:root {
  --bg: #0b1d2e;
  --bg-elevated: #0f2435;
  --panel: #122b3f;
  --panel-hover: #163347;
  --ink: #e9f0f5;
  --ink-muted: #8a9bae;
  --ink-dim: #5c6d7e;
  --siemens: #009696;
  --siemens-bright: #00bedc;
  --accent: #00bedc;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --warn: #e8a838;
  --success: #3ecf8e;
  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --sidebar-w: 240px;
  --header-h: 56px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-8: 48px;
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 20px;
  --text-xl: 28px;
  --text-2xl: 36px;
  --transition: 0.2s ease;
  --accent-soft: rgba(0, 190, 220, 0.15);
  --surface: #122b3f;
}

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

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}

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