/* ==========================================================================
   BlenderBR — Base
   Reset, tipografia e regras globais.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 var(--sp-4);
  color: var(--color-text);
}
h1 { font-size: var(--fs-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-3xl); letter-spacing: -0.01em; }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
p { margin: 0 0 var(--sp-4); color: var(--color-text); }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

code, pre { font-family: var(--font-mono); }
code {
  background: var(--color-bg-alt);
  padding: 0.15em 0.4em;
  border-radius: 6px;
  font-size: 0.9em;
}
pre {
  background: var(--color-text);
  color: #E2E8F0;
  padding: var(--sp-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}
pre code { background: none; padding: 0; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

.visually-hidden {
  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: absolute; top: -100px; left: var(--sp-4);
  background: var(--color-primary); color: #fff;
  padding: var(--sp-2) var(--sp-4); border-radius: var(--radius-sm);
  z-index: 999; transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--sp-4); }

::selection { background: var(--color-primary); color: #fff; }

/* Fonte fallback local — projeto usa system fonts por padrão para performance;
   trocar por @font-face self-hosted (Manrope/Inter/JetBrains Mono) em produção. */