/* ==========================================================================
   ACURIA - Base & Global Styles
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-primary);
  color: var(--color-text-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Textura sutil de Grid Cartesiano de Engenharia */
.bg-grid-pattern {
  background-image: 
    linear-gradient(rgba(71, 85, 105, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(71, 85, 105, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
}

.bg-grid-dense {
  background-image: 
    linear-gradient(rgba(71, 85, 105, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(71, 85, 105, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Seleção de Texto */
::selection {
  background: var(--color-accent);
  color: #FFFFFF;
}

/* Links Globais */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Tipografia Hierárquica */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-brand);
  color: var(--color-text-primary);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.04em;
}

p {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
}

/* Elementos Técnicos Mono */
.mono-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--color-slate-border);
  color: var(--color-text-muted);
  background: rgba(14, 22, 38, 0.5);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.mono-tag.active {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  background: var(--color-accent-subtle);
}

/* Utilitários de Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(20px, 5vw, 64px);
  padding-right: clamp(20px, 5vw, 64px);
}

.section-padding {
  padding-top: clamp(64px, 8vw, 120px);
  padding-bottom: clamp(64px, 8vw, 120px);
}

.divider-subtle {
  height: 1px;
  background: var(--color-slate-border);
  width: 100%;
  border: none;
}

/* Acessibilidade - Visually Hidden */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: 2px solid var(--color-accent-light);
  outline-offset: 3px;
}