:root {
  --background: 164 43% 97%;
  --foreground: 220 39% 11%;
  --primary: 171 88% 31%;
  --primary-foreground: 0 0% 100%;
  --secondary: 257 84% 61%;
  --secondary-foreground: 0 0% 100%;
  --muted: 168 25% 91%;
  --muted-foreground: 219 14% 42%;
  --destructive: 0 79% 58%;
  --destructive-foreground: 0 0% 100%;
  --border: 170 24% 84%;
  --card: 0 0% 100%;
  --shadow-sm: 0 8px 20px hsl(220 39% 11% / 0.06);
  --shadow-md: 0 14px 35px hsl(220 39% 11% / 0.12);
  --shadow-lg: 0 24px 70px hsl(220 39% 11% / 0.18);
  --transition-fast: 150ms ease;
  --transition-smooth: 280ms cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
}

.dark {
  --background: 220 39% 7%;
  --foreground: 160 33% 96%;
  --primary: 170 84% 44%;
  --primary-foreground: 220 39% 7%;
  --secondary: 263 91% 70%;
  --secondary-foreground: 220 39% 7%;
  --muted: 220 26% 15%;
  --muted-foreground: 215 18% 72%;
  --destructive: 0 78% 62%;
  --destructive-foreground: 0 0% 100%;
  --border: 220 22% 21%;
  --card: 220 34% 10%;
  --shadow-sm: 0 8px 20px hsl(0 0% 0% / 0.22);
  --shadow-md: 0 14px 35px hsl(0 0% 0% / 0.3);
  --shadow-lg: 0 24px 70px hsl(0 0% 0% / 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
}

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

button:active,
a:active {
  transform: scale(0.98);
}

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

::-webkit-scrollbar-track {
  background: hsl(var(--muted));
}

::-webkit-scrollbar-thumb {
  background: hsl(var(--primary) / 0.45);
  border-radius: 999px;
}

::selection {
  background: hsl(var(--primary) / 0.25);
}