*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: #eff1f5; color: #1a1a1a; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
textarea:focus, input:focus, select:focus { outline: 2px solid var(--accent); }

:root {
  --accent: #0056b3;
  --sidebar-bg: #1e2d40;
  --sidebar-fg: #e8edf3;
  --accent-light: #e8f0fb;
  --border: #e0e0e0;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.09);
}