/* ==========================================================================
   02 · BASE
   Reset mínimo, tipografia global, foco, animações e utilitários.
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--top-bar-h) + var(--demo-bar-h) + 1rem); /* âncoras não ficam sob o cabeçalho */
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--ink-950);
  color: var(--text-on-dark);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

img {
  height: auto;
}

input,
button,
select,
textarea {
  font: inherit;
  color: inherit;
}

button,
summary,
label[for] {
  cursor: pointer;
}

a {
  color: inherit;
}

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

::selection {
  background: var(--gold-300);
  color: var(--ink-950);
}

/* ---------- Foco visível (navegação por teclado) ---------- */
:focus-visible {
  outline: 2px solid var(--gold-300);
  outline-offset: 3px;
  border-radius: 2px;
}

.section--light :focus-visible,
.panel :focus-visible {
  outline-color: var(--gold-700);
}

/* ---------- Ícones (sprite) ---------- */
.sprite {
  display: none;
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: max(var(--gutter), env(safe-area-inset-left));
}

.section {
  position: relative;
  padding-block: var(--space-section);
}

.section--dark {
  background: var(--ink-950);
  color: var(--text-on-dark);
}

.section--ink {
  background: var(--ink-900);
  color: var(--text-on-dark);
}

.section--light {
  background: var(--cream-100);
  color: var(--text-on-light);
}

/* ---------- Tipografia utilitária ---------- */
.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0; /* sobrancelhas sem espaçamento entre letras (padrão do projeto) */
  text-transform: uppercase;
  line-height: 1.4;
}

.text-gold {
  color: var(--gold-300);
}

.text-gold-light {
  color: var(--gold-200);
}

.text-gold-dark {
  color: var(--gold-700);
}

/* ---------- Abertura de seção (índice + eyebrow + título) ---------- */
/* Sobrancelha (ex.: "Como participar"): sem número, sem traço, sem espaçamento */
.section-intro__eyebrow {
  color: var(--gold-300);
  letter-spacing: 0;
}

/* Título da seção: sem serifa, firme, sem itálico */
.section-intro__title {
  margin-top: 1rem;
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.03em;
  text-wrap: balance;
  color: var(--cream-100);
}

/* Palavra de destaque: só muda a cor (sem itálico) */
.section-intro__title em {
  font-style: normal;
  color: var(--gold-300);
}

.section-intro__lead {
  max-width: 36rem;
  margin-top: 1.5rem;
  font-size: var(--fs-body-lg);
  line-height: 1.65;
  color: var(--text-on-dark-muted);
}

/* Variação para seções claras */
.section--light .section-intro__eyebrow {
  color: var(--gold-700);
}
.section--light .section-intro__title {
  color: var(--text-on-light);
}
.section--light .section-intro__title em {
  color: var(--gold-700);
}
.section--light .section-intro__lead {
  color: var(--text-on-light-muted);
}

/* ---------- Acessibilidade ---------- */
.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;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-pill);
  background: var(--gold-300);
  color: var(--ink-950);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform var(--dur-base) var(--ease-silk);
}

.skip-link:focus {
  transform: none;
}

/* Visibilidade por tamanho de tela */
.only-tablet-up {
  display: none;
}
@media (min-width: 40rem) {
  .only-mobile {
    display: none;
  }
  .only-tablet-up {
    display: inline;
  }
}

[hidden] {
  display: none !important;
}

/* ---------- Animações ---------- */

/* Entrada do hero (em cascata via --delay) */
@keyframes rise {
  from { opacity: 0; transform: translate3d(0, 14px, 0); }
  to   { opacity: 1; transform: none; }
}
@keyframes settle {
  from { opacity: 0; transform: scale(1.035); }
  to   { opacity: 1; transform: none; }
}
@keyframes drift {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
  50%      { transform: translate3d(-1.5%, 1%, 0) rotate(-1.2deg); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translate3d(0, 10px, 0); }
  to   { opacity: 1; transform: none; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes pulse {
  50% { opacity: 0.5; }
}

.anim-rise {
  animation: rise 1s var(--ease-silk) both;
  animation-delay: var(--delay, 0ms);
}

.anim-fade-up {
  animation: fade-up 0.5s var(--ease-silk) both;
  animation-delay: var(--delay, 0ms);
}

/* Revelação ao rolar: só esconde se o JS estiver ativo (classe .has-js no <html>) */
.has-js .reveal {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition:
    opacity var(--dur-slow) var(--ease-silk),
    transform 0.9s var(--ease-silk);
  transition-delay: var(--delay, 0ms);
}

.has-js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Respeita quem prefere menos movimento */
@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;
  }
  .has-js .reveal {
    opacity: 1;
    transform: none;
  }
}