@view-transition {
  navigation: auto;
}

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

html {
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

html, body {
  height: auto;
  overflow-x: hidden;
}

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

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text);
  line-height: var(--lh-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
}

a { color: inherit; }

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.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;
  left: var(--space-4);
  top: -3rem;
  background: var(--text);
  color: var(--bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 100;
  font-weight: 600;
  transition: top var(--duration-fast) var(--ease-premium);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.eyebrow::before {
  content: "";
  width: 1.25rem;
  height: 1px;
  background: var(--border-strong);
}

.lead {
  font-size: var(--fs-lead);
  color: var(--muted);
}

/* ===== Motion: entrada por scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-entrance) var(--ease-premium),
    transform var(--duration-entrance) var(--ease-premium);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-entrance) var(--ease-premium),
    transform var(--duration-entrance) var(--ease-premium);
}

.reveal-stagger.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0.08s; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.16s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.24s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.32s; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.42s; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.55s; }

/* Sem JS ou com erro: conteúdo sempre visível (fallback seguro) */
.no-js .reveal,
.no-js .reveal-stagger > * {
  opacity: 1;
  transform: none;
}