/**
 * VINICIUS UITUKE | ENGENHEIRO CIVIL
 * Base Styles & Accessibility
 */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-light);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Tipografia Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary-black);
  line-height: 1.25;
  letter-spacing: 0.02em;
}

h1 { font-size: var(--text-hero); font-weight: 600; }
h2 { font-size: var(--text-2xl); font-weight: 600; }
h3 { font-size: var(--text-xl); font-weight: 600; }
h4 { font-size: var(--text-lg); font-weight: 600; }

p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Foco Acessível de Alto Contraste */
:focus-visible {
  outline: 2px solid var(--color-copper);
  outline-offset: 4px;
}

/* Utilitário para Leitores de Tela */
.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;
}

/* Bloqueio de scroll com menu mobile aberto */
body.menu-open {
  overflow: hidden;
}

/* Respeito à preferência de movimento reduzido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}