:root {
  --background: 36 44% 96%;
  --foreground: 18 22% 14%;
  --primary: 18 92% 56%;
  --primary-foreground: 36 40% 98%;
  --secondary: 38 58% 90%;
  --muted: 34 24% 88%;
  --destructive: 0 74% 56%;
  --border: 24 24% 82%;
  --card: 34 45% 98%;
  --shadow-sm: 0 8px 24px rgba(78, 51, 31, 0.08);
  --shadow-md: 0 16px 40px rgba(52, 34, 22, 0.12);
  --shadow-lg: 0 28px 70px rgba(40, 25, 18, 0.16);
  --transition-fast: 160ms ease;
  --transition-smooth: 280ms cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
}

.dark {
  --background: 220 16% 10%;
  --foreground: 36 24% 92%;
  --primary: 20 96% 62%;
  --primary-foreground: 18 30% 10%;
  --secondary: 220 12% 16%;
  --muted: 220 10% 20%;
  --destructive: 0 78% 62%;
  --border: 220 10% 22%;
  --card: 220 14% 13%;
  --shadow-sm: 0 10px 24px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 18px 42px rgba(0, 0, 0, 0.32);
  --shadow-lg: 0 32px 72px rgba(0, 0, 0, 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;
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.10), transparent 24%),
    radial-gradient(circle at bottom right, hsl(var(--foreground) / 0.08), transparent 26%),
    hsl(var(--background));
  color: hsl(var(--foreground));
}

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

button {
  cursor: pointer;
}

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

.paper-grid {
  background-image: linear-gradient(hsl(var(--border) / 0.35) 1px, transparent 1px), linear-gradient(90deg, hsl(var(--border) / 0.35) 1px, transparent 1px);
  background-size: 20px 20px;
}

.scroll-soft::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.scroll-soft::-webkit-scrollbar-thumb {
  background: hsl(var(--foreground) / 0.12);
  border-radius: 999px;
}