/* Base: reset, tipografia, foco, utilitários */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh;
  font-family: var(--font); font-size: var(--text-base); line-height: var(--lh-body);
  color: var(--text-primary); background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { margin: 0; color: var(--text-strong); line-height: var(--lh-tight); font-weight: 700; }
h1 { font-size: var(--text-2xl); letter-spacing: -.01em; }
h2 { font-size: var(--text-lg); }
h3 { font-size: var(--text-md); }
p { margin: 0; }
a { color: var(--text-accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
small { font-size: var(--text-xs); }
code, .mono { font-family: var(--font-mono); font-size: .92em; }
[hidden] { display: none !important; }

:focus { outline: none; }
:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 2px; border-radius: 4px; }
/* títulos recebem foco por programa (anúncio de troca de tela), sem contorno visual */
h1[tabindex="-1"]:focus, h1[tabindex="-1"]:focus-visible, #content:focus { outline: none; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 200; padding: 10px 14px; border-radius: var(--radius-sm); background: var(--action-primary-bg); color: var(--action-primary-fg); font-weight: 700; text-decoration: none; }
.skip-link:focus { top: 12px; }

.muted { color: var(--text-secondary); }
.small { font-size: var(--text-sm); }
.xs { font-size: var(--text-xs); }
.nowrap { white-space: nowrap; }
.num { font-variant-numeric: tabular-nums; }
.right { text-align: right; }
.label-caps { font-size: var(--text-xs); font-weight: 600; letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--text-secondary); }
.stack { display: flex; flex-direction: column; gap: var(--space-4); }
.stack-sm { display: flex; flex-direction: column; gap: var(--space-2); }
.row { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }
.spacer { flex: 1; }
.grid { display: grid; gap: var(--space-4); }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.g-21 { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.g-12 { grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); }
@media (max-width: 1180px) { .g-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g-21, .g-12, .g-3 { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 640px) { .g-2, .g-4 { grid-template-columns: minmax(0, 1fr); } }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }