/* OmniAI Hub Design System */
:root {
  /* ── Colors (HSL) ── */
  --background: 222 47% 99%;
  --foreground: 222 47% 11%;

  --primary: 258 90% 60%;
  --primary-foreground: 210 40% 98%;

  --secondary: 220 25% 96%;
  --secondary-foreground: 222 47% 11%;

  --accent: 190 85% 45%;
  --accent-foreground: 210 40% 98%;

  --muted: 220 25% 96%;
  --muted-foreground: 215 16% 47%;

  --destructive: 0 84% 60%;
  --border: 220 18% 90%;
  --ring: 258 90% 60%;

  --card: 0 0% 100%;
  --card-foreground: 222 47% 11%;

  /* ── Shadows ── */
  --shadow-sm: 0 1px 2px 0 hsl(var(--foreground) / 0.05);
  --shadow-md: 0 6px 14px -8px hsl(var(--foreground) / 0.18), 0 2px 6px -3px hsl(var(--foreground) / 0.08);
  --shadow-lg: 0 18px 40px -18px hsl(var(--foreground) / 0.25), 0 10px 18px -14px hsl(var(--foreground) / 0.12);
  --shadow-elegant: 0 18px 50px -22px hsl(var(--primary) / 0.45);

  /* ── Gradients ── */
  --gradient-primary: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--accent)));
  --gradient-subtle: linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary)));
  --gradient-hero: radial-gradient(1200px 600px at 10% 0%, hsl(var(--primary) / 0.18), transparent 60%), radial-gradient(900px 500px at 90% 10%, hsl(var(--accent) / 0.16), transparent 55%), linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary)));

  /* ── Transitions ── */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ── Radius ── */
  --radius-sm: 0.375rem;
  --radius-md: 0.6rem;
  --radius-lg: 0.9rem;
  --radius-xl: 1.2rem;
  --radius-full: 9999px;

  /* ── Typography ── */
  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.dark, [data-theme="dark"] {
  --background: 222 47% 9%;
  --foreground: 210 40% 98%;

  --primary: 258 90% 66%;
  --primary-foreground: 222 47% 11%;

  --secondary: 222 35% 14%;
  --secondary-foreground: 210 40% 98%;

  --accent: 190 85% 52%;
  --accent-foreground: 222 47% 11%;

  --muted: 222 35% 14%;
  --muted-foreground: 215 20% 70%;

  --destructive: 0 84% 62%;
  --border: 222 28% 20%;
  --ring: 258 90% 66%;

  --card: 222 40% 12%;
  --card-foreground: 210 40% 98%;

  --shadow-sm: 0 1px 2px 0 hsl(0 0% 0% / 0.25);
  --shadow-md: 0 10px 24px -18px hsl(0 0% 0% / 0.55), 0 2px 10px -6px hsl(0 0% 0% / 0.35);
  --shadow-lg: 0 22px 60px -30px hsl(0 0% 0% / 0.7), 0 10px 22px -18px hsl(0 0% 0% / 0.5);
  --shadow-elegant: 0 22px 70px -34px hsl(var(--primary) / 0.55);

  --gradient-subtle: linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary)));
  --gradient-hero: radial-gradient(1200px 600px at 10% 0%, hsl(var(--primary) / 0.22), transparent 60%), radial-gradient(900px 500px at 90% 10%, hsl(var(--accent) / 0.18), transparent 55%), linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary)));
}

html, body {
  font-family: var(--font-sans);
}

/* Focus ring consistency */
:where(a, button, input, textarea, select) {
  outline: none;
}

:where(a, button, input, textarea, select):focus-visible {
  box-shadow: 0 0 0 3px hsl(var(--ring) / 0.35);
  border-radius: var(--radius-sm);
}

/* Subtle background grid */
.omni-bg {
  background-image: radial-gradient(hsl(var(--foreground) / 0.06) 1px, transparent 1px);
  background-size: 18px 18px;
}

/* Scrollbar (best-effort) */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-thumb {
  background: hsl(var(--foreground) / 0.18);
  border-radius: var(--radius-full);
}
*::-webkit-scrollbar-track {
  background: transparent;
}