:root {
  /* ── Colors (HSL) ── */
  --background: 222 47% 8%;
  --foreground: 210 40% 98%;
  --primary: 266 92% 62%;
  --primary-foreground: 210 40% 98%;
  --secondary: 222 35% 14%;
  --secondary-foreground: 210 40% 98%;
  --accent: 190 95% 45%;
  --accent-foreground: 222 47% 11%;
  --muted: 222 28% 16%;
  --muted-foreground: 215 20% 72%;
  --destructive: 0 84% 60%;
  --border: 222 22% 22%;
  --ring: 266 92% 62%;
  --card: 222 35% 12%;
  --card-foreground: 210 40% 98%;

  /* ── Shadows ── */
  --shadow-sm: 0 1px 2px 0 hsl(var(--foreground) / 0.06);
  --shadow-md: 0 10px 18px -12px hsl(var(--foreground) / 0.18), 0 2px 6px -4px hsl(var(--foreground) / 0.10);
  --shadow-lg: 0 18px 40px -22px hsl(var(--foreground) / 0.22), 0 10px 18px -16px hsl(var(--foreground) / 0.12);
  --shadow-elegant: 0 18px 60px -28px hsl(var(--primary) / 0.55);

  /* ── 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 20% 10%, hsl(var(--primary) / 0.35), transparent 55%), radial-gradient(900px 500px at 80% 20%, hsl(var(--accent) / 0.25), transparent 60%), linear-gradient(180deg, hsl(var(--background)), hsl(var(--background)));

  /* ── 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);

  /* ── Border Radius ── */
  --radius-sm: 0.375rem;
  --radius-md: 0.6rem;
  --radius-lg: 0.9rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* ── Typography ── */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans Arabic", "Noto Sans", Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

.dark, [data-theme="dark"] {
  --background: 222 47% 8%;
  --foreground: 210 40% 98%;
}

[data-theme="light"] {
  --background: 210 40% 98%;
  --foreground: 222 47% 11%;
  --secondary: 210 40% 96%;
  --secondary-foreground: 222 47% 11%;
  --accent: 190 95% 40%;
  --accent-foreground: 210 40% 98%;
  --muted: 210 40% 96%;
  --muted-foreground: 215 16% 47%;
  --border: 214 32% 91%;
  --card: 0 0% 100%;
  --card-foreground: 222 47% 11%;
  --shadow-sm: 0 1px 2px 0 hsl(var(--foreground) / 0.06);
  --shadow-md: 0 10px 18px -12px hsl(var(--foreground) / 0.16), 0 2px 6px -4px hsl(var(--foreground) / 0.10);
  --shadow-lg: 0 18px 40px -22px hsl(var(--foreground) / 0.18), 0 10px 18px -16px hsl(var(--foreground) / 0.10);
  --shadow-elegant: 0 18px 60px -28px hsl(var(--primary) / 0.35);
  --gradient-subtle: linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary)));
  --gradient-hero: radial-gradient(1200px 600px at 20% 10%, hsl(var(--primary) / 0.18), transparent 55%), radial-gradient(900px 500px at 80% 20%, hsl(var(--accent) / 0.14), transparent 60%), linear-gradient(180deg, hsl(var(--background)), hsl(var(--background)));
}

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

/* Focus styles */
:focus-visible {
  outline: none;
}

/* Subtle scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: hsl(var(--border)) transparent;
}
*::-webkit-scrollbar {
  height: 10px;
  width: 10px;
}
*::-webkit-scrollbar-thumb {
  background: hsl(var(--border));
  border-radius: var(--radius-full);
}

/* Utility: glass card */
.lp-glass {
  background: linear-gradient(180deg, hsl(var(--card) / 0.72), hsl(var(--card) / 0.55));
  border: 1px solid hsl(var(--border) / 0.9);
  box-shadow: var(--shadow-elegant);
  backdrop-filter: blur(10px);
}

/* Utility: animated gradient border */
.lp-gradient-border {
  position: relative;
}
.lp-gradient-border::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--gradient-primary);
  opacity: 0.55;
  z-index: -1;
  filter: blur(10px);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}