:root {
  --background: 210 40% 98%;
  --foreground: 222 30% 16%;
  --primary: 255 82% 62%;
  --secondary: 172 62% 42%;
  --muted: 220 26% 92%;
  --muted-foreground: 222 16% 42%;
  --destructive: 2 78% 58%;
  --card: 0 0% 100%;
  --border: 220 24% 86%;
  --accent: 33 95% 58%;
  --success: 145 63% 42%;
  --shadow-sm: 0 8px 20px hsla(255, 60%, 30%, 0.08);
  --shadow-md: 0 18px 40px hsla(255, 60%, 20%, 0.12);
  --shadow-lg: 0 28px 60px hsla(255, 60%, 14%, 0.18);
  --transition-fast: 160ms ease;
  --transition-smooth: 320ms cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

.dark {
  --background: 228 26% 10%;
  --foreground: 210 40% 96%;
  --primary: 257 89% 70%;
  --secondary: 174 58% 48%;
  --muted: 224 20% 19%;
  --muted-foreground: 218 18% 72%;
  --destructive: 3 78% 64%;
  --card: 228 24% 14%;
  --border: 225 18% 24%;
  --accent: 38 92% 62%;
  --success: 145 62% 48%;
  --shadow-sm: 0 8px 20px hsla(240, 20%, 2%, 0.28);
  --shadow-md: 0 18px 40px hsla(240, 20%, 2%, 0.34);
  --shadow-lg: 0 28px 60px hsla(240, 20%, 2%, 0.42);
}

* {
  box-sizing: border-box;
}

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

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

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

input[type='range'] {
  height: 10px;
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 18px;
  width: 18px;
  border-radius: 999px;
  background: hsl(var(--primary));
  border: 2px solid hsl(var(--card));
  box-shadow: var(--shadow-sm);
}

input[type='range']::-moz-range-thumb {
  height: 18px;
  width: 18px;
  border-radius: 999px;
  background: hsl(var(--primary));
  border: 2px solid hsl(var(--card));
  box-shadow: var(--shadow-sm);
}

textarea {
  resize: vertical;
}

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