/* Obsidian / champagne: neutral black surfaces, restrained gold accents.
   Dark adapts shared semantic roles; component geometry is shared with Light. */
:root[data-theme="dark"] {
  --desk-bg: #000000;
  --desk-rail: #080808;
  --desk-surface: #0c0c0c;
  --desk-surface-2: #141414;
  --desk-surface-3: #1d1d1d;
  --desk-line: #2b2b2b;
  --desk-line-strong: #626262;
  --desk-text: #e7e7e7;
  --desk-text-soft: #bdbdbd;
  --desk-soft: var(--desk-text-soft);
  --desk-muted: #999999;
  --desk-faint: #929292;
  --desk-signal: #d6bd86;
  --desk-signal-strong: #efdfbb;
  --desk-signal-soft: #1b1812;
  --desk-risk: #e5a0a8;
  --desk-brass: var(--desk-signal);
  --desk-brass-soft: var(--desk-signal-soft);
  --desk-blue: #a4bdd9;
  --desk-club: var(--desk-brass);
  --desk-club-soft: var(--desk-brass-soft);
  --pa-surface: var(--desk-surface);
  --pa-bg-elevated: var(--desk-surface);
  --pa-bg-panel: var(--desk-surface);
  --pa-bg-panel-solid: var(--desk-surface);
  --pa-floating-surface: rgb(8 8 8 / 88%);
  --pa-bg-soft: var(--desk-surface-2);
  --pa-bg-softer: var(--desk-bg);
  --pa-positive: #92bba5;
  --pa-positive-soft: #142019;
  --pa-negative: var(--desk-risk);
  --pa-negative-soft: #26181b;
  --pa-info: var(--desk-blue);
  --pa-info-soft: #161e28;
  --pa-action-bg: var(--desk-signal);
  --pa-action-hover: var(--desk-signal-strong);
  --pa-danger-bg: var(--pa-negative);
  --pa-on-solid: #101010;
  --pa-shadow: 0 16px 48px rgb(0 0 0 / 48%);
  --pa-scroll-thumb: #505050;
  --pa-scroll-hover: #727272;
  --pa-scroll-active: #999999;
  --pa-selection-bg: #4a3d24;
  --pa-gold-edge: #665437;
  --pa-discord-indigo: var(--desk-signal);
  --pa-discord-violet: var(--desk-signal-strong);
  --pa-discord-teal: var(--desk-signal);
  --pa-discord-ink: var(--pa-on-solid);
  /* Adapters for established module palettes; Light retains their fallback values. */
  --pa-dark-text: var(--pa-text);
  --pa-dark-text-soft: var(--pa-text-soft);
  --pa-dark-muted: var(--pa-muted);
  --pa-dark-primary: var(--pa-primary);
  --pa-dark-negative: var(--pa-negative);
  --pa-dark-gold: var(--pa-gold);
  --pa-dark-border: var(--pa-border);
  --pa-dark-surface: var(--pa-surface);
  --pa-dark-bg-soft: var(--pa-bg-soft);
  --pa-dark-positive-soft: var(--pa-positive-soft);
  --pa-dark-gold-soft: var(--pa-gold-soft);
  --pa-dark-violet: #c5b3df;
  color-scheme: dark;
}

html { background: var(--pa-bg); scrollbar-color: var(--pa-scroll-thumb) var(--pa-bg); scrollbar-width: thin; }
body.pa-light-theme, body.pa-light-theme .fa-kb-app { color-scheme: inherit; }
body.pa-light-theme, body.pa-light-theme * { scrollbar-color: var(--pa-scroll-thumb) var(--pa-bg); scrollbar-width: thin; }
body.pa-light-theme ::-webkit-scrollbar { width: 10px; height: 10px; }
body.pa-light-theme ::-webkit-scrollbar-track { background: var(--pa-bg); }
body.pa-light-theme ::-webkit-scrollbar-thumb { background: var(--pa-scroll-thumb); border: 2px solid var(--pa-bg); border-radius: 6px; }
body.pa-light-theme ::-webkit-scrollbar-thumb:hover { background: var(--pa-scroll-hover); }
body.pa-light-theme ::-webkit-scrollbar-thumb:active { background: var(--pa-scroll-active); }

body.desk-body .pa-top-actions > .pa-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  flex: 0 0 auto;
  min-width: 86px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--pa-border-strong);
  border-radius: 7px;
  background: var(--pa-surface);
  color: var(--pa-text-soft);
  font: 550 13px/1 var(--desk-ui);
  cursor: pointer;
}
body.desk-body .pa-top-actions > .pa-theme-toggle:hover { background: var(--pa-primary-soft); color: var(--pa-primary); border-color: var(--pa-primary); }
body.desk-body .pa-top-actions > .pa-theme-toggle:active { background: var(--desk-surface-3); }
.pa-theme-moon, [data-theme="dark"] .pa-theme-sun { display: none; }
[data-theme="dark"] .pa-theme-moon { display: block; }
body.pa-light-theme .pa-top-actions > .pa-theme-toggle[hidden] { display: none !important; }

/* Secondary text stays readable in both palettes. */
body.pa-light-theme .text-slate-600, body.pa-light-theme .text-slate-700,
body.pa-light-theme .text-gray-600, body.pa-light-theme .text-gray-700,
body.pa-light-theme .text-gray-800 { color: var(--pa-text-soft) !important; }
body.pa-light-theme .text-slate-300, body.pa-light-theme .text-gray-400 { color: var(--pa-muted) !important; }

/* Legacy utilities and isolated component palettes use semantic dark roles. */
[data-theme="dark"] body.pa-light-theme ::selection { background: var(--pa-selection-bg); color: var(--pa-text); }
/* Supersede the legacy vendor control focus tint in Dark. */
[data-theme="dark"] body.pa-light-theme :focus-visible { outline-color: var(--pa-primary) !important; }
[data-theme="dark"] body.pa-light-theme .text-indigo-800,
[data-theme="dark"] body.pa-light-theme .text-indigo-900 { color: var(--pa-primary) !important; }
[data-theme="dark"] body.pa-light-theme :is(.text-blue-600, .text-blue-700, .text-blue-800, .text-sky-800) { color: var(--pa-info) !important; }
[data-theme="dark"] body.pa-light-theme :is(.text-rose-800, .text-red-700, .text-red-800) { color: var(--pa-negative) !important; }
[data-theme="dark"] body.pa-light-theme :is(.text-emerald-800, .text-green-600, .text-green-700, .text-green-800) { color: var(--pa-positive) !important; }
[data-theme="dark"] body.pa-light-theme :is(.text-amber-800, .text-amber-900, .text-yellow-800) { color: var(--pa-gold) !important; }
[data-theme="dark"] body.pa-light-theme :is(.bg-blue-50, .bg-blue-100, .bg-sky-100) { background: var(--pa-info-soft) !important; }
[data-theme="dark"] body.pa-light-theme :is(.bg-green-50, .bg-green-100) { background: var(--pa-positive-soft) !important; }
[data-theme="dark"] body.pa-light-theme :is(.hover\:bg-gray-50:hover, .hover\:bg-gray-100:hover, .hover\:bg-white:hover) { background: var(--pa-bg-soft) !important; }
[data-theme="dark"] body.pa-light-theme :is(.bg-rose-400, .bg-rose-500, .bg-emerald-400, .bg-emerald-500) { color: var(--pa-on-solid) !important; }
[data-theme="dark"] body.pa-light-theme .bg-rose-500.text-white,
[data-theme="dark"] body.pa-light-theme .bg-emerald-500.text-white { color: var(--pa-on-solid) !important; }
[data-theme="dark"] body.pa-light-theme .pa-side-rail { background: var(--desk-rail); }
[data-theme="dark"] body.pa-light-theme pre { background: var(--pa-bg-soft) !important; }
[data-theme="dark"] body.pa-light-theme .desk-video-screen,
[data-theme="dark"] body.pa-light-theme .desk-video-placeholder { background: var(--pa-bg); }
[data-theme="dark"] body.pa-light-theme .desk-plan-card.is-ultra { background: var(--pa-surface); }
[data-theme="dark"] body.pa-light-theme .desk-modal-backdrop { background: rgb(0 0 0 / 65%); }
[data-theme="dark"] body.pa-light-theme .home-follow-icon.is-xiaohongshu { background: var(--pa-negative-soft); color: var(--pa-negative); }
[data-theme="dark"] body.pa-light-theme .home-follow-icon.is-bilibili { background: var(--pa-info-soft); color: var(--pa-info); }
[data-theme="dark"] body.pa-light-theme .pc-performance { --pc-flat: #c5b3df; }
[data-theme="dark"] body.pa-light-theme :is(.pc-chip--flat, .pc-calendar-day--flat) { background: #393247; }

/* Dark shell: the page stays untextured black. Translucency is confined to chrome. */
[data-theme="dark"] body.pa-light-theme > nav {
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
[data-theme="dark"] body.pa-light-theme .pa-side-prime-slot { border-color: var(--pa-gold-edge); }
[data-theme="dark"] body.pa-light-theme .fa-kb-app { --fa-bg: var(--pa-bg); --fa-canvas: var(--pa-bg); }
[data-theme="dark"] body.pa-light-theme .home-follow-card {
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 4%);
}
[data-theme="dark"] body.pa-light-theme .home-hero h1 span {
  color: var(--pa-primary);
  background: linear-gradient(110deg, var(--pa-primary), var(--desk-signal-strong) 52%, var(--pa-primary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="dark"] body.pa-light-theme .home-action-discord {
  border-color: var(--pa-primary);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 18%);
  animation: none;
}
[data-theme="dark"] body.pa-light-theme .home-action-discord::before { display: none; }
[data-theme="dark"] body.pa-light-theme .home-story .home-action-discord:focus-visible { outline-color: var(--pa-primary) !important; }
/* Override vendor white checkmarks so filled gold controls retain clear contrast. */
[data-theme="dark"] body.pa-light-theme input[type="checkbox"]:checked {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3.1 8.2 6.35 11.3 12.9 4.8' fill='none' stroke='%23101010' stroke-width='2.25' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") !important;
}
[data-theme="dark"] body.pa-light-theme input[type="radio"]:checked {
  background-image: radial-gradient(circle, var(--pa-on-solid) 0 28%, transparent 32%) !important;
}

/* Native and authored date controls share the same palette. */
[data-theme="dark"] .flatpickr-calendar { background: var(--pa-surface); color: var(--pa-text); border: 1px solid var(--pa-border-strong); box-shadow: var(--pa-shadow); }
[data-theme="dark"] :is(.flatpickr-month, .flatpickr-current-month .flatpickr-monthDropdown-months, .flatpickr-weekday, .flatpickr-day, .flatpickr-time input, .flatpickr-time .flatpickr-am-pm, .flatpickr-time-separator) { color: var(--pa-text) !important; background: transparent; }
[data-theme="dark"] .flatpickr-day:is(.prevMonthDay, .nextMonthDay, .flatpickr-disabled) { color: var(--pa-muted) !important; }
[data-theme="dark"] .flatpickr-day:hover { background: var(--pa-bg-soft); border-color: var(--pa-border); }
[data-theme="dark"] .flatpickr-day:is(.selected, .startRange, .endRange) { background: var(--pa-action-bg); border-color: var(--pa-primary); color: var(--pa-on-solid) !important; }
[data-theme="dark"] :is(.flatpickr-prev-month, .flatpickr-next-month) svg { fill: var(--pa-text); }

@media (max-width: 560px) {
  body.desk-body .pa-top-actions > .pa-theme-toggle { min-width: 44px; height: 44px; padding: 0 10px; }
  .pa-theme-toggle [data-theme-label] { display: none; }
}
@media (forced-colors: active) {
  html, body.pa-light-theme * { scrollbar-color: auto; }
  body.desk-body .pa-top-actions > .pa-theme-toggle { border: 1px solid ButtonText; color: ButtonText; background: ButtonFace; }
  [data-theme="dark"] body.pa-light-theme .home-hero h1 span { background: none; -webkit-text-fill-color: currentColor; color: CanvasText; }
  [data-theme="dark"] body.pa-light-theme .home-action-discord { background: ButtonFace; color: ButtonText !important; border-color: ButtonText; box-shadow: none; }
}