/* ============================================================
   Jinpeng OS — Design Tokens
   Dark, technical, premium. Emerald terminal accent.
   ============================================================ */

:root {
  /* --- Canvas / surfaces (deep near-black, faint terminal tint) --- */
  --bg-0: #07070b;          /* deepest, wallpaper base */
  --bg-1: #0a0a11;          /* desktop */
  --bg-2: #101019;          /* window body */
  --bg-3: #16161f;          /* raised element */
  --bg-4: #1d1d28;          /* hover */

  /* Glass surfaces */
  --glass: rgba(22, 22, 32, 0.72);
  --glass-strong: rgba(16, 16, 24, 0.86);
  --glass-light: rgba(40, 40, 56, 0.40);

  /* Borders / hairlines */
  --line: rgba(255, 255, 255, 0.07);
  --line-2: rgba(255, 255, 255, 0.11);
  --line-3: rgba(255, 255, 255, 0.16);

  /* --- Text --- */
  --tx-0: #f3f3f7;          /* primary */
  --tx-1: #b6b6c4;          /* secondary */
  --tx-2: #7c7c8c;          /* tertiary */
  --tx-3: #54545f;          /* faint / disabled */

  /* --- Accent: emerald / terminal --- */
  --ac: #16b87f;
  --ac-bright: #3ee0a0;
  --ac-dim: #109968;
  --ac-deep: #0c5e44;
  --ac-glow: rgba(22, 184, 127, 0.45);
  --ac-wash: rgba(22, 184, 127, 0.12);
  --ac-line: rgba(22, 184, 127, 0.32);

  /* Supporting signal colors (low saturation, matched L/C) */
  --ok: #3ecf8e;
  --warn: #e8b14a;
  --info: #54a8ff;
  --rose: #ff6a8a;

  /* --- Radius --- */
  --r-xs: 6px;
  --r-sm: 9px;
  --r-md: 13px;
  --r-lg: 18px;
  --r-xl: 24px;
  --r-2xl: 32px;

  /* --- Shadows --- */
  --sh-win: 0 1px 0 rgba(255,255,255,0.06) inset,
            0 30px 80px -20px rgba(0,0,0,0.75),
            0 12px 40px -12px rgba(0,0,0,0.6);
  --sh-pop: 0 1px 0 rgba(255,255,255,0.07) inset,
            0 24px 60px -16px rgba(0,0,0,0.8);
  --sh-glow: 0 0 0 1px var(--ac-line), 0 8px 30px -6px var(--ac-glow);

  /* --- Type --- */
  --f-sans: "Hanken Grotesk", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --f-disp: "Space Grotesk", var(--f-sans);
  --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* --- Motion --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }

body {
  font-family: var(--f-sans);
  background: var(--bg-0);
  color: var(--tx-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
  font-feature-settings: "ss01", "cv01";
}

#root { height: 100vh; width: 100vw; }

::selection { background: var(--ac-glow); color: #fff; }

/* Scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.09);
  border-radius: 99px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); background-clip: padding-box; }

.mono { font-family: var(--f-mono); }
.disp { font-family: var(--f-disp); }

/* shared keyframes */
@keyframes jp-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes jp-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
@keyframes jp-spin { to { transform: rotate(360deg); } }
@keyframes jp-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes jp-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

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