/* ==========================================================================
   BASE — reset, tipografia global e utilitários de acessibilidade
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  font-weight: var(--fw-semibold);
  color: var(--color-navy-900);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
textarea,
select {
  font: inherit;
}

ul[class],
ol[class] {
  list-style: none;
  padding: 0;
}

/* ---- Foco visível (acessibilidade — navegação por teclado) ---- */
:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-3) var(--space-5);
  background: var(--color-navy-900);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  transition: top var(--duration-base) var(--ease-standard);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---- Utilitário: esconder visualmente, manter para leitor 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;
}

/* ---- Container padrão ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* ---- Seções ---- */
.section {
  padding-block: var(--space-11);
}

.section--tight {
  padding-block: var(--space-9);
}

.section--inverse {
  background: var(--color-navy-900);
  color: var(--color-text-inverse);
}

.section--inverse h2,
.section--inverse h3 {
  color: var(--color-white);
}

.section--alt {
  background: var(--color-bg-alt);
}

/* ---- Reveal on scroll (progressive enhancement, ver js/reveal.js) ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-standard),
    transform var(--duration-slow) var(--ease-standard);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}