:root {
  --background: 222 42% 97%;
  --foreground: 228 28% 14%;
  --primary: 39 96% 55%;
  --secondary: 220 33% 92%;
  --muted: 220 24% 88%;
  --destructive: 0 78% 58%;
  --border: 222 24% 83%;
  --card: 0 0% 100%;
  --accent: 193 95% 62%;
  --success: 152 64% 38%;
  --warning: 32 92% 52%;
  --shadow-sm: 0 8px 24px hsla(226, 40%, 16%, 0.06);
  --shadow-md: 0 20px 45px hsla(226, 40%, 16%, 0.12);
  --shadow-lg: 0 28px 70px hsla(226, 40%, 16%, 0.18);
  --transition-fast: 180ms ease;
  --transition-smooth: 360ms cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
}

.dark {
  --background: 226 32% 9%;
  --foreground: 210 25% 96%;
  --primary: 41 98% 60%;
  --secondary: 225 24% 16%;
  --muted: 225 19% 22%;
  --destructive: 0 82% 63%;
  --border: 224 18% 23%;
  --card: 226 28% 12%;
  --accent: 192 94% 63%;
  --success: 152 72% 45%;
  --warning: 37 96% 58%;
  --shadow-sm: 0 10px 24px hsla(0, 0%, 0%, 0.22);
  --shadow-md: 0 20px 48px hsla(0, 0%, 0%, 0.3);
  --shadow-lg: 0 34px 80px hsla(0, 0%, 0%, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
}

::selection {
  background: hsl(var(--primary) / 0.22);
  color: hsl(var(--foreground));
}

a,
button {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), opacity var(--transition-fast);
}

button {
  font: inherit;
}

#root {
  min-height: 100vh;
}

.grid-glow {
  background-image:
    linear-gradient(hsl(var(--border) / 0.14) 1px, transparent 1px),
    linear-gradient(90deg, hsl(var(--border) / 0.14) 1px, transparent 1px);
  background-size: 24px 24px;
}