/* ==========================================================================
   Theme tokens — colors, shadows, radii. Light values live on :root;
   dark values are re-declared under [data-theme="dark"] and under the
   prefers-color-scheme media query for users who haven't chosen yet.
   ========================================================================== */

:root {
  /* Brand */
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  --color-primary-contrast: #ffffff;
  --color-accent: #06b6d4;

  /* Surfaces */
  --color-bg: #f7f8fb;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f2f6;
  --color-border: #e2e4ea;

  /* Text */
  --color-text: #1a1b25;
  --color-text-muted: #5b5d6b;
  --color-text-inverse: #ffffff;

  /* Feedback */
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-info: #2563eb;

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(16, 17, 30, 0.06);
  --shadow-md: 0 4px 12px rgba(16, 17, 30, 0.08);
  --shadow-lg: 0 12px 32px rgba(16, 17, 30, 0.12);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Type */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0f1117;
    --color-surface: #171923;
    --color-surface-alt: #1f2230;
    --color-border: #2b2f3e;

    --color-text: #eef0f6;
    --color-text-muted: #a3a6b8;
    --color-text-inverse: #0f1117;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.55);

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --color-bg: #0f1117;
  --color-surface: #171923;
  --color-surface-alt: #1f2230;
  --color-border: #2b2f3e;

  --color-text: #eef0f6;
  --color-text-muted: #a3a6b8;
  --color-text-inverse: #0f1117;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.55);

  color-scheme: dark;
}