/* =============================================================================
   Prometheus Dotfiles — Tokyo Night stylesheet
   ============================================================================= */

/* ── CSS variables: dark (default) ─────────────────────────────────────────── */
:root {
  --tn-bg:       #1a1b26;
  --tn-bg2:      #24283b;
  --tn-bg3:      #2f3549;
  --tn-bg-code:  #1e2030;
  --tn-border:   #414868;
  --tn-fg:       #a9b1d6;
  --tn-sub:      #7a85b8;
  --tn-blue:     #7aa2f7;
  --tn-purple:   #bb9af7;
  --tn-cyan:     #7dcfff;
  --tn-green:    #9ece6a;
  --tn-yellow:   #e0af68;
  --tn-red:      #f7768e;
  --tn-orange:   #ff9e64;
  --tn-blue-r:   122; --tn-blue-g: 162; --tn-blue-b: 247;
  --tn-hero-gradient: linear-gradient(135deg, #7aa2f7 0%, #bb9af7 50%, #7dcfff 100%);
  --tn-theme-transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* ── CSS variables: light (Tokyo Night Day) ─────────────────────────────────── */
.light-mode {
  --tn-bg:       #e1e2e7;
  --tn-bg2:      #d0d1db;
  --tn-bg3:      #c4c5cd;
  --tn-bg-code:  #bbbdc8;
  --tn-border:   #9699b6;
  --tn-fg:       #343b58;
  --tn-sub:      #6172b0;
  --tn-blue:     #2e7de9;
  --tn-purple:   #7847bd;
  --tn-cyan:     #007197;
  --tn-green:    #587539;
  --tn-yellow:   #8c6c3e;
  --tn-red:      #f52a65;
  --tn-orange:   #b15c00;
  --tn-blue-r:   46; --tn-blue-g: 125; --tn-blue-b: 233;
  --tn-hero-gradient: linear-gradient(135deg, #2e7de9 0%, #7847bd 50%, #007197 100%);
}

/* ── Tailwind class overrides for light mode ────────────────────────────────── */
.light-mode .bg-tn-bg    { background-color: #e1e2e7 !important; }
.light-mode .bg-tn-bg2   { background-color: #d0d1db !important; }
.light-mode .bg-tn-bg3   { background-color: #c4c5cd !important; }
.light-mode header.sticky { background-color: rgba(225,226,231,0.95) !important; }
.light-mode .text-tn-fg     { color: #343b58 !important; }
.light-mode .text-tn-sub    { color: #6172b0 !important; }
.light-mode .text-tn-blue   { color: #2e7de9 !important; }
.light-mode .text-tn-purple { color: #7847bd !important; }
.light-mode .text-tn-cyan   { color: #007197 !important; }
.light-mode .text-tn-green  { color: #587539 !important; }
.light-mode .text-tn-yellow { color: #8c6c3e !important; }
.light-mode .text-tn-red    { color: #f52a65 !important; }
.light-mode .text-tn-orange { color: #b15c00 !important; }
.light-mode .border-tn-border       { border-color: #9699b6 !important; }
.light-mode .border-tn-blue\/50     { border-color: rgba(46,125,233,0.5) !important; }
.light-mode .border-tn-blue\/20     { border-color: rgba(46,125,233,0.2) !important; }
.light-mode .border-tn-yellow\/30   { border-color: rgba(140,108,62,0.3) !important; }
.light-mode .border-tn-purple\/50   { border-color: rgba(120,71,189,0.5) !important; }
.light-mode .border-tn-cyan\/50     { border-color: rgba(0,113,151,0.5) !important; }
.light-mode .border-tn-green\/50    { border-color: rgba(88,117,57,0.5) !important; }
.light-mode .border-tn-yellow\/50   { border-color: rgba(140,108,62,0.5) !important; }
.light-mode .border-tn-orange\/50   { border-color: rgba(177,92,0,0.5) !important; }
.light-mode .hover\:border-tn-blue\/50:hover   { border-color: rgba(46,125,233,0.5) !important; }
.light-mode .hover\:border-tn-purple\/50:hover { border-color: rgba(120,71,189,0.5) !important; }
.light-mode .hover\:border-tn-cyan\/50:hover   { border-color: rgba(0,113,151,0.5) !important; }
.light-mode .hover\:border-tn-green\/50:hover  { border-color: rgba(88,117,57,0.5) !important; }
.light-mode .hover\:border-tn-yellow\/50:hover { border-color: rgba(140,108,62,0.5) !important; }
.light-mode .hover\:border-tn-orange\/50:hover { border-color: rgba(177,92,0,0.5) !important; }
.light-mode #nav-backdrop { background-color: rgba(52,59,88,0.5) !important; }

/* ── Base ───────────────────────────────────────────────────────────────────── */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; transition: var(--tn-theme-transition); }
section[id] { scroll-margin-top: 1.5rem; }
@media (max-width: 1023px) { section[id] { scroll-margin-top: 4.5rem; } }
#desktop-sidebar, header, nav, main, aside, footer, section {
  transition: var(--tn-theme-transition);
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--tn-bg); }
::-webkit-scrollbar-thumb { background: var(--tn-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--tn-sub); }

pre { font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 0.82rem; line-height: 1.7; }
table { border-collapse: collapse; width: 100%; }
th { color: var(--tn-blue); font-weight: 600; text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--tn-border); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }
td { padding: 10px 14px; border-bottom: 1px solid var(--tn-bg3); font-size: 0.875rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.04); }
kbd { background: var(--tn-bg2); border: 1px solid var(--tn-border); border-radius: 4px; padding: 1px 6px; font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--tn-fg); }

/* ── Typography ─────────────────────────────────────────────────────────────── */
.section-title { font-size: 1.5rem; font-weight: 700; color: var(--tn-fg); margin-bottom: 0.75rem; }
.inline-code { background: var(--tn-bg2); border: 1px solid var(--tn-border); border-radius: 4px; padding: 1px 6px; font-family: 'JetBrains Mono', monospace; font-size: 0.8em; color: var(--tn-cyan); }
.hero-gradient { background: var(--tn-hero-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ── Section fade animation ─────────────────────────────────────────────────── */
.section-fade { opacity: 0; transform: translateY(16px); transition: opacity 0.4s ease, transform 0.4s ease; }
.section-fade.visible { opacity: 1; transform: translateY(0); }

/* ── Tool cards ─────────────────────────────────────────────────────────────── */
.tool-card:hover { box-shadow: 0 0 0 1px var(--tn-blue), 0 4px 24px rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.08); }

/* ── Code blocks ────────────────────────────────────────────────────────────── */
.code-block-wrap { background: var(--tn-bg2); border: 1px solid var(--tn-border); border-radius: 10px; overflow: hidden; }
.code-header { display: flex; align-items: center; justify-content: space-between; padding: 6px 12px; border-bottom: 1px solid var(--tn-bg3); background: var(--tn-bg-code); gap: 8px; }
.code-body { padding: 14px 16px; overflow-x: auto; color: var(--tn-fg); -webkit-overflow-scrolling: touch; }

/* ── Copy button ────────────────────────────────────────────────────────────── */
.copy-btn { font-size: 0.7rem; color: var(--tn-sub); border: 1px solid var(--tn-border); border-radius: 4px; padding: 3px 10px; cursor: pointer; background: transparent; transition: all 0.15s; white-space: nowrap; flex-shrink: 0; min-height: 28px; }
.copy-btn:hover { color: var(--tn-blue); border-color: var(--tn-blue); background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.08); }
.copy-btn.copied { color: var(--tn-green) !important; border-color: var(--tn-green) !important; }

/* ── Color swatch ───────────────────────────────────────────────────────────── */
.color-swatch { display: inline-block; width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--tn-border); vertical-align: middle; margin-right: 6px; }

/* ── Tab buttons ────────────────────────────────────────────────────────────── */
.tab-btn { font-size: 0.78rem; padding: 6px 14px; border-radius: 6px; border: 1px solid var(--tn-border); background: transparent; color: var(--tn-sub); cursor: pointer; transition: all 0.15s; white-space: nowrap; min-height: 34px; }
.tab-btn:hover { color: var(--tn-fg); border-color: var(--tn-sub); }
.active-tab { background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.12) !important; color: var(--tn-blue) !important; border-color: var(--tn-blue) !important; }
[id$="-tabs"] { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
[id$="-tabs"]::-webkit-scrollbar { display: none; }

/* ── Lucide icons ───────────────────────────────────────────────────────────── */
[data-lucide] { display: inline-block; vertical-align: middle; }

/* ── Desktop sidebar ────────────────────────────────────────────────────────── */
#desktop-sidebar {
  width: 15rem;
  background: linear-gradient(170deg, var(--tn-bg2) 0%, var(--tn-bg) 100%);
  box-shadow: 1px 0 0 var(--tn-border), 6px 0 32px rgba(0,0,0,0.12);
  transition: width 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}
#desktop-sidebar.collapsed { width: 3.75rem; }

.sb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 10px 14px;
  border-bottom: 1px solid var(--tn-border);
  gap: 8px;
  min-height: 68px;
  flex-shrink: 0;
}
#desktop-sidebar.collapsed .sb-header { justify-content: center; }

.sb-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  opacity: 1;
  max-width: 200px;
  transition: opacity 0.18s ease, max-width 0.32s cubic-bezier(0.4,0,0.2,1);
}
#desktop-sidebar.collapsed .sb-brand { opacity: 0; max-width: 0; pointer-events: none; }
.sb-brand-name { font-size: 0.875rem; font-weight: 700; color: var(--tn-blue); white-space: nowrap; line-height: 1.3; }
.sb-brand-sub  { font-size: 0.68rem; color: var(--tn-sub); white-space: nowrap; margin-top: 1px; }

.sb-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--tn-sub);
  cursor: pointer;
  flex-shrink: 0;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.sb-toggle-btn:hover {
  color: var(--tn-blue);
  background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.1);
  border-color: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.25);
}
.sb-chevron { transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1); }
#desktop-sidebar.collapsed .sb-chevron { transform: rotate(180deg); }

/* ── Nav area ───────────────────────────────────────────────────────────────── */
.sb-nav {
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
}
.sb-nav::-webkit-scrollbar { display: none; }

/* ── Nav links ──────────────────────────────────────────────────────────────── */
.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--tn-sub);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
}
.nav-link:hover { color: var(--tn-fg); background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.07); }
.nav-link.active {
  color: var(--tn-blue);
  background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.12);
  font-weight: 600;
}
.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 2.5px;
  border-radius: 0 2px 2px 0;
  background: var(--tn-blue);
  box-shadow: 0 0 6px rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.6);
}
#desktop-sidebar.collapsed .nav-link { justify-content: center; padding: 8px; gap: 0; }
#desktop-sidebar.collapsed .nav-link .nav-label { display: none; }
#desktop-sidebar.collapsed .nav-link.active::before { display: none; }
.nav-icon { width: 15px; height: 15px; flex-shrink: 0; }
.nav-label { overflow: hidden; white-space: nowrap; }

/* ── Nav group labels ───────────────────────────────────────────────────────── */
.nav-group-label {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--tn-sub);
  padding: 14px 10px 4px;
  opacity: 0.6;
  white-space: nowrap;
  overflow: hidden;
  max-height: 40px;
  transition: opacity 0.18s, max-height 0.32s cubic-bezier(0.4,0,0.2,1), padding 0.32s;
}
#desktop-sidebar.collapsed .nav-group-label { opacity: 0; max-height: 0; padding-top: 0; padding-bottom: 0; }
.drawer-group-label {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--tn-sub);
  padding: 16px 12px 4px;
  opacity: 0.6;
}

/* ── Sidebar footer ─────────────────────────────────────────────────────────── */
.sb-footer {
  padding: 8px 8px 16px;
  border-top: 1px solid var(--tn-border);
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}
.sb-footer-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--tn-sub);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  text-decoration: none;
  background: transparent;
  border: none;
  white-space: nowrap;
  overflow: hidden;
  width: 100%;
  text-align: left;
}
.sb-footer-btn:hover { color: var(--tn-fg); background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.07); }
.sb-label {
  overflow: hidden;
  white-space: nowrap;
  opacity: 1;
  max-width: 180px;
  transition: opacity 0.18s ease, max-width 0.32s cubic-bezier(0.4,0,0.2,1);
}
#desktop-sidebar.collapsed .sb-footer { align-items: center; }
#desktop-sidebar.collapsed .sb-footer-btn { justify-content: center; padding: 8px; gap: 0; }
#desktop-sidebar.collapsed .sb-label { opacity: 0; max-width: 0; }

/* ── Mobile drawer links ────────────────────────────────────────────────────── */
.drawer-link { display: flex; align-items: center; padding: 11px 12px; border-radius: 8px; font-size: 0.9rem; color: var(--tn-sub); text-decoration: none; transition: all 0.15s; border-left: 2px solid transparent; }
.drawer-link:hover { color: var(--tn-fg); background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.06); }
.drawer-link.active { color: var(--tn-blue); background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.1); border-left-color: var(--tn-blue); }

/* ── Tables (wrap) ──────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 0.75rem; border: 1px solid var(--tn-border); }
.table-wrap table { border-collapse: collapse; width: 100%; min-width: 360px; }

/* ── Reading progress bar ───────────────────────────────────────────────────── */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--tn-hero-gradient);
  z-index: 100;
  transition: width 0.1s linear;
}

/* ── Back-to-top button ─────────────────────────────────────────────────────── */
#back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 50;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--tn-bg2);
  border: 1px solid var(--tn-border);
  color: var(--tn-sub);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.15s, border-color 0.15s;
  pointer-events: none;
}
#back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
#back-to-top:hover { color: var(--tn-blue); border-color: var(--tn-blue); }

/* ── Profile comparison cards ───────────────────────────────────────────────── */
.profile-card {
  background: var(--tn-bg2);
  border: 1px solid var(--tn-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.profile-card:first-child:hover { border-color: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.5); }
.profile-card:last-child:hover { border-color: rgba(187,154,247,0.5); }
.profile-card-header { padding: 14px 16px; border-bottom: 1px solid var(--tn-bg3); display: flex; align-items: center; gap: 10px; }
.profile-card-body { padding: 16px; }
.profile-stat { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--tn-bg3); font-size: 0.82rem; }
.profile-stat:last-child { border-bottom: none; }
.profile-stat-key { color: var(--tn-sub); font-family: 'JetBrains Mono', monospace; }
.profile-stat-val { color: var(--tn-fg); font-family: 'JetBrains Mono', monospace; font-weight: 600; }

/* ── Switch method cards ────────────────────────────────────────────────────── */
.switch-card {
  background: var(--tn-bg2);
  border: 1px solid var(--tn-border);
  border-radius: 12px;
  padding: 18px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.switch-card:hover {
  box-shadow: 0 4px 20px rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.07);
}

/* ── Gallery grid ───────────────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (min-width: 640px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .gallery-grid { grid-template-columns: repeat(4, 1fr); }
}

.gallery-thumb {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--tn-border);
  cursor: pointer;
  position: relative;
  aspect-ratio: 16 / 10;
  transition: border-color 0.2s, transform 0.2s;
}
.gallery-thumb:hover { border-color: var(--tn-blue); transform: translateY(-2px); }
.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.gallery-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,27,38,0.85) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 10px 12px;
  opacity: 0;
  transition: opacity 0.2s;
}
.gallery-thumb:hover .gallery-thumb-overlay { opacity: 1; }
@media (hover: none) { .gallery-thumb-overlay { opacity: 1; } }
.gallery-thumb-label { font-size: 0.75rem; font-weight: 600; color: #fff; line-height: 1.2; }
.gallery-thumb-sub { font-size: 0.65rem; color: rgba(255,255,255,0.65); margin-top: 2px; }

/* CSS-generated screenshot / wallpaper previews (no image needed) */
.preview-sketchybar   { background: linear-gradient(180deg, #1a1b26 0%, #24283b 100%); position: relative; }
.preview-terminal     { background: linear-gradient(135deg, #1a1b26 0%, #1e2030 100%); }
.preview-layout       { background: linear-gradient(135deg, #1a1b26 0%, #24283b 60%, #2f3549 100%); }
.preview-starship     { background: linear-gradient(135deg, #1e2030 0%, #1a1b26 100%); }
.preview-wp-storm     { background: linear-gradient(135deg, #1a1b26 0%, #24283b 35%, #414868 70%, #565f89 100%); }
.preview-wp-aurora    { background: linear-gradient(135deg, #1a1b26 0%, #7aa2f7 40%, #bb9af7 70%, #7dcfff 100%); }
.preview-wp-forest    { background: linear-gradient(135deg, #1a1b26 0%, #1e2030 30%, #2f3549 55%, #9ece6a 100%); }
.preview-wp-sunset    { background: linear-gradient(135deg, #1a1b26 0%, #ff9e64 40%, #f7768e 70%, #bb9af7 100%); }

/* Decorative content for CSS previews */
.preview-sketchybar::before {
  content: '';
  position: absolute;
  top: 12%;
  left: 5%;
  right: 5%;
  height: 10%;
  background: rgba(122,162,247,0.15);
  border-radius: 100px;
  border: 1px solid rgba(122,162,247,0.2);
}
.preview-layout::before,
.preview-layout::after {
  content: '';
  position: absolute;
  border: 1px solid rgba(65,72,104,0.6);
  border-radius: 6px;
  background: rgba(36,40,59,0.6);
}
.preview-layout::before { inset: 15% 52% 15% 5%; }
.preview-layout::after  { inset: 15% 5% 15% 52%; }

/* ── Lightbox ───────────────────────────────────────────────────────────────── */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10,11,20,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  backdrop-filter: blur(6px);
}
#lightbox.open { opacity: 1; pointer-events: auto; }
#lightbox-content {
  position: relative;
  max-width: min(900px, 92vw);
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--tn-border);
  transform: scale(0.94);
  transition: transform 0.22s ease;
}
#lightbox.open #lightbox-content { transform: scale(1); }
#lightbox-inner {
  width: 100%;
  aspect-ratio: 16 / 10;
}
#lightbox-inner img { width: 100%; height: 100%; object-fit: cover; display: block; }
#lightbox-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 18px;
  background: linear-gradient(to top, rgba(26,27,38,0.95) 0%, transparent 100%);
  color: var(--tn-fg);
  font-size: 0.85rem;
  font-weight: 600;
}
#lightbox-caption span { display: block; font-size: 0.72rem; color: var(--tn-sub); font-weight: 400; margin-top: 2px; }
#lightbox-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(26,27,38,0.8);
  border: 1px solid var(--tn-border);
  border-radius: 6px;
  color: var(--tn-sub);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
#lightbox-close:hover { color: var(--tn-fg); border-color: var(--tn-sub); }
.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(26,27,38,0.7);
  border: 1px solid var(--tn-border);
  border-radius: 6px;
  color: var(--tn-sub);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  z-index: 2;
}
.lightbox-arrow:hover { color: var(--tn-fg); border-color: var(--tn-sub); }
#lightbox-prev { left: 12px; }
#lightbox-next { right: 12px; }

/* ── Wallpaper carousel ─────────────────────────────────────────────────────── */
.wp-carousel-wrap {
  position: relative;
  padding: 0 22px;
}
.wp-carousel {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 4px 0 14px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.wp-carousel::-webkit-scrollbar { display: none; }

.wp-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--tn-border);
  background: var(--tn-bg2);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.wp-card:hover {
  border-color: var(--tn-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.08);
}
.wp-card-preview {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.wp-card-gradient {
  width: 100%;
  height: 100%;
  display: block;
}
.wp-card-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.wp-card-footer {
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-top: 1px solid var(--tn-border);
}
.wp-title { font-size: 0.78rem; font-weight: 600; color: var(--tn-fg); line-height: 1.2; }
.wp-sub   { font-size: 0.65rem; color: var(--tn-sub); margin-top: 2px; }
.wp-dl-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  color: var(--tn-blue);
  border: 1px solid rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.4);
  border-radius: 5px;
  padding: 4px 8px;
  background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.06);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  white-space: nowrap;
  text-decoration: none;
  flex-shrink: 0;
}
.wp-dl-btn:hover {
  color: var(--tn-blue);
  border-color: var(--tn-blue);
  background: rgba(var(--tn-blue-r),var(--tn-blue-g),var(--tn-blue-b),0.08);
}

/* ── Carousel prev / next buttons ───────────────────────────────────────────── */
.carousel-btn {
  position: absolute;
  top: calc(50% - 10px);
  transform: translateY(-50%);
  z-index: 10;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--tn-bg2);
  border: 1px solid var(--tn-border);
  color: var(--tn-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, opacity 0.2s;
}
.carousel-btn:hover { color: var(--tn-blue); border-color: var(--tn-blue); }
.carousel-btn:disabled { opacity: 0.25; pointer-events: none; }
#wp-prev { left: -18px; }
#wp-next { right: -18px; }

/* ── Mobile ─────────────────────────────────────────────────────────────────── */
@media (max-width: 1023px) {
  .wp-card { flex: 0 0 240px; }
  .wp-carousel-wrap { padding: 0 16px; }
  #wp-prev { left: -10px; }
  #wp-next { right: -10px; }
  main { padding-left: 1.25rem !important; padding-right: 1.25rem !important; }
  h1.hero-gradient, h1 { font-size: 2rem !important; }
  .section-title { font-size: 1.25rem; }
  pre { font-size: 0.78rem !important; }
  .code-block-wrap { border-radius: 8px; }
  .bg-tn-bg2.border.border-tn-border.rounded-xl.overflow-hidden:has(table) {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
  }
  table { min-width: 340px; }
  .grid-cols-2, .sm\:grid-cols-4 { grid-template-columns: repeat(2, 1fr) !important; }
  kbd { font-size: 0.72rem; padding: 1px 5px; }
  .tab-btn { padding: 7px 14px; font-size: 0.8rem; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr) !important; }
  #back-to-top { bottom: 1rem; right: 1rem; }
}

@media (max-width: 480px) {
  .grid-cols-2, .sm\:grid-cols-4 { grid-template-columns: 1fr !important; }
  .sm\:grid-cols-2 { grid-template-columns: 1fr !important; }
  .flex.flex-wrap.gap-2.mb-8 { gap: 6px; }
  .badge { font-size: 0.7rem !important; }
  .gallery-grid { grid-template-columns: 1fr !important; }
  #lightbox-prev, #lightbox-next { width: 28px; height: 28px; }
  .wp-card { flex: 0 0 220px; }
  .wp-carousel-wrap { padding: 0 10px; }
}

/* ── Details / summary (collapsible) ────────────────────────────────────────── */
details > summary { list-style: none; }
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: '▸ '; font-size: 0.65rem; margin-right: 2px; }
details[open] > summary::before { content: '▾ '; }

/* ── Wallpaper counter ───────────────────────────────────────────────────────── */
#wp-counter { font-size: 0.72rem; color: var(--tn-sub); letter-spacing: 0.04em; }