web/src/index.css

:root {
  color-scheme: light dark;

  /* Type */
  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Light theme */
  --ink: #111827;
  --paper: #ffffff;
  --surface: #ffffff;
  --surface-sunken: #f3f4f6;
  --rule: #e5e7eb;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --accent-soft: #dbeafe;
  --danger: #8c2f2f;
  --danger-soft: #f5e3e1;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(17, 24, 39, 0.04), 0 6px 20px -8px rgba(17, 24, 39, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e5e7eb;
    --paper: #0f172a;
    --surface: #1a2438;
    --surface-sunken: #111827;
    --rule: #263045;
    --muted: #94a3b8;
    --accent: #3b82f6;
    --accent-ink: #0c1211;
    --accent-soft: #1e3a5f;
    --danger: #d98686;
    --danger-soft: #3a2222;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.2), 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}