:root {
  --background: 228 35% 97%;
  --foreground: 229 28% 16%;
  --primary: 258 88% 63%;
  --secondary: 190 86% 45%;
  --muted: 226 24% 90%;
  --destructive: 3 78% 58%;
  --border: 228 22% 86%;
  --card: 0 0% 100%;

  --shadow-sm: 0 8px 24px hsla(229, 40%, 14%, 0.08);
  --shadow-md: 0 16px 42px hsla(229, 45%, 18%, 0.12);
  --shadow-lg: 0 22px 64px hsla(258, 88%, 40%, 0.22);

  --transition-fast: 140ms ease;
  --transition-smooth: 280ms cubic-bezier(0.22, 1, 0.36, 1);

  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
}

.dark {
  --background: 229 26% 10%;
  --foreground: 220 20% 94%;
  --primary: 265 90% 69%;
  --secondary: 190 86% 58%;
  --muted: 227 16% 20%;
  --destructive: 4 82% 64%;
  --border: 226 15% 24%;
  --card: 228 22% 13%;

  --shadow-sm: 0 10px 28px hsla(228, 70%, 2%, 0.34);
  --shadow-md: 0 18px 46px hsla(228, 70%, 2%, 0.42);
  --shadow-lg: 0 26px 72px hsla(265, 90%, 55%, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.08), transparent 30%),
    radial-gradient(circle at top right, hsl(var(--secondary) / 0.08), transparent 26%),
    hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  transition: background var(--transition-smooth), color var(--transition-smooth);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.glass-panel {
  background: linear-gradient(180deg, hsl(var(--card) / 0.9), hsl(var(--card) / 0.82));
  border: 1px solid hsl(var(--border));
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
}

::selection {
  background: hsl(var(--primary) / 0.24);
}