/*
  Design tokens — dark theme, neutral background, blue/green accents.
  See instructions.md § Visual Style and .github/copilot-instructions.md § CSS.
*/

:root {
  /* Surfaces */
  --bg: #0b0d10;
  --bg-elevated: #12151a;
  --bg-elevated-2: #171b21;
  --border: #23282f;

  /* Text */
  --text-primary: #e6e9ec;
  --text-secondary: #a3adb8;
  --text-muted: #6b7480;

  /* Accents */
  --accent-blue: #4f9dff;
  --accent-blue-dim: #2c5fa8;
  --accent-green: #5fd88f;
  --accent-green-dim: #2f8f5c;

  /* Spacing scale */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Fluid type scale */
  --font-size-sm: clamp(0.85rem, 0.8rem + 0.2vw, 0.95rem);
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-size-md: clamp(1.15rem, 1.05rem + 0.4vw, 1.4rem);
  --font-size-lg: clamp(1.5rem, 1.3rem + 0.8vw, 2.1rem);
  --font-size-xl: clamp(2rem, 1.6rem + 1.6vw, 3.25rem);
  --font-size-2xl: clamp(2.6rem, 2rem + 2.6vw, 4.5rem);

  /* Type */
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Layout */
  --content-max-width: 72rem;
  --radius-sm: 4px;
  --radius-md: 8px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.2s;
  --duration-base: 0.4s;
}