:root {
  --background: 225 30% 8%;
  --foreground: 210 40% 96%;
  --primary: 165 92% 57%;
  --secondary: 255 45% 20%;
  --muted: 227 20% 16%;
  --muted-foreground: 215 16% 68%;
  --destructive: 0 76% 60%;
  --border: 225 20% 20%;
  --card: 226 28% 11%;
  --shadow-sm: 0 10px 24px rgba(0, 0, 0, 0.16);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.26);
  --shadow-lg: 0 0 0 1px rgba(88,255,211,0.15), 0 24px 60px rgba(16, 185, 129, 0.22);
  --transition-fast: 120ms ease;
  --transition-smooth: 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
}

.dark {
  --background: 225 30% 8%;
  --foreground: 210 40% 96%;
  --primary: 165 92% 57%;
  --secondary: 255 45% 20%;
  --muted: 227 20% 16%;
  --muted-foreground: 215 16% 68%;
  --destructive: 0 76% 60%;
  --border: 225 20% 20%;
  --card: 226 28% 11%;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(22, 163, 74, 0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 28%),
    hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

button,
a,
input {
  transition: all var(--transition-smooth);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-thumb {
  background: hsl(var(--muted));
  border-radius: 999px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.18); }
  50% { box-shadow: 0 0 0 10px rgba(45, 212, 191, 0); }
}

.shadow-glow {
  animation: pulseGlow 2.8s infinite;
}