em;
  padding: 0.15em 0.45em;
  border-radius: 5px;
  background: #f2ead8;
  color: #9a6f22;
}
.dark :not(pre) > code {
  background: #2f2b25;
  color: #ecd08c;
}

/* === Code blocks === */
figure.highlight {
  margin: 1.75rem 0;
  border-radius: 10px;
  background: #25221d;
  overflow-x: auto;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.04),
    0 2px 8px rgba(0,0,0,0.06),
    0 4px 16px rgba(0,0,0,0.05);
}
figure.highlight table { width: auto; min-width: 100%; margin: 0; border-collapse: collapse; }
figure.highlight td { padding: 0; border: none; vertical-align: top; }
figure.highlight td.gutter { background: rgba(0,0,0,0.3); text-align: right; user-select: none; white-space: nowrap; width: 1px; }
figure.highlight td.gutter pre { padding: 1.25rem 0.5rem; margin: 0; border-radius: 0; background: transparent; color: #52525b; font-size: 0.75em; line-height: 1.6; }
figure.highlight td.gutter .line { padding: 0 0.3rem; }
figure.highlight td.code pre { padding: 1.25rem; margin: 0; border-radius: 0; background: transparent; color: #e4e4e7; font-size: 0.875em; line-height: 1.6; white-space: pre; }
figure.highlight .line { display: block; min-height: 1.6em; }

pre {
  border-radius: 10px;
  overflow-x: auto;
  margin: 1.75rem 0;
  background: #25221d;
  box-shadow:
    0 1px 3px rgba(0,0,0,0.04),
    0 2px 8px rgba(0,0,0,0.06);
}
pre code { padding: 1.25rem; background: transparent; color: #e4e4e7; display: block; font-size: 0.875em; line-height: 1.6; white-space: pre; }

/* === Blockquotes === */
blockquote {
  border-left: 3px solid #d4a853;
  margin: 1.5rem 0;
  padding: 0.85rem 1.35rem;
  background: rgba(212, 168, 83, 0.06);
  border-radius: 0 8px 8px 0;
  color: #6b624d;
  font-style: italic;
}
.dark blockquote { color: #a69b8a; background: rgba(212,168,83,0.08); }

/* === Links === */
a { color: #b8892f; text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #d4a853; }

/* === Images === */
img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.03),
    0 2px 6px rgba(0,0,0,0.04),
    0 4px 16px rgba(0,0,0,0.05),
    0 8px 28px rgba(0,0,0,0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
img:hover {
  transform: scale(1.006);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.04),
    0 4px 12px rgba(0,0,0,0.06),
    0 8px 24px rgba(0,0,0,0.06),
    0 12px 36px rgba(0,0,0,0.05);
}

/* === Tables === */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.5rem 0;
  font-size: 0.95em;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e8dfcb;
}
.dark table { border-color: #3d3830; }
th, td { padding: 0.75rem 1rem; border-bottom: 1px solid #f2ead8; text-align: left; }
.dark th, .dark td { border-color: #2f2b25; }
th { background: #faf4e8; font-weight: 600; color: #4a4232; font-size: 0.85em; letter-spacing: 0.03em; text-transform: uppercase; }
.dark th { background: #26231e; color: #a69b8a; }

/* === Lists === */
ul, ol { padding-left: 1.5rem; margin-bottom: 1.45em; }
li { margin-bottom: 0.3em; }

/* === Horizontal rules === */
hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, #d9cfb8, transparent);
  margin: 2.5rem 0;
}
.dark hr { background: linear-gradient(to right, transparent, #4d473c, transparent); }

/* === Selection === */
::selection { background: rgba(212, 168, 83, 0.2); color: #2d261b; }
.dark ::selection { background: rgba(226, 190, 110, 0.25); color: #faf6ed; }

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: #d9cfb8; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #c4b99f; }
.dark ::-webkit-scrollbar-thumb { background: #4d473c; }
.dark ::-webkit-scrollbar-thumb:hover { background: #5d5649; }
::-webkit-scrollbar-track { background: transparent; }

/* === Article Card — Apple Liquid Glass style === */
.article-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-radius: 1.25rem;
  padding: 2rem 2.25rem;
  border: 1px solid rgba(212, 168, 83, 0.08);
  box-shadow:
    0 0 60px rgba(212, 168, 83, 0.06),
    0 0 120px rgba(212, 168, 83, 0.03),
    0 4px 24px rgba(0, 0, 0, 0.04);
}
.dark .article-card {
  background: rgba(28, 28, 30, 0.1);
  border: 1px solid rgba(212, 168, 83, 0.06);
  box-shadow:
    0 0 80px rgba(212, 168, 83, 0.05),
    0 0 160px rgba(212, 168, 83, 0.02),
    0 4px 32px rgba(0, 0, 0, 0.2);
}
@media (max-width: 640px) {
  .article-card { padding: 1.25rem 1rem; border-radius: 0.75rem; }
}

/* === Placeholder for missing images === */
.fig-placeholder {
  text-align: center;
  color: #b8a88a;
  font-size: 0.8rem;
  font-style: italic;
  padding: 1.2rem 1rem;
  margin: 0.5rem 0;
  border: 1px dashed rgba(0, 0, 0, 0.08);
  border-radius: 0.5rem;
  background: rgba(0, 0, 0, 0.015);
}
.dark .fig-placeholder {
  color: #6b6050;
  border-color: rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.015);
}

/* === Article Body === */
.article-body {
  font-size: 1.0625rem;
  line-height: 1.9;
  word-break: break-word;
  overflow-wrap: break-word;
  font-family: 'Plus Jakarta Sans', 'Inter', 'Noto Serif SC', 'Source Serif 4', Georgia, serif;
}
.article-body p { margin-bottom: 1.6em; text-align: justify; text-justify: inter-ideograph; }
.article-body ul, .article-body ol { margin-bottom: 1.5em; }
.article-body li { margin-bottom: 0.35em; }
.article-body strong { font-weight: 600; }
.article-body a { text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { text-decoration-thickness: 2px; }

/* === Glass (Anthropic-style layered transparency) === */
.glass {
  background: rgba(254, 251, 247, 0.75);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.02),
    0 2px 6px rgba(0,0,0,0.03),
    0 4px 16px rgba(0,0,0,0.04);
}
.dark .glass {
  background: rgba(26, 24, 21, 0.78);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.06),
    0 2px 6px rgba(0,0,0,0.08),
    0 4px 16px rgba(0,0,0,0.1);
}
.glass-strong {
  background: rgba(254, 251, 247, 0.85);
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  border-radius: 1.25rem;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.03),
    0 2px 6px rgba(0,0,0,0.04),
    0 4px 16px rgba(0,0,0,0.05),
    0 8px 32px rgba(0,0,0,0.04);
}
.dark .glass-strong {
  background: rgba(26, 24, 21, 0.85);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.08),
    0 2px 6px rgba(0,0,0,0.1),
    0 4px 16px rgba(0,0,0,0.12),
    0 8px 32px rgba(0,0,0,0.1);
}
.glass-card {
  border-radius: 12px;
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.03),
    0 2px 6px rgba(0,0,0,0.04);
}
.glass-card:hover {
  transform: translateY(-3px);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.04),
    0 4px 12px rgba(0,0,0,0.06),
    0 8px 24px rgba(0,0,0,0.06),
    0 14px 40px rgba(0,0,0,0.05);
}

/* === Content card backgrounds === */
footer {
  background: rgba(254, 251, 247, 0.92) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.dark footer {
  background: rgba(26, 24, 21, 0.94) !important;
}

/* === Hero === */
.hero-banner { min-height: auto; padding: 0.8rem 1rem; margin-bottom: 1rem; }
.hero-banner .cursor::after { content: '|'; animation: blink 1s ease infinite; color: #d4a853; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }
.hero-social-btn {
  display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  background: rgba(254, 251, 247, 0.75);
  border: 1px solid #e8dfcb;
  color: #8c826a;
  transition: all 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.dark .hero-social-btn {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.08);
  color: #8a8070;
}
.hero-social-btn:hover {
  color: #d4a853;
  border-color: #d4a853;
  background: rgba(212, 168, 83, 0.08);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(212, 168, 83, 0.12);
}

/* === Bento Grid === */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(160px, auto);
  gap: 1rem;
  padding: 1rem 0;
}
.bento-grid > .post-card:nth-child(8n+1) { grid-column: span 2; grid-row: span 2; }
.bento-grid > .post-card:nth-child(8n+4) { grid-column: span 2; }
.bento-grid > .post-card:nth-child(8n+6) { grid-row: span 2; }
.bento-grid > .post-card:nth-child(8n+8) { grid-column: span 2; }
@media (max-width: 1023px) {
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .bento-grid > .post-card:nth-child(n) { grid-column: span 1 !important; grid-row: span 1 !important; }
  .bento-grid > .post-card:first-child { grid-column: span 2 !important; grid-row: span 2 !important; }
}
@media (max-width: 640px) {
  .bento-grid { grid-template-columns: 1fr; }
  .bento-grid > .post-card:nth-child(n) { grid-column: span 1 !important; grid-row: span 1 !important; }
}

/* === Post Card === */
.post-card { position: relative; overflow: hidden; padding: 1.5rem; cursor: pointer; }
.post-card.featured {
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.06), #fefbf7);
}
.dark .post-card.featured {
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.12), #1a1815);
}
.post-card .card-title {
  font-size: 1.15rem; font-weight: 600; line-height: 1.35; letter-spacing: -0.015em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.post-card.featured .card-title { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
.post-card .card-excerpt {
  font-size: 0.875rem; line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

/* === Reading Progress === */
.reading-progress { position: fixed; top: 0; left: 0; width: 100%; height: 2px; z-index: 100; }
.reading-progress::after {
  content: ''; display: block; height: 100%;
  background: linear-gradient(90deg, #d4a853, #e2be6e);
  width: var(--progress, 0%);
  transition: width 0.1s linear;
}

/* === TOC horizontal (legacy) === */
.toc-horizontal { line-height: 1.6; }
.toc-horizontal ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.2rem 0; }
.toc-horizontal li { margin: 0; display: inline; }
.toc-horizontal a {
  display: inline-block; padding: 0.2rem 0.6rem; border-radius: 5px;
  font-size: 0.8rem; color: #8c826a; transition: all 0.2s; white-space: nowrap;
}
.toc-horizontal a::before { content: '# '; opacity: 0.4; }
.dark .toc-horizontal a { color: #8a8070; }
.toc-horizontal a:hover { color: #d4a853; background: rgba(212, 168, 83, 0.06); }
.toc-horizontal .toc-child { display: none; }

/* === Post Layout — sidebar TOC === */
.post-layout {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}
.toc-sidebar {
  width: 210px;
  flex-shrink: 0;
  display: block;
}
.toc-sticky {
  position: sticky;
  top: 5.5rem;
  padding: 1.25rem 1.1rem;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-radius: 0.85rem;
  border: 1px solid rgba(212, 168, 83, 0.08);
  box-shadow:
    0 0 60px rgba(212, 168, 83, 0.06),
    0 0 120px rgba(212, 168, 83, 0.03),
    0 4px 24px rgba(0, 0, 0, 0.04);
}
.dark .toc-sticky {
  background: rgba(28, 28, 30, 0.1);
  border: 1px solid rgba(212, 168, 83, 0.06);
  box-shadow:
    0 0 80px rgba(212, 168, 83, 0.05),
    0 0 160px rgba(212, 168, 83, 0.02),
    0 4px 32px rgba(0, 0, 0, 0.2);
}
.toc-sidebar-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #b8892f;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(212, 168, 83, 0.25);
}
.dark .toc-sidebar-title { color: #e2be6e; border-color: rgba(212, 168, 83, 0.2); }

/* === TOC Vertical — sidebar items === */
.toc-vertical ol {
  list-style: none;
  padding-left: 0;
  margin: 0;
}
.toc-vertical li {
  display: block;
  margin-bottom: 0.5rem;
  line-height: 1.55;
}
.toc-vertical .toc-number {
  color: #b8892f;
  font-weight: 600;
  margin-right: 0.15rem;
}
.toc-vertical a {
  display: inline;
  font-size: 0.78rem;
  color: #5c5240;
  line-height: inherit;
  transition: color 0.2s;
  text-decoration: none;
}
.dark .toc-vertical a { color: #b8a890; }
.toc-vertical a:hover,
.toc-vertical a.active {
  color: #d4a853;
}
.toc-vertical .toc-child {
  padding-left: 0.6rem;
  margin-top: 0.25rem;
}
.toc-vertical .toc-child ol { list-style: disc; }
.toc-vertical .toc-child li { margin-bottom: 0.3rem; }
.toc-vertical .toc-child a { font-size: 0.72rem; color: #8c826a; }
.dark .toc-vertical .toc-child a { color: #8a8070; }

.post-main {
  flex: 1;
  min-width: 0;
}

@media (max-width: 1024px) {
  .post-layout { flex-direction: column; }
  .toc-sidebar {
    width: 100%;
    order: -1;
  }
  .toc-sticky {
    position: static;
    padding: 0.75rem 1rem;
  }
  .toc-vertical ol {
    padding-left: 1.2rem;
  }
  .toc-vertical li { margin-bottom: 0.2rem; }
}

/* === Search === */
.search-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none; align-items: flex-start; justify-content: center; padding-top: 15vh;
}
.search-overlay.active { display: flex; }
.search-panel { width: 90%; max-width: 560px; border-radius: 14px; overflow: hidden; }
.search-input-wrap { display: flex; align-items: center; gap: 0.75rem; padding: 1rem 1.25rem; }
.search-panel input { flex: 1; background: transparent; border: none; outline: none; font-size: 1rem; font-family: inherit; }
.search-panel input::placeholder { color: #a1a1aa; }
.search-results { max-height: 50vh; overflow-y: auto; padding: 0.5rem; }
.search-result { display: block; padding: 0.75rem 1rem; border-radius: 8px; transition: background 0.15s; }
.search-result:hover { background: #faf4e8; }
.dark .search-result:hover { background: #26231e; }

/* === Timeline === */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 1px; background: #e8dfcb; }
.dark .timeline::before { background: #3d3830; }
.timeline-year::before {
  content: ''; position: absolute; left: -2.1rem; top: 0.5rem;
  width: 10px; height: 10px; border-radius: 50%;
  background: #d4a853;
  border: 2px solid #fefbf7;
  box-shadow: 0 0 0 2px rgba(212, 168, 83, 0.2);
}
.dark .timeline-year::before { border-color: #1a1815; }
.timeline-item { border-bottom: 1px solid #f2ead8; }
.dark .timeline-item { border-color: #2f2b25; }

/* === Tag Cloud === */
.tag-cloud a {
  padding: 0.4rem 1rem; border-radius: 999px; font-weight: 500;
  border: 1px solid transparent; transition: all 0.25s;
}
.tag-cloud a:hover { border-color: #d4a853; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(212,168,83,0.1); }

/* === Pagination === */
.pagination { display: flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 2rem 0; }
.pagination a, .pagination span {
  display: flex; align-items: center; justify-content: center;
  min-width: 2.5rem; height: 2.5rem; padding: 0 0.75rem;
  border-radius: 8px; font-size: 0.9rem; font-weight: 500;
  transition: all 0.2s;
}
.pagination a:hover { border-color: #d4a853; color: #d4a853; background: rgba(212, 168, 83, 0.06); }
.pagination .page-number.current { background: #d4a853; color: #fff; }

/* === Back to Top === */
#back-to-top { transition: opacity 0.3s ease, visibility 0.3s ease; }
#back-to-top.visible { opacity: 1; visibility: visible; }

/* === Code Copy === */
.code-wrap { position: relative; }
.code-copy {
  position: absolute; top: 0.75rem; right: 0.75rem;
  padding: 0.35rem 0.7rem; font-size: 0.7rem; border-radius: 5px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #a1a1aa; cursor: pointer; opacity: 0;
  transition: opacity 0.2s, color 0.2s, border-color 0.2s;
  background: rgba(37, 34, 29, 0.94);
  backdrop-filter: blur(6px);
  font-family: 'Inter', sans-serif; letter-spacing: 0.02em;
}
.code-wrap:hover .code-copy { opacity: 1; }
.code-copy:hover { color: #fff; border-color: rgba(255, 255, 255, 0.25); }
.code-copy.copied { color: #d4a853; border-color: #d4a853; }

/* === Terminal Quote Box === */
.terminal-box {
  background: rgba(13, 17, 23, 0.55);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255,255,255,0.05);
  font-family: 'Press Start 2P', 'ZCOOL QingKe HuangYou', monospace;
  font-size: 0.75rem; line-height: 2; image-rendering: pixelated;
}
.terminal-header {
  display: flex; align-items: center; gap: 6px;
  padding: 0.5rem 0.85rem;
  background: rgba(22, 27, 34, 0.6);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.terminal-dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red    { background: #ff5f56; box-shadow: 0 0 4px rgba(255,95,86,0.4); }
.dot-yellow { background: #ffbd2e; box-shadow: 0 0 4px rgba(255,189,46,0.4); }
.dot-green  { background: #27c93f; box-shadow: 0 0 4px rgba(39,201,63,0.4); }
.terminal-title { margin-left: 0.5rem; color: #8b949e; font-size: 0.6rem; font-family: 'JetBrains Mono', monospace; }
.terminal-body {
  padding: 0.75rem 1rem 0.85rem; color: #c9d1d9;
  font-family: 'ZCOOL QingKe HuangYou', 'Press Start 2P', monospace;
  font-size: 0.82rem; line-height: 2;
}
.terminal-line { display: flex; align-items: center; gap: 0.5rem; font-family: 'Press Start 2P', monospace; font-size: 0.7rem; }
.terminal-prompt { color: #27c93f; font-weight: 700; flex-shrink: 0; }
.terminal-cmd { color: #58a6ff; }
.terminal-output { color: #e6edf3; margin: 0.4rem 0 0.7rem; min-height: 2em; padding-left: 0.15rem; font-family: 'ZCOOL QingKe HuangYou', 'Press Start 2P', monospace; font-size: 0.85rem; }
.terminal-cursor { color: #c9d1d9; animation: blink 1s step-end infinite; }

/* === Fullscreen BG with overlay === */
.bg-fullscreen {
  position: fixed; inset: 0; z-index: -1;
  background: center/cover no-repeat fixed;
  transition: opacity 0.8s ease;
}
.bg-fullscreen::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(254, 251, 247, 0.6);
}
.dark .bg-fullscreen::after { background: rgba(0, 0, 0, 0.88); }

/* === BG nav buttons === */
.bg-nav-btn {
  position: fixed !important; top: 50% !important; transform: translateY(-50%) !important; z-index: 9999 !important;
  width: 44px; height: 44px; border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.3) !important;
  background: rgba(0, 0, 0, 0.35) !important; color: #fff !important;
  font-size: 1.2rem; cursor: pointer; transition: all 0.3s ease;
  display: flex !important; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  outline: none; text-decoration: none; line-height: 1;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.bg-nav-btn:hover {
  background: rgba(0, 0, 0, 0.55) !important;
  border-color: #fff !important;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.4);
}
#bg-prev { left: 1.5rem !important; }
#bg-next { right: 1.5rem !important; }
@media (max-width: 640px) {
  .bg-nav-btn { width: 34px; height: 34px; font-size: 1rem; }
  #bg-prev { left: 0.75rem !important; }
  #bg-next { right: 0.75rem !important; }
}

/* === BG dot indicators === */
#bg-dots { display: none; }
#bg-dots button {
  padding: 0; border: 2px solid rgba(255,255,255,0.4); background: rgba(0,0,0,0.5);
  border-radius: 50%; cursor: pointer; transition: all 0.3s; width: 10px; height: 10px;
}
#bg-dots button:hover, #bg-dots button.active { background: #fff; border-color: #fff; }

/* === Font Switching === */
[data-font="inter"] body,
[data-font="inter"] .post-card .card-title,
[data-font="inter"] .article-body {
  font-family: 'Inter', system-ui, -apple-system, 'SF Pro Display', sans-serif !important;
}
[data-font="inter"] h1, [data-font="inter"] h2, [data-font="inter"] h3, [data-font="inter"] h4 {
  font-family: 'Inter', -apple-system, 'SF Pro Display', sans-serif !important;
}

[data-font="source-serif"] body,
[data-font="source-serif"] .post-card .card-title,
[data-font="source-serif"] .article-body {
  font-family: 'Source Serif 4', 'Noto Serif SC', Georgia, 'Iowan Old Style', serif !important;
}
[data-font="source-serif"] h1, [data-font="source-serif"] h2,
[data-font="source-serif"] h3, [data-font="source-serif"] h4 {
  font-family: 'Source Serif 4', 'Noto Serif SC', Georgia, serif !important;
}

/* Font switcher button */
#font-switcher {
  position: relative;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

/* === Accessibility === */
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .terminal-cursor { animation: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .glass,.glass-strong { backdrop-filter: none; -webkit-backdrop-filter: none; }
}