* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.35;
  -webkit-font-smoothing: antialiased;
}
.mono { font-family: var(--mono); }

::selection { background: rgba(0, 94, 133, 0.28); }
[data-theme="dark"] ::selection { background: rgba(63, 178, 224, 0.35); }

/* slim, theme-aware scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 6px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--faint); border: 2px solid transparent; background-clip: content-box; }

/* keyboard focus — visible ring, mouse clicks unaffected */
:focus-visible {
  outline: 2px solid var(--brand-l);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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