/* ============================================================
   XiaOS — theme.css
   Design tokens. Same palette as the original xia-qi.is-a.dev
   site (circuit-board dark theme) so the OS layer feels like a
   native extension of the brand, not a re-skin.
   ============================================================ */

:root{
  --bg: #0a0d10;
  --panel: #11171d;
  --panel-hi: #161d24;
  --panel-hi-2: #1a222a;
  --border: #1f2830;
  --border-soft: #182029;

  --copper: #ff9d5c;
  --copper-dim: #8a5636;
  --copper-glow: rgba(255,157,92,0.35);
  --cyan: #6ee7d8;
  --cyan-dim: #3d7a72;
  --cyan-glow: rgba(110,231,216,0.32);
  --accent: var(--copper);

  --ink: #eef3f5;
  --ink-dim: #7c8a95;
  --ink-faint: #4b5860;

  --err: #ff6b6b;
  --ok: #6ee7d8;

  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;

  --taskbar-h: 46px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;

  --shadow-window: 0 24px 70px -12px rgba(0,0,0,0.65), 0 6px 18px rgba(0,0,0,0.45);
  --shadow-pop: 0 12px 32px -6px rgba(0,0,0,0.55), 0 2px 8px rgba(0,0,0,0.4);

  --z-desktop: 1;
  --z-window: 100;
  --z-taskbar: 5000;
  --z-startmenu: 5100;
  --z-tray: 5100;
  --z-context: 5200;
  --z-notif: 5300;
  --z-boot: 9000;
  --z-cursor-fx: 9500;
}

*, *::before, *::after{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}
input, textarea{ user-select: text; }
::selection{ background: var(--copper); color: #1a0f06; }

a{ color: inherit; }
button{ font-family: inherit; }

::-webkit-scrollbar{ width: 10px; height: 10px; }
::-webkit-scrollbar-track{ background: transparent; }
::-webkit-scrollbar-thumb{ background: var(--border); border-radius: 8px; border: 2px solid var(--panel); }
::-webkit-scrollbar-thumb:hover{ background: var(--ink-faint); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}
body.reduce-motion *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }

.mono{ font-family: var(--mono); }
.hidden{ display: none !important; }
.sr-only{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; }

/* shared small components reused across apps */
.chip{ display:inline-block; padding: 5px 11px; border:1px solid var(--border); border-radius: 999px; font-family: var(--mono); font-size: 11.5px; color: var(--ink-dim); background: var(--panel-hi); margin: 0 6px 6px 0; }
.chip.learning{ color: var(--copper); border-color: var(--copper-dim); }
.btn{ display:inline-flex; align-items:center; gap:6px; font-family: var(--mono); font-size: 12.5px; padding: 8px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--panel-hi); color: var(--ink); cursor: pointer; text-decoration:none; transition: border-color .15s, color .15s, background .15s; }
.btn:hover{ border-color: var(--cyan-dim); color: var(--cyan); }
.btn-primary{ background: linear-gradient(180deg, rgba(255,157,92,0.16), rgba(255,157,92,0.05)); border-color: var(--copper-dim); color: var(--copper); }
.btn-primary:hover{ border-color: var(--copper); box-shadow: 0 0 0 1px var(--copper-dim); }
.progress-bar{ height: 6px; border-radius: 4px; background: var(--panel-hi-2); overflow:hidden; margin-top: 8px; }
.progress-fill{ height: 100%; background: var(--cyan); border-radius: 4px; }
.progress-fill.copper{ background: var(--copper); }
.progress-label{ display:flex; justify-content:space-between; font-family: var(--mono); font-size: 11px; color: var(--ink-faint); margin-top: 4px; }
.status-badge{ font-family: var(--mono); font-size: 10px; padding: 2px 7px; border-radius: 999px; border: 1px solid var(--border); color: var(--ink-dim); text-transform: uppercase; letter-spacing: .04em; }
.status-badge.finished{ color: var(--cyan); border-color: var(--cyan-dim); }
.status-badge.in-progress{ color: var(--copper); border-color: var(--copper-dim); }
.status-badge.todo{ color: var(--ink-faint); }